Question about Goodman GMS90703BXA Heater

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Have agoodmangds80703ana i opened the door to bypass the limit switch also jumped out the door switch now i have no light am i missing something

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  • ncc630 Nov 07, 2010

    have power thru the door switch also have 120 and 24 volts thru the trans former no power to the r terminal were the t stat wires are

  • ncc630 Nov 07, 2010

    the fuse ohms good

  • ncc630 Nov 07, 2010

    have no power to either side of the fuse should i have 24 volts to it


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Double ck your door sw and on somel models there is two door sw in series .. not sure why your jumping these but is sounds like you have been there before .. if door is bypassed it also may cause a air flow problem because you are not drawing air properly with door off . . and the hi limit is for an over heating problem . soo re ckk wires and air flow and it should go .. mm

Posted on Nov 08, 2010

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Either you have killed the transformer or tripped the circuit breaker...

Do you have power on either side of the door switch???

Does the transformer have power?
Is the fuse blown on the circuit board?
Do you have 24v on the R terminal to the t-stat?

You have a power problem... you just have to trace it through and find out where the problem is...
To do this you will need to have a voltage meter to check the circuits and know how to use it properly...


Posted on Nov 07, 2010

  • D. Floyd Kolb
    D. Floyd Kolb Nov 07, 2010

    That narrows it down to something at the board... I would change that there power to one side of the fuse???
    If so and then power through the fuse then it has to be the board...
    follow the electric trail.... :-0


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