523 DC low String 2 - Low DC voltage from solar string 2.

What does 523 mean?

A warning message on the display indicates that the DC voltage from the second solar string (MPPT2) is too low. This can lead to reduced power generation from your solar panels.

• Insufficient solar irradiance (e.g., shade, dirty panels).
• Faulty solar panels in String 2.
• Wiring issue in String 2.
• MPPT tracker issue.

Click steps to track your progress.

1. 1

   Check for any shading on the solar panels connected to String 2.

2. 2

   Inspect the solar panels and wiring of String 2 for visible damage or disconnections.

3. 3

   If this status code keeps recurring, contact your system installer to investigate the PV array.