Riso — Faulty PV system insulation to ground

What does Riso mean?

The electrical insulation of the PV system from ground is faulty. This means the resistance between the DC plus and/or DC minus connection and ground is outside the safe operating limits, indicating a potential ground fault.

• PV system not properly insulated.
• Ground fault.

Click steps to track your progress.

1. 1

   Contact your installer to check the system's insulation.

2. 2

   Your installer will determine if a ground fault has occurred within your PV system.

3. 3

   Refer to the inverter installation guide for further information on ground fault checks your installer will perform.