Has this ever happened to anyone?
All last week my heating has come on just after 4.30pm as it should. The radiators get hot to start with. Then a few hours later when I go into the kitchen I see the boiler has turned off. So I have to put it back on.
This morning I checked the times on the display. Firstly that the clock was correct. Then the programmed on and off times.
The evening one should be On 4.30pm Off 10.30pm.
It had randomly changed, because their is no need to touch the control panel, to
On 4.35pm Off 5.30pm.
I've reprogrammed it, so will see what happens tonight.