from my other new thread I posted I think we've found it's the actuator that's gone again, that'll be third one since moving in.... it's also had a new master switch I think. We're currently looking to see if we can find a better brand of actuator as apparently Danfos are prone to failure.
Any idea If there's another brand of valve that works better than that one, it's ridiculous that they don't last longer than about 12 months at a time....
I've replied to an old thread about this in the hope that the person got to the bottom of it and can tell me what the problem was. We've been in our new build 5 years and can't get any satisfaction finding he fault.
It's an unvented pressurised system. If the water and central heating is...
I'm hoping the person that originally posted this may get notification i've replied - we're having the exact same problem with ours, spent over £300 getting it sorted last Christmas and still it's doing it, it's driving us mad and getting to the stage where we're having to turn the boiler off at...