Fujitsu AS* A09LEC, AS* A12LEC, AO* R09LECN, AO* R12LECN Service Instruction

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SPLIT TYPE ROOM AIR CONDITIONER

WALL MOUNTED

type

Models Indoor unit Outdoor unit

AS* A09LEC AS* A12LEC

AO* R09LECN AO* R12LECN

INVERTER

SERVICE

INSTRUCTION

R410A

CONTENTS

1. DESCRIPTION OF EACH CONTROL OPERATION

1. COOLING OPERATION................................................................................................

3. DRY OPERATION.........................................................................................................

2. HEATING OPERATION.................................................................................................

5. INDOOR FAN CONTROL..............................................................................................

4. AUTO CHANGEOVER OPERATION............................................................................

7. LOUVER CONTROL.....................................................................................................

6. OUTDOOR FAN CONTROL..........................................................................................

9. TIMER OPERATION CONTROL...................................................................................

8. COMPRESSOR CONTROL..........................................................................................

11. TEST OPERATION CONTROL...................................................................................

10. ELECTRONIC EXPANSION VALVE CONTROL........................................................

13. FOUR-WAY VALVE EXTENSION SELECT................................................................

12. PREVENT TO RESTART FOR 3 MINUTES (3 MINUTES ST)...................................

15. MANUAL AUTO OPERATION (Indoor unit body operation).......................................

14. AUTO RESTART.........................................................................................................

16. FORCED COOLING OPERATION..............................................................................

18. COIL DRY OPEARTION CONTROL...........................................................................

17. COMPRESSOR PREHEATING..................................................................................

21. BASE HEATER OPERATION......................................................................................

01-01

01-02

01-03

01-04

01-05

01-07

01-08

01-09

01-10

01-13

01-14

01-15

22. DEFROST OPERATION CONTROL...........................................................................

24. VARIOUS PROTECTIONS..........................................................................................

23. OFF DEFROST OPERATION CONTROL...................................................................

01-16

01-18

01-19

01-13

2. TROUBLE SHOOTING

2-1 ERROR DISPLAY.......................................................................................................

2-1-1 INDOOR UNIT AND WIRED RMOTE CONTROLLER DISPLAY (OPTION)......

3. APPENDING DATA

2-1-2 WIRED REMOTE CONTROLLER DISPLAY (OPTION).....................................

2-2 TROUBLE SHOOTING WITH ERROR CODE............................................................

2-3 TROUBLE SHOOTING WITH NO ERROR CODE......................................................

02-01

02-02

02-03

02-24

2-4 SERVICE PARTS INFORMATION.............................................................................. 02-29

19. 10°C HEAT OPERATION............................................................................................

20. ECONOMY OPERATION............................................................................................

3-1 FUNCTION SETTING.................................................................................................

3-1-1 INDOOR UNIT....................................................................................................

3-1-2 Procedures to change the Function Setting for wireless RC..............................

03-01

03-03

3-2 Thermistor Resistance Values.................................................................................... 03-05

1 . DESCRIPTION OF EACH CONTROL OPERATION

R410A

WALL MOUNTED type

INVERTER

( Fig. 1 : Limit of maximum speed based on outdoor temperature )

1. COOLING OPERATION

1-1 COOLING CAPACITY CONTROL

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 speed of the compressor. * If the room temperature is 2°C higher than a set temperature, the compressor operation speed will attain to maximum performance.

Minimum

speed

Maximum

speed

Maximum

speed

ASYA09LEC 18rps 62rps 64rps

ASYA12LEC 18rps 80rps 96rps

When outdoor temperature drops

36°C

A zone

34°C

32°C

B zone

30°C

21°C

C zone

19°C

D zone

Hi Me Lo Quiet

A zone 64rps 50rps 42rps 30rps

B zone 64rps 50rps 42rps 30rps

C zone 64rps 50rps 42rps 30rps

09LEC

D zone 42rps 35rps 30rps 23rps

A zone 96rps 61rps 51rps 33rps

B zone 96rps 61rps 51rps 33rps

C zone 96rps 61rps 51rps 33rps

12LEC

D zone 57rps 42rps 36rps 27rps

( Table 1 : Compressor speed range )

When the compressor operates for 30 minutes continuously at over the maximum speed , the maximum speed is changed from Maximum speed to Maximum speed .

01-01

* When the room temperature is between +2°C to -2.5°C of the setting temperature, the compressor speed is controlled within the range shown in Table1. However, the maximum speed is limited in the range shown in Figure 1 based on the fan speed mode and the outdoor temperature.

* If the room temperature is 2.5°C lower than a set temperature, the compressor will be stopped.

10°C

E zone

F zone

0°C

12°C

2°C

When outdoor temperature rises

F zone

E zone

F zone

E zone

52rps 45rps 40rps 29rps

57rps 42rps 36rps 27rps

2. HEATING OPERATION

2-1 HEATING CAPACITY CONTROL

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 speed of the compressor. * If the room temperature is lower by 3°C than a set temperature, the compressor operation speed will attain to maximum performance.

* If the room temperature is higher 2.5°C than a set temperatire, the compressor will be stopped.

* When the room temperature is between +2.5°C to -3°C of the setting temperature, the compressor speed is controlled within the range shown in Table2. However, the maximum speed is limited in the range shown in Figure 2 based on the fan speed mode and the outdoor temperature.

( Table 2 : Compressor speed range )

( Fig.2 : Limit of maximum speed based on outdoor temperature )

* The room temperature is controlled 2°C higher than the setting temperature for 60 minutes after starting the operation. After 60 minutes, it is controlled based on the normal setting temperature.

01-02

Minimum

speed

Maximum

speed

ASYA09LEC 18rps 119rps

ASYA12LEC

18rps 119rps

Hi Me+ Lo Quiet

AA zone

119rps 119rps 64rps 55rps

A zone

119rps 119rps 64rps 55rps

B zone

119rps 119rps 64rps 45rps

09LEC

C zone

AA zone

A zone

B zone

C zone

119rps 119rps 64rps 37rps

119rps 119rps 80rps 68rps

119rps 119rps 80rps 54rps

119rps 119rps

85rps

96rps

96rps 80rps 45rps

12LEC

17°C

C zone

B zone

A zone

AA zone

19°C

12°C

14°C

5°C

7°C

When outdoor temperature rises

When outdoor temperature drops

3. DRY OPERATION

3-1 INDOOR UNIT CONTROL

The compressor rotation 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 3. However, after the compressor is driven, the indoor unit shall run at operation frequency of 52rps (for ASYA09LEC) or 61rps (for ASYA12LEC) , for a minute.

Ts+0.5°C

Ts -1.5°C

Ts -0.5°C

Ts+1.5°C

( Table 3 : Compressor frequency )

( Fig.3 : Compressor control based on room temperature )

01-03

Operating

speed

30rps

23rps

0rps

09LEC

X zone

J zone

Y zone

Operating

speed

J zone

Y zone

X zone

33rps

25rps

0rps

12LEC

Room Room temperature drops temperature rises

X zone

J zone

Y zone

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 and 30°C in 1°C steps.

When operation starts, only the indoor and outdoor fans are operated for 1 minute. After 1 minute,

the room temperature and outdoor temperature are sensed and the operation mode is selected in accordance with the table below.

C zone

32°C

B zone

-10°C

A zone

( Table.4 Operation mode selection table)

Outdoor temperature (TO)

Indoor room temperature (TB)

A zone B zone C zone

TB > TS+2°C

Monitoring

Cooling

(automatic dry)

Cooling

(automatic dry)

TS+2°C

TB TS - 2°C

Monitoring Monitoring Monitoring

TB TS- 2°C Heating Heating Monitoring

When COOLING was selected at , the air conditioner operates as follow:

The same operation as COOLING OPERATION of item 1 above is performed.

When the room temperature has remained at (set temperature -1°C) for 8 minutes, operation is

automatically switched to DRY and the same operation as DRY OPERATION of item 3 above is performed.

If the room temperature reaches (set temperature +2°C during DRY operation, operation returns to COOLING operation.

When HEATING was selected at , the same operation as HEATING OPERATION of item 2 above is performed.

When the compressor was stopped for 6 consecutive minutes by the temperature control function after the COOLING or HEATING operation mode was selected at above, operation is switched to MONITORING and the operation mode is selected again.

( Fig.4 : Outdoor temperature zone selection )

01-04

5. INDOOR FAN CONTROL

The airflow can be switched in 5 steps such as AUTO, QUIET, LOW, MED, HIGH, while the indoor fan only runs. When Fan mode is set at (Auto), it operates on (MED) Fan Speed.

