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Derating

Derating — Reduced output power due to high internal temperature

SMA · Sunny Boy Inverters

What does Derating mean?

The inverter is reducing its power output because its internal temperature is too high. This is a protective measure designed to prevent overheating and potential damage to the device.

Common Causes

  • High internal temperature.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Ensure the inverter's ventilation openings are clear and not blocked by debris or obstructions.

  2. 2

    Check that the inverter is installed in a location with adequate airflow and is not exposed to excessive direct sunlight.

  3. 3

    If the problem persists, contact your installer to investigate environmental factors or internal cooling issues.

Browse all codes in this manual (70)
Verified technical data. Last updated: April 2026

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Source: SMA Sunny Boy Inverters
Open Manual (Page 29)Search more codes in this manual