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Building Technologies Basic documentation LMV37.4... CC1P7546en
HVAC Products 21 Operating the AZL2… unit 01.12.2009
21.2 Meaning of symbols on the display
P
Vh
min
s%
Parameter setting mode
Info mode
Service mode
Actuator closing
Actuator opening
Fan motor controlled
Oil preheater on
Heat request from controllers
Ignition controlled
Valve controlled
Flame present
Fault status message
Unit of current display
7546z09e/0707
Figure 58: Meaning of display
21.3 Brightness of the display
Only available with backlit LCD:
The function of the backlit display is dependent on the type of basic unit used.
The brightness of the display can be adjusted from 0…100% using the parameter 126.
No. Parameter
126 Brightness of display