Set Appliance State:

WARNING! - Mains voltage is expected during test follow
TOPs P4 live testing procedure
Mains Power On

Observation:

To disable the calibration function turn the calibration control knob (see picture)
SF or P should now disappear from the display indicating that the calibration function has been disabled.
Has the calibration function been disabled?
Note:
The calibration function should also end automatically after a maximum of 20 minutes or if the maximum heating temperature is exceeded.