5.2.1
TROUBLESHOOTING ANALYSIS
(F)
Compressor Short Cycles (Continued)
Probable Cause
Remedy
Fast recycling remote thermostat
Adjust thermostat differential.
(when applicable).
Fan not operating.
Check and repair accordingly.
Low pressure control cycling.
Check for leaks, also check dis-
charge pressure and adjust
accordingly.
Loose, slipping or fallen off fan
Replace, realign and/or retighten.
belt.
Possible low voltage condition.
Check to determine cause and adjust
accordingly.
(G)
Noisy Fan and/or Compressor Assembly
Probable Cause
Remedy
Belt uneven or bumping
Readjust and realign. Replace if
required.
Sheaves loose or out of line.
Align and tighten.
Loose fan belt.
Tighten fan belt.
Excessive motor speed.
Reduce speed of blower by adjusting
variable pitch pulley. Check for
high voltage, adjust accordingly if
so found.
Bent fan blades. Usually result of
Replace blower wheel and housing if
some extraneous material getting into
need be. Also replace filters and/or
fan because of operation without
secure all unit panels.
filters and/or blower compartment
panels.
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