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frostylemonade's avatar
frostylemonade
Explorer
Sep 19, 2020

Atwood 8525 furnace overheating, gas pressure too high?

Hello Friends, The Atwood 8525-III in my Bigfoot truck camper has been giving me issues since I purchased it a little over a year ago. Last fall, I replaced the control board with a dinosaur board...
Old-Biscuit's avatar
Old-Biscuit
Explorer III
Sep 19, 2020
Gas Valve is NOT adjustable

Gas pressure is controlled by Main LP Regulator
Orifice meters the flow of gas

How did you clean the orifice?
No poking anything thru it OR blowing high pressure air thru it
THAT will damaged the laser cut meter hole
Orifice should just be soaked in alcohol and air dried


Overheating can be result of damaged orifice
High LP SYSTEM Pressure
Blocked Combustion Exhaust
Blocked room air return
Ducts collapsed, blocked or too many registers closed
Room air wheel missing vans

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