Hi i have a fairly new ideal combi boiler now the c/heating works fine but put the hot tap on hot water comes out for few secs then boiler switches off then you get cold water out then boiler switches on again ? has green led lit and green and red led flashing

stevo, February 2009

yes i think its to do with water pressure. On the pressure gauge is it. down the bottom. or up near the the red?

Dwane3963, February 2009