F3
Princess
Water Level Sensor Circuit Error
Display shows F3; unit may not start or stops with alarm; water level appears normal.
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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
Shorted or open water level float switch, Disconnected level sensor harness, Scale causing float to stick at top or bottom, Faulty main PCB input
How to Fix / Troubleshooting
Safety: Unplug the unit and remove the ice basket before accessing the reservoir.
Steps:
- 1. Clean reservoir: Drain the water and wipe the reservoir to remove debris and scale.
- 2. Free the float: Locate the float assembly and move it up and down by hand. If it sticks, clean the guide and float body thoroughly.
- 3. Check switch continuity: With a multimeter (and power disconnected), test the float switch contacts while moving the float. Replace the float switch if it does not change state.
- 4. Inspect wiring: Ensure the float switch harness is intact and firmly connected to the control board.
If F3 remains after these checks, the main control PCB may be misreading the sensor and could require replacement.
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Repair Difficulty
Medium
3/5
Required Part
Water Level Sensor Float Switch
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