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Can you confirm the system pressure?
Can you take it put to 1.5 bar and see if works, it may be a faulty gauge?
The 2 levers under the boiler - there is one on the cold and another on the heating pipe.
Do you not have the instructions?
Try the 2 blue ones, one first then the second one to see if the pressure starts rising. Turning them in line with the pipework turns them on.