Furnace fails to ignite

Question

Hi everyone,I have a 2015 Coachman 27QBC which has a standard furnace installed. I have only used this unit about a dozen times - 100%. But. Now the units fan will turn on, try to ignite 3 times then shut down...especially in cold weather!!During testing to determine cause the unit will ignite at random but generally during 80+ f ambient temperature. The deep cycle is new and charged and the propane is full.Any suggestions as to what will fix this would be appreciated.Thanks

old_guy · Answer

will your stove light?

dutch_12078 · Answer

The make and model of the furnace would help us. Try unplugging the 4-wire connection at the igniter board and the wire on the high voltage coil and reconnecting them 2-3 times to quick clean any corrosion on the contacts. The flame sensor works at millivolt levels and it takes very little corrosion to interrupt it.

ib853347201 · Answer

sounds like a propane supply issue.switch out the tank for another and try again.

shum02 · Answer

Could also be the gas igniter has moved out of position, just a smidge and she won't light. That's a fun one.

Unless you are pretty inclined mechanically take it to someone who knows what they are doing. Propane gas and electricity are a explosive combo to diagnose and fix!

swphotobug · Answer

Could be you are at too high of an altitude and not enough oxygen in the air for the furnace to stay lit.

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Furnace fails to ignite

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