E6
Tristar
Control Board Communication / Internal Fault
Display shows E6; unit may power on but will not start an ice-making cycle.
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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
Defective main control PCB, Corrupted firmware, Loose harness connections between display board and main board, Power surge damage
How to Fix / Troubleshooting
Safety first: Unplug the ice maker before opening the control housing. Avoid static discharge to electronic boards.
Steps to address E6:
- Power cycle: Unplug the unit for 10 minutes to allow capacitors to discharge, then plug back in. If E6 returns, continue.
- Inspect control connections: Remove the top/front panel to access the display PCB and main control PCB. Reseat all ribbon cables and wire harnesses.
- Check for visible damage: Look for burn marks, swollen components, or corrosion on the main control board.
- Verify supply voltage: Ensure the outlet provides stable voltage within the range specified for your Tristar model (typically 110–120V or 220–240V). Avoid using undersized extension cords.
- Replace control board if needed: If connections are good and E6 persists, replace the Tristar main control PCB (and display PCB if sold as a kit). Transfer any jumpers or settings as per the service documentation.
- Reassemble and test: Refit panels, restore power, and run a full cycle to confirm normal operation.
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Repair Difficulty
Hard
4/5
Required Part
Tristar Main Control PCB
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