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I have a coleman Direct Vent Forced Air Furnace model #7975c856. It is a 7900c series. When I turn on the heater the burner comes on but the fan never does. I just moved in here and was told it worked fine last winter. Is there more than one switch to turn on, if so, where are they located? If not what else could it be?

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Posted on Jan 02, 2017

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

  • 1 Answer

SOURCE: coleman direct vent forced air furnace

I am a furnace technician and to solve the problem.You will find on the opposite side of the ignitor their is a flame rod with a wire connected to it.Remove it and clean it with sandpaper and re install it and it should fix the problem.If this is dirty it won't sense ignition and the board thinks that is it introducing raw gas into furnace and it isn't igniting and shuts off as a safety precaution.If you see a blueish tinge on the flame rod you should probably replace it.

Posted on Aug 19, 2008

  • 22 Answers

SOURCE: Coleman direct vent forced air gas furnace and asthma

maybe try a UV light on the duct work, my son has same problem and i installed a UV light and the house smelt better and my son could breath better.

Posted on Nov 03, 2008

jcpark50
  • 52 Answers

SOURCE: Manual for a Coleman Forced Air Furnace manual

If you haven't already tried Coleman customer support, try Google. You can find owner's manuals for all kinds of things. good luck, John

Posted on Nov 07, 2008

  • 2458 Answers

SOURCE: My Coleman direct vent forced air furnace

two things the pressure switch not working or the fan control afc not working could need cleaning at the back of the afc try this the afc works on temp rise to bring on the fan afc temp fall to shut of fan so it sound like the afc is not coming on at temp rise, also check if air filter is clean

Posted on Jan 20, 2011

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I have a coleman 7956c856 direct vent forced air furnace it ignites fine but the blower wont kick on


main fan should come on once furnace has heated up to supply hot air to the house. make sure proper voltage going to the fan. fan relay in board may be shot

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There is a thermocouple "wire" that is supposed to be touching the pilot flame.
The thermocouple senses a flame (hot) and allows the heater to operate. If the thermocouple does not sense that the pilot is on, then it will not allow the furnace to operate.
Bend the thermocouple wire (or the pilot tube) so that the pilot flame is touchingg the thermocouple.

That shouls work now.

The air from the fan should not be blowing through the same cxavity that the pilot is in.
If it is, then you may have a leaking furnace whereby carbon monoxide may be seeping into your living quarters.
If the fix above works and the pilot stays on after the heater starts, then there is probably no leak.

Let us know the results ... post a comment or "RATE" this or another expert's solution.

Sep 16, 2009 | Coleman Propane Forced Air Heater...

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Green light stays on, red light blinks along with a buzzing noise


colman uses the furnace to power the attic vent fan . Cheaper that way I guess. It just supplies your attic fan with power so it will vent thus keeping your home a little cooler in the summer.
not a big deal. you can shut the alarm with a switch ot cut power to the alarm.

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Manual for a Coleman Forced Air Furnace manual


If you haven't already tried Coleman customer support, try Google. You can find owner's manuals for all kinds of things. good luck, John

Nov 07, 2008 | Heating & Cooling

1 Answer

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.

Dec 11, 2007 | Coleman Propane Forced Air Heater...

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