Join Date: May 2019
My Motorhome: I drive...
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Fridge not working on 12 volt
I have a Dometic RM 7291 L fridge that will not work on 12 volt with the engine running, when switched to battery it makes a quite loud buzzing noise rather like a relay not latching. It works ok on gas and mains power, I thought the P.C.B was faulty so purchased anew one (£180.00).
I fitted it and the fault is still there. I have 14 volts at the PCB connection but when switched to battery (from fridge turned off) the volts drop to 5 volts and the buzzing starts. I have checked the fuse and made sure it’s ok plus made sure the contacts are clean and tight.
Has anyone had a similar problem, if so I would appreciate their experience and if they resolved it.
Kind Regards John.