I have just moved into a flat which has a Sabre 29HE Plus combi boiler. It is heating the water but when I switch the Main control to the hot water and central heating setting, it still heats the water but no central heating.

I don't have a thermostat in the flat and I have set the clock dial correctly.

Any ideas??

Richard Blyth, April 2012

Diverter valve motor is faulty ,it's black round pull out see if pin is come out and in

ltd, April 2012