Event 6438

Qualified person

Event message:

  • Self-diagnosis

  • Interference device

Explanation:

The conditions for operation of the internal AC converter stage of the inverter have not been met. The inverter disconnects from the utility grid for safety reasons.

If the event message occurs frequently or is permanently present, perform the following corrective measures.

Corrective measures:

  • Disconnect the inverter from all voltage sources.

  • Wait until the LEDs have gone out.

  • Ensure that the technical data for the DC input of the inverter is observed.

  • Ensure that the mains voltage at the AC connection of the inverter and in the subdistributor is in the permissible range.

  • Recommission the inverter and make sure that the internal relays audibly switch.

  • If the event message persists or the relays do not audibly switch and the inverter possibly reports event message 7702, the inverter needs to be replaced.

    Event 6422
    Event 6501