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Red LED solid (Network)

Solid red LED (Network) - Network fault, but inverter operating

Fronius · Primo GEN24 Inverters

What does Red LED solid (Network) mean?

A solid red light on the communication LED indicates a network fault, even though the inverter's operating status LED may show correct operation. The inverter cannot communicate with the network.

Common Causes

  • Loss of internet connection
  • Problem with the Wi-Fi router or Ethernet cable
  • Incorrect network settings in the inverter

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check your internet connection and Wi-Fi router (restart if necessary).

  2. 2

    Verify all network cables (Ethernet) are securely connected to the inverter and router.

  3. 3

    Use the Fronius Solar.start app to check the network settings and attempt to reconnect.

Browse all codes in this manual (17)
Verified technical data. Last updated: April 2026

Related Faults

1030Status Code 1030 - WSD Open (flashing red LED)1083Status Code 1083 - Insulation warning1173Status Code 1173 - ArcContinuousFault (flashing red LED)
Source: Fronius Primo GEN24 Inverters
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