Upstair Central heating radiators warm all day Home › Forums › Public Forums › General Plumbing › Upstair Central heating radiators warm all day This topic has 1 reply, 2 voices, and was last updated 21 years, 2 months ago by Harold Kestenholz. Viewing 1 reply thread Author Posts 13 Feb 2003 at 11:07 pm #276352 MasterPlumbersKeymaster During the last week we have noticed that the radiatirs upstairs remian onthroughout the night even though the GCH is de aactivated through the control panel. ANy idea as to why happens [email protected] 14 Feb 2003 at 5:08 pm #293981 Harold KestenholzParticipant Control valve failure? Author Posts Viewing 1 reply thread You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In