Thanks BB TX. That’s what I was thinking as far as trouble shooting goes. I think there are two 12 volt feeds to the furnace, one for the controls and one for the fan. The reason I say that is with the wire unhooked I still have 12 volts at the fuse panel inside. The fan will not run. I can leave the red wire connected as the breaker constantly open closes Just for a split second and then opens again. Will see if I can find where it’s shorting out later this week when storms pass.
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