YC500I Installation/User Manual
15
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 quick red light followed by three short green blinks when DC power
is first applied to the Microinverter indicates a successful Microinverter
startup.
Operation LED
Flashing Slow Green (10 sec. gap) - Producing power and communicating
with ECU
Flashing Fast Green (2 sec. gap) - Producing power and not
communicating with ECU over 60mins
Flashing Red - Not producing power
Steady Red - Electrode assembly ground fault protection
GFDI Error
A solid 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 red and the ECU will keep reporting
the fault.
After the ground fault error is fixed, follow the instructions in the ECU
Installation and Operation Manual to clear this GFDI error reporting.
Other Faults
All other faults are reported to the ECU. Refer to the ECU
Installation and Operation Manual for a list of additional faults
and 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.