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Green LED blinking rapidly

Green LED blinking rapidly — Starting sequence or STOP mode

SMA · Sunny Boy Inverters

What does Green LED blinking rapidly mean?

The inverter has sufficient PV power to calibrate its internal systems but not enough to begin normal operation yet. Calibration typically lasts less than 10 seconds. This status also appears if the inverter has been manually set to STOP mode.

Common Causes

  • System calibration during startup.
  • PV voltage below PV Start Voltage setting.
  • Inverter manually set to STOP mode.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Wait for the calibration to complete; it usually takes less than 10 seconds.

  2. 2

    Verify the inverter has not been manually set to STOP mode.

  3. 3

    Ensure the PV voltage remains above the PV Start Voltage setting for the required period.

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
Open Manual (Page 14)Search more codes in this manual