Freezer goes only to 21 degrees - camperpartsworld.com Dometic NDA1402 Sidewise Refrigerator

Your freezer should be in the range of -2 degrees to +2 degrees. Your fresh food section should be in the range of 35-40 degrees.

You only have one cooling source and that is the evaporator coil in your freezer. The freezer will attempt to satisfy the freezer temperature setting first. Having met that it will open the air damper to your fresh food section. Such a high freezer temperature will cause freezer burn on your food. It is also a waste of electricity, where the compressor is always running to meet the high demand

Do you see any ice buildup on the back panel of the freezer? You may need to remove the back panel to see if the coils are iced over. Post back your results.

In short you possibly have a gas blockage or a leak in the system and need a Tech. with gauges and testing equiptment to confirm.

Merv -

Most manufacturer's fridges are designed for 34 degrees F in the fresh food compartment and 0 degrees F in the freezer compartment. Setting the fresh food compartment to a value lower than 32 degrees will freeze any moisture in foods, fruits and vegetables and freeze water in juices and other beverages resulting in broken containers, exploding cans, etc.

What you need is another freezer. Trying to convert a refrigerator into a freezer is going to be very difficult - especially without ruining it.

Good luck!

Good day,
If your talking fahrenheit, that is well within it's limitations.
Why would you want it any colder. -5 is fine. 0 to 4 is considered normal.
R134A runs at -15 degrees. It is considered normal for the box (any box) to run 10 degrees higher than the refrigerant.
When R12 (freon) was used it ran at -21 degrees, and could maintain a box at -10, but those days are long gone.

Check to see if there is cold air coming from the freezer to the refridgerator side through the vent holes The compressor maybe getting weak or the freon charge maybe low. Does the unit run a long time before it shuts off? 50 degrees is not cold enough for a freezer. You should be around 32 or less.


John

it may be to enclosed, to close to wall, try moving it, also clean under it every 2 months, coild attract dust like mad

21/2,will give you 0 to 8 degrees,the hiher you set the dial the cooler it gets in the freezer-mike

Most likely you have a leak in the evaporator. Subzero warranties the parts for 12 years. Call them to find out what they will cover. They are agreat company and will be fair with you.

Try to defrost the unit, if it wont work check the air vents if air is present. Check also if some of your stuff may be obstructing the air vent.

sample of air vent location :