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IQ Commercial Envoy Installation and Operation
Issue: No Microinverters are Reporting
Check for the following conditions.
Has a device scan been run while the array was active?
A device scan may have been run while the array was not connected to the grid or when the array was not powered by sunlight.
•
Run another scan during daylight hours.
•
Check that the circuit breaker(s) for the PV array are in the ON position. For the Envoy to communicate with the microinverters, the PV circuit breakers must be in the ON position in the electrical load center.
•
Verify that the PV modules are connected to the microinverters.
Is the Envoy well located?
The Envoy must be near the primary load center or the array's downstream subpanel.
•
If signal strength is poor, power the Envoy from the solar production circuit (where local electrical code allows for monitoring equipment on the same circuit). This provides the best possible power line communications. The Envoy must be located indoors (a garage, attic, basement, or other cool, dry location) or in an NRTL-certified, NEMA type 3R enclosure. Remember that the Envoy must also have an Internet connection.
Is the system energized?
PV modules power microinverters, PV modules provide power only during daylight hours, and microinverters communicate only when powered.
•
Run another scan during daylight hours.
•
Check that the circuit breaker(s) for the PV array are in the ON position. For the Envoy to communicate with the microinverters, the PV circuit breakers must be in the ON position in the electrical load center.
•
Verify that the PV modules are connected to the microinverters.
Is there a phase imbalance?
•
Ask the electrician to measure the conductors and neutral line to verify that the phases are balanced.
If the phases are not balanced, electricians must recheck the wiring.
Is the IQ Commercial Envoy wired to a circuit on the primary load center while the PV circuit breakers are on a downstream subpanel?
The primary load center is full and doesn’t have additional capacity to add circuit breakers.
•
Add a subpanel with a small subset of circuit breakers
•
Hard wire the IQ Commercial Envoy into that subpanel, so that it can be close to the PV circuit breaker.
Issue: Installer Toolkit Indicates that Scanning is Inhibited
It is best to leave the Envoy in this condition for normal operation. However, if you need to re-enable scanning (for example, if you replace a microinverter) contact Enphase Customer Support at enphase.com/en-us/support/contact .
Power Production Issues
Issue: Power Production LED is solid amber
The Power Production LED is solid green when all microinverters are producing, flashes green when a microinverter update is in progress, flashes amber when microinverters are not yet detected, or becomes solid amber when any microinverter that is expected to produce does not. Use Installer Toolkit to see which microinverters are affected.
•
If none of the microinverters are producing power, there may be a grid or wiring issue. First, verify that there is proper input voltage and frequency from the grid. Next, check the breaker and wiring starting at the load center.
35 © 2018 Enphase Energy Inc. 141-00041 Rev 01
IQ Commercial Envoy Installation and Operation
•
If all of the non-productive microinverters are on the same branch, check the breaker and wiring starting at the junction box for the affected branch.
•
If only one or scattered microinverters are not producing power, first check to see that the AC connectors are fully seated in the Engage Cable connectors. Next, check that each module is meeting the required start-up voltage for the microinverter (usually 22 V). A PV module that is failing or that is undersized may not generate enough power for AC conversion.
•
Microinverters will not report production if they are not communicating with the IQ Commercial
Envoy. Refer to “Device Detection Issues” on page 34 for troubleshooting steps.
Internet Connection Issues
To the Local Area Network (LAN), the Envoy is just another host on the network, much like a personal computer. Enphase offers technical support at enphase.com/en-us/support/contact for Envoy issues, but
Enphase's Support responsibility does not extend to the premises network or LAN.
The Envoy must obtain a DHCP (Dynamic Host Configuration Protocol) IP address and have a route to the
Internet. The Envoy will request this IP address from the broadband router during the power-up sequence.
Two small green LEDs on the Ethernet port indicate Internet link and activity. During the sequence, one LED will be solid green, and the other will blink every few seconds.
Issue: Network Communications LED is Amber or Off
The IQ Commercial Envoy is configured to perform a DHCP broadcast when it first boots up and requests an
IP address from a DHCP source. This source can be a server/computer, but almost all consumer-grade broadband routers also provide DHCP services. When the Network Communications LED is solid amber, the IQ Commercial Envoy has a local network connection only and failed to connect to Enlighten after its scheduled reporting time (five minutes). When the LED is off, there is no network connection.
