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Refer to Installation Instructions for proper
installation.
Reposition - adjust motor mount.
Check that compressor grommets have not
deteriorated. Check that compressor mounting
parts are not missing, and that shipping blocks
have been removed.
Check assembly and parts for looseness,
rubbing and rattling.
TO CORRECT
POSSIBLE CAUSE
PROBLEM
Noisy operation.
Poorly installed unit.
Fan blade striking chassis.
Compressor vibrating.
Improperly mounted or loose cabinet
parts.
Clean obstructed drain trough.
Evaporator drain pan broken or cracked. Reseal or
replace.
Check Installation Instructions. Reseal as required.
Dirty evaporator coil - clean.
Very high humidity level.
TO CORRECTPOSSIBLE CAUSE
PROBLEM
Water leaks into room.
Evaporator drain pan overflowing.
Condensation forming on base pan.
Poor installation resulting in rain
entering room.
Condensation on discharge grilles.
PROBLEM
POSSIBLE CAUSE TO CORRECT
Replace thermostat.
Check gasket. Reposition or replace.
Clean and advise customer of periodic cleaning of
filter.
Replace tubular insulation on bulb.
(Applicable models.)
Adjust bulb bracket.
(Applicable models.)
Thermostat differential too narrow.
Plenum gasket not sealing, allowing
discharge air to short cycle thermostat.
Restricted coil or dirty filter.
Tubular insulation missing from top of
thermostat bulb.
Thermostat bulb touching thermostat
bulb support bracket.
Thermostat short
cycles.
TO CORRECT
Refer to appropriate wiring diagram.
PROBLEM
Anticipator (resistor) wire disconnected
at thermostat or system switch.
Anticipator (resister shorted or open).
(Applicable models.)
Partial loss of charge in thermostat
bulb causing a wide differential.
POSSIBLE CAUSE
Disconnect plug from outlet. Remove resistor from
bracket. Insert plug and depress "Cool" and "Fan -
Auto (MoneySaver)” buttons. Place thermostat to
warmest setting. Feel resistor for temperature.
If no heat, replace resistor.
Replace thermostat.
Prolonged off-cycles.
(automatic operation)
PROBLEM
POSSIBLE CAUSE
TO CORRECT
Switches from
cooling to heating.
Change room thermostat.
Refer to appropriate wiring diagram.
Thermostat sticking.
Incorrect wiring.