Ice maker shows sensor error, cycles erratically, or shuts down unexpectedly

Safety first: Unplug the unit before removing the ice bin or accessing sensors.

• Empty and remove bin: Take out all ice and remove the bin to access the bin thermistor or optical ice level sensor.
• Clean sensor area: If the unit uses optical sensors, clean the emitter and receiver windows with a soft cloth and mild soap solution. Dry completely.
• Inspect thermistor: For thermistor-based systems, locate the sensor (often mounted on the bin wall or chute). Check for damage to the sensor body or wiring.
• Check connections: Trace the sensor wires back to the control board and ensure the connector is fully seated and not corroded.
• Test thermistor: Disconnect and measure resistance at room temperature. Compare to Maytag specifications. Replace if open, shorted, or far out of range.
• Control board: If the sensor tests good and wiring is intact, the control board input circuit may be defective and require replacement.