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Siemens Switzerland Ltd  User manual RVS61.843 CE1U2355en_02 
HVAC Products  5 Handling  23. November 2007 
Protection   
When using Protection, the heating system is off. But it remains protected against frost 
(frost protection temperature), provided there is no power failure. 
 
Characteristics of continuous operation: 
• Heating off 
•  Temperature according to frost protection 
• Protective functions active 
•  Automatic summer / winter changeover (ECO functions) and automatic 24-hour 
heating limit active 
 
Selecting cooling mode 
Cooling mode  
 
To select cooling mode, press the Cooling button. The selection made 
is indicated by a bar which appears below the symbol. In cooling mode, 
the room temperature is controlled in accordance with the time 
program. 
Characteristics of cooling mode: 
•  Cooling mode based on the time program 
•  Temperature setpoint according to "Comfort setpoint, cooling" 
• Protective functions active 
•  Cooling limit according to the outside temperature 
 
Selecting DHW heating mode 
The button is used to switch DHW heating mode on and off. The selection made is 
indicated by a bar which appears below the respective symbol. 
 
DHW heating mode  
 
• On 
The DHW is heated according to the selected switching program. 
• Off 
No DHW heating, protective function is active. 
 
DHW push 
The DHW push is triggered by keeping the DHW operating mode button on the 
operator or room unit depressed for at least 3 seconds. 
It can also be started when: 
•  The operating mode is “Off“ 
•  Operating mode changeover is effected via H1 or centrally (LPB) 
•  All heating circuits use the holiday function 
 
(if available)