Is there an internal light in a Thetford n3112caravan fridge

The 5-amp fuse that provides 12V power to the display on your Thetford N180 fridge is most likely located in the main fuse box. Some Thetford fridges have a separate fuse specifically for the display, but others use the main fuse for power to the display and other components.
I would recommend checking the main fuse box again to make sure that the appropriate fuse is in place and that it is not blown. If it is in place and not blown, you can check the wiring leading to the display to ensure that there are no loose connections or damage to the wires.
If the fuse and wiring are fine, the issue may be with the display itself and it may need to be replaced. If you are not confident in troubleshooting the issue, it is recommended to seek assistance from a qualified technician.

Hi,

Your fridge might have a battery packed attached to it. This would be one thing that could cause your fridge lights to still function even without being plugged into an outlet. Thank you.

Yes, it does. Check the wire to the electrode, if the wire is ok, then the problem is in the pcb.

check fuse.

If it won't cool on all 3 power sources the cooling unit is probably faulty. Contact Thetford asap if the unit is uner 3 years old as it should be under warranty. Thetford won't sell a replacement cooling unit, their only answer is that you need to buy a new fridge at over £600. I have this problem too and am looking for another solution but to luck so far

start by putting the fridge in a cold place or if that don't work then turn the temp down inside the fridge

is it hard to change a thetford fridge for a electolux fridge

Try manually lighting the pilot when it is clicking. If it lights you need a new thermo couple let us know what you find out from this step