Kenmore ice maker's drain pump runs continuously or cycles frequently even when there is little water.

Safety First: Unplug the unit before working on the pump or sensors.

• Inspect float/sensor: Access the drain reservoir and ensure the float moves freely. Clean any slime or debris.
• Check for siphoning: Ensure the external drain hose has a proper air gap or loop to prevent back-siphoning that can trigger the pump.
• Test sensor contacts: Disconnect the sensor and check continuity while moving the float. Replace if stuck closed.
• Control evaluation: If the pump runs even with the sensor disconnected, the control board relay may be stuck and require board replacement.