My boiler stopped working over xmas with the red lock out light(flashing 4 times per second).Phoned local gas man,came round & after a few checks he got the boiler up & running by fitting a new air pressure switch.Very happy with price & gas man left.hours later after having heating on, boiler was back to same lock out and phoned back gas man but he can,t come back till the end of the week.He,s seemed to follow fault finding procedure in the manual but he did say that he wasn,t that familar with this model, i am wondering if the oringal fix was needed,boiler will reset but goes back to lock out after a short time.Does any body have any tips on what could be the problem so that i can give him some hints when he return,s.Many thanks lj
