CodeRegistry
Brands
  1. Home
  2. SMA
  3. Sunny Boy Inverters
  4. All LEDs off
About·Privacy·Terms

CodeRegistry — Your global library for technical solutions.

For your safety: always follow the equipment manufacturer’s official manuals. CodeRegistry is an independent help site and is not affiliated with the brands listed here.

All LEDs off

All LEDs are off — Overnight shutdown or insufficient PV voltage

SMA · Sunny Boy Inverters

What does All LEDs off mean?

The inverter is in standby mode, typically due to insufficient input voltage for operation, such as during the night. If this occurs during a sunny day with good solar irradiation, it indicates a problem with the PV voltage.

Common Causes

  • Too low input voltage (normal at night).
  • Insufficient PV voltage during daytime.
  • Inverter manually set to STOP mode.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    If this occurs during a sunny day, contact your installer to have the PV voltage checked.

  2. 2

    Ensure the PV panels are clean and free from obstructions that might reduce light reaching them.

  3. 3

    Verify the inverter has not been manually set to STOP mode, which would prevent it from operating.

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