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Hi, I have a Vaillant EcoTech 624 system boiler, around 7 years old. Last week after having the boiler serviced (which inluded re-pressurising the expansion vessel), and when we first starting using the CH again after the summer and first cold weather, the CH worked OK for a day or two...

Apologies, this was posted in the wrong place. Hi, I have a Vaillant EcoTech 624 system boiler, around 7 years old. Last week after having the boiler serviced (which inluded re-pressurising the expansion vessel), and when we first starting using the CH again after the summer and first...

Thanks to everyone who replied to my previous post earlier this week. I have been having problems with the pressure on my Vailant ecotec 624. It was going right up to 2.7 and then, when switched off it came right down to 0.4 and needed topping up. Since then the EV has been repressurised a...

I have a pressure problem with my four year old Vaillant ecotech plus 624 system boiler. I've just had an engineer round who re-pressurised the expansion vessel. When I switched the boiler on for heating and hot water in the afternoon  after he left the pressure went right up to 2.8 bar...