Installation Guide

On a normally ungrounded (floating) array, the ground fault protection system indicates a
fault when a short circuit or lower than normal resistance exists between the array and
ground. Before resetting the fault and attempting to restart the system, it is important to
have qualified service personnel, such as a certified electrician or technician, determine
the cause of the ground fault and effect repair.
To mitigate a ground fault in a normally ungrounded array:
1. Verify that the PV and battery disconnect switches are open and the charge controller
is de-energized.
2. Search or troubleshoot for a ground fault on the PV array (for example, a broken PV
panel or pinched PV wire).
3. Clear the fault and reset the system by removing and then reapplying both PV and
battery power.
Troubleshooting Conext MPPT 80 and MPPT 100 Installation Guide
990-91319 This document is for use by qualified personnel 54