DIY Doctor

Main navigation

Baxi Solo HE Gravity Fed Boiler Hot Water but no Heating?

Postby TallPaul90 » Mon Feb 04, 2019 9:22 am

I have a Baxi Solo HE gravity fed boiler with hot water tank upstairs. All working fine until last Saturday when the heating stopped but boiler still working when hot water switch was on. Basically the boiler works ok when control unit upstairs has hot water switched on, the heating will work fine as long as hot water switch is on, but when hot water switch is off or times out, then pump stops and boiler turns off and no separate heating will work ? Any ideas ? Thank you. Paul
Rank: Labourer
Progress to next rank:
Posts: 1
Joined: Mon Feb 04, 2019 9:12 am


Simply Build It

Postby ericmark » Wed Feb 06, 2019 12:30 pm

First thing I would look at is the motorised valve/s. The way most work is programmer tells thermostat and then thermostat tells motorised valve/s which in turn tells boiler to turn on, if the motorised valve sticks, or a micro switch fails then boiler will not fire up.

If a three port valve, some times latching bleed lever to bleed position will get central heating working as a temporary measure.
Rank: Project Manager
Posts: 2657
Joined: Fri Oct 02, 2009 8:49 pm
Location: Llanfair Caereinion, Mid Wales.

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