SPLIT TYPE
ROOM AIR CONDITIONER
type
WALL MOUNTED
INVERTER
SERVICE
INSTRUCTION
Models Indoor unit
Outdoor unit
AOU09RL2
AOU12RL2
ASU09RL2
ASU12RL2
CONTENTS
1. DESCRIPTION OF EACH CONTROL OPERATION
1. COOLING OPERATION................................................................................................ 01-01
2. HEATING OPERATION................................................................................................. 01-02
3. DRY OPERATION......................................................................................................... 01-02
4. AUTO CHANGEOVER OPERATION............................................................................ 01-03
5. INDOOR FAN CONTROL.............................................................................................. 01-04
6. OUTDOOR FAN CONTROL.......................................................................................... 01-06
7. LOUVER CONTROL..................................................................................................... 01-07
8. COMPRESSOR CONTROL.......................................................................................... 01-08
9. TIMER OPERATION CONTROL................................................................................... 01-09
10. PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST )................................. 01-11
11. FOUR-WAY VALVE EXTENSION SELECT................................................................ 01-11
12. AUTO RESTART......................................................................................................... 01-11
13. MANUAL AUTO OPERATION ( Indoor unit body operation )..................................... 01-11
14. FORCED COOLING OPERATION.............................................................................. 01-12
15. COMPRESSOR PREHEATING.................................................................................. 01-12
16. ECONOMY OPERATION............................................................................................ 01-12
17. POWERFUL OPERATION.......................................................................................... 01-12
18. DEFROST OPERATION CONTROL........................................................................... 01-13
19. OFF DEFROST OPERATION CONTROL................................................................... 01-15
20. VARIOUS PROTECTIONS.......................................................................................... 01-16
2. TROUBLE SHOOTING
2-1 ERROR DISPLAY....................................................................................................... 02-01
2-2 TROUBLE SHOOTING WITH ERROR CODE............................................................ 02-02
2-3 TROUBLE SHOOTING WITH NO ERROR CODE..................................................... 02-21
2-4 SERVICE PARTS INFORMATION.............................................................................. 02-26
3. APPENDING DATA
3-1 FUNCTION SETTING................................................................................................. 03-01
3-1-1 INDOOR UNIT.................................................................................................... 03-01
3-1-2 Procedures to change the Function Setting for wireless RC.............................. 03-03
3-2 Thermistor Resistance Values..................................................................................... 03-06
3-2-1 INDOOR UNIT.................................................................................................... 03-06
3-2-2 OUTDOOR UNIT................................................................................................ 03-06
WALL MOUNTED type
INVERTER
1 . DESCRIPTION OF EACH
CONTROL OPERATION
1. COOLING OPERATION
A sensor (room temperature thermistor) built in the indoor unit body will usually perceive
difference or variation between a set temperature and present room temperature, and
controls the operation frequency of the compressor.
* If the room temperature is 2°C(4°F) higher than a set temperature, the compressor operation
frequency will attain to maximum performance.
* If the room temperature is some degrees lower than a set temperature,
the compressor will be stopped.
* When the room temperature is between +2°C(4°F) to -2.5°C(-5°F) of the setting temperature,
the compressor frequency is controlled within the range shown in Table1.
However, the maximum frequency is limited in the range shown in Fig.1 based on the indoor
fan mode and the outdoor temperature.
( Table 1 : Compressor frequency range )
Minimum
frequency
Maximum
frequency
Maximum
frequency
AOU09RL2
AOU12RL2
57rps
80rps
80rps
96rps
18rps
When the compressor operates for 30 minutes continuously at over the maximum frequency ,
the maximum frequency is changed from Maximum Frequency to Maximum Frequency.
( Fig.1 : Outdoor temperature zone )
When the outdoor
( Table 2 : Limit of maximum speed based on outdoor temperature )
Indoor fan mode
Me Lo
Outdoor
temp. zone
Hi
Quiet
temperature rises
When the outdoor
A zone
B zone
C zone
D zone
E zone
F zone
A zone
B zone
C zone
D zone
E zone
F zone
80rps 49rps 42rps 32rps
80rps 49rps 42rps 32rps
80rps 49rps 42rps 32rps
49rps 44rps 40rps 29rps
49rps 44rps 40rps 29rps
49rps 44rps 40rps 29rps
96rps 61rps 51rps 33rps
96rps 61rps 51rps 33rps
96rps 61rps 51rps 33rps
73rps 57rps 45rps 33rps
73rps 57rps 45rps 33rps
73rps 57rps 45rps 33rps
ASU09RL2
ASU12RL2
temperature drops
36°C
(97°F)
A zone
34°C
(93°F)
32°C
(90°F)
B zone
C zone
D zone
30°C
(86°F)
21°C
(70°F)
19°C
(66°F)
12°C
(54°F)
10°C
(50°F)
2°C
(36°F)
E zone
F zone
0°C
(32°F)
01-01
2. HEATING OPERATION
A sensor (room temperature thermistor) built in the indoor unit body will usually perceive
difference or variation between a set temperature and present room temperature, and
controls the operation frequency of the compressor.
* If the room temperature is lower by 3°C (6°F) than a set temperature, the compressor operation
frequency will attain to maximum performance.
* If the room temperature is some degrees higher than a set temperature,
the compressor will be stopped.
* When the room temperature is between +2.5°C (+5°F) to -3°C (-6°F) of the setting temperature,
the compressor frequency is controlled within the range shown in Table 3.
However, the maximum frequency is limited shown in Table 4 based on the fan mode.
( Table 3 : Compressor frequency range )
Minimum
frequency
Maximum
frequency
AOU09RL2
AOU12RL2
80rps
18rps
120rps
( Table 4 : Limit of maximum speed based on outdoor temperature )
Indoor fan mode
Hi
Me
Lo
Quiet
Auto
AOU09RL2
AOU12RL2
80rps
120rps
3. DRY OPERATION
The compressor frequency shall change according to the temperature, set temperature,
and room temperature variation which the room temperature sensor of the indoor unit body has
detected as shown in the Table 5.
However, after the compressor is driven, the indoor unit shall run at operation frequency of
(09 : 52 rps, 12 : 61 rps) for 60 seconds.
( Table 5 : Compressor frequency in Dry mode)
Operating
frequency
Operating
frequency
X zone
J zone
Y zone
30rps
28rps
0rps
AO09RL2
AO12RL2 X zone
J zone
33rps
25rps
0rps
Y zone
( Fig.2 : Compressor control based on room temperature )
When the room
temperature rises
When the room
temperature drops
Ts+1.5°C (Ts+3°F)
X zone
Ts+0.5°C (Ts+1°F)
Ts -1.5°C (Ts-3°F)
Ts -0.5°C (Ts-1°F)
J zone
Y zone
01-02
4. AUTO CHANGEOVER OPERATION
When the air conditioner is set to the AUTO mode by remote control, operation starts in the optimum
mode from among the Heating, Cooling, Dry and Monitoring modes.
During operation, the optimum mode is automatically switched in accordance with temperature changes.
The temperature can be set between 18°C (64°F) and 30°C (88°F) in 1°C (2°F) steps.
(Fig. 3 : Operation flow chart in Auto changeover)
START
Room temp.
YES
>Ts+2°C (4°F) ?
T
S : Setting temperature
NO
NO
Room temp.
<Ts- 2°C(4°F) ?
YES
HEATING OPERATION
COOLING OPERATION
Thermostat remains
Thermostat remains
in OFF state for 6 minutes or
longer?
YES
YES
YES
in OFF state for 6 minutes or
longer?
NO
NO
System stops
or operation command other than
auto changeover operation?
System stops
or operation command other than
auto changeover operation?
YES
NO
NO
01-03
5. INDOOR FAN CONTROL
1. Fan speed
( Table 6 : Indoor fan speed )
Speed (rpm)
Operation mode
Heating
Air flow mode
ASU12RL2
ASU09RL2
Powerful
Hi
Me+
1420
1360
1290
1120
900
1420
1360
1290
1120
900
Me
Lo
Quiet
700
700
Cool air prevention
600
600
S-Lo
Powerful
Hi
480
480
1400
1320
1120
840
1400
1320
1120
860
Cooling/ Fan
Me
Lo
Quiet
700
700
* Soft Quiet
600
600
X zone: 700
J zone: 600
X zone: 700
J zone: 600
Dry
*Note, during Economy operation and operation mode is Fan, air flow is 1 step downs.
(Hi > Me, Me > Lo, Lo > Quiet, Quiet > Soft Quiet)
2. FAN OPERATION
The airflow can be switched in 5 steps such as Auto, Quiet, Lo, Me, Hi, while the indoor fan only runs.
When fan mode is set at [Auto], it operates on [Me] fan Speed.
3. COOLING OPERATION
Switch the airflow [Auto], and the indoor fan motor will run according to a room temperature, as shown in Fig4.
On the other hand, if switched in [Hi] [Quiet], the indoor motor will run at a constant airflow of [Cool]
operation modes Quiet, Lo, Me, Hi, as shown in Table 6.
( Fig.4 : Airflow change - over ( Cooling : Auto ) )
When the room
temperature rises
When the room
temperature drops
TR : Room temperature
Ts : Setting temperature
TR-Ts > 2.5°C (5°F)
=
Hi mode
Me mode
Lo mode
TR-Ts > 2°C (4°F)
2.5°C (5°F) > TR-Ts > 1.5°C (3°F)
=
2°C (4°F) > TR-Ts > 1°C (2°F)
=
1.5°C (3°F) > TR-Ts
1°C (2°F) > TR-Ts
4. DRY OPERATION
Refer to the Table 6.
During the dry mode operation, the fan speed setting can not be changed.
01-04
5. HEATING OPERATION
Switch the airflow [Auto], and the indoor fan motor will run according to a room temperature, as shown in Fig. 5
On the other hand, if switched in [Hi] [Quiet], the indoor motor will run at a constant airflow
of [Heat] operation modes Quiet, Lo, Me, High, as shown in Table 6.
