Beko FF6091X freezes food

[ubdka]

Greetings to everybody!

My Beko FF6091X fridge completely freezes my food, even on the lowest setting.

I’ve been reading, and based on what I’ve read, a broken temperature sensor or (less frequently) a faulty PCB are the most likely causes.
I replaced the latter because it was cheap and simple to do so, but the issue still persists.

I now believe that the sensor is the source of the issue, so I disconnected the sensors from the control board on the back and measured the resistance levels at the sensor pins.
The resistance was 15.5kOhm after the refrigerator had been unplugged for nearly an hour. The value was 14.8 kOhm when I remeasured it 15 minutes later, while the refrigerator was warming up.
I therefore feel that the sensor is generally functioning, or at least that its resistance varies in the proper manner.

Additionally, I measured what I believe the freezer sensor, which has a value of roughly 44 kOhm, and is also slowly decreasing. Please note that I have the freezer closed since it contains food that I don’t want to spoil.

My questions are the following.
1) Is there a table for this sensor to translate kOhm to temperature? I have no idea if the values are off or in the right range
2) If it is not the sensor and not the PCB, what else can it be?
3) This may be a bad idea: if the resistance value is off but the sensor broadly works, does it make sense to offset the base resistance by putting another resistor in series instead of changing the sensor (which is a pain to do)?

Thanks!

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