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Coleman furnace problems

I have a coleman 2 in one self igniting furnace. It runs the ac and the heat. It will push the ac just fine through the vents but it wont push the heat. THe flame is just as big, the furnace itself pushes out heat, but its not getting through the vents at all in the trailor.

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  • MIkal Margetich
    MIkal Margetich Oct 13, 2013


    Mine isnt a gas powered furnace. It is electric. The heat sensor would make sense because the blower works for the ac. It will kick on and build up heat but when it clicks like it does when it starts pushing the heat through, it doesnt do anything but stay in heat up mode pretty much.

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  • 83 Answers

I take you mean there is a fan coming on that blows AC air thru the vents and is the same fan used to blow the heat ? If that is the case is the fan coming on when the heat comes on ? If not then that is why you are not getting the heat.
That can be from a temp sensor not working or a control board or a contactor
First see if the fan even comes on or if the same fan is used for both AC and heat

Posted on Oct 20, 2013

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Posted on Jan 02, 2017

Therinnaiguy
  • 1420 Answers

SOURCE: Flame Adjustment

Make sure the unit is operating on the correct gas, Natural or Propane (LP). The sound you are experiencing is either not enough gas and the flame is burning inside the burner port(s) or too much gas and the flame is much larger than it has to be. At any rate, get a technician to check the gas pressure entering into the home. NOW!

Posted on Sep 18, 2007

muttandjeff
  • 359 Answers

SOURCE: Rollout Limit Switch Keeps Tripping

have someone check the gas presure most likely too high no more than 11

Posted on Dec 17, 2008

  • 189 Answers

SOURCE: coleman furnace wont fire

Check inside the door panel next to the wiring schematic, you should find the diagnostic codes. Look up 7 blinks. This should narrow down the problem. ( It sounds like a bad hot surface ignitor).
Good luck.....

Posted on Apr 10, 2009

  • 215 Answers

SOURCE: furnace shuts down intermittently when calling for heat

The flame sensor is not working properly, it is not allowing the ignitor to ignite, and this is making the system shut down, the flame sensor has obtain a build up of carbon, you will need to remove the flame sensor, and take a little piece of sand paper to remove the black carbon from the flame sensor stem, clean until the stem is shinning, replace the flame sensor and turn the furnance back on this will correct the problem.

Posted on Dec 14, 2009

  • 1 Answer

SOURCE: Coleman furnace -- fan runs, ingniter won't light,

My furnace did not have a reset switch on that particular limiter. I unpugged the switch, it had 2 wires, waited 15 seconds or so and then plugged it back in . Turned the furnace back on and the limiter reset itself.

Posted on Dec 24, 2009

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