Double check all the previous installation procedures.
1.Switch ON Power Switch.
2.Press Start Button for ≥5S, or till buzzer rings.
3. BMS need ~30S for self-checking.
*Make sure there is communication between inverter and BMS, otherwise will report external communication lost and no power output.
*When the breaker is tripped off because of over current or short circuit, must wait after 10min to turn on it again, otherwise may cause the breaker damage.
*During first time power on, the system will require to do fully charge progress for SOC calibration purpose.
*It`s also suggest to follow the BMS full charge flag to fully charged the system every 90days for better performance.