Often, the controller will shut down to avoid damage. This could be because of a problem with the solar panel or because the controller’s maximum voltage limit is set too low. If your controller turns off frequently, you should measure the solar panel’s output voltage. The voltage should stay within 18 to 22 volts.
One of the most common problems with flexible solar panels is that sometimes the battery they’re connected to can run low. This mostly happens when the panel is used for a long time without any sunlight exposure. The battery voltage drops and can't power the load anymore. Therefore, the controller switches off automatically to prevent damage.
If your controller turns off frequently, you should measure the solar panel’s output voltage. The voltage should stay within 18 to 22 volts. If it’s higher, that’s likely causing the trouble. The solution is to either replace the solar panel with one that has an appropriate voltage output or use a charge controller that can handle higher voltages.
When the solar panel produces more current than the charge controller’s capacity, it’s not exactly harmful, but it isn’t ideal either. This occurs if you connect a strong solar panel to a charge controller that isn’t rated for that much power. In such scenarios, the current output from the panel exceeds what the controller can manage.
The main culprit is usually a solar panel with a high output voltage. When the output voltage of the solar panel is more than the maximum voltage limit of the controller, it can cause all sorts of problems. The most common one is that the controller will switch off automatically to prevent damage.
Reset the Controller: Sometimes, simply resetting the controller can resolve the issue. Disconnect the controller from both the battery and the solar panels, wait a few minutes, then reconnect, starting with the battery first and then the solar panels. 3.
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