Yes the dial for the ch is turned right off I have tried it with the programmer disconnected and still the same, hw works fine but as soon as demand for hw ceases diverter goes back to ch with pump running. And boiler firing (not constantly)also if I remove the motor head off the diverter it is...
Hi I have a Worcester heatslave oil combi boiler the diverter valve was stuck in the hw position I took off the motorised head freed up the stem and thought all was good,however when I've put it back together the head seems to be powered all the time making it default to ch if I kill the power...