GFDI error
A quadruple red LED indicates that the microinverter has detected a ground
fault device interrupt (GFDI) error in the photovoltaic system.
Unless the GFDI error is corrected, the LED will flash four times
Other Faults
All other faults are reported to the ECD. A list of additional faults and
troubleshooting procedures can be found in the in the ECD installation and
operation manual.
WARNING:
Never disconnect DC wire connectors under load. Make sure that no
current is flowing in the DC leads before disconnecting. An opaque cover can be
used to cover the module before disconnecting the module.
Troubleshooting a non-functioning microinverter
There are two possible general problems:
a) The microinverter itself may be having problems
b) The microinverter itself is working fine, but has ECD communication pro-
blems. The following items address microinverter problems, not communication
problems (addressed in the ECD manual)
A quick way to determine if it is a microinverter or ECD communication
problem:
1. diagnosis from the microinverter side: Red light - either flashing or continuous
light on the microinverter, or no light at all.
No light or red light means there is definitely a problem with the microinverter.
Diagnosing the microinverter trouble
a) No data display: This is probably a communication problem and not a micro-
inverter problem.
b) Problems with erroneous display: Data is displayed for some time and then
no data is displayed: most likely a communication problem.
c) 0 watts or 2 watts: Likely a microinverter problem
d) Incorrect data display that is not coordinated with data displayed from other
devices: most likely a microinverter problem
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