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Blue LED off

Blue LED off — No active connection

SMA · SUNNY BOY SMART ENERGY Inverters

What does Blue LED off mean?

The blue LED being off indicates that there is no active communication connection. The inverter is not currently linked to a local network or a smart device.

Common Causes

  • No active network connection.
  • Wi-Fi interface deactivated on the inverter.
  • Smart device not connected or out of range.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Verify that the Wi-Fi interface on the inverter is activated (see page 24).

  2. 2

    Attempt to establish a direct connection with your smart device or connect to your local network.

  3. 3

    If trying to connect to a network, ensure your router is functioning and the inverter is within range.

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 interruptedAll 3 LEDs solidAll 3 LEDs solid — Inverter update or booting procedureBlue LED fast flashBlue LED flashing fast — System Manager requesting inverter identification
Source: SMA SUNNY BOY SMART ENERGY Inverters
Open Manual (Page 25)Search more codes in this manual