TECHNICAL & SERVICE MANUAL
KGS1411 / CG1411
FILE NO.
Destination: U.S.A.
GAS HEATER AIR CONDITIONER
Indoor Model No.
KGS 1411
Product Code No.
1 852 062 56
Outdoor Model No. Product Code No.
CG 1411 1 714 734 00
Indoor Unit
Outdoor Unit
KGS1411
CG1411
REFERENCE NO. SM700361
W
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Table of Contents
Page
1
1. OPERATING RANGE ................................................................................................................
2. SPECIFICATIONS
2-1. Unit Specifications............................................................................................................
2-2. Major Component Specifications......................................................................................
2-3. Other Component Specifications......................................................................................
2
4
7
3. DIMENSIONAL DATA
3-1. Unit...................................................................................................................................
3-2. Internal Components........................................................................................................
3-3. Major Components...........................................................................................................
9
11
13
4. REFRIGERANT FLOW DIAGRAM
4-1. Refrigerant Flow Diagram.................................................................................................
16
5. PERFORMANCE DATA
5-1. Performance Charts .........................................................................................................
5-2. Air Throw Distance Charts ...............................................................................................
5-3. Cooling Capacity ..............................................................................................................
5-4. Heating Capacity..............................................................................................................
17
18
19
20
6. ELECTRICAL DATA
6-1. Electrical Characteristics..................................................................................................
6-2. Electric Wiring Diagrams..................................................................................................
21
22
7. INSTALLATION INSTRUCTIONS
7-1. Installation Site Selection .................................................................................................
7-2. Recommended Wire Length and Diameter......................................................................
7-3. Remote Control Unit Installation Position.........................................................................
25
27
28
8. FUNCTION
8-1. Motion Explanation...........................................................................................................
8-2. Cooling .............................................................................................................................
8-3. Heating.............................................................................................................................
8-4. Fan Speed Control ...........................................................................................................
8-5. Dry Operation (Dehumidification).....................................................................................
8-6. Automatic Operation.........................................................................................................
8-7. Freeze Prevention.............................................................................................................
8-8. Overload Prevention (Heating) .........................................................................................
29
31
33
37
38
39
40
41
9. OPERATION FLOWCHARTS
9-1. Cooling, Dry......................................................................................................................
9-2. Heating.............................................................................................................................
42
43
ii
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10. PROCEDURE FOR DISMANTLING THE UNIT
10-1. Procedure for Dismantling the Indoor Unit .......................................................................
10-2. Procedure for Dismantling the Outdoor Unit.....................................................................
44
47
11. POINTS TO DIAGNOSE
11-1. Indoor Unit Alarm Signal ..................................................................................................
11-2. Manifold Pressure.............................................................................................................
11-3. Checking Electrical Components......................................................................................
50
50
51
12. TROUBLESHOOTING
12-1. Check Before and After Troubleshooting..........................................................................
12-2. When the Air Conditioner Does Not Work at All (Both Indoor and Outdoor Units) —
Operation Lamp Does Not Light.......................................................................................
12-3. Operation Lamp Blinks (It Keeps Blinking after 3 Minutes Following Start of Operation).
12-4. Outdoor Unit Fan Does Not Work.....................................................................................
12-5. Flap Motor Does Not Work...............................................................................................
12-6. Heating Operation Not Possible .......................................................................................
12-7. Reset Method When Error Occurs During Heating Operation .........................................
12-8. Failure Display on Outdoor Unit and Correction Method..................................................
53
54
54
58
59
59
63
64
13. SPECIAL PRECAUTIONS WHEN SERVICING THE UNIT
13-1. BLK/WHT Connector Attachment for Servicing................................................................
13-2. Refrigerant Recovery........................................................................................................
13-3. Service on Outdoor Unit...................................................................................................
13-4. Evacuation Using Vacuum Pump .....................................................................................
13-5. Refrigerant Charging........................................................................................................
13-6. Reattaching BLK/WHT Connectors for Operation............................................................
65
66
66
66
67
68
APPENDIX
INSTRUCTION MANUAL
iii
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1. OPERATING RANGE
Temperature
Indoor Air Intake Temp.
Outdoor Air Intake Temp.
Cooling
Maximum
Minimum
Maximum
Minimum
95°F (35°C) D.B.
71°F (21.7°C) W.B.
115°F (46.1°C) D.B.
67°F (19.4°C) D.B.
57°F (13.9°C) W.B.
67°F (19.4°C) D.B.
Heating
80°F (26.7°C) D.B.
67°F (19.4°C) W.B.
75°F (23.9°C) D.B.
65°F (18.3°C) W.B.
— D.B.
— W.B.
0°F (–17.8°C) D.B.
–2°F (–19°C) W.B.
1
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2. SPECIFICATIONS
2-1. Unit Specifications
Indoor unit
KGS1411
Outdoor unit CG1411
Power Source
Cooling
Heating
Electric power source
Employed gas
115V 60Hz
115V
—
Natural gas (LP)
Heating
Cooling
Voltage Rating
Performance
Cooling
2.58
Heating
Capacity
kW
4.1 / 2.9 / 1.8
8,800
282 (8.0)
2.2
14,000 / 9,900 / 6,150
Air circulation (High)
ft3/min (m3/min)
Pints/h
300 (8.5)
—
Moisture removal (High)
Electrical Rating
Available voltage range
Running amperes
Power input
Cooling
Heating
V
104 – 126
A
8.2
900
95
5.9
620
91
W
%
Power factor
SEER
BTU/W
A
10.0
—
Compressor locked rotor amperes
49
Features
Controls / Temperature control
Microprocessor / I.C. thermostat
Wireless remote control unit
ON / OFF 12 hours, 1-hour OFF
3 and Auto / 1 (Hi)
Manual
Control unit
Timer
Fan speeds
Indoor / Outdoor
Airflow direction (Indoor)
Horizontal
Vertical
Auto
Air filter
Washable
Compressor
Rotary (Hermetic)
1.34 (0.61)
Refrigerant / Amount charged at shipment lb. (kg)
Refrigerant control
Capillary tube
Operation sound
Indoor: Hi / Me / Lo dB-A
39 / 37 / 34
45
41 / 38 / 33
43
Outdoor: Hi
dB-A
Refrigerant tubing connections
Flare
Max allowable tubing length at shipment
ft. (m)
inch (mm)
inch (mm)
25 (7.5)
Refrigerant tubing
diameter
Narrow tube
Wide tube
1/4 (6.35)
3/8 (9.52)
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Remarks: Rating conditions are
Cooling: Indoor air temperature 80°F D.B. / 67°F W.B.
Outdoor air temperature 95°F D.B. / 75°F W.B.
Heating: Indoor air temperature 70°F D.B.
Outdoor air temperature 47°F D.B. / 43°F W.B.
2
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Indoor unit
KGS1411
Outdoor unit CG1411
Dimensions & Weight
Indoor Unit
10-5/8 (270)
31-11/16 (805)
6-31/32 (177)
9-13/16 (249)
33-21/32 (855)
13-5/16 (338)
17.6 (8.0)
Outdoor Unit
23-7/32 (590)
28-1/2 (724)
11-15/32 (291)
31-1/16 (789)
25-1/32 (636)
14-29/32 (379)
85.7 (39.0)
Unit dimensions
Height
Width
Depth
Height
Width
Depth
Net
inch (mm)
inch (mm)
inch (mm)
inch (mm)
inch (mm)
inch (mm)
lb. (kg)
Package dimensions
Weight
Shipping
lb. (kg)
cu.ft (m3)
22.0 (10.0)
90.8 (41.0)
Shipping volume
2.51 (0.071)
6.72 (0.19)
Burner
Natural gas
LP
Burner type
Ribbon burner
Slit type
Burner configuration
Gas Consumption
Natural gas
15,500 (4.55)
10,400 (3.05)
6,150 (1.80)
LP
Typical input
BTU/h (kW)
High
Medium
Low
15,500 (0.719 lb./h)
10,400 (0.482 lb./h)
6,150 (0.285 lb./h)
Governor Setting Pressure
Natural gas
LP
P2
P1
P2
P1
P2, P1
Inches water column (kPa)
High
Medium
Low
3.43 (0.853)
1.61 (0.402)
0.63 (0.157)
7.0 (1.74)
3.54 (0.883)
1.61 (0.402)
0.63 (0.157)
11.0 (2.74)
"
"
"
"
Gas Nozzle
Natural gas
LP
Inner diameter
Q’ty
ø inch (ø mm)
0.0807 (2.05)
1
0.0630 (1.60)
1
Safety Devices
Cooling
Heating
Re-start timer (3 minute)
Compressor over-load limiting
Circuit fuse
●
●
●
●
Current limit function (out of range between 0.8 – 17A)
Thermal fuse
—
—
—
●
●
●
Auto reset temperature limiting 221°F (105°C)
Flame rod
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
Remarks: Rating conditions are
Cooling: Indoor air temperature 80°F D.B. / 67°F W.B.
Outdoor air temperature 95°F D.B. / 75°F W.B.
Heating: Indoor air temperature 70°F D.B.
Outdoor air temperature 47°F D.B. / 43°F W.B.
3
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2-2. Major Component Specifications
2-2-1. Indoor Unit
Indoor unit KGS1411
Control PCB
Part No.
POW-KGS14A, B
Microprocessor
115V
Controls
Control circuit fuse
Remote Control Unit
RCS-IRS2U
Fan & Fan Motor
Type
Cross-flow
Q’ty … Dia. and length
Fan motor model … Q’ty
Nominal output
inch (mm)
W
1 … ø 95 / L617 (ø 3-3/4 / L24-9/32)
KFV4-21HIP … 1P
15
Coil resistance (ambient temp. 68°F (20°C))
Ω
BLU – BRN: 104.9
BLU – PNK: 128.0
Safety devices
Run capacitor
Type
X23
Operating temp.
Open °F (°C)
Close
259 (126) ±4 (±2)
—
3.5
180
µF
VAC
Flap Motor
Type
Stepping motor
Model
Rating
MP24GA1
DC12V
Coil resistance (ambient temp. 77°F (25°C))
Ω
WHT – BLU (respectively 4 wires): 380 ± 7%
Heat Exchanger Coil
Coil
Aluminum plate fin / Copper tube
Rows
2
Fin pitch
Face area
inch (mm)
ft2 (m2)
1/16 (1.4)
1.40 (0.130)
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
4
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2-2-2. Outdoor Unit (1)
Outdoor unit CG1411
Control PCB
Part No.
CG1411
Microprocessor
115V 5A
Controls
Control circuit fuse
Gas Connection
Employed gas
Natural Gas (LP)
1/2 Female
Gas connection
Compressor
Type
Rotary (Hermetic)
C-1R71H2W
700
Compressor model
Nominal output
Compressor oil … Amount
W
cc
Ω
SUNISO 4GSD-T … 370
C – R: 0.879
C – S: 3.609
External (OLR)
MRA98962-9200
275 ± 9 (135 ± 5)
156 ± 20 (69 ± 11)
Trip in 6 to 16 sec. at 34A
35
Coil resistance (ambient temp. 68°F (20°C))
Safety devices Type
Overload relay
Operating temp.
Open °F (°C)
Close °F (°C)
Operating amp (ambient temp. 77°F (25°C))
Run capacitor
PTC starter
µF
VAC
330
Part number
912X24E400XR20-PS2A
47
Resistance
Max voltage
Ω
300
Crank case heater
—
Fan & Fan Motor
Type
Propeller
1 … 13-25/32 (ø 350)
SB6-11H1P … 1
6 … 600
Q’ty … Dia. and length
Fan motor model … Q’ty
No. of poles … rpm (115V, High)
Nominal output
inch. (mm)
W
10
Coil resistance (ambient temp. 77°F (25°C))
Ω
BLU – BRN: 114.0 ± 7%
BLU – WHT: 153.4 ± 7%
Thermostat
Safety devices
Run capacitor
Type
Operating temp.
Open °F (°C)
Close °F (°C)
µF
266 ± 14 (130 ± 8)
174 ± 27 (79 ± 15) Automatic reclosing
5.0
VAC
220
Heat Exchanger Coil
Coil
Aluminum plate fin / Copper tube
Rows
1
Fin pitch
inch (mm)
ft2 (m2)
1/16 (1.3)
2.73 (0.254)
Face area
External Finish
Acrylic baked-on enamel finish
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
5
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2-2-2. Outdoor Unit (2)
Outdoor unit CG1411
Burner
Type
Ribbon burner
Q’ty … Material, thickness
inch (mm)
1 … Stainless steel, 0.0157 (0.4)
Nozzle
Q’ty … Material
Diameter
1 … Brass
ø inch (ø mm)
0.0807 (2.05 ± 0.05)
Fan & Fan Motor
Type
Sirocco fan
Q’ty … Dia. and length
Fan motor model … Q’ty
No. of poles … rpm
Nominal output
inch (mm)
W
1 … ø 3.346 (85) and 0.984 (25)
FU2-051FIMP … 1
2 … (1,300 – 2,900)
6
21.3
Coil resistance (ambient temp. 68°F (20°C))
Ω
Safety devices
Type
Thermal fuse
293 (145)
—
Operating temp.
Open °F (°C)
Close
Refrigerant Heater
Case / Coil
Aluminum (collapsible forming) / Copper tube
Heat conduction face area
Heat load
ft2 (m2)
× 10–3 BTU/h • ft2 (m2)
1.83 (0.17)
7.65 (1.3)
Combination Gas Valve
Type
Combination control
UP13-27
Model
Coil resistance
Valve (SV1 & SV2 for shut-off)
Valve (PV for control)
Ω
Ω
1600 ± 10%
87 ± 10%
Igniter
Type
Electric sparking
IG-XS07-S
Model
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
6
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2-3. Other Component Specifications
2-3-1. Indoor Unit
Indoor unit KGS1411
Transformer
ATR-1581T2-U
AC 115V, 60Hz
Rating
Primary
Secondary
Capacity
13.7V, 0.5A
6.85VA
Coil resistance
Ω (at 77°F (25°C))
Primary (WHT – WHT): 128 ± 20%
Secondary (BRN – BRN): 2.28 ± 20%
277°F (136°C)
Thermal cut-off temp.
Thermistor (Coil sensor)
DTN-TKS118B
Resistance
kΩ
32°F (0°C) 188 ± 4%
Thermistor (Room sensor)
DTN-TKS134B
Resistance
kΩ
77°F (25°C) 5.0 ± 3%
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
7
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2-3-2. Outdoor Unit
Outdoor unit CG1411
Transformer (TR)
4FF4L510034000
AC 115V, 60Hz
Rating
Primary
Secondary S1
S2
DC 25.4V, 0.25A
DC 12.6V, 0.1A
S3
AC 100V, 1Ma
Capacity
Ω (at 70°F (21°C))
5VA
Coil resistance
Primary (ORG – ORG): 71.1 ± 10%
Secondary (RED – RED): 5.79 ± 10%
Secondary (BLU – BLU): 8.38 ± 10%
Secondary (YEL – YEL): 257 ± 10%
277°F (136°C)
Thermal cut-off temp.
Power Relay (PR)
Coil rating
DFU24D1F
DC 24V
Coil resistance
Contact rating
Ω (at 68°F (20°C))
650 ± 10%
AC 250V, 20A
Thermistor 1 (Discharge pressure)
Resistance kΩ
PB3M-41E
122°F (50°C) 2.2 ± 5%
Thermistor 2 (Outlet refrigerant temp.)
PB3M-41E
Resistance
kΩ
131°F (55°C) 2.2 ± 5%
Reversing Valve
Coil rating
CHV-01AE (Coil), CHV-0101 (Valve)
AC115 – 120V, 50/60Hz, 6/5W
370
Coil resistance
Ω
ON/OFF Valve (Q’ty = 2)
Coil rating
NEV-MOAE (Coil), NEV-603DXF (Valve)
AC115 – 120V, 50/60Hz, 7W
370
Coil resistance
Ω
Check Valve 1 (See Refrigerant Diagram)
FCV-3020D
BCV-804DX
Check Valve 2 (See Refrigerant Diagram)
Auto Reset Temperature Limiting
Model
Rating
CS-7L
AC125V, 200mA
Thermal Fuse
Model
X25
Cut-off temp.
293°F (145°C)
DATA SUBJECT TO CHANGE WITHOUT NOTICE.
8
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3. DIMENSIONAL DATA
3-1. Unit
3-1-1. Indoor Unit
Indoor unit KGS1411
31-11/16 (805)
6-31/32 (177)
Drain hose ø23/32 (18)
Remote control unit
2-2/5
(61)
25/32
(18.5)
2-5/16
(58.5)
3-29/32
(99.5)
Narrow tube ø1/4 (6.35)
Wide tube ø3/8 (9.52)
Center of tubing
hole (2 places)
Unit: inch (mm)
9
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3-1-2. Outdoor Unit
Outdoor unit CG1411
4-11/16
(119)
16-23/32
(425)
4-9/16
(116)
2-9/16
(65)
Holes for anchor bolts
(4-ø15/32)
Narrow tube service valve
ø1/4 (6.35)
Wide tube service valve
ø3/8 (9.52)
2-13/32
(30)
9-1/16
(230)
25-31/32 (660)
5-21/32
(144)
2-17/32
(64)
5-5/32
(131)
Unit: inch (mm)
10-1/4
(260)
NOTE
Location of Service Valves
Service valves are located behind the side panel.