( Fig.5 : Airflow change - over ( Heating : Auto ) )
When the room
TR : Room temperature
Ts : Setting temperature
When the room
temperature drops
temperature rises
TR-Ts > -1°C (-2°F)
=
Lo mode
Me mode
Me+ mode
TR-Ts > -1.5°C (-3°F)
=
-1°C (-2°F) > TR-Ts > -2°C (-4°F)
=
-1.5°C (3°F) > TR-Ts > -2.5°C (-5°F)
=
-2°C (-4°F) > TR-Ts
-2.5°C (-5°F) > TR-Ts
6. COOL AIR PREVENTION CONTROL (Heating mode)
The maximum value of the indoor fan speed is set as shown in Fig.6 based on the detected
temperature by the indoor heat-exchanger sensor on heating mode.
( Fig.6 : Cool air prevension control )
<Powerful operation>
<Normal operation>
When the Indoor heat
exchanger temp. rises
When the Indoor heat
exchanger temp. drops
When the Indoor heat
exchanger temp. drops
When the Indoor heat
exchanger temp. rises
* Hi or setting
Fan mode
Powerful
42°C
42°C (108°F)
39°C (102°F)
(108°F)
37°C
Hi
37°C (99°F)
39°C
(102°F)
* Me+ or setting
Fan mode
(99°F)
34°C
(93°F)
32°C
(90°F)
Lo
37°C
(99°F)
34°C (93°F)
Cool air
* Lo or setting
Fan mode
prevention
30°C
(86°F)
37°C (99°F)
30°C (86°F)
28°C
(82°F)
S-Lo
Cool air
32°C (90°F)
28°C (82°F)
prevention
* Lower speed is selected.
S-Lo
* Lower speed is selected.
7. MOISTURE RETURN PREVENTION CONTROL (Cooling mode& Dry mode)
Switch the airflow [Auto] at cooling mode, and the indoor fan motor will run as shown in Fig.7.
( Fig.7 : Indoor fan control )
Compressor
ON
OFF
Indoor fan
Setting air flow
Indoor fan
(as shown in Table 7)
S-Lo
OFF
10
30
60
180
60
180
60
10
30
(sec)
( Table 7 : Indoor fan speed )
Dry
Cooling
X zone
700rpm
J zone
Y zone
ASU09/12RL2
600rpm
0
480rpm 700rpm
01-05
6. OUTDOOR FAN CONTROL
1. Outdoor Fan Motor
Following table shows the type of the outdoor fan motor. The control method is different
between AC motor and DC motor.
( Table 8 : Type of Motor )
AC motor
DC motor
AOU09RL2
AOU12RL2
2. Fan Speed
( Table 9 : Outdoor fan speed )
Cooling
Heating
Dry
Zone
Y
Z
F
G
Y
730 / 650 / 470
730 / 470 / 360
360 / 150
AOU09RL2
900 / 650 / 470
730 / 470
210 / 150
860 / 760 / 470
860 / 470 / 380
380 / 280
Z
F
AOU12RL2
900 / 760 / 680 / 470
760 / 470
G
280 / 200
Refer to Fig.8
( Fig.8 : Outside air temperature zone selection )
Outside air
temperature
Outside air
temperature
Y zone
Z zone
F zone
G zone
21°C (70°F)
12°C (54°F)
2°C (36°F)
19°C (66°F)
10°C (50°F)
0°C (32°F)
*The outdoor fan speed mentioned adove depends on the compressor frequency.
(When the compressor frequency increases, the outdoor fan speed also changes to the higher
speed. When the compressor frequency decreases, the outdoor fan speed also changes to the
lower speed.)
*After the defrost control is operated on the heating mode, the fan speed keeps at the higher speed
as table 10 without relating to the compressor frequency.
( Table 10 : Outdoor fan speed after the defrost )
AOU09RL2
900 rpm
AOU12RL2
01-06
7. LOUVER CONTROL
1. VERTICAL LOUVER CONTROL
(Function Range)
Each time the button is pressed, the air direction range will change as follow:
Fig.8 : Air Direction Range
Types of Air flow Direction Setting:
,
,
,
,
,
,
: During Cooling/Dry modes
: During Heating
1
2
3
The Remote Controller's display does not change.
4
5
6
7
Use the air direction adjustments within the ranges shown above.
The vertical airflow direction is set automatically as shown, in accordance with the type of operation selected.
Cooling / Dry mode Horizontal flow
Heating mode
Downward flow
for more than 30 minutes in Cooling or Dry mode,
If you set the angle to position
~
they automatically return to position
.
In Cooling or Dry mode, if the angle is set to position
~
for many hours,
condensation may be formed, and the drips may wet your property.
2. ADJUST THE RIGHT-LEFT LOUVERS
Move the Right-Left louvers to adjust air flow in the direction you prefer.
Right-Left Louvers
Knob
Knob (2 places)
3. SWING OPERATION
To select Vertical Airflow Swing Operation
When the swing signal is received from the remote controller, the vertical louver starts to swing.
(Table10 : Swinging Range)
Range
Cooling / Dry mode
Fan mode (
)
ode
Heating m
(
)
Fan mode
The SWING operation may stop temporarily when the air conditioner’s fan is not operating,
or when operating at very low speeds.
To select Horizontal Airflow Swing Operation
(No function)
01-07
8. COMPRESSOR CONTROL
1. OPEARTION FREQUENCY RANGE
The operation frequency of the compressor is different based on the operation mode as
shown in the Table 11.
(Table 11 : Compressor frequency range)
Cooling / Dry
Heating
Minimum Maximum
Minimum
18rps
Maximum
120rps
AOU09RL2
AOU12RL2
80rps
18rps
96rps
2. OPEARTION FREQUENCY CONTROL AT NORMAL START UP
The compressor frequency soon after the start-up is controlled as shown in the Fig.9.
(Fig.9 : Compressor control at start-up)
Frequency
Frequency
Frequency
Frequency
Frequency
Frequency
Time
Time
Time
Time
Time
6
Time
(Frequency)
Frequency
Frequency
Frequency
Frequency
Frequency
Frequency
AOU09RL2
AOU12RL2
56rps
56rps
67rps
74rps
75rps
87rps
78rps
97rps
78rps
78rps
108rps
119rps
(Time)
Time
Time
Time
Time
Time
Time 6
AOU09RL2
AOU12RL2
80sec
60sec
140sec
100sec
200sec
140sec
380sec
200sec
440sec
350sec
440sec
410sec
3. LIMITATION OF COMPRESSOR FREQUENCY BY OUTDOOR TEMPERATURE
The minimum compressor frequency is limited by outdoor temperature as shown in the Table12.
(Table12 : Limitation of Compressor Frequency)
[ Cooling/ Dry ]
10°C (50°F)
14°C (59°F)
Under Over
23rps
27rps
40°C (104°F)
Under
35rps
45rps
Over
Under
Over
AOU09RL2
AOU12RL2
-------
30rps
[ Heating ]
- 3°C (26°F)
7°C (45°F)
Under Over
27rps
14°C (59°F)
40°C (104°F)
Under
34rps
36rps
Over
Under
Over
Under
Over
AOU09RL2
AOU12RL2
22rps
27rps
-------
30rps
27rps
01-08
9. TIMER OPEARTION CONTROL
9-1 WIRELESS REMOTE CONTROLLER
The Table 13 shows the available timer setting based on the product model.
( Table 13 : Timer Setting )
ON TIMER / OFF TIMER
PROGRAM TIMER
SLEEP TIMER
ASU09RL2
ASU12RL2
1. OPEARTION FREQUENCY RANGE
OFF timer : When the clock reaches the set time, the air conditioner will be turned off.
Operation mode
Stop mode
Set time of timer
ON timer : When the clock reaches the set time, the air conditioner will be turned on.
Operation mode
Stop mode
Set time of timer
2. PROGRAM TIMER
The program timer allows the OFF timer and ON timer to be used in combination one time.
Operation mode
Operation mode
Operation mode
Stop mode
Stop mode
Stop mode
Set time
Set time
Set time
Set time
Operation will start from the timer setting (either OFF timer or ON timer) whichever is closest
to the clock's current timer setting.
The order of operations is indicated by the arrow in the remote control unit's display.
SLEEP timer operation cannot be combined with ON timer operation.
01-09
3. SLEEP TIMER
If the sleep is set, the room temperature is monitored and the operation is stopped automatically.
If the operation mode or the set temperature is change after the sleep timer is set, the operation is
continued according to the changed setting of the sleep timer from that time ON.
In the cooling operation mode
When the sleep timer is set, the setting temperature is increased 1°C (2°F).
It increases the setting temperature another 1°C (2°F) after 1 hour.
After that, the setting temperature is not changed and the operation is stopped at the time
of timer setting.
Set temperature rises
( Ts : Set temperature )
+2°C (4°F)
+1°C (2°F)
Ts
Stop of operation
Set
60min
In the heating operation mode
When the sleep timer is set, the setting temperature is decreased 1°C (2°F).
It decreases the setting temperature another 1°C (2°F) every 30 minutes.
Upon lowering 4°C (8°F), the setting temperature is not changed and the operation stops at
the time of timer setting.
Set temperature lowers
( Ts : Set temperature )
Ts
-1°C (-2°F)
-2°C (-4°F)
-3°C (-6°F)
-4°C (-8°F)
Stop of operation
Set
30min
30min
30min
01-10
10. PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST )
The compressor won't enter operation status for 2 minutes and 20 seconds after the compressor is stopped,
even if any operation is given.
11. FOUR-WAY VALVE EXTENSION SELECT
At the time when the air conditioner is switched from the cooling mode to heating mode, the
compressor is stopped, and the four-way valve is switched in 2 minutes and 20 seconds later after
the compressor stopped.
12. AUTO RESTART
When the power was interrupted by a power failure, etc. during operation, the operation contents
at that time are memorized and when power is recovered, operation is automatically started with
the memorized operation contents.
When the power is interrupted and recovered during timer operation, since the timer operation time
is shifted by the time the power was interrupted, an alarm is given by blinking (7 sec ON/2 sec OFF)
the indoor unit body Timer lamp.
