This summer when I turned on the air conditioner to my second floor (split unit) the air was warm. Called my a/c
contractor and after checking the freon he went to my attic to check the air handler. Found that it was getting heat and so he disconnected the wire to the coil. Problem solved.
Next week my heating contractor comes to reconnect the wire.
But I realized that I have had a similar situation in the winter when my heat would not go on on the 2nd floor. Solution was to click on and off the switch controlling power to the furnace. Then the circulating motor would go on and everything fine.
Question. What is the problem that is solved when the electricity is turned off and then on. I now know that this would probably have worked this summer since I remember that when the a/c was on the heat circulating pump on the
furnace was running and I should have turned off the electricity before calling the a/c man. But... Any diagnoses?