Is it not a 2 way heater, gas/elec? If so try it on electric, generator or shore power, & you can do both simultaneously to have faster recovery. Not sure which brand you have, but the Suburban heater has a thermostat on the heater outside behind the black reset cover which could be bad, don't know about the Atwood brand.
The heater also requires 12 volt to operate the circuit board, so check coach batteries.
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Fulltimed 10+ years
Sold '13 Thor Redwood 36 FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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