my heating has a schedule daily to turn on at 6-8am; 20c- 9c; then at 4-6pm ditto; 20c-9c. however without fail every night at 2am exactly it powers up back to 20c; i have to get up then and turn it back to 9c. it is costing me a fortune.
it also does exactly the same during the day around midday but i haven't found the exact time. My local engineer has no answer. anyone any thoughts/suggestions...? we are in the UK.
