Hi

I have a worcester 240 combi RSF boiler. Its always functioned well
until a week ago. The problem it has developed started when running the
washing machine but is getting worse. Basically running the hot water
causes the pressure to very rapidly increase past the critical level
(past 2 bar I believe), the boiler then gives an almighty clatter and
shuts itself down.
I then need to press the reset button to restart the boiler. A couple
of other things I have noticed
1) the power light is on but the green demand light doesnt light. But
perhaps this could be just a red (or rather green) herring - like
most things, I tend not to notice when they are working well and it may
be just that the bulb has gone.
2) when the hot water is running the flame does seem very full - but as
it is normally not visible behind the outer cover I have nothing to
compare with to know what its like when its running normally.
3) I just tried a test to see if the same thing happened with the
heating. On this occasion it ran ok, the radiators heated up and then
it switched itself off (properly) when the set temperature was reached.
But the problem may be intermittent - I then tried the bathroom tap and
that was ok too, so thinking I had isolated the problem I ran the
kitchen tap - but on this occasion that was also ok. However this
morning running the hot tap made the boiler misbehave within less than
a minute

Does anyone recognise this behaviour, and have any idea what is
happening? And is there anything that I can do, or is it a "call
someone out" jobbie?

"peri" wrote in message
ps.com...
Hi

I have a worcester 240 combi RSF boiler. Its always functioned well
until a week ago. snip woe

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