Argo R410A Manuel de service télécharger pdf (Page 55)

8-4. Trouble Diagnosis of Each Part

8-4-1. Problems of Each Part and Inspection Points

For details about the inspection points, refer to the Inspection Points for Each Part.

Problems

Inspection

points

Indoor unit

Indoor unit does not operate.

Self-Diagnostics check

Indoor controller

(control unit)

Indoor fan motor

Room temperature

sensor

Heat exchanger

temperature sensor

Inter-unit cable

Switch circuit board

Outdoor control circuit

board

Diode module

HIC

Electrolytic capacitor

Fuse

Compressor

Compressor protective

sensor

Outdoor fan motor

4-way valve

Coil thermistor

Electric expansion valve

Branch tubing

temperature sensor

Breaker

Refrigerant gas pressure

(1)

(2)

(3)

(4)

(5)

(6)

(7)

(8)

(9)

(10)

Operation lamp blinking.

Operation lamp does not illuminate.

Indoor fan dose not turn.

Outdoor unit does not operate.

Outdoor fan dose not turn.

4-way valve does not operate.

The compressor (only) does not

operate.

The compressor stops on occasion.

The compressor speed does not

increase.

The outdoor air temperature is high,

however defrost operation occurs.

Defrost operation does not occur.

The electric expansion valve does

not operate.

Does not cool or cooling

performance is inadequate.

Does not heat or heating

performance is inadequate.

Outdoor unit Others

No. of

Inspection

Points for

Each part

Indoor unitOutdoor unitOthers

1 2 ... 50 51 52 53 54 55 56 57 58 59 60 ... 101 102

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Argo R410A Manuel de service Page 55

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