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5. Check the DC connections between the microinverter and the PV module.
6. Verify the PV module DC voltage is within the allowable range shown in appendix "Technical
Data" of this manual.
7. If the problem persists, please call Aptos customer support.
Warning
Do not try to repair the microinverter. If the troubleshooting fails, please return it to the factory for replacement.
6.4 Routine Maintenance
1. Only authorized personnel are allowed to carry out the maintenance operations and are responsible
to report any anomalies.
2. Always use the personal protective equipment provided by the employer when carrying out
the maintenance operation.
3. During normal operation, check that the environmental and logistic conditions are correct. Make sure
that the conditions have not changed over time and that the equipment is not exposed to adverse
weather conditions and has not been covered with foreign bodies.
4. DO NOT use the equipment if any problems are found, restore the normal conditions after the fault
is removed.
5. Conduct an annual inspection on various components and clean the equipment with a vacuum
cleaner or special brushes.
Do not attempt to dismantle the Microinverter or make any internal repairs! In order to preserve the
integrity of safety and insulation, the Microinverters are not designed to allow internal repairs!
The AC output wiring harness (AC drop cable on the Microinverter cannot be replaced. If the cord is
damaged, then the equipment should be properly disposed.
Unless otherwise indicated, maintenance operations must be carried out with the equipment
disconnected from the grid (power switch open and the photovoltaic modules obscured or isolated.
For cleaning, do not use rags made of filamentary material or corrosive products that may
corrode parts of the equipment or generate electrostatic charges.
Avoid temporary repairs. All repairs should be carried out using only genuine spare parts.
Each branch should provide a circuit breaker, but no need for central protection unit.
© 2021 Aptos Solar Technology, LLC. All rights reserved.
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