low pressure on Vokera Excel Boiler pilot like goes out?

I have a Vokera Excel Boiler...I seem to be having low pressure issues where the pressure guage drop below .6 bar. I top this up and all seems well. The pilot light keep goling out but I am not sure if this relates to the low pressure bar.

A re light of the pilot and increase in pressure and the boiler come back into action.