E12 displayed; unit may shut down unexpectedly; control panel may be unresponsive or reset randomly.

Safety: Always unplug the unit before inspecting the power cord or internal wiring. Do not operate the ice maker on damaged cords.

Steps:

• Check outlet: Plug the ice maker directly into a known-good wall outlet. Avoid extension cords or power strips, which can cause voltage drops.
• Inspect power cord: Look for cuts, kinks, or burn marks along the cord. If damaged, replace the power cord set immediately.
• Verify mains voltage: Use a multimeter to confirm that the outlet provides stable voltage within the specified range (e.g., 220–240 V or 110–120 V depending on your region).
• Inspect internal connections: Remove the rear or bottom cover to access the mains input terminals and internal fuse. Ensure all screw terminals are tight and the fuse is intact.
• Check the PCB power section: Look for burnt components or discoloration near the AC-DC converter on the main control board.
• Replace faulty parts: If the fuse is blown, replace it only with the same rating and investigate the cause. If the board shows visible damage or E12 persists, replace the main control PCB.