Well, i agree, but at the time, i had an f1 issue, which after some testing myself pointed to the Gas valve failure, at 175 sheets for the part im on a winner there straight away, no local plumber was prepared to quote near that to fit, and i don't blame them. But yes Homeserve are fking useless, bunch of young inexperience people from a call centre, believing everything theyre told by service companies unfortunately some of these companies are as dodgy as they are.
As it was they fitted the Gas valve and it was still ****ed lol and theyve left it in there so im happy.
Seems like i have the wrong boiler though

reading some other threads on here about 30cxi
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I could write chapter and verse about the 30cxi, basically its a s**t boiler. I work for a company that is resposible for about a thousand of these and there is not one of our engineers would have one in there own homes.
the heat ex problem is more than likely the seals to the flue which are prone to leaking condense. never had a problem with the heat ex itself just the seals.
the siphon trap is badly designed and prone to blockage, again condense leaking.
the cartridge in the diverter valve again is prone to problems, we change on average 3 or 4 of these a week.
if i moved house and inherited one of these the first thing I would do would be rip it out and get another boiler.
i moved in to house last year with one of these boilers (WHAT A PEACE OF S**T) i have had nothing but problems f14, f1, you name we have had it . the only thing you can do is get some decent boiler cover i had boiler cover with my barclys acount you pay about £10 for this acount and you get car cover boiler cover the lot its well worth getting as its saved me £800 last year and you get a thousand pounds a year cover on your boiler. if you have a GLOW WORM 30 CXI YOUR F**KED
pmsl i shouldn't be laughing really. Taken out boiler insurance with BG now, but has 14days grace.