See the illustration at right.
Wide tube service valve
ø3/8 (9.52)
Narrow tube service valve
ø1/4 (6.35)
10
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3-2. Internal Components
3-2-1. Indoor Unit
Indoor unit KGS1411
Operation selector
PCB A
Air cleaner filter
Air filter
PCB B
Transformer
Terminal block
Fan motor
Air intake grille
Anti-vibration rubber
for motor
Heat-exchanger
sensor
Ground screw
Flap
Attachment plate
of the conduit
Heat
exchanger
Cross-flow fan
Drain pan
Indicator
Vertical flap
Louver motor
Refrigerant
tubing
Wireless remote
control unit
Room temperature sensor
Drain hose
11
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3-2-2. Outdoor Unit
Outdoor unit CG1411
On/Off valve
Reversing
valve
PTC
starter
Transformer
Printed
circuit board
Outdoor
fan motor
capacitor
Capacitor
for compressor
(solid state controller)
Reversing
valve
Exhaust
chimney
Bimetal
thermostat
Thermal
fuse
Propeller
fan
Refrigerant
heater
Combination
gas valve
Terminal
block
Thermistor 2
Manual
shut-off
valve
Flame
sensor
probe
Ignition
electrode
Combustion
blower
Burner
Thermistor 1
Compressor
Heat exchanger
Gas conduit
Ignition transformer
Accumulator
12
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3-3. Major Components
Outdoor unit CG1411
(1) Combination Gas Valve (Proportional Control Valve)
Type:
Combination Gas Valve
UP13-27
Model:
Material: Aluminum Die-Cast
Unit: inch (mm)
Electro-
magnetic
valve 1
0.590
(15)
Body
0.906 0.708
(23) (18)
1.433
(36.4)
2.067
(52.5)
Electro-
magnetic
valve 2
1.948
(49.5)
0.925
(23.5)
Proportional
control valve
Adjuster
(2) Gas Nozzle
Natural Gas
LPG
Material
Body: Aluminum Die-Cast / Nozzle: Brass
Nozzle Dia.
0.0807 inch (2.05 mm)
0.0630 inch (1.60 mm)
Figure
Unit: inch (mm)
NAT
LPG
13
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(3) Main Burner
Type:
Ribbon Burner
Material: Stainless Steel, Thickness: 0.0157 inch (0.4 mm)
Unit: inch (mm)
0.433 (11)
6.457 (164)
0.984 (25)
(4) Combustion Blower
Combustion blower fan
Outer diameter: 3-11/32
Combustion blower motor
FU2-051F1MP
3.764 (95.6)
Fan casing
14
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(5) Refrigerant Heater
Unit: inch (mm)
Aluminum
Copper tube
Outer dia. 5/16
6.693 (170)
3.150 (80)
Packing (both sides)
Ceramic fiber
Side wall (both sides)
Aluminum-coated
steel sheet
15
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4. REFRIGERANT FLOW DIAGRAM
4-1. Refrigerant Flow Diagram
Indoor unit
KGS1411
Outdoor unit
CG1411
COOLING CYCLE
Indoor unit
Outdoor unit
ON/OFF valve 2
Accumulator
Compressor
Wide tube
service valve
Wide tube
O.D.
3/8" (9.52 mm)
Reversing
valve
Muffler
(
)
Check
valve 2
Heat
exchanger
Capillary
tube
Heat
exchanger
Refrigerant
heater
ON/OFF
valve 1
Narrow tube
service valve
Cooling
cycle
(
)
Narrow tube
O.D.
Strainer
Check
Capillary tube
1/4" (6.35 mm)
valve 1
HEATING CYCLE
Indoor unit
Outdoor unit
ON/OFF valve 2
Accumulator
Compressor
Wide tube
service valve
Wide tube
Reversing
valve
O.D.
3/8" (9.52 mm)
Muffler
(
)
Check
valve 2
Heat
exchanger
Capillary
tube
Heat
exchanger
Refrigerant
heater
ON/OFF
valve 1
Narrow tube
service valve
Heating
cycle
(
)
Narrow tube
O.D.
Strainer
Check
Capillary tube
1/4" (6.35 mm)
valve 1
16
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5. PERFORMANCE DATA
5-1. Performance Charts
Indoor unit
KGS1411
Outdoor unit CG1411
● Cooling Characteristics
● Heating Characteristics
115 V
115 V
Indoor inlet air
D.B. temp. °F (°C)
Indoor inlet air
D.B. temp. °F (°C)
12
12
11
10
9
11
10
9
90 (32.0)
80 (26.7)
70 (21.0)
8
8
7
7
80 (26.7)
70 (21.0)
59 (15.0)
6
6
5
5
70 80 90 100 110 120
(21.1) (26.7) (32.2) (37.8) (43.3) (48.9)
10 20 30 40 50 60 70
60
(15.6)
(–12.2)(–6.6) (–1.1) (4.4) (10.0) (15.6) (21.1)
Outdoor inlet air D.B. temp. °F (°C)
Outdoor inlet air D.B. temp. °F (°C)
115 V
115 V
Indoor inlet air
D.B. temp. °F (°C)
Indoor inlet air
D.B. temp. °F (°C)
(10.5)
(9.8)
(9.1)
(8.4)
(7.7)
(7.0)
(6.3)
(5.6)
(4.9)
(4.2)
(3.5)
(25.4)
(23.9)
(22.5)
(21.1)
(19.7)
(18.3)
(16.9)
(15.5)
(14.1)
(12.7)
(11.2)
150
140
130
120
110
100
90
360
340
320
300
280
260
240
220
200
180
160
80 (26.7)
70 (21.0)
59 (15.0)
90 (32.0)
80 (26.7)
80
70 (21.0)
70
60
50
70 80 90 100 110 120
(21.1) (26.7) (32.2) (37.8) (43.3) (48.9)
60
(15.6)
10 20 30 40 50 60 70
(–12.2)(–6.6) (–1.1) (4.4) (10.0) (15.6) (21.1)
Outdoor inlet air D.B. temp. °F (°C)
Outdoor inlet air D.B. temp. °F (°C)
NOTE
● … Points of rating condition
Black dots in above charts indicate the following rating conditions.
Cooling: Indoor air temperature 80°F D.B. / 67°F W.B.
Outdoor air temperature 95°F D.B.
17
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5-2. Air Throw Distance Charts
Indoor unit
Cooling
Room air temp.: 80°F (27°C)
KGS1411
Fan speed:
High
Horizontal distance (ft.)
15 20
5
10
25
30
5
10
15
: Louver angle 0°
: Louver angle 30°
: Axis air velocity 0°
: Axis air velocity 30°
Heating
Room air temp.: 70°F (20°C)
Fan speed:
High
Horizontal distance (ft.)
15 20
5
10
25
30
5
10
15
: Flap angle 45°
: Flap angle 60°
: Axis air velocity 45°
: Axis air velocity 60°
18
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5-3. Cooling Capacity
Indoor unit
KGS1411
Outdoor unit CG1411
115V single-phase 60Hz
Rating Capacity: 9,000 BTU/h
Air Flow Rate: 282 CFM
Condenser
Evaporator
Ent. Temp. °F (°C)
Ambient Temp. °F (°C)
75
(23.9)
85
(29.4)
95
(35.0)
105
(40.6)
115
(46.1)
WB
DB
TC
CI
9,120
0.65
8,680
0.71
8,170
0.77
7,610
0.83
6,980
0.92
59
72 (22.2)
76 (24.4)
80 (26.7)
84 (28.9)
88 (31.1)
SHC
SHC
SHC
SHC
SHC
TC
6,750
7,640
8,570
9,120
9,120
9,460
0.65
6,530
7,420
8,350
8,680
8,680
9,040
0.72
6,280
7,170
8,100
8,170
8,170
8,590
0.78
6,010
6,900
7,610
7,610
7,610
8,070
0.85
5,710
6,600
6,980
6,980
6,980
7,520
0.94
(15.0)
CI
63
72 (22.2)
76 (24.4)
80 (26.7)
84 (28.9)
88 (31.1)
SHC
SHC
SHC
SHC
SHC
TC
5,670
6,560
7,490
8,370
9,260
9,820
0.66
5,480
6,360
7,290
8,180
9,040
9,430
0.72
5,270
6,160
7,090
7,980
8,590
# 9,000
0.79
5,040
5,930
6,860
7,750
8,070
8,520
0.86
4,800
5,690
6,620
7,510
7,520
8,000
0.96
(17.2)
CI
67
72 (22.2)
76 (24.4)
80 (26.7)
84 (28.9)
88 (31.1)
SHC
SHC
SHC
SHC
SHC
TC
4,580
5,470
6,400
7,290
8,180
10,340
0.67
4,420
5,310
6,240
7,120
8,010
9,980
0.73
4,240
5,130
6,060
6,950
7,830
9,590
0.8
4,050
4,930
5,860
6,750
7,640
9,170
0.88
3,840
4,720
5,650
6,540
7,430
8,700
0.98
(19.4)
CI
71
72 (22.2)
76 (24.4)
80 (26.7)
84 (28.9)
88 (31.1)
SHC
SHC
SHC
SHC
SHC
TC
3,500
4,390
5,320
6,210
7,090
10,550
0.68
3,360
4,250
5,180
6,070
6,960
10,210
0.74
3,220
4,100
5,030
5,920
6,810
9,850
0.81
3,060
3,950
4,880
5,760
6,650
9,430
0.9
2,890
3,770
4,700
5,590
6,480
8,990
1
(21.7)
CI
75
76 (24.4)
80 (26.7)
84 (28.9)
88 (31.1)
SHC
SHC
SHC
SHC
3,230
4,160
5,050
5,930
3,110
4,040
4,930
5,820
2,990
3,920
4,810
5,690
2,850
3,780
4,660
5,550
2,700
3,630
4,520
5,410
(23.9)
TC : Total cooling capacity (BTU/h)
SHC : Sensible heat capacity (BTU/h)
CI
: Compressor input (kW)
Rating conditions (# mark) are: Outdoor ambient temperature
95°F (35°C) D.B.
Indoor unit entering air temperature
80°F (26.7°C) D.B./67°F (19.4°C) W.B.
19
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5-4. Heating Capacity
Indoor unit
KGS1411
Outdoor unit CG1411
120
110
100
90
80
70
60
50
40
30
20
10
0
20
(–9.4)
30
(–1.1)
40
(4.4)
50
(10.0)
60
(15.5)
0
10
(–12.2)
47
(8.3)
(–17.8)
Outdoor temperature °F (°C) D.B.
NOTE
1) ● … Point of rating condition
Black dot in the chart indicates the following rating condition.
Indoor: 70°F (21.1°C) D.B.
Outdoor: 47°F (8.3°C) D.B. / 43°F (6.1°C) W.B.
2) Above characteristics indicate instantaneous operation, which does not take into account defrost
operation.
3) Fan speed: High
4) Conventional heat pump type air conditioner may not generate enough heating capacity especially when
the outdoor temperature falls to extremely low level. Gas heater air conditioner can operate powerfully to
warm the room continuously even when the outdoor temperature becomes very low.
20
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6. ELECTRICAL DATA
6-1. Electrical Characteristics
Indoor unit
KGS1411
Outdoor unit CG1411
Cooling
Indoor Unit
Fan Motor
Outdoor Unit
Fan Motor Compressor
115V Single phase 60Hz
Complete Unit
Performance at
Rating conditions
Running amp.
Power input
Running amp.
Power input
A
kW
A
0.35
0.033
0.35
0.64
0.077
0.64
7.2
0.79
9.0
8.2
0.90
10.0
1.10
Full load conditions
kW
0.033
0.077
0.99
Rating conditions:
Indoor air temperature
Outdoor air temperature
80°F (26.7°C) D.B. / 67°F (19.4°C) W.B.
95°F (35°C) D.B.
Full load conditions: Indoor air temperature
Outdoor air temperature
95°F (35°C) D.B. / 70°F (21.2°C) W.B.
115°F (46.1°C) D.B.
Heating
Indoor Unit
Fan Motor
Outdoor Unit
Complete Unit
Fan Motor
Compressor
Performance at
115V Single phase 60Hz
Rating conditions
Running amp.
Power input
Running amp.
Power input
A
kW
A
0.35
0.033
0.35
0.64
0.077
0.64
4.9
0.51
5.8
5.9
0.62
6.8
Full load conditions
kW
0.033
0.077
0.61
0.72
Rating conditions:
Indoor air temperature
Outdoor air temperature
70°F (21.1°C) D.B.
47°F (8.3°C) D.B. / 43°F (6.1°C) W.B.
80°F (26.7°C) D.B.
Full load conditions: Indoor air temperature
Outdoor air temperature
75°F (23.9°C) D.B. / 65°F (18.3°C) W.B.
21
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6-2. Electric Wiring Diagrams
(1) Indoor unit
KGS1411
WARNING
To avoid electrical shock hazard, be sure to
disconnect power before checking, servicing
and/or cleaning any electrical parts.
Terminal base (4P)
1
2
3
4
COM
WHT
RED
CM ON
AC115V
RV ON
G
GND
3
4
AC out
RV
Power relay
COM
Trans 1
1 1
3P (WHT) 3 3
WHT
WHT
Fan motor
PNK
BRN
BLU
1 1
3 3
5 5
P
S
Fan
5P (WHT)
FM
Controller (B)
Trans 2
2P (RED)
1 1
2 2
BRN
BRN
DC-CONT 11P (WHT)
1 2 3 4 5 6 7 8 9 10 11
1 2 3 4 5 6 7 8 9 10 11
G
DC-CONT 11P (WHT)
1 1
2 2
3 3
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
1 1
2 2
3 3
4 4
5 5
6 6
7 7
8 8
WHT
GRY
GRY
GRY
WHT
GRY
GRY
GRY
Hole IC
3P (WHT)
Lamp
8P (WHT)
Connector
Controller (A)
1 1
2 2
3 3
4 4
5 5
WHT
BLU
BLU
BLU
BLU
1 1
2 2
3 3
4 4
5 5
Flap
5P (GRN)
FLP
Coil
2P (WHT)
BLK
BLK
1 1
2 2
Flap motor
Coil thermistor
22
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(2) Outdoor unit CG1411
WARNING
To avoid electrical shock hazard, be sure to
disconnect power before checking, servicing
and/or cleaning any electrical parts.
B L K
B L K
B L K
B L K
O R G
O R G
W H T
W H T
O R G
O R G
R E D
R E D
B L K
B L K
B L K
B L K
P U R
P U R
B L K
B L K
23
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(3) Printed circuit board
POW-CG1411
C N 1 2
1
C N 1 0 A
4
C N 1 0 B
C N 1 1 C N 1 4
1
2
1
3
R 5 2
R 5 3
C 3 2
C 3 1
D 1 1
D 0 3
C 2 8
J 1 7
–
–
–
+
+
+
–
+
R 1 0 5
R 6 9
R 7 1
C N 0 8
R E G 1
Q 0 5
R 8 0
R 5 6
R 5 5
J 1 9
Q 0 3
R 2 9
R 2 8
K 0 1
R 1 3
R 1 2
C 1 2
J 1 4
D 0 5
D 1 0
R 3 2
Q 0 6
1
3
R 6 8
R 1 4
R 2 0
K 0 3
K 0 6
R 6 7
R 3 1
C 3 3
C 0 8
J 1 3
J 2 1
K 0 4
J 1 2
J 2 3
R 4 8
J 2 4
R 2 4
J 2 5
R 2 6
C 1 9
D 1 7
J 1 0
R 2 7
D 0 6
D 0 8
J 2 6
J 2 7
J 2 8
R 8 2
R 6 4
R 6
R 5 9
R 2 2
C 2 5
R 5 7
R 8 3
C 2 2
R 0 6
J 0 7
A B S 1
J 2 9
R 4 7
D 1 0 0
J 3 6
R 0 4
J 3 0
R 4 0
C 1 8
R 4 1
R 4 9
C 1 0 3
1
1
3
3
R 1 0 6
R 3 9
C 1 7
R 0 3
J 0 3
R 3 8
I C 6
R 0 2
C 1 0 1
K 0 5
R 0 1
24
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7. INSTALLATION INSTRUCTIONS
7-1. Installation Site Selection
7-1-1. Indoor Unit
To prevent abnormal heat
WARNING
generation and the possibility
of fire, do not place obsta-
cles, enclosures and grilles
2"(5 cm) min.
2"(5 cm)
min.
2"(5 cm)
min.
in front of or surrounding the
air conditioner in a way that
may block air flow.
AVOID:
Front View
● direct sunlight.
Fig. 1
● nearby heat sources that may affect performance of
the unit.
Tubing length (L)
INDOOR
UNIT
● areas where leakage of flammable gas may be
expected.
