Hotpoint mistral plus.

[sunbrew]

The top refrigerator section gets down to -16 and compressor runs continuously.
Is this a simple thermistor change ?

[sunbrew]

Sorry hit the button too soon.
The top fridge thinks it is at 10 deg + (indicated)when it is actually -12 to -18 inside.
Do not see where the sensor is though, back of fridge does not appear to be removable except compressor compartment at the bottom.