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9003

Event 9003 — Grid parameter locked

SMA · Sunny Boy Inverters

What does 9003 mean?

Changes to grid-related operating parameters are blocked. To make changes, you must log in using the SMA Grid Guard code.

Common Causes

  • Attempting to change protected grid parameters without sufficient authorization
  • Grid Guard code session has expired

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Log into the inverter's user interface using the correct SMA Grid Guard code.

  2. 2

    Ensure you have the 'Installer' access level to modify grid parameters.

  3. 3

    If you do not have the Grid Guard code, contact your installer or SMA Solar for assistance.

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 73)Search more codes in this manual