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AIR BOOSTER 2
© STULZ SpA . – all rights reserved EN/10.2018/IT30I
5.1.2.3. Changing the value of a parameter
Make sure that the keypad is not locked (see paragraph 5.1.4). To change the value of a parameter
proceed as follows:
1. To access the programming mode, hold down SET + DOWN key for few seconds (°C/°F led
flashes);
2. Select the desired parameter;
3. Press SET to display the value;
4. Change it with UP and DOWN keys;
5. Press SET to save the new value and go to the next parameter.
6. To exit, press SET + UP key when a parameter is displayed, or wait 30 seconds without pressing
any key.
INFORMATION
The new set value is saved even when you exit without pressing SET.
5.1.3. Selection menu
Via the selection menu, you can navigate to the parameters which you want to read, change or
transfer to the quick display menu.
Access to the hidden menu (Pr2)
To access to the hidden menu, proceed as follows:
1. Access to programming by pressing SET + DOWN key for 3 seconds (°C/°F led flashes);
2. When a parameter is displayed, hold down SET + DOWN key for more than 7 seconds. ‘Pr2’
message will appear immediately on the display, followed by temperature proportional band
parameter (
). You are now in the hidden menu;
3. Select the desired parameter;
4. Press SET to display the value;
5. Change it with UP and DOWN keys;
6. Press SET to save the new value and go to the next parameter.
7. To exit, press SET + UP key when a parameter is displayed, or wait 15 seconds without pressing
any key.
INFORMATION
After 30 seconds, the new set value is saved even when you exit without pressing SET.
Move a parameter from the hidden menu on the first level and vice versa.
Each parameter in the hidden menu can be removed or entered into the first menu level (Pr1) by
pressing SET + DOWN key. If a parameter is in the first menu level (Pr1), when you are in the hidden
menu the decimal point is on.
5.1.4. Lock and unlock the keypad
To lock the keypad proceed as follows:
1. Hold down UP and DOWN keys for few seconds, until “POF” starts to flash. Press SET to finish
setting.
2. At this point, the keypad is locked. When the keypad is locked, the quick display menu is shown, but
it's not possible to make modifications. With the key SET you can switch between the display of
the actual value and the setpoint even in the locked mode.
3. If a key (not up arrow) is pressed for more than 3 seconds, “POF” appears.
