Troubleshooting a non-operating Smart Microinverter
1. System halted and /or without power output
a) Check if switch of Smart Microinverter is turn on or not,
b) Check if the DC connections to Smart Microinverter are correct or
not,
c) Check if any reverse DC connections for positive or negative or not,
d) Check if DC input voltage is within the range of the Smart
Microinverter’s or not,
e) Check if the utility grid voltage and frequency are fit in with the
serviceable range of Smart Microinverter or not,
f) Check if fuses of DC side are fusing or not,
g) Check if utility grid voltage properly connecting to Smart
Microinverters or not.
2.DC power supply is normal but no power output:
a) Check if utility grid voltage is connecting to Smart Microinverter or
not,
b) Check if utility grid voltage is fit in with the serviceable range of
Smart Microinverter or not,
c) Please visual inspection for the LED operation status, red LED will
turn off and green LED will flash or run when inverter connecting
with DC power supply which input voltage is fit in with the range
as specified and power grid properly. If still no power output when
green LED flash or run, probably internal components are
damaged, in such case, please turn the defective inverter back for
further analyze,
d) Please visual inspection for the LED operation status, red LED still
turn on and green LED without any flash or run when inverter
connecting with DC power supply which input voltage is fit in with
the range as specified and power grid properly, probably internal
components are damaged, in such case, please turn the defective
inverter back for further analyze.
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