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Thanks for your help guys. Disconnected the pipe as Kev suggested then checked the red knob and black lever. The red knob was loose/wobbly but seemed like the valve underneath was closed. The black lever was also firmly closed. Switched the boiler back on and pressure immediately started...

Yes, but the tap on it is firmly shut

Hello, Just got home to my six day old BRAND NEW Vaillant Ecomax 828 E combi boiler and found the pressure has crept up to the max 3 bars. Turned the heat down and bled the radiators. Stuck the boiler back on and it's still at 2 and a half bar and creeping back to the red. Anyone have...

Well, the best of the engineers I've seen has just given me this option as a replacement for my 14 yr old kaput Vaillant. Aesthetically I'd opt for the Bosch but is the Glow Worm mechanically better in any other way? I don't care that the Bosch is slightly more expensive if it's as good as the...

Thanks, Muckylugs, but I'm not qualified to make a repair of that size, even at the princely sum of £17! Since the "monster"s gotta come off the wall anyway I'm gonna get a Bosch Greenstar shoved in and have done with it. No bath/no heating: too awful to go on with any longer!

It's a Vaillant gas fuelled, fan-assisted combi, cat: VCW GB 242 EH (GC No. 4704413).

Thanks for all your help everyone. The expansion vessel has a leak and won't hold pressure for more than ten minutes so apparently replacement or a new boiler are the only options. Unfortunately it seems as though getting either job done is going to take a couple of weeks - without heating or...

Hello again. I posted on here a few days ago about my gas Vaillant combi boiler which decided to pack up on Sunday. I have since called an engineer out to take a look at it and he's advised me that I need a new expansion vessel. Because the boiler is 14 years old, he has said that I'd be...

Hi. Boiler's been working fine for over a year. Pop out for half an hour - get back and find the pilot light won't function and system pressure has dropped to zero. Re-establish pressure but pilot still won't light and lockout switch doesn't seem to make any difference. Pressure is slowly...