E12
Tower
Keypad / Control Panel Communication Fault
E12 error code, unit stops and may show abnormal ice size selection behavior.
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Safety Warning
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.
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Possible Causes
Loose ribbon cable between keypad and main PCB, moisture intrusion in control panel, failed touchpad, defective main control PCB
How to Fix / Troubleshooting
Safety: Unplug the Tower ice maker before opening the control panel.
- Dry the panel: If the panel has been exposed to spills or condensation, wipe it dry and allow it to air out for several hours before retesting.
- Access control panel: Remove the screws securing the front or top control panel. Carefully lift it to expose the ribbon cable or wiring harness.
- Check connections: Reseat the ribbon cable or connector between the keypad and main PCB. Ensure it is fully inserted and locked.
- Inspect for corrosion: Look for green/white corrosion on the keypad PCB or main board. If present, the affected board should be replaced.
- Test buttons: With the unit reassembled and powered, test each button. If some buttons do not respond and E12 persists, replace the keypad/control panel assembly.
- Main PCB: If a known-good keypad still triggers E12, replace the main control PCB.
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Repair Difficulty
Medium
3/5
Required Part
Control Panel / Keypad Assembly
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