Dometic e1 code

Hey all. So I made the mistake of plugging into a 15 amp garage breaker and ran the ac. It’s a dometic single unit. It is now flashing the e1 code. I tried the hard reset and resetting the thermostat. So I am now assuming I burned something out. I understand that it is a communication issue. So it could be the thermostat board, main ac board, wires, connector.
Does someone have any suggestions on how to start diagnosing what part I burned up so I don’t have to start randomly changing things.