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103, 119

UDC Min / DC Voltage Too Low — Input DC voltage below minimum level

SolarEdge · Inverters

What does 103, 119 mean?

The DC voltage from the solar panels is too low for the inverter to operate. This may happen if there is not enough sunlight or if there is an issue with the solar array.

Common Causes

  • Low sunlight conditions
  • Issue with the solar array wiring or components
  • Too few panels in a string

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 level104Temperature Too High — Over temperature detected
Source: SolarEdge Inverters
Open Manual (Page 77)Search more codes in this manual