I have a Worcester combi boiler (9.24 I think) which I am told is about 12 years old. The hot water has stopped firing up when the tap is turned on unless the central heating is on as well. A plumber did squirt it with some WD40 which worked for a couple of weeks but now it has stopped working again.
Any ideas how to solve the problem properly or does this suggest a need for a new boiler??
Any ideas how to solve the problem properly or does this suggest a need for a new boiler??