Ice maker runs continuously without cycling off, even when little or no ice is produced.

Safety first: Unplug the unit if it runs excessively hot or for many hours without stopping.

Steps to troubleshoot:

• Check sensors: Inspect and clean the evaporator temperature sensor, ambient sensor, and ice full sensor. Ensure they are properly mounted.
• Observe operation: After restarting, monitor whether the unit ever enters a harvest or standby mode.
• Replace suspect sensors: If readings are clearly wrong (e.g., unit thinks it is always warm), replace the affected sensor.
• Control board: If sensors are good but the unit never cycles off, the main control board relay or logic may be stuck and should be replaced.