After long and frustrating investigations I am convinced it is the Digistat as this is the second that has gone wrong.
I also am starting to believe, as there seems to be a lot of other purchasers mentioned this problem, that this a design problem and therfore they are not fit for purpose...
I have the identical problem which has baffled my gas engineer. Again, it has been working fine for 2 years from new and has been working fine until now.
Suggestions have been wireless interference from WiFi. I have had WIFI since the installation and nothing has changed so why now??? It also...