Question about Intertherm P3RA-048K Air Conditioner
I replased defrost board & sensor unit still does not go into defrost
Did you check the solenoid on the reversing valve? Has the compressor ever been replaced?
Most reversing valves are normally in heat pump mode, and when the solenoid is energized, it is in A/C mode (in summer cooling, the valve is energized.). If the solenoid is bad, then the unit can not switch to defrost.
If the compressor has been replaced, there is a chance that the reversing valve might have some trash in it, preventing it from switching over. Lightly tap on the valve when defrost or A/C mode is being asked for.
Posted on Jan 22, 2009
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Posted on Jan 02, 2017
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