Fujitsu ARCG040LSTA, AOCG040LBTA Service Instruction

Download

SPLIT TYPE ROOM AIR CONDITIONER

Models Indoor unit Outdoor unit

AOCG040LBTA

SERVICE

INSTRUCTION

R410A

ARCG040LSTA

SLIM DUCT type

INVERTER

CONTENTS

1. DESCRIPTION OF EACH CONTROL OPERATION

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

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

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

5. INDO

OR FAN CONTROL...........................................................................................

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

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

8. TIMER OPERATION CONTROL...........................................................

.....................

7. COMPRESSOR CONTROL........................................................................................

10. TEST OPERATION CONTROL..................................................................................

9. ELECTRONIC EXPANSION VALVE CONTROL.......................................................

12. 4-WAY VALVE EXTENSION SELECT....................................

...................................

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

16. ECONOMY OPERATION...........................................................................................

13. AUTO RESTART........................................................................................................

19.

DRAIN PUMP OPERATION.......................................................................................

17. FRESH AIR CONTROL..............................................................................................

20. DEFROST OPERATION CONTROL..........................................................................

01-01 01-02 01-02 01-03 01-05 01-08

01-09 01-10 01-14 01-14

01-14 01-15

01-15

01-16

01-17

18. EXTERNAL ELECTRICAL HEATER CONTROL.

....................................................... 01-16

01-18

21. OFF DEFROST OPERATION CONTROL.................................................................. 01-20

22. VARIOUS PROTECTIONS......................................................................................... 01-21

01-14

14. MANUAL AUTO OPERATION.................................................................................... 01-15

15. C

OMPRESSOR PREHEATING.................................................................................. 01-15

01-16

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

2-1-1 RECEIVER UNIT AND WIRED REMOTE CONTROLLER DISPLAY................

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

2. TROUBLE SHOOTING

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

2-3

TROUBLE SHOOTING WITH NO ERROR CODE....................................................

2-4 SERVICE PARTS INFORMATION............................................................................

02-01 02-01 02-02

02-24

02-03

02-29

3-1-2 Procedures to change the Function Setting........................................................

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

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

3. APPENDING DATA

03-01 03-01 03-04

3-2-2 OUTDOOR UNIT................................................................................................

3-2-1 INDOOR UNIT....................................................................................................

3-2 Thermistor Resistance Values................................................................................

03-07 03-07 03-07

R410A

SLIM DUCT type

INVERTER

1 . DESCRIPTION OF EACH CONTROL OPERATION

1. COOLING OPERATION

1-1 COOLING CAPACITY CONTROL

01-01

( Fig.1 : Outdoor temperature zone )

Minimum frequency

Maximum frequency

AOCG040LBTA

36°C

A zone

34°C

32°C

B zone

30°C

21°C

C z

one

19°C

D zone

Indoor fan mode

Me Lo Quiet

( Table 1 : Compressor frequency range )

E zone

F zone

10°C

0°C

12°C

2°C

* When the room temperature is between +2°C to -2.5°C 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.

* If the room temperature is some degrees lower tha

n a set temperature,

the compressor will be stopped.

A zone

B zone

C zone

D zone

E zone

F zone

Outdoor temperature

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

Outdoor temp. zone

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

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

AOCG040LBTA

99rps

72rps

52rps

63rps

30rps

21rps

19rps

52rps

41rps

34rps

27rps

59rps

52rps

41rps

34rps

18rps 68rps

99rps

2. HEATING OPERATION

2-1 HEATING CAPACITY CONTROL

01-02

3. DRY OPERATION

3-1 INDOOR UNIT 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 frequency of the compressor. * If the room temperature is lower by 3°C 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 to -3°C of the setting temperature, the compressor frequency is controlled within the range shown in Table 3.

( Table 3 : Compressor frequency range )

Minimum frequency

Maximum frequency

AOCG040LBTA

16rps 140rps

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 4. However, after the compressor is driven, the indoor unit shall run at operation frequency of 52rps for 60 seconds.

Ts+0.5°C

Ts -1.5°C

Ts -0.5°C

Ts+1.5°C

( Table 4 : Compressor frequency in Dry mode)

( Fig.2 : Compressor control based on room temperature )

Operating frequency

J zone

Y zone

X zone 30rps

30rps

0rps

AOCG040LBTA

X zone

J zone

Y zone

Room temperature

4. AUTO CHANGEOVER OPERATION

01-03

Cooling, Dry and Monitoring mode. 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, indoor fan and outdoor fan are operated for around 2 minutes. Room temperature and outdoor temperature are sensed, and the operation mode is se

lected in accordance with the table below. <Monitoring mode>

Cooling mode

25°C

Heating mode

( Table 5 : Operation mode selection table )

Room temperature (TR)

TR> Ts + 2°C

Ts + 2°C TR Ts - 2°C

*Middle zone

TR < Ts - 2°C Heating

When Cooling or Dry mode was selected at and air flow mode is Auto, the air conditioner operates as follow.

The same operation as COOLING OPERATION AND DRY OPERATION. When the room temperature has remained at set temperature -1.5°C, operation is automatically switched to Dry mode. If the room temperature reaches set temperature +2°C during Dry mode, operation returns to Cooling.

( Fig. 3 : Outdoor temperature zone selection )

Cooling

(Autmatic dry)

Operation mode

*If it's Middle zone, operation mode of indoor unit is selected as below.

(1). Same operation mode is selected as outdoor unit.

If outdoor unit is operating in Cooling, Dry, and Heating mode, indoor unit will be operated by the same operation mode.

(2). Selected by the outdoor temperature.

If outdoor unit is operating in other than Cooling, Dry, and Heating mode, i

ndoor unit will be operated according to the outdoor temperature as below.

Cooling

Dry

Compressor stop

When the room temperature drops

When the room temperature rises

Ts + 2°C

Ts - 0.5°C

Ts - 1.5°C

Ts + 1°C

Ts - 1.5°C

Ts - 2.5°C

( Fig.4 : Auto changeover : Cooling - Dry )

TR : Room temperature Ts : Setting temperature

( Air flow mode : Auto )

When Heating was selected at , the same operation as HEATING OPERATION of page 01-02 is performed.

When the compressor was stopped for 6 consecutive minutes by the temperature control functi

on after the Cooling(Auto:Dry) or Heating mode was selected at above, operation is switched to Monitoring and the operation mode is selected again.

01-04

START

Room temp. Ts + 2°C?

COOLING (AUTO:DRY)

OPERATION

HEATING OPERATION

YES

AUTO CHANGEOVER operation flow chart

TS : Setting temperature

Room temp.

Ts - 2°C?

Thermostat remains

in OFF state for 6 minutes or

longer?

System stops

or operation command other than

auto changeover operation?

Thermostat remains

in OFF state for 6 minutes or

longer?

