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OK, does the unit run/blow air, but no heat?
Or does the unit not respond at all in heat?
Does it work in cool function?
We dont want cooling obviously but I wanted to test the reverse valve. This is what determines heat or cool.
Sometimes we can switch from cool to heat and back a few times and it will jog the reverse valve.
that is correct...and in the event the blower runs but not ac compressor we are getting into a defect in the 220v circuit