Boss Room thermostat BPS242RF problem?

having problems setting heating to come on with timer. If the temperature drops below comfort setting it comes on even on auto. Also, on a morning, when I want heat to come on, if the room thermostat is above comfort setting the heating won't come on. Have to get out of bed and increase heat setting manually. However, as I said, I get the problem of the heating coming on randomly if I set the temperature I require. auto seems to be overriden by the other features. Don't seem to be able to set a temperature I require and put it on timer.
please help