Troubleshooting Topics - enphase M250 Troubleshooting Manual

Troubleshooting Topics

Use the following table to find information on a problem by category.
Topic
Production issues
ACFOOR (AC Frequency Out of Range)
ACVOOR (AC Voltage Out of Range)
When an entire branch or multiple branches are impacted
When only a few microinverters are impacted
Critical Temperature
DC Too Low
DC Too High
Device Produced No Power
GFI tripped
DC Resistance Low - Power Off
Grid Gone
Over Temperature
The unit under review shows low production.
Why is one unit showing 0W production when adjacent units are productive?
Notes on Open Circuit Voltage
Other Things to Check
Envoy not reporting
Envoy not Reporting
Gateway Failure
LCD displays "Envoy Failure"
LCD periodically shows "-Web" for minutes or hours at a time.
LCD shows a good IP, but also shows "-Web"
LCD shows a non-routable/self-assigned IP address and also shows "-Web"
The Envoy cannot get a "+Web" even though all premises networking is intact
The Envoy is using a static IP and cannot get a web connection
Microinverter not reporting
Microinverters are not detected / Power line communication level is low/poor
Microinverter Failed to Report
My panels are dark in Enlighten and no production value is displayed
General
A physical Ethernet connection is not practical at this site
Are my power line communication bridges working?
Can I use a dial-up Internet connection with the Envoy?
Enlighten will not allow me to select the panel
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 2014 Enphase Energy Inc.
Troubleshooting an Enphase System
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August 2014