Hope you can help!
Boiler: Baxi 100HE
Age: 3 1/2 years
Suddenly stopped working, refused to light, and starting dripping water out of bottom of unit.
Boiler repair man diagnosed Heat Exchanger, Ignition PCB and Main PCB (on which the fuse had blown) replacement.
Boiler worked for ten minutes after replacing those parts, and then reverted to same initial problem!
Anyone have any idea what could be wrong?