This may need to be done after a power disturbance that affects the AC power to the sterilizer. In order to switch display between degrees F and degrees C, when the sterilizer is running:

1. Put it into shut-down-mode
2. While in shut-down-mode, press cycle 1 and 3 for a second at the same time.
3. Put sterilizer in start-up mode and display should now read the opposite of what
it was, (Celsius or Fahrenheit). If it does not, unplug and plug sterilizer from AC.
4. If it still shows the wrong range, repeat steps 1-3 above.

Thank you –
~Shlomo Savyon
Your Sterilizer expert