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Hi So after a lot of messing around with a new diaphragm and micro switch my pump has given up the ghost as well ( well it does come in 3s ) Any ideas on where best to buy....have seen prices upwards of £95 - £160 all for the same part... Any links/rerecomendations greatly...

Ok, am back...again.... Alpha cb28 - New diaphragm ( replaced in the summer) and new micro switch ( replaced a week ago ) getting hot water and heating now :) BUT i now have a sound of running water coming from the pipes under/leading in to boiler ??? Is this normal ?? Have bled all...

Hi, Have posted on here before and got great advice and help so am back again for more....CB28 had a new diaphram few months back and all was good then all of a sudden im not getting hot water, sometimes it works...and sometimes it point blank refuses and both the red and yellow neon lights...

Hi, I have just replaced the diaphragm in my alpha cb28 boiler as i had no hot water. The hot water is now working fine but when ever i turn the hot tap off the boiler screeches and whistles, the only way to stop this is to turn the boiler of at the electric and back on again. Boiler...