OP
Frigidaire Professional
Open Temperature Sensor Circuit
Refrigerator displays OP; temperature readings may be inaccurate or dashes appear on the display.
Advertisements
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.
Advertisements
Possible Causes
Unplugged or broken thermistor harness, Failed fresh food thermistor, Failed freezer thermistor, Damaged connector at main control board
How to Fix / Troubleshooting
Safety First: Disconnect power before accessing sensors or control boards.
- 1. Identify which compartment: Consult the tech sheet (usually behind the toe grille or rear panel) to see whether OP refers to the fresh food or freezer sensor on your model.
- 2. Locate the thermistor: In Frigidaire Professional refrigerators, thermistors are typically behind a small plastic cover on the liner wall or clipped to the evaporator coil.
- 3. Inspect wiring: Remove the cover and check that the thermistor is firmly connected to its harness. Look for broken wires or corroded connectors.
- 4. Reseat or replace: Reseat the connector. If the sensor is loose or damaged, replace it with a Frigidaire‑specified thermistor for your model.
- 5. Check at main board: At the rear main control, verify the thermistor harness is plugged in securely. If the harness is damaged in the cabinet, professional service is recommended.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Temperature Sensor (Thermistor)
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements