Atwood direct ignition gas/electric 10 gal water heater

[eldondo]

Thought I had it fixed by cleaning the connections with an eraser like I read about, but, now, when I flip the wall switch the red light stays on and nothing happens outside. I've cleaned all the connections, put on new eco and pt set, checked that one fuseable link kinda thing. I'm all out of cheap solutions. So I am seeking more advice. How can I check the board without just replacing it? Any other advice?

[eldondo]

Thanks a bunch old biscuit! That is just what the doctor ordered. Gonna get one of those ASAP! Thanks again.

[Old-Biscuit]

eldondo wrote:
Ok, I removed the circuit board from water heater. With my virtually unused multimeter, I believe that I have found that there is no continuity as I follow the trouble shooting guide of atwood's. I believe that means the board is shot. The part # is 93256 or 93258, kinda hard to read for sure. I have not been able to locate one either locally or on the internet. Don't know what to do.

Dinosaur Boards.....good quality
Atwood #93256 would use the UIB S board....also would need protective cover

LINK

[eldondo]

Ok, I removed the circuit board from water heater. With my virtually unused multimeter, I believe that I have found that there is no continuity as I follow the trouble shooting guide of atwood's. I believe that means the board is shot. The part # is 93256 or 93258, kinda hard to read for sure. I have not been able to locate one either locally or on the internet. Don't know what to do.

[Old-Biscuit]

That 'fuseable link kinda thing' is a thermal cut-out. A one shot heat sensing fuse that’s normally closed and sends power to the thermostat.
When tripped by excessive heat (190°F), (i.e. blocked burner or flue tube) it cuts power to the circuit board and shuts down ignition

If removed and still will not fire up then check for 12V power from circuit board to/thru normal t-stat and back to circuit board (brown wire)

[big_buford]

I would remove fuseable link and hook wire direct then give it a try. Just remember how it goes back together. Spiders like to build webs in propane/air tube make sure thats clean, but may not be your problem if it's not doing anything. Make sure all grounds are good also.