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Siemens Switzerland Ltd  User manual RVS61.843 CE1U2355en_02 
HVAC Products  5 Handling  23. November 2007 
5.2 QAA55..  
5.2.1 Operation 
 
 
Operating elements 
2358Z34
 
 
Display choices 
 
Heating / cooling to the Comfort 
setpoint 
 
Error messages 
 
Heating to the Reduced setpoint 
 
 
Display of all segments. 
 
Display of all segments. 
Example of basic display: 
2354Z09
 
2354Z09
 
 
 
Selecting pace heating mode 
This button is used to switch between the different 
operating modes. The selection made is indicated by a 
bar which appears below the respective symbol. 
 
Automatic mode    
In automatic mode, the room temperature is controlled in accordance with the time 
program. 
Characteristics of automatic mode: 
−  Heating mode according to the time program 
−  Temperature setpoints according to the heating program "Comfort setpoint"   or 
"Reduced setpoint" 
 
−  Protective functions active 
−  Automatic summer / winter changeover and automatic 24-hour heating limit active 
(ECO functions) 
 
Display 
Selecting heating mode  
(if available) 
Occupanc
 button  
djustment of room Comfort 
setpoint