Order No. MAC0308013C2
Room A
CS-E18CKE CU-E
CS-E21CKE C
CONTEN
1 Fea
63
66
69
72
72
74
76
77
2
Removal Procedures
or Fan Motor Removal
78
80
81
84
c Controller Removal Procedure
©
2003 Matsushita Industrial Corp. Sdn. Bhd.
(11969-T). All rights reserved. Unauthorized copying
and distribution is a violation of law.
2 Functions
Remote Control
OFF/ON
I
Operation OFF / ON
MODE
Operation Mode Sele
•
•
•
•
•
a
HEAT
COOL
DRY
Automa
Heati
Co
FAN
POWERFUL
Q
cel
setting and
setting.
Point
akdown self diagnosis function.
Reset Point
• Clear memory data.
3
Indoor Unit
Automatic Operation Switch
Fiv
• Press for < 5s to run Automatic Operation.
(Used when the remote control cannot be used.)
• Press continuously for 5s and < 8s to run
Forced Cooling Operation.
• Press continuously for 8s and < 11s to
run Forced Heating Operation.
•
• Press continuously for 11s and < 16s t
change different remote controlling
setting (4 type of transmission co
• Press continuously for 16s or
switch OFF / ON Remote C
Receiving Sound or H14
Detection Mode.
Operation Ind
•
•
POWER (G
MONITOR
wer failure
trolled Room
ntrol
Outdoor Unit
Breakdown Self Diagnosis
Function
Low Pressure Control
(Gas Leakeage Detection
Indoor Power Rela
Anti-Dew Fo
Anti F
ion
5
3 Product Specifications
Unit
CS-E18CKE
CU-E18CKE
Cooling Capacity
kW
kcal/h
BTU/h
5.30 (0.90 - 6.00)
4,560 (770 - 5,160)
18,100 (3,070 - 20,500)
Heating Capacity
kW
kcal/h
BTU/h
6.60 (0.90 - 8.
5,680 (770 -
22,500 (3,07
Moisture Removal
Power Source
l/h
Pint/h
Phase
V
Cycle
Airflow Method
OUTLET
IN
Air Volume
Indoor Air (Lo)
Indoor Ai
No
0
50)
7.4
ng; 8.0
g; 3.21 (3.75 - 2.93)
oling; 11.0 (12.8 - 10.0)
Heating; 3.69 (3.21 - 3.02)
Heating; 12.6 (11.0 - 10.3)
8.0
; Half Union 1/2”
L ; Half Union 1/4”
G ; 3-way valve 1/2”
L ; 2-way valve 1/4”
Unit
CS-E18CKE
CU-E18CKE
Pipe Size
(Flare piping)
inch
inch
G (gas side) ; 1/2”
L (liquid side) ; 1/4”
G (gas side) ; 1/2
L (liquid side) ;
Drain
Hose
Inner diameter
Length
mm
m
12
0.65
—
Power Cord Length
Number of core-wire
2.1 m
3 core wires × 1.5 mm2
Dimensions
Height
Width
Depth
inch (mm)
inch (mm)
inch (mm)
lb (kg)
10 - 13/16 (275)
39 - 9/32 (998)
8 - 9/32 (210)
24 (11)
Net Weight
Compressor
Type
Type
Output
—
—
—
Motor
Rated
W
Air Circulation
Type
Material
Cross-flo
AS
Motor
Type
Tran
Rate Output
Lo (Cool/Heat)
Me (Cool/Heat)
Hi (Cool/Heat)
W
Fan Speed
rpm
rpm
rpm
Heat Exchanger
Description
Tube material
Fin material
Fin Type
Row / Stage
FPI
Size (W × H × L)
Refrigerant Control Device
Refrigeration Oil
Refrigerant (R410A)
Thermostat
Protection Device
Length
Flow Rate
Inner D
Mat
S
Capillary Tube
Air Filter
•
Specificatio
7
Unit
CS-E21CKE
CU-E21CKE
Cooling Capacity
Heating Capacity
kW
kcal/h
BTU/h
6.30 (0.90 - 7.10)
5,420 (770 - 6,110)
21,500 (3,070 - 24,200)
kW
kcal/h
BTU/h
7.20 (0.90 - 8.50)
6,190 (770 - 7,310)
24,600 (3,070 - 29,
Moisture Removal
Power Source
l/h
Pint/h
Phase
V
Cycle
Airflow Method
OUTLET
INTAKE
Air Volume
Indoor Air (Lo)
Indoor Air (Me)
Indo
Noise Lev
(3.75 - 2.80)
9.7 (12.8 - 9.5)
; 3.43 (3.21 - 3.09)
ing; 11.7 (11.0 - 10.5)
9.4
nion 1/2”
f Union 1/4”
G ; 3-way valve 1/2”
L ; 2-way valve 1/4”
gas side) ; 1/2”
(liquid side) ; 1/4”
G (gas side) ; 1/2”
L (liquid side) ; 1/4”
Unit
mm
m
CS-E21CKE
CU-E21CKE
Drain
Hose
Inner diameter
Length
12
0.65
—
—
Power Cord Length
Number of core-wire
2.1 m
—
3 core wires × 1.5 mm2
Dimensions
Height
Width
Depth
inch (mm)
inch (mm)
inch (mm)
lb (kg)
10 - 13/16 (275)
39 - 9/32 (998)
8 - 9/32 (210)
24 (11)
29 -
3
Net Weight
Compressor
Type
Type
Output
—
—
—
Motor
Rated
W
Air Circulation
Type
Material
Cross-flow Fa
ASHT-1
Motor
Type
Transistor
Rate Output
Lo (Cool/Heat)
Me (Cool/Heat)
Hi (Cool/Heat)
W
Fan Speed
rpm
rpm
rpm
1
Heat Exchanger
Description
Tube material
Fin material
Fin Type
Row / Stage
FPI
Size (W × H × L)
Refrigerant Control Device
Refrigeration Oil
Refrigerant (R410A)
Thermostat
Protection Device
Length
Flow Rate
Inner Diame
Material
Style
Capillary Tube
Air Filter
•
Specifications a
9
4 Dimensions
11
5 Refrigeration Cycle Diagram
6 Block Diagram
13
7 Wiring Diagram
8 Operation Details
8.1. BASIC FUNCTION
Inverter control, which equipped with a microcomputer in determining the most suitable operating mo
automatically adjusts output power for maximum comfort always. In order to achieve the suitable
microcomputer maintains the set temperature by measuring the temperature of the environment an
shifting. The compressor at outdoor unit is operating following the frequency instructed by the micr
judging the condition according to internal setting temperature and intake air temperature.
8.1.1.
Internal Setting Temperature
Once the operation starts, remote control setting temperature will be taken as ba
These shifting processes are depending on the air conditioner settings and th
will be used as internal setting temperature and it is updated continuously w
15
Table (b): Outdoor Air Temperature Shifting
Mode: Outdoor Temperature, X (°C):
Temperature Shift (°C)
Manual Operation
Auto Operation
2.00
Cooling/Soft Dry
38
X
1.50
1.25
1.25
1.75
-2.25
-1.75
-0.75
0.25
1.25
0.75
1.50
1.50
30
23
X
X
38
30
1.25
1.25
1.75
-1.5
-
X
21
23
X
Heating
17
13
9
X
X
X
21
17
13
5
1
X
X
9
5
-3
X
1
X
-3
Table (c): Powerful Mode Shifting
Mode:
Period, X (min):
Cooling
X
X
X
X
X
X
20
20
20
20
Soft Dry
Heating
Table (d): Quiet (Lo) Mode Shifting
Mode:
Cooling, Soft Dry
Table (e): Fan Speed Shifting
Cooling
So
Tabl
8.1.2.
Compressor Operation Frequency
Intake Air Temperature - Internal Setting Temperature (°C)
Freq. H
Soft Dry
Zone
1
Cooling & Soft Dry
Heating
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
-2.5
-3.0
-3.5
-4.0
Cooling
1
Heating
1
-2.0
-1.5
-1.0
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
Nil
1
1
8
8
8
11
11
2
3
4
5
6
7
1
1
14
20
27
35
43
46
46
46
Nil
Nil
1
8
9
10
11
12
Nil
Operating Frequency Calculation Formula:
CompHz = Freq. A × Freq. H + Freq. C
Example Calculation:
Model No.: E18CK
Operation Mode: Cooling
When Intake Air Temperature - Internal setting
1.5°C
CompHz
=
=
=
Freq. A × Freq. H + Freq. C
1.53 × 46 + 2.5
72 Hz (It cuts down less
Remarks:
When Freq. H is equa
freq. operation.
