I've recently had a drayton digistat fitted. Firstly I can't get my head round the presets when I set it 15 low and 25 high following the instructions to a tee if you then press the set button it goes to 22 but the worse thing is if you just turn it up to max it fires up for a few mins the turns off but the flame on the stat stays on its driving me mad and makes me wish I'd stuch with the old danfos.