Hello,
I have a Goodman GMPN080 furnace.
I have an intermittent problem.
The control board flashes non-stop indicating a reverse polarity on thje transformer.
After it sets for about 2 hours with the breaker turned off it starts right up.
I have checked the transformer for the proper voltage and it has 120v AC in and 24v DC out just like it is supposed to.
Is there some sort of thermal overload that is internal to the transformer that may cause this or is there something like this on the control board?????
When it fires back up it runs fine.
Any help will be greatly appreciated.
Thanks,
Andy
I have a Goodman GMPN080 furnace.
I have an intermittent problem.
The control board flashes non-stop indicating a reverse polarity on thje transformer.
After it sets for about 2 hours with the breaker turned off it starts right up.
I have checked the transformer for the proper voltage and it has 120v AC in and 24v DC out just like it is supposed to.
Is there some sort of thermal overload that is internal to the transformer that may cause this or is there something like this on the control board?????
When it fires back up it runs fine.
Any help will be greatly appreciated.
Thanks,
Andy