E9 displayed; unit may power on but none of the functions (compressor, fan, pump) start.

Safety first: Unplug the ice maker before accessing the control board. Avoid touching live circuits.

Steps to address E9:

• 1. Power cycle: Unplug the unit for at least 15 minutes to allow capacitors to discharge, then plug it back in and check if E9 clears.
• 2. Inspect control board connections: Remove the rear or side panel to access the main PCB. Check all multi-pin connectors for secure fit. Gently press each connector into place.
• 3. Look for visible damage: Examine the PCB for burnt components, cracked solder joints, or corrosion. If you see severe damage, the board must be replaced.
• 4. Check for moisture: Ensure there are no signs of water ingress around the board. If moisture is present, dry the area thoroughly and identify the source of the leak before replacing parts.
• 5. Replace the main control board: If E9 persists and other components test good, install a new HOMCOM main control PCB matched to your model. Transfer any wiring exactly as on the original, taking photos before removal.

Warning: Incorrect wiring on the control board can cause further damage or electrical shock. If unsure, contact a qualified technician.