Stick to these seven tips—inspecting terminals, cleaning fans and vents, watching codes, guarding against weather, updating firmware, tracking data, and logging maintenance. Doing so extends the inverter's life, cuts failures, and boosts your solar investment's payoff. . A proactive approach is crucial for identifying and preventing technical issues that can lead to inverter failure. Neglecting regular maintenance can result in premature. . Creating a comprehensive preventative maintenance checklist for your PV solar system and inverters is essential to ensuring the longevity of your system and maximizing its return on investment. The logic is simple as follows: System performance drops when the components are not working correctly. Check and Tighten Connections, 6.