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Anonymous Posted on Dec 08, 2017
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I have a Coleman forced air furnace that when turned on will heat up get to temp and then it blows the flame out but the fan motor continues to run. if i shut the furnace off and restart it it quickly heats up and blows hot air until temp is reached then turn off with the blower motor still running. what could it be ?

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  • MICHAEL Nov 14, 2011

    The fan should continue blowing untill chamber is cooled down,{a safety precaution.}I would shut off power to unit for around 30min.&then turn it back on & see if it will do a normal cycle.If not look for reset button on the blower motor.

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Paul Carew

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  • Coleman Master 3,808 Answers
  • Posted on Dec 08, 2017
Paul Carew
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Fan control could be on summer switch. or af control not working keeping fun running

5 Related Answers

Anonymous

  • 288 Answers
  • Posted on Nov 10, 2007

SOURCE: Coleman Furnace

Based on the info you have given here, I am going to make some assumptions. In "cleaning out all the components" you cleaned the air filter or changed it, cleaned the duct-work, and the intake combustion chamber? When the "furnace stays lite" the pilot and the main burner stays on? Lastly, when it "continues to blow cold air" is this when the main burner is on after long periods of time? If the answers are all yes, then maybe some of the ducts have come off, or the burners aren't working correctly.

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Anonymous

  • 1420 Answers
  • Posted on Nov 17, 2007

SOURCE: furnace problems

Yes, this a symptom when the heat exchanger has a crack in it. Get someone there today! If there is a crack, you could be exposing yourself to Carbon Monoxide! GET IT CHECKED NOW.

Anonymous

  • 1420 Answers
  • Posted on May 30, 2008

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.

mrgrzz

Dale Koehn

  • 88 Answers
  • Posted on Jan 20, 2009

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

Anonymous

  • 1420 Answers
  • Posted on Dec 26, 2009

SOURCE: Gas furnace; flame will not stay on

Clean the flame sensor with a green scotch brite pad. Check all ground connections from the circuit board to the furnace cabinet. Check for a proper ground to the electrical box. Make sure polarity has not been reversed.

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