System stops

or operation command other than

auto changeover operation?

Middle zone

Operation mode

of outdoor unit : Cooling or Dry?

YES

Operation mode

of outdoor unit : Heating?

YES

Outdoor temperature

25°C?

YES

YESYES

5. INDOOR FAN CONTROL

1. Fan speed

( Table 6 : Indoor Fan Speed )

01-05

*Note, during Economy operation and operation mode is Fan, air flow is 1 step downs. (Hi > Me, Me > Lo, Lo > Quiet, Quiet > Soft Quiet)

Operation mode Air flow mode

Speed (rpm)

1560 1400 1240 1030

500 1560 1400 1240 1030

500 1030

500

Dry Monitoring

Cooling Fan

Heating

ARCG040LSTA

Hi Me Lo

Quiet

S-Lo

Hi Me Lo

Quiet

*Soft Quiet

Auto S-Lo

2. FAN OPERATION

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.

3. COOLING OPERATION

( 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 °C

1 °C > TR-Ts

2 °C > TR-Ts > 1 °C

TR-Ts > 2.5 °C

1.5 °C > TR-Ts

2.5 °C > TR-Ts > 1.5 °C =

High mode

Med mode

Low mode

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 [HIGH] [QUIET], the indoor motor will run at a constant airflow of [COOL] operation modes QUIET, LOW, MED, HIGH, as shown in Ta

ble 6.

5. HEATING OPERATION

01-06

TR-Ts > - 1.5 °C

- 2.5 °C > TR-Ts

- 1.5 °C > TR-Ts > - 2.5 °C =

TR-Ts > - 1 °C

- 2 °C > TR-Ts

- 1 °C > TR-Ts > - 2 °C =

( Fig.7 : Airflow change - over ( Heating : AUTO ) )

When the room temperature rises

When the room temperature drops

TR : Room temperature Ts : Setting temperature

Low mode

Med mode

High mode

Switch the airflow [AUTO], and the indoor fan motor will run according to a room temperature, as shown in Fig. 7. On the other hand, if switched [HIGH] [QUIET], the indoor motor will run at a constant airflow of [HEAT] operation modes QUIET, LOW, MED, HIGH, as shown in Table 6.

4. DRY OPERATION

During the dry operation, the fan speed setting can not be changed,it operates automatically as shown in Fig. 6. Room temperature variation which the room temperature sensor of the indoor unit body has detected.

Compressor

OFF

Indoor fan

Dry air flow

S-Lo

OFF

( Fig.6 : Indoor Fan Control )

10 30 60 180 60 180 60 10 30

(SEC)

*Hi or setting fan mode

*Lo or setting fan mode

37°C

29°C

32°C

24°C

Indoor heat exchanger temperature rises

Indoor heat exchanger temperature drops

During Normal Heating operation

S-Lo

*Lower speed is selected.

6. COOL AIR PREVENTION CONTROL (Heating mode)

The maximum value of the indoor fan speed is set as shown in Fig. 8, based on the detected temperature by the indoor heat exchanger sensor on heating mode. When the compressor does not operate, the indoor fan motor operates [S-Lo] mode.

( Fig.8 : Cool Air Prevention Control )

01-07

Compressor

OFF

Indoor fan Setting air flow

OFF

10 30 60 180 60 180 60 10 30

(sec)

S-Lo

480rpm

( Fig 9 : Indoor Fan Control)

7. FAN CONTROL FOR ENERGY SAVING

When the air flow setting except AUTO mode, the indoor fan motor will run as shown in Fig.9.

( Factory setting)

Setting Description Function Number Setting Value

Disable

Enable

00 : When the outdoor unit is stopped, the indoor unit fan operates continuously following the setting on the remote controller.

01 : When the outdoor unit is stopped, the indoor unit fan operates intermittently at a very low speed.

6. OUTDOOR FAN CONTROL

( Table 8 : 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 table 9 without relating to the compressor frequency.

( Table 9 : Outdoor fan speed after the defrost )

1. Outdoor Fan Motor

2. Fan Speed

AC Motor DC Motor

AOCG040LBTA

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

( Table 7 : Type of Motor )

AOCG040LBTA 1100rpm

Cooling Heating

AOCG040LBTA

Zone

Refer to Fig.8

(rpm)

Dry

1050/ 870/ 720/ 530

870/ 530/ 300

1100/ 1000/ 780/ 720/ 590/ 480 530

250/ 200

300

( Fig.8 : Outside air temperature zone selection )

21°C

10°C

Outside air temperature

Z zone

Y zone

F zone

G zone

12°C

2°C

19°C

0°C

01-08

7. COMPRESSOR CONTROL

1. OPEARTION FREQUENCY RANGE

The operation frequency of the compressor is different based on the operation mode as shown in the Table 10.

Cooling / Dry Heating

Minimum Maximum Minimum Maximum

AOCG040LBTA

12rps 99rps 16rps 140rps

AOCG040LBTA 40rps 59rps 72rps 80rps 101rps 110rps

(Table 10 : Compressor frequency range)

2. OPEARTION FREQUENCY CONTROL AT NORMAL START UP

The compressor frequency soon after the start-up is controlled as shown in the Fig.11

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

Time

Time Time Time

Time

(Frequency)

Frequency

Frequency Frequency F

requency

Frequency

Time

Time Time Time

Time

AOCG040LBTA 80sec 110sec 140sec 200sec 350sec 410sec

(Time)

Frequency

Time

Frequency

Time

3. LIMITATION OF COMPRESSOR FREQUENCY BY OUTDOOR TEMPERATURE

The minimum compressor frequency is limited by outdoor temperature as shown in the Table11.

AOCG040LBTA

24rps 18rps 12rps 16rps

(Table11 : Limitation of Compressor Frequency)

[ Cooling/ Dry ]

[ Heating ]

Under Over Under Over Under Over

0°C 10°C 40°C

AOCG040LBTA

Under Over Under Over Under Over Under Over

24rps 24rps 18rps 16rps16rps

- 5°C 3°C 7°C 40°C

01-09

8. TIMER OPERATION CONTROL

01-10

AR-RAJ2T

1. ON / OFF TIMER

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

8-1 WIRELESS REMOTE CONTROLLER

1. ON / OFF TIMER

2. PROGRAM TIMER

3. SLEEP TIMER

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.

Stop mode

Operation mode

Set time

Set time Set time Set time

3. SLEEP TIMER

If the sleep timer 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 tem

perature )

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

-2°C

-1°C

-4°C

-3°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.

Set

30min

01-11

01-12

AR-WAE1E

1. ON / OFF TIMER

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

The weekly timer allows up to two ON and OFF time to set up per day.

Use this timer function to set operating time for each day of the week.

Operation mode

The operating time can be set in 30 min increments only. The OFF time can be carried over to next day. The ON timer and the OFF timer functions cannot be set with using the weekly timer.

Both ON and OFF time must be set.

2. WEEKLY TIMER

2-1. WEEKLY TIMER

Stop mode

Operation mode

Set time

Set time Set time Set time

8-2 WIRED REMOTE CONTROLLER (OPTION)

1. ON / OFF TIMER

2. WEEKLY TIMER

3. TEMPERATURE SET BACK TIMER

The DAY OFF setting is only available for days for which weekly settings already exist.

The SET BACK timer only changes the set temperature for 7 days, it cannot be used to start or stop air conditioner operation.

The SET BACK timer can be set to operate up to two times per day but only one temperature setting can be used.

During the COOL/DRY mode, the air conditioner will operate at a minimum of 18°C even if the SET BACK temperature is set to 17°C or lower.

The DAY OFF setting can only be set one time. The DAY OFF setting is cancelled automatically after the set day has passed.

Normal

Next day setting

If the operating time carries over to the next day (during a next day setting), the effective DAY OFF range will be set as shown below.

2-2. DAY OFF setting

3. TEMPERATURE SET BACK TIMER

Stop mode

Operation mode

Stop mode

Operation mode

Preceding day Next day

DAY OFF

Stop mode

Operation mode

Stop mode

Operation mode

DAY OFF

Setting day

Preceding day Next daySetting day

Case of SET BACK timer on the Cooling operation. ( Setting temperature :22°C, SET BACK temperature :26°C)

SET BACK setting

Operation temperature

26°C

22°C

26°C

22°C

24°C

ON OFF OFFON

*1: During the SET BACK function, the setting temperature is changed.

Chenge the setting temperature: 22°C 24°C

01-13

9. ELECTRONIC EXPANSION VALVE CONTROL

10. TEST OPERATION CONTROL

Under the condition where the air conditioner stops, press the MODE button and the FAN button simultaneously for 2 seconds or more, and the test operation control mode will appear. During test running, " " will display on the remote controller display. Set the test operation mode, and the compressor will continue to run regardless of whatever the room temperature sensor detects. The test operation mode is released if 60 minutes have passed after setting up the test operation.

The compressor won't enter operation status for 3 minutes after the compressor is stopped, even if any operation is given.

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

With Wired Remote Controller

Under the condition where the air conditioner runs, press the button, and the test operation control mode will appear. During test running, the operation lamp and timer lamp of the air conditioner body twinkle simultaneously. Set the test operation mode, and the compressor will continue to run regardless of whether the room temperature sensor detects. The test operation mode is released if 60 minutes have passed after setting up the test operation.

With Wireless Remote Controller

At the time when the air conditioner is switched from the cooling mode to heating mode, the compressor is stopped, and the 4-way valve is switched in 3 minutes later after the compressor stopped.

12. 4-WAY VALVE EXTENSION SELECT

The most proper opening of the electronic expansion valve is calculated and controlled under the present operating condition based on the Table12. The compressor frequency, the detected temperature by the discharge temperature sensor, the indoor heat exchanger sensor, the outdoor heat exchanger sensor, and the outdoor temperature sensor.

The expansion valve is set at 480 pulses 110seconds after the c

ompressor had stopped.

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).

( Table12 : The pulse range of the electronic expansion valve control )

Cooling / Dry mode Heating mode

AOCG040LBTA

Operation mode Pulse range

Between 52 to 480 pulses.

Initialization will start after 24 hours pass from the last initialization, and the compressor stops

01-14

13. AUTO RESTART

14. MANUAL AUTO OPERATION (When using the Wireless RC)

If MANUAL AUTO Button is set, the operation is controlled as shown in Table 14. If the remote control is lost or battery power dissipated, this function will work without the remote control.

Operation mode

Auto changeover

Auto

Continuous (No timer setting available)

24°C

(Table 14)

Setting temp.

OFF

Economy

Fan control mode

Timer mode

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 or greater, preheating is ended.

hen 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 resumed with the memorized operation contents.

(Table 13 : Operation contents memorized when the power is interrupted)

Operation mode Set temperature Set air flow Set air flow direction Swing Economy operation

Thermistor detected position

Timer mode

Wireless remote controller

Wired remote controller (Memory Backup : Disable)

Wired remote controller (Memory Backup : Enable)

OFF Timer

ON Timer

WEEKLY Timer

Temperature

: Memorize : Not memorize

*It is necessary to set on the DIP-SW1-No,6 of the wired remote controller, to enable the memory backup. Refer to the installation manual of wired remote controller for details.

SET BACK Timer

01-15

The fan motor for Fresh Air is operated in synchronization with the indoor fan operation as shown in Fig. 12.

The ECONOMY operation functions by pressing 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.

The external ele

ctrical heater is operated as shown in Fig. 13.

17. FRESH AIR CONTROL

18. EXTERNAL ELECTRICAL HEATER CONTROL

(Fig.12 : Fresh air control)

(Fig.13 : External electrical heater control)

Operation

Stop

Operation

Stop

Fan motor (Indoor unit)

Fan motor (for Fresh Air)

When the room temperature rises

When the room temperature drops

Ts : Setting temperature

Heater : OFF

Heater : ON

Heater : OFF

Ts -10°C

Ts -1°C

Ts -3°C

Ts -12°C

When the compressor stop, External electrical heater is OFF.

16. ECONOMY OPERATION

Mode Cooling/ Dry Heating

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

(Table 15 )

01-16

19. DRAIN PUMP OPERATION

1. When the compressor starts, the drain pump starts simultaneously.

2. The drain pump operates continuously for 3 minutes after the compressor is turned off.

3. When the compressor stops by the "Anti- freezing protection", the drain pump is turned off in 1 hour after the compressor stops.

4. When the water level in the drain pan rises up and then the float switch functi

ons: The compressor, indoor and outdoor fan motor operation are stopped. Drain pump operates continuously for 3 minutes after the float switch is turned off. (Almost condensing water may be drained)

5. When the float switch turns ON continuously for 3 minutes, "FAILURE INDICATION" operates.

(It is necessary to turn off power for release it. )

6. When the float switch turns OFF less than 3 minutes, the unit starts Cooling operation.

1 2

1. When the water level in the drain pan rises up and then the float switch functions:

Drain pump operates continuously for 3 minutes after the float switch is turned off.

(Almost condensing water may be drained)

2. When the float switch turns ON continuously for 3 minutes, "FAILURE INDICATION" operates. Thereafter, even if the float switch turns OFF, the "FAILURE INDICATION" is not

released.

(It is necessary to turn off power for release it. )

During Cooling / Dry mode

3 minutes

OFF

Compressor

Drain Pump

3 minutes

3 minutes ST

OFF

Float Switch

Compressor

Indoor Fan

Drain Pump

3 minutes

OFF

Float Switch

Drain Pump

During HEATING / FAN mode / Stop operation

Less than 3 minutes

The indoor unit fan motor operates after the float switch is turned off.