01-05

1. FAN SPEED

2. FAN OPERATION

( Table 5 : Indoor fan speed )

ASYA09/12LEC

Operation mode Air flow mode Speed (rpm)

1440 1370 1200

980

Cooling

700 600 480

1440

Me+

Heating

1200

920

Quiet

680

Dry

S-Lo

X zone: 680

J zone: 650

Cool air prevention

3. COOLING OPERATION

Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature, as shown in Figure 5. On the other hand, if switched in [HIGH] [QUIET], the indoor motor will run at a constant airflow of [COOL] operation modes QUIET, LOW, MED, HIGH,as shown in Table 5.

( Fig.5 : Airflow change - over ( Cooling : AUTO ) )

When the room temperature rises

When the room temperature drops

TR : Room temperature Ts : Setting temperature

TR-Ts > 2 degC

1 degC > TR-Ts

2 degC > TR-Ts > 1 degC

TR-Ts > 2.5 degC

1.5 degC > TR-Ts

2.5 degC > TR-Ts > 1.5 degC =

HIGH mode

MED mode

LOW mode

4. DRY OPERATION

Refer to the Table 5. During the dry mode operation, the fan speed setting can not be changed.

5. HEATING OPERATION

Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature, as shown in Figure 6. 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, Hi, as shown in Table 5.

( Fig.6 : Airflow change - over ( Heating : AUTO ) )

TR-Ts > - 1.5 degC

- 2.5 degC > TR-Ts

- 1.5 degC > TR-Ts > - 2.5 degC =

TR-Ts > - 1 degC

- 2 degC > TR-Ts

- 1 degC > TR-Ts > - 2 degC =

When the room temperature rises

When the room temperature drops

TR : Room temperature Ts : Setting temperature

Me+

Indoor heat exchanger temperature rises

Indoor heat exchanger temperature drops

The maximum value of the indoor fan speed is set as shown in Figure 7, based on the detected temperature by the indoor heat exchanger sensor on heating mode.

(Fig.7 : Cool air prevention control)

01-06

6. COOL AIR PREVENTION CONTROL (Heating mode)

7. ECONOMY FAN CONTROL (Dry mode)

47°C

40°C

37°C

Cool air prevention

30°C

S-Lo

40°C

28°C

32°C

35°C

Lower of "Hi" and "setting fan speed"

Lower of "Me+" and "setting fan speed"

Lower of "Lo" and "setting fan speed"

Indoor heat exchanger temperature rises

Indoor heat exchanger temperature drops

47°C

40°C

35°C

Lower of "Hi" and "setting fan speed"

Lower of "Me+" and "setting fan speed"

Lower of "Lo" and "setting fan speed"

Switch the airflow [AUTO] at dry mode, and the indoor fan motor will run as shown in Figure8.

(Table 6 : Indoor fan speed )

( Fig.8 : Indoor fan control )

Compressor

OFF

Indoor fan (as shown in Table 6)

S-Lo

OFF

10 30 60 180 60 180 60 10 30

(SEC)

X zone J zone

ASYA09LEC 680rpm 650rpm

ASYA12LEC 680rpm 650rpm

6. OUTDOOR FAN CONTROL

01-07

( Table8 : Outdoor fan speed )

The outdoor fan speed mentioned above 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 table9 without relating to the compressor frequency.

( Table9 : Outdoor fan speed after the defrost )

1. Outdoor Fan Motor

2. Fan Speed

AC Motor DC Motor

ASYA09/ 12LEC

Following table shows the type of the outdoor fan motor. The control method is different between AC motor and DC motor.

( Table7 : Type of Motor )

ASYA09LEC 850rpm

Cooling Heating

ASYA09LEC

ASYA12LEC

Zone

850/ 750/ 670/ 500

850/ 750/ 680/ 550/ 450

900/ 750/ 680/ 550/ 450

Refer to Fig.9

(rpm)

400/ 280

G 250/ 200

400/ 280

250/ 200

400/ 280

850/ 750/ 670/ 500

250/ 200

Dry

760/ 470

400/ 280

250/ 200

760/ 470

ASYA12LEC 900rpm

( Fig.9 : Outside air temperature zone selection )

12°C

0°C

Outside air temperature rises

Outside air temperature drops

F zone

D zone

G zone

2°C

10°C

7. LOUVER CONTROL

1. VERTICAL LOUVER CONTROL

2. SWING OPERATION

Each time the button is pressed, the air direction range will change as follow:

Cooling / Dry mode Heating mode Fan mode

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

When the temperature of the air being blown out is low at the start of heating operation or during defrosting, the airflow direction temporarily becomes to prevent cold air being blown onto the body.

During use of the Cooling and Dry modes, do not set the Air Flow Direction Louver in the Heating

range (

) for long period of time, since water vapor many condense near the outlet louvers and drop of water may drip from the air conditioner. During the Cooling and Dry modes, if the Air Flow Direction Louvers are left in the heating range for more than 30minutes, they will automatically return to position

During Monitor operation in AUTO CHANGEOVER mode, the airflow direction automatically

becomes , and it cannot be adjusted.

Cooling mode / Dry mode / Fan mode( ) Heating mode / Fan mode( )

(Function Range)

(Fig 10: Air Direction Range)

(Operation Range)

When the swing signal is received from the remote controller, the vertical louver starts to swing.

(Swinging Range)

When the indoor fan is either at S-lo or Stop mode, the swinging operation is interrrupted and the louver stops at the memorized position.

01-08

8. COMPRESSOR CONTROL

1. OPERATION SPEED RANGE

The operation speed of the compressor is different based on the operation mode as shown in the table 10.

Cooling DryHeating

Minimum Maximum Minimum Maximum Minimum Maximum

ASYA09LEC

ASYA12LEC

18rps 64rps 18rps 119rps

18rps 96rps 18rps

23rps

25rps

30rps

33rps119rps

(Table 10 : Compressor operation speed range)

2. OPERATION SPEED CONTROL AT START UP

The compressor speed soon after the start-up is controlled as shown in the figure 11.

(Fig.11 : Compressor control at start-up)

80sec

60sec 60sec 180sec

60sec

56rps

74rps

87rps

108rps

119rps

97rps

01-09

Time

9. TIMER OPEARTION CONTROL

1. OPEARTION FREQUENCY RANGE

The table 11 shows the available timer setting based on the product model.

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

(Table 11 : Timer setting)

01-10

The program timer allows the OFF timer and ON timer to be used in combination one time.

Operation mode

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.

2. PROGRAM TIMER

Stop mode

Operation mode

Set time Set time Set time Set time

ON TIMER / OFF TIMER PROGRAM TIMER SLEEP TIMER

ASYA09/12LEC

9-1 WIRELESS REMOTE CONTROLLER

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.

Set temperature rises

( Ts : Set temperature )

Stop of operation

Set temperature lowers

( Ts : Set temperature )

Stop of operation

In the cooling operation mode

When the sleep timer is set, the setting temperature is increased 1°C. It increases the setting temperature another 1°C after 1 hour. After that, the setting temperature is not changed and the operation is stopped at the time of timer setting.

+1°C

+2°C

Set

60min

In the heating operation mode

When the sleep timer is set, the setting temperature is decreased 1°C. It decreases the setting temperature another 1°C every 30 minutes. Upon lowering 4°C, the setting temperature is not changed and the operation stops at the time of timer setting.

- 4°C

- 3°C

- 2°C

- 1°C

Set

30min

01-11

01-12

9-2 WIRED REMOTE CONTROLLER (OPTION)

The table12 shows the available timer setting based on the product model.

ON TIMER / OFF TIMER WEEKLY TIMER TEMPERATURE SET BACK TIMER

ASYA09/ 12LEC

( Table12 : Timer Setting )

1. ON TIMER / OFF TIMER

Same to 9-1 1.ON TIMER / OFF TIMER and shown in those.

2. WEEKLY TIMER

This timer function can set operation times of the each day of the week. All days can be set together,the weekly timer can be used to repeat the timer setting for all of the days.

3. TEMPERATURE SET BACK TIMER

This timer function can change setting temperature of setting operation times of the each day of the week. This can be together with other timer setting.

Normal tmp.

OFF

Setting day Setting day Setting day

ON OFF ON OFF ON OFF

Set time Set time

Set back tmp.

Set time Set time

10. ELECTRONIC EXPANSION VALVE CONTROL

The most proper opening of the electronic expansion valve is calculated and controlled under the present operating condition based on the following values. The compressor frequency, the temperatures detected by the discharge temperature sensor, the indoor heat exchanger sensor, the outdoor heat exchanger sensor, and the outdoor temperature sensor.

The pulse range of the electronic expansion valve control is between 60 to 480 pulses.

The expansion valve is set at 480 pulses after 110 seconds of stopping compressor.

At the time of supplying the power to the outdoor unit, the initialization of the electronic expansion valve is operated (528 pulses are input to the closing direction).

11. TEST OPERATION CONTROL

The compressor won't enter operation status for 2 minutes and 20 seconds after the compressor is stopped, even if any operation is given.

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.

