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29-30

Phase Balance Error — Phase balance exceeded limit

SolarEdge · Inverters

What does 29-30 mean?

The inverter's monitoring system detected that the electrical load is not balanced across the different phases. This can affect grid stability.

Common Causes

  • Uneven electrical load across phases
  • Issues with the grid connection
  • Loose Ground wire connection
  • Incorrect L1, L2, or Neutral wire connections

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the grid connection and ensure all wires are securely connected.

  2. 2

    Verify the Ground wire connection is secure.

  3. 3

    Check the L1, L2, and Neutral wire connections.

  4. 4

    Ensure there is a symmetric load between L1 and L2.

  5. 5

    Consult your local grid authority if the problem persists.

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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