( Fig. 14 : Detail of Drain Pump Operation in Cooling / Dry )

( Fig. 15 : Detail of Drain Pump Operation in Heating )

01-17

20. DEFROST OPERATION CONTROL

1. CONDITION OF STARTING THE DEFROST OPERATION

The defrost operation starts as shown in the following Table 16.

2. CONDITION OF THE DEFROST OPERATION COMPLETION

Release Condition

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

Defrost operation is released when the conditions become as shown in Table 17.

(Table 17 : Defrost Release Condition)

(Table 16 : Condition of starting Defrost Operation )

Integrating defrost

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.

Normal defrost

Compressor integrating operation time

Less than 40 minutes More than 40 minutes

Does not operate

Outdoor heat exchanger temp. < -17°C (at outside air temp. > -10°C)

Outdoor heat exchanger temp. < Outside air temp.- 7°C or Outdoor heat exchanger temp. < - 20°C (at outside air temp. < -10°C)

More than 240 minutes (For continuous operation)

Less than 10 minutes ( For

intermittent operation )

Compressor integrating operation time

Outdoor heat exchanger

temperature below -3°C

More than 213 minutes (For continuous operation)

Outdoor heat exchanger

temperature below -5°C

OFF count of the compressor

40 times

01-18

Outdoor fan : OFF Compressor speed : 0 rps EEV : 480pulse 4-way valve : OFF Compressor speed : 80rps

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 HEX temp.: Over 16°C

Compressor ON time: Maximum 15 minutes

Defrost end

Outdoor HEX temp. Below - 17°C

Outdoor HEX temp.

- Outside air temp. Below - 7°C or Outdoor HEX temp. Below - 20°C

Integrating defrost

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

Defrost start

Normal defrost

Outside air temp. > -10°C Outside air temp. < -10°C

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

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

Intermittent operation Continuous operation

01-19

21. OFF DEFROST OPERATION 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.

OFF Defrost Flow Ch

art

Heating operation stop

Defrost start

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

Outdoor heat exchanger temperature: Over 16°C or Compressor ON time: Over 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.

In heating operation, the outdoor heat exchanger temperature is less than - 4°C, compressor continuous operation more than 10 minutes, and compressor operation integrating time lasts for more than 30 minutes.

Outdoor heat exchanger temperature : Below - 4°C Compressor continuous operation : Over 10 minutes Compressor integrating operation : Over 30 minutes

01-20

22. 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 20 rps, and it continues to decrease the frequency for 20 rps 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 LED starts blinking.

AOCG040LBTA

104°C 101°C 110°C

( Table 18 : Discharge temperature over rise prevension control / Release temperature )

Temperature

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 19 : Current release operation value / Release value )

[ Heating ]

OT : Outdoor Temperature

[ Cooling ]

AOCG040LBTA

OT (Control / Release)

4.5A / 4.0A

6.0A / 5.5A

9.0A / 8.5A

46°C

40°C

OT : Outdoor Temperature

AOCG040LBTA

OT (Control / Release)

7.0A / 6.5A

9.0A / 8.5A

11.0A / 10.5A

13.0A / 12.5A

17°C

12°C

5°C

01-21

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 20 : 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 and the outdoor fan motor are stopped and trouble display is performed.

5. HIGH TEMPERATURE RELEASE CONTROL ( HEATING MODE )

Outdoor temperature

Over than 10°C *2

or 12°C *1

Less than 10°C *2

or 12°C *1

*1. When the temperature rises. *2. When the temperature drops.

4°C

7°C

13°C

Temperature Temperature

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

It returns to the normal operation

Compressor is stopped

53°C

55°C

63°C

50°C

The compressor frequency is decreased 3rps every 60seconds.

The compressor frequency is decreased 25rps every 120seconds.

Stable zone

01-22

2 . TROUBLE SHOOTING

R410A

SLIM DUCT type

INVERTER

2. TROUBLESHOOTING

02-01

2-1 ERROR DISPLAY

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

Manual auto switch error

Indoor room thermistor error

Indoor unit PCB model information error

Wired remote controller communication error

Error Contents

Continuous

4 times

Continuous2 times

3 times

5 times

Continuous2 times1 times

Continuous1 times1 times

Trouble shooting

1 times

Serial communication error

Indoor unit fan motor error

Indoor heat ex. thermistor error

Continuous4 times 2 times

Continuous1 times5 times

Continuous

Continuous4 times

7 times

6 times

1 times

7 times 3 times

Continuous

7 times 4 times

Continuous

PFC circuit error

Discharge temp. thermistor error

Outdoor unit Heat Ex. liquid temp. thermistor error

Outdoor temp. thermistor error

1,2

Continuous

Continuous5 times

9 times

7 times

Compressor rotor position detection error (permanent stop)

Outdoor unit fan motor error

Continuous4 times9 times

Continuous9 times 9 times

4-way valve error

Continuous1 times10 times

Discharge temp. error

Trip detection

Continuous5 times6 times

IPM error

Receiver Unit Display

Wired Remote Controller Display

Indoor unit capacity error

Continuous2 times2 times

Continuous2 times6 times

Outdoor unit main PCB model information error or communication error

Continuous3 times5 times

Drain pump error

Please refer the flashing pattern as follows. The

lamps operate as follows according to the error contents.

(Green)(Orange) (Green)

[ ]

(Green)(Orange)

(

Green)

[ ]

02-02

When " Er " in Temperature Display is displayed, inspection of the air conditioning system is necessary. Please consult authorized 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

0 1 2 3 4 5 6 7

F E d c b A 9 8

Lower

Raise

02-03

2-2 TROUBLE SHOOTING WITH ERROR CODE

Trouble shooting 1 OUTDOOR UNIT Error Method:

Detective Actuators: Detective details:

Forecast of Cause:

YESYES

Serial communication 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 AC198V(AC220V-10%) - 242V(AC220V+10%) appears at outdoor unit terminal L - N.

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.

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

Check serial signal (Reverse transfer signal)

>> Check if indicated value swings between AC90V and AC270V at outdoor unit terminal 1 - 3. >> If it is abnormal, Check the parts as follows.

- Outdoor unit fan motor (PARTS INFORMATION 5) >> If Outdoor fan motor is abnormal, replace Outdoor unit fan motor and Main PCB. >> If the part

s are normal, replace Main PCB.

WHITE

BLACK

RED

WHITE

BLACK

Indicate or Display:

Outdoor Unit : No indication Indoor Unit : Operation lamp: 1 time Flash, Timer lamp: 1 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : 11]

02-04

Trouble shooting 2 INDOOR UNIT Error Method:

Detective Actuators: Detective details:

Forecast of Cause:

YESYES

Serial communication error (Serial forward transfer error)

Indoor unit Controller PCB

1. Connection failure 2. External cause 3. Controller PCB 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 AC198V(AC220V-10%) - 242V(AC220V+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 AC30V and AC130V at outdoor unit terminal 2 - 3. >> If it is abnormal, replace Controller PCB.

