A potterton combi boiler with low pressure light on?

Your boiler has a low water pressure switch ,which stops the boiler from working when the pressure goes low ,it seems that the pressure has gone so low its blocked up the switch . You need to drain the boiler and unblock the Low Water Pressure switch .you need a Heating engineer to do that ,remember British Gas can fix it for a 1 off fee ,check www.house.co.uk

Gasman Paul
February 2007