Troubleshooting an Enphase System
2014 Enphase Energy Inc. August 2014
ACVOOR (AC Voltage Out of Range)
The microinverter reports that the AC voltage coming from the utility is either too low or too high as
specified by UL standards (UL1741). Acceptable ranges for AC service are shown in the table below:
An ACVOOR condition should correct itself, as there are often periodic variations in Utility voltage. If the
condition persists, troubleshoot as follows.
ACVOOR in an entire branch or multiple branches
Checks:
1. Measure voltages for L-L and L-N for all phase conductors at the service entrance (PCC), at each
Enphase branch circuit breaker, at each Enphase branch circuit junction box, at each Enphase
branch circuit AC pigtail (if used in this installation), and at the last microinverter of each Enphase
branch circuit.
To Next Page
Loading...
Need help?
General
