Our mobile home Coleman Gas Furnace will let us light the pilot light, but when we click the thermostat up, no flame will ignite. Is it possibly a "flame sensor" not recognizing? Can we troubleshoot/fix ourselves?
Model #7680 Series 856
Thank you!

Hi,
This is not so much as an answer as to a Help request also, I am having the same issue with my coleman, already replaced the flame sensor to no avail. The burner starts up and shuts right back down within a few seconds. It was suggested there might be a blockage in the exhaust or roof vent causing a form of back pressure. If any one has any ideas as to what this may be please help.
Thank You

I just had the same problem, and found the answer. It was the reset button on the side of the blower. I pushed it and the flame ignited, and a minute later, the blower came on. Hope this helps.

I have a Coleman Presidential II the pilot will ignite but the furnace will not come on. I replaced all thermocouplers and fan switches and blower and still nothing whaat should I do?