Charger shows E19; often associated with OCPP or backend protocol errors on connected models.

Note: This affects remote management and billing, not basic electrical safety.

• Verify backend settings: In the configuration interface, confirm the OCPP server URL, port, and credentials are correct.
• Check network connectivity: Ensure the charger has internet access (see E12 troubleshooting).
• Consult backend operator: Ask your charge point operator to confirm that the charger is correctly registered and that their server is online and compatible with your firmware version.
• Firmware update: If recommended by Amperfied, update to a firmware version with improved OCPP compatibility.