Fridge problems,9-10 hours warm beer

What setting have you got the dial on ??

My 110 Waeco works better in the fridge than the freezer..

You say that the fridge works well on 240v.
If this is the case, then the fridge is working fine, just not on your 12v supply as it stands.
These fridges use a 12/24v compressor, with the 240v being an add on simple power supply that converts the 240v to 24v to run the compressor.
So, if the total works fine on 240v, why not on 12v as the compressor is obviously OK?
You should check the 12v supply to ensure that it is capable of delivering sufficient power with minimal voltage drop.
Excessive voltage drop will cause the fridge to switch off as the voltage falls and then restart when it again recovers.
Because the refrigerant expansion valve is located just prior to the freezer compartment, this section gets cold first, and so even if the compressor is running spasmodically, the freezer can appear to be OK (although unlikely to be at -18C) whilst the fridge will be warm.
Connect it to 12v and see what voltage you have at the fridge when it is either running or trying to run.
Hope this helps

Hi Stuart & Gunny
It took us a long time to get our 110ltr Waeco working properly. We ended up cutting about 3 inches off the top of the foam wall between the freezer and the fridge because it's only the cold air from the freezer that is falling into the fridge to keep everything cold. We even put in a fan to drive cold air from the freezer to the fridge but we rarely use that now because it all works really well, we have the old model with the lights and we have it on 4 lights and that keeps everything in the freezer frozen and everything in the fridge at about 3-4c. Also you want at least 8mm cable from the batteries to your fridge to stop any voltage drop.
Cheers
Rick P

Hello,
We have spent past year or two working on various models of Waeco fridges and agree most problems stem from low voltage problems in vehicles or from solar installations. Most Waecos have voltage recognition and will defend themselves and their battery to the utmost! ie not enough volts causes distinct warming of beer.
However there are modifications one can carry out if the Waeco is not starting with a good power supply or the digital readout is telling it's 78C and your beer is like rocks and tongues stick to it. It involves fitting a new digital thermostat , on /off switch and a fuse all mounted in a grey plastic box. This works it revives old Waecos and so far we have one working on 250/12volts for a year and one working off solar (bush block) no mains power close to 3 months. I'll keep you posted on the local butcher we operate on his next week.
Regards Wogsworph