Help!!!! Boiler comes on in normal way, but every now and then , it starts to rumble and bubble scalding hot water up into the expantion tank in the loft. Its melted the ball valve. Plumber replaced it and programer /room stat /tank stat & mid posion valve. pump works he even flushed the system through.
Fine for two days, but started doing it again. He has now run away from it. and i canot find anyone to even look at it. Please can anyone Help with some advice

Tom, March 2008

as stated boiler stat.
no wonder he ran away if he changed all that and still couldn't solve the problem.
he's not a plumber he's a cowboy.

hi-spec plumbing & heating, March 2008

REPLACE BOILER THERMOSTATE

TONY, March 2008