CW-C180BN
– 10 –
TROUBLE CHECK RESULT CAUSE REMEDY
Fan Motor and 1. Supply Voltage. Less than - 10% by Rated. Customer Restarted unit Consult ELECTRICIAN.
Compressor 2. Fuse Box or Circuit Breaker. Open Contacts. immediately without Repair Open Circuit.
won’t run. waiting 3 minutes WAIT FOR 3 MINUTES.
3. Power cord or Wiring Harness. Pulled loose or Shorted. Repair or Replace it.
4. Thermostat Setting. Higher than ROOM TEMP. Set it LOWER.
Fan Motor 1. Objects around Fan. Locked Fan. Fan Hitting Cowling or Adjust Fan Position set screw.
won’t run Foreign Materials. Remove Foreign Materials.
Frozen Bearings. Replace Fan Motor.
2. RESISTANCE between Wires. Shorted/Open circuit. Shorted or Burned out. Replace Fan Motor.
3. Capacitor Fan Motor. OHM Meter doesn’t Deflect. Capacitor Defect. Replace Capacitor Fan.
4. Main Control Switch. No contacts at Position Shown. Main Control Switch defect. Replace Main Control Switch.
Compressor 1. Thermostat Setting. Higher than ROOM TEMP. Set it lower.
won’t run 2. RESISTANCE between Shorted. Winding Coil touched to the Replace Compressor.
(Fan runs) Terminal and the Body.
Compressor Body.
3. RESISTANCE between Shorted. Rear Shorted or Burnt out. Replace Compressor.
Terminals.
4. Overload Protector. Infinity between Terminals. Overload protector defect. Replace Overload Protector.
5. Capacitor Compressor. OHM Meter doesn’t deflect. Capacitor defect. Replace Capacitor Comp.
6. Thermostat. No CLICK around position. Thermostat defect. Replace Thermostat.
7. Main Control Switch. No contacts at Position shown. Main Control Switch defect. Replace Main Control Switch.
Insufficient 1. Thermostat Setting.
Higher or lower than ROOM TEMP.
Set it lower or higher.
cooling or 2. Ventilation Door open. Open. Reduces capacity. Close Vent door.
heating 3. Air Filter dirty. Clogged or Dirty. Restricted air circulation. Clean or Replace Air Filter.
4. Location of installation. Sunlight hitting outdoor side Restricted Heat Exchanger Consider building an AWNING.
at cooling.
Obstacles. Restricted Heat Exchanger. Remove obstacles or
reinstall unit.
5. Evaporator/Condenser Clogged or Dirty. Restricted air circulation. Clean by steam cleaner.
Coil obstructed.
6. Unit capacity for the room too Not Satisfied. Replace the Unit with
small. bigger one.
7. Temp difference and REFER PERFORMANCE Leakage of refrigerant or Locate repair leak.
Running Current. EVALUATION. refrigeration system is blocked. Flush refrigeration cycle.
Noise 1. Source of Noise. Vibration. Faulty installation. Reinstall unit or Reinforce
the installation.
Intermittent Noise. Fan hitting objects. Adjust Fan position or
remove Foreign Materials.
Refrigerant tubing touching About 1/2" Clearance.
each other.
Fan splashing Drain Water. Consider Attaching the Drain
Pan and pull plug in bottom
pan. (REFER INSTALLATION
INSTRUCTIONS)
No heating 1. Reversing Valve Coil. Infinity between Coil. Replace Reversing Valve coil.
(Fan and 2. Reversing Valve. Resistance between Reversing Replace Reversing Valve.
Compressor run.) Valve Coil.
Water dripping 1. Unit Installation. Tilted to inside room. Restricted run off. Tilt unit to outside slightly.
inside room 2. Drain Tray-STYROFOAM Clogged. Clogged or blocked. Remove the foreign materials.
Pieces blocking Drain (REFER OPERATING
Channel. INSTRUCTIONS)
Frozen 1. Thermostat Setting Set too low for ambient Outdoor TEMP. Low Set Main Control Switch to
Evaporator conditions. (Night time) Fan to melt ICE and Set the Temp.
control to higher temperature
2. Air Filter/Evaporator. Clogged or Dirty. Restricted air circulation Clean Air Filter/Evaporator.
3. Temp. difference and REFER PERFORMANCE Leakage of refrigerant or Locate repair leak.
Running Current. EVALUATION. refrigeration system is blocked. Flush refrigeration cycle.
Frozen 1. Outdoor ambient Heating Operation at Low Outdoor ambient temp. Set Main Control Switch
Condenser temp. outdoor ambient temp. is Low. to Fan to melt ICE.
TROUBLESHOOTING GUIDE
WARNING: DISCONNECT UNIT FROM ELECTRICAL POWER SUPPLY BEFORE MAKING ANY ELECTRICAL
CHECKS.
DISCHARGE THE CAPACITOR BEFORE CHECKING IT.
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