[ Operation contents memorized when the power is interrupted ]
Operation mode
Set temperature
Set air flow
Timer mode and set time
Set air flow Direction
Swing
ECONOMY operation
13. MANUAL AUTO OPERATION (Indoor unit body operation)
When the remote control is lost or battery power dissipated, this function will work without the remote control.
When MANUAL AUTO button is set more than 3seconds and less than 10seconds, MANUAL AUTO OPERATION
will be started as shown in Table14.
To stop operation, press the MANUAL AUTO button for 3seconds.
(Table14 : MANUAL AUTO OPERATION)
Manual auto operation
OPERATION MODE Auto changeover
Press and hold MANUAL AUTO
button for 3 ~ 10seconds
FAN CONT. MODE
TIMER MODE
SETTING TEMP.
SETTING LOUVER
SWING
Auto
(No timer setting available)
Continuous
24°C (75°F)
Standard
OFF
ECONOMY
OFF
01-11
14. FORCED COOLING OPERATION (TEST OPERATION)
When FORCED COOLING OPERATION is set, the operation is controlled as shown in Table15.
( Table15 : FORCED COOLING OPERATION )
Forced cooling operation
OPERATION MODE
FAN CONT. MODE
TIMER MODE
Cooling
Hi
-
SETTING TEMP.
SETTING LOUVER
Room Temp is not controlled
Horizontal
(It is changed follow as setting of remote controller)
SWING
ECONOMY
OFF
-
Forced cooling operation is started when press MANUAL AUTO button for 10 seconds or more.
During the forced cooling operation, it operates regardless of room temperature sensor.
Operation lamp and Timer lamp blink at the same time during the forced cooling operation.
They blink for 1 second ON and 1 second OFF on both Operation lamp and Timer lamp (same as test operation).
Forced cooling operation is released after 60 minutes of starting operation or pressing MANUAL AUTO button
for 3 seconds or pressing START/STOP button on the remote controller.
15. COMPRESSOR PREHEATING
When the outdoor heat exchanger temperature is lower than 5°C and the all operation has
been stopped for 30 minutes, power is applied to the compressor and the compressor is heated.
(By heating the compressor, warm air is quickly discharged when operation is started.)
When operation was started, and when the outdoor temperature rises to 7°C (44.6°F) or greater,
preheating is ended.
16. ECONOMY OPERATION
The ECONOMY operation functions by pressing ECONOMY button on the remote controller.
At the maximum output, ECONOMY Operation is approximately 70% of normal air conditioner operation
for cooling and heating.
The ECONOMY operation is almost the same operation as below settings.
( Table 16 )
Heating
Mode
Cooling/ Dry
Target temperature Setting temp.+1°C (2°F) Setting temp.-1°C (-2°F)
17. POWERFUL OPERATION
The POWERFUL OPERATION functions by pressing POWERFUL button on the remote controller.
The indoor unit & outdoor unit will operate at maximum power as shown in Table17.
(Table17)
Powerful operation
COMPRESSOR FREQUENCY Maximum
FAN CONT. MODE
SETTING LOUVER
Powerful
Cooling/ Dry : 3, Heating : 5
Release Condition is as follows.
[Cooling / Dry]
- Room temperature < Setting temperature - 1.5°C (-3°F) or Operation time has passed 20 minutes.
=
[Heating]
- Room temperature > Setting temperature +1.5°C (+3°F) or Operation time has passed 20 minutes.
=
01-12
3. Defrost Flow Chart
The defrosting shall proceed by the integrating operation time, outdoor temperature
and outdoor heat exchanger temperature as follows.
Heating operation start : Compressor ON
(Not defrosted for 10 minutes)
Integrating defrost
Normal defrost
Intermittent operation
Continuous operation
Outside air temp. > -10°C Outside air temp. < -10°C
=
(14°F)
(14°F)
Compressor
integrating
operation:
Compressor
integrating
operation:
Compressor
OFF count :
40 times
Outdoor HEX temp.
- Outside air temp.
Below - 7°C(-44.6°F)
or
Outdoor HEX temp.
Below - 17°C(1.4°F)
Over 240 min.
Over 213 min.
(Less than 10min.)
Outdoor HEX temp.
Below - 20°C(-4°F)
Outdoor
Outdoor
heat exchanger heat exchanger
temperature:
Below - 3°C
(26.6°F)
temperature:
Below - 5°C
(23°F)
Defrost start
Defrost Indicator:
[Operation lamp]
7 sec ON / 2 sec OFF
Outdoor fan : OFF
Compressor speed : 0 rps
4-way valve : OFF
Compressor speed : 90rps
Outdoor HEX temp.: Over 16°C (60.8°F)
or
Compressor ON time: Maximum 15 minutes
Defrost end
01-14
19. OFF DEFROST OPEARTION CONTROL
When operation stops in the [Heating operation] mode, if frost is adhered to the outdoor unit heat
exchanger, the defrost operation will proceed automatically. In this time, if indoor unit Operation lamp
flashes slowly (7 sec ON / 2 sec OFF), the outdoor unit will allow the heat exchanger to defrost,
and then stop.
1. OFF DEFROST OPERATION CONDITION
In heating operation, the outdoor heat exchanger temperature is less than - 4°C (24.8°F),
compressor continuous operation more than 10 minutes, and
compressor operation integrating time lasts for more than 30 minutes.
2. OFF DEFROST END CONDITION
Release Condition
Outdoor heat exchanger temperature sensor value is higher than
16°C (60.8°F) or Compressor operation time has passed 15 minutes.
OFF Defrost Flow Chart
Heating operation stop
Outdoor heat exchanger temperature :
Below - 4°C (24.8°F)
Compressor continuous operation :
Over 10 minutes
Compressor integrating operation :
Over 30 minutes
Defrost start
Defrost Indicater:
[Operation lamp]
7 sec ON / 2 sec OFF
Outdoor heat exchanger temperature:
Over 16°C (60.8°F) or
Compressor ON time: Over 15 minutes
Defrost end
01-15
20. VARIOUS PROTECTIONS
1. DISCHARGE GAS TEMPERATURE OVERRISE PREVENSION CONTROL
The discharge gas thermosensor (discharge thermistor : Outdoor side) will detect discharge gas temperature.
When the discharge temperature becomes higher than Temperature , the compressor frequency
is decreased 20rps, and it continues to decrease the frequency for 20rps every 120 seconds until
the temperature becomes lower than Temperature .
When the discharge temperature becomes lower than Temperature , the protection control of the
compressor frequency will be released.
When the discharge temperature becomes higher than Temperature , the compressor is stopped
and the indoor unit body Operation lamp and Timer lamp starts blinking.
(Table 20 : Discharge temperature over rise prevension control / Release temperature)
Temperature
Temperature
Temperature
104°C
101°C
110°C
(219.2°F)
(213.8°F)
(230°F)
2. CURRENT RELEASE CONTROL
The compressor frequency is controlled so that the outdoor unit input current does not exceed
the current limit value that was set up with the outdoor temperature.
The compressor frequency returns to the designated frequency of the indoor unit at the time
when the frequency becomes lower than the release value.
( Table 21 : Current release operation value / Release value )
[ Heating ]
[ Heating ]
AOU09RL2
AOU12RL2
OT (Control / Release)
OT (Control / Release)
10.5A / 10.0A
11.0A / 10.5A
17°C (62.6°F)
17°C (62.6°F)
12.0A / 11.5A
14.0A / 13.5A
14.5A / 13.5A
12.0A / 11.5A
12.5A / 12.0A
12.5A / 12.0A
12°C (53.6°F)
5°C (41°F)
12°C (53.6°F)
5°C (41°F)
OT : Outdoor Temperature
OT : Outdoor Temperature
[ Cooling ]
[ Cooling ]
AOU09RL2
AOU12RL2
OT (Control / Release)
8.0A / 7.5A
OT (Control / Release)
9.0A / 8.5A
46°C (114.8°F)
46°C (114.8°F)
9.0A / 8.5A
10.0A / 9.5A
40°C (104°F)
40°C (104°F)
12.0A / 11.5A
12.0A / 11.5A
OT : Outdoor Temperature
OT : Outdoor Temperature
01-16
3. ANTIFREEZING CONTROL (Cooling and Dry mode)
The compressor frequency is decrease on cooling & dry mode when the indoor heat exchanger
temperature sensor detects the temperature lower than Temperature .
Then, the anti-freezing control is released when it becomes higher than Temperature .
(Table 22 : Anti-freezing Protection Operation / Release Temperature)
Outdoor temperature
Temperature
Temperature
7°C (44.6°F)
Over than 10°C (50°F)*1
or 12°C (53.6°F) *2
4°C (39.2°F)
Less than 10°C(50°F) *1
or 12°C (53.6°F) *2
13°C (55.4°F)
*1. When the temperature rises.
*2. When the temperature drops.
4. COOLING PRESSURE OVERRISE PROTECTION
When the outdoor unit heat exchange sensor temperature rises to 67°C (152.6°F) or greater,
the compressor and the outdoor fan motor are stopped and trouble display is performed.
5. HIGH TEMPERATURE RELEASE CONTROL ( HEATING MODE )
On heating mode, the compressor frequency is controlled as following based on the
detection value of the indoor heat exchanger temperature sensor.
[ Control System ]
Indoor heat exchange
temperature rises
Compressor is stopped
63°C (145.4°F)
The compressor frequency is
decreased 25rps every 120seconds.
55°C (131°F)
The compressor frequency is
decreased 3rps every 60seconds.
53°C (127.4°F)
Stable zone
50°C (122°F)
It returns to the normal operation
Indoor heat exchange
temperature drops
01-17
WALL MOUNTED type
INVERTER
2 . TROUBLE SHOOTING
2. TROUBLESHOOTING
2-1 ERROR DISPLAY
Please refer the flashing pattern as follows.
Indoor Unit : ASU09/ 12RL2
The Operation, Timer and Economy lamps operate as follows according to the error contents.
