In message , Dave Clark
writes
Hi

I am not too clued up on boilers, but thought I would post a message
to see if anyone had any ideas.......

We have a Vaillant Combi (not sure on model at the moment) It is
relatively old, the Vailant phone number is missing the 01 so I
presume it is older than 9 years (i think BT changed the numbers in
1995)


Is this a known issue with older Vaillants?

Any help will be appreciated

Well, you need to find out the model of your boiler. Is it a Sine 18 or
a 242E (H) for example? They're completely different boilers
--
geoff