Service Manual 25
Troubleshooting Guide
COMPLAINT CAUSE
REMEDY
Compressor cycles on
Fan motor
If not running, determine the cause. Replace if
overload. required.
Condenser air flow
Remove the cabinet, inspect the interior surface
restriction
of the condenser. If restricted, clean carefully
with a vacuum cleaner (do not damage fins) or
brush. Clean the interior base before
re-assembling.
Condenser fins
If the condenser fins are closed over a large
(damaged)
area on the coil surface, head pressures will
increase, causing the compressor to cycle.
Straighten the fins or replace the coil.
Capacitor
Test the capacitor.
Wiring
Check the terminals. If loose, repair or replace.
Refrigeration system
Check the system for a restriction.
Insufficient cooling
Air filter
If restricted, clean or replace.
Unit undersized
Determine if the unit is properly sized for the
area to be cooled.
Excessive noise
Turbo Fan or Axial Fan
Check the set screw, or clamp. If loose or miss-
ing, correct. If the tubo fan or axial fan is hitting
scroll or barrier, rearrange the air handling parts.
Copper tubing
Remove the cabinet and carefully rearrange the
tubing not to contact the cabinet,
compressor, shroud, and barrier.