Elevation
difference (H)
● places where large amounts of oil mist exist.
OUTDOOR
UNIT
DO:
● select an appropriate position from which every cor-
ner of the room can be uniformly cooled. (High on a
wall is best.)
Fig. 2
CAUTION
● select a location that will hold the weight of the unit.
Indoor unit
Wall
● select a location where tubing and drain hose have
For stable operation of
the air conditioner, do not
install wall-mounted type
indoor units under 5 ft.
(1.5 m) from floor level.
the shortest run to the outside.
● allow room for operation and maintenance as well as
Minimum height
from floor level
5 ft. (1.5 m)
unrestricted air flow around the unit. (Fig. 1)
● install the unit within the maximum elevation differ-
ence (H) above the outdoor unit and within a total
tubing length (L) from the outdoor unit as detailed in
Table 1 and Fig. 2.
Floor level
Fig. 3
Table 1
Max. Allowable Tubing
Length at Shipment
ft. (m)
Min. Allowable Tubing
Length at Shipment
ft. (m)
Limit of Tubing
Length (L)
ft. (m)
Limit of Elevation
Difference (H)
ft. (m)
Required Amount of
Additional Refrigerant
oz./ft. (g/m)*
Model
CG1411
25 (7.5)
13 (4)
49 (15)
23 (7)
0.27 (15)
* If total tubing length becomes 25 to 49 ft. (7.5 to 15 m) (max.), charge additional refrigerant (R22) by 0.27 oz./ft. (15 g/m).
No additional compressor oil is necessary.
25
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7-1-2. Outdoor Unit
Exhaust fan
NO
Hot air
AVOID:
● heat sources, exhaust fans, etc. (Fig. 4)
● damp, humid or uneven locations.
Heat source
Outdoor unit
DO:
● choose a place as cool as possible.
● choose a place that is well ventilated.
● allow enough room around the unit for air intake/
Fig. 4
exhaust and possible maintenance. (Fig. 5a)
Obstacle above
CAUTION
Min.
Min.
7 ft.
(2 m)
7 ft.
Air intake
Min. 6" (15 cm)
Valve side
Min. 10"
(25 cm)
(2 m)
● Install the outdoor unit above snowfall line.
● Do not place objects on or sit on the outdoor
unit. Also, never block the air intake/outlet or
exhaust. Distortion of the outdoor unit or
incomplete combustion may result.
Min. 6"
(15 cm)
Air discharge
Min. 12"
(30 cm)
Ground
● Touching the air exhaust can cause a burn.
Min. 6 in.
(15 cm)
Air intake
Take special care for children not to touch it.
Fig. 5a
● Do not introduce foreign matter into the air
intake/outlet or exhaust. Do not insert point-
ed objects, such as sticks.
● When the ambient temperature is dropping, a
white cloud or fog may be seen blowing from
the unit. This does not indicate a problem.
● The distance between any building opening*
and the exhaust must be 24 in. (60 cm) or
more.
● Locate the outdoor unit away from windows
to avoid possible entry of exhaust gases into
the building. Pay special attention to the win-
dows of a neighboring house or building.
● If there is a window within 24 in. (60 cm) of
the exhaust, make sure it is not located
inside the projected exhaust area within
24 in. (60 cm) above, within 6 in. (15 cm)
below, within 6 in. (15 cm) on either side, or
within 6 in. (15 cm) in front of the exhaust.
* Meaning of “building opening”
Windows or doors which can be opened, but not
including those which are fixed or cannot be
opened.
26
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● provide a solid base (level concrete pad, concrete
block, 4 in. × 16 in. (10 × 40 cm) beams or equal),
a minimum of 4 in. (10 cm) above ground level to
reduce humidity and protect unit against possible
water damage and decreased service life (Fig. 5b).
Exhaust
guard
Anchor bolts
(4 pcs.)
● use lug bolts or equal to bolt down unit, reducing
Exhaust
port
vibration and noise.
● use only the type of gas indicated on the name-
plate. This plate is located on the right side of the
outdoor unit, and should be checked before gas
line connection.
Screws
Min. 4" (10 cm)
Fig. 5b
7-2. Recommended Wire Length and Diameter
Regulations on wiring diameter differ from locality to locality. For field wiring requirements, please refer to your
local electrical codes. Carefully observe these regulations when carrying out the installation.
NOTE
Refer to the wiring system diagram (Fig. 6).
Refer to your local codes or in the absence of local codes with the National Electric Code: ANSI/NFPA70.
WARNING
WIRING SYSTEM DIAGRAM
● Be sure to comply with local codes on running
(INTER UNIT)
Power line
115V
wiring from the outdoor unit to the indoor unit
(size of wire and wiring method, etc.).
INDOOR UNIT
OUTDOOR UNIT
TERMINAL (4P)
TERMINAL (6P)
● Each wire must be firmly connected.
1
2
3
4
1
2
3
4
● No wire should be allowed to touch refrigerant
tubing, the compressor, or any moving part.
Grounding line
G
G
Disconnect switch
(Field supply)
WARNING
5
6
● To avoid the risk of electric shock, each air
conditioner unit must be grounded.
G
L1 L2
Power supply:
Single-phase 60 Hz
115 VAC
CAUTION
Fig. 6
● Be sure to connect the power supply line to the
outdoor unit as shown in the wiring diagram. The
indoor unit draws its power from the outdoor
unit.
27
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7-3. Remote Control Unit Installation Position
The remote control unit can be operated from either a non-fixed position or a wall-mounted position.
To ensure that the air conditioner operates correctly, do not install the remote control unit in the following places:
● In direct sunlight
● Behind a curtain or other place where it is covered
● More than 26 ft. (8 m) away from the air conditioner
● In the path of the air conditioner’s airstream
● Where it may become extremely hot or cold
● Where it may be subject to electrical or magnetic interference
7-3-1. Mounting on a Wall
Removable mounting
a) Removable mounting
Wall
1) Momentarily hold the remote control unit at the desired
mounting position.
2) Confirm that the air conditioner responds correctly when you
Special
mounting
press keys on the remote control from that position.
screw
3) After confirming correct operation, use a screwdriver to screw
(Packed in indoor unit)
the supplied special mounting screw into the wall. (Fig. 7)
4) Hang the remote control unit from the special mounting
screw.
Fig. 7
b) Non-removable mounting
1) Momentarily hold the remote control unit at the desired
mounting position.
Non-removable mounting
2) Confirm that the air conditioner responds correctly when you
press keys on the remote control from that position.
Wall
3) After confirming correct operation, use a screwdriver to screw
the mounting screw into the wall. (Fig. 7)
4) Remove the remote control cover by sliding it downward.
5) Remove the batteries of the remote control unit.
Screw
(Packed in indoor unit)
6) Use a screwdriver to screw the remote control unit securing
screw into the wall through the hole in the battery compart-
ment. (Fig. 8)
Fig. 8
7) Replace the batteries.
8) Again confirm that the remote control unit operates correctly.
28
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8. FUNCTION
8-1. Motion Explanation
8-1-1. Heating
Heating operation begins with the refrigerant pump down cycle to move refrigerant into the heating circuit of the
system. Simultaneously, gas burner ignition is initiated for a period of about 1 minute.
When the refrigerant transport period is completed, refrigerant is contained within the heating circuit tubing and
retained there by the 2 check valves. The refrigerant pump down circuit condition is established by the reversing
valve set to the heating position and the ON/OFF valve, V1, is closed.
Upon completion of the pump down phase, the ON/OFF valve is opened for normal heating operation.
Cooling heat transfer tubing in the outdoor section is blocked from refrigerant flow by check valves during the
heating cycle.
Heating circuit refrigerant tubing is in contact with the exterior wall of the aluminum heat exchanger above the gas
burner. Heated refrigerant is circulated from the outdoor heat exchanger tubing to the indoor heat transfer tubing
by operation of the compressor. Controls maintain refrigerant temperature to a point above the saturation temper-
ature and so the temperature is circulated as a gas.
Refrigerant flow is through the ON/OFF valve, V2, under stable conditions to provide for low power operation.
Low power operation is initiated (V2 opens) when thermistor-1 senses the temperature of equalization at 263 psig
(18.5 kg/cm2).
8-1-2. Cooling
Identical to operation for a typical ductless split air conditioner (heat pump).
Gas inlet
● Indoor Unit
● Outdoor Unit
Manual
shut-off
valve
Exhaust chimney
Outdoor heat exchanger
Solenoid
valve 1
Refrigerant
Heater
Room temperature sensor
Solenoid
valve 2
Capillary tube
Check valve 1
Outdoor fan
outdoor fan motor
Thermistor 2
Fan
Indoor
Proportional
control valve
Bimetal
thermostat
V1 (ON/OFF valve)
heat
V2 (ON/OFF valve)
Thermal
fuse
exchanger
Narrow tube
Wide tube
Thermistor 1
Check
valve 2
Reversing
valve
Accumulator
Inter-unit cable
Combustion
blower fan
Combustion
blower motor
Compressor
Coil temperature sensor
Cooling
Heating
29
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8-1-3. Combustion Control
(1) Combustion
Combustion air is supplied into the burner for 20 seconds prior to ignition. The variable speed combustion air
blower motor speed is sensed and controlled. After this pre-purge is competed, spark ignition is provided at the
burner. Burner condition is monitored continuously during the burning period.
(2) Safety Controls
Following safety devices function to control the gas solenoid valve to shut off
● Flame Detection Circuit: Stops gas flow with flame sensor circuit
● Bimetal Thermostat:
● Thermal Fuse:
Stops gas flow with bimetal thermostat at 221°F (105°C)
Stops gas flow with thermal fuse at 302°F (150°C) — replaceable fuse
Protected by internal 3A and 5A device
● Fuse-Control Circuit:
Supply
Gas inlet
Exhaust
Joint
Refrigerant
heater
Solenoid
valve 1
Solenoid
valve 2
Combination
gas valve
Ignition
electrical rod
Flame sensor
probe
Flame sensor
circuit
Air
Power
supply
Combustion
blower fan
Combustion
blower motor
Ignition
circuit
Timer circuit
30
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8-2. Cooling
8-2-1. Room Temperature Control
● Room temperature control is obtained by cycling the compressor ON and OFF under control of the room
temperature sensor in the indoor unit.
● All information is transmitted every 3 minutes by the remote control unit to the controller in the indoor unit.
Thermo. Thermo.
Thermo.
ON
OFF
ON
Thermo.
OFF
Set temp.
T°F
T – 1°F
More than
3 minutes
3 minutes
OFF
3 minutes
3 minutes
OFF
Compressor
Outdoor fan
Indoor fan
OFF
OFF
Set speed
● The control circuit will not attempt to turn the compressor ON until the compressor has been OFF for at
least 3 minutes. To protect the compressor from stalling out when trying to start against the high side
refrigerant pressure, the control circuit has a built-in automatic time delay to allow the internal pressure to
equalize.
● As a protective measure, the control circuit switches the compressor OFF after 3 minutes or more of com-
pressor operation.
● Thermo. ON: When the room temperature is above T°F (T°F is set temperature).
Compressor ➔ ON
● Thermo. OFF: When the room temperature is equal to or below set temperature T – 1°F.
Compressor ➔ OFF
31
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8-2-2. Freeze Prevention (Cooling)
● This function prevents freezing of the indoor heat exchange coil.
● When the compressor has been running for 6 minutes or more and the temperature of the indoor heat
exchange coil falls below 36°F (2.4°C), the control circuit stops the compressor for at least 6 minutes. The
compressor does not start again until the temperature rises above 46°F (8°C) or 6 minutes have elapsed.
Indoor heat exch.
coil temp.
46°F
More than
10 minutes
Set temp.
36°F
More than
3 minutes
More than
3 minutes
6 minutes
Compressor
Indoor fan
Set speed
32
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8-3. Heating
8-3-1. Room Temperature Control
● Room temperature control is obtained by cycling the compressor ON and OFF under control of the room
temperature sensor in the indoor unit.
● All information is transmitted every 3 minutes by the remote control unit to the controller in the indoor unit.
Thermo.
OFF
Thermo.
OFF
Thermo.
ON
Thermo.
ON
Set temp.
T+2°F
T+1°F
More than
3 minutes
More than
3 minutes
3 minutes
3 minutes
OFF
Compressor
OFF
OFF
Combustion
OFF
OFF
OFF
OFF
OFF
Reversing
valve coil
30
30
sec.
sec.
Set
speed
Indoor fan
Set speed
LL
LL
Indoor heat exch.
coil temp.
113°F
(45°C)
90°F
(32°C)
Operation button
OFF
● The control circuit will not attempt to turn the compressor ON until the compressor has been OFF for at
least 3 minutes. To protect the compressor from stalling out when trying to start against the high side
refrigerant pressure, the control circuit has a built-in automatic time delay to allow the internal pressure to
equalize.
● As a protective measure, the control circuit switches the compressor OFF after 3 minutes or more of com-
pressor operation.
● Thermo. ON: When the room temperature is below T + 1°F (T°F is set temperature).
Compressor ➔ ON
● Thermo. OFF: When the room temperature is equal to or below set temperature T + 2°F.
Compressor ➔ OFF
33
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8-3-2. Refrigerant Control
(1) Thermistor 1
1) Initial check:
Must be able to confirm temperature increase of 2°F (1°C) within approximately 1 minute.
Objectives: 1. To detect error in switching reversing valve
2. To detect disconnection of Thermistor 1
2) Limit on amount of combustion at low temperature:
When starting up at low temperature, this function prevents rapid increase in temperature of refrigerant.
1. Minimum combustion at 50°F (10°C) or below
2. Limits combustion up to 70% of the maximum rated power at 95°F (35°C) or below
3) Bypass valve operation:
Opens the bypass valve at 117°F (47°C) and reduces power consumption.
4) Limit on amount of combustion at high load:
● Limits amount of combustion at 144°F (62°C)
Resets when temperature decreases to 140°F (60°C).
● Stops combustion at 149°F (65°C)
Resets when the temperature decreases to 131°F (55°C). (Compressor continuously operates.)
Error stop occurs after combustion stops eight times. (Operation lamp on indoor unit blinks.)
(2) Thermistor 2
1) Limit on amount of combustion:
Limits combustion when temperature exceeds 131°F (55°C). The range is proportionally controlled
between the minimum and maximum temperatures.
2) Combustion stop:
Stops combustion when temperature exceeds 185°F (85°C).
Error stop occurs after combustion is interrupted (stops) eight times. (Operation lamp on indoor unit
blinks.)
3) Detection of bypass valve operation
Must be able confirm temperature increases 5°F (3°C) within approximately 1 minute.
34
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8-3-3. Combustion Saving Function
After Thermo. OFF occurs, shifts to Continuous Combustion Mode, Save Mode 1, or Save Mode 2, according to
the load inside the room.
<Normal Combustion Mode>
Performs combustion which is proportionally controlled by setting the maximum amount of gas equivalent
to the amount of rated combustion.
<Save Mode 1>
Performs combustion which is proportionally controlled by setting the maximum amount of gas to about
70% of the rated amount of combustion.
<Save Mode 2>
Performs continuous combustion by setting the amount of gas equivalent to the minimum amount of com-
bustion.
(1) Save Function
If Thermo. ON lasts less than 10 minutes under Normal Combustion Mode subsequent to Thermo. OFF, Save
Mode 1 is automatically selected for the following Thermo. ON, and then Save Mode 2 is selected if Save Mode 1
lasts less than 10 minutes.
Thermo.
OFF
Less than Thermo.
10 minutes OFF
Less than
10 minutes
Thermo. Less than Thermo.
OFF 10 minutes OFF
Normal Combustion
Mode
Save Mode 1
Save Mode 2
Stop combustion
(2) Reset Function
When combustion in Save Mode 1 continues past 10 minutes, it goes back to Normal Combustion Mode (Save
Mode 2 to Save Mode 1). However, if Thermo. OFF occurs again within 10 minutes under Normal Combustion
Mode, Save Mode 1 is selected at the next Thermo. ON (Save Mode 1 to Save Mode 2).
Thermo. 10 minutes
OFF
10 minutes
Less than
10 minutes
Thermo. 10 minutes
OFF
Normal Combustion
Mode
Save Mode 1
Save Mode 2
35
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8-3-4. Cold Draft Prevention Function (During Heating Operation)
This function prevents a cold draft from being released at the beginning of Heating Operation or during operation
of the room temperature thermo.
Temperature of
coil temperature sensor
117°F (47°C)
90°F (32°C)
Fan speed
Set speed
LL
Change in Fan Speed
● When Heating Operation is started with the temperature of the heat exchanger less than 90°F (32°C):
● Until the temperature of the heat exchanger goes over 117°F (47°C), fan speed varies according to the
Temperature of
heat exchanger
Less than 90°F (32°C)
LL
90 – 117°F (32 – 47°C)
LL – Set speed
Over 117°F (47°C)
Set speed
Fan speed
temperature of the heat exchanger.
● Once the temperature of the heat exchanger rises over 117°F (47°C), cold draft prevention function is
released.
