dougrainer wrote:
2 things I doubt you have checked. Doug
1. PULL the black OFF/ON switch below the gas valve. Make sure it is NOT corroded/burnt and the wire connections(spade terminals). This is a common problem and fits your problem.
2. The wire nuts where the 120 romex connects to the water heater. IF they were loose and burnt, you will have your type problem. This connection is where that relay is, you may have to pull the heater to check it. Make sure you have NO 120 power when pulling the black switch.
Oh boy. Well, I'm going to have to put on a miner's hat and figure out how to get access to the back of the on/off switch and find the AC connection point to the water heater. Wish me luck. If you don't hear from me in a few days, call search and rescue :)