In situations where your panels don’t produce any power, PV modules themselves are rarely at fault. Reliable manufacturers test every module before shipping. Even if the module was damaged during transportation, its performance may decrease, but the ability to produce electricity shouldn’t disappear completely. That is why under no circumstances should you try to dismantle a solar panel to see what’s inside – you’ll just end up with a broken module.
The most problematic place is usually the connectors. Make sure they are fixed tightly following the instructions in the installation manual. Also check if the positive terminal of the panel goes to the positive one of the inverter and so on. If you can’t figure out the problem, invite a certified electrician to take a look at your system.
If your solar panels are already installed, but the performance starts to decrease, the simplest thing you can do is to wash them
. It’s a lot like washing windows – just don’t use soap and try not to scratch the surface of your panels. Regular cleanup, as well as visual inspections and checkups by an electrician are recommended to prolong the lifespan of your system.