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SD-Imax

SD-Imax — Overcurrent on the AC side

SMA · Sunny Boy Inverters

What does SD-Imax mean?

The inverter has detected an overcurrent on the AC side of the connection. For safety reasons, it will disconnect from the grid and then attempt to reconnect. Repeated occurrences suggest a persistent issue.

Common Causes

  • Overcurrent on the AC side.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    If this problem recurs, contact your installer to investigate the AC connection.

  2. 2

    If the issue persists, contact the SMA Serviceline for further assistance.

  3. 3

    Check if any new electrical loads or changes to the AC wiring might be causing the overcurrent.

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 32)Search more codes in this manual