Temp drops to 55 at night
although my forced air gas furnace keeps the temp I set, 68°, 24/7, it drops to 55° at night. The furnace feels warm, so I thought maybe the fan wasn’t working. I set the thermostat to the fan staying on and it worked, but the temp didn’t go up.
Can anyone help?
Comments
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filters clean? Did it work years past?
Keep the thermostat in the heat mode.Bob "hot rod" Rohr
trainer for Caleffi NA
Living the hydronic dream0 -
yes it worked in the past and until a couple nights ago. Blower fuse was replaced about 6 months ago; Other than that, no issues. Thermostat is in heat mode -
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Do you have a setback on the thermostat?
Br. Jamie, osb
Building superintendent/caretaker, 7200 sq. ft. historic house museum with dependencies in New England0 -
Ita likely tripping a limit and shutting down prematurely. Very common issue and the fix depends on what furnace is there. Post the model #. Could also be weak inducer causing pressure switch to flutter
0 -
thank you all. I had a friend check it because it quit completely, and it’s a relay. Won’t be here til Monday, but it’s a $4.50 part.
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