ELECTRICAL TROUBLESHOOTING CHART - HEAT PUMP
WARNING
ELECTRIC SHOCK HAZARD
Turn off electric power before service or installation.
Extreme care must be used, if it becomes necessary to work on equipment with power applied.
Failure to do so could result in serious injury or death.
CAUTION
BURN HAZARD
Certain unit components operate at temperatures hot enough to cause burns.
Proper safety procedures must be followed, and proper protective clothing must be worn.
Failure to do so could result in minor to moderate injury.
HEAT PUMP
SYSTEM COOLS WHEN HEATING IS DESIRED.
Is Line Voltage
Present at the
Solenoid Valve?
YES
NO
Is the Selector Switch Set for Heat?
Is the Solenoid Coil Good?
YES
NO
Replace the Solenoid Coil
Reversing Valve Stuck
Replace the Reversing Valve
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