Myson Economist Boiler fires up but switches off after a few minutes Help and information on all topics relating to your central heating, air conditioning and ventilation issues.

[rupert the dog]

Good Morning, first time on here. Our boiler is constantly shutting down. It relights (usually) easily, the pilot relighting, and then when I switch on the thermostat the boiler fires up as usual, but after a time - anything from a couple of minutes up to an hour- there is a loud click and it switches off again, and I have to go through the whole process again. I've checked the pump and its working fine. Any advice please? The boiler is a Myson Economist 50/60BF. Many thanks