Best Amenity
Every 9
ature > Compressor OFF
17
8.1.4.
Soft Dry Operation
8.1.4.1. Thermostat control
• Compressor is OFF when Intake Air Temperature - Internal Setting Temperature < -2.5°C.
• Compressor is ON after waiting for 3 minutes, if the Intake Air Temperature - Internal Setting Temperature >
point.
8.1.5.
Heating Operation
8.1.5.1. Thermostat control
• Compressor is OFF when Intake Air Temperature - I
• Compressor is ON after waiting for 3 minutes, if t
point -0.5°C.
8.1.6.
This m
tem
ct
Values of T1, T2, and T3 depend on remote control setting temperature, as shown in below table. After the adjustment of T1, T2
and T3 values, the operation mode for that particular environment and remote control setting is judged and performed, bason
the above operation mode chart, every 30 minutes.
Remote Control Setting Temperature (°C)
T1
+10
+8
+7
+6
T2
+8
+7
+6
+5
T3
-5
16 ~ 18
19 ~ 22
23 ~ 26
27 ~ 30
There is a temperature shifting on T1, T2, and T3 if the operation mode judged is changed from Coolin
verse.
Operation Mode change from
Cooling/Soft Dry → Heating
Heating → Cooling/Soft Dry
Temperature
Example of operation mode chart adjustment:
From the above table, if remote control setting temperature = 25,
T1 = 25 + 7 = 32; T2 = 25 + 6 = 31; T3 = 25 - 7 = 18
The operation mode chart for this example is as shown in below fi
indoor intake air temperature and outdoor air temperature at the
8.1.7.
—
SSLo
630
o
760
800
630
0
1270
—
—
—
SSLo
300
Lo-
850
890
SLo
400
400
300
19
B. Indoor Fan Control
i. Indoor fan control operation outline
1. Cooling / Dry
2. Heating
ii. Auto Fan Speed
1. Cooling
2. Heating
21
iii. Max Capacity Condition
a) During Cooling operation, if all to the following condition is fulfilled, the indoor fan speed is set to Shi.
1. Indoor intake temperature 24°C.
2. Operation frequency 72 Hz (E18CK), 95 Hz (E21CK) & above.
3. Remote Control setting temperature 16°C.
4. Remote Control setting fan speed Hi.
5. Outdoor temperature 30°C.
6. Operation start within 30 minutes.
* If any of above conditions is not valid, the condition is ended.
b) During Heating operation, if all to the following condition is fulfilled, the indoor fan sp
1. Indoor intake temperature is 17°C or above and less than 23°C.
2. Operation frequency 86 Hz (E18CK), 93 Hz (E21CK) & above.
3. Remote Control setting temperature 30°C.
4. Remote Control setting fan speed Hi.
5. Outdoor temperature < 4°C.
6. Operation start 2 hours.
* If any of above conditions is not valid, the condition is ended
C. Fan Motor Control
i. Motor specification
High voltage PWM Motor
ii. Feedback Control
1. Rotation speed feedback
Immediately after the
iii. Abnormal Dete
1. Condition
2.
D. Deodorizing Control
i. Control condition
Control at cooling/dry operation and auto fan speed.
No Deodorizing Control is performed during ON timer standby operation and during Anti-freezing control preven
ii. Operation
The odor status is arranged as below and it is shifted as follow.
* When COMP is ON
(Shift to 4 when COMP is OFF)
* When COMP is OFF
(Shift to 1 when COMP is ON)
* Start from 4 if the Thermostat is OFF during the start operation.
1 → 2 → 3
4 → 5 → 4 ←→ 5
Odor Status
1
2
3
4
Status Shift
ON
according to COMP
Status Shift
according
to time (s)
Cooling
zone
Dry zone
Cooling
zone
Dry zone
40
50
—
OFF
OFF
Auto Fan
Fan Speed
SLo
8.1.8.
Outdoor
Outdoor fan
compress
23
Basic Rotation Speed
rtical vanes).
ger temperature
le (°)
3
17
4
5
58
7
7
7
17
17
17
33
7 ~ 37
25
7
25
49
33
33
67
41
41
1. Automatic vertical airflow direction can be set using remote control; the vane swings up and down within the angles as stated
above. For heating mode operation, the angle of the vane depends on the indoor heat exchanger temperature as Fi1
below. When the air conditioner is stopped using remote control, the vane will shift to close position.
2. Manual vertical airflow direction can be set using remote control; the angles of the vane are as stated
positions of the vane are as Figure 2 below. When the air conditioner is stopped using remote control, t
close position.
Horizontal Airflow
1. Automatic horizontal airflow direction can be set using
stated below. For heating mode operation, the angl
Figure 1 below.
Operation Mode
Heating, with heat exchanger
Cooling, Soft Dry and F
125
25
8.1.10. Quiet operation (Cooling Mode/Cooling area of Dry Mode)
A. Purpose
To provide quiet cooling operation compare to normal operation.
B. Control condition
a. Quiet operation start condition
• When “quiet” button at remote control is pressed.
Quiet LED illuminates.
b. Quiet operation stop condition
1. When one of the following conditions is satisfied, quiet operation stops:
a. Powerful button is pressed.
b. Stop by OFF/ON switch.
c. Timer “off” activates.
d. When change mode to fan only mode.
e. Quiet button is pressed again.
2. When quiet operation is stopped, operation is shifted to nor
3. When fan speed is changed, quiet operation is shifted to
4. When operation mode is changed, quiet operation is
5. During quiet operation, if timer “on” activates, qui
6. After off, when on back, quiet operation is not
D. Control contents
1. Fan speed is changed from normal
This is to reduce sound of Hi, M
2. Fan speed for quiet operati
8.1.10.1. Quiet
Automatic Fa
8.1.10.2. Quiet operation (Heating)
A. Purpose
To provide quiet heating operation compare to normal operation.
B. Control condition
a. Quiet operation start condition
• When “quiet” button at remote control is pressed.
Quiet LED illuminates.
b. Quiet operation stop condition
1. When one of the following conditions is satisfied, quiet operation stops:
a. Powerful button is pressed.
b. Stop by OFF/ON switch.
c. Timer “off” activates.
d. When change mode to fan only mode.
e. Quiet button is pressed again.
2. When quiet operation is stopped, operation is shifted to no
3. When fan speed is changed, quiet operation is shifted t
4. When operation mode is changed, quiet operation i
5. During quiet operation, if timer “on” activates, qu
6. After off, when on back, quiet operation is n
C. Control contents
a. Fan Speed manual
1. Fan speed is changed
This is to reduce so
2. Fan speed for q
3. Fan Speed
• If FM
-
27
8.1.11. Powerful Mode Operation
When the powerful mode is selected, the internal setting temperature will shift to achieve the setting temperature quickly.
(a) Cooling Operation
(b) Soft Dry Operation
(c) Heating Operation
8.1.12. Delay ON Timer
Delay ON timer can be se
provide a comfortable e
Seventy minutes
the indoor int
From
stop operate at set time.
8.1.14. Auto Restart Control
1. When the power supply is cut off during the operation of air conditioner, the compressor will re-operate within t
minutes (there are 10 patterns between 2 minutes 58 seconds and 3 minutes 52 seconds to be selected random
supply resumes.
2. This type of control is not applicable during ON/OFF Timer setting.
8.1.15. Indication Panel
LED
Color
POWER MONITOR
Green
POWER
Green
QUIET
Orange
Light ON
Light OFF
Compressor ON
Compressor OFF
Operation ON
Operation OFF
Quiet Mode ON
Quiet Mode O
Note:
• If POWER LED is blinking, the possible operatio
judgment, or delay ON timer sampling.
• If Timer LED is blinking, there is an abnorma
• If Ionizer, LED is blinking, there is an abn
Power Monitor LED Control Frequency
Lighting of 3 LED base on instruc
Position of LED
Cool, Dry
Instructed Hz
Heat
Instructe
8.1.16. A
.
ing Mode.
nal from remote control, the unit can be
detection selection mode or the remote control signal
29
8.1.17. Indoor Power Relay Control
Power relay will turn on during operation or in progress of stopping operation. Although operation stops, the power relay contin
on for three minutes.
However, during instantaneous power failure (< 0.5s), power relay will turn off. Then, it will turn on 2 minutes after pow
and the unit will operate as previous operation condition.
