We would advise running your Heat Pump somewhere between 18 and 22 degrees on heating in Winter. If you want to keep it on all night you can drop the temperature back to around 18 degrees – or use the ‘Sleep Function’ (Q Series feature) to take of it for you.
During the summer, you can run your Heat Pump on cooling at around 18 or 19 degrees, and if you wanted to run it all night you could increase the temp by a degree or two.