I checked the ntc's and the flow one was reading very low resistance to earth. I have just changed it and the boiler is running.. I will keep you updated..
jim walton
This morning the boiler was not working. The fault code was F64... I turned off the supply and then switched it back on and the boiler worked ok..
After my shower I pressed + and - together and the fault code showed SF.H I can find no reference to this code........Any ideas...