We have had a glow worm flexicom 30 cx boiler fitted and where the boiler is they have fitted a box and it says drayton digistat scr wireless system, and downstairs they have fitted a drayton digistat+3 rf. When it was installed i was told i just had to press the up button on the stat until 21 and then a flame will show to say the heating is on, I have done this and i get the flame to show but the radiators don't come on so i was wondering if i have done something wrong or ain't the stat picking up the boiler and it needs resetting some how.