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
If the status code is displayed continuously, notify a Fronius-trained service engineer.
- 2
Check the network cable connection between the inverter and the Fronius Datamanager for damage or secure connection.
- 3
Verify network settings (e.g., IP addresses, subnet mask) for both the inverter and the Datamanager.
Verified technical data. Last updated: March 2026
Related Faults
Source: Fronius Primo GEN24 Operating Instructions