RCD problems

[Modernelectric]

I have fitted a dual rcd board, and everything has tested fine. my only problem is that the rcd's do not trip on the 180 phase roatation, but trip within limits on the 0 phase rotation. I have swapped both rcds for new to check that the rcd's werent faulty and i still have the same problem.

Has anyone had any problems like this? any clues because this one is ****ing me off.

thanks!

 

[Spudnik]

May sound daft bit would your tester be fautly?

Have you since used it on any other installs?

 

[Modernelectric]

Yes ive used it on other installs and its fine, its only a few months old, it seems no one else has encountered this problem then?! its a mystery to me.

 

[Ohmagain]

was any reason for this every found?

 

[Badged01]

With no further update from the original poster Im gonna guess operator error!