HEAT PUMP
TROUBLESHOOTING–HEATING CYCLE
NO HEATING OR
INSUFFICIENT
HEATING
COMPRESSOR WILL NOT RUN
COMPRESSOR
RUNS BUT
CYCLES ON
INTERNAL
OVERLOAD
COMPRESSOR
RUNS
INSUFFICIENT
HEATING
CONTACT
OPEN
DEFECTIVE LOW-
VOLTAGE
TRANSFORMER
REMOTE
CONTROL
CENTER
DEFECTIVE
CONTACTOR
COIL OPEN OR
SHORTED
OPEN INDOOR THERMOSTAT
LOSS OF
CHARGE
CONTACTOR
CLOSED
COMPRESSOR POWER SUPPLY
LOOSE LEADS AT
COMPRESSOR
FAULTY START
GEAR
COMPRESSOR
STUCK
COMPRESSOR
INTERNAL
OVERLOAD
OPEN
OPEN SHORTED OR GROUNDED COMPRESSOR WINDINGS
DIRTY FILTERS
OR INDOOR
COIL
INDOOR FAN STOPPED OR CYCLING ON OVERLOAD
DAMAGED
REVERSING
VALVE
RESTRICTION IN DISCHARGE LINE
OVERCHARGE
OR NON-
CONDENSABLES
IN SYSTEM
LOW
REFRIGERANT
CHARGE
LINE VOLTAGE TOO HIGH OR LOW
DEFECTIVE FAN
MOTOR
CAPACITOR
LOOSE LEADS
AT
FAN MOTOR
FAN MOTOR
BURNED
OUT
LOW SUCTION
LOW HEAD
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| OUTDOOR FAN |
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| OUTDOOR FAN | ||
| STOPPED |
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| RUNNING | ||
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| LOOSE LEADS |
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| REVERSING | ||
| AT OUTDOOR |
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| VALVE STUCK | |||
| FAN MOTOR |
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| INTERNAL FAN |
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| MOTOR KLIXON |
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| LIQUID LINE | |||
| OPEN |
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| FAN MOTOR |
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| BURNED OUT |
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| IS CLOGGED | |||
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| DEFROST RELAY |
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| N.C. CONTACTS |
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| OPEN ON |
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| CHARGED | ||
| CIRCUIT BOARD |
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| OUTDOOR COIL | |
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STRIP HEATERS NOT OPERATING
OUTDOOR
THERMOSTAT
DEFECTIVE
ODT SETTING
TOO LOW
CAP TUBE
PINCHED OR
BULB NOT
SENSING TRUE
ODT
STRIP HEATER
RELAY OR
CONTACTOR
DEFECTIVE
OPENING IN
POWER CIRCUIT
TO HEATER
ELEMENTS
BROKEN FUSE
LINK
| OPEN CONTROL |
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| DEFECTIVE RUN |
| CIRCUIT |
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| CAPACITOR |
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DEFECTIVE RUN
CAPACITOR
COMPRESSOR
BEARINGS
CONDITION
REVERSING
VALVE JAMMED IN MIDPOSITION
HIGH
SUPERHEAT
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| STRAINER | ||
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| RESTRICTED | ||
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| OUTDOOR COIL | ||
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| HEAVILY | ||
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| FROSTED | ||
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FAN MOTOR |
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| DEFECTIVE | ||
CONTACTS |
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WELDED CLOSED |
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| DEFROST | ||
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IN DEFROST |
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| THERMOSTAT | ||
RELAY |
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| DEFROST | ||
REVERSING | |||||||
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| THERMOSTAT IN | |||
VALVE DID NOT |
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| POOR PHYSICAL | ||
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SHIFT |
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| CONTACT WITH | ||
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| TUBE | ||
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UNIT NOT |
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PROPERLY |
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CHARGED |
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| BAD ELECTRICAL | ||
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| CONNECTION | ||
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| ANYWHERE IN | ||
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| DEFROST | ||
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BROKEN
HEATER
ELEMENT
OPEN (KLIXON)
OVER
TEMPERATURE THERMOSTAT
DEFECTIVE
ROOM
THERMOSTAT (2ND STAGE)
A90206