18
Operation
6 720 801 019 (2012/05)
5.6 BUTTON LOCK
The button lock affects the CH flow temperature control, the hot
water temperature control and all buttons except the main switch
and the service engineer mode button.
To switch on the button lock:
B
Press and hold the button until the display shows
.
To switch off the button lock:
B
Press and hold the button until the display shows only the CH
flow temperature.
max
1
2
3
4
5
6
max
1
2
3
4
e
6
eco
reset
min