Indoor Unit Display
Trouble
shooting
Error Contents
[
]
[
]
[
]
Economy
Operation
Timer
(Green)
(Green)
(Orange)
1 times
1 times
Continuous
Serial communication error
1
2
3 times
3 times
4 times
4 times
5 times
6 times
6 times
6 times
7 times
7 times
7 times
8 times
9 times
9 times
9 times
9 times
10 times
2 times
5 times
1 times
2 times
1 times
2 times
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Continuous
Indoor unit PCB model information error
Manual auto switch error
3
Room temp. sensor error
4
Indoor unit Heat Ex. middle temp.
sensor error
5
Indoor unit fan motor error
6
Outdoor unit main PCB model
information error or communication error
7
8
PFC circuit error
4 times
5 times
1 times
3 times
4 times
Trip terminal L error
9
Continuous
Continuous
Discharge temp. sensor error
10
11
12
13
14
15
16
17
18
Outdoor unit Heat Ex. liquid temp.
sensor error
Continuous
Continuous
Continuous
Outdoor temp. sensor error
Current sensor error
4 times
4 times
5 times
7 times
9 times
1 times
Trip detection
Continuous
Continuous
Continuous
Continuous
Continuous
Compressor rotor position detection error
Outdoor unit fan motor error
4-way valve error
Discharge temp. error
02-01
2-2 TROUBLE SHOOTING WITH ERROR CODE
Trouble shooting 1-1
Indicate or Display:
OUTDOOR UNIT Error Method:
Refer to error code table.
Serial communication error
(Serial Reverse Transfer Error)
Detective details:
Detective Actuators:
When the indoor unit cannot receive the serial signal from Outdoor unit
more than 2minutes after power ON, or the indoor unit cannot receive
the serial signal more than 15seconds during normal operation.
Outdoor unit Main PCB
Forecast of Cause:
1. Connection failure
2. External cause
3. Main PCB failure
Check Point 1-1 : Reset the power and operate
Does Error indication show again?
NO
YES
Check Point 2 : Check Connection
Check Point 1-2: Check external cause such as noise
Check any loose or removed connection line of
Indoor unit and Outdoor unit.
>> If there is an abnormal condition, correct it by
referring to Installation Manual or Data &
Technical Manual.
Check the complete insulation of the grounding.
Check if there is any equipment that causes harmonic wave
near the power cable (Neon light bulb or any electronic
equipment which causes harmonic wave).
OK
Check Point 3 : Check the voltage of power supply
Check the voltage of power supply
>> Check if AC103V (AC115V -10%) - 127V (AC115V +10%) appears
at Outdoor Unit Terminal L - N.
OK
Check Point 4 : Check Serial Signal (Reverse Transfer Signal)
Check Serial Signal (Reverse Transfer Signal)
>> Check if Indicated value swings between AC45V and AC135V at Outdoor Unit Terminal 1 - 3.
>> If it is abnormal, replace Main PCB.
GREEN
WHITE
N
BLACK
L
RED
+
-
3
WHITE
2
BLACK
1
02-02
Trouble shooting 1-2
Indicate or Display:
INDOOR UNIT Error Method:
Refer to error code table.
Serial communication error
(Serial Forward Transfer Error)
Detective details:
Detective Actuators:
When the outdoor unit cannot receive the serial signal from Indoor unit
more than 10seconds.
Indoor unit Controller PCB
Indoor unit Fan motor
Forecast of Cause:
1. Connection failure 2. External cause 3. Controller PCB failure 4. Indoor unit fan motor failure
Check Point 1-1 : Reset the power and operate
NO
Does Error indication show again?
YES
Check Point 2 : Check Connection
Check Point 1-2: Check external cause such as noise
Check the complete insulation of the grounding.
Check any loose or removed connection line of
Indoor unit and Outdoor unit.
>> If there is an abnormal condition, correct it by
referring to Installation Manual or Data &
Technical Manual.
Check if there is any equipment that causes harmonic wave
near the power cable (Neon light bulb or any electronic
equipment which causes harmonic wave).
OK
Check Point 3 : Check the voltage of power supply
Check the voltage of power supply
>> Check if AC103V (AC115V -10%) - 127V (AC115V +10%) appears
at Outdoor Unit Terminal L - N.
OK
Check Point 4 : Check Serial Signal (Reverse Transfer Signal)
Check Serial Signal (Forward Transfer Signal)
>> Check if Indicated value swings between AC30V and AC130V at Outdoor Unit Terminal 2 - 3.
>> If it is abnormal, replace Controller PCB.
>> If it is abnormal, Check Indoor unit fan motor. (PARTS INFORMATION 4)
>> If Indoor unit fan motor is abnormal, replace Indoor unit fan motor and Controller PCB.
GREEN
WHITE
N
BLACK
L
+
-
RED
3
2
1
WHITE
BLACK
02-03
Trouble shooting 2
INDOOR UNIT Error Method:
Indicate or Display:
Refer to error code table.
Indoor unit PCB model information
error
Detective details:
Detective Actuators:
When power is on and there is some below case.
1. When model information of EEPROM is incorrect.
2. When the access to EEPROM failed.
Indoor unit Controller PCB
Forecast of Cause:
1. External cause 2. Defective connection of electric components 3. Controller PCB failure
Check Point 1-1 : Reset Power Supply and operate
NO
Does Error indication show again?
YES
Check Point 1-2 :
Check external cause such as noise
Check Point 2 :
Check Indoor unit electric components
Check all connectors.
Check if the ground connection is proper.
(loose connector or incorrect wiring)
Check if there is any equipment that causes harmonic wave
near the power cable (Neon light bulb or any electronic
equipment which causes harmonic wave).
Check any shortage or corrosion on PCB.
Check Point 3 : Replace Controller PCB
Change Controller PCB.
Note : EEPROM
EEPROM(Electronically Erasable and
Programmable Read Only Memory) is a non-
volatile memory which keeps memorized
information even if power is turned off. It can
change the contents electronically.
To change the contents, it uses higher
voltage than normal, and it can not change a
partial contents. (Rewriting shall be done
upon erasing the all contents.)
There is a limit in a number of rewriting.
02-04
Trouble shooting 3
Indicate or Display:
INDOOR UNIT Error Method:
INDOOR UNIT
Refer to error code table.
Manual auto switch error
Detective Actuators:
Detective details:
When the Manual auto switch becomes ON for consecutive 60 or
more seconds.
Indoor unit Controller PCB
Indicator PCB
Manual auto switch
Forecast of Cause :
1. Manual auto switch failure 2.Controller PCB and Indicator PCB failure
Check Point 1 : Check the Manual auto switch
Check if Manual auto switch is kept pressed.
Check ON/OFF switching operation by using a meter.
>>If Manual Auto Switch is disabled (on/off switching), replace it.
OK
Check Point 2 : Replace Controller PCB
If Check Point 1 do not improve the symptom, change Controller PCB and Indicator PCB.
02-05
Indicate or Display:
Trouble shooting 4
INDOOR UNIT Error Method:
INDOOR UNIT
Refer to error code table.
Room temp. sensor error
Detective details:
Detective Actuators:
When Room temperature thermistor open or short-circuit is detected.
Indoor unit Controller PCB
Room temperature thermistor
Forecast of Cause :
1. Connector connection failure 2.Thermistor failure 3. Controller PCB failure
Check Point 1 : Check connection of Connector
Check if connector is removed.
Check erroneous connection.
Check if thermistor cable is open.
>>Upon correcting the removed connector or mis-wiring, reset the power.
OK
Chheecckk PPooiinntt22:: Remove connector and check Thermistor resistance value
Thermistor Characteristics (Approx. value)
-10°C
-5°C
0°C
5°C
10°C
15°C
20°C
25°C
Temperature
(14°F) (23°F) (32°F) (41°F) (50°F) (59°F) (68°F) (77°F)
Resistance Value (k )
55.46 42.36 32.67
30°C 35°C 40°C
25.39 19.91
45°C
15.71
12.5
10.0
Temperature
(86°F) (95°F) (104°F) (113°F)
Resistance Value (k )
8.051 6.52 5.316 4.354
If Thermistor is either open or shorted, replace it and reset the power.
OK
Chheecckk PPooiinntt33:: Check voltage of Controller PCB (DC5.0V)
Make sure circuit diagram of indoor unit and check terminal voltage at Thermistor (DC5.0V)
THERMISTOR
(PIPE)
BLACK
1 1
BLACK
2 2
CN4
BLACK
BLACK
3 3
4 4
THERMISTOR
(ROOM TEMP.)
If the voltage does not appear, replace Controller PCB.
02-06
Trouble shooting 5
Indicate or Display:
INDOOR UNIT Error Method:
INDOOR UNIT
Indoor unit Heat Ex. middle temp.
sensor error
Refer to error code table.
Detective Actuators:
Detective details:
When Heat Ex. temperature thermistor open or short-circuit is detected.
Indoor unit Controller PCB
Heat Ex. temperature thermistor
Forecast of Cause :
1. Connector connection failure 2.Thermistor failure 3. Controller PCB failure
Check Point 1 : Check connection of Connector
Check if connector is removed.
Check erroneous connection.
Check if thermistor cable is open.
>>Upon correcting the removed connector or mis-wiring, reset the power.
OK
Chheecckk PPooiinntt22:: Remove connector and check Thermistor resistance value
Thermistor Characteristics (Approx. value)
-10°C
-5°C
0°C
5°C
10°C
20°C
Temperature
(14°F) (23°F) (32°F) (41°F) (50°F) (68°F)
Resistance Value (k )
295.1
30°C
223.3 170.7 131.4
40°C 50°C 60°C
102.1
63°C
62.9
Temperature
(86°F) (104°F) (122°F) (140°F) (144°F)
Resistance Value (k )
39.78 25.8 17.11 11.6 10.36
If Thermistor is either open or shorted, replace it and reset the power.
