What could cause this?

IF that 'fixes' issue.......buy a new thermal fuse and replace it.
Clean out combustion chamber.
Enjoy hot water :B
Thank you, thank you. Saved me a lot of time and hit the tail on the head. Thanks to everyone for there suggestions also.
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Okay now that you know what the problem is be sure to buy a spare fuse & keep it in your tool box. We had this same problem with a Jayco we had. Seems that water would drip down on the fuse connections and cause problems. Moved the fuse over & taped is up and it worked fine.
Happy trails,

Old-Biscuit wrote:
You have a 2013 year trailer so your Atwood WH uses one set of t-stats for both electric & propane and uses a DC circuit board to control power to the electric element and propane gas valve.

Neither heat source working and LIGHT ON ........that light is a FAULT (failure indication)

In outside compartment is a thermal fuse (comes from circuit board & goes to t-stat----has plastic tube on it)
When it trips (one shot device---has to be replaced) it shuts-down ALL dc power so neither heat source will function.
It trips at 190*F caused by flame blowing back out of combustion chamber (spider webs/mud dabber nests etc.)




You can remove it and plug brown wire from circuit board onto terminal of t-stat...then turn ON/OFF switch OFF to reset fault then turn back ON to test fire. (Use propane so that you can hear/see main flame light off.

IF that 'fixes' issue.......buy a new thermal fuse and replace it.
Clean out combustion chamber.

Enjoy hot water :B

Thank you, thank you. Saved me a lot of time and hit the tail on the head. Thanks to everyone for there suggestions also.

You have a 2013 year trailer so your Atwood WH uses one set of t-stats for both electric & propane and uses a DC circuit board to control power to the electric element and propane gas valve.

Neither heat source working and LIGHT ON ........that light is a FAULT (failure indication)

In outside compartment is a thermal fuse (comes from circuit board & goes to t-stat----has plastic tube on it)
When it trips (one shot device---has to be replaced) it shuts-down ALL dc power so neither heat source will function.
It trips at 190*F caused by flame blowing back out of combustion chamber (spider webs/mud dabber nests etc.)




You can remove it and plug brown wire from circuit board onto terminal of t-stat...then turn ON/OFF switch OFF to reset fault then turn back ON to test fire. (Use propane so that you can hear/see main flame light off.

IF that 'fixes' issue.......buy a new thermal fuse and replace it.
Clean out combustion chamber.

Enjoy hot water :B

Some propane appliances will operate with less pressure. I had a propane range that would not operate correctly. Everything else in the RV on propane worked great. I took out the range and took it to the RV shop. It worked great. I put it back in and it wouldn't work. When I took the range back to the RV shop and asked for my money back he took me back and showed me there was nothing wrong With it. Turned out be be a bad regulator on the propane tanks. Dirty propane can destroy a regulator. Once I took the regulator into the shop I saw the problem. Low pressure and not adjustable. I was baffled because everything else on propane worked fine. Any RV dealer should be able to measure the pressure coming out of the regulator and make sure it is correct.

mbutts wrote:
All fuses and circuit breakers OK? Propane tanks have gas (stove or fridge runs on gas)?

I suspect a fuse issue. We had the same issue happen, opened up the Fuse box and it was bad. Replaced and voila!

model GC6AA10E, gas stove works, all other 12 volt items work.

Model number? Are there two thermostats on the tank?

I don't know much about his stuff but if it was me, seeing both light and gas appliances are affected, I'd be looking at my 12V system as just about everything needs 12V to operate/ignite. Is your 12V main switch on? Fuses/breakers all OK? House battery dead?

All fuses and circuit breakers OK? Propane tanks have gas (stove or fridge runs on gas)?