IceKing ice maker shows E11; unit may not respond to button presses or responds erratically.

Safety first: Unplug the ice maker before removing the control panel or display assembly.

Step-by-step checks:

• 1. Inspect control panel: Check for signs of moisture, condensation, or cleaning fluid residue around the buttons or display.
• 2. Remove front panel: Carefully remove the screws or clips holding the user interface panel. Gently pull it forward to access the ribbon cable and connectors.
• 3. Reseat ribbon cable: Disconnect and reconnect the flat ribbon cable between the user interface and main control PCB. Ensure it is fully inserted and locked.
• 4. Dry moisture: If moisture is present, allow the panel and connectors to dry completely before reassembly. Do not use high heat.
• 5. Visual inspection: Look for corrosion on connectors or burn marks on the display board. Replace the user interface PCB if damage is visible.
• 6. Test operation: Reassemble, plug in, and test all buttons. If E11 persists or buttons still misbehave, the interface board is likely defective.

When to call a technician: If you are not comfortable handling delicate ribbon cables or if both the main board and interface may be involved, a technician can diagnose the communication fault.