Trouble Check Result Cause
Fan Motor and
Compressor
won’t run.
-Supply Voltage
-Fuse Box or Circuit
Breaker.
-Power cord or Wiring
Harness.
-Temp. Setting.
-Less than 10% by Rated.
-Open Contacts.
-Pulled loose or Shorted.
-Higher than ROOM TEMP.
-Customer Restarted unit
immediately without waiting 3
minutes.
-Consult
-Repair Open Circuit.
-WAIT FOR 3
-Repair or Replace it.
-Set it LOWER.
Fan Motor won’t
run.
-Objects around Fan.
-RESISTANCE between
Wires.
-Capacitor Fan Motor.
-Locked Fan.
-Shorted/ Open circuit.
-OHM Meter doesn’t
Deflect.
-Fan Hitting Cowling or
-Foreign Materials.
-Frozen Bearings.
-Shorted or Burned out.
-Capacitor Defect.
-Adjust Fan position
screw.
-Remove Foreign
-Replace Fan Motor.
-Replace Fan Motor.
-Replace Capacitor
Compressor
won’t run (Fan
Runs).
-Temp. setting.
-RESISTANCE between
Terminal and the
Compressor Body.
-RESISTANCE between
Terminals.
-Capacitor Compressor.
-Overload Protector.
-Higher than room
temperature.
-Shorted.
-Shorted.
-OHM Meter doesn’t
deflect.
-Infinity between
Terminals.
-Winding Coil touched to the
Body.
-Rare Shorted or Burnt out.
-Capacitor defect.
-Overload Protector defect.
-Set it lower.
-Replace
-Replace
-Replace Capacitor
Compressor.
-Replace Overload
Insufficient
cooling.
-Temp. Setting.
-Ventilation Door open.
-Air filter dirty.
-Location of
installation.
-Evaporator/Condenser
Coil obstructed.
-Unit capacity for the
room too small.
-Temp difference and
running current.
-Higher than room
temperature.
-Open
-Clogged or dirty.
-Sunlight hitting outdoor
side.
-Obstacles.
-Clogged or dirty.
-Not satisfied.
-REFER PERFORMANCE
EVALUATION.
-Reduce capacity.
-Restricted air circulation.
-Restricted Heat Exchanger.
-Restricted Heat Exchanger.
-Restricted air circulation
-Leakage of refrigerant or
refrigeration system is blocked.
-Set it lower.
-Close Vent door.
-Clean or Replace
-Consider building
-Remove obstacles
unit.
-Clean using steam
-Replace the unit
one.
-Locate repair leak.
-Flush refrigeration
Noise.
-Source of Noise -Vibration.
-Intermittent Noise.
-Faulty installation.
-Fan hitting objects.
-Refrigerant tubing touching
each other.
-Fan splashing Drain Water.
-Reinstall unit or
installation.
-Adjust Fan position
foreign materials.
-About 1/2”
-Remove drain plug
a drain pan to
-Set the Drain outlet
downward, so that
water can run off.
Water dripping
inside room.
-Unit installation.
-Drain Tray-
STYROFOAM pieces
blocking Drain Channel.
-Tilted to inside room.
-Clogged.
-Restricted run off.
-Clogged or blocked.
-Tilt unit to outside
-Remove the foreign
8. Operation Details
8.1. Fan Mode Operation
- Fan operation only. Fan in operation according to Remote Control
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