Not sure if this is going to be helpful but when you open the cover of the water heater, can you see the heater control card? We had a 2003 Pioneer that did similar things the first two times out and I finally looked at the control card. Ours had a diagnostic LED lamp that was flashing an error code. Took the rig back to the shop and told the service department about the code, found that the control card itself was the problem: one or more of the solder joints were not good and the heating separated the joint after about the third or fourth heating cycle, causing the error. Atwood had a service announcement out at the time and the control card was changed.
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Bill & Anne, Athena (cat), Jada (pup), and Cupcake (cat)
Retired Navy CPO, Vollie Firefighter and Industrial Maintenance Specialist
Wilson III: 2015 Ram Tradesman 2500 6.4l CC 4x4 SB
the gypsy, Belle III: 2018 Sprinter Limited 3531 FWDEN
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