My Baxi 105e gives occasional hotwater, I changed the diaphragm and it worked well for a week. It stopped working again I dismantled ithe housing again and cleaned it up a bit but every now and again it doesn't give hot water unless you tap the front bottom left of the boiler casing. Could it be i need a new housing for the diapragm or is it something else? Many thanks for your help

Jed, February 2008

hav you replaced the D.H.W sensor? if not try that

m,edwards, February 2008