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 timer time Set air flow Direction Swing

12. PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST )

13. FOUR-WAY VALVE EXTENSION SELECT

14. AUTO RESTART

01-13

Econmy

[ Wireless remote controller ]

Under the condition where the air conditioner runs, press the test run button of the remote control, and the test operation control mode will appear. During test running, the operation lamp and timer lamp of the air conditioner body twinkle simultaneously.

[ Wired remote controller (Option) ]

If the operation lamp is on, press the Start/Stop button to turn it off. Press the Master Control and Fan Control buttons at the same time for more than two seconds to start the test operation. The operation lamp will light up and "o1" will be displayed on the set temperature display.

[ Release ]

Perform the test operation for 60 minutes. Pressing the Start/Stop button will stop the test operation.

15. MANUAL AUTO OPERATION (Indoor unit body operation)

ASYA09LEC

ASYA12LEC

780rpm 35rps

780rpm 39rps

17. COMPRESSOR PREHEATING

18. COIL DRY OPERATION CONTROL

The coil-dry operation functions by pressing COIL DRY button on the remote controller. The coil-dry operation is consisted of Fan operation 50 minutes, Heating operation 3 minutes, and Fan operates for 30 minutes at last before ending the air conditioner operation.

(Table 15 : COIL-DRY Operating Functions)

Indoor Fan Speed

Compressor Frequency

Louver Position

01-14

16. FORCED COOLING OPERATION

Forced cooling operation is started when pressing MANUAL AUTO button for 10 seconds or more. During the forced cooling operation, it operates regardless of room temperature sensor. Operation LED and timer LED blink during the forced cooling operation. They blink for 1 second ON and 1 second OFF on both operation LED and timer LED (same as test run operation). Forced cooling operation is released after 60 minutes of starting operation. The FORCED COOLING OPERATION will start as shown in Table14.

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 or greater, preheating is ended.

( Fig. 12 : Outdoor heat exchanger temperature )

5°C

7°C

OFF

If MANUAL AUTO Button is set, the operation is controlled as shown in Table13. If the remote control is lost or battery power dissipated, this function will work without the remote control.

OPERATION MODE Auto changeover FAN CONT. MODE Auto TIMER MODE Continuous (No timer setting available) SETTING TEMP. 24°C SETTING LOUVER Standard SWING OFF

(Table 13)

Manual auto operation

OPERATION MODE FAN CONT. MODE TIMER MODE SETTING TEMP. SETTING LOUVER SWING

( Table 14)

Forced cooling operation Cooling Hi

Horizontal OFF

Room Temp is not controlled

01-15

19. 10°C HEAT OPERATION

The 10°C HEAT operation functions by pressing 10°C HEAT button on the remote controller. The 10°C HEAT operation is almost the same operation as below settings.

Mode Heating

Setting temperature 10°C

Fan mode AUTO

( Table16 )

20. ECONOMY OPERATION

The ECONOMY operation functions by pressing ECONOMY button on the remote controller. The ECONOMY operation is almost the same operation as below settings.

Mode Cooling/ Dry Heating

Target temperature Setting temp.+1°C Setting temp.-1°C

( Table17 )

21. BASE HEATER OPERATION

The base heater is operated as shown in Figure 13.

( Fig.13 : Base heater control )

2°C

5°C

OFF

When outdoor temperature drops

When outdoor temperature rises

When the compressor stops, Base heater is OFF. When the outdoor fan motor stops, Base heater is OFF. In the cooling mode, Base heater is OFF. In the defrost operation, Base heater maintains the same status as before the compressor stops.

22. DEFROST OPERATION CONTROL

01-16

1. CONDITION OF STARTING THE DEFROST OPERATION

The defrost operation starts when the outdoor heat exchanger temperature sensor (Tn) detects the temperature lower than the values shown in Table18.

2. CONDITION OF THE DEFROST OPERATION COMPLETION

Defrost operation is released when the conditions become as shown in Table19.

( Table19 : Defrost Release Condition )

Release Condition

Outdoor heat exchanger temperature sensor value is higher than +16°C or Compressor operation time has passed 15 minutes.

( Table 18 : Condition of starting Defrost Operation )

1 time defrosting after starting operation

Defrosting after 2 time upon starting operation

Compressor integrating operation time

Less than 20 min. 20 to 60 min. More than 60 min.

Does not operate

- 9°C - 5°C

Less than 35 min. More than 35min.

Does not operate

Integrating defrost (Constant monitoring)

More than 240 min. (For long continuous operation)

Less than 10min.*1 (For intermittent operation)

- 3°C

More than 213 min. (For long continuous operation)

- 5°C

OFF count of the compressor 40 times.

*1 : If the compressor continuous operation time is less than 10 minutes, the OFF number of the compressor is counted. If any defrost operated, the compressor OFF count is cleared.

Tn-Tn10 < - 5deg Tn-Tnb < - 2deg However, Tn < - 6°C

Tn10 : Temperature of continuous operation at 10minutes. Tnb : Back 5minutes temperature

01-17

Compressor OFF Outdoor fan motor OFF 50 sec later four - way valve OFF 55 sec later compressor ON Base heater maintains the same status as before the compressor stops.

3. Defrost Flow Chart

The defrosting shall proceed by the integrating operation time, outdoor temperature and outdoor heat exchanger temperature as follows.

(Not defrosted for 10 minutes)

Heating operation start : Compressor ON

Outdoor heat exchanger temperature:

Over +16°C

Compressor ON time: Maximum 15 minutes

Defrost end

Compressor integrating operation: Over 20 min.

Outdoor heat exchanger temperature: Below - 9°C

Outdoor heat exchanger temperature: Below - 5°C

Compressor integrating operation: Over 35 min.

2nd and later defrost

Integrating defrost

(Constant monitoring)

Defrost Indicator: [Operation lamp] 7 sec ON / 2 sec OFF

Defrost start

Tn-Tn10 < - 5deg Tn-Tnb < - 2deg However, Tn <- 6°C

Compressor OFF count : 40 times (Less than 10min.)

1st defrost

Compressor integrating operation: Over 60 min.

Compressor integrating operation: Over 240 min.

Outdoor heat exchanger temperature: Below - 3°C

Compressor integrating operation: Over 213 min.

Outdoor heat exchanger temperature: Below - 5°C

23. OFF DEFROST OPEARTION CONTROL

1. OFF DEFROST OPERATION CONDITION

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.

In heating operation, the outdoor heat exchanger temperature is less than -4°C, and compressor operation integrating time lasts for more than 30 minutes.

OFF Defrost Flow Chart

Heating operation stop

Outdoor heat exchanger temperature : Below -4°C 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

Compressor ON time : Maximum 15 minutes

Defrost end

2. OFF DEFROST END CONDITION

Release Condition

Outdoor heat exchanger temperature sensor value is higher than +16°C or Compressor operation time has passed 15 minutes.

01-18

24. VARIOUS PROTECTIONS

1. DISCHARGE GAS TEMPERATURE OVERRISE PREVENSION CONTROL

The discharge discharge thermistor will detect discharge gas temperature.

ASYA09/12LEC

104°C 101°C 110°C

1-1. When the discharge temperature becomes higher than Temperature , the compressor speed is decreased 20rps, and it continues to decrease the speed for 20rps every 120seconds until the temperature becomes lower than Temperature .

When the discharge temperature becomes lower than Temperature , the protection control of the compressor speed is released. However, if this protection repeats and the instruction speed of the compressor falls below 18rps, the compressor will be stopped.

1-2. When the discharge temperature becomes higher than Temperature , the compressor is stopped. If the above protection stop repeats 2 times, system will be stopped permanently, and the indoor unit LED starts error indication.

(Table 20 : Discharge Temperature Over Rise Prevension Control / Release Temperature)

Temperature

2. CURRENT RELEASE CONTROL

The compressor speed is controlled so that the outdoor unit input current does not exceeds the current limit velue that was set up with the outdoor temperature. The compressor speed returns to the designated speed of the indoor unit at the time when the speed becomes lower than the release value.

(Table 21 : Current Release Operation Value / Release Value)

01-19

[ Cooling ]

ASYA09LEC

OT (Control / Release)

3.5A / 3.0A

4.0A / 3.5A

5.5A / 5.0A

46°C

42°C

ASYA12LEC

OT (Control / Release)

6.5A / 6.0A

8.0A / 7.5A

8.5A / 8.0A

9.5A / 9.0A

17°C

12°C

5°C

[ Heating ]

OT : Outdoor Temperature OT : Outdoor Temperature

ASYA09LEC

OT (Control / Release)

6.5A / 6.0A

8.0A / 7.5A

17°C

12°C

5°C

ASYA12LEC

OT (Control / Release)

4.0A / 3.5A

5.0A / 4.5A

6.5A / 6.0A

46°C

42°C

3. ANTIFREEZING CONTROL (Cooling and Dry mode)

The compressor speed is decreased on cooling & dry mode when the indoor heat exchanger temperature sensor detects the temperature lower than 4°C . Then, the anti-freezing control is released when it becomes higher than Release temperature A.

