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

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My Coleman gas furnace turns on, ignites and the flame will keep going out. The entire time the blower motor will stay on humming until its hot to the touch. If I tap the gas pipe I can get the pilot to stay on and then the furnace will work. This only happens when the temps outside are warm in the day and freezing at night. Could it be some kind of vapor lock from the propane tanks? Or a bad gas valve.

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  • Coleman Master
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IT could be the temp is too cold at night and the tank cannot make vapor ie gas, The liquied has to boil inside to make the gas you can get a heat blanket to warm your tank. Ask you gas suppier if they have one.

Posted on Mar 20, 2011

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Posted on Jan 02, 2017

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