Technical data

Envoy Installation and Operation

Troubleshooting

The following sections describe possible problems and solutions. For information on system status

and event messages, see “Event Messages” on page 38.

For more extensive Troubleshooting information, refer to the manual, Troubleshooting an Enphase

Installation at

http://www.enphaseenergy.com/support/downloads.

Power Line Communication Troubleshooting

At power-up, the Envoy performs a “Communication

Check”. After a few minutes, it will display a number

of bars in the LCD screen. This value, from 0 to 5,

indicates the signal strength of the power line

communication between the Envoy and the

microinverters. A number from 3-5 is good. A number

of 1-2 is not ideal. Zero bars means that either the Envoy needs to be relocated, or there are one or

more electrical appliances causing interference. Troubleshoot power line communication issues as

follows.

PROBLEM: The microinverter count doesn’t match number of installed units. This may indicate that

the Envoy is not done scanning/discovering the entire array. Alternatively, it may indicate that the

Envoy is having difficulty communicating over the power lines. It could also be a result of low light

levels and the PV module voltage being too low for the microinverter to power up.

• Make sure that the Envoy is plugged directly into the wall and not into a power strip or

surge protector.

• Relocate your Envoy as close to the electrical service-panel (load-center) as possible. This

ensures that the Envoy receives the strongest possible signal from each microinverter.

• Try unplugging any other device that may be sharing the outlet with the Envoy. Or, as

an alternative, plug the Envoy into a circuit that supports fewer electronic appliances.

Appliances sharing a receptacle with the Envoy may interfere with power line

communication.

• If this problem occurs when light levels are low, try again during daylight hours.

PROBLEM: Envoy displays fewer than three bars. Follow the previous procedure.

PROBLEM: Envoy displays zero bars. The following conditions may exist.

Is there a phase-imbalance?

• Ask the electrician to measure the conductors and neutral line to verify that the phases

are balanced. In cases where the phases are not balanced, electricians must recheck

their work.

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