Issue: Envoy Displays Fewer Than Three Bars; Issue: Envoy Displays Zero Bars - enphase Envoy Installation And Operation Manual

Issue: Envoy Displays Fewer than Three Bars

Follow the previous procedure for "Issue: The Microinverter Count is Lower than the Number of Installed
Units".

Issue: Envoy Displays Zero Bars

The following conditions may exist.
Has a device scan been run while the array was active? The Envoy may have run a device scan
on power-up when 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 plugged into a good location? The Envoy needs to be plugged into an AC outlet
near the primary load center or the array's downstream subpanel.
 Make sure the Envoy is not plugged into an outlet strip or surge protector.
 Plug the Envoy into an outlet closer to the main load center or subpanel.
 Unplug other devices from the AC outlet used for the Envoy.
 As an alternative 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 outdoor weatherproof enclosure. Remember
that the Envoy must also have Ethernet access via the broadband router, either directly with a
CAT5 cable, Enphase wireless adapter, or via a power line communication bridge.
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.
The Envoy is plugged into a circuit on the primary load center, but 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. In this case, it is best to add an additional
5-Amp circuit breaker and then run an outlet off that subpanel. Plug the Envoy into that AC
outlet, so that it can be close to the PV circuit breaker.
30  2014 Enphase Energy Inc.
Envoy Installation and Operation
141-00011 Rev 05