hot water heater won't fire

You do know you aren't supposed to heat hot water.

Check the fuse that is located under the relief valve. If it is blown replace then restore the air cushion in the water heater.

Good Luck Don

clean the connectors. That happens a couple times a year. Avoid multiple failed restarts as the propane will accumulate and when you do get an ignition it will go bang upsetting your neighbor

pops

I had same problem. Change the ignighter. The red wire on the Atwood does two things. One... it sends power from the board and two... it sends a signal back to the thermocouple to continue the burn. I paid about $43.00 for my replacement and it works great!!!! Good luck

Happens all the time on my 15 year old Atwood. Open the external panel and disconnect the white connector to the PC board.

Plug it back in and it will likely fire right up....it is just oxidation on the contacts that is likely causing the issue.

Bryant RV has a bunch of service manuals for refrigerators, furnaces, and if you scroll down water heaters.

Good 12V DC power needed...check for 12V to ON/OFF switch and then to module
Bad ground connection(s)....clean/tighten
Bad connections on module board...pull connector and clean contacts with eraser
Blown fuse on module board
Thermal Cutout Bad (one time diode that is connected to normal t-stat...blows if there has been a back flame from burner tube)
Bad t-stats (normal or ECO)....connections dirty/loose/corroded or t-stats are open

And then of course.....bad module board

Need to get out a voltmeter and check for where 12V stops

clean the electrical connectors.