worcester heatslave

I have noticed that the pump on a Worcester Heatslave 20/25 Oil Boiler fitted in a house I have recently purchased runs continuously, even when the heating and hot water are not being used, causing any radiators without a TRV to stay hot 24x7. The only way to turn off the pump is by setting a...

Hello, looking for help/ideas with the above oil boiler. It is switching itself on and running and blowing the boiler stat and sometimes the water high limit stat. There is no demand set on the controller. There is no in house stat, purely run by timer. Electrician has tested demand isn`t...