F2
Fisher & Paykel
Evaporator Temperature Sensor Fault
Wine cooler displays F2 and may run continuously or not cool correctly; temperature reading is inaccurate.
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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
Failed evaporator thermistor, thermistor wiring harness damaged by ice or vibration, loose connector at evaporator or PCB, faulty main control board
How to Fix / Troubleshooting
Safety: Unplug the wine cooler before removing any internal panels or working near the evaporator coil. Edges of metal panels and fins can be sharp.
Steps to address F2:
- Confirm airflow and frost: Open the cabinet and inspect the rear internal panel. Heavy frost buildup or ice behind the panel can damage or dislodge the evaporator sensor.
- Access the evaporator area: Remove shelves and the inner rear panel (usually held by screws). Carefully pull the panel forward to expose the evaporator coil and sensor.
- Locate the evaporator thermistor: It is typically clipped to the evaporator tubing or mounted in a small plastic holder on the coil. Verify it is firmly attached and not dangling or encased in solid ice.
- Inspect wiring: Follow the sensor wires back to the harness connector. Look for chafing, broken insulation, or corrosion at the plug. Reseat the connector.
- Test the sensor: With power off and the sensor unplugged, measure resistance with a multimeter. Compare to the temperature/resistance chart in the service manual. Replace the sensor if it reads open, shorted, or far out of spec.
- Defrost if iced over: If the sensor is buried in ice, allow the unit to fully defrost (doors open, towels in place) for several hours, then reassemble and test. Persistent F2 after defrost usually indicates a bad sensor or wiring.
- Control board evaluation: If a new sensor and intact wiring still result in F2, the main control board's sensor input may be defective and require replacement.
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Repair Difficulty
Hard
4/5
Required Part
Evaporator Temperature Sensor
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