CodeRegistry
Brands
  1. Home
  2. Fronius
  3. Solar Inverters
  4. State LED Flashing Red (Hybrid Inverter)
About·Privacy·Terms

CodeRegistry — Your global library for technical solutions.

For your safety: always follow the equipment manufacturer’s official manuals. CodeRegistry is an independent help site and is not affiliated with the brands listed here.

State LED Flashing Red (Hybrid Inverter)

Fronius Hybrid Inverter State LED flashing red — Initialisation failed or Data error

Fronius · Solar Inverters

What does State LED Flashing Red (Hybrid Inverter) mean?

The red 'State' LED on the Fronius hybrid inverter is flashing. If it starts flashing immediately after 'BusStart', it means initialisation failed. If it starts flashing during operation, it indicates a data error.

Common Causes

  • Failed system initialisation
  • Corrupted data packets
  • Internal communication issue

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    If flashing during 'BusStart', power cycle the inverter (AC and DC disconnect for 5 min, then reconnect).

  2. 2

    If flashing during operation, try to soft reset the inverter through the display or app if available.

  3. 3

    If the flashing red LED persists, contact a Fronius-trained service engineer for further investigation.

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

Related Faults

1Error 1 (Binary 0001) — Hardware fault10Error 10 (Binary 1010) — General fieldbus error102Fronius Symo Hybrid Inverter Code 102 — AC voltage too high
Source: Fronius Solar Inverters
Open Manual (Page 51)Search more codes in this manual