Charger shows E11 and refuses to start; app may indicate ‘communication error with vehicle’ or ‘EVSE/EV communication fault’.

Safety first: Always disconnect power at the breaker before opening any covers. Do not insert metal objects into the socket.

Steps to try:

• Unplug and reconnect: Disconnect the cable from both the charger and the vehicle. Wait 30 seconds, then reconnect firmly until fully latched.
• Inspect connectors: Check the Type 2 plug and socket for dirt, corrosion, or damage. Clean gently with a dry brush.
• Try another vehicle or cable: If E11 only occurs with one vehicle or one cable, that item is likely at fault.
• Check firmware and app: Ensure the charger’s firmware and mobile app are up to date, as some communication issues are resolved by updates.
• If persistent with multiple vehicles: The internal PLC/PWM communication module or main control board may be defective. A technician should test CP signal levels and replace the communication module or board as needed.