Solar Power Systems: Once a fortnight check the inverter LED operating status. At three months check the solar panel array for shading, as surrounding trees will have grown & could be affecting your panels. Check your electricity bill to ensure you are being credited for energy generated by your solar power system.
For full maintenance details please review Solar Power System Maintenance
Solar Hot Water: Your systems are designed so that there is little to do regarding system maintenance. Personally inspecting or servicing the system is not recommended. A complete system service is recommended every 3- 5 years depending on the individual manufacturers recommendations and the area you live in.
For full maintenance details please review Solar Hot Water Maintenance