Sorry it is oil and its the 15/19 rs boiler.And its basically that after using the hot water-or turning the hot water to on position on the control box-the boiler then switches back to ch mode burner fires up but 2 way valve wil not move intill the ch has manually been turned off then back on...
I have a worcester heatslave combi boiler-heating will come on no probs-but when you use the dhw heating then goes cold i have to turn the heating off then back on again to get it to work..I have had a good read on here and taken the cover off the honeywell valve-when heating is turned on the...
