While you wait for answers, we may have found some information which could help you.
Click here for Water Changed Thermistorhow can I get my potterton kingfisher CF 180 to fire up?
how to repair potterton kingfisher?
Where can I get instructions for potterton Kingfisher II?
Pottertton Kingfisher Boiler Overheating ?
Potterton kingfisher 0-max knob?
My radiators will not go off?