8.1.18. Ionizer Operation
Purpose
To provide fresh air effect to users by discharging minus ion to air.
Control Condition
a. Ionizer Only Operation.
1. When air-conditioner unit is at “OFF” c
Fan & ionizer on, ION LED illumina
However, fan speed can be adj
tton at remote control
3. Ionizer operation status is not memorised by micon. After OFF, when operation is “ON” again, air conditioner operates
without ionizer operation.
c. Timer during ionizer operation
Refer to case study in next page for detail.
8.1.18.1. Ionizer Problem Detection Control
i. Purpose
To inform user of ionizer problems and detection.
ii. Two types of problem detection control:
Control
Detection Method
Protec
ERROR
PROTECTION
(i) Actual ion: ON
(i) Actual ion ON for 10s & OFF for
30 min. continuously for 24 times
(approx. 11 hr. 30 min.)
(i) Actu
LE
(ii) ion feedback signal:
0V
(ii) Within 24 counts, if anytime
CONDITION becomes false the
count is cleared.
BREAKDOWN
PROTECTION
(i) Actual ion: OFF
(i) Actual ion OFF
(ii) ion feedback signal:
5V
8.
31
8.2. Protection Control Features
8.2.1.
Protection Control For All Operations
8.2.1.1. Time Delay Safety Control
1. The compressor will not start for three minutes after stop of operation.
2. This control is not applicable if the power supply is cut off and on again or after 4-way valve d
8.2.1.2. 30 Seconds Forced Operation
1. Once the compressor starts operation, it will not stop its operation for 30
2. However, it can be stopped using remote control or Auto Switch at in
8.2.1.3. Total Running Current Control
1. When the outdoor unit total running current (A
decreased.
2. If the running current does not excee
3. However, if total outdoor unit
Operat
Cooling/So
Cooling/
Heati
4. Th
8.2.1.4. IPM (Power transistor) Prevention Control
A. Overheating Prevention Control
1. When the IPM temperature rises to 110°C, compressor operation will stop immediately.
2. Compressor operation restarts after three minutes the temperature decreases to 95°C.
B. DC Peak Current Control
1. When electric current to IPM exceeds set value of 25.0 4.0 A, the compressor will stop o
after three minutes.
2. If the set value is exceeded again more than 30 seconds after the compress
minute.
3. If the set value is exceeded again within 30 seconds after the compr
If this condition repeats continuously for seven times, all indoor a
8.2.1.5. Compressor Overheating Preve
Instructed frequency for compressor operation will
below figure.
ill be cut off.
E21CK
/Soft Dry
Heating
93
102
1.5
20
1.5
25
33
8.2.1.7. CT Disconnection Detection
1. Control Starting Condition
a. Total Current is below 0.74 ~ 0.94 Amp.
b. Operating Frequency is 72 Hz (E18CK), 95 Hz (E21CK) +1 and above.
c. Continuously for 20s.
2. Control Contents
a. Abnormal signal transmitted to indoor unit after 3 minutes outdoor power is supplied. (Indoor unit
3. Control Cancellation Condition
Starting condition, (1) is not fulfilled.
8.2.1.8. Low Frequency Protection Control 1
When the compressor operate at frequency lower than 22 Hz for 240 minutes, the
for two minutes.
8.2.1.9. Low Frequency Protection Control 2
When all the below conditions occur, minimum value (Freq. MIN)
Temperature, T, for:
Indoor intake air (°C)
Outdoor air (°C)
Co
Indoor heat exchanger (°C)
8.2.1.10. Minimum Frequency
• During cooling operation (Anti Fre
1. During remote control s
2. Duri
35
ntrol will be cancel.
8.2.2.
Protection Control For Cooling & Soft Dry Operation
8.2.2.1. Outdoor Air Temperature Control
The compressor operating frequency is regulated in accordance to the outdoor air temperature as shown in the di
8.2.2.2. Cooling Overload Control
i. Pipe temperature limitation/restriction
• Detects the Outdoor pipe temperature a
• The compressor stop if outdoor pip
• If the compressor stops 4 times
35
8.2.2.3. Anti-Freezing Control
1. When indoor heat exchanger temperature is lower than 2°C continuo
2. Compressor will resume its operation three minutes after the indo
3. At the same time, indoor fan speed increase +40 rpm compa
4. If indoor heat exchanger temperature is higher than 10°C
8.2.2.4. Anti
a) Control 1
• Duri
th
eed setting is changed.
s controlled and air vane change
8.2.3.
Protection Control For Heating Operation
8.2.3.1. Anti Cold Draft Control
Indoor fan speed varies in accordance to indoor heat exchanger temperature, based on type of air volume and
below.
1. Manual Fan Speed
2. Auto F
37
Note:
a. UP:
• If move from Lo, the fan speed will be shifted to Maximum 1520 rpm (E21CK), 1480 rpm (E18CK).
• If move from Maximum, the fan speed no change.
• In up zone, 10 rpm is added for every 10s until Maximum 1520 rpm (E21CK), 1480 rpm (E18CK).
b. DOWN:
• The fan speed will be decreased one step every 10 sec. until Minimum 1270 rpm.
c. Current Output Fixed:
• Maintain at present fan speed.
d. Instantaneous Maximum:
• Fan speed will be increased to maximum auto fan speed.
e. Temperature in ( ) is for Powerful Mode operation.
8.2.3.2. Intake Air Temperature Control
Compressor will operate at maximum of 128 Hz respe
1. When the indoor intake air temperature is a
2. When the indoor intake air temperature
8.2.3.3. Outdoor Air
The compressor opera
control will begin o
8.2.3.4. Overload Protection Control
The compressor operating frequency is regulated in accordance to indoor heat exchanger temperature as shown in below
8.2.3.5. Outdoor Temperature Control
• Outdoor temperature is detected and the following control i
• Control operates after more than 1 minute the compres
39
8.2.3.6. Deice Control
A. Deice operation (Normal Deice Operation)
1. Detection methods
Outdoor heat exchanger temperature sensor, timer.
2. Deice operation time chart
Note
e
3. Explanation of operation
1) Before the deice is started, compressor frequency is set to the specified value for T0-timer.
2) After deice is started, the 4-way valve, OD Fan and ID fan are OFF.
3) After 4-way valve is OFF for 30 s, compressor frequency is set to the specified value.
4) Before deice is ended, if the outdoor heat exchanger temperature exceeds a°C, set compressor frequency a
specified values.
5) When outdoor heat exchanger temperature exceeds b°C, or 10.5 minutes has passed since the 4-wa
T5 will be started.
6) After the above 5) operation, if the specified time has passed, the deice operation ending si
to the specified value and at the same time outdoor fan motor ON signal is produced.
7) After T6 the deice ending signal is produced, 4-way valve is set to ON, indoor fan is
normal heating operation.
4. Deice operation judgement condition
When any of below a, b, c, d condition is satisfied, deice s
a. Continuously, outdoor heat exchanger temperature
-5°C for 3 minutes and outdoor air temperature
b. Continuously, outdoor heat exchanger te
6°C for 3 minutes and outdoor air tem
c. Continuously, outdoor heat exc
7°C and outdoor air temper
d. Continuously, outdoo
8°C for 3 minutes
However, the
(2nd deice
B. Aut
ion
with standby operation.
41
3. Deice condition:
OD air temp. t 0°C.
OD heat exchanger temp. 0°C for 14 min.
OD heat exchanger temp. -8°C for 10 min.
4. Auto clean deice tim
Similar to deice
a. Detection
Outd
b. D
Notes
1. During
oper
2. T
43
9 Operating Instructions
Ionizer
DO NOT TOUC
45
46
48
49
50
47
45
Select
ON
Timer
Set time
Confirm
or
OFF
Timer
Set
Current time OK? –> Setting: page 48
Soaps
Neutral household deter
pH7)
(
47
refer page 47
49
NEVER install, remove or reinstall yourself
51
10 Installation And Servicing Air Conditioner Using R410A
10.1. OUTLINE
10.1.1. About R410A Refrigerant
1. Converting air conditioners to R410A
Since it was declared in1974 that chlorofluorocarbons (CFC), hydro chlorofluorocarbons (HCFC) and other
destructive danger to the ozone layer in the earth´s upper stratosphere (20 to 40 km above the earth)
taken around the world to prevent this destruction.
