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Troubleshooting an Enphase System
Installer's Guide to Troubleshooting
an Enphase System
 2014 Enphase Energy Inc.
1
August 2014

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Summarization of Contents

Critical Safety Information
Product Labels and Safety Symbols
Explanation of symbols found on product labels and within the manual.
General Installation Safety
Essential safety instructions for installers working with Enphase systems.
Microinverter and Accessory Safety
Specific safety directives for microinverters, cables, and accessories.
System Overview and Architecture
Envoy Communications Gateway Function
Details the role of the Envoy gateway in system communication and data logging.
Enphase Monitoring and Analysis Platform
Introduction to the Enlighten platform for performance monitoring and analysis.
Envoy and Network Connectivity Troubleshooting
Envoy Connection and Wireless Issues
Troubleshooting physical and wireless connection problems for the Envoy.
Internet and Wi-Fi Configuration
Steps for setting up Wi-Fi and resolving internet access issues.
Power Line Communication Diagnostics
Methods to diagnose and improve power line communication signal strength.
Microinverter and PV Module Performance Issues
Microinverter LED Status and Faults
Interpreting microinverter LED indicators for operational status and errors.
Troubleshooting Power Production Problems
Diagnosing causes of low or zero power output from microinverters.
PV Module Voltage and DC Connection Checks
Verifying PV module DC voltage and connection integrity for optimal function.
System Event Messages and Alerts
AC Frequency Out of Range (ACFOOR)
Diagnosing and resolving issues related to abnormal AC frequency.
AC Voltage Out of Range (ACVOOR)
Troubleshooting problems caused by AC voltage outside the specified range.
DC Resistance Low and Ground Faults
Addressing DC resistance faults and ground fault interrupter (GFI) trip conditions.
Installation Best Practices and System Care
Recommended Installation Sequence
A step-by-step guide to best practices for system installation.
Solar Array Maintenance and Cleaning
Guidance on the proper care, cleaning, and visual inspection of solar arrays.
System Power During Grid Outages
Explanation of how grid-tied systems behave during power outages and safety protocols.

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