OK
Check Point 3 : Check voltage of Controller PCB (DC5.0V)
Make sure circuit diagram of indoor unit and check terminal voltage at Thermistor (DC5.0V)
THERMISTOR
(PIPE)
BLACK
1 1
BLACK
2 2
CN4
BLACK
BLACK
3 3
4 4
THERMISTOR
(ROOM TEMP.)
If the voltage does not appear, replace Controller PCB.
02-07
Trouble shooting 6
Indicate or Display:
INDOOR UNIT Error Method:
Refer to error code table.
Indoor unit fan motor error
Detective Actuators:
Detective details:
When the condition that actual frequency of Indoor Fan is
below 1/3 of target frequency is continued more than 56 seconds.
Indoor unit Controller PCB
Indoor unit Fan motor
Forecast of Cause:
1. Fan rotation failure 2. Fan motor winding open 3. Motor protection by surrounding temperature rise
4. Control PCB failure 5. Indoor unit fan motor failure
Check Point 1 : Check rotation of Fan
Rotate the fan by hand when operation is off.
(Check if fan is caught, dropped off or locked motor)
>>If Fan or Bearing is abnormal, replace it.
OK
Check Point 2 : Check ambient temp. around motor
Check excessively high temperature around the motor.
(If there is any surrounding equipment that causes heat)
>>Upon the temperature coming down, restart operation.
OK
Check Point 3 : Check Indoor unit fan motor
Check Indoor unit fan motor. (PARTS INFORMATION 4)
>>If Indoor unit fan motor is abnormal, replace Indoor unit fan motor.
OK
Check Point 4 : Replace Controller PCB
If Check Point 1- 3 do not improve the symptom, replace Controller PCB.
02-08
Trouble shooting 7
OUTDOOR UNIT Error Method:
Indicate or Display:
Refer to error code table.
Outdoor unit main PCB model
information error or communication error
Detective details:
Detective Actuators:
When model information of EEPROM is incorrect at power ON.
If the above operation is repeated 3 times,
Outdoor unit Main PCB
the compressor stops permanently.
Forecast of Cause:
1. External cause (Noise, temporary open, voltage drop) 2. Main PCB failure
Check Point 1-1 : Reset Power supply and operate
NO
Does Error indication show again?
YES
Check Point 1-2 : Check external cause
Check Point 2 : Replace Main PCB
Check if temporary voltage drop was not generated.
Check if momentary open was not generated.
Check if ground is connection correctly or there are no related
cables near the power line.
Change Main PCB.
02-09
Trouble shooting 8
Indicate or Display:
OUTDOOR UNIT Error Method:
INDOOR UNIT
Refer to error code table.
PFC circuit error
Detective Actuators:
Detective details:
When inverter output DC voltage is higher than 415V for over 3 seconds,
the compressor stops.
Outdoor unit Main PCB
If the same operation is repeated 5 times, the compressor stops permanently.
Forecast of Cause :
1. External cause 2. Connector connection failure 3. Main PCB failure
Check Point 1 : Check external cause at Indoor and Outdoor (Voltage drop or Noise)
Instant drop : Check if there is a large load electric apparatus in the same circuit.
Momentary power failure : Check if there is a defective contact or leak current
in the power supply circuit.
Noise : Check if there is any equipment causing harmonic wave near electric line.
(Neon bulb or electric equipment that may cause harmonic wave)
Check the complete insulation of grounding.
OK
Check Point 2 : Check connection of Connector
Check if connector is removed.
Check erroneous connection.
Check if cable is open.
>>Upon correcting the removed connector or mis-wiring, reset the power.
OK
Check Point 3 : Replace Main PCB
If Check Point 1, 2 do not improve the symptom, change Main PCB.
02-10
Trouble shooting 9
Indicate or Display:
OUTDOOR UNIT Error Method:
Refer to error code table.
Trip terminal L error
Detective details:
Detective Actuators:
When the signal from FO terminal of IPM in Main PCB is "L"(=0V)
while the compressor stops.
Outdoor unit Main PCB
Forecast of Cause :
1. Main PCB failure
Check Point 1 : Replace Main PCB
Change Main PCB.
02-11
Trouble shooting 10
Indicate or Display:
OUTDOOR UNIT Error Method:
INDOOR UNIT
Refer to error code table.
Discharge temp. sensor error
Detective details:
Detective Actuators:
When Discharge pipe temperature thermistor open or short-circuit
is detected at power ON or while running the compressor.
Outdoor unit Main PCB
Discharge pipe temperature thermistor
Forecast of Cause :
1. Connector connection failure 2.Thermistor failure 3. Main PCB failure
Check Point 1 : Check connection of Connector
Check if connector is removed.
Check erroneous connection.
Check if thermistor cable is open.
>>Upon correcting the removed connector or mis-wiring, reset the power.
OK
CChhecckk PPooiinntt 22:: Remove connector and check Thermistor resistance value
Thermistor Characteristics (Approx. value)
-10°C -5°C
0°C
5°C
10°C 20°C 30°C
Temperature
(14°F) (23°F) (32°F) (41°F) (50°F) (68°F) (86°F)
41.33
286.3 218.6 168.6 130.9 102.5 64.22
Resistance Value (k )
40°C 50°C 60°C 70°C 80°C 90°C 100°C 110°C 120°C
(104°F)(122°F)(140°F)(158°F) (176°F)(194°F)(212°F)(230°F)(248°F)
Temperature
Resistance Value (k )
27.26 18.40 12.68 8.909 6.375 4.639 3.430 2.573 1.956
If Thermistor is either open or shorted, replace it and reset the power.
OK
Check Point 3 :
Check Point 3 : Check voltage of Main PCB (DC5.0V)
Make sure circuit diagram of outdoor unit and check terminal voltage at Thermistor (DC5.0V)
THERMISTOR
(PIPE)
BLACK
1 1
BLACK
2 2
BLACK
BLACK
CN71
3 3
4 4
THERMISTOR
(DISCHARGE)
THERMISTOR
(OUTDOOR)
BLACK
BLACK
1 1
2 2 CN70
3 3
If the voltage does not appear, replace Main PCB.
02-12
Trouble shooting 11
Indicate or Display:
OUTDOOR UNIT Error Method:
Refer to error code table.
Outdoor unit Heat Ex. liquid temp.
sensor error
Detective details:
Detective Actuators:
Outdoor unit Main PCB
When Heat exchanger temperature thermistor open or
Heat exchanger temperature thermistor
short-circuit is detected at power ON or while running the compressor.
Forecast of Cause :
1. Connector connection failure 2.Thermistor failure 3. Main PCB failure
Check Point 1 : Check connection of Connector
Check if connector is removed.
Check erroneous connection.
Check if thermistor cable is open.
>>Upon correcting the removed connector or mis-wiring, reset the power.
OK
CChhecckk PPooiinntt 22:: Remove connector and check Thermistor resistance value
Thermistor Characteristics (Approx. value)
-10°C -5°C
0°C
5°C 10°C 20°C 30°C
Temperature
(14°F) (23°F) (32°F) (41°F) (50°F) (68°F) (86°F)
3.947
Resistance Value (k )
27.21 20.80 16.05 12.47 9.775 6.129
40°C 50°C 60°C 70°C 80°C
(104°F)(122°F)(140°F)(158°F)(176°F)
Temperature
Resistance Value (k )
2.606 1.759 1.213 0.8531 0.6115
If Thermistor is either open or shorted, replace it and reset the power.
OK
Check Point 3 :
Check Point 3 : Check voltage of Main PCB (DC5.0V)
Make sure circuit diagram of outdoor unit and check terminal voltage at Thermistor (DC5.0V)
THERMISTOR
(PIPE)
BLACK
1 1
BLACK
2 2
BLACK
BLACK
CN71
3 3
4 4
THERMISTOR
(DISCHARGE)
THERMISTOR
(OUTDOOR)
BLACK
BLACK
1 1
2 2 CN70
3 3
If the voltage does not appear, replace Main PCB.
02-13
Indicate or Display:
Trouble shooting 12
OUTDOOR UNIT Error Method:
Refer to error code table.
Outdoor temp. sensor error
Detective details:
Detective Actuators:
Outdoor unit Main PCB
Outdoor temperature thermistor
When Outdoor temperature thermistor open or short-circuit is
detected at power ON or while running the compressor.
Forecast of Cause :
1. Connector connection failure 2.Thermistor failure 3. Main PCB failure
Check Point 1 : Check connection of Connector
Check if connector is removed.
Check erroneous connection.
Check if thermistor cable is open.
>>Upon correcting the removed connector or mis-wiring, reset the power.
OK
CChhecckk PPooiinntt 22:: Remove connector and check Thermistor resistance value
Thermistor Characteristics (Approx. value)
-20°C -15°C -10°C -5°C
(4.0°F) (5°F) (14°F) (23°F) (32°F) (41°F) (50°F)
0°C
5°C 10°C
Temperature
20.56
109.0 80.56 60.23 45.40 34.57 26.53
Resistance Value (k )
15°C 20°C 25°C 30°C 35°C 40°C 45°C 50°C 55°C
(59°F) (68°F) (77°F) (86°F) (95°F) (104°F)(113°F) (122°F)(131°F)
Temperature
Resistance Value (k )
16.04 12.26 10.00 7.978 6.408 5.184 4.216 3.451 2.841
If Thermistor is either open or shorted, replace it and reset the power.
OK
Check Point 3 :
Check Point 3 : Check voltage of Main PCB (DC5.0V)
Make sure circuit diagram of outdoor unit and check terminal voltage at Thermistor (DC5.0V)
THERMISTOR
(PIPE)
BLACK
1 1
BLACK
2 2
BLACK
BLACK
CN71
3 3
4 4
THERMISTOR
(DISCHARGE)
THERMISTOR
(OUTDOOR)
BLACK
BLACK
1 1
2 2 CN70
3 3
If the voltage does not appear, replace Main PCB.
02-14
Trouble shooting 13
Indicate or Display:
OUTDOOR UNIT Error Method:
Refer to error code table.
Current sensor error
Detective details:
Detective Actuators:
When Input Current Sensor has detected 0A, while Inverter Compressor is
operating at higher than 56rps, after 1minute upon starting the Compressor.
