Lcd Shows A Non-Routable/Self-Assigned Ip Address And Shows "-Web; Lcd Shows A Non-Routable/Self-Assigned Ip Address And Also Shows "-Web - enphase M250 Troubleshooting Manual

LCD shows a non-routable/self-assigned IP address AND shows "-Web"

The Envoy has no connection to the Enlighten software platform. If the Envoy shows a self-assigned IP
(169.254.120.1) and "-Web", either a physical Ethernet connectivity issue is preventing it from obtaining a
DHCP-issued IP address, or there is a setup problem.
What is DHCP?
During the power-up sequence, the Envoy requests a DHCP-issued IP address from the
broadband router. The router obtains an address from a pool of available IP addresses from a
Dynamic Host Configuration Protocol (DHCP) server. The DHCP server 'leases' an IP address to
each device in the Local Area Network (LAN). The Envoy, like other computers in the LAN, uses
the DHCP IP address as the path to the Internet.
Troubleshoot as follows.
1. Verify the Envoy connection to the router.
a. Verify connection. The Envoy requires connection to a router, with the CAT5 cable that came
with the Envoy or by installing an Enphase Wireless Adapter (order WF-01 separately).
b. Verify that the Envoy is connected to a broadband router. A switch or hub cannot be
substituted for the router.
i. Determine the make and model of the router. This will help you discover if it is a true
router, rather than a hub or switch.
ii. A switch or hub placed between the modem and the ISP connection may also cause
this problem.
c. Check that the Local Area Network (LAN) port LED is lit. The LED is on the rear of Envoy
next to the LAN port., is the Envoy network port light lit? If so, the Envoy is waiting for a
response from Enlighten, and will show "+Web" soon. If not, reseat connections or try another
CAT5 cable.
2. Did the Envoy previously have an Internet connection at this site?
a. If so, what has changed? Is it a new router or ISP? Was there a power outage?
b. If yes to any of these, remove power from all units in the chain, then apply power again in this
order: Cable/DSL Modem, Router, and Envoy.
c. If the router was replaced,
make sure the new device
is actually a router, not a
hub or a switch.
d. Look up the site in
Enlighten. According to
the graph, when did this
Envoy last report (last
date/time shown in the
energy production graph)?
What changed at that
point in time?
e. Try using the Envoy menu
button to "Get New IP
address." Press and hold
15
 2014 Enphase Energy Inc.
Troubleshooting an Enphase System
August 2014