My boiler keepings switching itself on & off every few seconds. Rads still work even though boilers switching on/off. The hot water goes from hot to cold every few seconds. The problem started last year, since then I've had 4 engineers trying to fix it but none can. One change the waterflow meter which made it work for a week then the same thing started happening. Most of the ovious bits have been changed but nothing works. Can anyone shed any light on the matter......
shy
shy