Multicooker displays E11 and may shut down or refuse to start, sometimes after a power surge.

Safety first: Unplug the cooker before opening any covers.

• Power cycle: Disconnect the cooker for 10–15 minutes to allow internal capacitors to discharge, then reconnect and test. If E11 returns, proceed.
• Inspect internal connectors: Remove the housing to access the main PCB and any secondary sensor or display boards. Reseat all ribbon cables and plug connectors firmly.
• Check for corrosion: Look for signs of moisture or corrosion on connectors and boards. Clean lightly with contact cleaner and a soft brush if needed.
• Look for surge damage: Burn marks, cracked ICs, or bulging capacitors indicate surge damage. In such cases, the PCB should be replaced.
• Firmware reset/update (if supported): Some Xiaomi smart multicookers can receive firmware updates via the Xiaomi Home app. Follow official instructions to update or reset firmware.
• Replace control board: If E11 persists after connector checks and firmware update, replace the main control PCB with an original Xiaomi part.
• Use surge protection: After repair, use a surge-protected outlet to reduce the risk of future communication or MCU failures.