Carrier 38ASB Series, Installation, Start-Up And Service Instructions Manual

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TROUBLE-SHOOTING CHART – COOLING CYCLE
NO COOLING OR
IN-SUFFICIENT
COOLING
COMPRESSOR RUNS
BUT CYCLES ON
INTERNAL OVERLOAD
COMPRESSOR
WILL NOT RUN
CONTACTOR OPEN
FAULTY POWER
SUPPLY
OPEN CONTROL
CIRCUIT
DEFECTIVE TIME
DELAY
CONTACTOR OR
COIL DEFECTIVE
LOOSE ELECTRICAL
CONNECTION
INTERNAL
OVERLOAD OPEN
OPEN DISCHARGE
LINE
PRESSURE SWITCH
CONTACTOR
CLOSED
COMPRESSOR
POWER
SUPPLY OPEN
LOSE LEADS
AT COMPRESSOR
OPEN SHORTED OR
GROUNDED
COMPRESSOR
MOTOR WINDINGS
COMPRESSOR
STUCK
COMPRESSOR
INTERNAL
PROTECTION OPEN
OUTDOOR FAN
STOPPED OR CYLING
COOLING
OUTDOOR AIR
RESTRICTED OR
RECIRCULATING
RESTRICTED
DISCHARGE LINE
OVERCHARGE OR
NONCONDENSABLES
IN SYSTEM
LOW REFRIGERANT
CHARGE
LINE VOLTAGE
TO HIGH OR LOW
COMPRESSOR
BEARINGS
HIGH SUPERHEAT
LOOSE LEAD AT
FAN MOTOR
MOTOR DEFECTIVE
INCORRECT
OUTDOOR FAN MOTOR
CAPACITOR
COMPRESSOR RUNS
BUT INSUFFICIENT
COOLING
LOW SUCTION
PRESSURE
HIGH SUCTION
LOW HEAD
PRESSURE
HIGH SUCTION
LOW SUPERHEAT
DIRTY AIR FILTERS
DUCT RESTRICTED
DAMPERS PARTY
CLOSED
INDOOR COIL
FROSTED
SLIGHTLY LOW OR
REFRIGERANT
LIQUID LINE SLIGHTLY
RESTRICTED
METERING DEVICE
RESTRICTED
INCORRECT
METERING DEVICE
INDOOR COIL
STRAINER
RESTRICTED
DEFECTIVE
COMPRESSOR
VALVE
INTERNAL
PRESSURE
RELIEF OPEN
INCORRECT
METERING DEVICE
UNIT OVERCHARGED
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