Fujitsu ARC90LHTA, ARC72LHTA, AOA72LALT, AOA90LALT Service Instruction

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SPLIT TYPE

AMP Air Conditioning

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ROOM AIR CONDITIONER

DUCT type

INVERTER

SERVICE

INSTRUCTION

Models Indoor unit Outdoor unit

R410A

AR* C72LHTA AR* C90LHTA

AO* A72LALT AO* A90LALT

CONTENTS

AMP Air Conditioning

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1. DESCRIPTION OF EACH CONTROL OPERATION

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

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

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

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

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

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

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

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

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

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

11. AUTO RESTART.........................................................................................................

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

13. TEST OPERATION CONTROL...................................................................................

14. PUMP DOWN..............................................................................................................

15. COMPRESSOR PREHEATING..................................................................................

16. FRESH AIR CONTROL...............................................................................................

17. EXTERNAL ELECTRICAL HEATER CONTROL........................................................

01-01 01-02 01-03 01-04 01-05 01-07 01-08 01-09 01-11 01-11 01-11 01-12 01-12 01-14 01-15 01-15 01-15

18. DEFROST OPERATION CONTROL..........................................................................

19. OFF DEFROST OPERATION CONTROL...................................................................

20. VARIOUS PROTECTIONS...........................................................................................

21. ECONOMY OPERATION.............................................................................................

22. COMPRESSOR STOP CONTROL.............................................................................. 01-22

23. DRAIN PUMP OPERATION........................................................................................ 01-23

24. LOW NOISE OPERATION.......................................................................................... 01-24

25. PEAK CUT OPERATION............................................................................................. 01-24

26. DESCRIPTION OF DISPLAY UNIT............................................................................ 01-25

2. TROUBLE SHOOTING

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

2-1-1 WIRED REMOTE CONTROLLER DISPLAY......................................................

2-1-2 OUTDOOR UNIT DISPLAY................................................................................

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

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

2-4 SERVICE PARTS INFORMATION.............................................................................. 02-32

01-16 01-18 01-19 01-22

02-01 02-01 02-02 02-03 02-27

3. APPENDING DATA

1. FUNCTION SETTING....................................................................................................

2. THERMISTOR RESISTANCE VALUES........................................................................

03-01 03-06

DUCT type

AMP Air Conditioning

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INVERTER

R410A

1 . DESCRIPTION OF EACH CONTROL OPERATION

1-1. COOLING OPERATION

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1-1-1 COOLING CAPACITY CONTROL

A sensor (room temperature thermistor) built in the indoor unit will usually perceive difference or variation between a set temperature and present room temperature, and controls the operation frequency of the compressor. * If the room temperature is 2°C higher than a set temperature, the compressor operation frequency will attain to maximum performance.

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

* 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.

( Table 1 : Compressor Frequency Range )

minimum frequency

maximum frequency

AO* A72LALT AO* A90LALT

28rps 77rps 28rps 86rps

( Fig. 1 : Limit of Maximum Frequency based on Outdoor Temperature )

When the room

temperature rises Outdoor air temperature

34°C

30°C

19°C

10°C

0°C

When the room temperature drops

A zone

B zone

C zone

D zone

E zone

F zone

36°C

32°C

21°C

12°C

2°C

Fan speed mode

AO* A72LALT

AO* A90LALT

A zone B zone C zone D-F zone

Hi Me Lo

77rps 77rps 60rps 51rps

86rps 86rps 77rps 66rps

56rps 56rps 51rps 48rps

71rps 71rps 66rps 56rps

51rps 51rps 48rps 48rps

66rps 66rps 56rps 53rps

01-01

1-2. HEATING OPERATION

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1-2-1 HEATING CAPACITY CONTROL

A sensor (room temperature thermistor) built in the indoor unit 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 3°C than a set temperature, the compressor operation frequency will attain to maximum performance.

* If the room temperature is higher 2.5°C 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 Table2. However, the maximum frequency is limited in the range shown in Fig. 2 based on the outdoor temperature.

( Table 2 : Compressor Frequency Range )

minimum frequency

maximum frequency

AO* A72LALT AO* A90LALT

30rps 85rps 30rps 100rps

( Fig.2 : Limit of Maximum Frequency based on Outdoor Temperature )

Outdoor air temperature

19°C

14°C

C zone

B zone

A zone

17°C

12°C

AO* A72LALT

AO* A90LALT

Fan speed mode

A zone B zone C zone

Hi Me Lo

90rps 79rps 70rps

100rps 90rps 79rps

01-02

1-3. DRY OPERATION

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1-3-1 INDOOR UNIT CONTROL

The compressor rotation speed shall change according to set temperature and room temperature variation which the room temperature sensor of the indoor unit has detected as shown in the Fig 3.

( Table 3 : Compressor Rotational Speed Range )

AO* A72LALT

AO* A90LALT

X zone Y zone X zone Y zone

42rps

47rps

( Fig.3 : Compressor Control based on Room Temperature )

Room temperature drops

Ts+0.5 °C

X zone

Compressor : ON

Ts+1.5 °C

Y zone

Compressor : OFF

Room

temperature rises

( Fig 4 : Indoor Fan Control )

Compressor

OFF

Ts : Setting temperature

Indoor fan

DRY air flow

S-Lo

OFF

10 30 60 360 120 360 120 10 30

(sec)

01-03

1-4. AUTO CHANGEOVER OPERATION

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When the air conditioner is set to the AUTO mode by remote control, operation starts in the optimum mode from among the HEATING, COOLING 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.

(1) When operation starts, only the indoor fan is operated for 2 minute. (Air flow mode: S-Lo) After 2 minute, depends on the room temperature and outdoor unit's operation mode, the operation mode is selected in accordance with the below. (During 3 minutes ST, Air flow mode : S-Lo)

( Fig 5 : Operation mode selection based on Outdoor Temperature )

C zone

Outdoor temperature

( Table 4 : Operation mode selection table )

Room temperature :Tr

32°C

B zone

-10°C A zone

Outdoor temperature zone

A zone

B zone

C zone

Tr > Ts +2 °C

Ts +2 °C > Tr > Ts -2 °C

Ts -2 °C > Tr

Ts : Setting temperatureTr : Room temperature

(2) When COOLING or HEATING was selected at (1), the air conditioner operates in the room temperature correct coefficient value is 0°C.

(3) When the compressor was stopped for 6 consecutive minutes by the temperature control function after the COOLING or HEATING operation mode was selected at (1) above, operation is switched to MONITORING and the operation mode is selected again.

MONITORING

HEATING

COOLING

MONITORING

HEATING

COOLING

MONITORING

01-04

1-5. INDOOR FAN CONTROL

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1. Fan speed

( Table 5 : Indoor Fan Speed )

AR* C72LHTA

Operation

mode

Intermittent

S-Lo

Fan

motor

1 2 1 2 1 2 1 2 1 2

Standard (72Pa)

HEATING

900 940 790 830 620 760

COOLING

900 940 790 830 620 760 400 440 350

DRY

620 760

Static Pressure 1 (0Pa)

HEATING

790 830 620 760 580 6

COOLING

790 830 620 760 580 620 400 440 350 250

DRY

580 620

Static Pressure 2 (50Pa)

HEATING

860 900 760 800 560 760

COOLING

860 900 760 800 560 760 400 440 350 250

Static Pressure 3 (150Pa)

DRY

HEATING

1040 1080

900

940 560 760

760

800

COOLING

1040 1080

900 940 760 800 420 460 300 400

DRY

760 800

Operation

mode

Intermittent

S-Lo

Fan

motor

1 2 1 2 1 2 1 2 1 2

AR* C90LHTA

Operation

mode

Intermittent

S-Lo

Fan

motor

1 2 1 2 1 2 1 2 1 2

Static Pressure 5 (250Pa)Static Pressure 4 (200Pa)

HEATING

1110 1150

950 990 830 870

COOLING

1110 1150

950 990 830 870 440 480 300 400

DRY

830 870

HEATING

1190 1230 1040 1080

870 910

COOLING

1190 1230 1040 1080

870 910 460 500 300 400

DRY

870 910

Standard (72Pa) Static Pressure 1 (0Pa) Static Pressure 2 (50Pa) Static Pressure 3 (150Pa)

HEATING

910 950 820 860 630 810

COOLING

910 950 820 860 630 810 400 440 350 250

DRY

630 810

HEATING

820 860 630 850 520 760

COOLING

820 860 630 850 520 760 400 440 350 250

DRY

520 760

HEATING

890 930 780 820 600 760

COOLING

890 930 780 820 600 760 400 440 350 250

DRY

600 760

HEATING

1040 1080

920

960

780

820

COOLING

1040 1080

920 960 780 820 420 460 300 400

DRY

780 820

Operation

mode

Intermittent

S-Lo

Fan

motor

1 2 1 2 1 2 1 2 1 2

HEATING

1120 1160

980

1020

840 880

COOLING

1120 1160

980

1020

840 880 440 480 300 400

2. FAN OPERATION

The airflow can be switched in 4 steps such as Auto, Lo, Me, Hi, while the indoor fan only runs.

DRY

840 880

Static Pressure 5 (250Pa)Static Pressure 4 (200Pa)

HEATING

1190 1230 1040 1080

890 930

COOLING

1190 1230 1040 1080

890 930 460 500 300 400

01-05

DRY

890 930

3. COOLING OPERATION

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Switch the airflow [Auto], and the indoor fan motor will run according to a room temperature, as shown in Fig.6. On the other hand, if switched in [Hi] ~ [Lo], the indoor motor will run at a constant airflow of [COOL] operation modes Lo, Med, Hi, as shown in Table 5.

( Fig.6 : Airflow change - over ( COOLING : Auto ) )

Tr : Room temperature Ts : Setting temperature

Tr-Ts > 2 °C

2 °C > Tr-Ts

When the room temperature drops

Tr-Ts > 2.5 °C

2.5 °C > Tr-Ts

When the room temperature rises

4. HEATING OPERATION

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 in [Hi] ~ [Lo], the indoor motor will run at a constant airflow of [HEAT] operation modes Lo, Me, Hi, as shown in Table 5.

( Fig.7 : Airflow change - over ( HEATING : Auto ) )

Tr-Ts > - 2 °C

- 2 °C> Tr-Ts

When the room temperature rises

When the room temperature drops

Tr-Ts > - 2.5 °C

- 2.5 °C> Tr-Ts

Tr: Room temperature Ts : Setting temperature

5. COOL AIR PREVENTION CONTROL (HEATING mode)

Indoor fan motor operates in set fan mode when the indoor unit heat-exchanger temperature becomes more than 27°C, and it operates until the compressor stops with a set mode maintained. (The fan stops until the indoor unit heat-exchanger temperature reaches 27°C)

Pattern 1

When the Heating operation starts.

When thermo-OFF and fan stops after defrosting.

Indoor heat exchanger temperature

Setting fan mode

27°C

S-Lo

24°C

Stop

During thermo-OFF

Indoor heat exchanger temperature

27°C

Pattern 2

Setting fan mode

S-Lo

6. DRY OPERATION

Refer to the Fig.4 and Table 5. During the DRY mode operation, the fan speed setting can not be changed.

