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Old 05-14-2016, 01:27 PM   #1
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Furnace work Intermittently?

sunset trail 290QB thermostat is set to auto woke up this AM with cool camper, fan running but heater was not firing. Check propane good there stove and hot water work fine on gas. turned unit off and it fired and worked for a few cycles then stopped igniting again. looking for some help. Read some other threads on here and other sites found some possible solutions with air flow. On this model I can not find out how to access the furnace to make sure not webs or anything interfering with airflow. vent cover inside if removed does not give you access. no access on out site either.

How do you access it or any other thoughts or solutions to this problem?
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Old 05-15-2016, 02:33 PM   #2
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You will have to pull it out from in side. Lay some cardboard on the floor to protect it. Put mine on the workbench. To fix airflow switch. Just needed some lubercant.
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Old 08-19-2019, 01:56 PM   #3
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looking for more info about removing the furnace on this model. anyone ever remove it and have some pointers? Looks like I have to disconect the duct work that is in the front to get it out. Then as I disconect stuff is there anything I need to be careful of I don't wont to kink or rip any wires or propane lines.
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Old 08-22-2019, 09:24 AM   #4
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Just incase you have to replace your circuit board there is a highly rated USA built circuit board that replaces boards in all RV furnaces, water heaters, and the fridge. I had trouble last week with my water heater and stumbled across these boards and after a few hours of reviews and Utube vids the choice became quit obvious for myself. No more Chinese built boards that have a lifespan as long as a mosquito. This might not be your issue, but if it is, don't let a service man replace your board with more garbage. Dinosaur provides warranty for 3 years, that in itself is enough reason as to the hardware they use in there boards. (https://www.dinosaurelectronics.com/) Just saying but the choice is your !!
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