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1501

Event 1501 — Reconnection fault, grid data mismatch

SMA · SUNNY BOY Solar Inverters

What does 1501 mean?

The inverter cannot connect to the utility grid because the configured country data set or a set parameter value does not comply with local requirements. This prevents the inverter from safely operating with the grid.

Common Causes

  • Incorrectly configured country data set.
  • Parameter value set does not correspond to local grid requirements.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Access the inverter's user interface and log in as Installer.

  2. 2

    Navigate to the 'Set country standard' parameter and check its current value.

  3. 3

    Ensure the country data set has been configured correctly according to your local grid regulations.

  4. 4

    If the issue persists after verification, contact SMA Service or your installer.

Browse all codes in this manual (31)
Verified technical data. Last updated: April 2026

Related Faults

301Event 301 — Grid fault, voltage out of range3301, 3303Event 3301 or 3303 — Unstable operation, insufficient DC power3401, 3402, 3407Event 3401, 3402, 3407 and rapid flashing LEDs — DC overvoltage detected
Source: SMA SUNNY BOY Solar Inverters
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