change the content code to F4, and press SET button enter setting
parameter values, press or button set the parameter to 5,return
to content code after compete setting ,and then press or button
modifies the content code to F5,press or button set up the
parameter to 10,then press RST button save and save parameter and exist
then back to the temperature display (If there is no any action within 20
seconds, the controller will automatically exit parameters setting return to
temperature display without saving the modified parameters)