Baxi 105 HE?

I have a Baxi 105 HE and over the past few days have had no central heating or hot water.

No lights are showing as faults. The hot water light, lights up when any hot tap is turned on. Same happens for the cetral heating, light on but no heating.

The pressure is at 1.0 bar when off or on.

I'm new to all this so have little or no experience as to whats what inside the boiler.

I hope someone can help as money is a 'very' big issue at the moment.

Thanks