PNI CT25W Manual Del Usuario página 9

Locked keys function (child protection)
Press the Up and Down keys simultaneously for about 5 seconds.
The Locked Keys function becomes active and the "padlock" icon
appears on the screen.
Long press the Up and Down keys again. The function becomes
inactive and the "padlock" icon disappears from the screen.
Reset
Press the Mode and Up keys simultaneously for about 5 seconds.
The thermostat will shut down and restart automatically. All
settings have returned to factory values.
Advanced settings
When the thermostat is off (nothing is displayed on the screen),
long press the Mode key for about 5 seconds to enter the
advanced settings mode.
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