01-06

1-6. OUTDOOR FAN CONTROL

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1. Outdoor Fan Motor

The outdoor fan speed is decided depending on the operation mode and the outdoor temperature.

The compressor and the fan start-up at the same time, and the fan stops after the compressor stops and 60 seconds has passed.

The fan doesn't operates for 5 seconds after the fan stops.

The fan operates at 500 rpm for 20 seconds after the start-up. However, the fan operates at 300rpm for 20 seconds when the initial rotational speed is 300rpm or less.

Following table shows the fan speed of the outdoor unit.

(Table 6 : Fan speed of the outdoor unit)

Fan speed [ rpm ]

Fan step

16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1

Fan step

6 5 4 3 2 1

COOLING / DRY mode HEATING mode

AO* A72LALT AO* A90LALT AO* A72LALT AO* A90LALT

850 850 820 730 620 500 420 360 320

300 intermittent 1 intermittent 2 intermittent 3 intermittent 4 intermittent 5 intermittent 6

Fan mode

intermittent 1 intermittent 2 intermittent 3 intermittent 4 intermittent 5 intermittent 6

860 860 830 730 620 500 420 360 320

300 intermittent 1 intermittent 2 intermittent 3 intermittent 4 intermittent 5 intermittent 6

Fan speed 0 rpm

duration time T ( sec )

6 12 19 26 33 40

intermittent 1 intermittent 2 intermittent 3 intermittent 4 intermittent 5 intermittent 6

880 840 810 730 600 500 420 360 320 300

Fan speed 300 rpm duration time ( sec )

880 840 810 730 600 500 420 360 320

300 intermittent 1 intermittent 2 intermittent 3 intermittent 4 intermittent 5 intermittent 6

(Fig.8 : Intermittent fan mode)

Fan speed

Normal fan step

300 rpm

0 rpm

When switched from normal fan step to intermittent fan step, always start from 300rpm /7sec. When there was a change during intermittent step 1-6, switching is performed at the time the current speed duration time reaches time-up.

Intermitten fan step

7 sec 7 sec 7 sec

[ T ] sec [ T ] sec

Time

01-07

1-7. COMPRESSOR CONTROL

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1. OPERATION SPEED RANGE

The operation speed of the compressor is different based on the operation mode as shown in Table 7.

(Table 7 : Compressor Operation Speed Range)

AO* A72LALT AO* A90LALT

COOLING

Min

28rps 28rps

Max

77rps 86rps

Min

30rps 30rps

HEATING

Max

85rps 100rps

42rps 47rps

2. OPERATION SPEED CONTROL AT START UP (Common in all models)

The compressor speed soon after the start-up is controlled as shown in Fig.9. (Fig.9 : Compressor Control at Start-up)

< Normal start-up >

Compressor Upper Limit Speed[ rps ]

65 55 43 33

180 240

300

Time [ sec ]

DRY

< Cold start : Heating mode >

The compressor start-up by Cold start when corresponding to any of the following condition. (1) First start-up after power-on (2) Compressor temperature < 31°C (3) 8 hours has passed after the compressor stop

Compressor Upper Limit Speed[ rps ]

65 55 43 33

150 210

120

Time [ sec ]

01-08

1-8. TIMER OPERATION CONTROL

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1-9. TIMER OPERATION CONTROL1-9. TIMER OPERATION CONTROL

1-8-1 Wired Remote Controller

AR-WAE1E

ON / TIMER OFF / TIMER

WEEKLY TIMER

TEMPERATURE SET BACK TIMER

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. WEEKLY TIMER

2-1. WEEKLY TIMER

Use this timer function to set operating time for each day of the week. The weekly timer allows up to two ON and OFF time to set up per day.

Operation mode

Stop mode

Set time

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.

Operation mode

Stop mode

Set time Set time Set time

Operation mode

Stop mode

01-09

2-2. DAY OFF setting

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

Normal

DAY OFF

Operation mode

Stop mode

Preceding day Next day

Setting day

Stop mode

Next day setting

DAY OFF

Stop mode

Operation mode

Stop mode

Preceding day Next daySetting day

Operation mode

Stop mode

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

3. TEMPERATURE SET BACK TIMER

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 COOLING/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.

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

( Fig.10 : Detail of set back timer)

SET BACK setting

Operation temperature

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

26°C

22°C 26°C

24°C 22°C

ON OFF OFFON

Chenge the setting temperature: 22°C 24°C

01-10

1-9. ELECTRONIC EXPANSION VALVE CONTROL

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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 speed, the temperatures detected by the discharge temperature sensor, the indoor heat exchanger sensor

(1) Pulse range of EEV

, the outdoor heat exchanger sensor

, and the outdoor temperature sensor.

Pulse range

70 ~ 500 pulse

60 ~ 500 pulse

All Models

Operation

COOLING / DRY

HEATING

(2) The EEV is set up at 500 pulses when the compressor is stopped. (3) Initialization (Input of 528 pulses toward closing direction) is operated under

the following condition.

* When the power is turned on. * 4 hours has passed since the last initialization, and 3 minutes has passed after

the compressor stop. (If 12 hours has passed since the last initialization, the compressor is compulsorily stopped.)

1-10 PREVENT TO RESTART FOR 3 MINUTES ( 3 MINUTES ST )

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

1-11. AUTO RESTART

When the power was interrupted by a power failure, etc. during operation, the operation contents at that time are memorized and when power is recovered, operation is automatically resumed with the memorized operation contents.

(Table 8 : Operation contents memorized when the power is interrupted)

Wired remote controller

(When Memory Backup : Disable) Operation mode Set temperature Set air flow

Thermistor detected position

Timer mode

*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.

Wired remote controller (When Memory Backup : Enable)

OFF Timer ON Timer WEEKLY Timer T

emperature

SET

BACK Timer

: Memorize : Not memorize

01-11

1-12. 4-WAY VALVE EXTENSION SELECT

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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.

1-13. TEST OPERATION CONTROL

With Wired Remote Controller

Under the condition where the air conditioner stops, press the MASTER CONTROL button and the FAN CONTROL 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.

With Outdoor Unit

(1) Turn on the power of the outdoor unit and enter standby mode. POWER/MODE Lamp lights up. (ERROR lamp is off.)

(2) Press the MODE/EXIT button (SW107) once.

LED105 LED104 LED105 LED104

POWER/MODE Lamp (LED101)

MODE/EXIT button (SW107)

SELECT button (SW108)

ENTER button (SW109)

POWER MODE

LED101

(GREEN)

LED105 LED104

MODE

SELECT

/EXIT

SW108

SW107

ERROR

LED102

(RED)

PUMP

ENTER

DOWN

SW109 SW102

ERROR Lamp (LED102)

7 Segment LED Lamp (LED105 and 104)

DIP switch (Do not operate)

SW101

PUMP DOWN button (SW102) (Do not operate in this chapter)

(3) Press the SELECT button (SW108), and display "F3" on the LED104.

(Setting mode)

LED105 LED104 LED105 LED104 LED105 LED104 LED105 LED104

*1 *1

(The display of the LED104 changes each time the SELECT button is pressed.)

*1: The "F1" and "F9" modes are used for maintenance, so do not set them in regular operation.

(Function mode)

(4) When "F3" appears on the LED104, press the ENTER button (SW109).

LED105 LED104 LED105 LED104

A flashing display appears on the LED105, and the flashing display of • gF3• h on the LED104 go out.

01-12

(5) Press the SELECT button (SW108), and display the code number of the mode you want to get on the LED105.

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Cooling test operation Heating test operation Test operation stop

LED105 LED104 LED105 LED104 LED105 LED104

*2 *2 *2

*2: Numbers other than 00-02 are used during maintenance. Please do not use during normal operation.

(6) After confirming the operation mode you want to set, press ENTER button (SW109) for more than 3 seconds. Ex.) To select the cooling test operation setting.

LED105 LED104 LED105 LED104

Once "done" has displayed, operation will start after a few minutes. With this, setting is complete. After operation has started, verify according to "9.3. Checklist" provided below. If you want to stop during test operation, set to test operation stop described in (5) above and execute.

(7) After the completion of test operation, turn off the power, attach electrical components cover and install front panel of outdoor unit.

Note

Test run will finish after about 60 minutes automatically.• Test run may be stopped before operating for 60 minutes if an error occurs after a starting test run.• Switching between heating and cooling is not possible during test operation.

• If you want to change the operation mode, stop the test operation, and change the operation mode once again with mode selection of step (5). If switching between heating and cooling is done during test operation, display as per the right figure will appear and settings will not change. * After 5 seconds since the display of right figure, you can return to screen of step (5) by holding the "Enter" switch.

LED105 LED104

01-13

1-14. PUMP DOWN

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Confirm that the power is off, and the than (1) open the service panel. Turn the power on.(2) Check that stop valves of liquid side and gas (3) side are fully and properly open. Hold PUMP DOWN button (SW102) for over 3 seconds.(4) 7 Segment LED of board on outdoor unit will fl ash, and compressor will start the operation.

LED105

LED104

Fan of indoor unit will start the operation automatically.•

POWER/MODE lamp

MODE/EXIT button

(Do not operate in this chapter.)

SELECT button

(Do not operate in this chapter.)

POWER

ERROR

MODE

LED101

LED102

(GREEN)

(RED)

LED105 LED104

MODE

/EXIT

SW107

SELECT

SW108

PUMP

ENTER

DOWN

SW109 SW102

SW101

PUMP DOWN button

ENTER button

(Do not operate in this chapter.)

Compressor and outdoor fan will start the operation automatically.• It you want to stop pump down operation once it has started, hold • PUMP DOWN button (SW102) again for over 3 seconds.

LED display of outdoor unit board will light-up with the display of “rUn” after around 5 minutes of the start of (5) compressor operation. At this time, firmly close the three-way valve of liquid side immediately.

If the valve on liquid side is not closed at this stage, • pump down will not be possible.

LED105

LED104

Step (5)

Step (6) Closing direction

Closing direction

LED display of outdoor unit board will change as (6) shown in the right fig ure after around 2-7 minutes of the start of compress or operation. At this time, fir mly close the three-way valve of gas side immediately.

LED105

LED104

Hexagon wrench

Liquid pipe

ERROR lamp

7 Segment LED Lamp

DIP switch (Do not operate.)

Gas pipe

If the valve on gas side is not closed at this stage, refrigerant

• may runoff through pipes after the compressor is stopped.

After “End” displays, compressor and outdoor fan will automatically stop after around 1 minute.(7)

LED105

LED104

If pump down operation has ended normally (LED display figure •

outdoor unit will remain stopped until the power

supply is disconnected.

Turn the power off. PUMP DOWN is comoleted.(8)

Note

For performing pump down once again after pump down task has failed and compressor has automatically stopped; •

open the close three-way valve (both liquid and gas side), disconnect the power supply at once and restore it after 2-3 minutes, and then perform pump down operation. For restarting the operation after the completion of pump down operation; open the close three-way valve (both • liquid and gas side), disconnect the power supply at once and restore it after 2-3 minutes, and make sure to perform test operation in “Cooling”. If an error occurs during pump down operation; as shown in • the right figure, “E.98.” (pump down error) will appear. In such case, recover the refrigerant from service port.

