DIY Doctor

Main navigation

What is this white box item on underfloor heating manifold?

Postby Doyouhavetheanswer? » Sun Jan 15, 2023 9:41 am


I have a wet UFH manifold that has recently been wired to a heatmister system.

The heatmister system is working perfectly but the UFH system keeps locking out. I then have to press the reset button on a white box. This usually, (but not always) will allow the UFH pump and port valve to activate.

The boiler is fine, the port valve to the upstairs radiators works normally when the ufh has tripped.

Can anyone help me with two areas..
1. What is this white box on the manifold?
2. How can I solve the problem?

Photo of the box and the reset switch.
Rank: Labourer
Progress to next rank:
Posts: 1
Joined: Sun Jan 15, 2023 9:34 am


Simply Build It

  • 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