If you are using the Enphase Mobile Connect modem and the Network Communications LED remains off or lights solid amber, see Troubleshooting in the
Enphase Mobile Connect Installation Guide.
For any connection method, you can troubleshoot network issues using the Installer Toolkit mobile app by tapping the
Network
button, then
Diagnostic Tools
.
•
Allow 10 minutes after initial installation. If the Envoy has recently received a valid IP address, the
LED will likely turn green momentarily.
•
Check network connectivity to the router or other DHCP server. You may also wish to contact your
Internet Service Provider or refer to your router documentation for help.
•
Check that you are using a broadband router and not a switch or a hub. Many hubs and switches cannot provide a DHCP lease and may not allow the Envoy to connect to the web.
•
Use the Installer Toolkit to Get New IP Address, and then allow 30 to 60 seconds for the Network
Communications LED to turn solid green.
•
When the IQ Commercial Envoy is connected to the LAN via Ethernet cable, two small LEDs on the
Ethernet port indicate Internet link and activity. One LED will be solid green, and the other will blink green or yellow every few seconds. If either LED is neither on nor blinking, try using a new Ethernet
(CAT5) cable in place of the existing cable.
•
Power down all units in the chain, applying power again in this order: 1) modem, 2) router, and 3)
Envoy. Allow a few minutes for the IP address to be reassigned.
•
If you replace the broadband router, configure the Envoy Wi-Fi settings for the new wireless network name (SSID) and password.
Issue: Wi-Fi Problems
If the Network Communications LED remains off:
•
If the Envoy is installed in an enclosure, is the enclosure metallic? Metal enclosures may impede wireless communication.
36 © 2018 Enphase Energy Inc. 141-00041 Rev 01
IQ Commercial Envoy Installation and Operation
•
Stucco and plaster wall construction may contain metal mesh, which can affect wireless range. If you cannot see your router or access point in the list on the Envoy, or cannot maintain a connection, relocate the Envoy to be closer to your router or access point.
•
The WPS connection window may have timed out. Retry the connection steps.
•
Make sure that the broadband router is operational by checking that other devices at the site can access the network.
•
If you cannot see your router or access point in the list on the Envoy, or cannot maintain a connection, it may be necessary to add a wireless repeater to extend the network range.
If the Network Communications LED lights solid amber:
•
Power down all units in the chain, applying power again in this order: 1) broadband modem, 2) router or Wi-Fi base station, and 3) Envoy.
•
Make sure that the broadband router is connected to the Internet by checking that other devices at the site can access the Internet. If the other devices are not connected to the Internet, contact your
ISP for assistance.
Issue: Cellular Modem Connection Status
“Not Connected”
If the IQ Commercial Envoy uses an Enphase Mobile Connect, the IQ Commercial Envoy Network
Communications LED is solid amber for longer than 12 hours, and the Installer Toolkit displays a Connection
Status of
Not Connected
:
•
Unplug the modem USB cable.
•
Power cycle the IQ Commercial Envoy and wait until IQ Commercial Envoy completely restarts.
•
Re-connect the cellular modem USB cable.
•
Allow two minutes between any extraction and insertion of the modem cable in the USB port of the cellular modem.
Issue: IQ Commercial Envoy is not Connecting with a New Router
If you replace the broadband router at the installation, you need to update the connection information on the
IQ Commercial Envoy. To do this:
•
Connect to the IQ Commercial Envoy local interface as described on page 29.
•
Select
Wi-Fi
.
•
Select
Connect Other Network
.
•
Enter the new
Wireless Network Name (ESSID)
and
Security
code.
37 © 2018 Enphase Energy Inc. 141-00041 Rev 01
IQ Commercial Envoy Installation and Operation
Local Networking Considerations
DHCP versus Static IP Addressing
If the site owner prefers not to use DHCP, you can set up the Envoy to use a static IP address. Use the
Installer Toolkit to configure the static IP. Refer to enphase.com/installer-toolkit/ for more information on the
Enphase Installer Toolkit.
•
Tap the
Network Connectivity
menu item. This allows you to see if the Envoy is using DHCP or
Static-IP, and it allows you to change this setting if needed.
