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Old 05-18-2022, 09:21 PM   #1
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Dometic Water Heater quit working

Our 2022 dual-heat WH-6GEA water heater quit working midway thru our second outing of the season. There is no firing under gas-mode, nor heating under electric-mode. The OM speaks of a red fault indicator light but I find none on the until or the central control panel. I expected a reset button but there doesn't appear to be one. Service Departments are booked for +3 months now. Any troubleshooting tips for a semi-capable RV owner suggested?

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Old 05-19-2022, 05:56 AM   #2
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Could be the thermal cut-off. Under the unit TSTAT wire. It's worth a shot.

Check part no. 93866. Not sure it's the exact one but you can see what I'm talking about. Would be great if it's that easy.
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Old 05-19-2022, 07:09 AM   #3
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Check the fuse that services the WH. If the WH is getting 12v I’d suspect the cut-off as TWP suggests, if it proves to be good I’d suspect the control board.
Search YouTube for troubleshooting suggestions.
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Old 05-22-2022, 03:09 PM   #4
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water heater issue solved..thanks for the help

Spot on with the thermal-coupler suggestion. Pulled it off and tested for continuity..it was bad. Placed a jumper across and the water heater fired on command.

Order a replacement and noted an offer that included 2 thermal-couplers and a spark ignitor combo so hopefully I'm prepared on the road for the next issue.

Again, thanks for the quick and accurate advise.

Safe travels from Sophie's Folks
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