(Table 22 : Anti-freezing protection operation / Release temperature)

4. COOLING PRESSURE OVERRISE PROTECTION

When the outdoor unit heat exchange sensor temperature rises to 67°C or greater, the compressor is stopped. Then the compressor will be restarted after 3 minutes ST.

5. HIGH TEMPERATURE RELEASE CONTROL ( HEATING MODE )

In heating mode, the compressor speed is controlled based on the detection value of the indoor heat exchanger temperature sensor.

01-20

Outdoor temperature zone

A, B , C, D

7°C

13°C

Release temperature A

E, F

Indoor heat exchange temperature rises

Indoor heat exchange temperature drops

[ Control System ]

It returns to the normal operation

53°C

50°C

The compressor speed is decreased 3rps every 60seconds.

5-1. HIGH TEMPERATURE RELEASE CONTROL of Outdoor Unit

Indoor heat exchange temperature rises

Indoor heat exchange temperature drops

[ Control System ]

It returns to the normal operation

55°C

52°C

5-2. HIGH TEMPERATURE RELEASE CONTROL of Indoor Unit

Refer to below

Compressor operation 57rps or more 55rps

35 ~ 55rps Rotational speed down every 120 sec 28 ~ 33rps 23rps 18 ~ 23rps OFF

[ ASYA09LEC ]

Compressor operation 48rps or more 45rps

39 ~ 45rps Rotational speed down every 120 sec 27 ~ 36rps 25rps 18 ~ 25rps OFF

[ ASYA12LEC ]

2 . TROUBLE SHOOTING

R410A

WALL MOUNTED type

INVERTER

2. TROUBLE SHOOTING

02-01

2-1 ERROR DISPLAY

2-1-1 INDOOR UNIT AND WIRED REMOTE CONTROLLER DISPLAY

1. ERROR DISPLAY Please refer the blinking pattern as follows.

Indoor Unit : AS*A09LEC, AS*A12LEC

The OPERATION, TIMER lamps operate as follows according to the error contents.

0.5s ON / 0.5s OFF (Flash) : OFF

Error contents

Indoor Unit display

Operation

(Green)

Coil Dry (Yellow)

Timer

(Orange)

Trouble

shooting

Serial error (Serial reverse transfer error)

Serial error (Serial forward transfer error)

Wired remote controller error

2 times 3 times

4 times 5 times

Room temperature thermistor error 2 times

8 times

Indoor heat exchanger temperature thermistor (Middle) error

2 times

3 times

Outdoor discharge pipe temperature thermistor error 2 times

Outdoor heat exchanger temperature thermistor error 3 times

Outdoor temperature thermistor error 4 times

3 times

Manual auto switch error

Main relay welded error

2 times

4 times

Over current protection

2 times

CT error

3 times

Compressor location ditection error

5 times

Outdoor unit fan error

5 times

6 times

Indoor fan motor lock error

6 times

2 times

Indoor fan motor rev. error

3 times

Discharge temperature error

2 times

Exessive high pressure protection on cooling

3 times

7 times

8 times

Model distinction error (Indoor)

0.1s ON / 0.1s OFF (Flash)

Power supply frequency detection error

3 times

Wired Remote

Controller

Display (option)

No Display

4 times

No Display

4-way valve error

PFC circuit error

4 times

02-02

When "EE" in Temperature Display is displayed, inspection of the air conditioning system is necessary. Please consult authoilzed service personnel.

2-1-2 WIRED REMOTE CONTROLLER DISPLAY (OPTION)

1. SELF - DIAGNOSIS

SU MOTUWETH FR SA

Unit number (usually 0)

Error code

ex. Self-diagnosis check

2. ERROR CODE HISTORY DISPLAY

Up to 16 memorized error codes may be displayed for the indoor unit connected to the remote controller.

1. Stop the air conditioner operation.

2. Press the SET TEMPERATURE buttons , simultaneously for 3 seconds or more to start the self-diagnosis.

4. Press the SET TEMPERATURE buttons , simultaneously for 3 seconds or more or there is no key input for 60 seconds to stop the display.

3. Press the SET TEMPERATURE button to select the error history number.

SU MOTU WETH FR SA

Error code

Error history number

01234 567 FEdcbA98

Lower

Raise

Trouble shooting 1 OUTDOOR UNIT Error Method:

Detective Actuators: Detective details:

Forecast of Cause:

Indicate or Display:

Refer to error code table.

YESYES

Serial Error (Serial Reverse Transfer Error)

Outdoor unit Main PCB Outdoor unit Fan motor

1. Connection failure 2. External cause 3. Main PCB failure 4. Outdoor unit Fan motor failure

Check Point 1-1 : Reset the power and operate

Does error indication reappear?

Check Point 1-2 : Check external cause such as noise

Check if the ground connection is proper. 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 Point 2 : Check connection

Check any loose or removed connection line of between indoor unit and outdoor unit.

>> If there is an abnormal condition, correct it by referring to Installation Manual or Data & Technical Manual.

Check connection condition in control unit. (If there is loose connector, open cable or mis-wiring)

Check Point 3 : Check the voltage of power supply

Check the voltage of power supply

>> Check if AC198(AC220V-10%) - 264V(AC240V+10%) appears at outdoor unit terminal L - N.

Check Point 4 : Check serial signal (Reverse transfer signal)

Check serial signal (Reverse transfer signal)

>> Check if indicated value swings between AC70V and AC130V at outdoor unit terminal N - 3. >> If it is abnormal, check Outdoor unit fan motor. (PARTS INFORMATION 5) >> If Outdoor unit fan motor is abnormal, replace Outdoor unit fan motor and Main PCB. >> If Outdoor unit fan motor is normal, replace Main PCB.

When the indoor unit cannot properly receive the serial signal from outdoor unit for 10 seconds or more.

02-03

WHITE

BLACK

2-2 TROUBLE SHOOTING WITH ERROR CODE

RED

Trouble shooting 2 INDOOR UNIT Error Method:

Detective Actuators: Detective details:

Forecast of Cause:

Indicate or Display:

Refer to error code table.

YESYES

Serial Error (Serial Forward Transfer Error)

Indoor unit Controller PCB Outdoor unit Main PCB

1. Connection failure 2. External cause 3. Controller PCB failure 4. Outdoor unit Main PCB

Check Point 1-1 : Reset the power and operate

Does error indication reappear?

Check Point 1-2 : Check external cause such as noise

Check if the ground connection is proper. 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 Point 2 : Check connection

Check any loose or removed connection line of between indoor unit and outdoor unit.

>> If there is an abnormal condition, correct it by referring to Installation Manual or Data & Technical Manual.

Check connection condition in control unit. (If there is loose connector, open cable or mis-wiring)

Check Point 3 : Check the voltage of power supply

Check the voltage of power supply

>> Check if AC198(AC220V-10%) - 264V(AC240V+10%) appears at outdoor unit terminal L - N.

Check Point 4 : Check serial signal (Forward transfer signal)

Check serial signal (Forward transfer signal)

>> Check if indicated value swings between AC70V and AC130V at outdoor unit terminal N - 3. >> If it is abnormal, replace Controller PCB. >> If it is abnormal, replace Outdoor unit Main PCB.

When the indoor unit cannot properly receive the serial signal from outdoor unit for 10 seconds or more.

02-04

WHITE

BLACK

RED

Trouble shooting 3 INDOOR UNIT Error Method:

Detective Actuators: Detective details:

Forecast of Cause:

Check Point 2 : Check Wired Remote Controller and Controller PCB

Check Point 1 : Check the connection of terminal

OKOK

Indicate or Display:

Wired Remote Controller Error

Indoor unit Controller PCB Wired Remote Controller (Option)

1. Connection failure 2. Wired Remote Controller failure 3. Controller PCB failure

Check & correct the followings. Check the connection of terminal between Wired Remote Controller and indoor unit, and check if there is a disconnection of the cable.

Check Voltage at CN305 (terminal 1-3) of UTY-XCBXE (Communication kit). (Power supply to Remote Control)

When the indoor unit cannot properly receive the signal from Wired Remote Controller for 1 minute or more.

02-05

Refer to error code table.

>> If it is DC13V, Remote Control is failure. (Controller PCB is normal) >> Replace Remote Control >> If it is DC 0V, Controller PCB is failure. (Check Remote Control once again) >> Replace Controller PCB

Trouble shooting 4 INDOOR UNIT Error Method:

Indicate or Display:

Detective Actuators: Detective details:

Forecast of Cause :

Check Point 2 : Remove connector and check thermistor resistance value

Check Point 1 : Check connection of connector

Check Point 3 : Check voltage of Controller PCB (DC5.0V)

6.5

8.0

10.012.515.820.225.933.6Resistance value (k )

25201510

58.2

-10 5

44.0

-5 0Temperature (°C )

4.35.3Resistance value (k )

4540Temperature (°C )

Room Temperature Thermistor Error

Indoor unit Controller PCB Room temperature thermistor

When Room Temperature Thermistor open or short-circuit is detected at power ON.

