How do I know if my solar controller isworking? This is a concern of many users, which can be analyzed in thefollowing three steps:

       1. Check whether the indicator light of thesolar controller is on normally. If the indicator light is abnormal, check theinstruction book to see what is wrong.

       2. If the indicator light of the controlleris not on, check whether the connection between the solar panel, the batteryand the load and the solar controller is normal. If it becomes loose or fallsoff, reconnect it.

       3. Check whether the battery is deficient.