Bolier continues firing even when controller is off

Postby ccox » Mon Feb 08, 2010 12:36 pm

System functions OK, both heating and water, while the timer/controller is on. However when the timer is on off, heating stops but water continues to be on> This is noticeable by the fact that the boiler continues to fire up every now and then. The only way this can be stopped is by turning off all electricity power to the controller which means I have to reset the programmer every time I wish to fire up the boiler> Another thing which may or not be related, the theromostat has no control over the temperature
Rank: Labourer
Progress to next rank:
Posts: 1
Joined: Mon Feb 08, 2010 12:25 pm


Simply Build It

Postby DEEARR2 » Mon Feb 08, 2010 8:45 pm

The one component that over rides the programmer is the frost thermostat. Worth having it checked and how it is wired into the control. Failing this the boiler electrical controls should be checked. What type of boiler is it?
Rank: Ganger
Progress to next rank:
Posts: 160
Joined: Sun Oct 12, 2008 8:49 pm

Postby gisago » Sat Feb 20, 2010 9:33 am

Sounds like hot water motorised valve. Could possibly be the timeclock, difficult to say without more system info.
Rank: Apprentice
Progress to next rank:
Posts: 17
Joined: Sat Feb 20, 2010 9:23 am

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