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

WHITE

BLACK

RED

WHITE

BLACK

Indicate or Display:

Outdoor Unit : No indication Indoor Unit : Operation lamp: 1 time Flash, Timer lamp: 1 time Flash Economy lamp : Continuous flash.

ERROR CODE : [E : 11]

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

Wired remote controller communication error

Indoor unit Controller PCB Wired remote controller

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.

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

02-05

l .

>> If it is DC12V, 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

Check Voltage at CN14 (terminal 1-3) of Controller PCB. (Power supply to Remote control)

Indicate or Display:

Outdoor Unit : No indication Indoor Unit : Operation lamp: 1 time Flash, Timer lamp: 2 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : 12]

Detective Actuators: Detective details:

Forecast of Cause :

OKOK

All indoor unit

The total capacity of the indoor unit if it is install beyond.

1. The selection of indoor units is incorrect 2. Main PCB (Outdoor unit) failure

Check Point 1 : Check the total capacity of indoor unit

Check the total capacity of the connected indoor units.

>> If abnormal condition is found, correct it by referring to Installation Manual or Design & Technical Manual.

02-06

Trouble shooting 4 INDOOR UNIT Error Method:

Indoor unit capacity error

Check Point 2 : Replace Main PCB

If Check Point 1 do not improve the symptom, replace Main PCB of Outdoor unit.

Indicate or Display:

Outdoor Unit : No indication Indoor Unit : Operation lamp: 2 time Flash, Timer lamp: 2 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : 22]

02-07

Trouble shooting 5 INDOOR UNIT Error Method:

Indoor unit PCB model information error

Detective Actuators:

Detective details:

Forecast of Cause:

Check Point 3 : Replace Controller PCB

Check Point 2 : Check Indoor unit electric components

YESYES

Indoor unit Controller PCB

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

Check Point 1-1 : Reset Power supply and operate

Does Error indication show again?

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).

Note : EEPROM

EEPROM(Electronically Erasable and Programmable Read Only Memory) is a nonvolatile 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.

Chang

e Controller PCB.

Check all connectors. (loose connector or incorrect wiring)

Check any shortage or corrosion on PCB.

When power is on and there is some below case. When model information of EEPROM is incorrect. When the access to EEPROM failed.

Indicate or Display:

Outdoor Unit : No indication Indoor Unit : Operation lamp: 3 time Flash, Timer lamp: 2 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : 32]

Trouble shooting 6 INDOOR UNIT Error Method:

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 60 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 Controller PCB and Indicator PCB

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

02-08

Indicate or Display:

Outdoor Unit : No indication Indoor Unit : Operation lamp: 3 time Flash, Timer lamp: 5 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : 35]

Detective Actuators:

Indoor unit Controller PCB Room temperature thermistor

Detective details:

Room temperature thermistor is open or short is detected always.

Forecast of Cause :

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

Check Point 2 : Remove connector and check Thermistor resistance value

Check Point 1 : Check connection of Connector

Check if connector is loose or removed Check erroneous connection Check if thermistor cable is open

>>Reset Power when reinstalling due to removed connector or incorrect wiring.

Trouble shooting 7 INDOOR UNIT Error Method:

Indoor room thermistor error

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

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

If the voltage does not appear, replace Controller PCB.

H/E (MID) Thermistor

Room Temp. Thermistor

ARCG040LSTA

BLACK BLACK

121

1 1 2 2

CN5

CN8

GRAY GRAY

1 2

CN7

02-09

Thermistor Characteristics (Rough value)

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

6.5

8.0

10.012.515.820.225.933.6

Resistance Value ( )

2520151050

58.2

-10

44.0

-5

Temperature (°C)

Resistance Value ( )

4.35.3

4540

Temperature (°C)

Indicate or Display:

Outdoor Unit : No indication Indoor Unit : Operation lamp: 4 time Flash, Timer lamp: 1 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : 41]

Detective Actuators:

Indoor unit Controller PCB Heat exchanger (MID) thermistor

Detective details:

Heat exchanger (MID) thermistor is open or short is detected always.

Forecast of Cause :

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

Check Point 1 : Check connection of Connector

Check if connector is loose or removed Check erroneous connection Check if thermistor cable is open

>>Reset Power when reinstalling due to removed connector or incorrect wiring.

02-10

Trouble shooting 8 INDOOR UNIT Error Method:

Indoor heat ex. thermistor error

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

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

Thermistor Characteristics (Rough value)

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

Check Point 2 : Remove connector and check Thermistor resistance value

Resistance Value ( )

Temperature (°C)

Resistance Value ( )

Temperature (°C)

-30 -20 -10 -5 0 5 10 15 20

25 30 35 40 45 50 55 60 63

)

°C)

)

°C)

1013.1 531.5 292.9 221.1 168.6 129.8 100.9 79.1 62.5

49.8 40.0 32.4 26.3 21.6 17.8 14.8 12.3 11.1

If the voltage does not appear, replace Controller PCB.

H/E (MID) Thermistor

Room Temp. Thermistor

ARCG040LSTA

BLACK BLACK

121

1 1 2 2

CN5

CN8

GRAY GRAY

1 2

CN7

Indicate or Display:

Outdoor Unit : No indication Indoor Unit : Operation lamp: 4 time Flash, Timer lamp: 2 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : 42]

02-11

Trouble shooting 9 INDOOR UNIT Error Method:

Indoor unit fan motor error

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 m

otor.

(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 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.

Indicate or Display:

Outdoor Unit : No indication Indoor Unit : Operation lamp: 5 time Flash, Timer lamp: 1 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : 51]

Trouble shooting 10 INDOOR UNIT Error Method:

Drain pump error

Detective Actuators:

Indoor unit Controller PCB Float switch

Detective details:

When Float switch is ON for more than 3 minutes.

Check Point 1 : Check Float switch

Check operation of float switch. (any blocking by dust, etc.) Remove Float switch and check ON/OFF switching operation

by using a meter.

>>If Float switch is abnormal, replace it.

ON OFF

Forecast of Cause :

1. Float switch failure 2. Shorted connector/wire 3. Controller PCB failure

4. Drain pump failure 5. Hose clogging

Check Point 2 : Check Connector (CN 9) / Wire

Check loose contact of CN9 /shorted wire (pinched wire).

>>Replace Float switch if the wire is abnormal

Check Point 4 : Check Controller PCB

If Check Point 1 ~ 3 do not improve the symptom, change Controller PCB and execute the check operation again.

Check Point 3 : Check Drain hose

Check Drain hose .

>>If there is Hose clogging. Please clear the clog.

