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CAUSE
_n
COMPLAINT
Fan motor noise.
Compressor will not run,
fan motor runs.
Compressor cycles on
ovedoad.
Blower
Loose set screw
Worn bearings
Voltage
Wiring
REMEDY
If cracked, out of balance, or partiallymissing,
replace it.
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. Ifthe wires are discon-
nected, refer to wiring diagram for identification,
and replace the wires. Check the wire connections
If not according to the widng diagram, correct
the connections.
Rotary Switch Check for continuity, refer to the widng diagram
for terminal identification. Replace the switch if
the circuit is open.
Thermostat Check the position of knob. If not at the coldest
setting, advance the knob to this setting and
restart the unit.
Check the continuity of the thermostat. Replace
the thermostat ifthe circuit isopen.
Capacitor (discharge Check the capacitor.
capacitor before Replace if not within_+10% of manufacturer's
servicing.) rating, replace if shorted, open, or damaged.
Compressor Chock the compressor for open circuitor
ground. If open or grounded, replace the
compressor.
Ovedcad
Voltage
Ovedoad
Check the compressor overloadifextemallymounted.
Replace ifopen. (If thecompressortemperature is
high,remove the overload,cool and retest.)
Check the voltage. See the limitson the
preceding page. If voltage is not within these limits
call an electrician.
Check overload, ifexternally mounted.
Replace if open. (If the compressor temperature
is high, remove the ovedoad, cool, and retest.)
--45--
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