Epever ET4415BND User Manual page 23

 Before switching on, recheck the step of ①～④and make sure all wirings
correct, especially ④connected with battery and PV array.
 Turn on the battery Fuse firstly. Observe if battery indicator light and
startup interface work fine or not (Refer to section 4). Always connect the
battery firstly, in order to allow the controller to recognize the system
voltage.
 After battery works fine with power on, switch on the breaker of PV array.
With enough sunlight, the charging LED will blink and the controller will
begin charging.
 If the battery LED error exists or LCD interface alarms, refer to section 5 for
troubleshooting. When disconnecting the system, the order will be
reserved.
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