F4
Whirlpool
Ice Level Optics / Bin Full Sensor Fault
Whirlpool refrigerator ice maker shows F4 and intermittently stops making ice
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
Dirty or failed ice level optics, misaligned emitter/receiver, broken harness in freezer liner, failed ice maker control
How to Fix / Troubleshooting
Safety: Disconnect power before removing covers.
- Clean optics: On side-by-side models with optics, clean the emitter and receiver windows on each side of the ice bin opening with a soft cloth.
- Check alignment: Ensure the optics boards are fully seated and not loose or tilted.
- Run optics test: Many Whirlpool units have a built-in optics diagnostic (LED blink codes). Follow the tech sheet to interpret the LED and confirm if the boards are faulty.
- Inspect wiring: Check the harness between the optics and main control for damage.
- Replace optics kit: If diagnostics indicate failure, replace the ice level optics kit with the correct Whirlpool part.
Advertisements
Repair Difficulty
Medium
3/5
Required Part
Ice Level Optics Kit
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements