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

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On our Coleman Furnace, we were getting a code of Combustion Air switch closed. After much fidling and googling ways to fix it (we tried everything), We bought a new switch and new hoses. But we are still getting the same code. We have fire in the box and the blower motor is running. We can only get it to light by sucking on the hose. But it won't stay lit or blow heat. What do we do next?

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May be the thermo coupler

Posted on Sep 15, 2010

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Coleman combustion air switch failed to close


Hi, new switch can be found on amazon... here: Amazon com Coleman air switch. I hope this was helpful. Cheers

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Heater flashes 3 times says it means combustion switch failed to close


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Coleman mobile home furnace...Model number DGAA077BDTB...The furnace about a month ago started going out ( flash code- Combustion Air switch stuck closed)We replaced the thermostat on the wall and it...


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