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Pilot light is out of our coleman 7900 mobile home furnace and we can't get it re-ignited

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The thermo couple or the gas valve itself is most likely bad. Cheap enough to start with the thermo couple.

Posted on Sep 08, 2008

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I have brand new coleman mobile home furnace model # DGAH056BBSB the pilot light (elec. Start) wont stay lit and it blows COLD AIR! PLZZZ HELP Ohio is COLD


here, the last sentence is important.
http://www.ehow.com/how_5615197_light-coleman-furnace.html

Further information here.
http://handymanwire.com/ubbthreads/ubbthreads.php/topics/28213/Pilot_light_won_t_stay_lit

But if the unit is new, it must be under some sort of warranty from Coleman and from the fitter.

coleman website, support, contact and warranty, but the website doesn't list, heaters, or furnaces? I am puzzled.
http://www.coleman.com/warranty/

Oct 23, 2015 | Coleman Heating & Cooling

1 Answer

How do I light pilot light?


There should not be a pilot on a direct vent furnace. When you turn up the thermostat for heat the 1st thing to happen is a venter motor should start, it should vent for approximately 45 seconds, the air switch will verify a vacuum in the burner box, then a spark igniter should start clicking to start the pilot, then the flame rod will verify the pilot, the igniter will stop clicking, and the main burner will ignite and remain on until the thermostat has satisfied the set point. These guideline steps must be satisfied before the controller advances to the next step. The 1st step is the venter motor running, sometimes the motor will stick over the summer months, spin it manually to unstick it. PS, nothing runs if the fan door cover is open, as that shuts down the power to the whole furnace.

Oct 02, 2015 | Coleman Gas Fired Mobile Home Furnace,...

1 Answer

Pilot and burner light then gas shut off model 7900


How many degrees before it reaches desired temp, does it shut off? A thermostat is designed to shut the furnace off a couple/ few degrees before it reaches set temp. It has what is called a heat anticipater, which shuts the burner down, and lets the blower use the remaining heat from the heat exchanger to bring it up to desired temp making it more efficient. If it is more than a few degrees, replace the thermostat. You can jump out the red and white wires to confirm the faulty thermostat. If by doing this, the furnace never shuts down, until you separate the red and white wires. That confirms a faulty thermostat. Hope this helps someone.

Oct 06, 2014 | Coleman Propane Forced Air Heater...

1 Answer

Coleman evcon furnace


For sensor if you mean thermocouple that sits in the pilot light I say this is usually the problem. The thermocouple needs to heat up to a preset temp before it will allow the gas to remain on. Does the pilot light stay on? If so make sure you turn the gas knob to on from pilot/light

Oct 15, 2013 | Heating & Cooling

2 Answers

Coleman mobile home furnace pilot light turns off when blower turns on


Heat exchanger could well be split causing it to blow out pilot

Oct 27, 2012 | Heating & Cooling

2 Answers

Pilot light on furnace went out. how to i re-ignite?


I have experience with coleman furnaces installed in mobile homes. There is a red switch on the gas valve. Some models require you to slide the red switch to the top and hold. Holding is allowing gas to the pilot. You have to stick a long match,grill igniter, to stick through the inspection hole (a little flap or door to see inside the burner area) and hold the match over the pilot while holding the switch upwards at the same time. Others have a pilot selection on the gas valve which you slide the red switch to pilot and push down and hold while liting the pilot. You may need help with holding the door open while doing this. If you can you can use the copper line for the thermocouple to hold the door open for you. Good luck

Jan 15, 2011 | Coleman Heating & Cooling

1 Answer

No problem-just want info


This unit is electronic ignition

Feb 26, 2009 | Tools & Hardware - Others

1 Answer

Need replacement glass for pilot cover of Coleman Presidential II


the glass is there as a service tool to veiw pilot and flame or relite just get a peice of sheet metal and cover hole with it ,it will work short term or long term

Feb 05, 2009 | Coleman Propane Forced Air Heater...

1 Answer

Coleman Presidential II mobile home furnace. When burner lights the blower cycles on and off instead of blowing constant through burner cycle.


Is this furnace standing pilot or electronic ignition. If standing pilot i would check furnace filter then the thermastat. To test themostat first turn power off to furnace. Take thermostat off wall and take wires labled R & W and connect them together. If you have electronic ignition I would start with cleaning the flame sensor with steel wool or wire brush.If you have and more questions i will be glad to help.

Jan 17, 2009 | Coleman Propane Forced Air Heater...

1 Answer

Mobile home furnace


you probably have a bad thermostat if it wont shut down id replace the thermostat first and then have the thermocoupler checked...replace the thermostat

Aug 20, 2008 | Heating & Cooling

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