From Inverter photo,
String 1, 348V 5.3A --> this is 40 tile, single string
String 2, 335V 5.3A --> this is 39 tile, single string
String 3, 245V 4.7A --> this is 27 tile, single string
String 4, Not connect, should be 27 tiles x 2 (parallel string)
If String 4 works properly, it should be...