On Fri, 15 Dec 2006 01:56:07 -0800, matthew.larkin wrote:

On Dec 14, 11:06 pm, Tony Bryer wrote:
On 14 Dec 2006 13:54:43 -0800 wrote :

I've got an intermittent fault with a 5 year old combi boiler.
Every
3-4 months or so the heating will pack up for a couple of days
and then sort itself out.You'll increase the chance of a helpful answer if you tell us the
make and model

--
Tony Bryer SDA UK 'Software to build on' http://www.sda.co.uk

OK, will do when I get home - but my assumption is that it is something
"fundamental", rather than boiler specific. In fact, it may be
completely unrelated to the boiler itself (as it produces hot water
fine).

My gut feeling is that it is something to do with the circulation
system itself (by which I mean the water flowing around the pipes,
radiators and radiator thermostats) rather than the boiler which is
causing the problem; and therefore any useful suggestions around that
side of things would be useful.

One thing I should note; the top radiator in the house (in the
converted attic) does seem to get a lot of air in it, to the extent
that when I vented it the other day I had to re-prime the system with
more water before it would force all of the air out of the system. But
we don't seem to have any water leaks, so I don't see how air would be
getting into the system.

I'll post the boiler details later on today, but thanks for reading and
responding Tony.

Matt

It's almost certainly the diverter valve inside the combi.
Make,model and date of installation would be useful.




--
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
Gas Fitting Standards Docs he http://www.makewrite.demon.co.uk/GasFittingStandards