(Except during the defrost operation)
Outdoor unit Main PCB
Forecast of Cause :
1. Defective connection of electric components
2. External cause
3. Main PCB failure
Check Point 1-1 : Reset Power Supply and operate
Does Error indication show again?
NO
YES
Check Point 2 :
Check Point 1-2 :
Check connections of Outdoor Unit Electrical Components
Check external cause at Indoor and Outdoor
(Voltage drop or Noise)
Check if the terminal connection is loose.
Check if connector is removed.
Check erroneous connection.
Check if cable is open.
>>Upon correcting the removed connector or mis-wiring,
reset the power.
Instant drop : Check if there is a large load electric
apparatus in the same circuit.
Momentary power failure : Check if there is a defective
contact or leak current in the
power supply circuit.
Noise : Check if there is any equipment causing harmonic
wave near electric line.(Neon bulb or electric
equipment that may cause harmonic wave)
Check the complete insulation of grounding.
OK
Check Point 4 : Replace Main PCB
If Check Point 1, 2 do not improve the symptom, change Main PCB.
02-15
Trouble shooting 14
Indicate or Display:
OUTDOOR UNIT Error Method:
Refer to error code table.
Trip detection
Detective details:
Detective Actuators:
When more than normal operating current to IPM in Main PCB flows,
the compressor stops.
After the compressor restarts, if the same operation is repeated
within 40sec, the compressor stops again.
Outdoor unit Main PCB
Compressor
If
and
repeats 5 times, the compressor stops permanently.
Forecast of Cause :
1. Defective connection of electric components 2. Outdoor heat exchanger clogged 3. Compressor failure
4. Main PCB failure
Check Point 1 : Check connections of Outdoor unit electrical components
Check if the terminal connection is loose.
Check if connector is removed.
Check erroneous connection.
Check if cable is open.
>>Upon correcting the removed connector or mis-wiring, reset the power.
OK
Check Point 2 : Check Heat exchanger
Is there anything obstructing the air distribution circuit?
Is there any clogging of Outdoor Heat Exchanger?
OK
Check Point 3 : Check Compressor
Check Compressor. (PARTS INFORMATION 2)
OK
Check Point 4 : Replace Main PCB
If Check Point 1 ~ 3 do not improve the symptom, change Main PCB.
02-16
Trouble shooting 15
Indicate or Display:
OUTDOOR UNIT Error Method:
Refer to error code table.
Compressor rotor position
detection error
Detective details:
Detective Actuators:
If the detected rotor location is out of phase with actual rotor location
more than 90°, the compressor stops.
After the compressor restarts, if the same operation is repeated
within 40sec, the compressor stops again.
Outdoor unit Main PCB
Compressor
If
and
repeats 5 times, the compressor stops permanently.
Forecast of Cause :
1. Defective connection of electric components 2. Main PCB failure 3. Compressor failure
Check Point 1 : Check Noise from Compressor
Turn on Power and check operation noise.
If an abnormal noise show, replace Compressor.
OK
Check Point 2 : Check connection of around the Compressor components
For Compressor Terminal, Main PCB
Check if connector is removed.
Check erroneous connection.
Check if cable is open.
(Refer to PARTS INFORMATION 2)
>>Upon correcting the removed connector or mis-wiring, reset the power.
OK
Check Point 3: Replace Main PCB
If Check Point 1,2 do not improve the symptom, change Main PCB.
OK
Check Point 4: Replace Compressor
If Check Point 3 do not improve the symptom, change Compressor.
02-17
Trouble shooting 16
Indicate or Display:
OUTDOOR UNIT Error Method:
Refer to error code table.
Outdoor unit fan motor error
Detective details:
Detective Actuators:
When outdoor fan rotation speed is less than 100rpm in 20 seconds
after fan motor starts, fan motor stops.
After fan motor restarts, if the same operation within 60sec is repeated
3 times in a row, compressor and fan motor stops.
Outdoor unit Main PCB
Outdoor unit Fan motor
If
and
repeats 5 times in a row, compressor and fan motor stops
permanently.
Forecast of Cause:
1. Fan rotation failure 2. Motor protection by surrounding temperature rise 3. Main PCB failure
4. Outdoor unit fan motor
Check Point 1 : Check rotation of Fan
Rotate the fan by hand when operation is off.
(Check if fan is caught, dropped off or locked motor)
>>If Fan or Bearing is abnormal, replace it.
OK
Check Point 2 : Check ambient temp. around motor
Check excessively high temperature around the motor.
(If there is any surrounding equipment that causes heat)
>>Upon the temperature coming down, restart operation.
OK
Check Point 3 : Check Outdoor unit fan motor
Check Outdoor unit fan motor. (PARTS INFORMATION 5)
>>If Outdoor unit fan motor is abnormal, replace Outdoor unit fan motor.
OK
Check Point 4 : Check Output Voltage of Main PCB
Check outdoor unit circuit diagram and the voltage.
(Measure at Main PCB side connector)
RED
1
FAN MOTOR
2
3
BLACK
WHITE
YELLOW
BROWN or BLUE
CN800
4
5
6
7
FM
Read wire
Red - Black
White - Black
DC voltage
290V (AC115V-10%)~ 360V (AC115+10%)
15 1.5V
If the voltage is not correct, replace Main PCB.
02-18
Trouble shooting 17
Indicate or Display:
INDOOR UNIT Error Method:
Refer to error code table.
4-way valve error
Detective Actuators:
Detective details:
When the indoor heat exchanger temperature is compared with
the room temperature, and either following condition is detected
continuously two times, the compressor stops.
Indoor unit Controller PCB
Heat Ex. temperature thermistor
Room temperature thermistor
4-way valve
Cooling or Dry operation
[Indoor heat exchanger temp.] - [Room temp.] > 10degC (20°F)
Heating operation
[Indoor heat exchanger temp.] - [room temp.] < - 10degC (-20°F)
If the same operation is repeated 5 times,
the compressor stops permanently.
Forecast of Cause :
1. Connector connection failure 2. Thermistor failure 3. Coil failure 4. 4-way valve failure
5. Controller PCB failure
Check Point 1 : Check connection of Connector
Check if connector is removed.
Check erroneous connection.
Check if thermistor cable is open.
>> Upon correcting the removed connector or mis-wiring, reset the power.
OK
Check Point 2 : Check each thermistor
Isn’t it fallen off the holder?
Is there a cable pinched?
>> Check characteristics of thermistor (Refer to Trouble shooting 5, 6),
If defective, replace the thermistor
OK
Check Point 3 : Check the solenoid coil and 4-way valve
[ Solenoid coil ]
Remove CN30 from PCB and check the resistance value of coil.
Resistance value is 1.88k
2.29k (at 20°C (68°F)).
>> If it is Open or abnormal resistance value, replace Solenoid Coil.
[ 4-way valve ]
Check each piping temperature,
and the location of the valve by the temperature difference.
>> If the value location is not proper, replace 4-way valve.
OK
Check Point 4 : Replace Controller PCB
If Check Point 1- 3 do not improve the symptom, replace Controller PCB.
02-19
Trouble shooting 18
Indicate or Display:
OUTDOOR UNIT Error Method:
INDOOR UNIT
Discharge temperature error
Refer to error code table.
Detective details:
Detective Actuators:
"Protection stop by "discharge temperature
110degC during compressor
Outdoor unit Main PCB
operation"" generated 2 times within 24 hours.
Discharge temperature thermistor
Forecast of Cause :
1. 2/ 3-way valve not opened
2. Capillary tube, strainer clogged
3. Outdoor unit operation failure, foreign matter on heat exchanger
4. Discharge temperature thermistor failure
6. Main PCB failure
5. Insufficient refrigerant
<Cooling operation>
<Heating operation>
Check Point 1 : Check if 3-way valve(gas side) is open.
Check Point 1 : Check if 2-way valve(liquid side) is open.
If the 3-way valve(gas side) was closed, open the
3-way valve(gas side) and check operation.
If the 2-way valve(liquid side) was closed, open the
2-way valve(liquid side) and check operation.
OK
OK
Check Point 2 : Check the capillary tube, strainer
Check Point 2 : Check the capillary tube, strainer
Capillary tube, Strainer(after Capillary) clogging check.
Refer to "Service Parts Information 3".
Capillary tube, Strainer(before Capillary) clogging check.
Refer to "Service Parts Information 3".
OK
Check Point 3 : Check the outdoor unit fan,heat exchanger
OK
Check for foreign object at heat exchanger
Check if fan can be rotated by hand.
Motor check (PARTS INFORMATION 5)
OK
Check Point 4 : Check the discharge thermistor
Discharger thermistor characteristics check.
(Check by disconnecting thermistor from PCB.)
* For the characteristics of the thermistor, refer to the "Trouble shooting 10".
OK
Check Point 5 : Check the refrigerant amount
Leak check
02-20
2-3 TROUBLE SHOOTING WITH NO ERROR CODE
Forecast of Cause:
Trouble shooting 19
1. Power supply failure 2. External cause
3. Electrical components defective
Indoor Unit - No Power
Check Point 1 : Check Installation Condition
Isn’t the breaker down?
Check loose or removed connection cable.
>>If abnormal condition is found, correct it by referring
to Installation Manual or Data & Technical Manual.
OK
Check Point 2 : Check external cause at Indoor and Outdoor (Voltage drop or Noise)
Instant drop ----- Check if there is a large load electric apparatus in the same circuit.
Momentary power failure ----- Check if there is a defective contact or leak current in
the power supply circuit.
Noise ----- Check if there is any equipment causing harmonic wave near electric line.
(Neon bulb or electric equipment that may cause harmonic wave)
Check the complete insulation of grounding.
OK
Check Point 3 : Check Electrical Components
NO
Check the voltage of power supply.
>> Check if AC103 - 127V appears at Outdoor Unit Terminal L - N.
YES
Check Fuse in Main PCB.
>> If Fuse is open, check if the wiring between Terminal and Main PCB
is loose, and replace Fuse.