1. Connector connection failure 2.Thermistor failure 3. Controller PCB failure

Check if connector is removed. Check if connector is erroneous connection. Check if thermistor cable is open.

>> Upon correcting the removed connector or mis-wiring, reset the power.

Thermistor characteristics (Approx. value)

If Thermistor is either open or shorted, replace it and reset the power.

Make sure circuit diagram of indoor unit and check terminal voltage at thermistor (DC5.0V)

If the voltage does not appear, replace Controller PCB and execute the check operation again.

02-06

Refer to error code table.

CN4

THERMISTOR ( ROOM TEMP. )

THERMISTOR ( PIPE TEMP. )

BLACK

Trouble shooting 5 INDOOR UNIT Error Method:

Indicate or Display:

Detective Actuators: Detective details:

Forecast of Cause :

Check Point 2 : Remove connector and check thermistor resistance value

Check Point 1 : Check connection of connector

31.7

39.6

49.762.980.3103.3134.2176.0

Resistance value (k )

252015105

233.2

-5 0

Temperature (°C )

17.120.825.6

Resistance value (k )

14.1

11.6

9.7

654540

Temperature (°C )

Indoor Heat Exchanger Temperature Thermistor (Middle) Error

Indoor unit Controller PCB

Heat exchanger (MID) thermistor

When Heat exchanger (MID) thermistor open or short-circuit is detected at power ON.

1. Connector connection failure 2.Thermistor failure 3. Controller PCB failure

Check if connector is removed. Check if connector is erroneous connection. Check if thermistor cable is open.

>> Upon correcting the removed connector or mis-wiring, reset the power.

Thermistor characteristics (Approx. value)

If Thermistor is either open or shorted, replace it and reset the power.

02-07

Refer to error code table.

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)

CN4

THERMISTOR ( ROOM TEMP. )

THERMISTOR ( PIPE TEMP. )

BLACK

If the voltage does not appear, replace Controller PCB and execute the check operation again.

Trouble shooting 6 OUTDOOR UNIT Error Method:

Indicate or Display:

Detective Actuators: Detective details:

Forecast of Cause :

OKOK

17.826.3

40.0

62.5

-30

1013.1

-20

531.6

-10

292.9-5221.1 79.1100.9129.8168.6Resistance value (k )

151050Temperature (°C )

12.3

30 5040 60

2.03.44.66.3

8.7

Resistance value (k )

120100908070Temperature (°C )

Outdoor Discharge Pipe Temperature Thermistor Error

Outdoor unit Main PCB Discharge pipe temperature thermistor

When Discharge pipe temperature thermistor open or short-circuit is detected at power ON or while running the compressor.

1. Connector connection failure 2. Thermistor failure 3. Main PCB failure

Check Point 1 : Check connection of connector

Check if connector is removed. Check if connector is erroneous connection. Check if thermistor cable is open.

>> Upon correcting the removed connector or mis-wiring, reset the power.

Check Point 2 : Remove connector and check thermistor resistance value

Thermistor characteristics (Approx. value)

If Thermistor is either open or shorted, replace it and reset the power.

Check Point 3 : Check voltage of Inverter PCB (DC5.0V)

Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor (DC5.0V)

If the voltage does not appear, replace Main PCB.

02-08

Refer to error code table.

CN71

CN70

THERMISTOR ( DISCHARGE PIPE )

THERMISTOR ( HEAT EXCHANGER )

THERMISTOR ( OUTDOOR TEMP. )

1 2 3

BLACK

Trouble shooting 7 OUTDOOR UNIT Error Method:

Indicate or Display:

Detective Actuators: Detective details:

Forecast of Cause :

OKOK

4.8

6.07.69.616.121.027.8Resistance value (k )

100-5-10

95.6

-30

50.3

-20Temperature (°C )

Outdoor Heat Exchanger Temperature Thermistor Error

Outdoor unit Main PCB

Heat exchanger temperature thermistor

When Heat exchanger temperature thermistor open or short-circuit is detected at power ON or while running the compressor.

1. Connector connection failure 2. Thermistor failure 3. Inverter PCB failure

Check Point 1 : Check connection of connector

Check if connector is removed. Check if connector is erroneous connection. Check if thermistor cable is open.

>> Upon correcting the removed connector or mis-wiring, reset the power.

Check Point 2 : Remove connector and check thermistor resistance value

Thermistor characteristics (Approx. value)

If Thermistor is either open or shorted, replace it and reset the power.

02-09

Refer to error code table.

12.4

Resistance value (k )

Temperature (°C )

3.8303.1352.5402.1451.7501.2600.8700.6

Check Point 3 : Check voltage of Inverter PCB (DC5.0V)

Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor (DC5.0V)

If the voltage does not appear, replace Main PCB.

CN71

CN70

THERMISTOR ( DISCHARGE PIPE )

THERMISTOR ( HEAT EXCHANGER )

THERMISTOR ( OUTDOOR TEMP. )

1 2 3

BLACK

Trouble shooting 8 OUTDOOR UNIT Error Method:

Indicate or Display:

Detective Actuators: Detective details:

Forecast of Cause :

OKOK

16.1

20.726.935.246.662.3115.2Resistance value (k )

0-5-10-20

224.3

-30Temperature (°C )

10 15

1.62.43.55.28.0Resistance value (k )

1.2

8060504030

12.6

20Temperature (°C )

Outdoor Temperature Thermistor Error

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.

1. Connector connection failure 2. Thermistor failure 3. Inverter PCB failure

Check Point 1 : Check connection of connector

Check if connector is removed. Check if connector is erroneous connection. Check if thermistor cable is open.

>> Upon correcting the removed connector or mis-wiring, reset the power.

Check Point 2 : Remove connector and check thermistor resistance value

Thermistor characteristics (Approx. value)

If Thermistor is either open or shorted, replace it and reset the power.

02-10

Refer to error code table.

Check Point 3 : Check voltage of Inverter PCB (DC5.0V)

Make sure circuit diagram of outdoor unit and check terminal voltage at thermistor (DC5.0V)

If the voltage does not appear, replace Main PCB.

CN71

CN70

THERMISTOR ( DISCHARGE PIPE )

THERMISTOR ( HEAT EXCHANGER )

THERMISTOR ( OUTDOOR TEMP. )

2 3

1 2 3

BLACK

02-11

Trouble shooting 9 INDOOR UNIT Error Method:

Indicate or Display:

Detective Actuators: Detective details:

Forecast of Cause :

OKOK

Manual Auto Switch Error

Indoor unit Controller PCB Indicator PCB Manual Auto Switch

When the Manual Auto Switch becomes ON for consecutive 10 or more seconds.

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.

Check Point 2 : Replace Inverter PCB

If Check Point 1 do not improve the symptom, replace Controller PCB and Indicator PCB and execute the check operation again.

Refer to error code table.

Trouble shooting 10

INDOOR UNIT

OUTDOOR UNIT Error Method:

Indicate or Display:

Detective Actuators:

Detective details:

Forecast of Cause :

Main relay welded error

Outdoor unit Main PCB Indoor unit Controller PCB Power code assy*1

When the signal from the outdoor unit is input after 2min.20sec. from the time of operation stop under the Main relay is OFF condition.

1. Power code assy*1 2. Main PCB failure 3. Controller PCB failure

02-12

Check Point 1 : Replace Main PCB

Change Main PCB.

Refer to error code table.

OKOK

Check Point 2 : Replace Controller PCB

If Check Point 1 do not improve the symptom, replace Controller PCB.

OKOK

Check Point 3 : Replace Power code assy*1

If Check Point 2 do not improve the symptom, replace Power code assy.

*1: Power code assy consists of Terminal, Relay, Thermal fuse, and Power code.

Trouble shooting 11 INDOOR UNIT Error Method:

Detective Actuators: Detective details:

Forecast of Cause:

Indicate or Display:

Refer to error code table.

YESYES

Power Supply Frequency Detection Error

Indoor unit Controller PCB

1. Connection failure 2. External cause 3. Controller PCB failure

Check Point 1-1 : Reset the power supply and operate

Does error indication reappear?

Check Point 2 : Check connection

Check any loose or removed connection line of between indoor unit and outdoor unit.

>> If there is an abnormal condition, correct it by referring to Installation Manual or Data & Technical Manual.

Check connection condition in control unit. (If there is loose connector, open cable or mis-wiring.)

Check Point 3 : Check the voltage of power supply

Check the voltage of power supply

>> Check if AC198(AC220V-10%) - 264V(AC240V+10%) appears at outdoor unit terminal L - N.

When power frequency is not detected by 4 seconds after power-on.

