While you wait for answers, we may have found some information which could help you.
Click here for Pilot Burner FaultyCentral heating radiator doesn't gets hot sometimes and sometimes does?
how to repair potterton kingfisher?
Pilot light won't relight?
Potterton kingfisher 0-max knob?
Radiators upstairs will not go off after relighting Potterton Kingfisher ?
Pottertton Kingfisher Boiler Overheating ?