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Summary of Contents for enphase Microinverter System
- Page 1 Reference Manual Troubleshooting an Enphase Microinverter System...
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Page 2: Table Of Contents
Contents Enlighten Messages and Alerts 4 ACFOOR (AC Frequency Out of Range) ACVOOR (AC Voltage Out of Range) Critical Temperature DC Too Low DC Too High Envoy/EMU not Reporting 9 Gateway Failure 9 GFDI / GFI trip Grid Gone Module Failed to Report Over Temperature Zigbee Device Failed to Report Zigbee USB Stick Removed... - Page 3 How to identify an interfering load 20 This is a Line-side Tap (or Supply-Side, or PLC) Installation When do I need an additional Envoy? How to get further training on Enphase power line communication Microinverter / PV Module Issues Microinverter LEDs and What they Mean...
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Page 4: Enlighten Messages And Alerts
Along with ACFOOR events, Grid Gone events may also be occur- protect utility line workers ring. This is an indication of Anti-Islanding, which sometimes and loads. goes hand-in-hand with ACVOOR (AC Voltage Out of Range) ACFOOR. Copyright © Enphase Energy, Inc. 2011 06/15/2011... -
Page 5: Acvoor (Ac Voltage Out Of Range)
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 micro- inverter of each Enphase branch circuit. - Page 6 4. Verify that the service entrance power is not coming from a 240 Vac “DELTA” or 240 Vac “STINGER” secondary transformer. 5. Make sure that the site does not have undersized conductors, either to the Enphase branch circuit or between the primary load center and the subpanel (if a subpanel exists).
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Page 7: Critical Temperature
If all of the above have been checked and verified, and ACVOOR nuisance tripping is still occurring, and neither the installer nor the utility can mitigate, Enphase can up- grade all of the microinverters to a parameter table which allows for slightly expanded trip-points, while still remaining within spec. -
Page 8: Dc Too Low
If the microinverter is having DC Too Low events during daylight hours, it may have been paired with an incompatible PV module. Is the PV module on the Enphase Compat- ibility list? If the PV module is not compatible it may work sometimes, but will not work consistently or effectively. -
Page 9: Envoy/Emu Not Reporting
Envoy/EMU not Reporting The broadband Internet connection that the Enphase Envoy uses to communicate to the Enlighten servers is experiencing a problem. If the Envoy displays a status of –Web in the LCD window, it is not currently communicating with the Enlighten servers. The Internet service may be down or the router may be un- plugged or turned off. -
Page 10: Grid Gone
In most cases no action is required. Solar production will resume when conditions normalize. Enphase microinverters are utility interactive and require a connection to the utility. What is a “Utility Interactive” inverter? •... -
Page 11: Module Failed To Report
• If the Enphase Envoy was recently relocated or if new devices or appliances were added to the circuit, it is possible that the new situation is not suitable for power line commu- nications. -
Page 12: Envoy And Communications Issues
LCD displays “Reset Clock” If the Envoy has a current Internet connection, let it use this connection to retrieve an upgrade from Enphase. This may take up to 90 minutes, depending upon the speed of the connection. You may need to call Enphase Customer Support to initiate the upgrade. -
Page 13: Internet Problems (Local Area Networking)
Internet Problems (Local Area Networking) The Enphase ENVOY operates just as another computer would in the premises. As such, many of the troubleshooting steps for the Envoy are the same as troubleshooting steps for additional computers in the house. LCD shows a non-routable/self-assigned IP address and also shows “-Web”... -
Page 14: Lcd Periodically Shows "-Web" For Minutes Or Hours At A Time
3. If power line communication bridges (from Enphase) are being used, check that all three LEDs are either on or blinking as described in “Are My Power Line Communication Bridges Working?” a. Relocate one of the bridges to a different power outlet, and make sure that neither one is in a power-strip or UPS battery-backup device. -
Page 15: Lcd Shows A Good Ip, But Also Shows "-Web
Internet con- nectivity option for the site. Air cards are also called EVDO or CDMA cards and typically provided by Sprint, Verizon or AT&T. There are two ways to use an air card: Copyright © Enphase Energy, Inc. 2011 06/15/2011... -
Page 16: Can I Use A Dial Up Internet Connection With The Envoy