The R22 refrigerant which has conventionally been used in ACs is an HCFC refrigerant and, ther
destroying potential. International regulations (the Montreal Protocol Ozone-Damaging Substa
various countries call for the early substitution of R22 by a refrigerant which will not harm t
• In ACs, the HFC refrigerant which has become the mainstream alternative called R4
of R410A is approximately 1.6 times as high at the same refrigerant temperatur
same. Consisting of hydrogen (H), fluorine (F) and carbon (C), R410A is an HF
is R407C. While the energy efficiency of R407C is some what inferior to th
pressure characteristics which are about the same as those of R22, and
2. The characteristics of HFC (R410A) refrigerants
a. Chemical characteristics
The chemical characteristics of R410A are similar to tho
refrigerants with low toxicity.
However, just like R22, the specific gravity of R410A
deficiency if it leaks into a closed room since it co
directly exposed to a flame, so it must be used
Tab
Composition (wt%)
Boiling point (°C)
Vaporizing pressure (25°C)
Saturated vapor density
Flammability
Ozone-destroying point
Global-warming poin
b. Compositi
R410A
thes
c
or
e refrigerant
be used for all
R22
0.14
0.40
0.81
1.43
2.33
2.60
d. R410A refrigerating machine oil
Conventionally, mineral oil or a synthetic oil such as alkylbenzene has been used for R22 refrigerating machine oil. Bese
of the poor compatibility between R410A and conventional oils like mineral oil, however, there is a tendenc
refrigerating machine oil to collect in the refrigerating cycle. For this reason, polyester and other synthetic oils
a high compatibility with R410A are used as refrigerating machine oil.
Because of the high hygroscopic property of synthetic oil, more care must be taken in its handling than w
conventional refrigerating machine oils. Also, these synthetic oils will degrade if mixed with mineral
causing clogging in capillary tubes or compressor malfunction. Do not mix them under any circums
10.1.2. Safety Measure When Installing / Receiving Refrigerant Pipi
Cause the gas pressure of R410A is approximately 1.6 times as high as that of R22, a mis
result in a major accident. It is essential that you use R410a tools and materials, and tha
to ensure safety.
1. Do not use any refrigerant other than R410A in ACs that have been used with
2. If any refrigerant gas leaks while you are working, ventilate the room. Toxic g
to a direct flame.
3. When installing or transferring an AC, do not allow any air or substan
it does, the pressure in the refrigeration cycle can become abnorm
4. After finishing the installation, check to make sure there is no
5. When installing or transferring an AC, follow the instruction
result in an abnormal refrigeration cycle or water leakag
6. Do not perform any alterations on the AC unit unde
repairs can result in an water leakage, electric sh
10.2. TOOL FOR INSTALLI
10.2.1. Necessary Tools
In order to prevent an R410A AC
port on the outdoor unit has be
changed for the refrigerant p
both the R410A and ordi
Flaring
Bend
lectrical drill, a hole
ltmeter, etc.
10A tools
for refrigerant charging
ylinder Charging orifice and
r refrigerant cylinder
nt dryer is wrapped in a vacuum pack. Replace
pened the vacuum pack, and begin the vacuuming
53
10.2.2. R410A Tools
1. Cooper tube gauge for clearance adjustment
(used when flaring with the conventional flaring tool (clutch
type))
• This gauge makes it easy to set the clearance for the
copper tube to 1.0-1.5 mm from the clamp bar of the
flaring tool.
Fig. 1 Copper tube gauge for cl
2. Flaring tool (clutch type)
• In the R410A flaring tool, the receiving hole for the
clamp bar is enlarged so the clearance from the clamp
bar can be set to 0-0.5 mm, and the spring inside the
tool is strengthened to increase the strength of the pipe-
expanding torque. This flaring tools can also be used
with R22 piping, so we recommend that you select it if
you are buying a new flaring tool.
3. Torque wrenches
Fo
4.
3
/cm3
ith another type of
A gauges
UNF 20 threads
5. Charging hose
• The pressure resistance of the charging hose has been
raised to match the higher pressure of R410A. The hose
material has also been changed to suit HFC use, and
the size of the fitting has been changed to match the
manifold ports.
Fig. 4
Table 8 Difference between R410A and conventional c
Conventional hos
3.4 MPa (35 kg
17.2 MPa (17
NBR
Pressure
resistance
Working pressure
Bursting pressure
Material
6. Vacuum pump adaptor
• When using a vacuum pump for R410A, it is necessa
to install an electromagnetic valve to prevent
vacuum pump oil from flowing back into the c
hose. The vacuum pump adaptor is install
purpose. if the vacuum pump oil (mineral
mixed with R410A, it will damage the u
7. Electric gas leak
• The leak
CFC a
ther
•
55
8. Electronic scale for refrigerant charging
• Because of the high pressure and fast vaporizing speed
of R410A, the refrigerant cannot be held in a liquid
phase inside the charging cylinder when charging is
done using the charging cylinder method, causing
bubbles to form in the measurement scale glass and
making it difficult to see the reading. (Naturally, the
conventional R22 charging cylinder cannot be used
because of the differences in the pressure resistance,
scale gradation, connecting port size, etc.)
• The electronic scale has been strengthened by using a
structure in which the weight detector for the refrigerant
cylinder is held by four supports. It is also equipped with
two connection ports, one for R22 *7/16 UNF, 20
threads) and one for R410A (1/2 UNF, 20 threads), so
it can also be used for conventional refrigerant charging.
Fig. 7 Electronic s
• There are two types of electronic scales, one for 10-kg
cylinders and one for 20-kg cylinders. (The 10-kg
cylinder is recommended.)
Refrigerant charging is done manually by opening and
closing the valve.
9. Refrigerant cylinders
• The R410A cylinders are labeled with the refrige
name, and the coating color of the cylinder prot
pink, which is the color stipulated by ARI of th
• Cylinder equipped with a siphon tube ar
allow the cylinder to stand upright for
charging.
10. Charging orifice
• The chargi
hose fitt
• The
m
G
OK
NG
OK
NG
NG
10.3. REFRIGERANT PIPING WORK
10.3.1. Piping Materials
It is recommended that you use copper and copper alloy jointless pipes with a maximum oil adherence of 40 mg/10
pipes that are crushed, deformed, or discolored (especially the inside surface). If these inferior pipes are used, i
the expansion valves or capillaries.
Because the pressure of ACs using R410A is higher than those using R22, it is essential that you s
appropriate for these standards.
The thickness of the copper tubing used for R410A is shown in Table 10. Please be aware that tubi
mm is also available on the market, but this should never be used.
Table 10 Difference between R410A and conventional copper tub
Soft pipe
Thi
Nominal diameter
Outside diameter (mm)
R410A
0.80
0.80
1/4
3/8
1/2
6.35
9.52
12.7
0.8
10.3.2. Processing and Connecting Piping Materia
When working with refrigerant piping, the following points must
be carefully observed: no moisture od dust must be allowed to
enter the piping, and there must be no refrigerant leaks.
1. Procedure and precautions for flaring work
a. Cut the pipe
Use a pipe cutter, and cut slowly so the pipe
deformed.
b. Remove burrs and clean shavings fro
If the shape of the pipe end is poor
or if shavings adhere to the flar
refrigerant leaks.
To prevent this, turn the
remove burrs, then clea
c. Insert the flare nut (
used on the AC
d. Flaring
Check the
pipe.
Be s
a
cture and flaring tool end
57
Table 11 R410A flaring dimensions
Wall thickness
Nominal
diameter
Outside
diameter
(mm)
A (mm)
Conventional flaring tool
Wing-nut type
(mm)
R410A flaring
tool, clutch type
Clutch type
1.0 - 1.5
1/4
3/8
1/2
6.35
9.52
12.70
0.8
0.8
0.8
0 - 0.5
0 - 0.5
0 - 0.5
1.5 - 2.0
1.5 - 2.0
2.0 - 2.5
1.0 - 1.5
1.0 - 1.5
Table 12 R410A flaring dimensions
Wall thickness
Nominal
diameter
Outside
diameter
(mm)
A (mm)
Conventional flarin
Wi
(mm)
R410A flaring
tool, clutch type
Clutch type
0.5 - 1.0
1/4
3/8
1/2
6.35
9.52
12.70
0.8
0.8
0.8
0 - 0.5
0 - 0.5
0 - 0.5
0.5 - 1.0
0.5 - 1.0
Table 13 R410A flaring and flare nut dimensions Unit: mm
Nominal
diameter
Outside
diameter (mm)
Wall thickness
(mm)
A +0, -0.4
B
C
dimension
dime
1/4
3/8
1/2
6.35
9.52
12.70
0.8
0.8
0.8
9.1
13.2
16.6
9.2
13.5
16.0
Table 14 R410A flaring and flare nut di
Nominal
diameter
Outside
diameter (mm)
Wall thickness
(mm)
A +0, -0.4
di
1/4
3/8
1/2
6.35
9.52
12.70
0.8
0.8
0.8
9.0
13.0
16.2
2. Procedure and precautions for flare connection
a. Check to make sure there are no scratches,
b. Align the flared surface with the axial cent
c. Use a torque wrench, and tighten to th
torque value for R22. Be careful, be
the flare nut or make it impossib
Nominal
diameter
1/4
3/8
1/2
10.3.3. St
1. Types
The
h the thickness shown
nsure that pipes are not
rior. When storing sheathed
. For flare nuts, be sure to used the same
b. Copper pipes
Use only copper pipes with the thickness given in table 10, and with minimal impurities. Because the surface of the is
exposed, you should take special care, and also take measures such as marking the pipes to make sure they a
distinguished from other piping materials, to prevent mistaken use.
