
TROUBLE-SHOOTING CHART – COOLING CYCLE
IN-SUFFICIENT
COOLING
BUT CYCLES ON
INTERNAL OVERLOAD
WILL NOT RUN
CONTACTOR OPEN
SUPPLY
CIRCUIT
DELAY
COIL DEFECTIVE
CONNECTION
OVERLOAD OPEN
LINE
PRESSURE SWITCH
CONTACTOR
CLOSED
POWER
SUPPLY OPEN
AT COMPRESSOR
GROUNDED
COMPRESSOR
COMPRESSOR
STUCK
INTERNAL
PROTECTION OPEN
STOPPED OR CYLING
COOLING
RESTRICTED OR
RECIRCULATING
DISCHARGE LINE
NONCONDENSABLES
IN SYSTEM
CHARGE
TO HIGH OR LOW
BEARINGS
HIGH SUPERHEAT
FAN MOTOR
MOTOR DEFECTIVE
OUTDOOR FAN MOTOR
CAPACITOR
BUT INSUFFICIENT
COOLING
PRESSURE
LOW HEAD
PRESSURE
LOW SUPERHEAT
DIRTY AIR FILTERS
DUCT RESTRICTED
CLOSED
FROSTED
REFRIGERANT
RESTRICTED
RESTRICTED
METERING DEVICE
STRAINER
RESTRICTED
COMPRESSOR
VALVE
PRESSURE
RELIEF OPEN
METERING DEVICE
UNIT OVERCHARGED
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