F3
KitchenAid Temperature Sensor Circuit Error

Display shows F3; temperature readings may be inaccurate or flashing.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Shorted or open thermistor, Damaged sensor wiring, Poor connection at control board, Control board analog input failure

How to Fix / Troubleshooting

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

  • Step 1 – Identify which sensor: Consult the tech sheet (usually behind the kick plate or rear panel) to determine which thermistor F3 refers to (freezer, evaporator, or ambient).
  • Step 2 – Inspect sensor and wiring: Locate the indicated thermistor and check for visible damage or loose connectors.
  • Step 3 – Reseat connectors: Disconnect and reconnect the thermistor at both the sensor and control board ends if accessible.

Accurate diagnosis requires resistance measurements and comparison to the KitchenAid temperature/resistance chart. If you are not equipped for this, contact a technician to test and replace the faulty thermistor or control board.

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Repair Difficulty

Hard 4/5

Required Part

Freezer Thermistor
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