Hi I have just cleaned my filter in the bottom of the screenwash resevior as I was only getting a trickle come through - it was pretty gunked up.
I have reconnected everything and now no water comes out.
I took the pump out again and sat it in a jug of water with pipes and electrics connected and everything worked fine, but as soon as I connect it back to the resevoir, nothing. I can hear the pump working but no water, front or rear.

I have an 04 Signum Elite - 2.2 dti Auto

Any help please - I am cold and frustrated!