Fan cuts on and off repeatedly when heater is on
I have no problems when the ac is on cool, but when it's on heat, the fan cuts on and off repeatedly. This started about 4 days ago. I've changed the thermostat wjth no improvement.
Heating & Cooling - Intertherm - P3RA-048K Air Conditioner
Answers & Comments
Either the circuit board or the relay that controls the fan in heating is dropping the fan out. it probably uses a different blower speed for cooling than for heating.. you'll need a meter to check if it is losing power.
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