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Battery off SOC 0%

Fronius Solar Battery switched off with a SOC (state of charge) of 0% — Communication error

Fronius · Solar Inverters

What does Battery off SOC 0% mean?

The Fronius Solar Battery is switched off and showing a 0% state of charge, which is accompanied by a communication error. This indicates a problem with the inverter's ability to communicate with or read the battery's status.

Common Causes

  • Loss of communication between inverter and battery
  • Battery power issue
  • Inverter power cycle needed

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Disconnect the inverter on the DC side.

  2. 2

    Isolate the inverter from the grid on the AC side.

  3. 3

    Wait 5 minutes, then reconnect the inverter on both the DC and AC sides. If the issue persists, notify Customer Services.

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 134)Search more codes in this manual