I have tried it on centos and it worked on my system. It is the normal user that can't set a password with more than 3 same characters/digits in a row, if he does then he get this message:
BAD PASSWORD: contains too many same characters consecutively
This may be of importance!!!
These modules may be stacked, or placed upon one another, so that multiple modules are used. The order of a module stack is very important in the authentication process, because it makes it very easy for an administrator to require that several conditions exist before allowing user authentication to occur.
Maybe this could be of help :