02-13

Check Point 4 : Replace Controller PCB

If Check Point 1 ~ 3 do not improve the symptom, replace Controller PCB.

Check Point 1-2 : Check external cause such as noise

Check if the ground connection is proper. 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).

Trouble shooting 12 OUTDOOR UNIT Error Method:

Detective Actuators: Detective details:

Forecast of Cause :

Indicate or Display:

Check Point 4 : Replace Main PCB

OKOK

Check Point 1 : Check connections condition in control unit

Over Current Protection

Outdoor unit Main PCB Compressor

1. Connection failure 2. Outdoor fan operation failure 3. Outdoor heat exchanger clogged

4. Compressor failure 5. Main PCB failure

Check if the terminal connection is loose. Check if connector is removed. Check if connector is erroneous connection. Check if cable is open.

>> Upon correcting the removed connector or mis-wiring, reset the power.

If Check Point 1 ~ 3 do not improve the symptom, replace Main

PCB.

When over current flows in Inverter PCB, the compressor stops. After the compressor restarts, if the same error is repeated within 40sec, the compressor stops reappear. If and repeats 5 times, the compressor stops permanently.

02-14

Refer to error code table.

Check Point 5 : Replace Compressor

If Check Point 4 do not improve the symptom, replace Compressor.

Check Point 2 : Check Outdoor heat exchanger

Is there any obstructing the air flow route? Is there any clogging of outdoor unit heat exchanger?

>> If clogged, clear the clog.

Check Point 3 : Check Outdoor fan

Check Outdoor fan motor. (Refer to Trouble shooting 15)

>> If the Fan motor is failure, replace it.

Trouble shooting 13 OUTDOOR UNIT Error Method:

Detective Actuators: Detective details:

Forecast of Cause :

Check Point 3 : Replace Main PCB

YES

Indicate or Display:

CT Error

Outdoor unit Main PCB

Check Point 2 : Check connections condition in control unit

Check if the terminal connection is loose. Check if connector is removed. Check if connector is erroneous connection. Check if cable is open.

>> Upon correcting the removed connector or mis-wiring, reset the power.

1. Connection failure 2. External cause 3. Main PCB failure

Check Point 1-1 : Reset power supply and operate

Does error indication reappear?

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)

02-15

Refer to error code table.

Check Point 1-2 : Check external cause such as noise

Check if the ground connection is proper. 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).

If Check Point 1 ~ 2 do not improve the symptom, replace Main PCB.

Trouble shooting 14 OUTDOOR UNIT Error Method:

Compressor Location Detection Error

02-16

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 2 : Check connection of around the Compressor components

OKOK

Check Point 3: Replace Main PCB

Outdoor unit Main PCB Compressor

1. Defective connection of electric components 2. Main PCB failure 3. Compressor failure

If Check Point 1,2 do not improve the symptom, replace Main PCB.

Check if connector is removed. Check erroneous connection. Check if cable is open.

>>Upon correcting the removed connector or mis-wiring, reset the power.

(Refer to PARTS INFORMATION 2)

For Compressor Terminal, Main PCB

While running the compressor, 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. If and repeats 5 times, the compressor stops permanently.

Check Point 1 : Check Noise from Compressor

Turn on Power and check operation noise.

If an abnormal noise show, replace Compressor.

OKOK

Check Point 4: Replace Compressor

If Check Point 3 do not improve the symptom, replace Compressor.

OKOK

Indicate or Display:

Refer to error code table.

02-17

Trouble shooting 15 OUTDOOR UNIT Error Method:

Detective Actuators:

Detective details:

Forecast of Cause:

Check Point 3 : Check Outdoor unit fan motor

Outdoor Unit Fan Error

Outdoor unit Main PCB Outdoor unit fan motor

1. Fan rotation failure 2. Motor protection by surrounding temperature rise 3. Main PCB failure

4. Outdoor 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.

Check Outdoor unit fan motor. (PARTS INFORMATION 5) >>If Outdoor Fan Motor is abnormal, replace Outdoor fan motor and Main PCB.

Check Point 4 : Check Output Voltage of Main PCB

Check outdoor unit circuit diagram and the voltage. (Measure at Main PCB side connector)

If the voltage is not correct, replace Main PCB.

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. If and repeats 5 times in a row, compressor and fan motor stops permanently.

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.

Indicate or Display:

Refer to error code table.

Read wire DC voltage

Red - Black

280V 10%

White - Black

15 1.5V

CN800

1 2 3 4 5 6 7

BLACK WHITE YELLOW BROWN

RED

FAN MOTOR

02-18

Trouble shooting 16 INDOOR UNIT Error Method:

Indicate or Display:

Indoor Fan Motor Lock Error Indoor Fan Motor Rev. Error

Refer to error code table.

Detective Actuators:

Detective details:

Forecast of Cause:

Check Point 1 : Check rotation of Fan

Check Point 2 : Check ambient temp. around motor

Indoor unit Controller PCB Indoor unit fan motor

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

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 excessively high temperature around the motor. (If there is any surrounding equipment that causes heat)

>>Upon the temperature coming down, restart operation.

When the condition that actual frequency of Indoor Fan is below 1/3 of target frequency or 0rps is continued more than 56 seconds.

Check Point 4 : Replace Controller PCB

If Check Point 1- 3 do not improve the symptom, replace Controller PCB.

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.

Discharge temperature thermistor Outdoor unit Main PCB

"Protection stop by "discharge temperature 110degC during compressor operation"" generated 2 times within 24 hours.

Check Point 1 : Check if 3-way valve(gas side) is open.

Discharger thermistor characteristics check (Check by disconnecting thermistor from PCB.)

* For the characteristics of the thermistor, refer to the "Trouble shooting 6".

Check Point 4 : Check the discharge thermistor

EEV open?

Strainer clogging check (Refer to PARTS INFORMATION 3)

Check Point 3 : Check the outdoor unit fan,heat exchanger

Check for foreign object at heat exchanger

Check if fan can be rotated by hand.

Motor check (PARTS INFORMATION 5)

Check Point 2 : Check the EEV, strainer

Check Point 5 : Check the refrigerant amount

Leak check

EEV open?

Strainer clogging check (Refer to PARTS INFORMATION 3)

Check Point 2 : Check the EEV, strainer

If the 3-way valve(gas side) was closed, open the 3-way valve(gas side) and check operation.

02-19

Check Point 1 : Check if 3-way valve(liquid side) is open.

If the 3-way valve(liquid side) was closed, open the 3-way valve(liquid side) and check operation.

1. 3-way valve not opened 2. EEV defective, strainer clogged

3. Outdoor unit operation failure, foreign matter on heat exchanger

4. Discharge temperature thermistor failure 5. Insufficient refrigerant

6. Main PCB failure

Detective Actuators:

Detective details:

Forecast of Cause :

Trouble shooting 17 OUTDOOR UNIT Error Method:

Discharge Temperature Error

Indicate or Display:

Refer to error code table.

Check Point 6 : Replace Main PCB

If Check Point 1- 5 do not improve the symptom, replace Main PCB.

Trouble shooting 18 OUTDOOR UNIT Error Method:

Detective Actuators: Detective details:

Forecast of Cause :

Check Point 3 : Check Outdoor Fan

Indicate or Display:

OKOK

Check Point 1 : Check connections condition in control unit

Excessive High Pressure Protection On Cooling

1. Connection failure 2. Outdoor fan operation failure

3. Outdoor heat exchanger clogged 4. Thermistor failure 5. EEV failure 6. Main PCB failure

Check if the terminal connection is loose. Check if connector is removed. Check if connector is erroneous connection. Check if cable is open.

>> Upon correcting the removed connector or mis-wiring, reset the power.

Check Point 2 : Check Outdoor Heat Exchanger

Is there any obstructing the air flow route? Is there any clogging of outdoor unit heat exchanger? >> If clogged, clear the cloge it.

Check Outdoor fan motor. (Refer to Trouble shooting 15)

>> If the Fan Motor is failure, replace it.

Check Thermistor. (Refer to Trouble shooting 7) >> If the Thermistor is failure, replace it.

Check Point 5 : Check EEV

Check Point 4 : Check Thermistor

Check EEV. (PARTS INFORMATION 3)

>> If the EEV is failure, replace it.

In cooling operation, after 1 minute or more compressor starts, when outdoor heat exchanger temperature is 67 °C and above.

02-20

Check Point 6 : Replace Main PCB

OKOK

If Check Point 1 ~ 5 do not improve the symptom, replace Main PCB.

Outdoor unit Main PCB Outdoor unit fan motor Heat exchanger temp. thermistor Outdoor unit EEV

Refer to error code table.

Forecast of Cause :

OKOK

When the indoor heat exchanger temperature is compared with the room temperature, and either following condition is detected continuously two times, the compressor stops.

1. Connector connection failure 2. Thermistor failure 3. Coil failure 4. 4-way valve failure

5. 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.

