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Coleman furnace running, won't shut off, blowing cold only

Yesterday, we smelled something electrical burning - but couldn't trace it. The furnace was blowing hot air and it was almost 90 in the house. Turned down thermostat. Furnace cooled off, but never quit blowing. It is still only blowing cold air - no matter what I set the thermostat on. The blower won't shut off, unless I shut it off in the fuse box.

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  • Lisa Nuhn
    Lisa Nuhn Nov 08, 2012

    I appreciate all the comments that were posted. I had to resort to a professional to solve the problem. Someone had taken the sequensor off before and replaced it with another part - maybe he called it a compasitor? He said the part that was on usually doesn't go bad and that the sequensor does. The compasitor had stuck in and had burnt the top two connectors. He didn't have the compasitor on his truck, but he had a squensor. So he put it on. He also had to change one of the fuses - an old round type. It is now working fine.

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  • Master
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Hello, the blower will run continues if 1) the limit switch has tripped 2) the relay on the intergrated control board is stuck Try tapping on the control board and let me know if it shuts down.

Posted on Nov 05, 2012

  • Lisa Nuhn
    Lisa Nuhn Nov 08, 2012

    Thank you! I tried tapping on everything, but couldn't seem to do anything.

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Posted on Jan 02, 2017

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  • 767 Answers

SOURCE: furnace will not blow hot or shut off

The furnace has a fault check the furnace compartment for a flash code and check it with the code chart on the furnace door. Turning the power off to the furnace and turning it back on will reset the fault but it may happen again till you verify the fault and fix it.

Posted on Feb 22, 2010

Therinnaiguy
  • 1420 Answers

SOURCE: i have a coleman in my modular home, dosent blow hot air, everyth

Check the air filter and clean. If you can, raise the blower speed up to the next speed. Make sure all of the supply and return grills are open. Is the ductwork connected under the home and well insulated? Does the furnace ever stop or keep on running? If it does stop, you may have a bad thermostat.

Posted on Jan 03, 2010

mrgrzz
  • 88 Answers

SOURCE: furnace blower not working how it should

first off buy yourself a honeywell stat, in my personal opinion lux stats are garbage, I have run into so many that are bad stats !!! but as far as your fan not shuting down, sounds to me like your fan center on your circuit board is bad and will not shut down the fan when needed, you will have to replace the circuit board, as the fan center is a part of the whole of the circuit board, hope that helps

Posted on Jan 20, 2009

Therinnaiguy
  • 1420 Answers

SOURCE: Coleman forced air furnace blower

Rmove the two screws holding the blower in place and slide it out. With the power off, rotate the wheel and inspect for debris or an impingement. If everything turns easy, you have a bad motor or start capacitor. If you have rubbing, adjust the wheel. If the motor will not turn, replace it.

Posted on May 30, 2008

boanhtgclg
  • 34 Answers

SOURCE: furnace will not shut off

something is wrong with the thermostat.  replace it first, that would be the cheapest alternative

Posted on Nov 24, 2008

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