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  1. #1

    OLD Carrier furnace board swap questions

    Hey All, I'm working a Carrier model#58GA125-3A gas furnace. Troubleshot to bad heat relay on the old board. It had the really early style board with two large relays on it(not the large plastic covered relays, earlier than that) I got a replacment for this board at a local parts supply house and most of the connections are labeled the same, but there are two wires on the old board labeled F1 anf F2 coming form the fan limit(older honeywell 4 wire style) and I can't seem to figure out where they should connect to this new board. Install instructions for the board are very basic and the owner does not have original manufacturer lit. (of course) Can anyone point me in the right direction or have the number to Carrier tech support? Thanks, Brad

  2. #2
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,880
    Your local Carrier distributor, can give you the number.
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  3. #3
    Join Date
    Jan 2009
    Location
    Keokuk, IA
    Posts
    5,520
    The old wiring diagram should be attached inside the cabinet door and the new board should have the revised wiring diagram. If not, the Carrier website has data sheets for all their furnaces which include wiring diagrams. I did a similar repalcement myself. The wiring diagrams were pretty well labeled as to the description of each terminal.

  4. #4
    Join Date
    Apr 2004
    Location
    Midwest
    Posts
    2,682
    F1 and F2 go across the fan switch.
    Live each day like it is your last, for one day you will be right!

  5. #5
    Would the fan switch on the new be labeled LIM1 and LIM2?

  6. #6
    Join Date
    Aug 2008
    Location
    Minneapolis
    Posts
    79
    If you know what your doing, one should be able to figure out. No diy!

  7. #7
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,880
    The info you are requesting is becoming too much step by step.

    Sorry, this is not a DIY site. So we are not allowed to give out DIY advise.

    Even though you may be in the trade, the info you are requesting could be used by DIYer.

    If your in the trade, get your post count up to 15 and apply for pro membership.
    Once accepted, you can ask questions in the pro tech forum, plus you'll have access to the educational forums.

    Please read Site Rules Thank you.

    Thread closed.
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