POWER/MODE lamp: OFF

POWER

ERROR

MODE

LED101

LED102

(GREEN)

(RED)

LED105 LED104

ERROR lamp: ON

7 Segment

LED Lamp

on the left),

01-14

1-15. COMPRESSOR PREHEATING

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When 30 minutes has passed after power-on or operation stop, the preheating is started according to the outdoor unit heat exchanger (outlet) temperature as shown in Fig.11. It applies the current to compressor and the compressor is heated. (By heating the compressor, warm air is quickly discharged when operation is started.) When operation was started, the preheating ends.

(Fig 11 : Condition of the compressor preheating)

When outdoor unit heat exchanger (outlet)

OFF

temperature rises

-3°C

-5°C

When outdoor unit heat exchanger (outlet) temperature drops

1-16. FRESH AIR CONTROL

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

(Fig 12 : Fresh Air control)

Fan motor (Indoor unit)

Control signal (for Fresh Air)

ON OFF

12V

1-17. EXTERNAL ELECTRICAL HEATER CONTROL

The External Electrical Heater operates when it meets all the following conditions.

Model type : Heat pump Operation mode : Heating mode Compressor : ON Indoor fan : ON Room temperature zone : B zone

(Fig 13 : External Electrical Heater control)

Ts : Setting temperature

Heater : OFF ( A zone )

Ts -3°C

Heater : ON ( B zone )

Ts -12°C

Heater : OFF ( C zone )

When the room temperature drops

When the room temperature rises

Ts -1°C

Ts -10°C

Room temperature

zone in Heating

Control signal

(for

External Heater)

It operates only in Heating mode and when the indoor fan operates. (However, S-Lo is excluded)

B zone

A / C zone

OFF

12V

01-15

1-18. DEFROST OPERATION CONTROL

AMP Air Conditioning

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1. CONDITION OF STARTING THE DEFROST OPERATION

The defrost operation starts when the outdoor heat exchanger temperature sensor detects the temperature lower than the values shown in Table 9.

(Table 9 : Condition of starting Defrost Operation)

Condition of 1st defrost operation

Compressor contiguous operation time

Compressor integrating operation time

Below 10min. Above 10min.

Less than 22min.

22 to 62min. 62 to 105min. After 105min.

Operation temperature

Does not operate

Below - 9°C Below - 3°C Below - 1°C

Condition of 2nd defrost operation

Compressor contiguous operation time

Compressor integrating operation time

Operation temperature

Below 10min. Above 10min.

Less than 35min.

Does not operate

36 to 105min. After 105min.

Below - 5°C Below - 1°C

Condition of Integrating defrost operation)

Compressor contiguous operation time

Compressor integrating operation time

Operation temperature

Below 10min. Above 10min.

Less than 105min.

Does not operate

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.

After 105min. (For long continuous operation)

Below - 1°C

Less than 10min. (For intermittent operation)

OFF count of the comp.

40 times

2. CONDITION OF THE DEFROST OPERATION COMPLETION

Defrost operation is released when the conditions becomes as shown in Table 10.

( Table 10 : Condition of defrost release )

Release Condition

Compressor operation time has passed 15~20min. or High pressure sensor detects above 2.09MPaG.

01-16

3. Defrost Flow Chart

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

Heating operation start : Compressor ON

(Not defrosted for 10 minutes)

(In case of 1st defrost)

Compressor integrating operation: Over 22 minutes to below 62 minutes

Outdoor heat exchanger temperature: Below - 9°C

Outdoor temp Outdoor heat exchanger temperature: Above 5 degC

(In case of 2nd and later defrost)

Compressor integrating operation: Over 62 minutes

Outdoor heat exchanger temperature: Below - 3°C

Compressor integrating operation: Over 35 minutes

Outdoor heat exchanger temperature: Below - 5°C

(Integrating defrost (Constant monitoring)

Compressor OFF count : 40 times

Compressor integrating operation: Over 105 minutes

Outdoor heat exchanger temperature: Below - 1°C

Defrost start

Defrost Indicator. is displayed on the wired RC

Outdoor fan : OFF Compressor speed : 0 rps EEV : AO*A72LALT : 480 or 500 pls AO*A90LALT : 350 pls 4-way valve : OFF Outdoor fan : OFF Compressor speed AO*A72LALT : 70~95rps AO*A90LALT : 100rps

Compressor operation time has passed 15~20min. or High pressure sensor detects above 2.09MPaG.

Defrost end

01-17

1-19. OFF DEFROST OPERATION CONTROL

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When operation stops in the HEATING mode, if frost is adhered to the outdoor unit heat-exchanger, the defrost operation will proceed automatically. In this time, if is displayed on the wired RC, the outdoor unit will allow the heat-exchanger to defrost, and then stop.

1. OFF DEFROST OPERATION CONDITION

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

2. OFF DEFROST END CONDITION

Release Condition

Compressor operation time has passed 15~20min. or High pressure sensor detects above 2.09MPaG.

OFF Defrost Flow Chart

HEATING operation stops

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

Defrost start

Defrost Indicator: is displayed on the wired RC

Compressor operation time has passed 15~20min. or High pressure sensor detects above 2.09MPaG.

Defrost end

01-18

1 -20. VARIOUS PROTECTIONS

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1. DISCHARGE GAS TEMPERATURE OVER RISE PREVENTION CONTROL

1-1. Discharge Temperature Protection 1

(a). When the discharge temperature becomes more than 115°C, the compressor is stopped under all conditions. (b). The compressor restarts after 7 minutes has passed from the protection stop by (a). (c). The error is displayed and the compressor stops when the discharge temperature becomes more than 115°C again within 24 hours after the restart by (b). [Permanent stop]

1-2. Discharge Temperature Protection 2

(a). When the discharge temperature becomes more than 105°C, the compressor speed -10 rps, and it continues the speed -10 rps every 2 minutes until the temperature becomes less than 105°C. (b). When the discharge temperature becomes less than 100°C,

(Fig 14 : Discharge temperature control)

Discharge temperature

115°C

Compressor stop

-10 rps every 2 minutes

105°C

the protection control of the compressor speed is released.

100°C

Release of protection

2. COMPRESSOR TEMPERATURE PROTECTION CONTROL

(a). When the compressor thermistor value becomes more than 112°C, the compressor is stopped under all conditions. (b). When 3 minutes has passed after the protection stop by (a), the compressor is restarted. (c). When the compressor thermistor value becomes more than 112°C again within 24 hours after the restart by (b), the error is displayed and the compressor is stopped. [Permanent stop]

3. LOW PRESSURE PROTECTION CONTROL

3-1. Low Pressure Protection 1 (For Cooling and Heating)

<After the compressor start-up and 1 minute has passed> (a).The detected value of pressure sensor is 0.02MPaG or less,

continues for 5 minutes, the compressor is stopped. (b). When 7 minutes has passed and low pressure sensor detects value is more than 0.05MPaG after the protection stop by (a), the compressor restarts. (c).When the protection (a) operates 5 times within 2 hours after the restart by (b), the error is displayed and the compressor stops. [Permanent stop]

(Fig 15 : Low pressure protection 1)

Pressure

0.05MPaG

0.02MPaG

Release of protection

Compressor stop

Hold

3-2. Low Pressure Protection 2

Anti Freezing Protection (For Cooling mode)

(a).When the low pressure value becomes 0.68MPaG or less continues for 1 minute, the compressor speed -8 rps.

(b). When the low pressure value becomes 0.68MPaG or less after the protection (a), the compressor continues speed -8 rps

every 1 minute until the detected value becomes more than

0.68MPaG. (c). When the low pressure value becomes more than 0.78MPaG, this protection is released.

01-19

(Fig 16 : Anti freezing protection)

Pressure

0.78MPaG

Release of protection

Hold

0.68MPaG

-8 rps every 1 minute

4 . HIGH PRESSURE PROTECTION CONTROL

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4-1. Abnormal Stop

(a). When the high pressure value becomes more than 4.10 MPaG, the compressor is stopped under all conditions. (b). When 3 minutes has passed after the protection stop by (a), and high pressure value

becomes *[ A ] MPaG or less, the protection is released and the compressor is restarted.

Cooling

3.8 3.0

Heating

4-2. Cooling Pressure Over Rise Protection

(a). When the high pressure value becomes more than 4.00MPaG, the compressor speed

-5 rps every 2 minutes until it becomes 4.00MPaG or less. (b). When the high pressure value becomes 3.80MPaG or less, the protection is released.

(Fig 17 : Cooling pressure over rise protection)

Pressure

4.10MPaG

4.00MPaG

3.80MPaG

*During protection : Compressor speed is holded, or when a lower speed is directed, it accedes it.

During release of protection : Compressor operates according to the direction speed.

Compressor stop

-5 rps every 2 minutes

*Hold

Release of protection

4-3. Limitation of the Compressor Upper Limit Speed

(a). The compressor upper limit speed is controlled by high pressure value as shown in Fig 18. (b). The lowest upper limit speed is given to priority compared with other controls.

(Fig 18 : Limitation of the compressor upper limit speed)

High pressure

(Threshold value)

3.80MPaG

3.30MPaG

3.00MPaG

High pressure = 1.25 Low pressure + 2.125

80 rps

90 rps

95 rps

100 rps

Low pressure

01-20

6. HEATING OVERLOAD PROTECTION

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In Heating mode, the compressor speed is controlled as following based on the detection value of the indoor heat-exchanger temperature sensor and pressure sensor.

6-1. High Temperature Release Control <Indoor unit control>

(Fig 19 : High temperature release control by indoor unit)

When Indoor unit heat-exchanger temperature rises

53°C

B zone

Refer to Table 11

When Indoor unit heat-exchanger temperature drops

50°C

Azone

(Table 11: Compressor Operation)

73 rps~ 70 rps

B zone

AO*A72LALT

B zone

AO*A90LALT

A zone

6-2. High Pressure Release Control <Outdoor unit control>

(a). When the high pressure value becomes more than 3.50MPaG, the compressor speed

-7 rps every 1 minute until it becomes 3.50MPaG or less. (b). When the high pressure value becomes 3.00MPaG or less, the protection is released.

43~70 rps Speed down every 2 minutes 34~40 rps 32 rps for 2 minutes 28~32 rps Stop

82 rps~ 79 rps 45~79 rps Speed down every 2 minutes 34~42 rps 32 rps for 2 minutes 28~32 rps Stop

Normal Heating Control

(Fig 20 : High pressure release control)

Pressure

4.10MPaG

3.50MPaG

3.00MPaG

*During protection : Compressor speed is holded, or when a lower speed is directed, it accedes it.

During release of protection : Compressor operates according to the direction speed.

Compressor stop

-7 rps every 1 minute

*Hold

Release of protection

7 . CURRENT RELEASE CONTROL

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

01-21

4 . LOW VOLTAGE PROTECTION

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When the temporary blackout, the load current is reduced to delay the switching power-off, and reset of microcomputer is delayed.

