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Green LED Off

Green LED Off — Inverter not feeding into the utility grid

SMA · Sunny Boy Inverters

What does Green LED Off mean?

The inverter is not actively feeding any power into the utility grid. This could be due to various reasons, from lack of sun to an error.

Common Causes

  • No solar power available (e.g., night, heavy shade)
  • Inverter in standby or off state
  • Error preventing feed-in operation
  • Grid conditions not met

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check if there is sufficient sunlight hitting your solar panels.

  2. 2

    Verify that the AC circuit breaker is switched on.

  3. 3

    Ensure the DC load-break switch of the inverter is in the 'I' (on) position.

  4. 4

    Check the red LED and inverter user interface for any error messages or event numbers.

Browse all codes in this manual (70)
Verified technical data. Last updated: April 2026

Related Faults

!PV-Overvoltage!!PV-Overvoltage! !DISCONNECT DC! — Overvoltage at DC input10251Event 10251 — Communication status to network switch or DHCP server changed10252Event 10252 — Communication disrupted
Source: SMA Sunny Boy Inverters
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