Hi, I have the Growatt inverter and Pylontech battery connected to PV array. The battery is charging but I can't get the BMS working, when setting program 5 to L1 and 36 to LO2 I get error 20 and 04. When I change program 5 to US2 the error disappears and L1 flashers on Screen next to battery icon, how to know if BMS is working.Thank you