FF OP
Frigidaire Professional
Fresh Food Thermistor Open Circuit
Fresh food temperature display shows OP or dashes; refrigerator section may be too warm or too cold.
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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
Disconnected fresh food thermistor, Broken harness in cabinet wall, Failed thermistor, Loose connector at control board
How to Fix / Troubleshooting
Safety First: Unplug the refrigerator before removing interior covers.
- 1. Locate fresh food thermistor: It is typically behind a small plastic cover on the rear or side wall of the refrigerator compartment.
- 2. Inspect and reseat: Remove the cover, check the thermistor connection, and reseat the plug.
- 3. Replace thermistor: If the sensor body is damaged or the error persists, install a new fresh food thermistor.
- 4. Harness issues: If the harness is damaged inside the cabinet, professional service is recommended as foam‑insulated wiring is difficult to access.
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Repair Difficulty
Medium
3/5
Required Part
Fresh Food Thermistor
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