9
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
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