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Hi Dave, The boiler sounds quite noisy when the temperature goes up high 80 plus and the flame then goes out and doesn't cut in again for a minute or so until the temperature has dropped. It sounds like there is some "sloshing" of water in the immersion tank when the boiler cuts out as if...

Hi Dave yes it is a 400 series open vent - no it has never worked properly! Once it stopped generating hot water for a day but I rattled the pipework, banged the pump and it has been back to its usual (albeit poor) self. the readings are: d40: 70 d41:45 - after it has been running a couple...

Hi, i was wondering if anyone can offer any advice? The downstairs rads do not seem to get hot (warm up eventually to luke warm after a few hours) - upstairs is fine. the gas boiler keeps cutting out as the water nearby gets very hot - OK it's a circulation problem I guess...the system is...