14
OWNER’S MANUAL
PROBLEM POSSIBLE CAUSE SOLUTION
Compressor will not start Broken or loose wire. Check all wire & connections.
Compressor off on internal Allow to cool, will start
overload. automatically.
Low voltage to unit. Check voltage and correct.
High pressure switch tripped. Press reset switch.
Low pressure switch tripped. Check refrigerant charge.
Compressor discharge Check refrigerant charge.
temperature switch tripped.
Defective start relay, start Replace defective component.
capacitor, run capacitor,
transformer or compressor.
Dehumidifying coil iced up Return air below 45°F. Raise return air temperature.
Filters dirty or clogged. Replace filters.
Low air flow. Check blower motor and belt.
Adjust blower speed.
Check blower rotation.
Check duct design. Refer to
manual for proper sizing and
design.
Low refrigerant Charge. Add Refrigerant.
(See charging procedure)
Bad expansion valve. Replace expansion valve.
Restricted drier. Replace drier.
Restricted distributor tubing. Replace distributor tubing.
Restricted distributor. Replace distributor.
SERVICE DIAGNOSIS
(The following is a guide intended for use by qualified
service personnel only. CAUTION High Voltage and
refrigerant under high pressure present.)
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