•
Tap
Check Network Connectivity
to view the Envoy connections.
WARNING
: Do not change the Envoy DHCP setting to use a static IP address unless you also reserve the same IP address on the broadband router. See the section on DHCP reservations in the router instructions. Failure to reserve the static IP address on the router may result in duplicate IP addresses and intermittent Internet connection problems with the
IQ Commercial Envoy.
MAC Filtering
Check to see if Media Access Control (MAC) filtering is in use at the site. An example of a MAC address would be: 00:17:F2:D6:B1:45
•
MAC addresses contain six pairs of characters, including any number 0-9 and letters A-F.
•
The MAC address of the Envoy will begin with 00:D0:69
If MAC filtering is in use at the site, identify the specific MAC address of the Envoy and add it to list of authorized devices on the router. The MAC addresses (wired and wireless) are located on a label on the back of the Envoy.
Firewall Settings
The Envoy initiates
outbound
connections to Internet servers. Such connections may be restricted by firewall rules set up on the site’s broadband router. Broadband routers typically allow all outbound connections but restrict any/all inbound connections.
If outbound firewall rules are applied at the site, you must configure a static IP address for the Envoy and add new rules that allow outbound access as follows:
Direction Source Protocol Port Destination
OUT
OUT
<Envoy IP address>
<Envoy IP address>
TCP
UDP
80, 443
80 reports.enphaseenergy.com ping-udp.enphaseenergy.com
OUT <Envoy IP address> TCP 80, 443 home.enphaseenergy.com
The Envoy connects to these servers using their DNS names. If you add firewall rules for Envoy reporting,
Enphase recommends using the DNS names rather than the underlying IP addresses. This is because the IP addresses are subject to change without notice.
38 © 2018 Enphase Energy Inc. 141-00041 Rev 01
IQ Commercial Envoy Installation and Operation
Microinverter Issues
Clear
“DC Resistance Low - Power Off” Condition
A solid red status LED on the microinverter indicates this condition. The LED will remain red and the fault will continue to be reported by the Envoy until the error has been cleared.
An insulation resistance (IR) sensor in the microinverter measures the resistance between the positive and negative PV inputs to ground. If either resistance drops below a threshold, the microinverter stops power production and raises this condition. This may indicate defective module insulation, defective wiring or connectors, moisture ingress, etc. Although the cause may be temporary, this microinverter condition persists until the sensor is manually reset.
If a microinverter registers a
DC Resistance Low - Power Off
condition, you can attempt to clear this condition. An Envoy is required to send the clear-dc-resistance-low message to clear the condition. If the condition does not clear after you perform the following procedure, contact Enphase Energy customer support at enphase.com/en-us/support/contact .
There are two ways to send a clear message to the microinverter. Note that the condition will not clear after sensor reset if the cause of the failure is still present.
If the condition persists, contact your installer or contact
Enphase Energy customer support at enphase.com/en-us/support/contact
.
Method 1: Clear this error through Enlighten
•
Access the System in Enlighten.
•
Click the
Events
tab. The next screen shows that there is a current
DC Resistance Low - Power
Off
condition for the system.
•
Click
DC Resistance Low - Power Off
.
•
Where “n” is the number of affected devices, click
n devices (show details).
•
Click the serial number of the affected microinverter.
•
Click the
Reset DC Resistance Low - Power Off Sensor
button.
The system displays, “A DC Resistance Low- Power Off reset task was issued on 08/03/2015 01:34
PM CDT for this microinverter and is still pending.”
39 © 2018 Enphase Energy Inc. 141-00041 Rev 01
IQ Commercial Envoy Installation and Operation
Method 2: Send the
clear
message using Installer Toolkit
On the list of detected microinverters, a green dot or red square appears to the left of each microinverter serial number. A green dot indicates Status OK. A red square indicates an event for that microinverter.
•
Tap the to the left of the serial number to view details for a microinverter event.
•
If the microinverter status shows that there is an active
DC Resistance Low – Power Off
condition, tap the to send the clear message to the affected microinverter.
The app then indicates that a clear message was sent.
40 © 2018 Enphase Energy Inc. 141-00041 Rev 01
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