36
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8-4. Fan Speed Control
During Cooling Operation Automatic fan speed
3 minutes
OFF
TS + 4°F (2°C)
3 minutes
ON
TR:
Room temp.
TS + 2°F (1°C)
Set Value (TS)
H
Fan Speed
M
L
Compressor ON
OFF
* For 3 minutes after power ON, the compressor does not turn on.
During Heating Operation Automatic fan speed
TR:
Room temp.
T
S + 2°F (1°C)
Ts
TS – 2°F (1°C)
30 seconds
30 seconds
H
Fan Speed
M
LL
Compressor ON
Compressor OFF
* For 30 seconds after the compressor is turned OFF, the previous fan speed is maintained.
37
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8-5. Dry Operation (Dehumidification)
● Dry operation uses the ability of the cooling cycle to remove moisture from the air, but by running at low
level to dehumidify without greatly reducing the room temperature. The air conditioner repeats the cycle of
turning ON and OFF automatically as shown in the chart below according to the room temperature.
Room temp.
Cooling operation
T + 4°F (2°C)
* Dry A Zone
Compressor:
Continuous operation
Set temp. T°C
FMI (indoor fan): L (low speed)/LL (very low speed) intermittent ventilation only while the compressor is ON.
T – 2°F (1°C)
* Dry B Zone
Compressor:
Intermittent operation (ON for 3 minutes and OFF for 9 minutes)
FMI (indoor fan): L (low speed)/LL (very low speed) intermittent ventilation only while the compressor is ON.
Room temp.
59°F (15°C)
Monitor Zone
Both the indoor and outdoor units stop.
NOTE
● Intermittent ventilation occurs by switching the indoor fan speed between L ↔ LL.
● Dry operation does not occur when the room temperature is under 59°F (15°C), which is the Monitor
Zone.
● When the compressor stops, the indoor fan stops as well.
38
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8-6. Automatic Operation
(1) Normal
Room temperature at start of operation
TR °F (°C)
Temperature set automatically
°F (°C)
Operation mode
Cooling
88 (30) ≤ TR
82 (27)
80 (26)
78 (25)
76 (24)
76 (24)
84 (24) ≤ TR < 88 (30)
80 (26) ≤ TR < 84 (28)
72 (22) ≤ TR < 80 (26)
TR < 72 (22)
Dry
Heating
● Set temperature can be shifted ± 4°F (2°C), in 2°F (1°C) steps.
● If operation commences again within 2 hours of the previous operation, the previous setting is applied.
(2) Changing fan speed “Automatic”
Fan speed is automatically selected by the temperature difference between the room temperature (TR) and set
temperature (TS).
During Cooling Operation
Room temperature (TR) and set temperature (TS)
TR ≥ TS + 4°F (2°C)
Fan speed
H / High
TS + 4°F (2°C) > TR ≥ TS + 2°F (1°C)
TS + 2°F (1°C) ≥ TR ≥ TS
M / Medium
L / Low
TS > TR (Thermo. OFF)
L / Low
During Heating Operation
Room temperature (TR) and set temperature (TS)
TR ≤ TS
Fan speed
H / High
TS < TR < TS + 2°F (1°C)
M / Medium
LL / Very Low
TS + 2°F (1°C) ≤ TR (Thermo. OFF)
39
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8-7. Freeze Prevention
When the evaporation temperature drops to less than the temperatures stated below during Cooling or Dry
Operation, the operation of the outdoor unit is automatically stopped to prevent the heat exchanger from
freezing up.
(1) Cooling / Dry Cooling Zone: Dry A Zone
< Conditions of freeze prevention operation >
a. Temperature of heat exchanger is less than 36°F (2.4°C)
b. During Cooling or Dry Operation
When the conditions of a, b, and c are met
c. More than 6 minutes pass after start of operation
< Conditions of Reset >
When temperature of heat exchanger rises to 46°F (8°C) or more.
(2) Dry B Zone
< Conditions of freeze prevention operation >
a. Temperature of heat exchanger is less than 36°F (2.4°C)
b. During Dry Operation
When both conditions a and b are met
< Conditions of Reset >
When temperature of heat exchanger rises to 46°F (8°C) or more.
* During freeze prevention operation, the indoor fan stops (Dry B Zone only).
40
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8-8. Overload Prevention (Heating)
8-8-1. Indoor Unit
● This function prevents overheating of the indoor heat exchange coil.
● When the temperature of the indoor heat exchange coil rises above 131°F (55°C), and if the indoor fan is
L (low speed), then the fan speed changes from L (low speed) to M (medium speed).
131°F
(55°C)
Indoor heat
exch.coil
temp.
113°F
(45°C)
H or M or L
H→ H, M→ M, L→ M
Indoor fan
ON
Compressor
8-8-2. Outdoor Unit
● Unless the temperature of Thermistor 1 drops to 144°F (62 °C) or less from the point A within 1 minute,
The burner is set to M (point C.)
● Reset is activated when the temperature of Thermistor 1 drops to 122°F (50°C) or less, with the burner
being set to H.
● High-load protection for the outdoor unit is operated independently from the high-load protection for the
indoor unit.
Thermistor 1
B
A
149°F
(65°C)
144°F
(62°C)
1 minute
122°F
(50°C)
C
H
H
M
Stop
Combustion
Compressor
L
41
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9. OPERATION FLOWCHARTS
9-1-2. Stopping Flowchart
Operation starts
9-1. Cooling, Dry
9-1-1. Starting Flowchart
Cool • Dry
Operation lamp Light OFF
Compressor
Indoor fan
OFF
OFF
OFF
Operation starts
Outdoor fan
Troubleshoot
Operation lamp light ON
Dry
Flap motor
ON
1
2
9-1-3. Check Refrigerant Cycle Flowchart
NO
NO
Room temp. ≥ Preset
Room temp. ≥ Preset
Room temp. ≥ 15°C
Cooling operation
Cooling
+2
+2
Indoor fan: Start speed ON
Outdoor fan motor OFF
Compressor
OFF
NO
Intake-outlet
temp. lower than
14 to 18°F
YES
YES
YES
Normal
Cooling
Dry A
Dry B
Monitor
Indoor fan
NO
Room temp. higher
than preset temp.
YES
Indoor fan
Low &
very low
Low &
very low
Indoor fan
Indoor fan
Outdoor fan motor
Compressor
ON
Outdoor fan motor OFF
Compressor
Obstructed heat exchanger
NO
NO
3 min. ON
9 min. OFF
Intermittent
YES
Outdoor fan motor
Compressor
Outdoor fan motor
Compressor
Current
(8.5A)
ON
Over-charge of
refrigerant
YES
YES
NO
Coil thermistor
(higher than 46°F)
Pressure at
service port
(86 to 128psi)
Compressor failure
YES
Refrigerant shortage
Compressor
OFF
Capillary tube blockage
Outdoor fan motor OFF
Troubleshoot
Coil thermistor
(higher than 36°F)
Outdoor fan motor OFF
9-1-4. Time Flowchart
YES
Flap motor
Indoor fan
OFF
OFF
3 min. timer
count-up
ON timer
OFF timer
Indoor power relay OFF
All lamps Light OFF
Cool
Dry
Heat
Remote control unit
OFF timer set
Operation starts
Outdoor power relay ON
Outdoor fan motor
Compressor
ON
ON
18
Timer lamp
Light ON
Compressor
OFF
Remote control unit
OFF timer set
NO
NO
Dry
Overload relay works
Cooling
19
Timer passes
YES
Light OFF
Timer lamp
Light ON
YES
Timer lamp
YES
NO
Safety device works
Timer passes
Cool
Dry
YES
Heat
Timer lamp
Light OFF
Operation lamp Light OFF
Cool
Stop dry
Heat
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10. PROCEDURE FOR DISMANTLING THE UNIT
10-1. Procedure for Dismantling the Indoor Unit
(1) How to remove grille
➀ Close the flap (upper airflow adjustment plate)
and open the screw covers. Then remove the
screws (2).
➁ Remove the fixing tabs (3) at the bottom of
decorative grille.
➂ Detach the attachment tabs (2) at the top of the
grille by lifting the grille.
(2) How to remove PCBs
Detach all the wire connectors on PCB A and B in the electrical component box, and remove the tabs
holding the PCBs. Detach the PCBs A and B from the top.
44
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(3) How to remove electrical component box
➀ Remove the screw for ground screw (green, 1).
➁ Remove the connectors for sensor, fan motor
and flap motor, which are connected to the
electrical component box.
➂ Remove the screws (3) attaching the electrical
component box, and remove the box from the
frame by pressing the tabs at the back of the
box.
(4) How to remove drain pan
Remove the screw (1) attaching the drain pan and remove it upward by pressing the tabs (one each for
right and left) hooked to the frame.
45
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(5) How to detach heat exchanger
➀ Remove the screws (2) attaching the metal clip
of the tube. Extend the supplementary tubing at
the back of the unit.
➁ Remove the screws (3) attaching the heat
exchanger. Remove the tabs holding the resin
boss at the top right of the heat exchanger, and
then pull the heat exchanger off from the
frame.
(6) How to detach fan and fan motor
➀ Loosen the hexagonal screw in the fan boss
➁ Remove the screw (1) for the fan bearing
which attaches the fan.
cover.
➂ Pull out the fan boss from the fan motor shaft,
➃ Remove the fan motor by picking it up.
and then pull out the fan to the left.
46
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10-2. Procedure for Dismantling the Outdoor Unit
(1) How to remove the external panels
➀ Remove the screws (2) of the top panel and
➁ Remove the screw (1) of the side cover, the
the screws (5) of the front panel.
screws (3) of the terminal block cover, and the
screws (2) of the terminal block.
(2) How to detach the rear panel
➀ Remove the front panel and unscrew the
screws (9) attaching the rear panel, and detach
the manual shut-off valve.
(3) How to detach the combustion blower
➀ Remove the screws (2) attaching the blower.
➁ Detach CN5 and CN14 on outdoor unit PCB.
47
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(4) How to detach combination valve and gas conduit
➀ Remove the screw (1) for the attachment plate of the combination valve in back of the main unit.
➁ Detach the 2 connectors (CN11 for proportional valve and CN08 for solenoid valve).
➂ Remove the screws (2) attaching the gas conduit in front of the combustion chamber, and take off the
combination valve with gas conduit.
➂
(5) How to detach combination valve
➀ Remove the attachment screws, and dismantle as shown below.
48
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(6) How to detach ignition probe and flame sensor electrode
➀ Detach the connector of the ignition probe.
➁ Remove connector CN17 from outdoor unit PCB.
➂ Remove the screw (1) for the attaching metal clip and remove the ignition probe and flame sensor elec-
trode. (Flame sensor electrode is replaced together with the wires connected.)
(7) How to detach burner unit
➀ Remove the attachment screws (6) and pull the burner unit to the front. (When reattaching the burner unit,
replace the center screw first.)
(Rear view)
(8) How to detach gas nozzle
➀ Remove burner unit.
➁ Remove the screws (2) attaching the nozzle.
49
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11. POINTS TO DIAGNOSE
11-1. Indoor Unit Alarm Signal
Alarm Signal
Error Meaning
Operation
Information
Misconnection of inter-unit wiring
Room temp. thermistor is defective
Heating • Cooling • Dry Connect correctly
Heating • Cooling • Dry Normal: 9 – 11 kΩ at 50°F
4 – 6 kΩ at 77°F
Power Lamp Heat exch. thermistor is defective
Flashing
Heating • Cooling • Dry Normal: 100 – 120 kΩ at 50°F
50 – 60 kΩ at 77°F
Fan motor is defective
Heating • Cooling • Dry Alarm signal appears in 1 min.
Heating • Cooling • Dry More than 17 amp.
Heating • Cooling • Dry Less than 0.8 amp.
Amp. current is high
Amp. current is low
Heat exch. thermistor detects high temp
Heating
More than 154°F (68°C)
11-2. Manifold Pressure
Outdoor Unit
Fuel
Inlet Pressure W.C. (kPa)
Manifold Pressure W.C. (kPa)
Low
High
Lighting (10 sec.)
LD4, 5 Flashing
0.63 (0.157)
LD2, 3 Flashing
3.43 (0.853)
(verification)
2.32 (0.579)
CG1411
Natural gas
7.0 (1.74)
● To set manifold pressure there are 2 settings – low pressure and high pressure.
● Use SW1 to move to the 2 modes used to adjust the two pressures.
Press SW1 1 time for low pressure.
Press SW1 2 times for high pressure.
Press SW1 3 times for normal operation.
● Use VR1 to set the low, lighting pressure and VR2 to set the high pressure.
● Step 1: Set low pressure
1. Press SW1 and hold until LEDs 4 and 5 flash.
2. Adjust the low pressure with VR1 to 0.63 inches of water column.
● Step 2: Set high pressure
1. Press SW1 again and LEDs 1 and 2 will flash.
2. Adjust pressure with VR2 to 3.43 inches of water column.
● Step 3: Set lighting pressure
Lighting pressure will be set automatically from Step 1 and Step 2.
NOTE
Check these settings 2 or 3 times to insure all are correct then reset until no LEDs flash.
50
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11-3. Checking Electrical Components
11-3-1. Components
Flow
No.
Measurement Target
CO. No. Wire Color
(Normal) Upper: Volt, Amp.
(Normal) Lower: Resistance
Remarks
Flap motor
DC 1 – 12 (Pulse)
1
T
WHT – BLU
300 – 450 Ω
AC 100 – 130 V
30 – 60 Ω
DC 1 – 12V
BLU – BRN
RED – BLU
2
S
Indoor fan motor
More than 3000 Pulse/min.
50°F (10°C) 9.0 – 11.0 kΩ
68°F (20°C) 5.5 – 7.0 kΩ
86°F (30°C) 3.5 – 4.5 kΩ
Indoor
room temperature sensor
3
Z
1WHT – GRY2
50°F (10°C) 100 – 120 kΩ
Indoor
coil temperature sensor
4
5
U
B
3BLK – BLK4
BLK – BLK
68°F (20°C) 50 – 60 kΩ
AC 100 – 130 V
Reversing valve
300 – 400 Ω
BLK – WHT
WHT – PNK
BLK – PNK
6
7
8
R
Terminal block
KM
1 – 5 Ω
Compressor
WHT
3 – 5 A
Ampere current
68°F (20°C) 9.8 – 10.8 KΩ
86°F (30°C) 6.8 – 7.3 KΩ
140°F (60°C) 2.4 – 2.6 KΩ
Outdoor
thermistor 1, 2
BLK – BLK
AC 30 – 115 V
10 – 30 Ω
DC 1 – 5 V
D
N
O
J
PUR – PUR
RED – BLU
BLU – BLU
BLK – Ground
YEL – YEL
Combustion blower motor
9
Combustion blower motor
fan speed sensor
More than 1000 Pulse/min.
DC 5 – 24 V
40 – 160 Ω
AC 100 – 130 V
Proportional
control valve
!
"
#
$
Flame sensor probe
More than DC 1 µA
Not more than DC 1 V
Not more than 1 Ω
DC 90 – 120 V
Thermal fuse
bimetal thermostat
P
I
WHT – WHT
Gas valve 1
1 – 2.5 kΩ
DC 90 – 120 V
1 – 2.5 kΩ
AC 100 – 130 V
%
&
I
ORG – ORG
RED – RED
Gas valve 2
G
Ignition transformer
AC 100 – 130 V
300 – 500 Ω
AC 100 – 130 V
300 – 500 Ω
AC 100 – 130 V
(
)
E
BLK – BLK
ON/OFF valve 1
ON/OFF valve 2
F
BLK – BLK
WHT – BLU
C
~
+
WHT – BRN
WHT – PNK
70 – 150 Ω
Outdoor fan motor
Overload relay
V
300 – 500 Ω
Not more than AC 1 V
Not more than 1 Ω
W
PNK – PNK
Outdoor Unit Voltage at Terminal Block
Operation
1 – 2
1 – 3
1 – 4
Cooling • Dry
Heating
OFF
100 – 130 V
100 – 130 V
0 V
100 – 130 V
100 – 130 V
100 – 130 V
0 V
100 – 130 V
0 V
51
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11-3-2. Indoor Unit
Indoor Unit
Transformer Voltage • Coil Resistance
Measurement Target (Normal) Upper: Voltage
CN
Wire Color
(Normal) Lower: Resistance
AC 100 – 130 V
Y1
WHT – WHT
45 – 100 Ω
AC 12 – 18 V
Y2
BRN – BRN
0.5 – 4 Ω
11-3-3. Outdoor Unit
Outdoor Unit
Transformer Voltage • Coil Resistance
Measurement Target (Normal) Upper: Voltage
CN
Wire Color
(Normal) Lower: Resistance
AC 100 – 130 V
H
ORG – ORG
50 – 100 Ω
AC 100 – 130 V
0.5 – 4 Ω
AC 20 – 30 V
1 – 10 Ω
AC 10 – 15 V
Q2
Q1
Q1
YEL – YEL
RED – RED
BLU – BLU
5 – 15 Ω
52
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12. TROUBLESHOOTING
12-1. Check Before and After Troubleshooting
12-1-1. Check Power Supply Wiring
● Check that power supply wires are correctly connected to Terminals L and N on the terminal plate in the
outdoor unit.
