420

No communication possible with the Fronius Datamanager

Fronius · Primo GEN24 Operating Instructions

What does 420 mean?

This code indicates a loss of communication between the inverter and the Fronius Datamanager. This means data logging, monitoring, and remote control functionalities via the Datamanager are currently unavailable.

Common Causes

  • Network cable disconnection or damage between the inverter and Datamanager.
  • IP address conflict or incorrect network settings.
  • Malfunction of the Datamanager unit itself or the inverter's communication interface.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    If the status code is displayed continuously, notify a Fronius-trained service engineer.

  2. 2

    Check the network cable connection between the inverter and the Fronius Datamanager for damage or secure connection.

  3. 3

    Verify network settings (e.g., IP addresses, subnet mask) for both the inverter and the Datamanager.

Browse all codes in this manual (60)
Verified technical data. Last updated: March 2026

Related Faults

Source: Fronius Primo GEN24 Operating Instructions