Diane thanks for your reply, my brother has just sorted this out for me & he said you need a long flat ended screw-driver & underneath as you said he said you have to shut off one of the valve's then open the other and this has solved this problem.
Shelly ( BFD )
February 2009
shelly
I'm currently having enormous problems with a new Vaillant boiler and top-up problems-been going on for a couple of months. Have you checked underneath the boiler?-there should be two switches-one to the left and one to the right?
Diane
February 2009
Automatic Answer
We may have found other answers which could help you.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix home heating systems.