atwood water heater not working on electric

rk911 wrote:

Old-Biscuit wrote:

rk911 wrote:
did you check the thermal cutoff (brown wire) for continuity? it acts like a fuse. when the electric side went out on our atwood 2-yrs ago (gas side comtinued to,work) i had advice to check it and sure enough it had blown. got a new one from a parts house and was back in biz. ez to check with a volt/ohm meter.

Couldn't have been the thermal fuse
If bad then NO DC goes back to circuit board so neither gas or electric would work

Since 2004 Atwood Gas/Electric have used common DC and circuit board controls

See wiring diagram.....thermal stops DC for both



Messing around with it...replacing it you might have made ECO Connection better
When on Electric a millivolt current goes from circuit board to ECO/Gas Valve and to ground
This allows the ECO to be part of the safety control loop
No millivolt thru ECO...no Electric operation

not true. our thermal cutoff was blown..no continuity. elec would not work but gas side did. replaced TC and restored elec side.

All DC goes THRU the thermal fuse whether calling for heat from electric or gas
Look at wiring diagram....DC on brown wire stops at thermal fuse if blown
W/O DC back to circuit board NEITHER gas or electric CAN work



Unplug the thermal fuse and see if either will function