Read Panasonic CW-C180EE / CW-C240EE / CW-A180EE Service Manual online
Trouble
Check
Result
Cause
Remedy
Compressor won’t run
(Fan run).
(Fan run).
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Thermostat setting.
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RESISTANCE
between Terminal
and the
Compressor Body.
between Terminal
and the
Compressor Body.
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RESISTANCE
between Terminals.
between Terminals.
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Overload Protector.
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Capacitor
Compressor.
Compressor.
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Thermostat.
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Main Control
Switch.
Switch.
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Higher than room
temp.
temp.
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Shorted.
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Shorted.
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Infinity between
Terminals.
Terminals.
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OHM Meter doesn’t
deflect.
deflect.
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No click heard.
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No contacts at
Position Shown.
Position Shown.
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Winding Coil touched to the
compressor shell.
compressor shell.
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Rear Shorted or Burnt out.
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Overload Protector defect.
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Capacitor defect.
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Thermostat defect.
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Main Control Switch defect.
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Set it lower.
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Replace Compressor.
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Replace Compressor.
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Replace Overload
Protector.
Protector.
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Replace Capacitor
Compressor.
Compressor.
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Replace Thermostat.
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Replace Main Control
Switch.
Switch.
Air Swing won’t run.
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Air Swing Switch.
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Resistance between
wires.
wires.
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OFF position.
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No contact at
position.
position.
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OHM Meter doesn’t
deflect.
deflect.
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Open circuit.
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Shorted or open circuit.
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Set it ON.
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Replace Air Swing Switch.
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Replace Air Swing Motor.
Insufficient cooling or
heating.
heating.
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Thermostat Setting.
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Ventilation door
open.
open.
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Air filter dirty.
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Location of
installation.
installation.
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Evaporator /
Condenser Coil
obstructed.
Condenser Coil
obstructed.
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Unit capacity for the
room too small.
room too small.
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Temp difference
and running current.
and running current.
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Higher or lower than
room temp.
room temp.
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Open.
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Clogged or dirty.
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Sunlight hitting
outdoor side at
cooling.
outdoor side at
cooling.
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Obstacles.
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Clogged or dirty.
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Not satisfied.
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REFER TO
PERFORMANCE
EVALUATION.
PERFORMANCE
EVALUATION.
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Reduces capacity.
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Restricted air circulation.
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Restricted Heat Exchanger.
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Restricted Heat Exchanger.
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Restricted air circulation.
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Leakage of refrigerant or
refrigeration system is
blocked.
refrigeration system is
blocked.
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Set it lower or higher.
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Close Vent door.
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Clean or replace Air Filter.
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Consider building an
AWNING.
AWNING.
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Remove obstacles or
reinstall unit.
reinstall unit.
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Clean the coils.
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Replace the unit with
bigger one.
bigger one.
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Locate repair leak.
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Flush refrigeration cycle.
Noise.
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Source of Noise
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Vibration.
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Intermittent Noise.
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Faulty installation.
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Fan hitting objects.
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Refrigerant tubing touching
each other.
each other.
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Reinstall unit or Reinforce
the installation.
the installation.
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Adjust Fan position or
remove foreign materials.
remove foreign materials.
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About 1/2” Clearance
needed.
needed.
Water dripping inside
room.
room.
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Unit installation.
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Drain Tray-
Styrofoam pieces
blocking drain
channel.
Styrofoam pieces
blocking drain
channel.
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Tilted to inside room.
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Clogged.
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Restricted run off.
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Clogged or blocked.
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Tilt unit to outside slightly.
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Remove the foreign
materials.
materials.
Frozen Evaporator
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Thermostat setting.
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Air filter /
Evaporator.
Evaporator.
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Temp. difference
and running current.
and running current.
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Set too low for
ambient conditions.
ambient conditions.
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Clogged or Dirty.
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REFER TO
PERFORMANCE
EVALUATION.
PERFORMANCE
EVALUATION.
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Outdoor temp. low (Night
time).
time).
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Restricted air circulation.
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Leakage of refrigerant or
refrigeration system is
blocked.
refrigeration system is
blocked.
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Set the Main Control Knob
to Fan to melt ice and set
the Temp. Control to higher
temperature.
to Fan to melt ice and set
the Temp. Control to higher
temperature.
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Clean Air filter /
Evaporator.
Evaporator.
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Locate and repair leak.
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Flush refrigeration cycle.
No heating (Fan and
Compressor run).
Compressor run).
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Reversing valve coil.
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Reversing valve.
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Infinity between coil.
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Resistance
between
reversing valve coil.
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Replace
reversing
valve
coil.
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Replace reversing valve.
Frozen Condenser
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Outdoor
ambient
temp.
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Heating operation at
low outdoor ambient
temp.
low outdoor ambient
temp.
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Outdoor ambient temp. is
low.
low.
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Set Main Control Switch to
Fan to melt ice.
Fan to melt ice.
10
CW-C180EE / CW-C240EE / CW-A180EE
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