Daewoo DWC-121C Service Manual page 11

TROUBLE SITUATION
The compressor runs
but the motor doesn't
run
Both fan motor and Not cooling at all
compressor are
running but cooling is
bad
Insufficient cooling
Vibration & Noise
Water leakage into
room
Electric shock
(Leakage of current)
ANALYSIS
1) Fan • Blocked by others
2) Fan motor
3) Capacitor • Disconnection or burned-out
4) Fan motor circuit electric cord
• Failure malfunction of contact
• Disconnection of malfunction of
contact
Refrigerant system 1) Refrigerant system is choked
2) Compressor failure
3) Leakage of refrigerant gas
1) Refrigerant system 1) Refrigerant system is choked
2) Filter 2) Compressor failure
3) Heat exchanger of 3) Leakage of refrigerant gas
condenser
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
1) Installation place • Installation of the unit is
imperfectly done
2) Fan 1) Fan is contacted with
obstacles
3) Fixing screws
2) Fixing bolt
4) Electric
components • Have a screw loose
• Electrical noise
• Installation condition • The front is lower than rear side
• Insulation of 1)Insulation defect of wiring and
components lead wire
2) Leakgae of current due to the
dew or rust
10
CAUSE
• 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
REMEDY