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1st bit

LAN Disconnected — Ethernet cable not connected

SolarEdge · Inverters

What does 1st bit mean?

The inverter cannot communicate via Ethernet because the physical cable is not connected or is faulty. This means the inverter might not be sending data or receiving updates.

Common Causes

  • Ethernet cable is loose or unplugged
  • Damaged Ethernet cable
  • Incorrect cable pin-out

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check that the Ethernet cable is securely plugged into the inverter and the router/switch.

  2. 2

    Inspect the Ethernet cable for any visible damage.

  3. 3

    Try using a different Ethernet cable.

  4. 4

    Verify the cable pin-out assignment if you are using a custom cable.

  5. 5

    Check the link LED on the router or switch to ensure a physical connection is detected.

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
Open Manual (Page 67)Search more codes in this manual