Hydroflame Furnace
I have a hydroflame 8900 II furnace in my RV, which will not ignite. Does anyone know a way to verify the gas valve is opening? The led on the circuit board indicates power to the valve, which I verif...
Forum Discussion
It would be a good bet that the limit switch is defective. I don't think that switch is a manual reset- what makes it require manual intervention is its place in the circuit- the regular limit switch is in the main power line, so when it cools down, the furnace fires again. With the switch in the gas valve circuit, the board sees the lack of flame and locks out, so when the switch cools down, the furnace still does not fire.
At the time, Hydroflame sent out a tool kit with large rubber stoppers and an lp detector- one of the stoppers was rigged so you could inject straight propane in to the chamber- if you look somewhere on the bulkhead, there is a small metal plug. You filled the chamber with LP, stuck the detector probe through the small hole, and you could tell if the chamber was cracked without pulling the whole thing.
To inspect it, it would probably be easiest to pull the whole thing, and not try to pull just the chamber- it's been a while though, so I could be wrong.
At the time, Hydroflame sent out a tool kit with large rubber stoppers and an lp detector- one of the stoppers was rigged so you could inject straight propane in to the chamber- if you look somewhere on the bulkhead, there is a small metal plug. You filled the chamber with LP, stuck the detector probe through the small hole, and you could tell if the chamber was cracked without pulling the whole thing.
To inspect it, it would probably be easiest to pull the whole thing, and not try to pull just the chamber- it's been a while though, so I could be wrong.
