Read Panasonic CW-C241SE Service Manual online
CW-C241SE
– 7 –
TROUBLESHOOTING GUIDE
WARNING: DISCONNECT UNIT FROM ELECTRICAL POWER SUPPLY BEFORE MAKING ANY ELECTRICAL
CHECKS.
DISCHARGE THE CAPACITOR BEFORE CHECKING IT.
DISCHARGE THE CAPACITOR BEFORE CHECKING IT.
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
Open Contacts.
immediately without
Repair Open Circuit.
won’t run.
Breaker.
waiting 3 minutes
WAIT FOR 3 MINUTES.
3. Power cord or Wiring
Pulled loose or Shorted.
Repair or Replace it.
Harness.
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
Shorted/Open circuit.
Shorted or Burned out.
Replace Fan Motor.
Wires.
3. Capacitor Fan Motor.
OHM Meter doesn’t Deflect.
Capacitor Defect.
Replace Capacitor Fan.
4. Main Control Knob.
No contacts at Position
Main Control Knob defect.
Replace Main Control Knob.
Shown.
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.
O.L. 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 Knob.
No contacts at Position Shown. Main Control Knob defect.
Replace Main Control Knob.
Insufficient
1. Thermostat setting.
Higher than ROOM TEMP.
Set it lower.
cooling
2. Ventilation Door open.
Open.
Reduces capacity.
Close Vent door.
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.
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
Not Satisfied.
Replace the Unit with
room too small.
Bigger one.
7. Temp difference and
REFER PERFORMANCE
Leakage of refrigerant or
Locate repair leak.
Running Current.
EVALUATION.
refrigeration system is
Flush refrigeration cycle.
blocked.
Noise
1. Source of Noise.
Vibration.
Faulty installation.
Reinstall unit or Reinforce
the installation.
the installation.
Intermittent Noise.
Fan hitting objects.
Adjust Fan position or
remove Foreign Materials.
remove Foreign Materials.
Refrigerant tubing touching About 1/2" Clearance.
each other.
Fan splashing Drain Water. Consider Attaching the
each other.
Fan splashing Drain Water. Consider Attaching the
Drain Pan and pull plug
in bottom pan.
(REFER INSTALLATION
INSTRUCTIONS)
in bottom pan.
(REFER INSTALLATION
INSTRUCTIONS)
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 Knob to
Evaporator
conditions.
(Night time)
Fan to melt ICE and Set
the Temp. Control to higher
temperature.
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
Flush refrigeration cycle.
blocked.
Click on the first or last page to see other CW-C241SE service manuals if exist.