SPT Intermittent Control Board / Sensor Lockup

Unit operates but ice production stops after several hours until power is cycled.

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.

Possible Causes

Overheating control board, Sensor drift causing logic error, Firmware glitch, Marginal power supply on PCB

Safety first: Unplug the unit before inspection.

Improve cooling: Ensure good ventilation around the unit to prevent control board overheating.
Check for dust: Clean dust from around the control board and vents.
Reset procedure: When the issue occurs, unplug for 10–15 minutes to reset. If this consistently restores operation, the board is likely failing.
Replace control board: Install a new OEM SPT main control PCB to correct intermittent lockups.

Hard 4/5

Main Control Board

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