Make sure the AC breaker to the box that the electric heating element is plugged in to has not tripped and you have AC power there.
Does it get hot when on electric if you feel the heat shield with your hand?
Seems like the absorption part is fine if it works ok on propane.
The circuit board checks temperature and if it doesn't make a certain temperature in a certain amount of time it shuts it off with an error (Norcold, I assume Dometic works same way).
Sent from I-95 in Coosawatchie SC while DW is driving LOL.
TT - 2021 Rockwood 2608BS
TV - 2020 F-250 XLT 4WD SRW 6.2L gas