tF
GE Monogram Freezer Temperature Sensor Fault

Display shows tF; freezer temperature may be too warm or too cold; ice cream may be soft or rock hard.

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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

Freezer thermistor out of range, Thermistor harness damage, Poor thermistor mounting on evaporator, Control board sensor input failure

How to Fix / Troubleshooting

Safety first: Disconnect power before accessing the freezer evaporator area or control board.

Step 1 – Verify freezer temperature:

  • Use a freezer thermometer to measure actual temperature (target around 0°F / -18°C).
  • Compare to the setpoint on the display.

Step 2 – Access the freezer thermistor:

  • Remove freezer drawers and the rear interior panel.
  • Locate the thermistor clipped to the evaporator coil or mounted on the liner.

Step 3 – Inspect and test:

  • Check for ice buildup around the thermistor that could insulate it.
  • Inspect wiring for damage or loose connectors.
  • Test resistance with a multimeter at known temperatures and compare to GE specs.
  • Replace the freezer thermistor if readings are incorrect.

Step 4 – Control board check:

  • If a new thermistor does not resolve tF, inspect the main control board for sensor circuit damage.
  • Replace the board if necessary.

When to call a technician: If you cannot access the evaporator safely or lack test equipment, contact a professional.

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Repair Difficulty

Medium 3/5

Required Part

Freezer Thermistor
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