Check Point 3 : Check the solenoid coil and 4-way valve

Remove CN30 from PCB and check the resistance value of coil. Resistance value is about 1.4k .

>>If it is Open or abnormal resistance value, replace Solenoid Coil.

02-21

Cooling or Dry operation [Indoor heat exchanger temp.] - [Room temp.] > 10degC

Heating operation [indoor heat exchanger temp.] - [room temp.] < -10degC

If the same operation is repeated 5 times, the compressor stops permanently.

[ Solenoid coil ]

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.

[ 4-way valve ]

OKOK

Check Point 4 : Replace Main PCB

If Check Point 1- 3 do not improve the symptom, replace Main PCB.

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 4, 5), If defective, replace the thermistor.

Trouble shooting 19 OUTDOOR UNIT Error Method:

Detective Actuators: Detective details:

Indicate or Display:

4-way valve error

Outdoor unit Main PCB Heat exchanger temperature thermistor Room temperature thermistor 4-way valve

Refer to error code table.

Forecast of Cause :

OKOK

1. External cause 2. Connector connection failure 3. Main PCB failure

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.

Check Point 3 : Replace Main PCB

If Check Point 1, 2 do not improve the symptom, replace Main PCB.

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.

02-22

When inverter output DC voltage is higher than 415V for over 3 seconds, the compressor stops. If the same operation is repeated 5 times, the compressor stops permanently.

Trouble shooting 20 OUTDOOR UNIT Error Method:

Detective Actuators: Detective details:

Indicate or Display:

PFC circuit error

Outdoor unit Main PCB

Refer to error code table.

Detective Actuators: Detective details:

Forecast of Cause:

Check Point 3 : Replace Controller PCB

Check Point 2 : Check indoor unit electric components

YESYES

Trouble shooting 21 INDOOR UNIT Error Method:

Indicate or Display:

Model Distinction Error (Indoor)

Indoor unit Controller PCB

1. External cause 2. Defective for connection of electric components 3. Controller PCB failure

Check Point 1-1 : Reset power supply and operate

Does error indication show reappear?

Check all connectors. (loose connector or incorrect wiring) Check any shortage or corrosion on PCB.

If Check Point 1, 2 do not improve the symptom, replace Controller PCB.

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

02-23

Refer to error code table.

Check Point 1-2 : Check external cause such as noise

Check if the ground connection is proper. 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).

Trouble shooting 22

Forecast of Cause:

OKOK

Indoor Unit - No Power

1. Power supply failure 2. External cause

3. Electrical components defective

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.

Check Point 2 : Check external cause at indoor unit and outdoor unit(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.

Check Point 3 : Check electrical components

02-24

2-3 TROUBLE SHOOTING WITH NO ERROR CODE

Check the voltage of power supply.

>> Check if AC198(AC220V-10%) - 264V(AC240V+10%) appears at indoor unit Terminal L - N (Power supply).

Check Fuse on Controller PCB (F1).

>> If Fuse is open, check loose terminal, and replace Fuse.

Check Varistor on Controller PCB (VA1).

>> If Varistor is defective, there is a possibility of an abnormal power supply. Check the correct power voltage.

Trouble shooting 23

Forecast of Cause:

OKOK

Outdoor Unit - No Power

1. Power supply failure 2. External cause

3. Electrical components defective

Check Point 3 : Check electrical components

If Check Point 1 ~ 3 do not improve the symptom, replace Main PCB,

02-25

Check the voltage of power supply.

>> Check if AC198(AC220V-10%) - 264V(AC240V+10%) appears at outdoor unit terminal L - N.

Check Fuse(F201) on terminal board.

>> If Fuse is open, check loose terminal, and replace Fuse.

Check Varistor on Main PCB (VA1 - 2).

>> If Varistor is defective, there is a possibility of an abnormal power supply. Check the correct power voltage.

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.

Check Point 2 : Check external cause at indoor unit and outdoor unit(Voltage drop or noise)

Instant drop ----- Check if there is a large load electric apparatus in the same circuit.

Trouble shooting 24

Forecast of Cause:

Check Point 2 : Check external cause at Indoor and Outdoor (Voltage drop or Noise)

Check Point 1 : Check indoor and outdoor installation condition

Check Point 3 : Check Wired Remote Controller and Controller PCB

OKOK

No Operation (Power is ON)

1. Setting/ Connection failure 2. External cause

3. Electrical Component defective

Indoor unit - Check incorrect wiring between Indoor unit - Remote control. Or, check if there is an open cable connection. 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.

Turn off Power and check/ correct followings.

Is there loose or removed communication line of Indoor unit and Outdoor unit?

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.

>> If the symptom does not change by above Check 1, 2, 3, replace Main PCB of Outdoor unit.

02-26

Check Voltage at CN305 (terminal 1-3) of UTY-XCBXE (Communication kit). (Power supply to Remote Control)

Attention

Trouble shooting 25

Forecast of Cause:

Check Point 2 : Check outdoor unit operation

Check Point 1 : Check indoor unit

Check Point 3 : Check site condition

Check Point 5 : Check refrigeration cycle

Check Point 4 : Check indoor unit / outdoor unit installation condition

Pipe (In) Pipe (Out)

OKOK

No Cooling / No Heating

1. Indoor unit error 2. Outdoor unit error

3. Effect by surrounding environment

4. Connection pipe / Connection wire failure 5. Refrigeration cycle failure

6. Heater Unit failure

Does indoor unit Fan run on high fan? Is Air Filter dirty? Is Heat Exchanger clogged? Check if energy save function is operated.

Is outdoor unit is operating? (If not, refer to Trouble shooting 23) Is there any obstructing the air flow route? Is there any clogging on outdoor unit Hert Exchanger? Is the valve open?

Is capacity of indoor unit fitted to room size? Any windows open? Or direct sunlight?

Check connection pipe. (Specified pipe length and 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.

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 EEV (PARTS INFORMATION 3) Check Compressor (PARTS INFORMATION 1,2) Check Heater Unit (PARTS INFORMATION 6)

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.

02-27

MPa MPa

Trouble shooting 26

Forecast of Cause :

Trouble shooting 27

Forecast of Cause:

Abnormal Noise

1. Abnormal installation(Indoor unit / outdoor unit)

2. Fan failure(Indoor unit / outdoor unit)

3. Compressor failure (Outdoor unit)

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 Fan broken or deformed? Is the screw of Fan loose? Is there any object which obstruct the Fan rotation?

Is main unit installed in stable condition? Is the installation of air suction grille and front panel normal?

Is Fan broken or deformed? Is the screw of Fan loose? Is there any object which obstruct the Fan rotation?

Is main unit installed in stable condition? Is Fan Guard installed normally?

Check if vibration noise by loose bolt or contact noise of piping is happening.

Is Compressor locked? >> Check Compressor

Water Leaking

Diagnosis method when water is spitting out.

Is the filter clogged?

Check gas pressure and correct it if there was a gas leak.

Diagnosis method when water leak occurs

Is Drain Hose connection loose? Is there a trap in Drain Hose? Is Drain Hose clogged?

Is main unit installed in stable condition? Is main unit broken or deformed at the time of transportation or maintenance?

Is Fan rotating? >> Check Fan Motor

02-28

1. Erroneous installation 2. Drain hose failure

MPa MPa

SERVICE PARTS INFORMATION 1

MPa

Compressor

Diagnosis method of Compressor (If outdoor unit LED displays error, refer to Trouble shooting )

Does not start up

Is there open or loose connection cable?

Check connection of Compressor,and winding resistance. (Refer to the next page).

Check Inverter 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.)

>> If there is no failure, the defect of Compressor is considered (Locked compressor due to clogged dirt or less oil)

Replace Compressor

Stops soon after starting up

Is there open or loose connection cable?

Is Gas Pipe Valve open? (Low Pressure is too low)

Check if Refrigerant is leaking. (Recharge Refrigerant)

Check if Strainer is clogged. (PARTS INFORMATION 3)

Abnormal noise

Defective Compressor can be considered. (due to inside dirt clogging or broken component)

Check if vibration noise by loose bolt or contact noise of piping is happening.

02-29

2-4 SERVICE PARTS INFORMATION

MPa

SERVICE PARTS INFORMATION 2

Inverter Compressor

02-30

Check Point 1 : Check connection

Check Point 2 : Check winding resistance

Check Point 3 : Replace Inverter PCB

R(U)

S(V)

C(W)

Check terminal connection of Compressor (Loose or incorrect wiring)

Check winding resistance of each terminal

If the resistance value is 0 or infinite, replace Compressor.

If Check Point 1, 2 do not improve the symptom, replace lnverter PCB.

