Question about Heating & Cooling
"defrost" is a function of a HEAT PUMP, not the same as an air conditioner because it uses the compressor to both heat and cool. It is not unusual for the defrost control to fail which would allow the cooling to work but not the heat cycle. A qualified service tech should be able to diagnose the fault within the diagnostic phase of a service call and recommend corrective action.
Posted on May 03, 2008
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Posted on Jan 02, 2017
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