103

Gateway Charger/Registration Mismatch

Fronius · Perfect Charging

What does 103 mean?

The gateway device is online but either does not detect a charger, or a different charger is registered than the one attempting to connect. This prevents the current charger from utilizing the gateway's services for data transmission or remote control.

Common Causes

  • The specific charger is not correctly registered or authorized with the gateway system.
  • Multiple chargers are attempting to connect to a gateway configured for a single charger connection.
  • A configuration error on the gateway regarding the allowed or associated charger identifiers.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify the registration status and unique identifier of the charger with the gateway's configuration.

  2. 2

    Check the gateway's configuration to ensure it supports the number of connected chargers and that the current charger's ID is recognized.

  3. 3

    Ensure the charger's unique identifier (e.g., serial number, configured ID) matches what is configured in the gateway's system.

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Verified technical data. Last updated: March 2026

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