Basic Documentation

Functions
Additional functions
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A6V12114068_en--_c
4.5.5 User operation / Indication
If the "Key lock" function is enabled by P14, lock or unlock all buttons by pressing
the operating mode button for 5 seconds.
If "Auto lock" is configured, the thermostat automatically locks the buttons 10
seconds after the last adjustment; unlock the buttons as per manual locking.
P14 can be configured as following:
P14
0
Unlocked
1
Lock (all lock)
2
Setpoint adjustable
3
Setpoint lock
4
Fan lock
5
Operating mode lock
When P14 is set to 3…5, the related function is locked and the corresponding
symbol is not displayed.
The key lock command from Modbus has higher priority. Users are not able to
change the operating mode by pressing the key button on the unit to release the
key lock unless an unlock command is received from Modbus.
The key lock command from Modbus provides several function levels:
0 = Unlocked
1 = Lock (all lock)
2 = Setpoint adjustable
3 = Setpoint lock
4 = Fan lock
5 = Operating mode lock
4.5.6 Prevention
In very warm and humid climates, the fan runs periodically or continuously at a low
fan speed (e.g., in empty apartments or shops) in Economy via setting P61, to
avoid moisture damage due to lack of air circulation. See "Fan kick" function in Fan
control [➙ 39].
Key lock (P14)
Key lock command
Avoid damage from
moisture (P61)