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Hi, I have a Worchester Bosch Greenstar 35cdi boiler with Underfloor heating & rads upstairs. Im looking for any advise or things to check before calling out a service engineer to service it and also repair it. The problem is that it keeps cycling when on Central heating mode only. UFH only...

Hi, I have a Vokera flowmatic 20-80 RS that has a leak i think at the 3 port diverter valve. The central heating works fine and the leak doesn't leak when its on but when ever i use hot water from the tap it leaks. Right at the leak there is a bit where 4 screws can be put in but on this...