3. Precautions during refrigerant piping work
Take the following precautions on-site when connecting pipes. (Keep in mind that the need to control the en
dust is even more important that in conventional piping).
a. Keep the open ends of all pipes sealed until connection with AC equipment is complete.
b. Take special care when doing piping work on rainy days. The entering of moisture will degrade
and lead to malfunctions in the equipment.
c. Complete all pipe connections in as short a time as possible. If the pipe must be left sta
the seal, it must be thoroughly purged with nitrogen, or dried with a vacuum pump.
10.4. INSTALLATION, TRANSFERRING, SERVICIN
10.4.1. Inspecting Gas Leaks with a Vacuum Pump fo
Refrigerant Piping)
1. From the viewpoint of protecting the global environment, please d
a. Connect the projecting side (pin-pushing side) of the charg
valve. (1)
b. Fully open the handle Lo of the manifold gauge an
instantly reaches vacuum, re-check step a).)
c. Continue the vacuum process for at least 15
MPa (-76 cmHg). Once the vacuum proce
vacuum pump operation, then remove t
that condition for 1-2 minutes, and m
d. Turn the valve stem of the 2-way
leak (4)
e. Remove the charging hose
the valve stem in the co
f. Tighten the service
caps with a torqu
g. After attachin
Precautions
• Be
Fig. 12 Vacuum pump air purging configuration
59
10.4.2. Transferring (Using New Refrigerant Piping)
1. Removing the unit
a. Collecting the refrigerant into the outdoor unit by pumping down
The refrigerant can be collected into the outdoor unit (pumping down) by pressing the TEST RUN button, even
temperature of the room is low.
• Check to make sure that the valve stems of the 2-way valve and 3-way valve have been opened by turni
clockwise. (Remove the valve stem caps and check to see that the valve stems are fully opened p
a hex wrench (with 4-mm opposing sides) to operate the valve stems.)
• Press the TEST RUN button on the indoor unit, and allow preliminary for 5-6 minutes. (TES
• After stopping the operation, let the unit sit for about 3 minutes, then close the 2-way valv
the clockwise direction.
• Press the TEST RUN button on the indoor unit again, and after 2-3 minutes of op
way valve quickly in the clockwise direction to close it, then stop the operation.
• Tighten the caps of the 2-way valve and 3-way valve to the stipulated torqu
• Remove the connection pipes (liquid side and gas side).
2. Installing the unit
Install the unit using new refrigerant piping. Follow the instructions in sec
and outdoor units, and the pipes of the indoor unit, and check for gas
10.4.3. AC Units Replacement (Using Existi
When replacing and R410A AC unit with another R410A
replacement AC unit uses the R410A, problems occur w
is different.
When replacing an R22 AC unit with an R410A
difficult to do because of the chemical charact
10.1.1.(2)). In this case, you should use new
1. Piping check
Because of the different pressur
different. the wall thickness of t
the thickness is correct, ther
of the piping also cannot
2. Pipe cleaning
A large quantity of
pipes are used
R410A, or irr
difficult wi
10.
ent
ate an
e chlorine
ollowing procedure.
valve and 3-way valve.
and continue the vacuum process for
en fully close the handle Lo, and turn off the
f the Low pressure gauge has not returned. See
5. Set the refrigerant cylinder onto the electronic scale, then correct the hose the cylinder and to the connection port for the
electronic scale. (1)(2)
Precaution:
Be sure to set up the cylinder for liquid charging. If you use a cylinder equipped with a siphon tube, you can cha
without having to turn the cylinder around
6. Remove the charging hose of the manifold gauge from the vacuum pump adaptor, and connect it to the co
electronic scale. (2)(3)
7. Open the valve of the refrigerant cylinder, then open the charging valve slightly and close it. Next, p
manifold gauge and purge the air. (2)(4) (Watch the liquid refrigerant closely at this point.)
8. After adjusting the electronic scale to zero, open the charging valve, then open the valve Lo o
with the liquid refrigerant. (2)(5) (Be sure to read the operating instructions for the electro
9. If you cannot charge the stipulated amount, operate the unit in the cooling mode whil
(about 150 g/time as a guideline). If the charging amount is insufficient from one ope
same procedure to do the liquid charging again.
Precaution:
Never use the gas side to allow a larger amount of liquid refrigerant t
10. Close the charging valve, and after charging the liquid refrigerant in
manifold gauge, and stop the operation of the unit. (2)(5)
11. Quickly remove the charging hose from the service port. (6) If
be discharged.
12. After putting on the caps for the service port and operat
61
10.4.6. Brazing
As brazing requires sophisticated techniques and experiences, it must be performed by a qualified person.
In order to prevent the oxide film from occurring in the pipe interior during brazing, it is effective to proceed with brazing while
dry nitrogen gas (N2) flow.
<Brazing Method for Preventing Oxidation>
1. Attach a reducing valve to the nitrogen gas cylinder.
2. Attach a reducing valve to the nitrogen gas cylinder.
3. Apply a seal onto the clearance between the piping and inserted pipe for the nitrogen gas in order to p
from flowing backward.
4. When the nitrogen gas is flowing, be sure to keep the piping end open.
5. Adjust the flow rate of nitrogen gas so that it is lower than 0.05 m3/h, or 0.02 MPa (0.2 kgf/cm
6. After taking the steps above, keep the nitrogen gas flowing until the piping cools down t
which pipes are touchable with finger).
7. Completely remove the flux after brazing.
Cautions during brazing
1. General Cautions
a. The brazing strength shoul
b. After operation, airtight
c. During brazing do n
d. The refrigerant
e. The brazed
f. No corro
2. Preventi
Due t
cir
eat,
means
market. However, the
ls, or adversely affect HFC
Replacing the refrigerant cycle parts first
azing immediately after opening the vacuum
o needs to be replaced when the refrigerant has
11 Installation Instructions
Required tools for Installation Works
1. Philips screw driver
2. Level gauge
5. Spanner
6. Pipe cutter
9. Gas leak detector
10. Measuring tape
13. Multimeter
14. Torque wrench
18 NGm (1.8 k
55 NGm (5.5
65 NGm (
3. Electric drill, hole core drill 7. Reamer
11. Thermometer
12. Megameter
15. Vacuu
(ø70 mm)
4. Hexagonal wrench (4 mm) 8. Knife
16. G
11.1. Safety Precautions
•
Read the following “SAFETY PRECAUTIONS” carefully before installation.
•
Electrical work must be installed by a licensed electrician. Be sure to use the corre
for the model to be installed.
•
The caution items stated here must be followed because these important co
indication used is as below. Incorrect installation due to ignoring of t
seriousness is classified by the following indications.
This indication shows the possibility of cau
This indication shows the pos
The items to be followed are classified by th
Symbol with b
•
Carry out test running to confir
maintenance as stated in in
1. Engage d
2. Install
3. Us
e
4.
e
no
ctly, it will
on
o enter the
on cycle, and
e may cause
injury. Use only
per pipes thinner than 0.8
d do not share the single outlet with
63
1. The equipment must be earthed. It may cause electrical shock if grounding is not perfect.
2. Do not install the unit at place where leakage of flammable gas may occur. In case gas leaks and accumulates at
surrounding of the unit, it may cause fire.
3. Carry out drainage piping as mentioned in installation instructions. If drainage is not perfect, water may enter the ro
furniture.
