Dometic Fridge Freezing Everything [How To Fix]

If your Dometic Fridge is freezing everything everything, this article helps you fix the problem permanently in simple steps.

Dometic fridge freezing everything

Why Is My Dometic Refrigerator Freezing Everything?

Your Dometic refrigerator is freezing everything because of one or more of the following:

i. A weak gasket
ii. A broken damper control assembly
iii. Overly low-temperature settings
iv. A thermostat with an electrical fault
v. A faulty thermistor
vi. Wrong placement of food
vii. Insufficient content
viii. A faulty main control board

Dometic Refrigerator Freezing Everything – What To Do

If your Dometic fridge is freezing everything, troubleshoot the following components:

1. The Damper Control Assembly

To confirm the state of the damper control assembly, locate it inside the fridge and visually inspect it. If it is broken or stuck in an open state, replace it immediately.

The damper, a small flap, controls the movement of cold air from the freezer to the refrigerator. The thermostat controls it by triggering it open or close, depending on the temperature of the air in the refrigerator.

The thermostat is supposed to prompt the closure of the damper when the temperature falls below a certain point. But because of the broken or stuck damper control assembly, it cannot respond to the thermostat’s closure prompts. Hence, it continues to supply cool air until the contents of the refrigerator get frozen.

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2. The Thermostat

To find out if the thermostat of your Dometic fridge has an electrical fault, use a multimeter to read the continuity of the thermostat. Touch the probes of the multimeter on the polar ends of the thermostat. Rotate the knob on the thermostat from its OFF position to its highest value.

In the OFF position of the thermostat, the meter should read “O.L.” As you rotate the knob clockwise, the “O.L.” changes to “0.000”. This indicates that the thermostat is in a good functioning state, electrically. But if it reads “0.000” even while it is at the “OFF” position, it indicates that the thermostat is bad. You have to change it as soon as possible.

The thermostat regulates temperature. It also activates some other devices relevant to the freezing process, when the temperature reaches a certain point. Thus, if the thermostat develops an electrical fault, it will fail in these functions. This will lead to over-freezing.

3. The Gasket

To know whether the door gasket is fine, close the fridge’s door on a thin sheet of paper. Now, gently pull the sheet until it either comes out wholly or gets torn. If it comes out whole, then know that the gasket is weak. Replace it.

The gasket of the Dometic Fridge is that mechanical seal around the sides of the door. Its function is to prevent humid air from entering the fridge. The gasket which fails to efficiently perform this function is weak.

Humid air usually contains water. It is this water that becomes frozen in the process. Now, everything in that space freezes along with the airborne water.

Supco SU2003 Universal Door Gasket 32X55






4. The Temperature Setting

Return the temperature to its recommended setting: thirty-seven to forty degrees Fahrenheit for the refrigerator; zero degrees Fahrenheit for the freezer. Your Dometic fridge over-freezes if the temperature settings are lower than these.

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5. The Thermistor

Get a heater or drying device and a multimeter. First check the rated value of the device (100Ω, 1KΩ, 10KΩ). Now, set the resistance value close to its rated resistance value. Apply heat to the thermistor.

The resistance of a thermistor decreases when the temperature increases. As you use hot temperatures, the resistance should decline. If it does not, then the thermistor is faulty. Replace it with a new one.

The thermistor is an electrical resistor. It allows your refrigerator to stay within a short range of temperatures. So, it reverses the direction as the temperature gets to a certain level. If the thermistor is faulty, the temperature will either continue to fall or rise. If the temperature continues to fall, it leads to over-freezing.

6. The Main Control Board

It is only in rare cases that the main control board gets faulty. When, however, it does, a lot of problems, including that of over-freezing, will result.

If all the other relevant components are working perfectly well yet the fridge is over-freezing, then check the main control board. Replace it with a new one if there is any damage.

Besides the components mentioned above, there are some other simple things to do if your Dometic fridge is freezing everything…

7. Place Fruits and Vegetables in the Fresh Food Section

If you do not want them to get frozen, do not place your fruits and vegetables in the freezer. Place all the contents that are not intended to be frozen in the fresh food section.

8. Avoid the Freezer Vent

The fresh food section gets its coolness from the freezer vent. Since cold air enters this section through the freezer vent, contents facing it directly will get frozen. So, keep the fresh fruits and vegetables some distance away from the freezer vent.

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9. Put Enough Items in the Refrigerator

If your Dometic refrigerator is empty to a large extent, the cool air falls to the bottom of the fridge. This makes everything that you placed at the bottom get frozen. So, you should always load your fridge to its optimum capacity.

Besides, when the unit is loaded at least ½ way full, there is enough content to absorb the cold air circulating in it. Otherwise, the few items will freeze.

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Quick Reminder

If your Dometic fridge is freezing everything, one of these is the cause: a weak gasket, a broken damper control assembly, low-temperature settings, a faulty thermostat, a faulty thermistor, wrong placement of food, insufficient content, or a faulty main control board.

Correct them and get the problem solved. The steps in this article are a sure guide for you.

Important Note

Do not repair the refrigerator if it is still under warranty. Repairing it can void the warranty when you could have had it fixed at no extra cost to you.

However, if you absolutely have to fix it yourself, be sure to get the right replacement parts. Also, unplug the unit from the wall socket or shut the circuit breaker down.

In the event you are not sure about following these steps, we have qualified refrigerator technicians here to help you. Chat with any of them today.


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