Can I use a dial up Internet connection with the Envoy? Dial-up Internet connections do not allow consistent communication between the Envoy and Enphase. As such, Enphase Energy does not recommend or support dial‐up connections. Are My Power Line Communication Bridges Working? Use the status lights to verify connections. -
Page 17: The Envoy Is Using A Static Ip And Cannot Get A Web Connection
Communication Issues between Envoy & Microinverters (Power Line Communication) Built into each Enphase microinverter is a sophisticated protocol that uses the power lines at the site for communication with the Envoy. Every load in the house or business (televisions, lights, dishwasher, outlets, light switches, etc.) shares this common collection of power lines and circuits, all of which terminate at the load center. -
Page 18: Inverters Are Not Detected / Power Line Communication Level Is Low/Poor
CFLs (Compact florescent lights) with failed ballasts, anywhere in the home electronic pest deterrents GFI outlets some brands of arc-fault protected outlets (arc-fault breaker) • Try unplugging any other device that may be sharing the outlet with the Envoy. Copyright © Enphase Energy, Inc. 2011 06/15/2011... - Page 19 • Try to determine the source of the interfering load by isolating the Enphase signal from other systems. The Enphase system transmits at 144kHz, and adequately fil- ters X10 and other signals, but we have found that not all other systems adequately filter the Enphase signal.
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Page 20: How To Identify An Interfering Load
Using this method, you should be able to find out which circuit has the interfering load. You can then look at the individual loads on that circuit to see if you can see which device is causing the interference. Copyright © Enphase Energy, Inc. 2011 06/15/2011... -
Page 21: This Is A Line-Side Tap (Or Supply-Side, Or Plc) Installation
Envoy on an outlet off the PV subpanel where you land the circuit breakers, prior to the utility tie-in. Try plugging the Envoy in near the elec- trical service center, as this may suffice. Copyright © Enphase Energy, Inc. 2011 06/15/2011... -
Page 22: When Do I Need An Additional Envoy
How to get further training on Enphase power line communication For further training on Enphase power line communication, please attend the free, one-hour training webinar on this topic. You’ll see it listed at enphasetraining.webex.com. Copyright © Enphase Energy, Inc. 2011... -
Page 23: Microinverter / Pv Module Issues
Microinverter / PV Module Issues This section provide a means of isolating fail- ures within microinverters or PV modules. The Enphase microinverter system provides unprecedented access to the performance data of individual PV modules and microin- verters. This access enables rapid visibility to system issues and helps to expedite the troubleshooting process. -
Page 24: The Microinverter Leds Are Blinking Orange
Tyco connectors will mate but reverse polarity. Refer to the microinverter product manual to make sure that the appropriate lead from the PV module is connected to the appropriate DC lead on the microinverter. Copyright © Enphase Energy, Inc. 2011 06/15/2011... -
Page 25: Power Production
Why is one unit showing 0W production when adjacent units are productive? This means the inverter is communicating, but not producing. A unit that is communicating, but not productive, may be experiencing a DC side failure. Copyright © Enphase Energy, Inc. 2011 06/15/2011... - Page 26 The measured DC volt- age after 6/21/10 was too low to power on the microinverter for energy harvest. It does not meet the required voltage to start up the microinverter. Start up voltage re- quirements are: Copyright © Enphase Energy, Inc. 2011 06/15/2011...
- Page 27 Sometimes a microinverter will report 0 DC voltage. In this case, measuring the open circuit voltage of the PV module will help identify a PV module that has failed. If the problem does not appear to be with the PV module, Enphase Energy Customer Sup- port will assist you in further diagnosing the issue.
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Page 28: My Panels Are Dark In Enlighten And No Production Value Is Displayed
System Energy Production (enter a date range) – use this report to generate a report for any date range you choose b. System Recent Power Production (returns data for last week) c. Per Module One Day Energy Production (enter a date) Copyright © Enphase Energy, Inc. 2011 06/15/2011... -
Page 29: Use The Graph Widget To View Production History
There is an event or alert message on the system There may be an event or alert associated with one, several or all of the devices in your system. If so, see Enlighten Messages and Alerts. Copyright © Enphase Energy, Inc. 2011 06/15/2011...
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