(Inter-unit)
Power line
115V
INDOOR UNIT
Terminal (4P)
OUTDOOR UNIT
Terminal (6P)
1
2
3
4
1
2
3
4
Grounding line
G
G
Disconnect switch
(Field supply)
5
6
G
L1 L2
Power supply
Single-phase 60 Hz
115 VAC
12-1-2. Check Inter-Unit Wiring
● Check that inter-unit wiring is correctly connected to the outdoor unit from the indoor unit.
12-1-3. Check Power Supply
● Check that voltage is in specified range (±10% of the rating).
● Check that power is being supplied.
12-1-4. Check Lead Wires and Connectors in Indoor and Outdoor Units
● Check that coating of wires is not damaged.
● Check that lead wires and connectors are firmly connected.
● Check that wiring is correct.
53
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12-2. When the Air Conditioner Does Not Work at All (Both Indoor and
Outdoor Units) — Operation Lamp Does Not Light
12-2-1. Malfunction in Power Supply
➀ Check if operation selector of the indoor unit is set to ON. If it is not, set the switch to ON.
➁ Check if the circuit breaker is disengaged or if electricity is not being supplied properly.
* Use a circuit tester (set to AC range).
Normal
AC 104 – 126 V
No abnormalities, proceed to 12-2-2.
In case of abnormality ➞ Check power source
12-2-2. Abnormalities in Power Transformer
➀Check voltage on the secondary core side.
Measure voltage 2P connector of TRANS 2 (without disconnecting connectors).
Normal TRANS 2 BRN – BRN AC 12 – 18 V
*Use a circuit tester (set to AC range).
Caution: Care should be taken that the tips of the tester rods do not touch each other since the circuit is
electrically charged.
In case of abnormality ➞ Replace the power transformer.
12-3. Operation Lamp Blinks (It Keeps Blinking after 3 Minutes Following
Start of Operation)
If the operation lamp continues to blink more than 3 minutes, check for the following possible causes in this order:
(1) Incorrect Wiring of Inter-unit Wiring (connector No. 1 – 4)
(2) Thermistor Abnormality (Indoor Unit Only)
(3) Protective Circuit of Outdoor (Burner) Unit Operated (during heating operation only)
(4) CT Detection
(5) Indoor Fan is Defective
(6) Power Circuit Wiring Error
(7) Outdoor Unit Power Supply Failure
(8) Outdoor Unit Power Transformer Defective
(9) Outdoor Unit Compressor Motor Overload Relay Has Operated
(10) Outdoor Unit Compressor Motor Defective
12-3-1. Incorrect Wiring of Inter-unit Wiring
If the blinking of the operation lamp occurs upon initial operation following installation work, incorrect wiring of
inter-unit cable between indoor and outdoor units is likely. Correctly rewire the inter-unit cable.
Caution: Be sure to turn off the circuit breaker switch before carrying out the wiring work.
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12-3-2. Thermistor Abnormality (Indoor Unit Only)
Check open / short circuit at the coil thermistor and room thermistor (between 1 and 2 of the lamp 8P) on the
PCB of the indoor unit (but only when the room temperature is 14 to 113°F).
12-3-3. Protective Circuit of Outdoor (Burner) Unit Operated
Check the following according to the failure display. Check items listed in 12-6. Heating Operation Not Possible.
● light off
● light on
LED lamps
2 3 4 5
No.
Caused by (outdoor unit)
Meaning
— Normal
● ● ● ● Normal operation
— Defective in IC chip (E2PROM)
● ● ● ● Cannot read IC chip data or missing IC chip on outside
PCB
— Defective Gas Valves
● ● ● ● Detects abnormality in Gas Valve Circuit at initial
checking
A
B
C
D
E
F
Detective Thermistor 1
Detective Thermistor 2
Limit switch
● ● ● ● Open or Short of Thermistor 1
● ● ● ● Open or Short of Thermistor 2
● ● ● ● Thermal fuse or Bimetal Thermostat tripped
● ● ● ● Defective abnormal in Flame Current Circuit
● ● ● ● Couldn’t establish flame
Flame current circuit
Lighting failure
Lost flame
● ● ● ● Flame Sensor Circuit detects lost flame and could not
establish the flame
G
H
Incorrect combustion motor speed ● ● ● ● Incorrect combustion motor speed
Over-time period in retry
● ● ● ● Thermistor 1 or Thermistor 2 temperature did not go
down in set period
I
Over number of times in retry
Bypass Valve (V2) not open
● ● ● ● Combustion stopped by Thermistor 1 or Thermistor 2
more than set number
J
● ● ● ● Bypass Valve failure or drop-out of Thermistor 2
— Reversing Valve not working
● ● ● ● Reversing Valve failure, drop-out of Thermistor 2, or
shortage of refrigerant
Note: Refer to 12-8. Failure Display on Outdoor Unit and Correction Method.
12-3-4. CT Detection (Refer to 12-3-9 and 12-3-10.)
(1) Compressor abnormality
(2) Compressor over-load relay engaged
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12-3-5. Indoor Fan is Defective
➀Check if the indoor fan is locked up.
Turn fan gently by hand.
When fan does not turn easily ➞ Replace fan motor
No abnormalities, proceed to check
.
➁
➁Check if motor circuit is defective.
Set temperature by remote controller so that air conditioner operates under Thermo. OFF in either cooling or
heating operation, then start operation.
Check if it operates without the operation lamp blinking for more than 3 minutes.
In case of abnormality (operation lump starts blinking after about 1 minute) ➞ Proceed to check ➂.
No abnormalities, proceed to check
.
➂
➂Check indoor unit PCB.
Measure voltage between 1 – 2 of 3P connector (Hole IC) on indoor unit PCB.
Caution: Care should be taken that the tips of the tester rods do not touch each other since the circuit is
electrically charged.
Connector No.
Between 1 – 2
Voltage
Normal
*Use a circuit tester (set to DC range).
DC 3 – 7 V
In case of abnormality ➞ Replace indoor unit PCB.
No abnormalities, proceed to check
.
➃
➃Disconnect FAN 5P connector on indoor unit PCB and measure resistance between cables.
Color
Normal BLU – BRN
BLU – PNK
Resistance
94 – 116 Ω
115 – 141 Ω
In case of abnormality ➞ Replace the indoor fan motor.
No abnormalities, replace indoor unit PCB.
12-3-6. Power Circuit Wiring Error
Check wiring of power circuit.
Set temperature by remote controller so air conditioner operates under Thermo. ON in cooling operation, then
start operation.
Check if compressor motor operates for more than 10 seconds.
It does not operate at all ➞ Proceed to check 12-3-7 and 12-3-8.
Stops operation in about 3 seconds ➞ Proceed to check 12-3-9.
No abnormalities, proceed to check 12-4.
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12-3-7. Outdoor Unit Power Supply Failure
Measure voltage between Terminals 5 – 6 on terminal block of outdoor unit.
Set temperature by remote controller so conditioner operates under Thermo. ON in either cooling or heating
operation, then start operation. Then measure voltage between Terminals 1 – 2 on terminal block of outdoor
unit.
Caution: It is not possible to measure while 3-minute restart timer is in operation.
Normal
AC 104 – 126 V
* Use a circuit tester (set to AC range).
In case of abnormality ➞ Check connection of inter-unit cable.
No abnormalities, replace indoor unit PCB.
No abnormalities, proceed to check 12-3-8.
12-3-8. Outdoor Unit Power Transformer Defective
➀Check voltage of power transformer.
Measure voltage of 4P connector (CN10A), 3P connector (CN10B) and 2P connector (CN09) of indoor unit
PCB (without disconnecting connectors).
RED – RED
BLU – BLU
20 – 30 V
10 – 15 V
85 – 115 V
4P, CN10A
Normal
3P, CN10B YEL – YEL
CN09
ORG – ORG 104 – 126 V
*Use a circuit tester (set to AC range).
Caution: Care should be taken that the tips of the tester rods do not touch each other since the circuit is
electrically charged.
In case of abnormality ➞ Replace power transformer.
No abnormalities, replace outdoor unit PCB.
12-3-9. Outdoor Unit Compressor Motor Overload Relay Has Operated
Caution: Carry out this check only after cutting power at the mains or disconnecting unit from the power
supply.
➀Check temperature overload relay for continuity.
Normal
1 Ω or less
* Use a circuit tester (set to Ω range).
In case of abnormality ➞ Check it again after more than 30 minutes (wait for it to cool down). If the result is
the same, replace the temperature overload relay.
No abnormalities, check wiring to overload relay.
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12-3-10. Outdoor Unit Compressor Motor Defective
➀Check if compressor motor is locked up.
Set temperature by remote controller so air conditioner operates under Thermo. ON in cooling operation, then
start operation.
Check if compressor operates.
In case of abnormality ➞ Stops in 2 to 5 seconds. Humming of compressor motor can be heard.
After auto restart by 3-minute timer, same thing happens. If this condition contin-
ues, replace the compressor motor.
No abnormalities, proceed to check
.
➁
➁Measure resistance of compressor motor.
Disconnect each wire from the top of the compressor and measure resistance of each phase.
Phase
R – S
S – C
C – R
Resistance
1 – 5 Ω
1 – 5 Ω
Normal
1 – 5 Ω
* Use a circuit tester (set to Ω range).
Caution: Carry out this check only after cutting power at the mains or disconnecting unit from the power
supply.
In case of abnormality ➞ Replace compressor.
12-4. Outdoor Unit Fan Does Not Work
12-4-1. Outdoor Unit Fan Motor Defective
➀Check if outdoor unit fan is locked up.
Turn fan gently by hand.
When fan does not turn easily ➞ Replace fan motor.
No abnormalities, proceed to check
.
➁
➁Measure resistance between each wire.
Color
Normal BLU – BRN
BLU – PNK
Resistance
70 – 150 Ω
300 – 500 Ω
*Use a circuit tester (set to Ω range).
In case of abnormality ➞ Replace fan motor.
No abnormalities, check continuity of each wire (PNK, BRN and BLU).
58
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12-5. Flap Motor Does Not Work
12-5-1. Louver Motor Defective
➀Set to cooling operation with flap to oscillate (movie) using remote controller and measure voltage applied to
the louver motor at FLAP terminal of 5P connector.
Color
Output Voltage
Normal
WHT and each BLU wire DC 1 – 12 V (pulse)
*Use a circuit tester (set to DC range).
In case of abnormality ➞ Replace indoor unit PCB.
No abnormalities, proceed to check
.
➁
➁Disconnect FLAP of 5P connector for louver motor and measure resistance.
Color
Resistance
Normal
WHT and each BLU wire
300 – 450 Ω
*Use a circuit tester (set to Ω range).
In case of abnormality ➞ Replace louver motor.
No abnormalities, check if there is physical or mechanical interference to louver movement.
12-6. Heating Operation Not Possible
12-6-1. Thermistor 1 Defective
Failure Display on Outdoor Unit PCB: ● ● ● ●
Check Thermistor 1 (CN15).
➀Disconnect Thermistor 1 connector (3P, BLK) from outdoor unit PCB, and measure resistance on Thermistor 1
side.
Temperature
68°F (20°C)
86°F (30°C)
140°F (60°C)
Resistance
6.0 – 7.1 kΩ
4.0 – 5.0 kΩ
1.5 – 1.7 kΩ
Normal
In case of abnormality ➞ Replace Thermistor 1.
12-6-2. Thermistor 2 Defective
Failure Display on Outdoor Unit PCB: ● ● ● ●
Check Thermistor 2 (CN16).
➀Remove Thermistor 2 connector (3P, RED) from the outdoor unit PCB, and measure resistance on the
Thermistor 2 side.
Temperature
68°F (20°C)
86°F (30°C)
140°F (60°C)
Resistance
6.0 – 7.1 kΩ
4.0 – 5.0 kΩ
1.5 – 1.7 kΩ
Normal
In case of abnormality ➞ Replace Thermistor 2.
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12-6-3. Safety Device Operated
Failure Display on Outdoor Unit PCB: ● ● ● ●
Check safety device.
➀Disconnect safety device connector (CN12, 2P, WHT) from outdoor unit PCB, and measure resistance on the
safety device.
Normal
1 Ω or less
*Use a circuit tester (set to Ω range).
In case of abnormality ➞ Replace temperature fuse or temperature limiting switch.
12-6-4. Erroneous Flame Detection
Failure Display on Outdoor Unit PCB: ● ● ● ●
Check flame sensor probe.
➀Measure voltage of alternative current between flame rod connector (1P, CN17) and ground.
Normal
AC 104 – 126 V
*Use a circuit tester (set to AC range).
In case of abnormality ➞ Replace outdoor unit PCB.
➁Remove flame rod connector, and measure direct current between connector and PCB.
Normal
DC 1µA or less
*Use a circuit tester (set to DC range).
In case of abnormality ➞ Replace outdoor PCB.
Caution: The flame rod retains electromotive force immediately after combustion ceases, therefore measure-
ment should be made while the equipment is cool.
12-6-5. Ignition Failure
Failure Display on Outdoor Unit PCB: ● ● ● ●
1) Check ignition transformer.
➀Check if ignition wires are disconnected or have voltage leak.
➁Measure AC voltage between the connectors (CN07) to the ignition electrode.
Normal
AC 104 – 126 V
*Use a circuit tester (set to AC range).
In case of abnormality ➞ Replace outdoor unit PCB.
If voltage is normal but sparking noise cannot be heard, replace the ignition electrode.
Caution: If the ignition wires are disconnected, connect them by pushing them in firmly.
2) Check gas valve (GV1).
➀Measure DC voltage at the connector (CN08) of electromagnetic valve (under heating operation, during com-
bustion).
Normal WHT – WHT DC 90 – 120 V
*Use a circuit tester (set to DC range).
In case of abnormality ➞ Replace outdoor unit PCB.
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➁Disconnect heating gas valve (GV1, CN08) connector, and measure resistance at connector.
Normal WHT – WHT 1 – 2.5 kΩ
*Use a circuit tester (set to Ω range).
In case of abnormality ➞ Replace heating electromagnetic valve.
3) Check electromagnetic valve (GV2) of the combination gas valve.
➀Measure DC voltage at electromagnetic valve connector (CN08) (under heating operation, during combustion).
Normal ORG – ORG DC 90 – 120 V
*Use a circuit tester (set to DC range).
In case of abnormality ➞ Replace outdoor unit PCB.
➁Disconnect heating electromagnetic valve connector (CN08), and measure resistance at connector.
Normal
ORG – ORG 1 – 2.5 kΩ
*Use a circuit tester (set to Ω range).
In case of abnormality ➞ Replace heating electromagnetic valve.
4) Check proportional control valve (PV).
➀Measure DC voltage at proportional valve connector (CN11) (under heating operation, during combustion).
Normal
BLU – BLU DC 5 – 30 V
*Use a circuit tester (set to DC range).
In case of abnormality ➞ Replace outdoor unit PCB.
5) Check flame rod.
➀Check if flame rod connector (CN17, 1P) is connected properly.
➁Measure AC voltage between flame rod connector and ground.
Normal AC 104 – 126 V
*Use a circuit tester (set to AC range).
In case of abnormality ➞ Replace flame rod.
➂Disconnect flame rod connector (CN17) and measure direct current at connector.
Normal DC 2µA or more
*Use a circuit tester (set to DC range).
In case of abnormality ➞ Replace flame rod.
12-6-6. Erroneous Flame-Out Condition
Failure Display on Outdoor Unit PCB: ● ● ● ●
➀Check in same manner as “Failure Display ● ● ● ●.”
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12-6-7. Combustion Blower Motor Abnormal Revolution
Failure Display on Outdoor Unit PCB: ● ● ● ●
Check combustion blower motor.
➀Measure AC voltage at blower motor connector (CN05) (under heating operation, during combustion).
Normal
PUR – PUR AC 30 – 115 V
*Use a circuit tester (set to AC range).
In case of abnormality ➞ Replace outdoor unit PCB.
➁Disconnect combustion blower motor connector, and measure resistance at connector.
Normal
PUR – PUR 10 – 30 Ω
*Use a circuit tester (set to Ω range).
In case of abnormality ➞ Replace combustion blower motor.
12-6-8. ON/OFF Valve Failure
Failure Display on Outdoor Unit PCB: ● ● ● ●
Check ON/OFF valve coil (CN06).
➀Measure AC voltage at the ON/OFF valve coil connector (under heating operation, during combustion).
Normal BLK – BLK AC 104 – 126 V
*Use a circuit tester (set to AC range).
In case of abnormality ➞ Replace outdoor unit PCB.
➁Disconnect ON/OFF valve connector and measure resistance at connector.
Normal
BLK – BLK 300 – 500 Ω
*Use a circuit tester (set to Ω range).
In case of abnormality ➞ Replace ON/OFF valve coil.
12-6-9. Reversing Valve Failure
Failure Display on Outdoor Unit PCB: ● ● ● ●
Check reversing valve coil.