Check Varistor in Main PCB.
>> If Varistor is defective, there is a possibility of an abnormal power supply.
Check the correct power supply and replace Varistor.
Upon checking the normal power supply, replace Varistor.
02-21
Forecast of Cause:
Trouble shooting 20
1. Power supply failure 2. External cause
3. Electrical Components defective
Outdoor Unit - No Power
Check Point 1 : Check Installation Condition
Isn’t the breaker down?
Check loose or removed connection cable.
>>If abnormal condition is found, correct it by referring
to Installation Manual or Data & Technical Manual.
OK
Check Point 2 : Check external cause at Indoor and Outdoor (Voltage drop or Noise)
Instant drop ----- Check if there is a large load electric apparatus in the same circuit.
Momentary power failure ----- Check if there is a defective contact or leak current in the power supply circuit.
Noise ----- Check if there is any equipment causing harmonic wave near electric line.
(Neon bulb or electric equipment that may cause harmonic wave)
Check the complete insulation of grounding.
OK
Check Point 3 : Check Electrical Components
NO
Check the voltage of power supply.
>> Check if AC103 - 127V appears at Outdoor Unit Terminal L - N.
YES
Check Fuse in Main PCB.
>> If Fuse is open, check if the wiring between Terminal and Main PCB is loose,
and replace Fuse.
Check Varistor in Main PCB.
>> If Varistor is defective, there is a possibility of an abnormal power supply.
Check the correct power supply and replace Varistor.
Upon checking the normal power supply, replace Varistor.
OK
If the symptom does not change by above Check 3, replace Main PCB.
02-22
Forecast of Cause:
Trouble shooting 21
1. Setting/ Connection failure 2. External cause
3. Electrical component defective
No Operation (Power is ON)
Check Point 1 : Check indoor and outdoor installation condition
Are these Indoor Unit, Outdoor Unit, and Remote Control suitable model numbers to connect?
>> If there is some abnormal condition, correct it by referring to Installation manual and
Data & Technical Manual.
OK
Turn off Power and check/ correct followings.
Is there loose or removed communication line of Indoor Unit and Outdoor Unit?
OK
Check Point 2 : Check external cause at Indoor and Outdoor (Voltage drop or Noise)
Instant drop ----- Check if there is a large load electric apparatus in the same circuit.
Momentary power failure ----- Check if there is a defective contact or leak current in the power supply circuit.
Noise ----- Check if there is any equipment causing harmonic wave near electric line.
(Neon bulb or electric equipment that may cause harmonic wave)
Check the complete insulation of grounding.
OK
If the symptom does not change by above Check 1, 2, replace Main PCB.
02-23
Forecast of Cause:
Trouble shooting 22
1. Indoor Unit error 2. Outdoor unit error
3. Effect by surrounding environment
No Cooling / No Heating
4. Connection pipe / Connection wire failure 5. Refrigeration cycle failure
Check Point 1 : Check Indoor unit
Does Indoor unit Fan run on High fan?
Is Air filter dirty?
Is Heat exchanger clogged?
Check if Energy save function is operated.
OK
Check Point 2 : Check Outdoor unit operation
Check if Outdoor unit is operating
Check any objects that obstruct the air flow route.
Check clogged Heat Exchanger.
Is the Valve open?
OK
Attention
Check Point 3 : Check Site condition
Strainer normally does not have temperature difference
between inlet and outlet as shown in , but if there is a
difference like shown in , there is a possibility of inside
clogged. In this case, replace Strainer.
Is capacity of Indoor unit fitted to room size?
Any windows open? or direct sunlight ?
OK
Pipe (In)
Pipe (Out)
Check Point 4 :
Check Indoor/ Outdoor installation condition
Check connection pipe
(specified pipe length & Pipe diameter?)
Check any loose or removed communication line.
>> If there is an abnormal condition, correct it by
referring to Installation Manual or Data & Technical
Manual.
MPa MPa
OK
Pipe (In)
Pipe (Out)
Check Point 5 : Check Refrigeration cycle
Check if Strainer is clogged (Refer to the figure at right).
Measure Gas pressure and if there is a leakage, correct it.
>> When recharging the refrigerant, make sure to perform
vacuuming, and recharge the specified amount.
Check Capillary tube (PARTS INFORMATION 3)
Check Compressor (PARTS INFORMATION 1,2)
02-24
Forecast of Cause :
Trouble shooting 23
1. Abnormal installation (Indoor/ Outdoor)
2. Fan failure (Indoor/ Outdoor)
Abnormal Noise
3. Compressor failure (Outdoor)
Diagnosis method when abnormal noise is occurred
Abnormal noise is coming from Indoor unit.
(Check and correct followings)
Abnormal noise is coming from Outdoor unit.
(Check and correct followings)
Is Main unit installed in stable condition?
Is Fan guard installed normally?
Is Main unit installed in stable condition?
Is the installation of air suction grille and
front panel normal?
OK
OK
Is Fan broken or deformed?
Is the screw of Fan loose?
Is there any object which obstruct the Fan rotation?
Is Fan broken or deformed?
Is the screw of Fan loose?
OK
Is there any object which obstruct the Fan rotation?
Check if vibration noise by loose bolt or contact noise
of piping is happening.
OK
Is Compressor locked?
>> Check Compressor (PARTS INFORMATION 1,2)
Forecast of Cause:
1. Erroneous installation 2. Drain hose failure
Trouble shooting 24
Water Leaking
Diagnosis method when water is spitting out.
Is the filter clogged?
Diagnosis method when water leak occurs
Is Main unit installed in stable condition?
Is Main unit broken or deformed at the time of
transportation or maintenance?
OK
OK
MPa MPa
Check Gas pressure and correct it
if there was a gas leak.
Is Drain hose connection loose?
Is there a trap in Drain hose?
Is Drain hose clogged?
OK
Is Fan rotating?
02-25
2-4 SERVICE PARTS INFORMATION
SERVICE PARTS INFORMATION 1
Compressor
Diagnosis method of Compressor ( If Outdoor Unit LED displays Error, refer to Trouble shooting )
Abnormal noise
Stops soon after starting up
Does not start up
Check if vibration noise by
loose bolt or contact noise
of piping is happening.
Is there open or loose connection
cable?
Is there open or loose connection
cable?
Is Gas pipe valve open?
(Low pressure is too low)
Check Main PCB, connection of
Compressor, and winding resistance.
(Refer to the next page).
Defective Compressor
can be considered.
(due to inside dirt clogging
or broken component)
>> If there is no failure, the defect of
Compressor is considered (Locked
compressor due to clogged dirt or
less oil)
MPa MPa
Check if Refrigerant is leaking.
(Recharge Refrigerant)
Replace Compressor
Check if capillary tube, strainer is
clogged.
(PARTS INFORMATION 3)
Replace Compressor
Check Main PCB, connection of Compressor,and winding
resistance. (Refer to the next page).
>> If there is no failure, the defect of Compressor can be
considered. (Compression part broken or valve defective.)
Replace Compressor
02-26
SERVICE PARTS INFORMATION 2
Inverter Compressor
Check Point 1 : Check Connection
Check terminal connection of Compressor
(loose or incorrect wiring)
Terminal cover opened
C(W)
(BLACK)
S(V)
(WHITE)
R(U)
(RED)
Check Point 2 : Check Winding Resistance
Check winding resistance of each terminal
If the resistance value is 0 or infinite, replace Compressor.
C
Resistance Value :
1.3 at 20°C (68°F)
S
R
Check Point 3 : Replace Main PCB
If the symptom does not change with above Check 1, 2, replace Main PCB.
02-27
SERVICE PARTS INFORMATION 3
Outdoor unit Electronic Expansion Valve
( EEV )
Check Point 1 : Check Connections
Check connection of connector (CN40)
( Loose connector or open cable )
EXPANSION
VALVE COIL
RED
BLUE
ORANGE
YELLOW
WHITE
1 1
2 2
3 3
4 4
5 5
EV
CN40
Check Point 3 : Check Voltage from Main PCB.
Check Point 2 : Check Coil of EEV
DC
Remove connector, check each winding
resistance of Coil.
Remove Connector and check Voltage (DC12V)
If it does not appear, replace Main PCB.
Read wire
White - Red
Yellow - Red
Orange - Red
Blue - Red
Resistance value
Check Point 4 : Check Noise at start up
Turn on Power and check operation noise.
46
4
at 20°C
If an abnormal noise does not show,
replace Main PCB.
If Resistance value is abnormal, replace EEV.
Check Point 5 : Check Opening and Closing Operation of Valve
If it is open,
When Valve is closed,
it has no temp. difference between Inlet and Outlet.
it has a temp. difference between Inlet and Outlet.
CLOSE
Example : Hot Gas
OPEN
Example : Hot Gas
Pipe (In)
Pipe (In)
Hi TEMP.
Hi TEMP.
Pipe (Out)
Hi TEMP.
Pipe (Out)
Normal TEMP.
Check Point 6 : Check Strainer
Strainer normally does not have temperature difference between inlet and outlet as shown in
,
but if there is a difference as shown in
, there is a possibility of inside clogged. In this case, replace Strainer.
Pipe (In)
Pipe (Out)
Pipe (In)
Pipe (Out)
02-28
SERVICE PARTS INFORMATION 4
Indoor unit fan motor
Check Point 1 : Check rotation of Fan
Rotate the fan by hand when operation is off.
(Check if fan is caught, dropped off or locked motor)
>>If Fan or Bearing is abnormal, replace it.
Check Point 2 : Check resistance of Indoor Fan Motor
Refer to below. Circuit-test "Vm" and "GND" terminal.
(Vm: DC voltage, GND: Earth terminal)
>>If they are short-circuited (below 300 k ), replace Indoor fan motor and Controller PCB.
Terminal function
(symbol)
Pin number
(wire color)
1 (Blue)
2 (Yellow)
3 (White)
4 (Black)
5
Feed back (FG)
Speed command (Vsp)
Control voltage (Vcc)
Earth terminal (GND)
No function
6 (Red)
DC voltage (Vm)
SERVICE PARTS INFORMATION 5
Outdoor unit fan motor
Check Point 1 : Check rotation of Fan
Rotate the fan by hand when operation is off.
