1989 Jayco 2way fridge problem

Hi
Being able to freeze in the freezer But only cool in the fridge section can be an indication it has lost gas.
IF there is ANY odour of ammonia inside or around the rear then you have this problem& expensive to fix. A green deposit inside the freezer or on the fridge evaporator would further indicate this as the problem.
A few other points 1st.
#1 Is he fridge leval In all directions & I don't mean the van ? .A saucer of water placed on the freezer will allow you to get it reasonably level.
Operating out of level can do permanent long term damage which of course would not be aware of.
#2 have you checked the gas flame to ensure it is correct size & shape , jet not clogged , burner displaced etc. ?
#3 is the rear well ventilated?
#4 is the thermostat ok ?A rough check is to turn it to max & see if the flame encreases in size, leave it run there over night & then turn it right back ,but not OFF the flame should decrease in size.

Are you making sure it level? or maybe he didnt and blocked the lines??

I dont know if there is such a thing as a 2 way fridge. 3 way Electrolux fridges are common inc 12 volt ,240 volt and lpg. Try turning the selector knob. They can be fussy things but as it is an 89 model and doesnt work properly I suggest you have it seviced by a pro. All you can get here are opinions, you need an expert. Best of luck.

Thanks for the replies guys,
oldtrack123, there is no smell of ammonia inside or out. there is a sight level on the front of the van and another on the alloy strip near the door. It's in the middle of the lines, on both. Not to say that they are right, i will double check this tomorrow with my work level I use for kitchens. I will also try the saucer with water in it, :)
Your point about the correct flame size and shape, maybe a concern. I've notice through the sight glass it seems very dull.
I will investigate this further.
It has very good ventilation,
I will also check the thermostat, using your method.
Cheers for mentioning about using soapy water after tightening fittings. I've always use this method to find leaks at fittings or breaks in hoses.
One thing I didn't mention and had forgot about, was that between the regulator and the the bottle there is a 'Gas Fuse' and the glass gauge has what looks like water droplets in it. Is this a normal thing?

Cheers for every bodies thoughts.

Ok, this is where I'm up to with the Fridge,
I checked it for being level and it is. The fidge side of things now get down to 4 degrees and holds that temp. It works well on Gas.
The 240 V doesn't work at all. I contacted a local bloke to have a look at it later in the week.
Thanks for the advise guys,