Troubleshooting Guide - Panasonic CW-XC103VU Service Manual

Suction & Discharge
Air Temperature
Difference
-
8°C and over (14.4°F)
-
8°C and over (14.4°F)
-
Under 8°C (14.4°F)
-
Under 8°C (14.4°F)
-
Under 8°C (14.4°F)
Note: Room air humidity is relatively higher, the temperature difference will be smaller.

7. Troubleshooting Guide

Warning: Disconnect unit from electrical power supply before making any electrical checks.
Trouble
-
Fan Motor and
-
Compressor
Breaker.
won't run.
-
Harness.
-
-
Fan Motor won't
-
run.
Wires.
-
-
Compressor
-
won't run (Fan
Terminal and the
Runs).
Compressor Body.
-
Terminals.
-
-
-
Insufficient
-
cooling.
-
-
-
Coil obstructed.
-
room too small.
-
running current.
Current
-
As specified.
-
Higher than specified.
-
Higher than specified.
-
Lower than specified.
-
Higher than specified by 50%.
Check
-
Supply Voltage Less than 10% by Rated.
-
Fuse Box or Circuit Open Contacts.
-
Pulled loose or Shorted.
Power cord or Wiring
-
Higher than ROOM TEMP.
Temp. Setting.
-
Objects around Fan. Locked Fan.
-
RESISTANCE between Shorted/ Open circuit.
-
OHM Meter doesn't
Capacitor Fan Motor.
Deflect.
-
Temp. setting. Higher than room
temperature.
RESISTANCE between
-
Shorted.
-
Shorted.
RESISTANCE between
-
OHM Meter doesn't
deflect.
Capacitor Compressor.
-
Infinity between
Overload Protector.
Terminals.
-
Temp. Setting. Higher than room
temperature.
Ventilation Door open.
-
Open
Air filter dirty.
-
Clogged or dirty.
Location of installation.
-
Sunlight hitting outdoor
Evaporator/Condenser
side.
-
Obstacles.
Unit capacity for the
-
Clogged or dirty.
-
Temp difference and Not satisfied.
-
REFER PERFORMANCE
EVALUATION.
Determination
-
Nothing wrong.
-
Nothing wrong, outdoor
temperature is too high, heat
radiation is not efficient.
-
Something is preventing heat
radiation.
-
Leakage of refrigerant or
refrigerant system is blocked.
-
Compressor defect.
Result
-
Customer Restarted unit
immediately without waiting 3
minutes.
-
Fan Hitting Cowling or
-
Foreign Materials.
-
Frozen Bearings.
-
Shorted or Burned out.
-
Capacitor Defect.
-
Winding Coil touched to the
Body.
-
Rare Shorted or Burnt out.
-
Capacitor defect.
-
Overload Protector defect.
-
Reduce capacity.
-
Restricted air circulation.
-
Restricted Heat Exchanger.
-
Restricted Heat Exchanger.
-
Restricted air circulation
-
Leakage of refrigerant or
refrigeration system is blocked.
-
None.
-
Improve heat radiation.
-
Excessive amount of refrigerant.
-
Improve heat radiation.
-
Locate and repair leak.
-
Flush refrigeration cycle.
-
Replace the compressor.
Cause
-
Consult ELECTRICIAN,
-
Repair Open Circuit.
-
WAIT FOR 3 MINUTES.
-
Repair or Replace it.
-
Set it LOWER.
-
Adjust Fan position setting
screw.
-
Remove Foreign Materials.
-
Replace Fan Motor.
-
Replace Fan Motor.
-
Replace Capacitor Fan
-
Set it lower.
-
Replace Compressor.
-
Replace Compressor.
-
Replace Capacitor
Compressor.
-
Replace Overload Protector.
-
Set it lower.
-
Close Vent door.
-
Clean or Replace Air
-
Consider building an
-
Remove obstacles or
unit.
-
Clean using steam cleaner.
-
Replace the unit with
one.
-
Locate repair leak.
-
Flush refrigeration cycle.
Remedy
Remedy