Looking for a way to solve the problem of your Thermador refrigerator not cooling? Read our guide here to learn how…
Thermador Refrigerator Freezer Not Cooling – Solutions
If you find that your Thermador refrigerator freezer is not cooling, check the following parts and fix them:
1. Are the Condenser Coils Dirty?
Usually, the coils are under the refrigerator so you can easily see if they are dirty. Vacuum them thoroughly to remove dust, dirt and grease. Go a step further to dust them with a cloth to remove any remaining dirt.
Dirty coils mean the refrigerator will not be able to keep a cool temperature. This is because the coils remove the heat from the hot gas or refrigerant that goes through them. This way, the refrigerant won’t carry the heat to the refrigerator and make it warm.
2. Is the Evaporator Fan Motor Defective?
To check if the motor is defective, try and spin the blades by hand. If the blades give some resistance in spinning, then you know the motor is bad and you should replace it.
Another way to know is by listening for any unusual noise from the motor. This clearly indicates that something is wrong. In addition, check the motor by testing the windings with a multimeter. If you find no continuity, replace the motor.
The evaporator fan is responsible for cooling the evaporator coils and spreading air in the refrigerator and freezer. If it cannot do this effectively, the unit will not cool.
3. Is the Condenser Fan Motor Faulty?
Spin the fan blades by hand to check the motor. If they turn well, the motor is good but if not, the motor is bad. Also, check if there is any obstruction to the blades, like a piece of cloth or hair. This is especially true if you have pets. Remove the object if there is any.
But if you don’t find any, check the motor for continuity with a multimeter. Without continuity, the motor is bad and needs a replacement.
The condenser fan keeps the compressor and condenser coils cool. If it doesn’t function well, the refrigerator will heat up and not cool.
4. Is the Temperature Control Thermostat Still Working?
Move the thermostat from the lowest to the highest setting and wait to hear a click. This will tell you the thermostat is still functional. If you hear the click, the thermostat is fine but if you don’t, then test it with a multimeter for continuity. If there is no continuity, the thermostat needs to be replaced.
The temperature control thermostat sends voltage to the evaporator fan motor, the compressor and, where applicable, the condenser fan motor. If it is bad, the refrigerant could find it difficult to run as it should.
5. Is the Thermistor Bad?
To check if the thermistor is bad, test its resistance with a multimeter. It should change alongside the temperature of the refrigerator. If you don’t find this, the thermistor is bad and needs changing.
The thermistor reads the refrigerator temperature and sends its results to the control board. The board, using the results, sends power to the evaporator fan and the compressor. If the results are wrong, the refrigerator will not function as it should.
6. Is the Start Capacitor Functioning?
Test the capacitor with a multimeter for continuity. If you don’t find continuity, then you know the capacitor is bad. So, it won’t be able to help the compressor start. And if the compressor doesn’t start, the refrigerator will not run and will not cool.
7. Is the Start Relay Still Working?
With a multimeter, test the relay between the start and run terminal for continuity. If there is no continuity between them, replace the relay. Furthermore, if you detach the relay from the compressor, shake it and hear a rattle, replace it. Additionally, if you get a burnt smell from the relay, change it.
Without the start relay, it is possible the compressor will not run. And if the compressor doesn’t run, the refrigerator won’t cool.
In some rare cases, the problem could be the compressor, the temperature control board or the main control board. When you check all the parts above and find they are not defective, check any of these three main parts. But if you cannot check them yourself, call a technician to check them and advice accordingly.
These solutions are applicable to all types of Thermador refrigerators, including built-in refrigerators, wine fridges and mini fridges.
The video below visually explains how to fix a wine fridge that is not cooling…
Check out these other articles on refrigerators not cooling for other brands…
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Important Note: If you find that the repairs are too technical or complex for you, call a qualified technician to fix the refrigerator. better still, contact the service center of Thermador. they usually know how best to help you,