Microinverter And Pv Module Issues; Microinverter Leds; Startup Led Operation; Post-Startup Led Indications - enphase M250 Troubleshooting Manual

Microinverter and PV Module Issues

This section describes ways to isolate failures within
microinverters or PV modules using:


Microinverter LEDs


Power Production
Microinverter LEDs

Startup LED Operation

The status LED on the underside of each microinverter
lights green about six seconds after DC power is applied. It
remains lit solid for two minutes, followed by six green
blinks. After that, red blinks indicate that no grid is present if
the system is not yet energized.
Six short red blinks when DC power is first applied to the
microinverter indicate a failure during microinverter startup.
(On older models, including M190, M210, and D380, the LED is on the edge of the microinverter.)
LED color State
Green Solid Normal startup
Flashing Transition to post start up state
Red Flashing No grid present (AC breaker is not turned on)
Solid Failed microinverter start up

Post-Startup LED Indications

Use a handheld mirror to view indicator lights on the undersides of the microinverters. LED states are:
LED color State
Green Flashing Normal operation. The microinverter is receiving messages from the Envoy and
senses that the utility grid is within voltage/frequency specifications.
Orange Flashing Not receiving messages from the Envoy, but is otherwise operating normally.
The microinverter senses that the utility grid is within voltage/frequency
specifications. Troubleshoot as described in the following sections.
Red Flashing Failed to produce power and not operating normally. The microinverter does
not sense that the utility grid is within voltage/frequency specifications. The
microinverter cannot produce power until this is resolved. . Troubleshoot as
described in the following sections.
Solid
Fault requiring intervention.

27
Meaning
For M215-60-2LL-S22-IG, S23-IG, or S24-IG this indicates a "DC
Resistance Low – Power Off" fault. (continued on next page)
 2014 Enphase Energy Inc.
Troubleshooting an Enphase System
Meaning
LED on
underside
of micro-
inverter
August 2014