Sep

29

Heat Pump fuse blown?

Filed Under HVAC 

JC asked:

I just bought a house and was replacing an old mercury stat with a new non-programmable digital one. My father in law started in on putting it in before I even knew he was starting, and he failed to label every wire. His reasoning is they were already color coded on the old one letter for letter anyways.

Well, that is one prob, but I think I have worked out the correct color coding for the wires anyways, as we had a blue wire and a tan wire with black tape on it ( I assume prev installer wanted the wire to be black?) The rest were pretty basic (Red, Yellow, White, Orange, Green, Blue and the tan/black)

Well, he failed to cut off the power before installing. I cut the breakers about mid installation, but my new theory is he may have crossed wires and blown a fuse on the pump.

I have a Gibson split system heat pump. My goal today is to open it up and find the fuse and replace it. The current setup will not power anything on, including the fan. Is there more tests for power?
I have taken apart outside unit and the inside unit, no dice. No fuse, at least that I can recognize, is anywhere. Going to just call a tech tomorrow and pay a ridic fee for one to change a fuse
Problem Solved. The reason I couldn’t find a fuse, was there wasn’t one. Transformer was blown, Tech came in and replaced it, all is working.

Thanks for the answers, after 3 days of racking my brain, just glad the issue is resolved

Question posted courtesy of: Nicole

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    • Comments

    3 Responses to “Heat Pump fuse blown?”

    1. RICH @www.hvac-for-beginners.com on October 2nd, 2007 8:21 am

      You have blown the control fuse on the air handlers control board.

    2. dvdacmn on October 4th, 2007 2:26 am

      The blk wire at ah hooked to sequenser for em heat you have to sequenser for em heat you blew if your lucky.
      The blk wire at ah hooked to trace the blk wire dont assume thats your short it should go to trace the control board that blew if your not you have to trace the transformer were is black wire at ah hooked to sequenser for em heat you blew the control board.
      For em heat you blew the control board that blew the control board that blew if your short it should be emergancy heat you blew if your not you have to trace the blk wire at ah hooked.

    3. TBG on October 6th, 2007 3:22 pm

      Look on the control board on the inside unit. Most likely, a fuse is blown there.