Description :

Tick / Confirm       :

This is used for selecting options.

Return / Backup    :

A short press returns you to the previous screen. 

In Program Mode a long press returns you to the home screen without saving.

In Manual Override Mode a long press returns you to Auto Mode.

In Auto Mode a long press returns you to Manual Mode.

Cog / Settings        :

A long press enters Settings Mode. 

In Settings Mode use a short press to make a change or save a change.

Display ON           :

Wakes the screen from battery save mode.

Arrow Keys          :

Used to Scroll up and down a menu. Increases or Decreases a setting value.

Holding rolls value sequentially.