This is the third Saturday in a row... Boiler working fine, thermostat working fine, heating works fine all other days in a row... apart from Saturdays, when it just conks out from approx 9am to 6pm. (It's like the boiler isn't receiving the signal from the thermostat or something, hot water runs instantly but just no heating). Why?!?! Last week I was willing to accept it as coincidence, but three weeks in a row is just too weird.
AIBU to think that my central heating is taking a day off a week, and can anyone think of any explanation for this?! We have tried the usual switching on and off, resetting etc. I am loathe to call an engineer out coz I'll sound crazy.