On Fri, 12 Dec 2008 13:57:16 -0800, Jon Connell wrote:

On 12 Dec, 20:58, Ed Sirett wrote:
Start with the simple stuff first, has someone inadvertently moved the
heating Â*temperature setting on the boiler?

There are dozens of possibilities. Make and model will eliminate a
number of them.

It's a WB HighFlow 400 (an infamous combi if my googling is right). I've
given the diverter valve a bash tonight and it's not helped it unjam and
I can't see any obvious way on this boiler to force it to open the CH
flow. One I did notice is that the temperature of the the rads is not
constant: some are warmer than others and a couple and cold at the
bottom and warmish at the top.

Jon

WB offer a fixed price repair. Since this is likely to be above the
average amount of work to put right it is probably a very good deal.




--
Ed Sirett - Property maintainer and registered gas fitter.
The FAQ for uk.diy is at http://www.diyfaq.org.uk
Gas fitting FAQ http://www.makewrite.demon.co.uk/GasFitting.html
Sealed CH FAQ http://www.makewrite.demon.co.uk/SealedCH.html
Choosing a Boiler FAQ http://www.makewrite.demon.co.uk/BoilerChoice.html