➀Measure AC voltage at reversing valve coil connector (CN03) (under heating operation, during combustion).
Normal BLK – BLK AC 104 – 125 V
*Use a circuit tester (set to AC range).
In case of abnormality ➞ Replace outdoor unit PCB.
➁Disconnect reversing valve coil connector and measure resistance at connector.
Normal
BLK – BLK 300 – 500 Ω
*Use a circuit tester (set to Ω range).
In case of abnormality ➞ Replace reversing valve coil.
Caution: Reversing valve failure can be displayed when there is a shortage of refrigerant. Therefore if the
above check shows normal, check the amount of refrigerant.
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12-7. Reset Method When Error Occurs During Heating Operation
Wait for 4 minutes or more after the power is on, and then press the operation button on the remote control unit.
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12-8. Failure Display on Outdoor Unit and Correction Method
No.
Caused by (outdoor unit)
LED lamps
Error Detected
Points to Diagnose
Correction Methods
Meaning
Normal operation
2
3
4
5
—
—
Normal
● ● ● ●
● ● ● ●
—
—
—
Defect in IC chip (E2PROM)
Defective Gas Valves
Defective Thermistor 1
Defective Thermistor 2
Limit switch
Can not read IC chip data or miss-
ing IC chip on outside PCB
Gas switching IC (EEP-ROM) data was not
read properly by microcomputer upon
power-on
● Confirm proper insertion of gas switching
IC, then reset power supply
➀ Replace gas switching IC chip
➁Replace outdoor unit PCB
Detect abnormality in Gas Valve
Circuit at initial checking
Electricity applied to GV1 / GV2 while gas
valve is closed
● Measure voltage of GV1 (WHT – WHT of I)
and GV2 (ORG – ORG of I) (normal value:
DC0V)
➀ Replace outdoor unit PCB
—
A
● ● ● ●
● ● ● ●
● ● ● ●
● ● ● ●
● ● ● ●
● ● ● ●
Open or Short of Thermistor 1
Open or Short of Thermistor 2
Open / short circuit of Thermistor 1
Open / short circuit of Thermistor 2
● Measure resistance of Thermistor 1 (BLK –
BLK of M.) (normal value: 6.6±0.5 kΩ at
68°F (20°C))
➀ Check / modify Connector CN 15 (M)
➁Replace Thermistor 1
➂Replace outdoor unit PCB
➀ Check / modify connector CN 16 (K)
➁Replace Thermistor 2
➂Replace outdoor unit PCB
➀ Check / modify connector CN12 (P)
➁Replace thermal fuse
➂Replace bimetal thermistor
➀ Replace flame sensor probe (CN17)
➁Replace outdoor unit PCB
● Measure resistance of Thermistor 2 (BLK –
BLK of K.) (normal value: 6.6±0.5 kΩ at
68°F (20°C))
B
Thermal fuse or Bimetal Thermostat Temperature fuse / temperature limiting
● Check continuity of temperature fuse and
temperature limiting switch (YEL – YEL of
P) (normal value: 1Ω or less)
● Measure electric current between BLK of
flame rod and CN17(J) on the PCB (nor-
mal value: 0 µA, combination gas valve
closed)
C
D
E
tripped
switch operated
Abnormality in Flame Current
Circuit
Flame current detected while combination
gas valve is closed
Flame Current Circuit
Lighting failure
Could not establish flame
Fail to ignite by ignition operation (including
retry)
➀ Check / modify connector CN17 (J)
➁Check / modify connector CN7 (G)
➂Replace ignition electrode
● Measure electric current between BLK of
flame rod and CN17(J) on the PCB (nor-
mal value: 3 µA or more at ignition)
● Check positioning of ignition plug, flame
rod and burner (normal: electric discharge
gap approx. 4mm)
➃Check / modify insertion of wire on secondary
side of ignition transformer
➄Replace flame rod
➅Replace ignition transformer
● Confirm sparking noise at the igniter
➆Replace outdoor unit PCB or power transformer
Flame Sensor Circuit detects lost
flame and could not establish the
flame
Extinction after flame detection, and does
not re-try (burning after re-try, yet extin-
guishes within 4 minutes)
As above
F
Lost flame
● ● ● ●
● ● ● ●
As above
Incorrect combustion motor speed
Inadequate revolution speed
➀ At ignition:
Does not reach 500rpm within 20 sec-
onds
Reaches 500rpm within 20 seconds yet
does not reach prescribed revolutions
(approx. 1,850rpm) within 60 seconds
➁Less than 500rpm (other than ignition)
➀ Check / modify connector CN5 (D)
➁Check / modify connector CN14 (N)
➂Replace combustion blower fan motor set
➃Replace outdoor unit PCB
G
Incorrect combustion motor speed
● Check revolution of combustion blower fan
● Measure voltage of combustion blower
motor (PLE – PLE of D) (normal value: AC
30 – 115 V)
Thermistor 1 or Thermistor 2 tem-
perature did not go down during set Thermistor 1 and/or Thermistor 2 do not
➀ Repair refrigerant tubes (connections, etc.)
(leaks)
➁Charge additional refrigerant (leaks)
➂Replace units
H
Over-time period in retry
● ● ● ●
● Check for refrigerant leaks (pressure in
wide tube while cooling operation: approx.
85.0 PSIG (6 kgf/cm2)
period
cool down to normal temperature within 10
minutes after being heated up to a speci-
fied temperature (gas is cut off when over-
heating)
Combustion stopped by Thermistor
1 or Thermistor 2 more than set
number
As above
I
Over number of times in retry
Bypass Valve (V2) not open
● ● ● ●
● ● ● ●
Fourth overheating is detected. Retry is
performed up to 3 times when Thermistor 1
and / or Thermistor 2 cool down to normal
temperature within 10 minutes
As above
Bypass Valve failure or drop-out of
Thermistor 2
➀ Confirm / modify position of Thermistor 2
➁Confirm / modify connector CN6 (F)
➂Replace ON/OFF valve 2 (coil)
➃Replace outdoor unit PCB
J
Thermistor 2 does not detect temperature
increase (approx. xx°F (2°C)) within 30 sec-
onds after ON/OFF valve (RV2) is ON
● Check position of Thermistor 2.
● Measure voltage at ON/OFF valve (RV2)
(BLK – BLK of F) (normal value: AC 104 –
126 V, ON)
➄Replace units
Reversing Valve failure, drop-out of
Thermistor 2, or shortage of refrig-
erant
➀ Repair refrigerant tubes (connections, etc.)
—
Reversing Valve not working
● ● ● ●
Thermistor 1 fails to detect temperature
increase (approx. xx°F (1°C)) within 30 sec-
onds after ON/OFF valve (V1) is open at
ignition operation
● Check for refrigerant leakage
● Check position of Thermistor 1
● Measure voltage at reversing valve (BLK –
BLK of B) (normal value: AC 104 – 126 V,
ON)
(leaks)
➁Charge additional refrigerant (leaks)
➂Check / modify position of Thermistor 1
➃Check / modify connector CN03 (B)
➄Replace reversing valve (coil)
➅Replace outdoor unit PCB
Note: Failure display remains even after power reset following repairs. The display is overridden upon operation of compressor when heating operation is carried out for a second time after the repair.
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13. SPECIAL PRECAUTIONS WHEN SERVICING THE UNIT
Important!
For your personal safety, be sure to read and understand the following
precautions before servicing.
Injuries can occur from burns or inhalation of toxic gas if servicing is per-
formed while refrigerant remains in the refrigeration circuit. This servicing
includes disassembling brazed tubing connections and removing any
refrigeration parts or components.
WARNING
● To avoid risk of injury when servicing the outdoor unit (for instance, when replacing the compressor or repair-
ing a refrigerant leak), follow the procedure below for the refrigerant circuits of the outdoor unit.
PROCEDURE
13-1. BLK/WHT Connector Attachment for Servicing
13-1-1. Confirm mains power is switched OFF, then, detach the connectors (BLK and WHT) for the electromag-
netic valves, SV1 and SV2, from the terminals CN4 and CN6 on the PCB.
13-1-2. Connect the special connector (field supply) and the connector (BLK and WHT). Following this, re-apply
power at 115V and open the electromagnetic valves, SV1 and SV2.
13-1-3. Provide a disconnect switch to the special connector.
13-1-4. Turn the disconnect switch ON to supply power (single-phase, 115V) to the special connector. This
makes it possible to force open 2 solenoid valves (SV1 and SV2) in the refrigeration circuit outdoor unit.
(Fig. 3)
Important!
The procedures given in “13-2” to “13-5” below must be carried out with the 2 solenoid valves SV1
and SV2 open.
● Condition at shipping and operation
● Condition at servicing
Power supply
AC115V
Connectors for servicing
Disconnect switch (Field supply)
Black
White
Special
connector
V2
Black
White
V1
V2
Outdoor PCB
V1
Outdoor PCB
Fig. 1
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13-2. Refrigerant Recovery
13-2-1. Open service valve to recover refrigerant into refrigerant
recovery unit.
Outdoor unit
CAUTION
Refrigerant released into the air contributes to
destruction of our planet’s ozone layer. You should
always use the refrigerant recovery unit to help
protect the environment.
13-3. Service on Outdoor Unit
13-3-1. After making sure that the refrigerant in the circuit has
been completely discharged, perform required servicing,
such as replacing the compressor or repairing refrigerant
leaks.
Manifold valve
Pressure
gauge
Lo
Hi
13-3-2. Before going on to the next step, leak test all joints where
welding has been done.
NOTE
Nitrogen gas is best when pressurizing the system for a
leak test. However, if it is necessary to instead test with
refrigerant gas, be sure to recover all gas into the refriger-
ant recovery unit after completing the leak test.
Vacuum pump
13-4. Evacuation Using Vacuum Pump
Fig. 2
13-4-1. Using a hex wrench, set the valve stems of the narrow
and wide tube service valves as indicated in the table
below.
Service Valve
Narrow
Valve Position
Position – a –
Wide
Narrow Tube Service
Valve (2-Way)
Wide Tube Service
Valve (3-way)
Action
NOTE
Refer to Service Valve
Construction shown in Fig. 3.
Fully OPEN
*
*
Position – a –
CLOSED
Position – b –
Hose
*
Fig. 3
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13-4-2. Connect the vacuum pump and a manifold valve as shown Fig. 1. Confirm that all connections are cor-
rectly made.
NOTE
In order to withstand negative suction pressure during evacuation, the manifold valve should be
equipped with a Hi/Lo compound gauge with a minimum scale reading of –76 cmHg.
13-4-3. Install (first by hand-tightening, then securely with a wrench) flare nuts and bonnets at service valves in
the refrigeration circuit where evacuation will take place. This process is highly important to completely
evacuate the system.
13-4-4. Check that the BLK/WHT connector is properly attached. (Fig. 1)
13-4-5. Turn the disconnect switch ON (if it has been OFF) to open the 2 solenoid valves (SV1 and SV2). (Fig. 2)
13-4-6. With both the “Lo” and “Hi” knobs of the manifold valve open, run the vacuum pump. The operation time
varies with the capacity of the pump. (Run the pump at least 30 minutes.) Evacuation is successful if
the vacuum gauge reading remains at –75 cmHg or more for at least 10 seconds after closing both the
“Lo” and “Hi” knobs of the manifold valve.
13-4-7. With the vacuum pump still running, turn both the narrow and wide service valves all the way in to close
the valves (position – b – in Fig. 3). Then stop the pump.
13-4-8. After removing the vacuum hoses from the service valves, replace the flare nuts and bonnets on the
valves. The refrigerant circuit is now ready for charging.
13-5. Refrigerant Charging
13-5-1. After evacuation is completed, charge the circuit with the proper amount of refrigerant.
NOTE
The proper amount of refrigerant is specified on the nameplate of the outdoor unit and in Section
“2-1. Unit Specifications” in the service manual.
13-5-2. Use a hose to connect the narrow tube service valve to the
Outdoor unit
liquid port of the charging cylinder. (Fig. 4)
Charging cylinder
13-5-3. Purge air from the hose. Do this by opening the charging
cylinder valve, then slightly loosening the connection to the
narrow tube service valve. Wait a few moments, then
retighten the connection.
13-5-4. With a hex wrench, open the service valve little by little to
Open
let liquid refrigerant enter the circuit. (Fig. 4)
NOTE
Write down the gradation levels on the charging cylinder
Fig. 4
before and after the charging. This allows you to calculate
the charging volume.
Gradation
level before
charging
Gradation
level after
charging
Charging
volume
=
–
67
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13-5-5. If it is not possible to completely charge the unit with the proper amount of refrigerant, you can do an
additional charging after installing the units. At that time, refrigerant should be recharged in the liquid
state a little at a time using the wide tube service port, and the air conditioner should be operating in
COOLING mode during the entire charging process.
NOTE
Charging the unit with a large amount of refrigerant at once may damage the compressor. Always
charge the unit at a constant charging rate of about 0.2 lb (100 g).
13-6. Reattaching BLK/WHT Connectors for Operation
13-6-1. Turn off the power source.
13-6-2. Connect the BLK/WHT connectors to each other as in the original state.
CAUTION
Remember to reattach the BLK/WHT connectors in their original position. Otherwise, the system
will not operate correctly and damage may occur.
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INSTRUCTION MANUAL
KGS 1411 + CG1411
APPENDIX
1
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For Your Safety Read Before Operation
WARNING:
If you do not follow these instructions exactly, a fire or
explosion may result causing property damage,
personal injury or loss of life.
A. This appliance is supplied natural gas for heat
Operating Instruction
source into outdoor section.
Read the following safety information before
operation and/or maintenance is performed.
1. STOP! Read the safety information above in this
manual.
B. This appliance dose not have a pilot light. It is
equipped with an ignition device which
automatically lights the burner.
2. Manual Shutoff valve shall be turned off when
heating is not operating.
Do not try to light the burner by hand.
3. Turn off the electric power supply when the
manual shutoff valve is turn on. Wait five
minutes, and then smell for gas, including near
the floor.
C. BEFORE OPERATING: Smell around the appliance
area for gas. Be sure to smell next to the floor
because some gas is heavier than air and will
settle on the floor.
If you smell gas, STOP! Follow ‘‘C’’ in the safety
information above on this manual.
If you don’t smell gas, go to the operating
instructions.
WHAT TO DO IF YOU SMELL GAS
•
Do not try to light any appliances.
•
Do not touch any electric switch; do not use
Installation Instruction
any phone in your building.
•
Immediately call your gas supplier from a
The installation must conform with local codes or, in
the absence of local code, with the National Fuel
Gas Code:
neighbor’s phone.
Follow the gas supplier’s instructions.
•
If you reach your gas supplier, call the fire
ANSI Z223.1/NFPA 54
department.
and National Electric Code:
ANSI/NFPA 70.
D. Use only your hand to push in or turn the gas
control knob. Never use tools. If the knob will not
push in or turn by hand, don’t try again call a
qualified service technician. Attempting to repair
the appliance may result in a fire or explosion.
E. Do not use this appliance if any part is
underwater. Immediately call a qualified service
technician to inspect the appliance and to replace
any part of the control system and any gas
control which has been underwater.
2
OI-202-02EG
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Contents
Page
For Your Safety Read Before Operation ............................................................. 2
Product Information.............................................................................................. 3
Alert Symbols........................................................................................................ 3
Features.................................................................................................................. 4
Installation Location.............................................................................................. 5
Electrical Requirements........................................................................................ 5
Safety Instructions ................................................................................................ 6
Names of Parts...................................................................................................... 7
Using the Remote Control Unit ......................................................................... 12
Operation with the Remote Control Unit.......................................................... 14
1. Automatic Operation ............................................................................ 14
2. Manual Operation ................................................................................. 16
3. Adjusting the Fan Speed...................................................................... 17
4. Fan Only................................................................................................. 18
5. Night Setback Mode ............................................................................ 18
Special Remarks ................................................................................................. 20
Using the 12-Hour ON and OFF Timer ............................................................. 21
Using the 1-Hour OFF Timer.............................................................................. 22
Adjusting the Airflow Direction ......................................................................... 23
Operation without the Remote Control Unit.................................................... 24
Care and Cleaning............................................................................................... 24
Troubleshooting................................................................................................... 27
Tips for Energy Saving ...................................................................................... 27
Operating Range ................................................................................................. 27
Product Information
If you have problems or questions concerning your Air Conditioner, you will
need the following information. Model and serial numbers are on the
nameplate on the bottom of the cabinet.
Model No.
Serial No.
Date of purchase
Dealer’s address
Phone number
Alert Symbols
The following symbols used in this manual, alert you to potentially
dangerous conditions to users, service personnel or the appliance:
This symbol refers to a hazard or unsafe
practice which can result in severe personal
injury or death.
This symbol refers to a hazard or unsafe
CAUTION
practice which can result in personal injury
or product or property damage.
OI-202-03EG
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Features
This air conditioner is equipped with cooling, drying and heating functions. This air conditioner is a
refrigerant heating type unit which uses combustion gas to heat the outdoor coil refrigerant during heating
operation. Details on these functions are provided below; refer to these descriptions when using the air
conditioner.