A low voltage signal is detected every 1msec.

(Table 12 : Low voltage protection)

Operation

Compressor : stop Fan : stop

Restart

Protection operate

Protection release

Condition

When level [ L ] is detected 3msec more continuously

When level [ H ] is detected 2msec more continuously

1-21. ECONOMY OPERATION

At the maximum output, ECONOMY OPERATION is approximately 70% of normal air conditioner operation for Cooling and Heating. When ECONOMY OPERATION is performed during the Cooling mode, dehumidification is improved. This function is especially convenient when you want to remove the humidity in the room without significantly lowering the room temperature.

If the room is not cooled (or heated) well during economy operation, select normal operation. During the monitor period in the AUTO mode, the air conditioner operation will not change

to ECONOMY OPERATION even if ECONOMY OPERATION is selected by pressing the ECONOMY button.

1-22. COMPRESSOR STOP CONTROL

When the detection value of outdoor temperature sensor is lower than temperature in the table below, the compressor is stopped.

(Table 13 : Operation temperature of compressor stop control)

Temperature

Operation temperature

Release temperature

COOLING

- 20°C

- 15°C

HEATING

01-22

1-23. DRAIN PUMP OPERATION

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During COOLING / DRY mode

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 functions:

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)

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

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.

(Fig 21 : Detail of Drain Pump Operation)

Compressor

Drain Pump

ON OFF

3 minutes

Less than 3 minutes

Float Switch

Compressor

Indoor Fan

Drain Pump

During HEATING / FAN mode / Stop operation

ON OFF

3 minutes ST

ON OFF

3 minutes

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. )

(Fig 22 : Stop operation on Heating and Fan mode)

Float Switch

Drain Pump

ON OFF

3 minutes

01-23

1-24. LOW NOISE OPERATION

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The compressor speed and the outdoor unit fan speed are limited to reduce the operation noise by External Input.

During the LOW NOISE OPERATION, "CURRENT OVERLOAD OPERATION", "ECONOMY OPERATION" and "PEAK CUT OPERATION" are effective, and the outdoor unit operates by lowest current of them.

However, during the DEFROST OPERATION, the compressor operates by the speed for DEFROST OPERATION.

( Table 14 : Detail of Low Noise Operation )

Low Noise Mode

Cooling

Outdoor Fan Upper Limit Speed ( rpm )

620

Compressor Speed ( rps )

AO* A72LALT AO* A90LALT

LEVEL 1

Heating Cooling

600 500

69 46

70 54

LEVEL 2

Heating Cooling

500 420

45 43

48 45

LEVEL 3

Heating

500

*The performance drops when operating in the LOW NOISE OPERATION.

1-25. PEAK CUT OPERATION

The Current Value is limited to reduce the power consumption by External Input.

During the PEAK CUT OPERATION, "CURRENT OVERLOAD OPERATION", "ECONOMY OPERATION" and "LOW NOISE OPERATION" are effective, and the outdoor unit operates by lowest current of them.

However, this function becomes invalid during DEFROST OPERATION. (Table 15 : Outline of Peak Cut Operation )

PEAK CUT LEVEL

Peak Cut

For Rated Capacity

*Percentage is rated electrical power ratio.

LEVEL 1 LEVEL 2 LEVEL 3 LEVEL 4

Forced

thermostat-OFF

01-24

75%50%

100%

1-26. DESCRIPTION OF DISPLAY UNIT

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1-26-1 Field setting switches

Remove the front panel of the outdoor unit and the cover of the electrical component box to access the print circuit board of the outdoor unit. Print circuit board switches for various settings and LED displays are shown in the figure.

POWER/MODE Lamp (LED101) It lights up when power on.

LED105 LED104

MODE/EXIT button (SW107)

SELECT button (SW108)

Outdoor unit printed circuit board

MODE

SELECT

/EXIT

SW108

SW107

ENTER button (SW109)

1-26-2 Normal operation mode

Operation status is displayed in 7 Segment LED Lamp (LED105 and LED104).

Mode

Operation

CODE

C L H t

Cooling Heating

d F During defrosting operation P C During power saving operation L n During low noise operation

Stopped

DESCRIPTION

POWER

MODE

LED101

(GREEN)

ENTER

SW109 SW102

ERROR Lamp (LED102) It will flash rapidly in case of an error.

ERROR

LED102

(RED)

7 Segment LED Lamp (LED105 and LED104)

Status of the unit will display.

DIP switch (SW101)

PUMP DOWN

SW101

PUMP DOWN button (SW102)

1-26-3 Error display mode

10.2.1. Method for ascertaining the errors

(1) When an error has occurred, ERROR LED (LED102) will flash rapidly, and as shown in the figure below, 7 Segment LED will alternately display "Err" and number of errors.

Error display

LED105 LED104 LED105 LED104

(2) Error contents will display if ENTER button (SW109) is pressed in the state of (1). For error contents, refer to the list of error code described later.

LED105 LED104

Display number of errors

Alternate display

Ex.) "E.0C" is displayed. Discharge temperature thermistor error.

01-25

(3) If SELECT button (SW108) is pressed in the state of (2), contents of all the errors will display.

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Error 1. Error 2. Error 3.

LED105 LED104 LED105 LED104 LED105 LED104

(4) If ENTER button (SW109) is pressed, it will return to state of (1). If no action is taken, it will return to the state of (1) after 60 seconds.

Note

•

In case the errors are resolved, it will return to "Normal operation mode" described in 10.1. earlier.

Error code check table

CODE DESCRIPTION

E. 06. Outdoor heat exchanger temperature sensor (outlet) error E. 0A. Outdoor temperature sensor error E. 0C. Outdoor discharge pipe temperature sensor error E. 0E. Heat sink thermistor (inverter) error E. 0F. Discharge temperature error E. 13. Indoor signal error E. 15. Compressor temperature sensor error E. 16. Pressure switch error, Pressure sensor error E. 17. IPM protection E. 1A. Compressor location error E. 1b. Outdoor fan error E. 24. Excessive high pressure protection E. 2b. Compressor temperature error E. 2E. Inverter error E. 2F. Low pressure error E. 98. Pump down error E. 99. Indoor unit error condition

LED lamp :

0 1 2 3 4 5 6 7 8 9

A b C d E F H i J L

n o P r S t U v y -

01-26

1-26-6 Field Setting and Monitor Mode List

AMP Air Conditioning

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Monitor mode

[ F1 ]

Setting mode

[ F2 ]

Classification

Operation of each part

Time guard

Refrigerant cycle data 1

Refrigerant cycle data 3

Classification

Install Correction

Change of 30

function 2

Low noise

setting

ITEM

CODE No.

ITEM

CODE No.

Setting Mode

Rotational speed of outdoor unit fan motor

Rotational speed of INV compressor

Current value of INV compressor

12 14

Pulse of EEV1 INV compressor accumulated time

[ Cooling ]

22 INV compressor accumulated time

[ Heating ]

Information on Thermistor 1

(Discharge Pipe Temperature Thermistor)

32 Information on Thermistor 3

(Outdoor Temperature Thermistor)

34 Information on Thermistor 5

(Heat Exchanger Temperature Thermistor)

39 Information on Thermistor 10

(Compressor Temperature Thermistor)

50 Information on pressure sensor 1 The value of the pressure sensor 1 is displayed

Information on pressure sensor 2

Setting Mode

Pipe length setting

Defrost setting shift 1

(Defrosting time)

Defrost setting shift 2 (Defrosting start time)

Energy saving level setting

41 Low noise mode setting

Low noise mode operation

level setting

ITEM

CODE No.

The rotational speed of the outdoor unit fan motor is displayed [ 0 ~ 999 ] rpm

The rotational speed of the compressor is displayed [ 0 ~ 999 ] rps

Current value of INV compressor is displayed [ 0.00 ~ 99.99 ] A Pulse of EEV1 is displayed [ 0 ~ 9999 ] pls Accumulated time is displayed in the cooling operation of the INV compressor [ 0 ~ 9999 ] Accumulated time is displayed in the heating operation of the INV compressor

[ 0 ~ 9999 ] The value of the Thermistor 1 is displayed [ -99.9 ~ 999.9 ] The value of the Thermistor 3 is displayed [ -99.9 ~ 999.9 ] The value of the Thermistor 5 is displayed [ -99.9 ~ 999.9 ] The value of the Thermistor 10 is displayed [ -99.9 ~ 999.9 ]

If unit is [MPa], it is displayed as [ 0.00 ~ 9.99 ]

[psi], it is displayed as [ 0.0 ~ 999.9 ] The value of the pressure sensor 2 is displayed

If unit is [MPa], it is displayed as [ 0.00 ~ 9.99 ]

[psi], it is displayed as [ 0.0 ~ 999.9 ]

00 40-65m 02

65-90m

End temperature:Normal

End temperature:Higher

End temperature:Lower

Start temperature:Normal

Start temperature:Higher

Start temperature:Lower Level 1 (stop)

Level 2 (operated at 50% capacity)

Level 3 (operated at 75% capacity)

Level 4 (operated at 100% capacity)

03 00

Off (Normal operation)

On (Low noise mode operation is always done) Level 1 (dB)

Level 2 (dB)

Level 3 (dB)

Information contents

10hour

°C or °F °C or °F

°C or °F

Setting Function

End time:Normal End time:Longer End time:Shorter Start time:Normal Start time:Longer Start time:Shorter

Default

ITEM

CODE No.

Function mode

Forced operation

[ F3 ]

Clear

Error History

Error history

Display Mode

[ F9 ]

00 Cooling test run

01 Heating test run Forced thermostat-ON in Heating 02 Test run stop Test run is stopped

30 Error history clear All the abnormal code histories are cleared 33 INV compressor accumulated time clear Accumulated time of the INV compressor becomes [ 0 ]

35 Field setting all clear Return to default the all set items

ITEM

CODE No.

01 02

Setting Mode

Meaning of Error History Number

1 time ago (Newest) 2 times ago

3 times ago

4 times ago

Setting Function

Forced thermostat-ON in Cooling

Information contents

Refer to TROUBLE SHOOTING

01-27

DUCT type

AMP Air Conditioning

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INVERTER

R410A

2 . TROUBLE SHOOTING

2. TROUBLE SHOOTING

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2-1 ERROR DISPLAY

2-1-1 WIRED REMOTE CONTROLLER DISPLAY

The Error code operate as follows according to the error contents. Indoor Unit : AR* C72 / 90LHTA

Error Code

E00 E01 E02 E04 E06

E0A E0C E0E E0F E11 E12 E13 E15 E16 E17

Error Contents

Wired remote controller error

Serial error (Serial reverse transfer error)

Room temperature thermistor error

Indoor heat exchanger temperature thermistor (middle) error

Outdoor heat exchanger temperature thermistor (outlet) error Outdoor temperature thermistor error

Outdoor discharge pipe temperature thermistor error Heat sink thermistor (inverter) error Discharge temperature error

Model distinction error (Indoor) Indoor fan motor 1 lock error

Indoor fan motor 1 rev. error

Indoor signal error Compressor temperature thermistor error Pressure switch error, Pressure sensor error

IPM Protection

Trouble

Shooting

4 1 5 3 7 8 6

9 17 23 16

2 10 20 12

E1A E1b E24

E2A E2b E2c E2E E2F E34

E37 E38

Compressor location error Outdoor fan error Excessive high pressure protection

Power supply frequency detection error

Compressor temperature error

4-way Valve Error, Solenoid Valve Error

Inverter error Low pressure error

Indoor fan motor 2 lock error Indoor fan motor 2 rev. error

Indoor fan motor 1 drivers circuit error Indoor fan motor 2 drivers circuit error

13 14 18 11 21 19 15 22 16 24

02-01

2-1-2 OUTDOOR UNIT DISPLAY

AMP Air Conditioning

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Please refer the blinking pattern as follows. Outdoor Unit : AO* A72 / 90LALT

The Error LED operate as follows according to the error contents.