1. Selection of the installation location.
Select a installation location which is rigid and strong enough to support or hold the unit, and sel
2. Power supply connection to the room air conditioner.
Connect the power supply cord of the room air conditioner to the mains using one of the fo
Power supply point shall be the place where there is ease for access for the power disco
In some countries, permanent connection of this room air conditioner to the power sup
1. Power supply connection to the receptacle using a power plug.
Use an approved 16A power plug with earth pin for 2.0HP (E18CK, E21CK) f
2. Power supply connection to a circuit breaker for the permanent connectio
E21CK) for the permanent connection. It must be a double pole switch
3. Do not release refrigerant.
Do not release refrigerant during piping work for installation, reinstalla
liquid refrigerant, it may cause frostbite.
4. Installation work.
It may need two people to carry out the installation work.
5. Do not install this appliance in a laundry room or other loc
Attached accessories
Indoor/Outdoor Unit Installa
Applicable piping kit
CZ-4F5, 7, 10AN (E18CK, E21CK)
SELECT THE BEST LOCATION
INDOOR UNIT
• There should not be any heat sou
unit.
• There should not be any
circulation.
• A place where air cir
• A place where dr
• A place w
considerat
• Do not
• Ens
for explanation purposes only.
will actually face a different way.
65
11.2. INDOOR UNIT
11.2.1. SELECT THE BEST LOCATION
(Refer to “Select the best location”
section)
11.2.3. TO DRILL A HOLE IN THE WALL
AND INSTALL A SLEEVE OF
PIPING
1. Insert the piping sleeve to the hole.
11.2.2. HOW TO FIX INSTALLATION
PLATE
2. Fix the bushing to the sleeve.
3. Cut the sleeve until it extrudes
The mounting wall is strong and solid enough to prevent it from
the vibration.
Caution
When the wall is h
sleeve for tube
mice biting the
4. Finish by
compou
The centre of installation plate should be at more th
at right and left of the wall.
The distance from installation plate edge to c
than 67 mm.
From installation plate left edge to un
From installation plate right edge
: For left side piping, pipi
about 126 mm from t
: For left side piping
about 174 mm f
: For left side p
about 984
1. Mount
mor
(I
3. For the embedded piping
67
11.2.5. CONNECT THE CABLE TO THE INDOOR UNIT
1. The inside and outside connecting cable can be connected
without removing the front grille.
2. Connecting cable between indoor unit and outdoor unit
shall be approved polychloroprene sheathed 4 × 2.5 mm2
(E18CK, E21CK) flexible cord, type designation 245 IEC 57
or heavier cord.
• Ensure the color of wires of outdoor unit and the
terminal Nos. are the same to the indoor’s respectivel
• Earth lead wire shall be longer than the other lead
as shown in the figure for the electrical safety in
the slipping out of the cord from the anchor
• Secure the cable onto the control board
(clamper).
INSTALLATIO
a. Open the f
b. Remov
c. Put
(
the
unting
wards you to
t set the vertical
zontal position and
in the reverse order.
AUTO SWITCH OPERATION
The below operations will be performed by pressing the “AUTO” switch.
1. AUTO OPERATION MODE
The Auto operation will be activated immediately once the Auto Switch is pressed.
2. TEST RUN OPERATION (FOR PUMP DOWN/SERVICING PURPOSE)
The Test Run operation will be activated if the Auto Switch is pressed continuously for more than 5 sec. t
sound will occur at the fifth sec., in order to identify the starting of Test Run operation
3. HEATING TRIAL OPERATION
Press the AUTO Switch continuously for more than 8 sec. to below 11 sec. and release when
at eighth sec. (However, a “beep” sound is occurred at fifth sec.)
4. REMOTE CONTROL RECEIVING SOUND ON/OFF
The ON/OFF of Remote Control receiving sound can be changed over by followin
a. Press “AUTO” switch continuously for more than 16 sec. to below 21 sec.
at sixteenth sec.
b. Press the “Check” button once at Remote Control. A “beep” sound w
c. Press the “AUTO” switch once to select Remote Control receiving
ON, and a “beep” sound indicates receiving sound OFF.
11.3. OUTDOOR UNIT
11.3.1. SELECT THE
11.3.2. INSTAL
• After selecting
to Indoor/O
1. Fix the
by b
2. W
Piping size (Torque)
Gas
1/2” (55 N.m)
Liquid
1/4” (18 N.m)
cut edge. Make flare after inserting the flare nut
o the specified torque as stated in the table.
69
CUTTING AND FLARING THE PIPING
1. Please cut using pipe cutter and then remove the burrs.
2. Remove the burrs by using reamer. If burrs is not
removed, gas leakage may be caused.
Turn the piping end down to avoid the metal powder
entering the pipe.
3. Please make flare after inserting the flare nut onto the
copper pipes.
11.3.4. EVACUATION OF THE EQUIPMENT (FOR EUROPE & O
WHEN INSTALLING AN AIR CONDITIONER, BE SURE TO EVACUATE THE AI
following procedure.
1. Connect a charging hose
• Be sure to connec
2. Connect the cente
3. Turn on the po
-76 cmHg (-
4. Close th
move
N
xagonal
ke the following measure:
p 3.
are of the liquid refrigerant, it may cause
11.3.5. CONNECT THE CABLE TO THE OUTDOOR UNIT
1. Remove the control board cover from the unit by loosening the screw.
2. Connecting cable between indoor unit and outdoor unit shall be approved polychloroprene sheathed 4 × 2.5
E21CK) flexible cord, type designation 245 IEC 57 or heavier cord.
3. Secure the cable onto the control board with the holder (clamper).
4. Attach the control board cover back to the original position with the screw.
11.3.6. PIPE INSULATION
1. Please carry out insulation at pipe connection portion as mentioned in Indo
the insulated piping end to prevent water from going inside the piping.
2. If drain hose or connecting piping is in the room (where dew may form
with thickness 6 mm or above.
DISPOSAL OF OUTDOOR UNIT DRAIN WATER
• If a drain elbow is used, the unit should be placed
stand which is taller than 3 cm.
• If the unit is used in an area where temperatur
0°C for 2 or 3 days in succession, it is recom
use a drain elbow, for the drain water fre
will not rotate.
y?
one?
to the installation plate?
complied with rated value?
sound?
eration normal?
ostat operation normal?
remote control’s LCD operation normal?
Is the air purifying filter installed?
71
12 Servicing Information
Caution:
• Pb free solder has a higher melting point than standard solder; Typically the melting point is 50 - 70°F (30 - 40°C) higher. Pleas
a high temperature soldering iron. In case of the soldering iron with temperature control, please set it to 700 20°F (370
• Pb free solder will tend to splash when heated too high (about 1100° F/600°C).
12.1. Troubleshooting
1.
Rated Frequency Operation
During troubleshooting and servicing, rated compressor operating frequency must b
specification and technical data. Below are the methods used to obtain rated compres
(a) Cooling
(i) Press the Auto button continuously for 5 seconds or less than 8 seconds, the air co
(“beep” will be heard at the 5th second.)
(ii) Short the service ter
conditioner starts operation at Heating rated
2.
Troubleshooting Air Conditioner
Refrigeration cycle system
In order to diagnose malfunctions, make sure that there are
no electrical problems before inspecting the refrigeration
cycle. Such problems include insufficient insulation,
problem with the power source, malfunction of
compressor and a fan.
a
The normal outlet air temperature and pressure of the
refrigeration cycle depends on various conditions, the
standard values for them are shown in the table to the right.
73
1. Relationship between the condition of the air conditioner and pressure and electric current
Cooling Mode
Heating Mode
Condition of the air
conditoner
Low Pressure
High Pressure
Electric current
during operation
Low Pressure
High Pressure
Electric cu
during o
Insufficient refrigerant
(gas leakage)
Clogged capillary tube
or Strainer
Short circuit in the
indoor unit
Heat radiation
deficiency of the
outdoor unit
Inefficient compression
•
Carry on the measurements of pressure, electric cu
12.2. Breakdown Self Diag
Once abnormality detected during o
three error codes (abnormality) w
breakdown diagnosis method:
•
•
•
Press “CHECK” button
displayed at remote
By pressing the
displayed.