02-12

Indicate or Display:

Outdoor Unit : No indication Indoor Unit : Operation lamp: 5 time Flash, Timer lamp: 3 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : 53]

02-13

Trouble shooting 11 INDOOR UNIT Error Method:

Outdoor unit main PCB model information error or communication error

Detective Actuators:

Detective details:

Forecast of Cause:

Check Point 3 : Replace Main PCB

Check Point 2 : Check Indoor unit electric components

YESYES

Outdoor unit Main PCB

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

Check Point 1-1 : Reset Power Supply and operate

Does Error indication show again?

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).

Note : EEPROM

If Ch

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

Check all connectors. (loose connector or incorrect wiring)

Check any shortage or corrosion on PCB.

When power is on and there is some below case. When model information of EEPROM is incorrect. When the access to EEPROM failed.

Indicate or Display:

Outdoor Unit : No indication Indoor Unit : Operation lamp: 6 time Flash, Timer lamp: 2 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : 62]

Trouble shooting 12

INDOOR UNIT

OUTDOOR UNIT Error Method:

Detective Actuators:

Detective details:

Forecast of Cause :

OKOK

PFC circuit error

Outdoor unit Main PCB

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, change 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.

02-14

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.

Indicate or Display:

Outdoor Unit : No indication Indoor Unit : Operation lamp: 6 time Flash, Timer lamp: 4 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : 64]

Trouble shooting 13

OUTDOOR UNIT Error Method:

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 3 : Check Outdoor Fan

Check Point 5 : Replace Main PCB

OKOK

Check Point 1 : Check connections of Outdoor Unit Electrical Components

IPM error

Outdoor unit Main PCB Compressor

1. Defective connection of electric components 2. Outdoor Fan Operation failure

3. Outdoor Heat Exchanger clogged 4. Compressor failure 5. Main PCB failure

Check if connector is removed.

Check if the terminal connection is loose.

Check erroneous connection. Check if cable is open.

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

Check Point 2 : Check Outdoor Fan, Heat Exchanger

Is there anything obstructing the air distribution circuit? Is there any clogging of Outdoor Heat Exchanger? Is the Fan rotating by hand when operation is off ?

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

Check Outdoor Fan Motor. (Refer to Trouble shooting 19)

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

Check Point 4 : Check Compressor

(PARTS INFORMATION 2)

Check Compressor.

If Check Point 1 4 do not improve the symptom, change Main PCB.

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

02-15

Indicate or Display:

Outdoor Unit : No indication Indoor Unit : Operation lamp: 3 time Flash, Timer lamp: 2 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : 65]

Trouble shooting 14 OUTDOOR UNIT Error Method:

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 2 :

Check Point 3 :

OKOK

Discharge temp. thermistor error

Outdoor unit Main PCB Discharge pipe temperature thermistor

When the 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 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

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)

If the voltage does not appear, replace Main PCB.

02-16

THERMISTOR

(DISCHARGE)

THERMISTOR

(PIPE)

THERMISTOR

(OUTDOOR)

BLACK

CN70 CN71

1 2 3 4

1 2 3

BROWN

Thermistor Characteristics (Approx. value)

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

Resistance Value (k )

Temperature(°C)

Resistance Value (k )

Temperature(°C)

-30 -20 -10 0 10 20 30 40 50

60 70 80 90 100 110 120

1013.1 531.6 292.9 168.6 100.9 62.5 40.0 26.3 17.8

12.3 8.7 6.3 4.6 3.4 2.6 2.0

Indicate or Display:

Outdoor Unit : LED 0.1sec ON/ 0.1sec OFF Indoor Unit : Operation lamp: 7 time Flash, Timer lamp: 1 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : 71]

Trouble shooting 15 OUTDOOR UNIT Error Method:

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 2 :

Check Point 3 :

OKOK

Outdoor unit Heat Ex. liquid temp. thermistor error

Outdoor unit Main PCB Heat exchanger temperature thermistor

When the heat exchanger temperature thermistor open 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 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

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)

If the voltage does not appear, replace Main PCB.

02-17

Resistance Value (k )

Temperature(°C)

Resistance Value (k )

Temperature(°C)

-30 -20 -10 0 10 20 30 40 50

60 70 80

95.6 50.3 27.8 16.1 9.6 6.0 3.8 2.5 1.7

1.2 0.8 0.6

Thermistor Characteristics (Approx. value)

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

THERMISTOR

(DISCHARGE)

THERMISTOR

(PIPE)

THERMISTOR

(OUTDOOR)

BLACK

CN70 CN71

1 2 3 4

1 2 3

BROWN

Indicate or Display:

Outdoor Unit : LED 0.1sec ON/ 0.1sec OFF Indoor Unit : Operation lamp: 7 time Flash, Timer lamp: 3 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : 73]

Trouble shooting 16 OUTDOOR UNIT Error Method:

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 2 :

Check Point 3 :

OKOK

Outdoor temp. thermistor error

Outdoor unit Main PCB Outdoor temperature thermistor

When the 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. 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 2 : Remove connector and check Thermistor resistance value

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)

If the voltage does not appear, replace Main PCB.

02-18

Thermistor Characteristics (Approx. value)

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

Resistance Value (k )

403020100-30 -20 -10Temperature(°C)

Resistance Value (k )

70 8060Temperature(°C)

224.3 115.2 62.3 35.2 20.7 12.6 8.0 5.2

3.5 2.4 1.6 1.2

THERMISTOR

(DISCHARGE)

THERMISTOR

(PIPE)

THERMISTOR

(OUTDOOR)

BLACK

CN70 CN71

1 2 3 4

1 2 3

BROWN

Indicate or Display:

Outdoor Unit : LED 0.1sec ON/ 0.1sec OFF Indoor Unit : Operation lamp: 7 time Flash, Timer lamp: 4 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : 74]

02-19

Trouble shooting 17 OUTDOOR UNIT Error Method:

Trip detection

Detective Actuators:

Detective details:

Outdoor unit Main PCB Compressor

Forecast of Cause :

Check Point 3 : Check Outdoor fan

Check Point 5 : Replace Main PCB

Check Point 1 : Check connections of Outdoor unit electrical components

1. Defective connection of electric components 2. Outdoor fan operation failure

3. Outdoor heat exchanger clogged 4. Compressor failure 5. Main PCB failure

Check if connector is removed.

Check if the terminal connection is loose.

Check erroneous connection. Check if cable is open.

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

Check Point 2 : Check Outdoor fan, Heat exchanger

Is there anything obstructing the air distribution circuit? Is there any clogging of Outdoor Heat Exchanger? Is the Fan rotating by hand when operation is off ?

>> If the fan motor is locked, replace it.

Check Outdoor fan motor. (Refer to Trouble shooting 19)

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

Check Point 4 : Check Compressor

Check Compressor. (PARTS INFORMATION 2)

If Check Point 1 ~ 4 do not improve the symptom, change Main PCB.

