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All 3 LEDs solid

All 3 LEDs solid — Inverter update or booting procedure

SMA · SUNNY BOY SMART ENERGY Inverters

What does All 3 LEDs solid mean?

All three LEDs (Green, Red, Blue) glowing solidly at the same time indicates that the inverter is either performing a software update or is going through its initial booting sequence.

Common Causes

  • Inverter is performing a software update.
  • Inverter is in the process of booting up.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Wait for the booting or update process to finish; do not interrupt the power supply during this time.

  2. 2

    Ensure a stable power supply to prevent any interruptions or data corruption during updates.

  3. 3

    If this state lasts for an unusually long period (e.g., more than 10 minutes), try cycling the power by turning off and on the DC and AC breakers.

Browse all codes in this manual (28)
Verified technical data. Last updated: April 2026

Related Faults

AFCI tripped (5 arcs)AFCI tripped (5 arcs) — Inverter feed-in permanently interruptedBlue LED fast flashBlue LED flashing fast — System Manager requesting inverter identificationBlue LED offBlue LED off — No active connection
Source: SMA SUNNY BOY SMART ENERGY Inverters
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