DIY Doctor

Main navigation

JG Speedfit underfloor heating issue

Postby Dickdutch » Thu Dec 15, 2022 5:16 pm

I’ve got JG speedily underfloor heating downstairs with rad heating upstairs, it’s been working fine until recently, upstairs is fine, but the underfloor isn’t working.

The thermostats are all connected, but it’s not triggering the boiler, as soon as I switch the boiler on for the heating upstairs, heat circulates underfloor.
Any ideas?
Rank: Labourer
Progress to next rank:
Posts: 1
Joined: Thu Dec 15, 2022 5:10 pm


Simply Build It

Postby stoneyboy » Fri Dec 16, 2022 9:52 pm

Hi dickdutch,
Suggest you investigate the zone valve for the UFH and make sure it is operating correctly.
Regards S
Rank: Project Manager
Posts: 6323
Joined: Wed Dec 10, 2008 6:44 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