The guy I had come round to work on my Baxi has fitted a new D/H/W heat exchange and a day later I have no hot water again. The pressure gauge does not spike but the same banging noise comes from within the bolier then the flame led goes out!! He is coming back tomorrow pm. I wonder if he will...
Hello, When I run hot the water tap, the Baxi fires up then slowly begins to make banging noises. At the same time the pressure gauge jerks upwards until finally the gauge reaches maximum and the flame LED goes out. When the tap is turned off the pressure reverts to normal. Any ideas??