Re: OT: Anyone know anything about combination boilers?

["Mark Hetherington" <mark.egroups@xxxxxxx>]

--- In ukha_d@y..., Ian Oliver <ioliver.lists@c...> wrote:
> In article <9jl0fg+uc5u@e...>, Mark Hetherington wrote:
> > was indeed the changover valve. Not the
> > cheapest part in the world to replace either but I have got water
> > again now. Seems to be a common failing for combis.
>
> Was this valve in the boiler? Interesting.

It was yes.

> IME on all heating/water systems the valves are the dodgy bit. They
> either don't work, or when they work don't operate the microswitch
to
> fire the boiler.
>
> With skill you can replace microswitches, and it's also possible to
> swap-out motors and heads rather than replace the whole thing.

Basically my valve was stuck in the central heating position so when
turning on the hot tap, the boiler was feeding the radiators rather
than the hot water pipes. Once the radiators reached full
temeperature, the pressure was sufficient to move the valave very
slightly hence my getting a little hot water after the radiators
became hot.

All the micro switches and pumps were working correctly, just the
actual valve developed a fault and going by what I have seen of it,
it appears to be a sealed non serviceable part.

Mark.