F1
Whirlpool
Ice Maker Thermistor / Mold Sensor Fault
Whirlpool refrigerator ice maker displays F1 and stops ice production.
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
Open or shorted ice mold thermistor, broken harness in the freezer door, failed ice maker module sensor circuit.
How to Fix / Troubleshooting
Safety: Disconnect power to the refrigerator before working in the freezer compartment or door.
- Access ice maker: Remove the ice bin and any covers to expose the ice maker assembly.
- Inspect harness: On French door models, check the wiring harness where it passes through the freezer door hinge for breaks or pinched wires.
- Test mold thermistor: If accessible, disconnect the thermistor leads and measure resistance. Compare to Whirlpool’s chart. Replace the ice maker assembly if the thermistor is integrated and out of spec.
- Check connectors: Reseat the ice maker plug at the ceiling or rear wall connection.
- Restore power and test: After reassembly, restore power and allow several hours for the ice maker to cycle. If F1 returns, replace the ice maker assembly or control board per Whirlpool’s service bulletin for your model.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Ice Maker Assembly
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements