LG R1003A3 Svc Manual page 23

COMPLAINT
Compressor cycles on
overload
Insufficient cooling
Excessive noise.
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Only for training and service purposes
CAUSE
Fan motor
Condenser air flow
restriction
Condenser fins
(damaged)
Capacitor
Wiring
Refrigeration system
Air filter
Exhaust damper door
Unit undersized
Blower or fan
Copper tubing
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REMEDY
If not running, determine the cause. Replace if
required.
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 re-assembling.
If the condenser fins are closed over a large area
on the coil surface, head pressures will increase,
causing the compressor to cycle. Straighten the
fins or replace the coil.
Test the capacitor.
Check the terminals. If loose, repair or replace.
Check the system for a restriction.
If restricted, clean of replace.
Close if open.
Determine if the unit is properly sized for the area to
be cooled.
Check the set screw or clamp. If loose or missing,
correct. If the blower or fan is hitting air guide,
rearrange the air handling parts.
Remove the cabinet carefully, rearrange the tubing
not to contact cabinet, compressor, shroud, and
barrier.
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