Troubleshooting; Power Line Communication Troubleshooting - Enphase Energy Envoy Manuel D'installation

Troubleshooting

The following sections describe possible problems and solutions. For information on
system status and event messages, see Event Messages on page 39.
For more extensive Troubleshooting information, refer to the manual,
Troubleshooting an Enphase Installation at
http://www.enphase.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 electronic appliances causing
interference. Troubleshoot power line communication issues as described in the
following.
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 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 procedure above.
PROBLEM: Envoy displays zero bars. The following conditions may exist.
1. 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.
2. Is the system energized? PV modules power Microinverters, PV modules
provide power only during daylight hours, and microinverters communicate only
when powered.
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