Haier HCI604TPB3 Instruction Manual page 30

3. For model HCI604TB3/HCI604TG3, you can also turn off the heating zone
instantly by selecting the cooking zone which you want to turn off then
touching "-" and "+" at the same time.
4.Turn the whole cooktop off by touching the
ON/OFF control.
5. Beware of hot surfaces
'H' will show which cooking zone is hot to touch. It will disappear when the
surface has cooled down to a safe temperature. It can also be used as an
energy saving function. If you want to heat further pans, use the cooking zone
that is still hot.