It might end the trip issue or he could be back with issues after
Or worse again more than 1 rcbo tripping on the new board . I've seen that happen where previously there was an RCD tripping . :mrgreen:
Still though a bit early to be stating that the tripping issue has been resolved considering the board was replaced today
And it appears that it was a board swap with live testing afterwards . No IR testing done by the sound of it.