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Event 6602

Event 6602 — Overvoltage grid (SW)

SMA · SUNNY BOY SMART ENERGY Inverters

What does Event 6602 mean?

The inverter has detected that the effective value of the grid voltage has exceeded the allowed voltage thresholds for a specific duration. This indicates an overvoltage condition originating from the utility grid.

Common Causes

  • Grid voltage is above the permissible range due to local grid conditions.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the actual grid voltage at the inverter's connection point.

  2. 2

    Verify that the grid connection on the inverter is secure and correctly installed.

  3. 3

    If the grid voltage consistently remains outside the permissible range, contact your grid operator to inquire about adjusting the voltage at the feed-in point or changing the monitored operating limits.

Browse all codes in this manual (28)
Verified technical data. Last updated: April 2026

Related Faults

AFCI tripped (5 arcs)AFCI tripped (5 arcs) — Inverter feed-in permanently interruptedAll 3 LEDs solidAll 3 LEDs solid — Inverter update or booting procedureBlue LED fast flashBlue LED flashing fast — System Manager requesting inverter identification
Source: SMA SUNNY BOY SMART ENERGY Inverters
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