Movincool Office Pro 12 / Office Pro 18 / Office Pro 24 Service Manual download pdf (Page 35)

Repair Section

Symptom

Possible Cause

Remedy

Checking Area Cause

Air volume

normal

Compressor

operates.

1. Usage conditions

(high temperature).

Operation near usage limits. Review the installation

place.

2. Dirt in condenser or

evaporator.

Insufficient heat exchange. Clean fins.

3. Frost in refrigeration cycle. Clogging at the frost section. Replace clogged section.

4. No temperature difference

between evaporator and

condenser.

Insufficient refrigerant. Check the leaking part,

then repair and charge

refrigerant.

Compressor

does not

operate.

1. Compressor coil resistance.

(0 ohm or ∞ ohm)

Short or open circuit. Replace compressor.

(In case of short, check

the compressor relay.)

2. Compressor relay. Open circuit or insufficient

contact.

Replace compressor

relay.

3. Compressor relay on the

relay board.

Open circuit or insufficient

contact.

Replace relay board.

4. Capacitor for compressor

motor.

Capacitor malfunction. Replace capacitor.

5. Voltage. Low voltage. Repair power.

Insufficient

air volume

No air.

1. Coil resistance of fan motor.

(0 ohm or ∞ ohm)

Short or open circuit. Replace fan motor.

2. Fan on-off relay on the relay

board.

Open circuit or insufficient

contact.

Replace relay board.

3. Fan HI/LO change relay on

the relay board.

Open circuit or insufficient

contact.

Replace relay board.

Insufficient

air volume.

1. Air filter. Clogged air filter. Clean air filter.

2. Evaporator. Clogged evaporator or

crushed fins.

Repair and clean fins or

replace it.

3. Duct connection state. Improper connection. Repair duct connection.

4. Fan motor. Insufficient rotation. Replace motor.

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Movincool Office Pro 12 / Office Pro 18 / Office Pro 24 Service Manual Page 35

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