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Goodman A49-20, tranformer burning up

When I turn the unit on, after a delay, the fan in the attic/blower unit comes on, after about 1 minute, the transformer smokes. The internet said to check for wires that are shorted. I did a resitance check on all wires after disconnecting them from the terminal blocks and they all checked out good. I had a service tech come out, I live in the country, 45 miles away from the closest, 90 miles round trip. All they wanted to do after replacing the transformer and it burned out,was to replace the entire unit quoted $2,500, I am trying to avoid this charge.., again the fan/blower works so I don't see why I need to replace that unit, maybe the compressor is bad, but the tech said that was not the problem, however, I never heard it come on. ideas please.. maybe something as simple as a capacitor or a switch?

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  • grantwf Dec 14, 2008

    I hear the blower making a buzzing noise when it comes on .. then there is a puff of smoke, a smell of burned wires as the fan starts ... briefly ... and then it's fine. This is not consistent ... happens once every few days.

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The blower fan comes on,sounds like you have a dead short,check wire connections on transformer,check for burned contactor

Posted on Nov 16, 2008

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