Error Code

E. 06. Outdoor heat exchanger temperature thermistor (outlet) error E. 0A. Outdoor temperature thermistor error E. 0C. Outdoor discharge pipe temperature thermistor error E. 0E. Heat sink thermistor (inverter) error E. 0F. Discharge temperature error E. 13. Indoor signal error E. 15. Compressor temperature thermistor error E. 16. Pressure switch error, Pressure sensor error E. 17. IPM protection E. 1A. Compressor location error E. 1b. Outdoor fan error E. 24. Excessive high pressure protection E. 2b. Compressor temperature error E. 2E. Inverter error E. 2F. Low pressure error

Error Contents

Trouble

Shooting

7 8 6 9 17 2 10 20 12 13 14 18 21 15 22

E. 99. Indoor unit error condition

---

02-02

2-2 TROUBLE SHOOTING WITH ERROR CODE

AMP Air Conditioning

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Trouble shooting 1

Indicate or Display:

OUTDOOR UNIT Error Method: Serial error

Refer to error code table.

(Serial reverse transfer error) Detective Actuators: Detective details:

Outdoor unit Main PCB

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

Forecast of Cause:

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

Check Point 1-1 : Reset the power and operate

Does error indication reappear?

YESYES

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 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 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 L1 - N, L2 - N, L3 - 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 1 - 3. >> If it is abnormal, replace Main PCB.

BLACK WHITE RED

1 2 3

02-03

Trouble shooting 2

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Indicate or Display:

INDOOR UNIT Error Method: Indoor signal error

Refer to error code table.

Detective Actuators: Detective details:

Indoor unit controller PCB Indoor unit filter PCB

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

Forecast of Cause:

1. Connection failure 2. External cause 3. Controller PCB failure 4. Filter PCB failure

Check Point 1-1 : Reset the power and operate

Does error indication reappear?

YESYES

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 1-2 : Check external cause such as noise

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 L1 - N, L2 - N, L3 - N.

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 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 2 - 3. >> If it is abnormal, replace Controller PCB and Filter PCB.

BLACK WHITE RED

1 2 3

02-04

Trouble shooting 3

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Indicate or Display:

INDOOR UNIT Error Method:

Indoor heat exchanger temperature

Refer to error code table.

thermistor (middle) Error

Detective Actuators: Detective details:

Indoor unit controller PCB Heat exchanger temperature thermistor (middle)

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

Forecast of Cause :

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

Check Point 1 : Check connection of connector

Check if connector is removed. Check 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)

Temperature (°C ) Resistance value (k )

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

-10 -5 0 5 10 15 20 30 40

312.3 233.2 176.0 134.2 103.3 80.3 62.9 39.6 25.6

50 60 70 80 90 100 110 120

17.1 11.6 8.1 5.8 4.2 3.1 2.3 1.8

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)

BLACK

CN110

CN113

121

1 1 2 2

BLACK

BLACK BLACK

THERMISTOR ( PIPE-MID TEMP. )

THERMISTOR ( ROOM TEMP. )

If the voltage does not appear, replace Controller PCB.

02-05

Trouble shooting 4

AMP Air Conditioning

www.ampair.co.uk | sales@ampair.co.uk

Indicate or Display:

INDOOR UNIT Error Method: Wired remote controller error

Refer to error code table.

Detective Actuators: Detective details:

Indoor unit controller PCB Wired remote controller

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

Forecast of Cause:

1. Connection failure 2. Wired remote controller failure 3. Controller PCB failure

Check Point 1 : Check the connection of terminal

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.

OKOK

Check Point 2 : Check Wired remote controller and Controller PCB

Check voltage at connector of Wired remote controller of Controller PCB. (Power supply to Wired remote controller) >> CN140 : 1 - 3 pin

If it is DC12V, Wired remote controller is failure. (Controller PCB is normal)

>> Replace Wired remote controller.

If it is DC 0V, Controller PCB is failure.

>> Replace Controller PCB.

02-06

Trouble shooting 5

AMP Air Conditioning

www.ampair.co.uk | sales@ampair.co.uk

Indicate or Display:

INDOOR UNIT Error Method:

Room temperature thermistor error

Refer to error code table.

Detective Actuators: Detective details:

Indoor unit controller PCB Room temperature thermistor

When Room temperature thermistor open or short-circuit is detected at power ON.

Forecast of Cause :

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

Check Point 1 : Check connection of connector

Check if connector is removed. Check 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)

Temperature (°C ) Resistance value (k )

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

-10 -5 0 5 10 15 20 30

58.2 44.0 33.6 25.9 20.2 15.8 12.5 8.0

40 50 60 70 80

5.3 3.6 2.5 1.8 1.3

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)

CN110

CN113

121

1 1 2 2

BLACK BLACK

THERMISTOR ( PIPE-MID TEMP

THERMISTOR ( ROOM TEMP. )

. )

If the voltage does not appear, replace Controller PCB.

02-07

Trouble shooting 6

AMP Air Conditioning

www.ampair.co.uk | sales@ampair.co.uk

Indicate or Display: OUTDOOR UNIT Error Method: Outdoor discharge pipe temperature

Refer to error code table.

thermistor error Detective Actuators: Detective details:

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.

Forecast of Cause :

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

Check Point 1 : Check connection of connector

Check if connector is removed. Check 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)

Temperature (°C ) Resistance value (k )

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

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

1013.1 531.6 292.9 168.6 100.9 62.5 40.0 26.3 17.8

60 70 80 90 100 110 120

12.3 8.7 6.3 4.6 3.4 2.6 2.0

OKOK

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)

1 2

CN141

3 4 5 6

1 2 3 4

CN143

3 4 5 6

1 2 3 4

THERMISTOR ( DISCHARGE PIPE )

THERMISTOR ( COMPRESSOR TEMP

THERMISTOR ( HEAT EXCHANGER OUT )

. )

CN144

1 2 3

If the voltage does not appear, replace Main PCB.

THERMISTOR ( OUTDOOR TEMP

. )

02-08

Trouble shooting 7

AMP Air Conditioning

www.ampair.co.uk | sales@ampair.co.uk

Indicate or Display:

OUTDOOR UNIT Error Method: Outdoor heat exchanger temperature

Refer to error code table.

thermistor (outlet) error Detective Actuators: Detective details:

Outdoor unit Main PCB Heat exchanger temperature thermistor (Out)

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

Forecast of Cause :

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

Check Point 1 : Check connection of connector

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

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

OKOK

Check Point 2 : Remove connector and check thermistor resistance value

Thermistor characteristics (Approx. value)

Temperature (°C ) Resistance value (k )

Temperature (°C )

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

95.6 50.3 27.8 16.1 9.6 6.0 3.8 2.5 1.7

60 70 80

Resistance value (k )

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

1.2 0.8 0.6

OKOK

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)

1 2

CN141

3 4 5 6

1 2 3 4

CN143

CN144

1 2 3

3 4 5 6

1 2 3 4

1 2 3

THERMISTOR ( DISCHARGE PIPE )

THERMISTOR ( COMPRESSOR TEMP

THERMISTOR ( HEAT EXCHANGER OUT )

THERMISTOR ( OUTDOOR TEMP

. )

If the voltage does not appear, replace Main PCB.

02-09

Trouble shooting 8

AMP Air Conditioning

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Indicate or Display: OUTDOOR UNIT Error Method:

Outdoor temperature thermistor error

Refer to error code table.

Detective Actuators: Detective details:

Outdoor unit Main PCB Outdoor temperature thermistor

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

Forecast of Cause :

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

Check Point 1 : Check connection of connector

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

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

OKOK

Check Point 2 : Remove connector and check thermistor resistance value

Thermistor characteristics (Approx. value)

Temperature (°C ) Resistance value (k )

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

-30 -20 -10 0 10 20 30 40

200.2 105.4 58.2 33.6 20.2 12.5 8.0 5.3

50 60 70 80

3.6 2.5 1.8 1.3

OKOK

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)

1 2

CN141

3 4 5 6

1 2 3 4

CN143

3 4 5 6

1 2 3 4

THERMISTOR ( DISCHARGE PIPE )

THERMISTOR ( COMPRESSOR TEMP

THERMISTOR ( HEAT EXCHANGER OUT )

. )

CN144

1 2 3

If the voltage does not appear, replace Main PCB.

THERMISTOR ( OUTDOOR TEMP. )

02-10

Trouble shooting 9

AMP Air Conditioning

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Indicate or Display: OUTDOOR UNIT Error Method:

Heat sink thermistor (inverter) error

Refer to error code table.

Detective Actuators: Detective details:

Outdoor unit Inverter PCB Heat sink temperature thermistor (INV)

When Heat sink temperature thermistor (INV) open or short-circuit is detected at power ON or while running the compressor.

Forecast of Cause :

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

OKOK

Check Point 2 : Remove connector and check thermistor resistance value

Thermistor characteristics (Approx. value)

Temperature (°C ) Resistance value (k )

Temperature (°C )

-30 -20 -10 0 10 20 30 40

94.3 49.6 27.4 15.8 9.5 5.9 3.8 2.5

50 60 70 80 90

Resistance value (k )

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

1.7 1.2 0.8 0.6 0.4

OKOK

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)

CN800

1 2

If the voltage does not appear, replace Inverter PCB.

THERMISTOR ( HEATSINK INV. TEMP.)

02-11

Trouble shooting 10

AMP Air Conditioning

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Indicate or Display:

OUTDOOR UNIT Error Method: Compressor temperature thermistor error

Refer to error code table.

Detective Actuators: Detective details:

Outdoor unit Main PCB Compressor temperature thermistor

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

Forecast of Cause :

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

Check Point 1 : Check connection of connector

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

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

OKOK

Check Point 2 : Remove connector and check thermistor resistance value

Thermistor characteristics (Approx. value)

Temperature (°C ) Resistance value (k )

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

-30 -20 -10 0 10 20 30 40

1013.1 531.6 292.9 168.6 100.9 62.5 40.0 26.3

50 60 70 80 90 100 110 120

17.8 12.3 8.7 6.3 4.6 3.4 2.6 2.0

OKOK

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)

1 2

CN141

3 4 5 6

1 2 3 4

CN143

3 4 5 6

1 2 3 4

THERMISTOR ( DISCHARGE PIPE )

THERMISTOR ( COMPRESSOR TEMP. )

THERMISTOR ( HEAT EXCHANGER OUT )

CN144

1 2 3

If the voltage does not appear, replace Main PCB.

