INSSTE403NP1010
Lock option
It is possible to impose a maximum tempera-
ture set point by activating this mode. Then, it
becomes impossible to exceed this set point,
regardless of the current mode (Day/Night).
However, it is still possible to lower the set
point at your discretion. All the other functions
remain unchanged. To unlock the set point, you
must cut off the power supply of the thermostat
for security purposes.
Locking procedure
1. From the Day mode, adjust the set point at
the maximum desired value.
2. From the Day mode, simultaneously press
down the two buttons for more than 10 sec-
onds, until the Lock icon displays (note that
the icon will also blink after 3 seconds).
3. Release the buttons. The thermostat is now
locked.
Unlocking procedure
1. Cut off the power supply of the thermostat at
the electrical panel.
2. Wait at least 20 seconds.
3. Restore the power supply of the thermostat
at the electrical panel.
4. The Lock icon is blinking on the thermostat
display, meaning that it is possible to unlock
the thermostat.
5. While the Lock icon is blinking, simultane-
ously press down the two buttons for more
than 10 seconds, until the Lock icon disap-
pears.
6. Release the buttons. The thermostat is now
unlocked.
NOTE: If the thermostat isn’t unlocked within
5 minutes after the restoration of the power
supply, the Lock icon will stop to blink and it
will be impossible to unlock the thermostat
unless cutting off the power supply again.
Heating power indicator
The level of power used to maintain the tem-
perature at the set point is expressed as a
percentage indicated by the number of bars in
the thermometer displayed. The heating power
used is displayed as follows:
0 bar = no heat
1 bar = 1% to 25%
2 bars = 25% to 50%
3 bars = 50% to 75%
4 bars = 75% to 100%
Power failure
In the case of a power failure, the adjustments
are automatically saved and recovered when
power is restored. Note that the Day/Night
mode is recovered only if the Automatic mode
was previously deactivated. Otherwise, the
thermostat comes back in Day mode and the
Automatic mode icon blinks, meaning that the
Automatic mode was previously activated and
that it is now deactivated. Blinking will stop as
soon as a button is pressed down.
