Refrigerator runs constantly and is too cold or freezing food in fresh food compartment.

Safety first: Unplug the refrigerator before accessing sensors or the control board.

Steps to check:

• Check temperature settings: Ensure the control is not set to the coldest setting. Adjust to recommended settings and monitor.
• Verify sensor placement: Locate the refrigerator thermistor and ensure it is properly clipped in place and not touching a cold wall directly.
• Test sensor: Measure resistance and compare to the Thermador NTC chart. Replace if out of range.
• Observe compressor: If the compressor never cycles off even at correct temperatures, the main control board may have a stuck relay and require replacement.