Thetford N175 fridge error code 10 12v

[WallaceandGromit]

Greetings as the title to be honest it's not worked since the great flood of 2023 when the loo decided to pump 50 or so litres of fresh water into the van so it came up on my round-to-it list bypassed the original wiring connected it to a spare battery and got error code 10 which is what I got after the flood, checked the voltage at the panel at the back of the fridge 12.87 volts. The heater banjaxed me thinks getting 1.o ohms on my cheap flea bay meter so if there's more than 3 wires my brain shuts down hence I am seeking guidance from you wonderful people

Oh, by the way, the boards are no longer available