bit of weird one

hi all

bit of weird one solars been installed 6 months , no problem through winter months then sun arrived and full day then slight bit rain the, both direction rcbo 25 tripped , this has done it on couple occasions same scenario , so today turned off panels as I knew rain was coming after prolonged sunshine spell , no trip at all all , gave it 1hr then turned on pv panels 1 hr later generating and no Tripp any ideas ??

Pierreplus

I’d had my system about 20 months. No problems until one of the RCBO started to trip randomly. It did it about 6 times over two weeks. I couldn’t identify a set of circumstances for when it happened. I told my installer about it. They replaced it and it hasn’t happened since, which is over 3 months.