APsystems YC500A/I Installation/User Manual
20
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 60 minutes.
Flashing Red
- Not producing power.
Steady Red
- Electrode assembly ground fault protection.
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.