It will be fine as long as you;
1. Make sure the filling loop is definitely off and
2. Bleed a radiator into a tub to drop the pressure back down to 1.5 bar.
Thanks you. Two more questions please.
1: By the filling loop, do you mean the grey switches under the boiler that I used to put in water 2) I now have no water at all coming from my hot taps. Is this related? What should I do?
Yes the 2 valves under the noiler
If you are still overpressurised then the boiler may not fire at all until rectified