I have a Worcester Bosch Heatslave 20/25 combo boiler which is now a discontinued model. It has worked fine until recently, and been serviced regularly, but for some reason although there is power to the boiler it is not heating the radiators.
There seems to be no demand and hence it's not switching on and heating the rads. That said, when I turn on the hot tap, it fires up and hot water comes out. It also seems to spur it into life for a while and starts to heat the rads up, but it goes off again after a while.
I've bled the rads, and topped up the pressure which was a little low, but it still just won't work!
Any ideas before I call the Worcester engineer?
There seems to be no demand and hence it's not switching on and heating the rads. That said, when I turn on the hot tap, it fires up and hot water comes out. It also seems to spur it into life for a while and starts to heat the rads up, but it goes off again after a while.
I've bled the rads, and topped up the pressure which was a little low, but it still just won't work!
Any ideas before I call the Worcester engineer?
