When installing a victron MJultiplus II 15KW 230 Volt inverter/charger and a Victron autotransformer to ouput 240 volt 60 Hertz the MK3 isn't changing the Hertz from 50 to 60. The data download shows it changed but it is not being changed and the Cerbo GX shows 240 Volts 50 Hertz. I know the Hertz are wrong because of error message on my clothes dryer. What am I doing wrong?