enphase M250 Troubleshooting Guide

Troubleshooting an Enphase System
 2014 Enphase Energy Inc. August 2014
11
Envoy and Communications Issues
The following sections describe possible problems and
solutions. Areas include:
 Envoy Issues
 Networking and Internet Issues
 Power Line Communication Issues between
the Envoy & Microinverters
WARNING: Do not attempt to repair the
Enphase Envoy; it contains no user-
serviceable parts. Tampering with or
opening the Envoy will void the warranty. If
the Envoy fails, contact Enphase customer
service to obtain an RMA (return
merchandise authorization) number and
start the replacement process.
Envoy Issues
A physical Ethernet connection is not
practical at the site
The location for the Envoy yields a good signal-
strength between the Envoy and the Microinverters
(over the power lines), but it is remote from the
router. An Ethernet cable from the broadband router
to this spot is not practical.
Try these solutions:
 Use an Enphase Wireless Adapter (order
WF-01) as shown.
 Use Enphase power line communication
bridges (order ELPC-01) with the Envoy as
shown.
 Or, you can use a third-party wireless
Ethernet bridge (available at computer
stores).
Broadband
Router
Envoy
Power line
communication
bridges
Wireless
Router
Envoy
Wireless
Adapter

enphase M250 Specifications

General

Model	M250
Manufacturer	Enphase Energy
Efficiency	96.5%
Output Voltage	240 V
Operating Temperature Range	-40°C to +65°C
Maximum Output Current	1.04 A
CEC Efficiency	96.0%
Start-up Voltage	22 V
Output Frequency	60 Hz
Enclosure Rating	IP67
Weight	1.6 kg