Tecnosystemi HI-TECH PUR 4.0 User Manual page 63

Screen lock
To avoid accidental touches, the display can be locked: press the ON/OFF button for more than 6 seconds to lock the
screen and press it again for more than 6 seconds to unlock it. The lit padlock symbol above the watch indicates that
the screen is locked
Data display and operating mode
By pressing the MODE button you can scroll through the following screens in sequence:
• Internal temperature, "RA" interface
• External temperature, "OA" interface
• Exhaust air temperature, "FR" interface
• Supply temperature, "SA" interface
• Supply temperature setting mode (visible only with electric heater function
enabled, see chapter 6.4 SETTING PARAMETERS)
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