If error co
and Po
If “
t
Error Codes Table
Diagnosis
display
Abnormality / Protection control
Abnormality
Judgement
Emergency
operation
Primary location to ve
H11
Indoor / outdoor abnormal
communication
> 1 min after starting Indoor fan operation
• Internal / external
operation
only
• Indoor / Outd
H14
H15
H16
Indoor intake air temperature sensor
abnormality
Outdoor compressor temperature sensor
abnormality
Outdoor Current Transformer open
circuit
Continue for 5 sec.
—
• Intake air t
(defectiv
Continue for 5 sec.
—
—
• Com
(de
•
—
H19
Indoor fan motor merchanism lock
—
—
H23
H26
Indoor heat exchanger temperature
sensor abnormality
Ion abnormality
Continue for 5 sec.
O
(Cooli
—
H27
H28
Outdoor air temperature sensor
abnormality
Outdoor heat exchanger temperature
sensor abnormality
Continue for 5 sec.
Continue for 5 s
H30
Discharge temperature sensor
abnormality
Continue
H33
H97
Indoor/Outdoor wrong connection
Outdoor Fan Motor lock abnormality
H98
H99
F11
Indoor high pressure protection
Indoor heat exchanger anti-fre
protection
Cooling / Heating cycle
abnormality
F90
F91
PFC control
Refrigeratio
F93
F95
F96
Outd
n
nsistor)
r
he Auto Switch until “beep” sound heard
ion is possible for certain errors (refer to Error
er, the Remote Control signal receiving sound is
75
12.3. Remote Control
• Remote Control Reset
When the batteries are inserted for the first time, or the
batteries are replaced, all the indications will blink and the
remote control might not work.
If this happen, remove the cover of the remote control and
push the reset point once to clear the memory data.
• Changing the wireless remote control
code
When there are more than one in
same room, it is possible to
receiving signal by modifyi
Control.
12.4. Indoor Electronic Controllers Removal Procedures
1. The Electronic Controller, a Signal Receiver and an
Indicator (Fig. 3) can be seen by the below steps:
• Open the Intake Grille and remove the screw at the front
of the Front Grille. (Fig. 1).
• Remove the 3 caps and 3 screws at the bottom of the
Front Grille. (Fig. 1)
• Remove the Front Grille by releasing the 3 hooks at the
top of the Front Grille. (Fig. 1)
• Unhook the tabs at the Control Board to remove the
Control Board Cover. (Fig. 2)
2. To remove the Main Electron
• Release the 2 Particul
• Release the CN-R
• Release the C
• Release th
• Release
• Rele
•
Fig. 4
77
12.5. Cross Flow Fan and Indoor Fan Motor Removal Procedures
1. In order to remove the Cross Flow Fan and Indoor Fan
Motor, Control Board need to be taken out by releasing all
the connectors as indicated below.
a. Release the Earth Wire screw. (Fig. 5)
b. Release the Intake Air Sensor. (Fig. 5)
c. Release the Piping Sensor. (Fig. 5)
d. Release the CN-REC connectors. (Fig. 5)
e. Release the CN-STM1. (Fig. 5)
f. Release the CN-STM2. (Fig. 5)
g. Release connectors generator Ionizer. (Fig. 5)
2. Pull out the Drain Hose from outlet to remove the Discharge
Grille. (Fig. 6)
3. Removing the right and left screws.
4. By pressing down the hook a
hook at the right, you will
Board. (Fig. 7)
Fig. 8
6. Remove the Bearing. (Fig. 9)
7. Remove the screws at the left of the Evaporator. (Fig. 9)
8. Push up the Evaporator and pull out the Cross Flow Fan
from shaft. By then, Fan Motor can be taken out. (Fig. 10).
REMINDER - To reinstall the Fan Motor, put it ba
place, adjust the position of the Fan Motor’s l
appropriately as shown in the Fig. 8 before in
Cross Flow Fan.
79
12.6. Outdoor Electronic Controller Removal Procedure
1. Remove the top panel and front panel
• Be save to return the wiring to its original positio
• There are many high voltage components w
sink cover so never touch the interior duri
Wait at least two minutes after power h
Fig. 16
2. Remove the Outdoor Electronic Controller
13 Technical Data
81
Outdoor Temp. (°C)
Indoor wet
bulb temp.
30
SHC
3.99
35
SHC
3.82
40
SHC
3.67
4
TC
5.26
IP
1.51
TC
IP
TC
4.57
IP
1.74
TC
4.16
17.0°C
19.0°C
19.5°C
22.0°C
4.91
5.30
5.40
5.88
1.63
1.65
1.66
1.69
5.77
6.29
4.17
4.33
1.54
1.57
4.01
4.16
5.02
5.47
3.86
4.01
1.77
1.80
Outdoor Temp.
Indoor wet
bulb temp.
30
SHC
4.74
35
SHC
4.54
TC
6.25
IP
2.02
TC
IP
17.0°C
19.0°C
19.5°C
22.0°C
5.84
6.30
6.41
6.99
2.1
6.86
7.48
4.96
5.14
2.06
2.10
4.77
4.9
TC - Total Cooling Capacity (kW)
SHC - Sensible Heat Capacity (kW)
IP - Input Power (kW)
83
14 Exploded View
nt.
15 Replacement Parts List
<Model: CS-E18CKE & CS-E21CKE>
REF. NO.
1
PART NAME & DESCRIPTION
CHASSY COMPLETE
QTY.
1
1
1
1
1
1
1
1
1
1
15
2
1
1
1
1
1
1
1
1
1
CS-E18CKE
CWD50C1293
CS-E21CKE
←
←
2
FAN MOTOR
CWA981056
CWH02C1010
CWH4580304
CWH64K007
CWB30C1387
CWT25086 (7/16”)
CWT25096 (3/4”)
CWH32142
3
CROSS FLOW FAN COMPLETE
SCREW - CROSS FLOW FAN
BEARING ASS’Y
4
5
6
EVAPORATOR
7
FLARE NUT
8
FLARE NUT
9
INTAKE AIR SENSOR HOLDER
DISCHARGE GRILLE COMPLETE
VERTICAL VANE
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
4
CWE20C2240
CWE241088
CWE261025
CWA98260
CONNECTING BAR
AIR SWING MOTOR
LEAD WIRE - AIR SWING MOTOR
AIR SWING MOTOR
CWA67C3849
CWA981041
CWA67C373
CWE241
CWH5
CW
LEAD WIRE - AIR SWING MOTOR
HORIZONTAL VANE
CAP - DRAIN TRAY
PARTICULAR PIECE
CONTROL BOARD
TERMINAL BOARD COMPLETE
POWER SUPPLY CORD
ELECTRONIC CONTROLLER - MAIN
ELECTRONIC CONTROLLER - POWER
P.C.B. RECEIVER
ELECTRONIC CONTROLLER - INDICATOR
INDICATOR HOLDER
SENSOR COMPLETE
CONTROL BOARD TOP COVER
CONTROL BOARD FRONT COVER
REMOTE CONTROL COMPLETE
FRONT GRILLE COMPLETE
INTAKE GRILLE
GRILLE DOOR
CONTROL PANEL
DECORATION BA
DECORATION
AIR FILTE
SCREW
CAP
D
85
16 Exploded View
ent.
17 Replacement Parts List
<Model: CU-E18CKR & CU-E21CKR>
REF NO.
1
DESCRIPTION & NAME
QTY.
1
3
1
3
1
1
1
2
3
1
1
1
1
1
1
1
1
1
1
1
1
CU-E18CKR
CWD50K2085
CU-E21CKR
CHASSY ASSY
←
←
←
←
←
2
ANTI-VIBRATION BUSHING
COMPRESSOR
CWH50077
3
5CS130XAC03
CWH56000
4
NUT-COMPRESSOR MOUNT
SOUND PROOF MATERIAL
FAN MOTOR BRACKET
FAN MOTOR
5
CWG302111
CWD541054
CWA981110
CWH551060
CWH551109
CWH03K1016
CWH56053
6
7
8
SCREW - FAN MOTOR BRACKET
SCREW - FAN MOTOR MOUNT
PROPELLER FAN ASSY
NUT - PROPELLER FAN
CONDENSER
9
10
11
12
14
15
16
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
40
41
42
43
44
45
46
47
CWB32C1317R
CWT01C2900
CWB001027
CWB11094
TUBE ASS’Y COMPLETE (VALVE/RECEIVER)
4 WAYS VALVE
STRAINER
HOLDER - COUPLING
3 WAYS VALVE (GAS)
2 WAYS VALVE (LIQUID)
DRYER
CWH351035
CWB0111
CWB0
CW
SOUND PROOF BOARD
TERMINAL COVER
NUT-TERMINAL COVER
SENSOR COMPLETE (COMP. TOP)
HOLDER SENSOR
V-COIL COMPLETE (4-WAYS VALVE)
V-COIL COMPLETE (EXPAND VALVE)
SENSOR COMPLETE (COMP. DISC.)
