Question about Coleman Propane Forced Air Heater w/Electronic Ignition (50,000-80,000 BTU)

2 Answers

Furnace blower not working how it should

The furnace itself is working properly it just when it reaches the right temp in the house the blower will not shut down it keeps running til it starts blowing cold air again i have to manually shut the switch off and turn it back on and everything repeats itself again...this is a model AGU10016A COLEMAN EVCON FURNACE WITH A LUX DMH110 NON PROGRAMMABLE THERMOSTAT

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  • collections Jan 31, 2009

    i bought a honeywell thermostat to replace the lux and it still does the same thing ,, i also replaced the limit switch and roll out switch and changed the filter still the same problem what else could it be with everything else running properly colud it be the circuit board i am totally lost..........

  • akgbob Mar 03, 2009

    Same exact problem. Would love to hear if anyone has an answer.

    Lux thermostat on newer heater. Turns on and heats up just fine, but once the temp is reached the fan stays on and starts pumping cold air (continuously until I turn it off myself).

    Thanks,
    adam


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2 Answers

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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

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If you could give me a little more information on what is going on i can give you a few things to check. How long does furnace run? Does furnace turn on and off every couple of minutes? How old is furnace? Is this furnace old or new? Have you checked Filter? has furnace been cleaned? Have you replaced the thermostat? do you have to turn furnace off and then back on before it will work again? I think from the information i can see is the thermostat is not turning off when it reaches temperature. if that is the case i would change out thermostat. I would install a digital instead of a thermostat with a mercury bulb. The digital will be an accurate temperature .

Posted on Jan 20, 2009

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