Check L-N-PE — L and N swapped or PE not connected

What does Check L-N-PE mean?

This message indicates that the Live (L) and Neutral (N) wires on the AC connection are incorrectly swapped, or the Protective Earth (PE) connection is missing. This is a critical safety and operational fault.

• L and N swapped on the AC connection.
• PE (Protective Earth) not connected.

Click steps to track your progress.

1. 1

   Immediately stop using the inverter and do not attempt to reset it yourself.

2. 2

   Contact your installer to inspect and correct the AC connection wiring.

3. 3

   Ensure the PE connection is properly established for safety reasons.