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Green LED off

Green LED off — Inverter not feeding into grid

SMA · SUNNY BOY Solar Inverters

What does Green LED off mean?

The inverter is not actively feeding any power into the utility grid. This could be due to lack of solar power, grid disconnection, or a fault.

Common Causes

  • No solar irradiation (e.g., night time).
  • Grid connection issues or outage.
  • Inverter is in standby or off mode.
  • Internal fault or error.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check if it is nighttime or if there is sufficient solar irradiation.

  2. 2

    Check other LEDs for indications of errors (red LED glowing) or communication (blue LED).

  3. 3

    Verify the utility grid connection is stable and operational.

Browse all codes in this manual (31)
Verified technical data. Last updated: April 2026

Related Faults

1501Event 1501 — Reconnection fault, grid data mismatch301Event 301 — Grid fault, voltage out of range3301, 3303Event 3301 or 3303 — Unstable operation, insufficient DC power
Source: SMA SUNNY BOY Solar Inverters
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