The Pilot on my Potterson Profile was not lighting , there is a Reset button underneath but nothing happened when I tried to press it
I bled the whole system , there is air bleeder pipe on two pipes and on top of the Potterson Profile Boiler , I use a spanner to release the Air
I then put the Room Thermostat to 30 , then put the Heating and water on , the Boiler fired then I revert it back to Hot Water
It really depend who fitted the Boiler and there may be that the system keep collecting Air
I am thinking of taking British Gas Boiler Service £15 per month for peace of mind
It is always best to leave Gas to the Professional, If it blows there may be loss of life and Insurance issues
Good luck
sam, August 2008