•
•
Microprocessor Controlled Operation
The interior compartment of the remote control
unit contains several features to facilitate
automatic operation, each logically displayed for
easy use.
Air Sweep Control
This function moves a flap up and down in the
air outlet, directing air in a sweeping motion
around the room and providing comfort in every
corner.
•
•
•
Simple One-touch Wireless Remote Control
The remote control unit has several features to
facilitate automatic operation.
Automatic Switching between Cooling and
Heating
This unit automatically selects cooling
operation, heating operation or drying operation
according to the difference between the room
temperature and the temperature setting when
operation starts.
12-Hour ON or OFF Timer
This timer can be set to automatically turn the
unit on or off at any time within a 12 hour
period.
•
•
•
Automatic Restart Function for Power Failure
Even when power failure occurs, preset pro-
grammed operation can be reactivated once
power resumes.
•
•
1-Hour OFF Timer
This timer can be set to automatically turn off
the unit at any time after one hour.
Anti-Mold Filter
This unit is equipped with an anti-mold filter
that inhibits the growth of mold and bacteria.
Night Setback
Pressing this button changes the setting of the
room temperature thermostat, allowing you to
set the temperature at whatever level that you
find comfortable.
Optional Air Clean Filter
An air filter that uses activated charcoal to
eliminate unpleasant odors and clean the air is
available (sold separately).
•
Automatic and 3-step Fan Speed
Auto/High/Medium/Low
4
OI-202-04EG
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Installation Location
•
We recommend that this air conditioner be installed properly by
qualified installation technicians in accordance with the Installation
Instructions provided with the unit.
•
The outdoor unit has been designed for outdoor use. It should never
be used inside. This could result in incomplete combustion and is
extremely dangerous.
Use only the gas types indicated on the name plate. This plate is
•
located on the right side of the outdoor unit and should be checked
before connecting the gas line.
Before installation, check that the voltage of the electric supply in
•
your home or office is the same as the voltage shown on the
nameplate.
•
Do not install this air conditioner where there are fumes or flammable
gases, or in an extremely humid space such as a greenhouse.
•
Do not install the air conditioner where excessively high heat-
generating objects are placed.
Avoid:
To protect the air conditioner from heavy corrosion, avoid installing the
outdoor unit where salty sea water can splash directly onto it or in
sulphurous air near a spa.
Electrical Requirements
1. All wiring must conform to the local electrical codes. Consult your
dealer or a qualified electrician for details.
2. Each unit must be properly grounded with a ground (or earth) wire or
through the supply wiring.
3. Wiring must be done by a qualified electrician.
OI-202-05EG
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Safety Instructions
•
Read this Instruction Manual carefully before using this air conditioner.
If you still have any difficulties or problems, consult your dealer for
help.
This air conditioner is designed to give you comfortable room
•
conditions. Use this only for its intended purpose as described in this
Instruction Manual.
•
Never use or store gasoline or other flammable vapor or liquid near
the air conditioner — it is very dangerous.
•
This air conditioner has no ventilator for intaking fresh air from
outdoors. You must open doors or windows frequently when you use
gas or oil heating appliances in the same room, which
consume a lot of oxygen from the air. Otherwise there is a risk of
suffocation in an extreme case.
CAUTION
•
Do not turn the air conditioner on and off from the power mains
switch. Use the ON/OFF operation button.
•
Do not stick anything into the air outlet of the outdoor unit. This is
dangerous because the fan is rotating at high speed.
•
Do not let children play with the air conditioner.
•
Do not cool or heat the room too much if babies or invalids are
present.
•
Use only AGA or CGA certified natural gas for this unit.
If L.G. gas is to be used, be sure to first consult with your installer or
local dealer.
•
If the designated gas is not used, proper combustion may not take
place. This could result in an accident and personal injury.
6
OI-202-06EG
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Names of Parts
Air intakes
INDOOR UNIT
Air outlet
Remote
control
unit
Drain hose
Refrigerant tubes
OUTDOOR UNIT
Combustion Lamp
Air outlet
This illustration is based on the external appearance of a standard model.
Consequently, the shape may differ from that of the air conditioner you
have selected.
NOTE
This air conditioner consists of an indoor unit and an outdoor unit.
You can control the air conditioner with the remote control unit.
Air Intakes
Air from the room is drawn into these sections and passes through
air filters which remove dust.
Air Outlet
Air is blown out of the air conditioner through the air outlet.
Remote Control Unit
The wireless remote control unit controls power on/off, operation
mode selection, temperature, fan speed, timer setting, and air
sweeping.
Refrigerant Tubes
The indoor and outdoor units are connected by copper tubes
through which refrigerant gas flows.
Drain Hose
Moisture in the room condenses and drains off through this hose.
Outdoor (Condensing) Unit
The outdoor unit contains the compressor, fan motor, heat
exchanger coil, gas combustion components (combustion burner,
fan, fan motor, heat exchanger) and other electrical components.
Combustion Lamp
The combustion lamp indicates the burner status. It turns on
during operation and flashes when something is wrong.
OI-202-07EG
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Unit Display and Operation Selector
Operation selector
ON
OFF
INDOOR UNIT
TEST
Remote control receiver
IMPORTANT
Avoid using radio equipment
such as mobile phones near
(within 1 m of) the indoor unit.
Some radio equipment may
cause the unit to malfunction.
OPERATION
TIMER
OPERATION lamp
TIMER lamp
If the trouble occurs, disconnect
power and restart the air
conditioner after a few minutes.
REMOTE CONTROL
receiver
This section picks up infrared signals from the remote control unit
(transmitter).
Operation selector
ON position
This position is for operating the air conditioner with the wireless
remote control unit.
Set the selector normally in this position.
OFF position
TEST position
Switch the selector to the OFF position if you are not going to use
the air conditioner for a few days or longer.
The OFF position does not disconnect the power. Use the main
power switch to turn off power completely.
This position is used only when servicing the air conditioner.
•
To operate in the TEST position, first select DRY, COOL, or HEAT
mode with the selector in the ON position, and then switch the
selector to the TEST position. However, the air conditioner will
not operate when set to the TEST position if it has been stopped
by setting to the OFF position.
During TEST mode, the OPERATION lamp and timer lamp flash,
and remote control operation does not work.
•
Do not set at the TEST position for normal operation.
CAUTION
OPERATION lamp
TIMER lamp
This lamp lights when the system is in the continuous DRY,
COOL, FAN and HEAT mode.
This lamp lights when the system is being controlled by the timer.
8
OI-202-08EG
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Remote Control Unit (Display)
Displayed when setting temperature
Displayed when transmitting data
SET TEMP.
Displayed when the comfortable
temperature and operating mode for the
customer is set automatically.
NORMAL
1
ON
HR.
Displayed when setting timer
OFF
H
Symbols
(1) Operation mode
(3) Temperature setting
60 – 88 °F
When set to 82 °F ...........
AUTO.......................................
HEAT........................................
MILD DRY................................
COOL .......................................
FAN..........................................
Current temperature
indication .........................
(4) Timer
12-hour ON Timer..................
12-hour OFF Timer.................
1-hour OFF Timer...................
(5) NIGHT SETBACK....................
ON
OFF
1HR.
(2) Fan speed
(6) Confirmation of
transmission ...........................
AUTO.......................................
HIGH ........................................
MEDIUM..................................
LOW.........................................
(7) Flap
AUTO.......................................
Angle indication .....................
Sweep indication....................
OI-202-09EG
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Remote Control Unit
Transmitter
SET TEMP.
NORMAL
1HR.
ON
OFF
Display
ON/OFF operation button
1 HR. TIMER button
H
(Cover closed)
ON
OFF
1HR.
TIMER
TEMP.
TEMP. setting buttons
MODE selector button
FAN SPEED selector button
FLAP button
MODE
FLAP FAN SPEED
ON OFF
TIMER ON button
NIGHT
TIMER OFF button
SET button
SETBACK
SET CANCEL
NIGHT SETBACK button
ACL button
ACL
BATTERIES
CANCEL button
Battery compartment
(Pull off the cover to expose the
batteries.)
The illustration above pictures the remote control unit after the cover has
been lowered and removed.
NOTE
Transmitter
When you press the buttons on the remote control unit, the
appears in the display and the setting changes are transmitted to the
receiver in the air conditioner.
mark
Display
Information on the operating status is displayed while the remote control
unit is switched on. If the unit is turned off, only the mode that was set
previously is still displayed.
NIGHT SETBACK button
For details, see ‘‘Night Setback Mode’’. When you press this button in the
DRY, COOL or HEAT mode, the
mark appears in the display, and the
remote control unit automatically adjusts the set temperature to save
energy.
TEMP. setting buttons
Press the
Press the
button to increase the temperature setting.
button to reduce the temperature setting.
ON/OFF operation
button
This button is for turning the air conditioner on and off.
TIMER ON button
TIMER OFF button
: The air conditioner starts at the set time.
: The air conditioner stops at the set time.
ON
OFF
10
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Remote Control Unit (continued)
MODE selector button
Green or red (AUTO)
Use this button to select the AUTO, DRY, COOL or FAN mode.
: When this setting is selected, the air conditioner calculates the
difference between the thermostat setting and the room
temperature and automatically switches to the ‘‘COOL’’ or
‘‘HEAT’’ mode as appropriate.
Red (HEAT)
Orange (DRY)
Green (COOL)
Green (FAN)
: The air conditioner makes the room warmer.
: The air conditioner reduces the humidity in the room.
: The air conditioner makes the room cooler.
: The air conditioner works only as a circulation fan.
FLAP button
Press this button either to select to set the airflow direction to one of
the six possible positions manually, or to select the sweep function,
which moves the flap up and down automatically.
: The airflow direction is set automatically.
: The airflow direction can be set manually. (six positions)
: The flap moves up and down automatically.
To switch to the sweep function ( ) when in the manual ( ) mode,
hold down the FLAP button.
NOTE
FAN SPEED selector
button
: The air conditioner automatically decides the fan speed.
: High fan speed
: Medium fan speed
: Low fan speed
1 HR. TIMER button
(1-hour off timer)
: When you press this button, regardless of whether the unit is
operating or stopped, the unit operates for one hour and then
shuts down.
1HR.
ACL button (All clear)
SET button
Puts the remote control unit into pre-operation status. Always press
this button after replacing the batteries.
After using the TIMER ON button or TIMER OFF button to set the timer,
press this button to activate the new setting.
CANCEL button
Press this button to cancel the current timer setting.
OI-202-11EG
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Using the Remote Control Unit
How to Install Batteries
1. Slide the cover in the direction indicated by
the arrow and remove it.
2. Install two AAA alkaline batteries. Make sure
the batteries point in the direction marked in
the battery compartment.
ACL button
3. Use a thin object such as the tip of a pen to
press the ACL button.
Cover
•
The batteries last about six months, depending on how much you use
the remote control unit. Replace the batteries when the remote control
unit’s display fails to light, or when the remote control cannot be used
to change the air conditioner’s settings.
Use two fresh leak-proof type-AAA alkaline batteries.
In replacing batteries, follow the instructions as mentioned in the
sub-section ‘‘How to Install Batteries’’.
NOTE
•
•
•
If you do not use the remote control unit more than 1 month, take out
the batteries.
How to Use the Remote
Control Unit
When using the remote control unit, always point the unit’s transmitter
head directly at the air conditioner’s receiver.
Air conditioner
(Indoor unit)
Receiver
(Transmitter head)
Remote control
unit
Remote Control Unit
Installation Position
The remote control unit may be operated either from a non-fixed position
or from a wall-mounted position. To ensure that the air conditioner operates
correctly, DO NOT install the remote control unit in the following places:
•
DO NOT
In direct sunlight
•
Behind a curtain or other places where it is covered
•
More than 26 feet (8 m) away from the air conditioner
•
In the path of the air conditioner’s airstream
•
Where it may become extremely hot or cold
•
Where it may be subject to electrical or magnetic noise
•
Where there is an obstacle between the remote control unit and air
conditioner (since a check signal is sent from the remote control unit
every 3 minutes)
12
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Using the Remote Control Unit (continued)
Mounting the Remote
Control Unit
Removable mounting
Non-removable mounting
Wall
Wall
(Packed with
the indoor unit)
(Packed with the
indoor unit)
Mounting on a wall
A. Removable mounting
1) Momentarily hold the remote control unit at the desired mounting
position.
2) Confirm that the air conditioner responds correctly when you press
keys on the remote control from that position.
3) After confirming correct operation, use a screwdriver to screw the
mounting screw into the wall.
4) Hang the remote control unit from the mounting screw.
B. Non-removable mounting
1) Momentarily hold the remote control unit at the desired mounting
position.
2) Confirm that the air conditioner responds correctly when you press
keys on the remote control from that position.
3) After confirming correct operation, use a screwdriver to screw the
mounting screw into the wall.
4) Remove the batteries of the remote control unit.
5) Use a screwdriver to screw the remote control unit securing screw
into the wall through the hole in the battery compartment.
6) Replace the batteries.
7) Again confirm that the remote control unit operates correctly.
OI-202-13EG
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Operation with the Remote
Control Unit
1. Automatic Operation
SET TEMP.
NORMAL
ON
OFF
1HR.
TIMER
TEMP.
STEP 2
FAN SPEED MODE
FLAP
ON
STEP 1
OFF
NIGHT
SETBACK
SET CANCEL
Check that the circuit breaker on the power panel is turned on and that the
operation selector of the indoor unit is in the ON position.
NOTE
Once the
mode is selected and the unit is preset by following the steps
below, you can have the air conditioner automatically bring the room to the
desired temperature simply by pressing the ON/OFF operation button.
STEP 1
STEP 2
Press the MODE selector to select
Press the ON/OFF operation button.
.
To stop the air conditioner, press the ON/OFF operation button again.
•
To change the temperature setting, press the temperature setting
NOTE
buttons and change the setting to the desired temperature.
•
The temperature setting changes by two degrees each time one of the
TEMP. buttons is pressed. The temperature setting may be changed
within a range of ±8 °F of the standard temperature. (The air conditioner
remembers the new temperature setting even when it is turned off.)
14
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Operation with the Remote Control Unit (continued)
Press TEMP. to change the temperature setting.
To raise the temperature
setting
TEMP.
To lower the temperature
setting
•
The type of operation and the temperature setting will differ depending
on the ambient temperature when operation starts, as follows:
Ambient temperature
when operation starts
Operation
type
Temperature
setting
Operation
lamp
88 °F or higher
84 °F – less than 88 °F
80 °F – less than 84 °F
72 °F – less than 80 °F
Less than 72 °F
82 °F
80 °F
78 °F
76 °F
76 °F
Cooling
Green
Dry
Orange
Red
Heating
•
•
The operation mode (cooling, heating, dry) does not change
automatically during operation.
Although the fan speed is set automatically, you can change the fan
speed by pressing the FAN SPEED selector button.
To stop the air conditioner, press the ON/OFF operation button again.
OI-202-15EG
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Operation with the Remote Control Unit (continued)
2. Manual Operation
SET TEMP.
ON
OFF
1HR.
TIMER
TEMP.
STEP 2
STEP 4
STEP 3
STEP 1
FLAP FAN SPEED MODE
ON OFF
SET CANCEL
STEP 5
NIGHT
SETBACK
Check that the circuit breaker on the power panel is turned on and that the
operation selector of the indoor unit is in the ON position.
NOTE
If the automatic operation settings of the unit do not meet your needs,
press the setting buttons as described below and change the settings as
desired.
STEP 1
Press the MODE selector button and select the desired
mode.
For heating operation
→
For dehumidifying operation →
For cooling operation
For circulating operation
→
→
STEP 2
STEP 3
To start the air conditioner, press the ON/OFF
operation button.
Press the TEMP. setting buttons to change the
temperature setting to the desired temperature.
Adjustable temperature range:
88 °F max.
60 °F min.
The temperature setting changes by one degree each
time the button is pressed. It is not possible to change
the temperature setting when the unit is operating in the
fan mode. (The air conditioner remembers the new
temperature setting even when it is turned off.)
NOTE
STEP 4
Press the FLAP button and set the airflow direction as
desired.
(Refer to ‘‘Adjusting the Airflow Direction’’ on
page 23.)
To stop the air conditioner, press the ON/OFF operation button again.
16
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Operation with the Remote Control Unit (continued)
•
Choose the best position in the room for the remote control unit, which
NOTE
also acts as the sensor for room comfort and transmits the operating
instructions. Once you’ve found this best position, always keep the
remote control unit there.
•
This appliance has a built-in 3-minute time delay circuit to ensure
reliable operation. When the operation button is pressed, the
compressor will start running within three minutes. In the event of
power failure, the unit will stop. When the power is restored, the unit
will restart automatically after three minutes.
3. Adjusting the
Fan Speed
A. Automatic
Simply set the FAN SPEED selector button to the
position.
A microcomputer in the air conditioner automatically controls the fan speed
when the mode is selected. When the air conditioner starts operating,
the difference between the room temperature and the set temperature is
detected by the microcomputer which then automatically switches the fan
speed to the most suitable level.
