Baxi Bahama 100?

I Have a Baxi Bahama 100 combi boiler; it came with the house that I just bought. The hot water works, but it takes time for the hot water to run through. I have put that down to the 7m or so that it has to travel to the main hot tap.

My problem is that the heating side of the boiler does not work. The hot waster is fine, but the boiler does not fire up when I set the selector switch on the clock to constant or timed. The boiler is set to run both the hot water and heating on that selector switch.

The pressure on the front is set to a little over 1 Bar

Any suggestions?