Help with RCCB please

[Fluffyhead]

Hello everyone, New here I’m not an electrician but I have an interest, RCCB was tripping at least 3 times a day I couldn't find a fault so I replaced and it seemed to have solved the issues, but 3 days later the RCCB on the other side has tripped, dos anyone have any ideas please? I'm so annoyed I thought I fixed it but guess not. I was thinking both units need changing at the same time? Now I have put in a new RCCB the other side is old and is more sensitive? (10 years old) I’m just guessing can someone confirm this?
I would really appreciate any help
Thanks

 

[littlespark]

re #11, I don't think the OP is coming back to reply to any questions.

Rereading #1, Im confused to what it means by the RCCB on the other side?

 

[Deleted member 72666]

The second hand rccb could be faulty!

 

[Pete999]

re #11, I don't think the OP is coming back to reply to any questions.

Rereading #1, Im confused to what it means by the RCCB on the other side?

A Consumers Unit with 2 RCDs ??

 

[Zdb]

OMG! A second hand RCD off eBay for a "tenna" that doesn't trip.

This has to be a wind up.

 

[Pete999]

OMG! A second hand RCD off eBay for a "tenna" that doesn't trip.

This has to be a wind up.

Thats PANTS!?