I'm really in the s**t need help boiler keeps sayin f5 I can only have it on timer and that don't work all the time now its not lightin boiler it tries to though and pressure dial as gone over 2 please help
Water pressure on 1.2bar if not boiler will not work ,is fan run if not boiler will not work ,pump ok ,try reset ,just to see what's ,could be air pressure switch or water pressure switch