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COMPLAINT
I Grommets
I Fan
I Loose set screw
Fan motor noise.
I Worn bearings
I Voltage
I Wiring
I Operation switch
Compressor will
I Temperature switch
not run, but fan
motor runs.
I Capacitor (Discharge
capacitor before servicing.)
I Compressor
I Overload
CAUSE
• Check grommets; if worn or missing, replace them.
• If cracked, out of balance, or partially missing,
replace it.
• Tighten it.
• 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.
• Check voltage. See the limits on the preceding. page.
If not within limits, call an electrician.
• Check the wire connections, if loose, repair or
replace the terminal. If wires are off, refer to wiring
diagram for identification, and replace. Check wire
locations. If not per wiring diagram, correct.
• Check for continuity, refer to the wiring diagram for
terminal identification. Replace the switch if circuit is
open.
• Check the setting temperature. If not at the coldest
setting, advance the temperature switch to this
setting and restart unit.
Check continuity of the temperature. Replace
temperature if circuit is open.
• Check the capacitor.
Replace if not within ±10% of manufacturer's rating.
Replace if shorted, open, or damaged.
• Check the compressor for open circuit or ground. If
open or grounded, replace the compressor.
• Check the compressor overload, if externally
mounted. Replace if open. (If the compressor
temperature is high, remove the overload, cool it,
and retest.)
Maintenance and Service
REMEDY
Owner's Manual 21
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