MovinCool Office Pro 63 Service Manual - Manual (Page 41)

Repair Section
41
(3) Overflow of drain water
Symptom
Possible Cause
Remedy
Checking Area Cause
Stops
immediately
after
starting
Control
panel
display
normally.
1. Fan on-off relay on the relay
board.
Open circuit or insufficient
contact.
Replace relay board.
2. Fan HI/LO change relay on
the relay board.
Open circuit or insufficient
contact.
Replace relay board.
3. Fan motor insulation
resistance.
Insulation failure on fan
motor.
Replace fan motor.
4. Compressor relay. Open circuit or insufficient
contact.
Replace compressor
relay.
5. Compressor relay on the
relay board.
Open circuit or insufficient
contact.
Replace relay board.
6. Compressor insulation
resistance.
Insulation failure on
compressor.
Replace compressor.
7. Reverse phase protector. Open circuit or insufficient
contact.
Replace reverse phase
protector.
Stops after
running a
while
Control
panel
display
normally.
1. Temperature of fan motor
(abnormally high).
Operation of safety device
(IOLF) due to fan motor
malfunction.
Replace fan motor.
2. Temperature of compressor
(abnormally high).
Operation of safety device
(IOLC) due to compressor
malfunction.
Replace compressor.
3. Refrigerant leakage. Insufficient refrigerant or gas
leakage.
Repair and charge
refrigerant.
4. Dirt on evaporator or
condenser.
Insufficient cooling of
evaporator or condenser.
Clean evaporator or
condenser.
5. Duct connection state. Improper connection. Repair duct connection.
Symptom
Possible Cause
Remedy
Checking Area Cause
Overflow from the unit.
1. Drain pan. Cracks in drain pan. Check and repair.
2. Water level in drain pan. Clogged drain hose. Check and replace.
3. Drain hole. Reversed air flow from drain
hole.
Insert a trap on discharge
drain hose.
4. Clogged air filter. Reversed air flow from drain
hole due to the excessive
negative pressure inside of
the unit.
Clean air filter.