DIY Doctor

Main navigation

Radiator wont heat up

Postby chrisroberts » Sun Mar 23, 2008 12:08 pm

Hi was wondering if anyone could help, i have a combi boiler located in the cupboard upstairs. all upstairs rads are really hot but the 2 in the living room are cold. i shut the valves off and removed the rad, blasted the rad thru with water and its perfectly clear. i then opened the t r v and only got a slight trickle when draining down yet when opening the return there was a good flow until system was empty. i replaced the t r v and refitted rad and filled system. i left both vales shut on rad then i opened the flow and bled air, rad got hot until i opened the return valve. could this be a case of a restriction in the flow pipe to the rad and how cud i romove it? wud a chemical flush sort this problem out? Thank you Chris.
Rank: Apprentice
Progress to next rank:
Posts: 21
Joined: Sun Mar 09, 2008 11:58 am


Simply Build It

Postby ALDA » Mon Mar 24, 2008 1:24 pm

Rank: Foreman
Progress to next rank:
Posts: 397
Joined: Mon Feb 04, 2008 8:15 pm

Postby rosebery » Mon Mar 24, 2008 1:52 pm


Rank: Project Manager
Posts: 2021
Joined: Wed Sep 26, 2007 8:55 pm

Postby macten » Thu May 01, 2008 1:06 pm

Bet the f+r pipes run vertical. As rosebery says - airlock.
Shut off all the upstairs rads and put the heating on (not the hot water) and wait for a gurgling sound and the airlock will be gone.
Rank: Apprentice
Progress to next rank:
Posts: 5
Joined: Sat Apr 26, 2008 9:36 pm

Display posts from previous
Sort by
Order by

  • DIY How to Project Guides
  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!

  • Related Topics