Cooling and DRY mode:
When difference between
room temperature and set FAN SPEED
temperature is
4 °F and over
High
Between 4 °F and 2 °F
Below 2 °F
Medium
Low
Heating mode:
When difference between
room temperature and set FAN SPEED
temperature is
2 °F and over
Below 2 °F
High
Medium
The above table assumes that the sensor on the remote control is being
used. Actual operation may differ slightly from the operation described in
the table.
NOTE
B. Manual
If you want to adjust fan speed manually during operation, just set the FAN
SPEED selector as desired. [
,
, or
]
OI-202-17EG
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Operation with the Remote Control Unit (continued)
ON
OFF
1HR.
TIMER
4. Fan Only
TEMP.
STEP 2
STEP 3
STEP 1
FAN SPEED MODE
FLAP
ON
OFF
NIGHT
SETBACK
SET CANCEL
ACL
BATTERIES
If you want to circulate air without any temperature control, follow these
steps:
STEP 1: Press the MODE selector button to switch to the fan mode
(
).
STEP 2: Press the ON/OFF operation button.
STEP 3: Press the FAN SPEED selector button to select the fan speed of
your choice (
,
,
or
).
If the fan speed is set to auto (
), the fan speed switches to low.
5. Night Setback Mode
SET TEMP.
NORMAL
ON
OFF
1HR.
TIMER
TEMP.
FLAP FAN SPEED MODE
ON OFF
NIGHT
SETBACK
SET CANCEL
ACL
BATTERIES
The Night Setback Mode is used for saving energy.
Press the NIGHT SETBACK button while the air conditioner is operating.
The
mark appears in the display.
To cancel the night setback function, press the NIGHT SETBACK button
again.
18
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Operation with the Remote Control Unit (continued)
A. In Cooling and DRY
Mode:
When the night setback mode is selected, the air conditioner
automatically raises the temperature setting 2 °F when 1 hour have
passed after the selection was made, and then another 2 °F after
another 1 hour have passed, regardless of the indoor temperature
when night setback was selected. This enables you to save energy
without sacrificing comfort. This function is convenient when gentle
cooling is needed.
(
and
)
Setting
temperature
2 °F
1 hour
NIGHT SETBACK
button
Press the
Time
B. In Heating Mode:
When the night setback mode is selected, the air conditioner
automatically lowers the temperature setting 6 °F when 1 hour have
passed after the selection was made, and then another 8 °F after
another 2 hours have passed, regardless of the indoor temperature
when night setback was selected. This enables you to save energy
without sacrificing comfort. This function is convenient when gentle
heating is needed.
(
)
Setting
temperature
6 °F
8 °F
Press the
NIGHT SETBACK
button
2 hours
Time
1 hour
OI-202-19EG
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Special Remarks
‘‘DRY’’ ( ) Operation
How it works?
•
Once the room temperature reaches the level that was set, the unit
repeats the cycle of turning on and off automatically.
•
During DRY operation, the fan speed is automatically set to LOW or
VERY LOW; the fan speed then switches back and forth between LOW
(for 20 seconds) and VERY LOW (for 10 seconds).
•
‘‘DRY’’ operation is not possible if the indoor temperature is 59 °F or
less.
Heating ( ) Operation
Heating performance
•
This air conditioner is a refrigerant heating type unit which uses
combustion gas to heat the refrigerant heater during heating operation.
The heating capacity is unaffected depending on the outdoor
temperature. However, if sufficient heat cannot be obtained with this air
conditioner, use another heating appliance in conjunction with it.
•
In the event of power failure, the unit will stop. When the power is
turned on again, the unit restarts within three minutes.
Power failure
during operation
Clicking Sound
•
Clicking sound is
heard from the air
conditioner
In heating or cooling operation, any plastic parts may expand or shrink
due to a sudden temperature change. In this event, a clicking sound
may occur. This is normal, and the sound will soon disappear.
•
The remote control unit sends the setting condition to the air
conditioner regularly at three minute intervals.
Remote Control Unit
20
OI-202-20EG
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Using the 12-Hour ON and OFF
Timer
After the length of time set for TIMER ON elapses, the unit begins
operating.
1. TIMER ON mode
(Example)
The display depicted at left indicates that the air conditioner will begin
operating in three hours.
ON
Setting procedure:
H
STEP 1
Press the MODE selector button and select the desired
operation mode.
ON
OFF
1HR.
TIMER
TEMP.
(See ‘‘Operation with the Remote Control Unit,’’ page 14.)
STEP 2
Press the TIMER ON button.
(For example, to set the timer to turn on the air
conditioner after three hours have elapsed, press the
TIMER ON button three times.)
The time can be set to from one to twelve hours, in one
hour steps.
FLAP FAN SPEED MODE
ON OFF
NIGHT
SETBACK
SET CANCEL
ACL
BATTERIES
1
2
3.......12
STEP 3
Press the SET button.
•
•
The display changes immediately to its status previous to timer setting,
but the indication remains.
To check the status of the timer while it is counting down, press the SET
button.
ON
Cancellation procedure: Press the CANCEL button.
After the length of time set for TIMER OFF elapses, the unit stops
operating.
2. TIMER OFF mode
(Example)
The display depicted at left indicates that the air conditioner will stop
operating in five hours.
Setting procedure:
OFF
H
STEP 1
Press the TIMER OFF button.
ON
OFF
1HR.
TIMER
(For example, to set the timer to turn off the air
conditioner after five hours have elapsed, press the TIMER
OFF button five times.)
TEMP.
The time can be set to from one to twelve hours, in one
hour steps.
FLAP FAN SPEED MODE
ON OFF
1
2
3.......12
NIGHT
SETBACK
SET CANCEL
ACL
BATTERIES
STEP 2
Press the SET button.
•
•
The display changes immediately to its status previous to timer setting,
but the indication remains.
To check the status of the timer while it is counting down, press the SET
button.
OFF
Cancellation procedure: Press the CANCEL button.
OI-202-21EG
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Using the 1-Hour OFF Timer
1. 1-Hour OFF Timer
This function causes the unit to operate for one hour and then stop,
regardless of whether the unit is on or off when the button is pressed.
The
indicator in the display indicates that this function is operating.
1HR.
Setting procedure:
Regardless of whether the unit is operating or stopped, press the 1 HR.
TIMER button.
1HR.
appears in the display.
1HR.
ON
OFF
1HR.
TIMER
TEMP.
Cancellation procedure:
Press the ON/OFF operation button to turn the unit off, wait for the unit to
stop operating, and then press the ON/OFF operation button again. The
1-Hour Timer function is now cancelled and the unit operates normally.
FLAP FAN SPEED MODE
ON OFF
NIGHT
SETBACK
SET CANCEL
ACL
BATTERIES
•
If, while the 1-Hour Timer function is operating, the 1 HR. TIMER button
NOTE
is pressed once to cancel the function and then again, the unit continues
to operate for one hour from that point in time and then stops.
•
If the 1 HR. TIMER button is pressed while the TIMER OFF function is
operating, the OFF Timer is cancelled and the unit stops operating one
hour later.
2. Combining the 1-Hour
OFF Timer and 12-Hour
ON Timer
By combining the 1-Hour OFF Timer and 12-Hour ON Timer, it is possible to
have the unit operate for just one hour from the present time, and then
have it switch on again later at a time specified by you.
(Example) Having the unit operate for just one hour from the present time,
and then switch on again three hours from the present time.
1HR.
ON
Timer setting
ON
OFF
1HR.
TIMER
Operate
Stop
Operate
TEMP.
1 hour
2 hours
FLAP FAN SPEED MODE
ON OFF
3 hours
NIGHT
SETBACK
SET CANCEL
ACL
BATTERIES
Setting procedure:
STEP 1
STEP 2
Press the 1 HR. TIMER button.
Press the TIMER ON button and use the SET button to set
the unit to turn on three hours later.
•
Set the 1-Hour OFF Timer and the 12-Hour ON Timer simultaneously.
Unless you set the 1-Hour OFF Timer and the 12-Hour ON Timer at the
same time, the 1-Hour OFF Timer may operate for one hour or more.
NOTE
22
OI-202-22EG
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Adjusting the Airflow Direction
1. Horizontal
The horizontal airflow can be adjusted by moving the vertical vanes with
your hands to the left or right.
When the humidity is high, the vertical vanes should be in the front
position during the cooling or dehumidifying operation. If the vertical vanes
are positioned all of the way to the right or left, condensation may begin
to form around the air vent and drip down.
CAUTION
2. Vertical
The vertical airflow can be adjusted by moving the flap with the remote
control unit. Do not move the flap with your hands. Confirm that the remote
control unit has been turned on. Use the FLAP button to set either the
sweep function or one of the six airflow direction settings.
(The maximum capacity is obtained at the position at 4.)
ON
OFF
1HR.
TIMER
TEMP.
COO
an
DR
FLAP FAN SPEED MODE
ON OFF
NIGHT
SETBACK
SET CANCEL
ACL
BATTERIES
A. Sweep function
The flap starts moving up and down to
B. Setting the airflow manually
Referring to the above illustration, use
the FLAP button to set the airflow
direction within the range used during
the heating, cooling, or dehumidifying
operation.
deliver air over the sweep range.
•
The flap automatically closes when the unit is off.
NOTE
•
During the heating operation, the fan speed will be very low and the
flap will be in the horizontal position (position 6) until the air being
blown out of the unit begins to warm. Once the air warms up, the flap
position and fan speed change to the settings specified with the remote
control.
•
•
Use the FLAP button on the remote control to adjust the position of the
flap. If you move the flap by hand, the flap position according to the
remote control and the actual flap position may no longer match. If this
should happen, shut off the unit, wait for the flap to close, and then turn
on the unit again; the flap position will now be normal again.
CAUTION
Do not have the flap pointed down during cooling operation.
Condensation may begin to form around the air vent and drip down.
OI-202-23EG
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Operation without the Remote
Control Unit
INDOOR UNIT
If you have lost the remote control unit or it has trouble, follow the steps
below.
ON
OFF
1. When the air conditioner is not running
TEST
If you want to turn on the air conditioner, switch the operation selector to
the OFF position, and then to the ON position.
Operation
selector
The set temperature and fan speed are automatically set at the
last selection before stopping.
NOTE
2. When the air conditioner is running
If you want to turn off the air conditioner, switch the operation selector to
the OFF position.
Care and Cleaning
1. For safety, be sure to turn the air conditioner off and also to
disconnect the power before cleaning.
2. Do not pour water on the indoor unit to clean it. This will damage
the internal components and cause an electric shock hazard.
Casing and Grille
(Indoor Unit)
Clean the casing and grille of the indoor unit with a vacuum cleaner brush,
or wipe them with a clean, soft cloth.
If these parts are stained, use a clean cloth moistened with a mild liquid
detergent. When cleaning the grille, be careful not to force the vanes out of
place.
CAUTION
1. Never use solvents, or harsh chemicals when cleaning the indoor
unit. Do not wipe the plastic casing using very hot water.
2. Some metal edges and the fins are sharp and may cause injury if
handled improperly; be especially careful when you clean these
parts.
3. The internal coil and other components of the outdoor unit must
be cleaned every year. Consult your dealer or service center.
24
OI-202-24EG
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Care and Cleaning (continued)
Anti-mold filter
The anti-mold filter behind the air intake grille should be checked and
cleaned at least once every two weeks.
Air intake grille
How to remove the
anti-mold filter
1. Grasp both ends of the
air intake grille and pull
it out and up.
2. Push the anti-mold
filter up slightly, and
then pull
it down.
Anti-mold filter
Cleaning
Use a vacuum cleaner to remove light dust. If there is sticky dust on the
filter, wash the filter in lukewarm, soapy water, rinse it in clean water and
dry it.
How to replace the
anti-mold filter
1. With the ‘‘FRONT’’ mark facing
Air intake grille
you, slide the anti-mold filter
up into the unit and then lower
the handle into the groove on
the unit.
2. After installing the anti-mold
filter, press the locations
marked by the arrows (
)
and close the air intake grille.
Anti-mold
filter
Insert into the groove on the unit.
OI-202-25EG
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Care and Cleaning (continued)
Air cleaning filter
(not provided)
The air cleaning filter removes dust and dirt from the air, and reduces odors
and smoke from tobacco.
The air cleaning filter is not provided with the air conditioner and must be
purchased separately. The first time that you buy the air clean filter, it is
necessary to get the STK-ARF4B-50 model with frame. When changing the
filter subsequently, it is only necessary to replace the filter itself (model
STK-F4B-50).
NOTE
The air cleaning filter cannot remove harmful gases or vapors nor ventilate
air in the room. You must open doors or windows frequently when you use
gas or oil heating appliances. Otherwise there is a risk of suffocation in
extreme cases.
How to install the air
cleaning filter
The air cleaning filter needs to be
installed behind the anti-mold filter.
1. Remove the anti-mold filter.
2. Install the air cleaning filter in
the position shown in the
Air
clean
filter
diagram, with the
‘‘
’’ symbols (meaning
‘‘FRONT’’) facing the front.
3. Reinstall the anti-mold filter.
•
Cleaning the main unit and
remote control unit
Wipe clean using a soft, dry
cloth.
•
To remove stubborn dirt, moisten a cloth in warm water no hotter than
104 °F, wring thoroughly, and then wipe.
The air intake grille can be removed in order to wash it with water.
•
•
Removing and remounting
the air intake grille
With the air intake grille open
all the way, grip both arms
with your hands and pull
toward you to remove.
Air intake grille
Arm
To remount, hold the air
intake grille roughly
horizontal and push it in until
the arm shafts fit into the
indentations in the main unit,
then fit the grille into place.
When using a footstool or the like, be careful not to let it tip over.
CAUTION
•
Washing the grille with
water
Clean the grille gently using a soft sponge, or the like. Then wipe away
any remaining moisture.
•
Neutral detergent may be used to remove stubborn dirt. Then rinse
thoroughly with water and wipe away any remaining moisture.
26
OI-202-26EG
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Troubleshooting
If your air conditioner does not work properly, first check the following points before requesting service. If it
still does not work properly, contact your dealer or service center.
Trouble
Possible Cause
Remedy
Air conditioner does not run 1. Power failure.
1. Restore power.
2. Contact service center.
3. Consult your electrician or dealer.
4. Press the button again.
at all.
2. Leakage circuit breaker tripped.
3. Line voltage is too low.
4. Operation button is OFF.
5. Batteries in remote control unit have run 5. Replace batteries.
down.
OPERATION lamp flashes
and air conditioner does not
operate.
Trouble in wiring system.
Contact service center.
Compressor runs but soon
stops.
Obstruction in front of condenser coil.
Remove obstruction.
Poor cooling (or heating)
performance.
1. Dirty or clogged air filter.
2. Heat source or many people in room.
3. Doors and/or windows are open.
4. Obstacle near air intake or air discharge
port.
1. Clean air filter to improve airflow.
2. Eliminate heat source if possible.
3. Shut them to keep the heat (or cold) out.
4. Remove it to ensure good airflow.
5. Thermostat is set too high for cooling (or 5. Set the temperature lower (or higher).
too low for heating).
6. (Outdoor temperature is too low.)
6. (Consult your dealer or try to use a
back-up heater.)
Clicking sound is heard from In heating or cooling operation, any plastic This is normal, and the sound will soon
the air conditioner.
parts may expand or shrink due to a
sudden temperature change. In this event,
a clicking sound may occur.
disappear.
OPERATION lamp lights but
outdoor unit will not run.
1. The use of portable telephones near the
air conditioner may cause disturbance to
its normal operation.
1. Turn off the power then restart the air
conditioner after 1 minute.
2. Consult your dealer.
Tips for Energy Saving
•
Do not
Block the air intake and outlet of the unit. If they are obstructed, the
unit will not work well, and may be damaged.
•
Let direct sunlight into the room. Use sunshades, blinds or curtains. If
the walls and ceiling of the room are warmed by the sun, it will take
longer to cool the room.
•
Do
Always try to keep the air filter clean. (Refer to ‘‘Care and Cleaning’’.)
A clogged filter will impair the performance of the unit.
•
To prevent conditioned air from escaping, keep windows, doors and any
other openings closed.
Operating Range
The air conditioner is operable within the temperature ranges as listed below:
Temperature
Maximum
Minimum
Maximum
Minimum
Indoor Air Intake Temp.
95 °F DB/71 °F WB
67 °F DB/57 °F WB
80 °F DB/67 °F WB
— DB/— WB
Outdoor Air Intake Temp.
115 °F DB
COOLING
HEATING
67 °F DB
75 °F DB/65 °F WB
0 °F DB/−2 °F WB
OI-202-27EG
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For Parts or Service Contact
SANYO FISHER SERVICE CORPORATION
A DIVISION OF SANYO LOGISTICS CORPORATION
1411 West 190th Street, Suite 800, Gardena, CA 90248 U.S.A.
50 Beth Nealson Drive, Toronto, Ontario, M4H 1M6, CANADA
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