THERMISTOR ( OUTDOOR TEMP

. )

02-12

Trouble shooting 11

AMP Air Conditioning

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Indicate or Display: INDOOR UNIT Error Method:

Power supply frequency

Refer to error code table.

detection error

Detective Actuators: Detective details:

Indoor unit Controller PCB

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

Indoor unit Filter PCB

Forecast of Cause:

1. Connection failure 2. External cause 3. Controller PCB failure 4. Power PCB failure

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

Does error indication reappear?

YESYES

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 1-2 : Check external cause such as noise

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, L1 - N, L2 - N, L3 - N.

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 4 : Replace Controller PCB and Power PCB

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

02-13

Trouble shooting 12

AMP Air Conditioning

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Indicate or Display: OUTDOOR UNIT Error Method:

IPM Protection

Refer to error code table.

Detective Actuators: Detective details:

Outdoor unit Inverter PCB Compressor

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.

Forecast of Cause :

1. Connection failure 2. Outdoor fan operation failure

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

Check Point 1 : 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.

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 14)

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

Check Point 4 : Check Inverter PCB

Inverter PCB check is refer to SERVICE PARTS INFORMATION 4.

>> If it is abnormal, replace Inverter PCB.

OKOK

Check Point 5 : Check Compressor

Compressor check is refer to SERVICE PARTS INFORMATION 2.

>> If it is abnormal, replace compressor.

02-14

Trouble shooting 13

AMP Air Conditioning

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Indicate or Display: OUTDOOR UNIT Error Method:

Compressor location error

Refer to error code table.

Detective Actuators: Detective details:

Outdoor unit Inverter PCB

When "compressor location detection error" is detected consecutively 5 times, within 40 seconds after start-up.

Forecast of Cause :

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

Check Point 1 : 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.

Check Point 2 : Check Inverter PCB

Inverter PCB check is refer to SERVICE PARTS INFORMATION 4.

>> If it is abnormal, replace Inverter PCB.

OKOK

Check Point 3 : Check connection of around the Compressor components

For Compressor Terminal, Main PCB

Check if connector is removed.

Check erroneous connection. Check if cable is open.

(Refer to PARTS INFORMATION 2)

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

OKOK

Check Point 3-1: Replace Compressor

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

02-15

Trouble shooting 14

AMP Air Conditioning

www.ampair.co.uk | sales@ampair.co.uk

Indicate or Display:

OUTDOOR UNIT Error Method: Outdoor Unit Fan Error

Refer to error code table.

Detective Actuators: Detective details:

Outdoor unit Main PCB Outdoor fan motor Main Filter 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 consecutively 3 times, compressor and fan motor stops. If repeats 5 times in a row, permanently

Forecast of Cause:

1. Fan Motor failure 2. Motor protection by surrounding temperature rise

3. Main PCB failure 4. Main Filter PCB failure

Check Point 1 : Check rotation of Fan

Check if the fan motor is lock. (Can the fan be rotated by hand when operation is off.) Check the fan loosening. (Lock-nut loosening, defective propeller fan)

>> If fan motor or bearing is abnormal, replace it.

compressor and fan motor stops

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.

Check Point 3 : Check Fuse of Main Filter PCB.

Check if F602 is open.

>> If F602 is open, replace Main Filter PCB.

Check Point 4 : Check output voltage of Main PCB

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

>>1 pin (Red) - 4 pin (Black) : DC280V (AC220V-10%)~ 373V (AC240+10%) >>4 pin (Black) - 5 pin (White) : DC15V 1.5V

1 2 3 4 5 6 7

RED

CN102

If the voltage is not correct, replace Main PCB.

BLACK WHITE YELLOW BLUE

FAN MOTOR

02-16

Trouble shooting 15

AMP Air Conditioning

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Indicate or Display: OUTDOOR UNIT Error Method:

Inverter error

Refer to error code table.

Detective Actuators: Detective details:

Outdoor unit Main PCB Outdoor unit Inverter PCB

When there is communication error between Main PCB and Inverter PCB. When "Inverter PCB cement resistor difference voltage between both ends" detects 18V and above twice continuously.

Forecast of Cause :

1. Connection failure 2. Main PCB failure 3. Inverter PCB failure

Check Point 1 : Check connections 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.

Check Point 2 : Check resistance of Cement Resister

Remove connector, check each Cement Resister

Resistance value

5.6 5

If Resistance value is abnormal, replace Cement Resister.

Check Point 3 : Replace Main PCB and Inverter PCB

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

02-17

Trouble shooting 16

AMP Air Conditioning

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Indicate or Display: INDOOR UNIT Error Method: Indoor fan motor 1 lock error

Refer to error code table.

Indoor fan motor 1 rev. error Detective Actuators: Detective details:

Indoor unit Controller PCB Indoor unit Power PCB

When the condition that actual rev. of Indoor Fan is 1/3 or less.

Or the condition of fan speed is 0rpm is continued more than 56 seconds.

Indoor fan motor

Forecast of Cause:

1. Fan motor failure 2. Motor protection by surrounding temperature rise

3. Power PCB failure 4. Controller PCB failure

Check Point 1 : Check rotation of fan

Check if the fan motor is lock. (Can the fan be rotated by hand when operation is off.) Check the fan loosening. (Lock-nut loosening, defective propeller fan)

>> If fan motor or bearing is abnormal, replace it.

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.

Check Point 3 : Replace Power PCB and Controller PCB

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

02-18

Trouble shooting 17

AMP Air Conditioning

www.ampair.co.uk | sales@ampair.co.uk

Indicate or Display: OUTDOOR UNIT Error Method:

Discharge temperature error

Refer to error code table.

Detective Actuators: Detective details:

Outdoor unit Main PCB Discharge pipe temperature thermistor

Forecast of Cause :

1. Valve is close 2. EEV failure 3. Gas leak, less 4. Discharge thermistor failure

5. Outdoor fan operation failure 6. Outdoor heat exchanger clogged

< Cooling mode >

Check Point 1 : Check if gas valve is open

If it is not open, open it and check the operation.

OK OK

Check Point 2 : Check EEV and Strainer

Are EEV and Strainer open? (Refer to PARTS INFORMATION 3)

>> If EEV or Strainer is defective, replace it.

When the discharge temperature becomes higher than 115°C. When detecting it 2 times within 24 hours, the compressor stops.

< Heating mode >

Check Point 1 : Check if liquid valve is open

If it is not open, open it and check the operation.

Check Point 2 : Check EEV and Strainer

Are EEV and Strainer open? (Refer to PARTS INFORMATION 3)

>> If EEV or Strainer is defective, replace it.

MPa MPa

Check Point 3 : Check if gas leak or less gas

Measure gas pressure, if there is a leak, correct it.

>> If recharging refrigerant, make sure to perform vacuuming and recharge the specified amount.

Check Point 4 : Check Discharge pipe thermistor

Is it on the holder? Is there a cable pinched?

>> Check characteristics of thermistor (Refer to Trouble shooting 6), If defective, replace the thermistor

Check Point 5 : 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 6 : Check Outdoor fan

Check outdoor fan motor. (Refer to Trouble shooting 14)

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

02-19

Trouble shooting 18

AMP Air Conditioning

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Indicate or Display: OUTDOOR UNIT Error Method:

Excessive high pressure protection

Refer to error code table.

Detective Actuators: Detective details:

Outdoor unit Main PCB Outdoor fan motor

In cooling operation, after 1 minute or more compressor starts, when outdoor heat exchanger temperature is 68 °C and above.

Heat exchanger temp. thermistor (Out) Outdoor unit EEV

Forecast of Cause :

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

4. Thermistor failure 5. EEV failure 6. Main PCB failure

Check Point 1 : 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.

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 Point 3 : Check Outdoor fan

Check Outdoor fan motor. (Refer to Trouble shooting 14)

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

OKOK

Check Point 4 : Check Thermistor

Check Thermistor. (Refer to Trouble shooting 7)

>> If the thermistor is failure, replace it.

OKOK

Check Point 5 : Check EEV

Check EEV. (PARTS INFORMATION 3)

>> If the EEV is failure, replace it.

OKOK

Check Point 6 : Replace Main PCB

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

02-20

Trouble shooting 19

AMP Air Conditioning

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OUTDOOR UNIT Error Method: 4-way Valve Error,

Solenoid Valve Error

Indicate or Display:

Refer to error code table.

Detective Actuators:

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

Detective details:

When the indoor heat exchanger temperature is compared with the room temperature, and either following condition is detected continuously two times, the compressor stops. Cooling or Dry operation [Indoor heat exchanger (middle) temp.] - [Room temp.] > 20degC Heating operation [indoor heat exchanger (middle) temp.] - [Room temp.] < -14degC If the same operation is repeated 5 times, the compressor stops permanently.

Forecast of Cause :

1. Connector connection failure 2. Thermistor failure 3. Solenoid 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.

OKOK

Check Point 2 : Check thermistor

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

>> Check characteristics of thermistor, If defective, replace the thermistor.

OKOK

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

[ Solenoid coil ] Remove CN105 from PCB and check the resistance value of coil. Resistance value is about 1.5k

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

[ 4-way valve ] Check each piping temperature, and confirm the location of the valve by the temperature difference. >> If the value location is not proper,

replace 4-way valve.

Heating Operation Cooling Operation

4WAY VALVE

SOLENOID COIL

HOT GAS

Resistance Value

1.5K

4WAY VALVE

OFF

SOLENOID COIL

HOT GASHOT GAS

HOT GAS

OKOK

Check Point 4: Check Voltage of Solenoid Coil

If CN105 of Control PCB dose not Show 220V + 20 V during Heating operation (Compressor is in operation), replace Control PCB.

02-21

Trouble shooting 20

AMP Air Conditioning

www.ampair.co.uk | sales@ampair.co.uk

Indicate or Display: OUTDOOR UNIT Error Method:

Pressure switch error,

Refer to error code table.

Pressure sensor error Detective Actuators: Detective details:

Outdoor unit Main PCB Pressure sensor Pressure switch

30 seconds or more after power-on, when pressure sensor detection value detects the condition below continuously for 30 seconds or more. High pressure : Ps < 0.3 or Ps > 5.0 MPa Low pressire : Ps < 0.06 or Ps > 5.0 MPa When pressure switch detectes more than 4.2 MPa

= =

Forecast of Cause :

1. Connector connection failure 2. Pressure sensor failure 3. Main PCB failure 4. Pressure switch failure

Check Point 1 : Check connection of the Pressure Sensor

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 output voltage of Main PCB

Check voltage of Main PCB. (Measure at Main PCB side connector)

>>1 pin(Red) - 3 pin(Black) DC5V 5%

If the voltage is not correct, replace Main PCB.

CN118(HP) CN119(LP)

Check Point 3 : Check output voltage of Pressure Sensor

Check voltage of Main PCB. (Measure at Main PCB side connector)

>>2 pin(White) - 3 pIn(Black) Voltage is refer to the following graph.

