Dometic Fridge Internal Light Fault

S6 Kevin replied on 27/10/2016 13:03

S6 Kevin

Posted on 27/10/2016 13:03

Our motorhome has a Dometic fridge (Model RMS 8555) fitted with a 4 blue LED internal light cluster by the door catch. On a recent trip these lights started to dull and then stopped working. I've tested the light supply lead and there doesn't appear to be any voltage at the connector. Although the connector is quite small and getting the meter probes in was fiddly. The fridge itself functions as it should. Thoughts anyone?

4 replies

MichaelT replied on 27/10/2016 13:27

MichaelT

Motorhomer

Posted on 27/10/2016 13:27

Is the switch stuck in? Perhaps they have just failed and need renewing, I think they come as a unit. Check any fuses you have and maybe any batteries in the fridge itself if any.

QFour replied on 27/10/2016 20:24

Member

QFour

Motorhomer

Posted on 27/10/2016 20:24

https://www.manualslib.com/manual/833267/Dometic-Rm-8400.html?page=20#manual

Wiring Diagram might help ..

If you look at the diagram the feed for the lights comes straight from the control box. Don't be fooled by the lack of voltage at the LED Lights they maybe being driven by a square wave. The idea being that they can control the illumination. It also gives you that slow start to the lights as you open the door. Only way to really see it there is a voltage is with an oscilloscope. You could of course check the switch or just short the contacts together on the control box.