Community Forums

csm · 03-21-2010, 10:26 PM

I just bought this 26' coachmam with a 6 gal auto light HWH by atwood. It would burn for a couple of minutes and shut off. I checked the air flow and removedf the valve and tube that the gas goes through and insured they were clean. Drained the tank twice and oday it stayed on for ten minutes before cutting off. Now it sparks but will not light. I allready found out the little wire that goes from the board was burned when I bought the camper so I removed and attached the wire straight in the connector untill I can buy another one. I also had to take the guts out of the one way valve so the hot water would make it to the facut. Now I have spark and no fire. Go a new tank of lp so it's not that. Any help would be greatly accepted.

DriVer · 03-22-2010, 06:43 AM

Quote:

Originally Posted by csm

Any help would be greatly accepted.

Have you checked the diode or safety valve that is connected to the heater. It has a clear plastic jacket over the leads leading to and from the spade corrections ?? If the valve is blown you might get a red LED on your status panel, your heater will attempt to light however it won't be able to. The valve is a one way device.

csm · 03-22-2010, 07:37 AM

I'm not sure what that is or where it is unless you're talking about the connector wire that is about two inches long that is susposed to burn into to stop the gas in case of bad blowback. If that is the one, it was burned badly so I just bypased it until I can get a new one. If that is not what you're refering to, then I am still lost. Keep trying please. kThankks you

shipwreck1 · 03-23-2010, 01:34 PM

the wire your referring to is a TCO thermal cut off link, basically a link that shorts when it gets burnt by the flame blow back,it cuts off the 12volt circuit, if the water heater tries to spark then the link it good, the problem is the gas solenoid appears to not be opening, this could and probably is the circuit board, these units simple by design. you can get a schematic from atwood, i beleive on their web site.
its never a good idea to bypass the TCO with a straight wire, Atwood installs this TCO to prevent fires, i know as my atwood tried to burn down my trailer as there was a side wind blowing so hard it pushed the flame back out the burner tube and up the side of my trailer. Always keep a pack of TCO's with you.