Bottom not cooling

Make sure it is level, has proper airflow out through top vent. Also check baffle, or stack where flame sits under and blow it out good with compressed air to make sure it's clean. If you smell a hint or strong smell of ammonia, shut it off, it has a leak in cooling unit. If all ok in that area, shut it off, disconnect and plug propane line, disconnect power and remove the fridge. Turn the fridge upside down for a day or 2, then re-install and let it sit 24 hrs before turning it back on. Quite often that will take care of any blockage in flow of cooling liquid, and get things back to normal if cooling unit is still good.

there is no thermostat in cda751fw/1. apparently the pcb controls fridge temperature. which pcb, the main one or the one behind the temp dial I dont know which.

Did you by chance recieve a recall from the manufacturer .? we got one about two years ago we had the same problem, they fixed it because there was danger of fire, i would contact them

The fridge gets its cold air from the freezer through a vent(damper) between the freezer and fridge.The fan in the freezer blows air through it. Make sure this fan is running. You may have to hold the door switch in for it to run. There is a flap you adjust with the fridge temp. control. Make sure it's opening and closing when you adjust the fridge temp.
The problem could be the electronic control if you have one or the mechanical linkages.

The fridge gets its cold air from the freezer through a vent(damper) between the freezer and fridge.The fan in the freezer blows air through it. Make sure this fan is running. You may have to hold the door switch in for it to run. There is a flap you adjust with the fridge temp. control. Make sure it's opening and closing when you adjust the fridge temp.
The problem could be the electronic control if you have one or the mechanical linkages.

It is possible that your cooling unit is failing due to a blockage. The solution used to cool starts at the top of the fridge and works its way to the bottom. If there is a blockage in the cooling unit it could produce the symptom you have explained.

I don't know what type of fridge you have side by side or top mount or bottom mount but what every it is sounds like the air ducts are blocked with ice or the air damper is not working.

It sounds like your cooling unit is going out. Here's a couple of things to check. Do you smell any ammonia when you open either one of the doors? When you look at the rear of the fridge, do you see anything that looks like rusty water that has run down any of the metal tubes and dried up? If the answer to either one of these is "yes", then youll need to start looking for a new fridge or replace the cooling unit on the one that you have.

I've had this happen to my Kenmore 73503 several times. The 1st time took me a few hours to figure out what the problem was.

Basically the fridge is cooled from the freezer, so when you say your freezer is -2 degrees, it's a big tip off to the problem.

If you look very close in the freezer compartment at the back, you'll notice an opening with a little door at the top of the freezer compartment. This opening extends up the inside of the back of the fridge to the top of the fridge area via a square plastic tube.

Basically what happens in my fridge is the family loads the freezer to high especially at the top/back. This restricts or closes off the opening for the cold air to the fridge portion of the appliance ....resulting in a warm fridge, but cold freezer. Just remove the articles at the back of the freezer to correct problem. (It will take a few hours for the cold air to cool the fridge down)

Note: the temperature control unit in the fridge area controls the little door at the top of the freezer compartment, so if you haven't blocked off the opening, the next place to look would be either at the mechanical parts of the little door or the temperature control unit itself in the fridge

Defrost for 24hrs with doors open, turn back on it will then work ok. Regards Advisor