Yesterday I noticed that the radiators were hot even though the danfoss FP715 programmer was in the off mode, the CH pump located in the airing cupboard is also constantly on. To recitfy this I have to swith the boiler off when not needed but if I would like to heat the water up for a bath the radiators get hot again even though the thermostat in the hallway is on 0 plus the CH pump is on regardless of all mentioned?