(Check if fan is caught, dropped off or locked motor)
>>If Fan or Bearing is abnormal, replace it.
Check Point 2 : Check resistance of Outdoor Fan Motor
Refer to below. Circuit-test "Vm" and "GND" terminal.
(Vm: DC voltage, GND: Earth terminal)
>>If they are short-circuited (below 300 k ), replace Outdoor fan motor and Main PCB.
Terminal function
(symbol)
Pin number
(wire color)
1 (Red)
DC voltage (Vm)
No function
2
3
No function
4 (Black)
5 (White)
6 (Yellow)
Earth terminal (GND)
Control voltage (Vcc)
Speed command (Vsp)
7 (Brown or Blue) Feed back (FG)
02-29
WALL MOUNTED type
INVERTER
3 . APPENDING DATA
3-1. FUNCTION SETTING
3-1-1 INDOOR UNIT
Follow the instructions in the Local Setup Procedure, which is supplied with the remote control,
in accordance with the installed condition.
After the power is turned on, perform the Function Setting on the remote control.
The settings may be selected between the following two: Function Number or Setting Value.
Settings will not be changed if invalid numbers or setting values are selected.
1-1. Setting the Filter Sign
The indoor unit has a sign to inform the user that it is time to clean the filter.
Select the time setting for the filter sign display interval in the table
below according to the amount of dust or debris in the room.
If you do not wish the filter sign to be displayed, select the setting value for "No indication".
(
Factory setting)
Setting Description
Standard (400 hours)
Long interval (1000 hours)
Short interval ( 200 hours)
No indication
Function Number
Setting Value
00
01
02
03
11
1-2. Cooling Room Temperature Correction
Depending on the installed environment, the room temperature sensor may require a correction.
The settings may be selected as shown in the table below.
(
Factory setting)
Setting Description
Standard
Function Number
Setting Value
00
01
02
03
Slightly lower control
Lower control
30
Warmer control
1-3. Heating Room Temperature Correction
Depending on the installed environment, the room temperature sensor may require a correction.
The settings may be selected as shown in the table below.
(
Factory setting)
Setting Description
Standard
Function Number
Setting Value
00
01
02
03
Lower control
31
Slightly warmer control
Warmer control
03-01
1-4. Setting the Auto Restart
Enable or disable automatic system restart after a power outage.
(
Factory setting)
Setting Description
Function Number
Setting Value
Yes
No
00
01
40
*Auto restart is an emergency function such as for power failure etc.
Do not start and stop the indoor unit by this function in normal operation.
Be sure to operate by the control unit, or external input device.
1-5. Remote controller signal code
Change the indoor unit Signal Code, depending on the remote controllers.
(
Factory setting)
Setting Description
Function Number
Setting Value
A
B
C
D
00
01
02
03
44
03-02
3-1-2 Procedures to change the Function Setting for wireless RC
The function settings of the control of the indoor unit can be changed by this procedure according
to the installation conditions. Incorrect settings can cause the indoor unit malfunction.
After the power is turned on, perform the "FUNCTION SETTING" according to the installation
conditions using the remote controller.
The settings may be selected between the following two: Function Number or Setting Value.
Settings will not be changed if invalid numbers or setting values are selected.
PREPARATION
Turn on the power
*By turning on the power indoor units, so make sure the piping air-tight test and vacuuming
have been conducted before turning on the power.
*Also check again to make sure no wiring mistakes were made before turning on the power.
FUNCTION SETTING METHOD (for Wireless remote controller)
Entering the Function Setting Mode
While pressing the FAN button and SET TEMP.( ) button simultaneously,
press the RESET button to enter the function setting mode.
STEP 1.
Setting the Remote controller Signal Code
Use the following steps to select the signal code of the remote controller.
(Note that the air conditioner cannot receive a signal code if the air conditioner
has not been set for the signal code.)
The signal code that is set through this process are applicable only to
the signal in the FUNCTION SETTING.
For details on how to set the signal code through the normal process,
refer to SELECTING THE REMOTE CONTROLLER SIGNAL CODE.
(1) Press the SET TEMP.( ) ( ) button to change the signal code
between
Match the code on the display to the air conditioner signal code.
(inituially set to
.
)
(If the signal code does not need to be selected, press the MODE button and
proceed to STEP 2.)
(2) Press the MODE button to accept the signal code, and proceed to STEP 2.
*1
The air conditioner signal code is set to prior to shipment.
Contact your retailer to change the signal code.
The remote controller resets to signal code when the batteries in the remote controller are replaced.
If you use a signal code other than signal code , reset the signal code after replacing the batteries.
If you do not know the air conditioner signal code setting, try each of the signal codes (
until you find the code which operates the air conditioner.
)
Note :
*1) Small " " is displayed on the right of the signal code during the FUNCTION SETTING.
03-03
STEP 2.
Selecting the Function Number and Setting Value
(1) Press the SET TEMP.( ) ( ) buttons to select the function number.
(Press the MODE button to switch between the left and right digits.)
(2) Press the FAN button to proceed to setting the value.
(Press the FAN button again to return to the function number selection.)
(3) Press the SET TEMP.( ) ( ) buttons to select the setting value.
(Press the MODE button to switch between the left and right digits.)
Function
Number
Setting Value
*1
*1
(4) Press the SLEEP button, then after you hear the beep emitted from
the indoor unit, press the START/STOP button to confirm the settings.
(5) Press the RESET button to cancel the function setting mode.
(6) After completing the FUNCTION SETTING, be sure to turn off the
power and turn it on again.
CAUTION
After turning off the power, wait 10 seconds or more before turning on it again.
The FUNCTION SETTING doesn't become effective if it doesn't do so.
Note :
*1) Small " " is displayed on the right of the signal code during the FUNCTION SETTING.
03-04
REMOTE CONTROLLER SIGNAL CODE SETTING
Use the following steps to select the signal code of the remote controller.
(Note that the air conditioner cannot receive a signal code if the air conditioner
has not been set for the signal code.)
(1) Press the MODE button for at least 5 seconds to display the current signal code.
(initially set to ).
(2) Press the SET TEMP.( ) ( ) button to change the signal code
between
.
Match the code on the display to the air conditioner signal code.
(3) Press the MODE button again. The signal code will be changed.
If no buttons are pressed within 30 seconds after the signal code is displayed,
the display returns to the original status. In this case, start again from step 1.
The air conditioner signal code is set to prior to shipment.
Contact your retailer to change the signal code.
The remote controller resets to signal code when the batteries in the remote controller are replaced.
If you use a signal code other than signal code , reset the signal code after replacing the batteries.
If you do not know the air conditioner signal code setting, try each of the signal codes (
until you find the code which operates the air conditioner.
)
03-05
3-2. Thermistor Resistance Values
3-2-1 INDOOR UNIT
Indoor heat exchanger thermistor
Room temperature thermistor
Resistance(k
)
Voltage(V)
Resistance(k
)
Voltage(V)
Temp ( C)
Temp ( C)
-10.0
-5.0
0.0
55.46
42.36
32.67
25.39
19.91
15.71
12.5
10.0
8.051
6.52
0.76
0.95
1.17
1.41
1.67
1.94
2.22
2.50
2.77
3.03
3.26
3.48
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
977.6
713.2
526.8
392.1
295.1
223.3
170.7
131.4
102.1
79.81
62.9
49.84
39.78
31.92
25.8
20.94
17.11
14.05
11.6
0.24
0.33
0.43
0.56
0.72
0.91
1.13
1.38
1.64
1.92
2.21
2.50
2.78
3.05
3.30
3.52
3.72
3.90
4.06
4.14
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
63.0
5.316
4.354
10.36
3-2-2 OUTDOOR UNIT
Outdoor heat exchanger thermistor
Outdoor temperature thermistor
Discharge thermistor
Resistance(k
)
Voltage(V)
Resistance(k
)
Voltage(V)
Resistance(k
)
Voltage(V)
Temp ( C)
Temp ( C)
Temp ( C)
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
920.3
676.6
503.5
377.6
286.3
218.6
168.6
130.9
102.5
80.82
64.22
51.36
41.33
33.64
27.26
22.33
18.40
15.23
12.68
10.60
8.909
7.518
6.375
5.427
4.639
3.981
3.430
2.965
2.573
2.239
1.956
0.07
0.09
0.13
0.17
0.22
0.28
0.36
0.45
0.56
0.69
0.84
1.01
1.20
1.39
1.61
1.84
2.07
2.30
2.53
2.75
2.97
3.17
3.35
3.53
3.69
3.83
3.96
4.07
4.17
4.27
4.35
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
87.21
64.16
47.78
35.86
27.21
20.80
16.05
12.47
9.775
7.709
6.129
4.903
3.947
3.196
2.606
2.135
1.759
1.457
1.213
1.015
0.8531
0.7206
0.6115
0.26
0.34
0.45
0.58
0.74
0.93
1.14
1.38
1.64
1.91
2.18
2.46
2.73
2.99
3.23
3.45
3.65
3.83
3.98
4.12
4.24
4.34
4.43
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
205.7
148.8
109.0
80.56
60.23
45.40
34.57
26.53
20.56
16.04
12.26
10.00
7.978
6.408
5.184
4.216
3.451
2.841
0.78
1.02
1.30
1.61
1.94
2.29
2.63
2.95
3.25
3.52
3.79
3.96
4.14
4.28
4.40
4.50
4.59
4.65
0.0
5.0
0.0
5.0
0.0
5.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
75.0
80.0
85.0
90.0
95.0
100.0
105.0
110.0
115.0
120.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
60.0
65.0
70.0
75.0
80.0
10.0
15.0
20.0
25.0
30.0
35.0
40.0
45.0
50.0
55.0
03-06
1116,Suenaga,Takatsu-ku,Kawasaki 213-8502,Japan
Mar. 2012 Printed in Japan
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