actually shes just told me that when she turned upstairs off the kitchen rad did feel aired-not hot but not properly cold.what do you think about the zone valve-any diagnostic tips?pls
hi,
my girlfriends having a problem with rads downstairs not working at all but upstairs theyare.hot water is perfect.a heating engineer"friend" has replaced the pump but this has made no difference,hes also bled it to no avail,and hes now saying that its problably a blockage and says probably...