E8
SMAD
Main Control Board Communication / Internal Fault
E8 error appears; unit may start but shuts down quickly, often with no compressor operation.
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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, shorted low-voltage circuit, loose multi-pin harness connections
How to Fix / Troubleshooting
Safety: Always unplug the ice maker before accessing the control board. Avoid touching board components with bare hands to prevent static damage.
Steps:
- Power cycle: Unplug the unit for at least 10 minutes to allow capacitors to discharge. Plug back in and check if E8 clears.
- Inspect wiring: Remove the control panel or rear cover to access the main PCB. Verify all multi-pin connectors are fully seated and locked.
- Check for damage: Look for burnt components, discoloration, or a burnt smell on the board. If present, the board is likely defective.
- Verify supply voltage: With caution and proper tools, confirm that the board is receiving correct line voltage at its input terminals (only if you are trained to work with live circuits).
- Replace PCB: If wiring is intact and E8 persists, replace the main control board (PCB). Transfer any removable connectors one by one to avoid miswiring.
- Reassemble and test: Refit covers, restore power, and run a full cycle to confirm normal operation.
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Repair Difficulty
Hard
4/5
Required Part
Main Control Board (PCB)
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