What should I do if the boiler display shows a low pressure indication (LOPR)?

If low pressure is indicated on the appliance (LOPR), you should adjust the system pressure according to the instructions in section 3.1.1. The system pressure should be adjusted to between 1.3 and 1.7 bar. If you constantly have to re-pressurise the system, check for leaks on the heating system pipework and radiator valves, and contact your installer or maintenance engineer.