Heat Pumps and Electric Heating - Goodman A49-20 - tranformer burning up

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skyler64
11-15-08, 12:23 PM
I have a goodman unit that is burning out transformers. the fan in the attic comes on and after about 1 minute the transformer smokes.. any ideas on issue?

everything I have checked on the web says that wires shorted would cause this, I have not been able to find any shorts doing a resistance check.

Jarredsdad
11-15-08, 02:07 PM
Something is drawing to much amperage. A short is obvious. But could also be a relay or contactor stuck that drwas over amps trying to close.

Break out the amp meter.

Also install an inline fuse. Fuses are cheaper than replacing transformers.
dac122
11-17-08, 06:36 AM
Be sure you're replacing with the correct VA rated transformer. Also check your input voltage to the transformer.