Resistance value : 0.71 (at 20°C)

R(U)

(RED)

S(V)

(WHITE)

C(W)

(BLACK)

Main PCB

Check connection of Main PCB (Loose or incorrect wiring)

W9W8

RED

WHITE

BLACK

Compressor

Inverter PCB

SERVICE PARTS INFORMATION 3

Check Point 2 : Check Coil of EEV

Yellow - Red

Orange - Red

Blue - Red

White - Red

Read wire

Resistance value

Check Point 1 : Check Connections

Check Point 5 : Check Opening and Closing Operation of Valve

Check Point 3 : Check Voltage from Main PCB.

Check Point 4 : Check Noise at start up

Pipe (In)

Pipe (Out)

Pipe (In)

CLOSE Example : Hot Gas

OPEN Example : Hot Gas

Pipe (Out)

Pipe (In) Pipe (Out)

Check Point 6 : Check Strainer

at 20°C

Outdoor unit Electronic Expansion Valve ( EEV )

Check connection of connector ( Loose connector or open cable )

Remove connector, check each winding resistance of Coil.

If Resistance value is abnormal, replace EEV.

Remove Connector and check Voltage (DC12V)

If it does not appear, replace Main PCB.

Turn on Power and check operation noise.

If an abnormal noise does not show, replace Main PCB.

When Valve is closed, it has a temp. difference between Inlet and Outlet.

If it is open, it has no temp. difference between Inlet and Outlet.

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.

02-31

CN40

EXPANSION VALVE COIL

RED

BLUE ORANGE YELLOW WHITE

1 2 3 4 5 6

SERVICE PARTS INFORMATION 5

Check Point 1 : Check rotation of Fan

Outdoor unit fan motor

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.

Pin number (wire color)

Terminal function (symbol)

1 (Red)

4 (Black)

5 (White)

6 (Yellow)

7 (Brown)

DC voltage (Vm)

No function

Earth terminal (GND)

Control voltage (Vcc)

Speed command (Vsp)

Feed back (FG)

SERVICE PARTS INFORMATION 4

Check Point 1 : Check rotation of Fan

Indoor unit fan motor

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.

Pin number (wire color)

Terminal function (symbol)

1 (Blue)

2 (Yellow)

3 (White)

4 (Black)

6 (Red)

Feed back (FG)

Speed command (Vsp)

Control voltage (Vcc)

Earth terminal (GND)

No function

DC voltage (Vm)

02-32

SERVICE PARTS INFORMATION 6

Check Point 3 : Check Heater wire.

Black - White

Read wire Resistance value

Check Point 1 : Check Connections

Heater Unit

Check connection of connector ( Loose connector or open cable )

Remove connector, check resistance of Heater wire.

If Resistance value is abnormal, replace Heater Unit.

02-33

Check Point 2 : Check electrical components

Check Check Fuses.

CN10

1 2 3 4 5

3 2 1

1 2 3 4 5

BLACK

WHITE

BLACK

WHITE

FUSE 250V5A

HEATER

THERMOSTAT (55°C)

>> If Fuse is open, check connection, and replace Fuse.

321 ~ 366

3 . APPENDING DATA

R410A

WALL MOUNTED type

INVERTER

03-01

3-1. FUNCTION SETTING

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.

3-1-1 INDOOR UNIT

( Factory setting)

Setting Description

Function Number Setting Value

Standard

Slightly lower control

1-1. Setting the 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

Function Number Setting Value

Standard

Lower control

Slightly warmer control

Warmer control

1-2. Setting the 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

Function Number Setting Value

Yes

1-3. Setting the Auto Restart

Enable or disable automatic system restart after a power outage.

03-02

( Factory setting)

Setting Description

Function Number Setting Value

Yes

1-4. Setting the Indoor room temperature sensor switching function (Only for Wired remote controller)

The following settings are needed when use the control by Wired remote controller temperature sensor.

( Factory setting)

Setting Description

Function Number Setting Value

1-5. Setting the Remote controller signal code

Change the indoor unit Signal Code, depending on the remote controllers.

* If setting value is "00" : Room temperature is controlled by the indoor unit temperature sensor. * If setting value is "01" : Room temperature is controlled by remote controller unit sensor.

10°C HEAT

03-03

Settings will not be changed if invalid numbers or setting values are selected.

After the power is turned on, perform the "FUNCTION SETTING" according to the installation conditions using the remote controller.

This procedure changes to the function settings used to control the indoor unit according to the installation conditions. Incorrect settings can cause the indoor unit malfunction.

Entering the Function Setting Mode

While pressing the FAN button and SET TEMP.( ) simultaneously, press the RESET button to enter the function setting mode.

3-1-2 Procedures to change the Function Setting for wireless RC

(2) Press the SET TEMP. ( ) ( ) buttons to select the Function Number. (Press the MODE button to switch between the left and right digits.)

(3) Press the FAN button to proceed to Setting Value. (Press the FAN button again to return to the Function Number selection.)

Selecting the Function Number and Setting Value

(6) Press the START/STOP button. It makes a signal to indoor unit. (Indoor unit run the setting.)

(7) Press the RESET button to cancel the function setting mode.

(8) After completing the FUNCTION SETTING, be sure to turn of 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.

(4) 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) Press the MODE button, and proceed to Fanction Number and Setting Value. (There is no necessity for setting remote control signal code. Because signal code is setting by Fanction Number and Setting Value.)

(5) Press the TIMER MODE button. It makes a signal to indoor unit. (Indoor unit recognize the setting.)

10°C HEAT

1 0 °

C H

E A T

03-04

(1) Press the MODE button for more then 5 seconds.

(3) Press the MODE button. (Return to normal display)

Custom code setting for remote controller

(2) Press the SET TEMP. ( ) ( ) buttons to change the signal code between . Match the code on the display to the air conditioner signal code. (initially set to )

If you change the setting of Fanction Number and Setting Value after setting custom code in remote controller, please set custom code in remote controller again. The remote control unit resets to signal code A when the batteries in the remote control unit are replaced. If you use a signal code other than signal code A, 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.

CAUTION

-10.0

-5.0

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

-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

Room temperature thermistor

Temp ( C)

Resistance(k )

Voltage(V)

Indoor heat exchanger thermistor

Temp ( C)

Resistance(k )

Voltage(V)

Discharge thermistor

Outdoor heat exchanger thermistor

Outdoor temperature thermistor

03-05

3-2. Thermistor Resistance Values

3-2-1 INDOOR UNIT

3-2-2 OUTDOOR UNIT

Temp ( C)

Resistance(k )

Voltage(V)

Temp ( C)

Resistance(k )

Voltage(V)

58.2

44.0

33.6

25.9

20.2

15.8

12.5

10.0

8.0

6.5

5.3

4.3

0.73

0.93

1.15

1.39

1.66

1.94

2.22

2.50

2.77

3.03

3.27

3.48

233.2

176.0

134.2

103.3

80.3

62.9

49.7

39.6

31.7

25.6

20.8

17.1

14.1

11.6

9.7

0.88

1.10

1.36

1.63

1.92

2.21

2.51

2.79

3.06

3.30

3.53

3.73

3.90

4.05

4.19

-30.0

-25.0

-20.0

-15.0

-10.0

-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

-30.0

-25.0

-20.0

-15.0

-10.0

-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

1013.1

729.1

531.6

392.3

292.9

221.1

168.6

129.8

100.9

79.1

62.5

49.8

40.0

32.4

26.3

21.6

17.8

14.8

12.3

10.3

8.7

7.4

6.3

5.4

4.6

4.0

3.4

3.0

2.6

2.3

2.0

0.06

0.09

0.12

0.16

0.21

0.28

0.36

0.46

0.57

0.71

0.86

1.03

1.23

1.43

1.65

1.88

2.11

2.34

2.57

2.79

3.00

3.19

3.37

3.54

3.69

3.83

3.96

4.07

4.17

4.26

4.33

95.6

68.9

50.3

37.2

27.8

21.0

16.1

12.4

9.6

7.6

6.0

4.8

3.8

3.1

2.5

2.1

1.7

1.4

1.2

1.0

0.8

0.7

0.6

0.24

0.32

0.43

0.57

0.73

0.92

1.14

1.39

1.65

1.93

2.21

2.49

2.77

3.02

3.26

3.48

3.67

3.85

4.00

4.13

4.25

4.35

4.43

Temp ( C)

Resistance(k )

Voltage(V)

-30.0

-25.0

-20.0

-15.0

-10.0

-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

224.3

159.7

115.2

84.2

62.3

46.6

35.2

26.9

20.7

16.1

12.6

10.0

8.0

6.4

5.2

4.2

3.5

2.8

2.4

2.0

1.6

1.4

1.2

0.73

0.97

1.25

1.56

1.90

2.26

2.61

2.94

3.24

3.52

3.76

3.96

4.14

4.28

4.40

4.50

4.59

4.65

4.71

4.76

4.79

4.83

4.85

Fujitsu AS* A09LEC, AS* A12LEC, AO* R09LECN, AO* R12LECN Service Instruction

Specifications and Main Features

Frequently Asked Questions

User Manual