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All sorted didnt need a rain jacket ...... Thx 45yearsagasman for your advice well pleased it was the Diaphram in the water section £6.00 and all done. As for the 3 numptys Bunnyman, youllneverguess, Agile go swivel on a u bend you was no help at all ........ :P

Lads i ask on here because there are so many faults that it could be .... the part i was refering to was the differential valve the one in front of the gas valve. It has two pipes that run to above the pump, that has a diaphram in it. So i need to check the diaphram in the water section and...

Thx for the reply lads i will try the Diaphram ..... I do know a little about boilers but wanted to see some replys ..... I will take the boiler pressure down to zero and unscrew the diaphram body to release the two pipes that are connected, then take appart so if theres a little hole or its...

Help ////// I have a Vaillant Sine 18 T3 and everything has been ok up untill 2 weeks ago i noticed when we have the hot tap running slow the boiler doesnt fire up like before. When i put the heating on the boiler fires as normal and the taps work ok, and also when i turn a tap on full and the...