We may have found other answers which could help you.
Click here for Work Despite Running
how can i get radiators hotter?
i have fitted a second hand rayburn and can't get radiators to work?
Has the Pulsacoil system have to be drained to replace the thermosistors?
rwb 200?
i need to increase the pressure on my highflow 400 electronic rsf boiler?
Rayburn boiler, erratic function?