SENSOR COMPLETE
REACTOR
CONTROL BOARD (SIDE)
TERMINAL BOARD ASSY
FUSE HOLDERS
FUSE
CONTROL BOARD (TOP)
CONTROL BOARD (BOT
ELECTRONIC CONTR
CONTROL BOARD
CABINET SID
HANDLE
CABINE
HAND
CA
87
18 Electronic Circuit Diagram
• CS-E18CKE CS-E21CKE
SCHEMATIC DIAGRAM 1/3
TO OUTDOOR
1
2
3
1
2
3
ELECTRONIC CONTROL UNIT
1
2
3
4
5
6
7
8
9 10
CN-MAI
PH1
(W
WHT AC5
WHT AC3
TEMPERATURE
FUSE
C29
FG1
FG2
(YLW/GRN)
(YLW/GRN)
C31
C30
AC4
AC6
(BLK)
(RED)
P
L
(BRW)
(BLK)
AC2
AC1
CN-HA
4
3
2
DISPLAY
D401
D402
D403
D404
D405
ION1 (GRN)
ION2 (GRN)
POWER MONITOR
HIGH (GRN)
2(GRN)
LOW (GRN)
AUTO SW
SW401
D
POWERFUL (ORG)
TIMER (ORG)
QUIET (OR
POWER
SCHEMATIC DIAGRAM 2/3
R14 510Ω
C4
1000p
(MB)
R12 1kΩ
R13
20kΩ
R4
20kΩ
R5
20kΩ
R7
20kΩ
5
12
6
11
IC2
R8 5.1kΩ
C2
0.022µ
R3
100Ω
(2125)
R6
100Ω
(2125)
IC2
C1
0.1µ
[KB]
64
63
62
61
60
59
58
1
2
P50
P51
3
P52
P53
4
QUIE
5
P54
6
P55
P56
7
AIR TEMP. SENSOR
(15k 3950)
1
2
3
4
PIPE TEMP. SENSOR
(20k 3950)
89
SCHEMATIC DIAGRAM 3/3
ELECTRONIC CONTROL UNIT (CONVERTER UNIT)
F001
CN001
C003
C004
L001
11
10
9
Z001
C002
C005
DB004
8
7
6
5
Z002
R056
4
3
2
TH002
TH001
1
D007
R030 R046
CN002
1
2
3
4
5
6
7
L002
R003
PC001
R114
1
4
R002
R004
3
1
2
4
R116
ZD005
PC002
R001
R005
3
2
R007 R
c
R115
R117
b
Q102
e
CN103
1
2
3
4
5
6
7
1
2
3
4
5
CN101
CN2
HV
R101
D102
C101
D5
R102
-4.2kV
C9
C6
R10
R12
C7
CN3
GND
CU-E18CKE CU-E21CKE
SCHEMATIC DIAGRAM 1/5
REACTOR
FG1
GRN
GRY2
GRY1
DC-1
DC-2
LJP111
BROWN
LJP105
R151
BLUE
JUMPER
R177
100k
C103
R150
C104
850
+
+
+
850
+
+
400V
400V
C102
65
R170
100k
C101
R149
PTC2
PTC1
350V
ZNR107
ZNR108
R148
R147
LJP110
R171
100k
C105
YELLOW
R146
R145
R144
LJP103
YELLOW
TERMINAL
DB101
AC-BLK
LJP104
BLUE
1
2
1
2
3
C1
4700pF
250V
RY-PWR
RY-C
K6B1AGA00082
LF101
3
R141
ZNR102
C2
C4
C7
4700pF
250V
ERZVEAV511
1.0
250V
R140
DB102
C3
C6
CT101
1.0
1.0
ETQ19Z59BZ
250V
250V
D1
D3
D2
R143
ZNR103
ERZVEAV511
C5
R125
D4
1.65k 1%
R142
D13
AC-WHT
R124
698
1%
C71
22
R160
R161
R162
9.1k
1/4W
R163
9.1k
1/4W
9.1k
9.1k
D5
ERA15-
1/4W
1/4W
R164
9.1k
1/4W
R165
R166
R167
ZD6 ZD
D6
DATA
RED
ERA15-06
R152 R3 1.21k
R17
2W 13k
2
1%
R198
1M
1/4W
1%
1
C12
2200pF
250V
PC18
3
TLP421
(BL)
91
SCHEMATIC DIAGRAM 2/5
TANK TEMP. SENSOR
(50k
3950)
CN-TANK
1
2
3
LJP112
BROWN
FUSE
3.15A
250V
LJP109
BLACK
LJP113
BLACK
R2
R28
499k
1/4W
499k
1/4W
1
1
%
%
1
1
%
%
R1
499k
1/4W
R8
499k
1/4W
R139
8.25k
1%
R134
7.68k
1
%
43
C15
100
6.
7
5V
C209
C223
0.047
25V
+
10
50V
CN202
2
1
SCHEMATIC DIAGRAM 3/5
IC4
6
7
5
11
10
12
RY-2
RY-1
24 23
13
3
4
4
5
6
12
36
7
7
43401 3
3
5
6
13
4
3
12
R212 R213 R214
10k 10k 10k
R21
1
R211 10k
R210 10k
C227
0.56
6.3V
100 99 98 97 96 95 94 93 92 91
P56
P57
1
2
3
4
5
6
7
8
9
VDD(3.3V)
AVSS(GND)
RY-2 D
P
ADIN08
ADIN01
ADIN10
AVDD(3.
ADIN
10
28
3LU
Vo
G
C214
100
6.3V
(FC)
25
100
16V
+
C213
0.01
C231
1k
20
CN201 20
CN201 19
R241 1k
R240 1k
19
36
CN203
ECU1
4
93
SCHEMATIC DIAGRAM 4/5
4 WAYS
VALVE
FM
CN-FW1
(XH7-5)
CN-HOT
(VH3-2)
1
2
3
4
5
6
7
1
2
3
10k x 6
680 x 6
R31
150 x 6
R37
R38
R39
R40
R41
R42
14
6
5
3
R32
R33
R34
R35
R36
4
2
1
13
11
D20
ERA15-06
C75
0.047
25V
TC74H
1
C65
0.22
630V
C74
0.047
25V
R199
160
5W
5%
R102
10k
PTC3
ZPC56CH251A1UC
D23
ERA1
RY-1
ALA2ZF12E01
R76
R75
10k
Q8
DTA143XK
Q10
R73
5.11k
1
SCHEMATIC DIAGRAM 5/5
T101 ETXMJ326X1C
D7
NJM78M15F
IC1
d
1
ERA2204-04
+
+
C24
100
25
C21
C22
0.01
C23
0.01
R21
470
25V
(FC)
e
f
C29
D8 ERB83-006
0.22
2
3
630V
(MF)
C25
470
25V
+
R24
10
1W
R19
10
1W
R23
4
5
D9
ERA22-04
b
6
c
a
AUO1A x 3
D12
C30
47
25V
(FC)
C31
R30
47
+
C32
0.047
25V
+
33
25V
2W
(FC)
ZD7
D11
C33
47
25V
(F
+
E TEMP SENSOR
950)
CN-TH (XH4)
OUTDOOR TEMP. SENSOR
(15k 3950)
1
2
3
4
PIPE TEMP. SENSOR
(4.96k
3800)
(NH2)
CN-TEST
1
2
CN-S (NH2)
2
1
95
How to use electronic circuit diagram
TIMER TABLE <INDOOR>
Name
4 way valve abnormality
Outdoor air temp. for Hz No. de
Anti-dew formation control
Anti-freezing control
Thermo OFF delay
Low pressure contro
Time delay safet
Odour time
In
Test mode
(When test point
Short-circuited)
3 sec.
.
min.
0 sec.
30 sec.
3 min.
24 sec.
16 sec.
8 sec.
8 sec.
0 sec.
3 sec.
18 sec.
97
18.1. REMOTE CONTROL
18.2. PRINT PATTERN
INDOOR UNIT PRINTED CIRCUIT BOARD
99
18.3. PRINT PATTERN
OUTDOOR UNIT PRINTED CIRCUIT BOARD VIEW
[MAICO] Printed in Malaysia
|