A quale is a sensation that does not have conditions of satisfaction, i.e. there is no way the world must for that sensation to be appropriate.
A representation has conditions of satisfaction.
Some representations, e.g. sense-perceptions, are mediated by quale, whereas others, e.g. thoughts, are not.
But even though quale sometimes mediate representations, they are never all there is to a representation. This is because a quale cannot have conditions of satisfaction unless accompanied by mentation that extracts meaning from that quale.
The quale that compose a visual perception would be so many non-representational blotches were they not intermingled with ideation that constantly assigned meaning to them.