MovinCool Office Pro 63 Service Manual User Manual
Page 38
Repair Section
38
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. 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.
5. Transformer.
Low voltage.
(Secondary side)
Replace transformer.