Evaporator plate becomes a solid block of ice and the ice shovel cannot move.

Safety: Turn off and unplug the unit before removing ice buildup.

Steps:

• Manual defrost: Leave the lid open and allow the ice to melt naturally. Do not use sharp tools to chip ice off the evaporator; this can puncture the refrigerant lines.
• Check shovel motor: Once defrosted, start a cycle and observe whether the ice shovel moves during harvest. If not, test and replace the ice shovel motor.
• Sensor check: A faulty evaporator sensor may not signal the board to switch from freeze to harvest. Test and replace the evaporator temperature sensor if readings are incorrect.
• Control board: If motor and sensor are good but over-freezing continues, the main control board may be mis-timing the cycle and require replacement.