[High pressure] [Low pressure]

4.5

Voltage [V]

0.5 0 5

Pressure [MPa]

If the voltage is not correct, replace Presure Sensor.

3.5

Voltage [V]

0.5 0 1.7

Pressure [MPa]

RED

WHITE

BLACK

PRESSURE SENSOR

Check Point 3 : Continuity check of Pressure Switch

Continuity check of Pressure Switch

Pressure Switch characteristics OFF : 4.2 0.1 MPa ON : 3.2 0.15 MPa

If it is not correct, replace pressure switch.

CN120

02-22

BLUE

PRESSURE SWITCH

Trouble shooting 21

AMP Air Conditioning

www.ampair.co.uk | sales@ampair.co.uk

Indicate or Display:

OUTDOOR UNIT Error Method: Compressor temperature error

Refer to error code table.

Detective Actuators: Detective details:

Outdoor unit Main PCB Compressor temperature thermistor

Forecast of Cause :

1. Valve is close 2. EEV failure 3. Gas leak, less 4. Compressor thermistor failure

5. Outdoor fan failure 6. Outdoor heat exchanger clogged

< Cooling mode >

Check Point 1 : Check if gas valve is open

If it is not open, open it and check the operation.

Check Point 2 : Check EEV and Strainer

Are EEV and Strainer open? (Refer to PARTS INFORMATION 3)

>> If EEV or Strainer is defective, replace it.

Check Point 3 : Check if gas leak or less gas

When the compressor temperature becomes 112°C or more.

< Heating mode >

Check Point 1 : Check if liquid valve is open

If it is not open, open it and check the operation.

Check Point 2 : Check EEV and Strainer

Are EEV and Strainer open? (Refer to PARTS INFORMATION 3)

>> If EEV or Strainer is defective, replace it.

MPa MPa

Measure Gas pressure, if there is a leak, correct it.

>> If recharging refrigerant, make sure to perform vacuuming and recharge the specified amount.

Check Point 4 : Check Compressor temperature thermistor

Is it on the holder? Is there a cable pinched?

>> Check characteristics of thermistor (Refer to Trouble shooting 10), If defective, replace the Compressor temperature thermistor.

Check Point 5 : 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 6 : Check Outdoor fan

Check Outdoor fan motor. (Refer to Trouble shooting 14)

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

Check Point 7 : Replace Main PCB

If Check Point 1 ~ 6 do not improve the symptom, replace Main PCB.

02-23

Trouble shooting 22

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Indicate or Display:

OUTDOOR UNIT Error Method: Low pressure error

Refer to error code table.

Detective Actuators: Detective details:

Outdoor unit Main PCB Pressure sensor

In cooling operation, 1 minute or more after compressor's start-up, when pressure sensor detects 0.12 MPa or less for consecutive 5 minutes.

Forecast of Cause :

1. Connector connection failure 2. Pressure sensor failure 3. Main PCB failure 4. Gas leak, less

Check Point 1 : Check connections of the Pressure sensor

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 output voltage of Main PCB

Check voltage of Main PCB. (Measure at Main PCB side connector)

>>1 pin(Red) - 3 pin(Black) DC5V 5%

RED

CN119

If the voltage is not correct, replace Main PCB.

WHITE

BLACK

PRESSURE SENSOR

Check Point 3 : Check if gas leak or less gas

Measure Gas pressure, if there is a leak, correct it.

>> If recharging refrigerant, make sure to perform vacuuming and recharge the specified amount.

Check Point 4 : Replace Pressure sensor

If Check Point 1 ~ 3 do not improve the symptom, replace Pressure sensor.

MPa MPa

02-24

Trouble shooting 23

AMP Air Conditioning

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Indicate or Display:

INDOOR UNIT Error Method: Model distinction error (Indoor)

Refer to error code table.

Detective Actuators: Detective details:

When power is on and there is some below case.

Indoor unit Controller PCB

1. When model information of EEPROM is incorrect

2. When the access to EEPROM failed

Forecast of Cause:

1. External cause 2. Defective for connection in controller unit 3. Controller PCB failure

Check Point 1-1 : Reset power supply and operate

Does error indication show reappear?

YESYES

Check Point 2 : Check connections condition in control unit

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

Check Point 3 : Replace Controller PCB

If Check Point 1, 2 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).

02-25

Trouble shooting 24

AMP Air Conditioning

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Indicate or Display: INDOOR UNIT Error Method: Indoor fan motor 1 drivers circuit error

Refer to error code table.

Indoor fan motor 2 drivers circuit error Detective Actuators: Detective details:

Indoor unit Power PCB

When a momentary power cut off. When do not start fan motor.

Forecast of Cause :

1. External cause 2. Connection of connector failure 3. Power PCB failure

Check Point 1 : Check external cause at Indoor and Outdoor (Voltage drop or Noise)

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

Momentary power failure : Check if there is a defective contact or leak current in the power supply circuit.

Noise : Check if there is any equipment causing harmonic wave near electric line. (Neon bulb or electric equipment that may cause harmonic wave) Check the complete insulation of grounding.

OKOK

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.

OKOK

Check Point 3 : Replace Power supply PCB

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

02-26

2-3 TROUBLE SHOOTING WITH NO ERROR CODE

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Trouble shooting 25

Indoor unit - No Power

Forecast of Cause:

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 manual.

Check Point 2 :

Instant voltage drop of ----- Check if there is abnormally large load in the same power supply power supply system. Momentary power failure ----- Check if there is a defective contact or leak current in the power supply system. Noise ----- Check if there is any equipment causing harmonic wave near electric line. (Neon bulb or electric equipment that may cause harmonic wave) Check whether the ground connection is proper.

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

Check Point 3 : Check electrical components

Check the voltage of power supply.

>> Check if AC198(AC220V-10%) - 264V(AC240V+10%) appears at indoor unit Terminal 1 - 2 (Power supply).

Check Fuse(F600) on Power PCB and 20A Fuse .

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

Check Varistor on Filter PCB (VA301, VA302).

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

If Check Point 1 ~ 3 do not improve the symptom, replace Filter PCB, Power PCB and controller PCB.

02-27

Trouble shooting 26

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Outdoor unit - No Power

Forecast of Cause:

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 manual.

Check Point 2 :

Instant voltage drop of ----- Check if there is a abnomally large load in the same power supply power supply system. Momentary power failure ----- Check if there is a defective contact or leak current in the power supply system. Noise ----- Check if there is any equipment causing harmonic wave near electric line. (Neon bulb or electric equipment that may cause harmonic wave) Check whether the ground connection is proper.

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

Check Point 3 : Check electrical components

Check the voltage of power supply.

>> Check if AC198(AC220V-10%) - 264V(AC240V+10%) appears at outdoor unit terminal , L1 - N, L2 - N, L3 - N.

Check Fuse F50 and F100 on Main PCB.

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

Check Fuse F602 on Main Filter PCB.

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

Check Varistor VA50 and VA51 on Main PCB.

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

Check Varistor VA601, and VA604 on Main Filter PCB.

>> If Varistor is defective, there is a possibility of an abnormal power supply. Check the correct power voltage and replace Main Filter PCB.

If Check Point 1 ~ 3 do not improve the symptom, replace Main Filter PCB, Inverter Filter PCB Main PCB, and Inverter PCB .

02-28

Trouble shooting 27

AMP Air Conditioning

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No Operation (Power is ON)

Forecast of Cause:

1. Setting / Connection failure

2. External cause

3. Electrical component defective

Check Point 1 : Check indoor and outdoor installation condition

Indoor unit - Check incorrect wiring between indoor unit - remote controller, or terminals between indoor units. Or, check if there is an open cable connection. Are these indoor unit, outdoor unit, and remote controller suitable model to connect?

>> If there is some abnormal condition, correct it by referring to manual.

Is there loose or removed serial communication line of between indoor unit and outdoor unit?

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

Instant voltage drop of power supply ----- Check if there is abnormally large load in the same power supply system. Momentary power failure ----- Check if there is a defective contact or leak current in the power supply system. Noise ------------------------------ Check if there is any equipment causing harmonic wave near electric line. (Neon bulb or electric equipment that may cause harmonic wave) Check whether the ground connection is proper.

Check Point 3 : Check electrical components at indoor unit and outdoor unit

Check voltage at CN140

>> If it is DC12V, Wired Remote Controller is failure. >> Replace Wired Remote Controller. >> If it is DC 0V, Controller PCB is fallure. >> Replace Controller PCB.

>> If Check Point 1, 2 do not improve the symptom, replace control parts of outdoor unit.

02-29

Trouble shooting 28

AMP Air Conditioning

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No cooling / No heating

Forecast of Cause:

1. Indoor unit error 2. Outdoor unit error

3. Effect by surrounding environment

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

Check Point 1 : Check indoor unit

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

Check Point 2 : Check outdoor unit operation

Is outdoor unit is operating? (If not, refer to Trouble shooting 25) Is there any obstructing the air flow route? Is there any clogging on outdoor unit heat exchanger? Is the valve open?

Check Point 3 : Check site condition

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

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

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 Point 5 : Check refrigeration cycle

Check if Strainer is clogged (Refer to the figure at right). Measure gas pressure and if there is a leakage, correct it.

When recharging the refrigerant, make sure to perform

vacuuming, and recharge the specified amount.

Check EEV Check Compressor

MPa MPa

Attention

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.

Pipe (In) Pipe (Out)

02-30

Trouble shooting 29

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Forecast of Cause :

1. Abnormal installation (Indoor unit / outdoor unit)

Abnormal Noise

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 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?

Trouble shooting 30

Forecast of Cause:

Water leaking

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

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

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

Is Compressor locked? >> Check Compressor

1. Erroneous installation 2. Drain hose failure

Diagnosis method when water leak occurs

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

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

Is Fan rotating? >> Check Fan motor

Diagnosis method when water is spitting out.

Is the filter clogged?

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

MPa MPa

02-31

2-4 SERVICE PARTS INFORMATION

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SERVICE PARTS INFORMATION 1

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).

>> 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)

MPa

Check if Refrigerant is leaking. (Recharge refrigerant)

Check if Strainer is clogged. (PARTS INFORMATION 3)

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.)

Abnormal noise

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

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

Replace Compressor

02-32

SERVICE PARTS INFORMATION 2

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Inverter Compressor

Check Point 1 : Check connection

Check terminal connection of Compressor (Loose or incorrect wiring)

RED

BLACK

Inverter PCB

WHITE

Check Point 2 : Check winding resistance

Check winding resistance of each terminal

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

Check connection of Inverter PCB (Loose or incorrect wiring)

TM806

Inverter PCB

TM807

RED

TM808

Compressor

BLACK

WHITE

R(U)

Resistance value : 0.553 (at 25°C)

T(W)

S(V)

Check Point 3 : Check Inverter PCB

If Check Point 1, 2 do not improve the symptom, refer to SERVICE PARTS INFORMATION 4.

>> If it is abnormal, replace Inverter PCB.

