My boiler will start from cold and heat up the rads and hot water. But after it clicks off it doesnt come back on. The pump is still running but it wont fire up again. If you toggle the c/h temp control and switch it off and on again you can get it to fire but it only lasts for about 30 seconds then stops.I think it could be the c/h thermostat but would be grateful for other possible causes.
Any ideas?
Any ideas?