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99-101

AC Voltage Too High Line 1/2/3 — Grid error detected

SolarEdge · Inverters

What does 99-101 mean?

The inverter has detected that the AC voltage on one or more lines is too high. This can damage equipment.

Common Causes

  • High voltage on the AC grid
  • Grid instability
  • Wiring issues

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn the inverter OFF and then ON again.

  2. 2

    If this fault persists, contact SolarEdge support.

Browse all codes in this manual (51)
Verified technical data. Last updated: April 2026

Related Faults

10, 37, 38Ground Current - RCD — High ground currents detected102DC Voltage Too High — Input DC voltage exceeds maximum level103, 119UDC Min / DC Voltage Too Low — Input DC voltage below minimum level
Source: SolarEdge Inverters
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