02-33

SERVICE PARTS INFORMATION 3

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Outdoor Unit Electronic Expansion Valve (EEV)

Check Point 1 : Check Connections

Check connection of connector (Loose connector or open cable)

1 2

CN70

3 4 5

RED

BLUE

ORANGE

YELLOW WHITE

EXPANSION VALVE COIL

Check Point 2 : Check coil of EEV

Remove connector, check each winding resistance of Coil.

Read wire Red - Blue Red - Orange Red - Yellow Red - White

If Resistance value is abnormal, replace EEV.

Resistance value

46 4

at 20°C

Check Point 4 : Check Noise at start up

Turn on Power and check operation noise.

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

Check Point 3 : Check voltage from Main PCB.

Remove Connector and check Voltage (DC12V)

If it does not appear, replace Main PCB.

Check Point 5 : Check opening and closing operation of valve

When valve is closed, it has a temp. difference between Inlet and outlet.

CLOSE Example : Hot gas

Pipe (In)

If it is open, it has no temp. difference between inlet and outlet.

OPEN Example : Hot gas

Pipe (In)

Check Point 6 : Check Strainer

Strainer normally does not have temperature difference between inlet and outlet as shown in , but if there is a difference as shown in , there is a possibility of inside clogged. In this case, replace Strainer.

Pipe (In) Pipe (Out)

Pipe (Out)

Pipe (In) Pipe (Out)

02-34

SERVICE PARTS INFORMATION 4

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IPM (Mounted on Inverter PCB)

Check Point 1

 Disconnect the connection wires between the Inverter PCB - electrolytic capacitor and Inverter PCB - Inverter Compressor.

 Set the tester to the "Resistance" mode, and measure the resistance between the following terminals.

Red wire (P) - screw terminals U/V/W White wire (N) - screw terminals U/V/W

 Judge the result of as follows:

All 6 points several M or greater : Normal 1 or more points several k to short : Defective

Terminal

Inverter PCB

Check Point 2

Set the tester to the "Diode" mode, and measure the voltage value between the following terminals.

Tester display

Tester +side (red)

Terminal U Terminal V Terminal W

White wire (N)

Tester - side (black)

Red wire (P)

Terminal U Terminal V Terminal W

Tester display

[V]

Judge the result of as follows:

All 6 points several 0.3V to 0.7V : Normal 1 or more points under 0.1V or over load : Defective

02-35

04-103

DUCT type

AMP Air Conditioning

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INVERTER

R410A

3 . APPENDING DATA

3-1. FUNCTION SETTING

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3-1-1 INDOOR UNIT

Follow the instructions in the Local Setup Procedure, which is supplied with the remote control, in accordance with the installed condition. After the power is turned on, perform the Function Setting on the remote control.

The settings may be selected between the following two: Function Number or Setting Value.

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

1-1. Setting the Filter sign

The indoor unit has a sign to inform the user that it is time to clean the filter. Select the time setting for the filter sign display interval in the table below according to the amount of dust or debris in the room. If you do not wish the filter sign to be displayed, select the setting value for "No indication".

( Factory setting)

Setting Description Standard (2,500 hours) Long interval (5,000 hours) Short interval (1,250 hours) No indication

Function Number Setting Value

00 01

02 03

1-2. Setting the Static Pressure

Select appropriate static pressure according to the installation conditions. Refer to the technical manual for details or follow the instructions of the duct designer.

( Factory setting)

Setting Description Function Number Setting Value Normal (72Pa) Low static pressure (50Pa) High static pressure 1 (150Pa) High static pressure 2 (200Pa)

00 02 03 04

High static pressure 3 (250Pa) 05

1-3. Setting the Cooler 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.

Setting Description Function Number Setting Value Standard (No correction) Warmer control (+1.0°C) Slightly warmer control (+0.5°C) Slightly lower control (-0.5°C) Low control (-1.0°C) 04

03-01

( Factory setting)

00 01 02 03

1-4. Setting the Heater Room Temperature Correction

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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 (No correction) Warmer control (+1.0°C) Slightly warmer control (+0.5°C) Slightly lower control (-0.5°C)

00 01 02 03

Low control (-1.0°C) 04

1-5. Setting the Auto restart

Enable or disable automatic system restart after a power outage.

( Factory setting)

Setting Description

Yes

Auto restart is an emergency function such as for power failure etc. Do not start and stop the indoor unit by this function in normal operation. Be sure to operate by the control unit, or external input device.

1-6. 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.

Function Number Setting Value

( Factory setting)

Setting Description

No 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.

Function Number Setting Value

03-02

1-7. Cool Air Prevention

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This setting is used to set the fan speed when the compressor stops once the room temperature has reached the set temperature during heating operation.

( Factory setting)

Setting Description Function Number Setting Value Super low

Follow the setting on the remote controller

00 01

(corresponding to ventilation)

1-8. Room Temperature Control Switching

This setting is used to set the room temperature control method when the wired remote controller is selected by the Indoor Room Temperature Sensor Switching Function.

( Factory setting)

Setting Description Function Number Setting Value Control by the sensors of

both the indoor unit and the wired remote controller.

Control only by the sensor of the wired remote controller

03-03

3-1-3 Procedures to change the Function Setting

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This procedure changes the function settings used to control the indoor unit according to the installation conditions. Incorrect settings can cause the indoor unit to malfunction. This procedure should be performed by authorized installation or service personnel only.

Perform the "FUNCTION SETTING" according to the installation conditions using the remote controller.

(1) Press the set temperature buttons ( ) ( ) and fan control 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.

SUMOTUWETH FR

SET BACK

SUMOTUWETH FR

Unit number of INDOOR UNIT

SUMOTUWETH FR

Function number (4) Press set temperature buttons ( ) ( ) to select the setting value. The display flashes as shown to the right during setting value selection.

(5) Press the SET button to confirm the setting. Press the 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

SUMOTUWETH FR

set correctly. (An invalid setting value may have been selected for the indoor unit.)

(6) Repeat steps 2 to 5 to perform additional settings.

Setting value

Press the set temperature buttons ( ) ( ) and fan control button simultaneously again for more than 5 secondsto cancel the function setting mode. In addition, the function setting mode will be automatically canceled after 1 minute if no operation is performed.

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

03-04

3-1-4 WIRED REMOTE CONTROLLER

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Wired remote controller

Can be used. ( Do not change.)

Dual remote controller setting

Filter reset operation and filter display

DIP SW

( Duct model is nonfunctional.) Can be used. ( Do not change.)

Can be used. ( Do not change.)

Memory backup setting

SWITCH POSITION

Wired remote controller

Front case (back side)

OFF

1 2 3 4 5 6

Do not use this DIP Switch 2

DIP Switch 1

DIP SWITCH SETTING

1. SW setting

1-1 Dual remote controller setting

Set the remote controller DIP switch 1 No.2 according to the following table.

( Factory setting)

Number of remote controller

1 (Normal)

Master unit Slave unit

DIP-SW 1 No.2

OFF

DIP-SW 1 No.2

2 (Dual)

1-2 Memory backup setting

Set to ON to use batteries for the memory backup.if batteries are not used, all of the settings stored in memory will be deleted if there is a power failure.

This function is wired remotecontroll only.

( Factory setting)

DIP-SW No.6

OFF

ON Validity

Memory backup

OFF

Invalidity

03-05

3-2. THERMISTOR RESISTANCE VALUES

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3-2-1 Indoor unit

Room temperature thermistor

-10.0

-5.0

0.0

5.0

10.0

15.0

20.0

25.0

30.0

35.0

40.0

45.0

58.25

44.03

33.62

25.92

20.17

15.84

12.54

10.00

8.04

6.51

5.30

4.35

Voltage(V)Resistance(K )Tempe C

1.15

1.39

1.66

1.94

2.22

2.50

2.77

3.03

3.27

3.48

3.68

3.85

Indoor heat exchanger thermistor

-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

312.27

233.21

176.03

134.23

103.34

80.28

62.91

49.70

39.57

31.74

25.64

20.85

17.06

14.05

11.64

9.69

8.12

6.83

5.78

4.91

4.19

3.59

3.09

2.67

2.32

2.02

1.76

Voltage(V)Resistance(K )Tempe C

0.69

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

4.30

4.40

4.48

4.55

4.61

4.66

4.71

4.75

4.78

4.81

4.83

3-2-2 Outdoor unit

Discharge 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

65.0

70.0

75.0

80.0

85.0

90.0

95.0

100.0

105.0

110.0

115.0

120.0

1013.11

729.09

531.56

392.31

292.91

221.09

168.60

129.84

100.91

79.12

62.55

49.84

40.01

32.35

26.34

21.58

17.79

14.75

12.30

10.32

8.69

7.36

6.27

5.36

4.60

3.96

3.43

2.98

2.60

2.27

2.00

Voltage(V)Resistance(K )Tempe C

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

-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

1013.11

729.09

531.56

392.31

292.91

221.09

168.60

129.84

100.91

79.12

62.55

49.84

40.01

32.35

26.34

21.58

17.79

14.75

12.30

10.32

8.69

7.36

6.27

5.36

4.60

3.96

3.43

2.98

2.60

2.27

2.00

Voltage(V)Resistance(K )Tempe C

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

Compressor temperature thermistor

03-06

Outdoor heat exchanger thermistor

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-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

95.57

68.89

50.31

37.19

27.81

21.02

16.05

12.38

9.63

7.56

5.98

4.77

3.84

3.11

2.53

2.08

1.71

1.42

1.19

1.00

0.84

0.71

0.61

Voltage(V)Resistance(K )Tempe C

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

Outdoor Temprature 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

65.0

70.0

75.0

80.0

200.20

144.32

105.38

77.90

58.25

44.03

33.62

25.92

20.17

15.84

12.54

10.00

8.04

6.51

5.30

4.35

3.59

2.98

2.49

2.09

1.76

1.49

1.27

Voltage(V)Resistance(K )Tempe C

0.80

1.05

1.33

1.65

1.98

2.33

2.66

2.98

3.27

3.54

3.77

3.96

4.13

4.27

4.39

4.49

4.57

4.64

4.70

4.74

4.78

4.81

4.84

Heat sink 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

65.0

70.0

75.0

80.0

85.0

90.0

94.26

67.95

49.62

36.68

27.42

20.73

15.83

12.21

9.50

7.46

5.90

4.71

3.78

3.06

2.50

2.05

1.69

1.40

1.17

0.98

0.83

0.70

0.60

0.51

0.44

Voltage(V)Resistance(K )Tempe C

0.08

0.11

0.15

0.20

0.26

0.34

0.43

0.55

0.68

0.84

1.01

1.21

1.42

1.64

1.88

2.11

2.35

2.58

2.81

3.02

3.22

3.41

3.57

3.73

3.87

03-07

1116,Suenaga,Takatsu-ku,Kawasaki 213-8502,Japan

AMP Air Conditioning

www.ampair.co.uk | sales@ampair.co.uk

February. 2014 Printed in Japan

Fujitsu ARC90LHTA, ARC72LHTA, AOA72LALT, AOA90LALT Service Instruction

Specifications and Main Features

Frequently Asked Questions

User Manual