Indicate or Display:

Outdoor Unit : LED 0.5sec ON/ 0.5sec OFF Indoor Unit : Operation lamp: 9 time Flash, Timer lamp: 4 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : 94]

Trouble shooting 18 OUTDOOR UNIT Error Method: Compressor rotor position

detection error (permanent stop)

02-20

Detective Actuators:

Detective details:

Forecast of Cause :

Check Point 1 : Check connection of around the Compressor components

Check Point 2: 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 do not improve the symptom, change 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.

OKOK

Check Point 3: Replace Compressor

If Check Point 2 do not improve the symptom, change Compressor.

OKOK

Indicate or Display:

Outdoor Unit : LED 0.1sec ON/ 2sec OFF Indoor Unit : Operation lamp: 9 time Flash, Timer lamp: 5 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : 95]

02-21

Trouble shooting 19

OUTDOOR UNIT Error Method:

Detective Actuators:

Detective details:

Forecast of Cause:

Check Point 3 : Check Outdoor unit fan motor

Outdoor unit fan motor 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.

Read wire DC voltage

Red - Black

White - Black

15 1.5V

CN800

1 2 3 4 5 6 7

BLACK WHITE YELLOW BLUE

RED

FAN MOTOR

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.

150V ~ 340V

Indicate or Display:

Outdoor Unit : LED 5sec ON/ 5sec OFF Indoor Unit : Operation lamp: 9 time Flash, Timer lamp: 7 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : 97]

Detective Actuators:

Detective details:

Forecast of Cause :

OKOK

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

5. Main PCB failure 6. 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.

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

02-22

[ Solenoid coil ] 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.

[ 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.

Check Point 5 : Replace Controller PCB

If Check Point 1- 4 do not improve the symptom, replace Controller PCB of Indoor unit .

Check Point 2 : Check thermistor of Indoor unit

Isn’t it fallen off the holder? Is there a cable pinched?

>> Check characteristics of thermistor, (Refer to Trouble shooting 7,8), If defective, replace the thermistor.

Indoor unit Controller PCB Heat exchanger temperature thermistor Room temperature thermistor 4-way valve

When the indoor heat exchanger temperature is compared with the room temperature, and either following condition is detected continuously two times, the compressor stops. Cooling or Dry operation [Indoor heat exchanger temp.] - [Room temp.] > 10

°C

Heating operation [indoor heat exch

anger temp.] - [Room temp.] < -10°C

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

Trouble shooting 20 OUTDOOR UNIT Error Method:

4-way valve error

Check Point 4 : Check the voltage of 4-way valve

Check the CN 30 voltage of Main PCB

Check if AC198V(AC220V-10%) - 242V(AC220V+10%) appears at CN 30 of Main PCB.

[ Heating operation ]

>> If it is not voltage, Replace Main PCB.

[ Cooling operation ]

>> If it is voltage, Replace Main PCB.

OKOK

Indicate or Display:

Outdoor Unit : No indication Indoor Unit : Operation lamp: 9 time Flash, Timer lamp: 9 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : 99]

Outdoor unit Main PCB Discharge temperature thermistor

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

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

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

* For the characteristics of the thermistor, refer to the "Trouble

shooting 14".

Check Point 4 : Check the discharge thermistor

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 5 : Check the refrigerant amount

Leak check

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

02-23

Check Point 1 : Check if 2-way valve(liquid side) is open.

If the 2-way valve(liquid side) was closed, open the 2-way valve(liquid side) and check operation.

Detective Actuators:

Detective details:

Forecast of Cause :

Trouble shooting 21 OUTDOOR UNIT Error Method:

Discharge temp. error

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

EEV open? Strainer clogging check

(Refer to PARTS INFORMATION 3)

Check Point 2 : Check the EEV, strainer

EEV open? Strainer clogging check

(Refer to PARTS INFORMATION 3)

Check Point 2 : Check the EEV, strainer

Indicate or Display:

Outdoor Unit : Continuously lighting Indoor Unit : Operation lamp: 10 time Flash, Timer lamp: 1 time Flash Economy lamp : Continuous flash. ERROR CODE : [E : A1]

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.

02-24

2-3 TROUBLE SHOOTING WITH NO ERROR CODE

Check Point 3 : Check Electrical components

YESYES

Check the voltage of power supply.

>> Check if AC198 - 242V appears at Outdoor Unit Terminal L - N.

Check Varistor in Power supply PCB (Indoor unit).

>> 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.

Check Fuse of between of Terminal and Power supply PCB (Indoor unit).

>> If Fuse is open, check if the wiring between Terminal and Power supply PCB (Indoor unit) is loose, and replace Fuse.

Check Point 4 : Replace Power supply PCB (Indoor unit)

If Check Point 1- 3 do not improve the symptom, replace Power supply PCB (Indoor unit).

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.

Trouble shooting 23

Forecast of Cause:

Check Point 3 : Check Electrical components

OKOK

YESYES

Check Point 1 : Check Installation Condition

Outdoor Unit - No Power

1. Power supply failure 2. External cause

3. Electrical components defective

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 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.

Check the voltage of power supply.

>> Check if AC198 - 242V appears at Outdoor Unit Terminal L - N.

Check Fuse in Main PCB.

>> If Fuse is open, check if the wiring between Terminal and Main PCB is loose, and replace Fuse.

02-25

Check Point 4 : Replace Main PCB

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

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

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 Inst

allation 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 Point 3 : Check Wired Remote Controller and Controller PCB

>> If it is DC12V, 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) >> Check Indoor unit fan motor. (PARTS INFORMATION 4) If it is normal, replace Controller PCB. If it is abnormal, replace Indoor unit fan motor and Controller PCB.

Check Voltage at CN14 (terminal 1-3) of Controller PCB. (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/ Outdoor installation condition

Pipe (In) Pipe (Out)

OKOK

MPa MPa

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

Does indoor unit fan run on high fan?

Is air filter dirty? Is heat exchanger clogged?

Check if energy save function is operated.

Check if outdoor unit is operating

Check any objects that obstruct the air flow rou

te.

Check clogged Heat 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 & 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)

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

Trouble shooting 26

Forecast of Cause :

Trouble shooting 27

Forecast of Cause:

OKOK

MPa MPa

Abnormal noise

1. Abnormal installation (Indoor/ Outdoor)

2. Fan failure (Indoor/ Outdoor)

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 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 (PARTS INFORMATION 1,2)

Water leaking

1. Erroneous installation 2. Drain hose failure

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?

02-28

SERVICE PARTS INFORMATION 1

MPa 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 Filter PCB, Main PCB, connection of Compressor,and winding resistance. (Refer to the next page).

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

>> 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)

>> If there is no failure, the defect of Compressor can be considered. (Compressor part broken or valve defective.)

