10
TROUBLE
SITUATION
ANALYSIS
CAUSE
REMEDY
The compressor runs
but the motor doesn’t
run
Both fan motor and
compressor are
running but cooling is
bad
Vibration & Noise
Water leakage into
room
Electric shock
(Leakage of current)
Not cooling at all
Insufficient cooling
1) Fan
2) Fan motor
3) Capacitor
4) Fan motor circuit
Refrigerant system
1) Refrigerant system
2) Filter
3) Heat exchanger of
condenser
1) Installation place
2) Fan
3) Fixing screws
4) Electric
components
• Installation condition
• Insulation of
components
• Blocked by others
• Disconnection or burned-out
electric cord
• Failure malfunction of contact
• Disconnection of malfunction of
contact
1) Refrigerant system is choked
2) Compressor failure
3) Leakage of refrigerant gas
1) Refrigerant system is choked
2) Compressor failure
3) Leakage of refrigerant gas
4) Refrigerant charge is too high
• Clogged up with dust
1) Fin is cogged up with dust
2) The ventilation is not good
3) The unit is exposed to the
sunlight
4) Other heat source is added in
the room
• Installation of the unit is
imperfectly done
1) Fan is contacted with
obstacles
2) Fixing bolt
• Have a screw loose
• Electrical noise
• The front is lower than rear side
1)Insulation defect of wiring and
lead wire
2) Leakgae of current due to the
dew or rust
• Repair
• Replace the fan motor
• Replace
• Check the circuit
• Repair
• Repair
• Recharge refrigerant gas
• Check and repair refrigerant
system
• Replace
• Check a part of Leakage and
repair
• Repair and recharge
• Clean the air fiter
• Clean the unit
• Shade the unit from the
sunlight
• Remove the added heat source
• Install the unit perfectly
• Remove obstacles
• Tighten the bolt
• Tighten the screw
• Exchange the components
• Make rear side of the unit lower
than the front
• Check the unit’s Leakage of
current.
• Replace the defective parts or
components
