Installation/User
Manual
13
Troubleshooting
Qualified
personnel
can
use
the
following
troubleshooting
steps
if
the
PV
system
does
not
operate
correctly:
Status
Indications
and
Error
Reporting
Start
up
LED
One
minute after DC power is first applied to the microinverter,one short red
blinks indicate a successful microinverter startup sequence,be equal or greater
than two short red blinks after DC power is first applied to the microinverter
indicate a failure during microinverter setup.
Operation
LED
Flashing
Slow
Blue
-
Producing
small
power
Flashing
Fast
Blue
-
Producing
big
power
Flashing
Red
-
Not
producing
power
Red blinking two times-AC low-voltage or high-voltage
Red blinking three times-Grid Malfunction
GFDI
Error
A
four
time
red
LED
indicates
the
Microinverter
has
detected
a
Ground
Fault
Detector
Interrupter
(GFDI)
error
in
the
PV
system.
Unless
the
GFDI
error
has
been
cleared,
the
LED
will
remain
four
times blinking.
Other
Faults
All
other
faults
are
reported
to
the
ECD.
Refer
to
the
ECD
Installation
and
Operation
Manual
for
a
list
of
additional
faultsand
troubleshooting
procedures.
WARNING:
Only qualified personnel should directly handle the
APsystems microinverter.
WARNING:
Never disconnect the DC wire connectors under
load. Ensure that no current is flowing in the DC wires prior to
disconnecting. An opaque covering may be used to cover the
module prior to disconnecting the module.
WARNING:
Always disconnect AC power before disconnecting
the PV module wires from the APsystems microinverter. Either
disconnecting by the appropriate AC circuit breaker or unplugging
the first AC connector of the first Microinverter in a branch circuit
is suitable as a means of disconnection.
WARNING:
The APsystems microinverter is powered by PV module
DC power. AFTER disconnecting the DC power, when reconnecting
the PV modules tothe Microinverter, be sure to watch for the three
short LED flashes.
