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Service Manual 24
Troubleshooting Guide
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replace it.
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replace it.
Loose set screw Tighten it.
Worn bearings If knocking sounds continue when running or
loose, replace the motor. If the motor hums or
noise appears to be internal while running,
replace motor.
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replace the terminal. If the wires are discon-
nected, refer to wiring diagram for identification,
and replace the wires. Check the wire connections;
If not according to the wiring diagram, correct
the connections.
Thermistor Check the TEMP control. If not at the lowest
number, set TEMP control to this setting and
restart the unit.
Check the continuity of the thermistor. Replace
the thermistor if the circuit is open.
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for terminal identification. Replace the switch if
the circuit is open.
Capacitor (discharge Check the capacitor.
capacitor before Replace if not within ±10% of manufacturer
’s
servicing.) rating, replace if shorted, open, or damaged.
Compressor Check the compressor for open circuit or
ground. If open or grounded, replace the
compressor.
Overload
Check the compressor overload if externally mounted.
Replace if open. (If the compressor temperature is
high, remove the overload, cool, and retest.)