Furnace Off and On

[cmorrissey]

I own a 2000 30' Jayco Quest. My wife tried turning up the heat the other night and the furnace went through several cycles of turning on for 3 seconds and then immediately off. The blower and heat only stays on for a few seconds, then off. It repeats this every 30 seconds or so.

I removed the cover and used an air compressor to clean out the exhaust and furnace itself, however it did not fix the issue. I am now suspecting it may be the circuit board, or the thermostat perhaps? Does anyone have any suggestions or tricks to figuring out what the issue may be? I call a local repair shop, and he advised it would be $349 for a new circuit board. Any suggestions or help would be appreciated.

[Doug]

Make sure you have propane getting to the furnace.
Make sure your burners on stove light, hot water heater if you have one and frig if it runs off propane.

[troutslayer]

You might also check for wasp or dauber nests in the furnace compartment. Those can restrict the flow of propane.

[3firetrucks]

Do you see a flashing led light in the furnace? The number of flashes corresponds to what the problem is. Mine has a little sticker inside the furnace telling what the number of flashes means.

[cmorrissey]

Thanks all!

I will have a look this evening and see if I can figure this out.