Haier ice maker shows E10 and stops; no ice is produced even though the unit powers on.

Safety first: Unplug the ice maker before accessing the control board. Avoid static discharge by grounding yourself.

Steps to attempt recovery:

• Hard reset: Unplug the unit for at least 10 minutes to allow capacitors to discharge. Plug back in and see if E10 clears.
• Inspect wiring harnesses: Remove the control panel and access the main PCB. Check all multi-pin connectors between the display, sensors, and main board. Reseat each connector firmly.
• Look for board damage: Examine the PCB for burn marks, cracked solder joints, or swollen capacitors. Any visible damage usually requires board replacement.
• Check power supply: Verify that the board is receiving correct line voltage and low-voltage outputs (per Haier service manual) using a multimeter. If voltages are missing or unstable, the board is likely defective.
• Replace control board: If all external components test good and E10 persists, replace the main control board with a Haier-approved part. Transfer any jumpers or settings as instructed.

When to call a technician: Control board diagnostics and replacement are best handled by a qualified technician, especially if firmware updates are required.