Event 6901 — Self-diagnosis, Input B defective

What does Event 6901 mean?

The inverter has detected an error specifically at its DC input B. This indicates a problem with the photovoltaic string connected to input B or with the inverter's internal input circuitry for that channel.

• A fault with the PV string connected to input B.
• An issue with the inverter's internal DC input B circuitry.

Click steps to track your progress.

1. 1

   Check whether a PV string is correctly and securely connected to input B.

2. 2

   Visually inspect the wiring and connections for input B for any signs of damage or loose contacts.

3. 3

   If the problem persists after checking connections, contact Service for diagnosis.