……… is it so difficult to set the thermostat on the underfloor heating?

I credit myself with having a logical mind, which can read and process information effectively. So why did it take me 25 minutes to work out how to do get some heat into our bathroom? Why can’t these things be really simple!! And why is the instruction booklet so complicated!

I recall the installer telling me many years ago “I’ll just leave the instruction book so you can work it out as it is too complicated for me to explain”.