Community Forums

jason1029 · 05-19-2015, 11:35 AM

Hi All
Put in a Honeywell thermostat from Home Depot and last week it was fine. The AC worked, the furnace kicked on and all was right in the world.

Today I turned on the furnace and it came on BUT the AC also came on??? I don't know why it would do that now. I let it run for a few minutes and they both stayed on.

It did not do this last week and I have done nothing since to the thermostat or the wiring.

1994 Tioga with a Coleman AC on roof.

Would like to figure this out before our trip on Friday as we may need heat up in Northern VT.

Thanks!

450Donn · 05-19-2015, 12:00 PM

First, check your thermostat setting. Second, pull the thermostat off and check your wiring it is possible you have a cat whisker touching a terminal that it is not suppose to be touching.

jason1029 · 05-19-2015, 01:54 PM

Quote:

Originally Posted by 450Donn

First, check your thermostat setting. Second, pull the thermostat off and check your wiring it is possible you have a cat whisker touching a terminal that it is not suppose to be touching.

I checked for wiskers and found none. I re-did the wires anyway and still the same issue. When I out on AC it works as normal.