Duo Therm Heat/AC function question
I'm now sitting in the south, fortunately, I have two roof heat pumps so we are comfortable enough with that AC running. The rear unit was installed new with the front unit in 2oo9, both are clean and...
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If it is indicating cool mode, but heating, odds are the reversing valve solenoid is burned out. Fairly common on those units. Cheap and easy fix, though there were two versions of the coils, one with attached leads, the other with terminals.
