0

I have 35,000 BTU wall furnace with a blower motor. When the furnace heats up, the blower starts for about 2 or 3 seconds, turns off for about 5 seconds, then back on for 5 or 6 seconds, then off for 5 or 6 and then back on as it should (stays on). Shuts off appropriately as it is controlled with thermostat. I am trying to figure out why it hesitates to start at the beginning. I have oiled the motor- it spins freely and makes no noise.

1
  • Please edit your post to indicate the exact make/model of the furnace. That will help those with experience know how to trouble shoot the problem. – FreeMan Jan 18 at 12:59
0

I doubt this is a motor problem. Sounds more like a thermostat problem, but not the main heater thermostat. The fan has its own control which, according to the manual, starts the fan 5 to 10 minutes after the furnace starts and then it runs until 5 to 10 minutes after the furnace stops. My hunch is that it is temperature-controlled and is cycling too fast at the beginning - i.e., it blows for 2 seconds, which cools down the initial air flow so fast that it turns itself off, then starts again after another 5 seconds, etc. until it runs continuously.

If it has always been this way, contact the manufacturer.

If it used to work correctly and recently started having this problem, a good cleaning may help.

By the way, I find it interesting that the blower kit is optional. 35,000 BTU is quite a bit of heat to generate without a blower. So I would definitely want that fan running well to circulate the heated air.

1
  • 1
    Part of the reason it's optional is because Empire furnaces can work without electricity.... – ThreePhaseEel Jan 18 at 4:59

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.