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hold up how do you know what biasi hes talking about becuase if hes talking about the 24s thats got 3 diaphrams one pump proving domestic and so on. the diverter valve your talking about is a givarnni diverter valves usually find them in vokeras and eurocombis i dont know a biasi with a givarnni...

yeah the amount of times ive been called out to ravenheat boilers and the customer has taken the combustion chamber of them selves!!!! :shock: :shock: i find the casing system on them pretty **** cant understand why they need to make the combustion cover so fidly so for that reason yeah...

ok if your talking about the pcb for the potterton pumas (which i love working on) i am aware that there is a resister in the top left hand corner of the board thats positioned to close to one of the plugs and usually burns out on the back of the board other than that im not to sure about the...

just wondering what you guys consider to be some of the worst boiler to work on are. my list goes a little something like this: all saunier duval hate the lot of em i gladly turn away saunier duval worcester bosch 26 CDi extra (what the hell was they thinking when they made this boiler...

hi there im a corgi registered heating engineer and the combi 80 is one of my fav boilers i like to work on i can usually fix them in 1 visit rarelly do i get stuck on them anyway.... just been reading your thread here and going by everything thats been said i would test and check the CH...