I have a Puma 80 boiler, it is running 7 radiators in a 3 bed flat.I have noticed that with C.Heating control set at min the radiators still get very hot, the boiler runs for short periods and is off for short periods.I have replaced the C.Heating water temp sensor and have tried a replacement modulation control board.I do not have a room thermostat.Is this normal or should I have better control over the CH temp.
