YC500A/I Installation/User Manual
Important Safety Instructions
This manual contains important instructions to follow during installation and maintenance of
the APsystems Photovoltaic Grid-connected Inverter (Microinverter). To reduce the risk of
electrical shock and ensure the safe installation and operation of the APsystems Microinverter,
the following symbols appear throughout this document to indicate dangerous conditions and
important safety instructions.
SAVE THESE INSTRUCTIONS! This manual contains important instructions for models
YC500A/YC500I that must be followed during Installation and maintenance of the
Photovoltaic Grid-connected Inverter.
Specifications subject to change without notice - please ensure you are using the most recent
update found at www.APsystems.com
WARNING: This indicates a situation where failure to follow instructions may
cause a serious hardware failure or personnel danger if not applied appropriately.
Use extreme caution when performing this task.
NOTE: This indicates information that is important for optimized
Microinverter operation. Follow these instructions closely.
Safety Instructions
Do NOT disconnect the PV module from the APsystems Microinverter without first
disconnecting the AC power.
Only qualified professionals should install and/or replace APsystems Microinverters.
Perform all electrical installations in accordance with local electrical codes.
Before installing or using the APsystems Microinverter, please read all instructions and
cautionary markings in the technical documents and on the APsystems Microinverter
system and the solar-array.
Be aware that the body of the APsystems Microinverter is the heat sink and can reach a
temperature of 80°C. To reduce risk of burns, do not touch the body of the Microinverter.
Do NOT attempt to repair the APsystems Microinverter. If it fails, contactAPsystems
Customer Support (206-855-5100) to obtain an RMA number and start the replacement
process. Damaging or opening the APsystems Microinverter will void the warranty.
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