Maintenance starts with monitoring
A sudden production drop, repeated inverter fault or battery communication alert can be more useful than a fixed cleaning schedule. Keep baseline screenshots or monthly production records so unusual changes are visible.
PV array
Look for obvious damage, persistent soiling, new shading, loose-looking components or roof issues from a safe location. Cleaning frequency depends on local dust, rainfall, roof pitch and access. Do not create a fall or electrical hazard for a small production gain.
Inverter and electrical equipment
Keep required ventilation clear, follow manufacturer service guidance and do not block cooling paths. Repeated high-temperature derating can indicate poor location or airflow.
Batteries
Review alarms, state-of-health information if available, temperature environment and enclosure condition. Firmware updates should follow manufacturer or qualified-installer guidance, especially where inverter-battery compatibility is involved.
Documentation
Keep service records, warranty documents, serial numbers and any configuration changes. This becomes particularly important if equipment is replaced or a warranty claim is made years later.