Friedrich WallMaster WCVT12B30A handleiding

Airco

Friedrich

90 pagina's

PDF beschikbaar

Handleiding

64 64

DIAG

CODE

PROBLEM

CONDITIONS POSSIBLE CAUSES CORRECTIVE ACTION

Inverter fan fault The feedback signal of outdoor fan

cannot be detected.

1. Start detection when the ODU fan

is running.

2. The feedback signal of outdoor

fan cannot be detected.

3. If the above conditions are

met. the unit will shut down for 3

minutes, error will be reported.

1. Fan blade is stuck.

2. PCB and motor unconnected.

3. PCB is faulty.

4. DC fan motor is faulty.

1. Remove object from condenser fan or

evaporator blower wheel.

2. Check wiring and connections between

motor and PCB.

3. Replace Inverter board PCB.

4. Replace Fan motor.

Inverter

immediate

fault 1

7810

Loss of

Compressor Motor

Control

Loss of Compressor Motor Control.

1. Detects the fault when the

compressor is running;

2. PCB detected abnormal operation

of compressor.

3 If the above conditions are

met, the unit will shut down for 3

minutes, and error will be reported.

1. PCB and Compressor disconnected.

2. PCB is faulty.

3. Compressor is faulty

1. Check wiring and connections from PCB to

compressor.

2. Disconnect the compressor before power up

the unit and check for fault. If fault is removed

replace compressor.

3. Check the voltage of power supply.

4. Check the radiator ventilation is normal.

5. Check whether the IPM is in good contact with

the radiator.

6. Check refrigeration system for abnormalities.

7. Replace Inverter PCB.

8. Replace Compressor.

For loss of compressor motor control,

compressor startup faults, and compressor

phase overcurrent see ﬁgure 607.

7813

Compressor

Startup Fault

Compressor start failure.

1. Start detection when compressor

starts;

2. A start failure is detected and the

system starts again after a delay

of 20s;

3. If the start-up fails for three

consecutive attempts. The unit will

be shut down for 3 minutes. Error

will be reported.

1. PCB and Compressor disconnected.

2. System abnormal.

3. PCB is faulty.

4. Compressor is faulty

7800

Compressor Phase

Over Current

The compressor current exceeds

the set software limit value.

1. Detect the fault when the

compressor is running;

2. The compressor Peak current

is detected to exceed the set limit

value.

3. If the above conditions are

met. the unit will shut down for 3

minutes, and error will be reported.

1. PCB and Compressor disconnected.

2. System abnormal.

3. PCB is faulty.

4. Compressor is faulty

7801

AC Input Over

Current

The AC RMS current is detected to

exceed the set limit value.

1. Detect the fault when the

compressor is running.

2. The AC RMS current is detected

to exceed the set limit value.

3. If the above conditions are

met. the unit will shut down for 3

minutes, and error will be reported

1. Supply voltage is unstable.

2. The system is overloaded due to

poor heat dissipation

See following page for continuation of fault code 18.

TROUBLESHOOTING

Diagnostic Codes-Inverter

Figure 604

Bekijk gratis de handleiding van Friedrich WallMaster WCVT12B30A, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.