There are a few things that can cause solar panels to stop working. One possibility is that the panels have been damaged, perhaps by a hail storm or high winds. Another possibility is that there is dirt or debris blocking the sunlight from reaching the panels. And finally, it's also possible that there is something wrong with the wiring or connection between the panels and the inverter.

There are many reasons why solar panels may stop working. One common reason is that dirt and dust accumulate on the panels and inhibit their ability to convert sunlight into electricity. Another common reason is that a panel may be shaded by a tree or other object, blocking sunlight from reaching it. Other reasons for solar panels not working may include damage to the panel, wiring problems, or a malfunction in the inverter. If you are experiencing problems with your solar panels, it is best to consult with a professional to determine the cause and find a solution.