Abnormal noise

Defective Compressor can be considered. (due to inside dirt cloggi

or broken component)

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

02-29

2-4 SERVICE PARTS INFORMATION

SERVICE PARTS INFORMATION 2

Check Point 1 : Check Connection

Check Point 2 : Check Winding Resistance

Check Point 3 : Replace Main PCB

Inverter Compressor

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 the symptom does not change with above Check 1, 2, replace Main PCB.

02-30

(WHITE)

(BLACK)

Terminal cover opened

(RED)

AOCG040LBTA

Resistance Value :

0.7 at 25°C

AOCG040LBTA

SERVICE PARTS INFORMATION 3

Check Point 1 : Check Connections

Outdoor unit Electronic Expansion Valve ( EEV )

Check connection of connector ( Loose connector or open cable )

02-31

EXPANSION VALVE COIL

CN40

RED BROWN BLUE ORANGE

YELLOW

WHITE

2 3 4 5 6

1 2 3 4 5 6

Check Point 5 : Check Opening and Closing operation of valve

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

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.

Check Point 2 : Check Coil of EEV

Yellow - Brown

Orange - Red

Blue - Brown

White - Red

Read wire

Resistance value

Check Point 4 : Check voltage from Main PCB.

Check Point 3 : Check noise at start up

at 20°C

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.

12V

RED

BROWN BLUE

ORANGE YELLOW WHITE

1 2 3 4 5 6

CN40

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: Ground 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 (Blue)

DC voltage (Vm)

No function

Ground 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: Ground terminal)

>>If they are short-circuited (below 300 k ), replace Indoor fan motor and Controller PCB.

02-32

Pin number (wire color)

Terminal function (symbol)

1 (Brown)

2 (Yellow)

3 (White)

4 (Black)

6 (Red)

Feed back (FG)

Speed command (Vsp)

Control voltage (Vcc)

Ground terminal (GND)

No function

DC voltage (Vm)

3 . APPENDING DATA

SLIM DUCT type

INVERTER

R410A

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

Long interval

Short interval

No indication

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".

Select appropriate static pressure according to the installation conditions.

( Factory setting)

1-2. Setting the Static pressure

Setting Description

Function Number Setting Value

0 Pa

10 Pa

20 Pa

30 Pa

40 Pa

50 Pa

60 Pa

70 Pa

80 Pa

90 Pa

25 Pa [Standard]

03-02

( Factory setting)

Setting Description

Function Number Setting Value

Standard

Lower control

Slightly warmer control

Warmer control

1-4. Setting the Heater room temperature correction

Depending on the installed environment, the room temperature sensor may require a correction. The settings may be changed as shown in the table below.

1-3. Setting the Cooler room temperature correction

( Factory setting)

Setting Description

Function Number Setting Value

Standard

Slightly lower control

Lower control

Warmar control

Depending on the installed environment, the room temperature sensor may require a correction. The settings may be selected as shown in the table below.

When using floor console installation, change the setting value to "01".

1-5. Setting the Auto restart

Enable or disable automatic system restart after a power outage.

( Factory setting)

Setting Description

Function Number Setting Value

Yes

Auto restart is an emergency function such as for power failer 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.

03-03

1-6. 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

Yes

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 either indoor unit temperature sensor or remote control unit sensor.

1-7. Setting the Remote controller signal code

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

( Factory setting)

Setting Description

Function Number Setting Value

1-8. Setting the External input control

"Operation/Stop" mode or "Forced stop" mode can be selected.

( Factory setting)

Setting Description

Function Number Setting Value

Operation /Stop mode

(Setting forbidden)

Forced stop mode

03-04

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 button and ( ) button simultaneously, press the button to enter the function setting mode.

3-1-2 Procedures to change the Function Setting

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

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

Selecting the Function Number and Setting Value

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

(7) Press the 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 ( ) ( ) buttons to select the Setting Value. (Press the button to switch between the left and right digits.)

Function Number

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

Function Number

Setting Value

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)

03-05

(2) Press the button for more then 5 seconds.

(4) Press the button. (Return to normal display)

Custom code setting for remote controller

(3) Press the ( ) ( ) 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

(1) Press the / button until only the clock is displayed on the remote controller display.

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.)

03-06

SET BACK

SUMOTUWETH FR

(1) Press the SET TEMP. buttons ( ) ( ) and FAN button simultaneously for more than 5 seconds to enter the function setting mode.

(2) Press the SET BACK button to select the indoor unit number.

(3) Press the Set time buttons to select the function number.

(4) Press SET TEMP. buttons ( ) ( ) to select the setting value. The display flashes as shown to the right during setting value selection.

(7) After completing the FUNCTION SETTING, be sure to turn off the power and turn it on again.

(5) Press the TIMER SET button to confirm the setting. Press the TIMER SET button for a few seconds until the setting value stops flashing. If the setting value display changes or if "- -" is displayed when the flashing stops, the setting value has not been set correctly. (An invalid setting value may have been selected for the indoor unit.)

(6) Repeat steps 2 to 5 to perform additional settings. Press the SET TEMP. buttons ( ) ( ) and FAN button simultaneously again for more than 5 seconds to cancel the function setting mode. In addition, the function setting mode will be automatically canceled after 1 minute if no operation is performed.

Unit number of Indoor unit

Function number

SUMOTUWETH FR

Setting value

FUNCTION SETTING METHOD (for Wired remote controller)

CAUTION

After turning off the power, wait 30 seconds or more before turning on it again. The FUNCTION SETTING doesn't become effective if it doesn't do so.

Room temperature thermistor

Temp (°C)

Resistance(k )

Voltage(V)

Temp (°C)

Resistance(k )

Voltage(V)

Temp (°C)

Resistance(k )

Voltage(V)

Temp (°C)

Resistance(k )

Voltage(V)

Discharge thermistor Comp. temperature thermistor

Outdoor heat ex.(middle) thermistor Outdoor heat ex.(outlet) thermistor

Outdoor temperature thermistor

03-07

3-2. Thermistor Resistance Values

3-2-1 INDOOR UNIT

3-2-2 OUTDOOR UNIT

-10.0

-5.0

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

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

-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

-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

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

Temp (°C)

Resistance(k )

Voltage(V)

Indoor heat exchanger thermistor

-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

63.0

1013.1

729.1

531.5

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

11.1

0.23

0.32

0.43

0.56

0.73

0.92

1.14

1.39

1.65

1.93

2.22

2.50

2.77

3.03

3.27

3.49

3.69

3.86

4.01

4.09

3-3-17,Suenaga,Takatsu-ku,Kawasaki 213-8502,Japan

Jun. 2016 Printed in Japan

Fujitsu ARCG040LSTA, AOCG040LBTA Service Instruction

Specifications and Main Features

Frequently Asked Questions

User Manual