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ROM

ROM — Inverter firmware is faulty

SMA · Sunny Boy Inverters

What does ROM mean?

The firmware (internal software) of the inverter is faulty. This is a critical internal error that prevents proper operation of the device.

Common Causes

  • Faulty inverter firmware.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Contact your installer to diagnose the firmware issue.

  2. 2

    If the installer cannot resolve the issue, contact SMA Serviceline for further support.

  3. 3

    Do not attempt to update or modify the inverter firmware yourself, as this requires specialized knowledge.

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