LG W081CA SG2 Service Manual page 32

COMPLAINT CAUSE REMEDY
Compressor will not run,
but fan motor runs.
Thermostat Check the position of knob If not at the coldest
setting, advance the knob to this setting and restart
unit.
Check continuity of the thermostat. Replace
thermostat if circuit is open.
Capacitor (Discharge
capacitor before servicing.)
Check the capacitor.
Replace if not within ±10% of manufacturers 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 it,
and retest.)
Compressor cycles on
overload.
Voltage Check the voltage.
If not within limits, call an electrician.
Overload Check overload, if externally mounted.
Replace if open. (If the compressor temperature is
high, remove the overload, cool, and retest.)
Compressor cycles on
overload.
Fan motor If not running, determine the cause. Replace if
required.
Condenser air flow
restriction
Remove the cabinet, inspect the interior surface of
the condenser; if restricted, clean carefully with a
vacuum cleaner (do not damage fins) or brush.
Clean the interior base before reassembling.
Condenser fins (damaged) If condenser fins are closed over a large area on the
coil surface, head pressures will increase, causing
the compressor to overload. Straighten the fins or
replace the coil.
Compressor cycles on
Capacitor Test capacitor.
overload.
Wiring
Check the terminals. If loose, repair or replace.
Refrigerating system Check the system for ajestr^gj^n. ^
Insufficient cooling or Air filter If restricted, cleaciof ^
heating
Exhaust damper door
Unit undersized
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Excessive noise Blower or fan
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Copper tubing
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