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CB1B1440en / 2013-09-12 

Subject to change 

Siemens Building Technologies 

4/4 

Control parameters 

If you want to change the control parameters, proceed as follows:

 

 

+ / – 

1.  Set the thermostat to Frost Protection mode 

 . 

2.  Press 

+

 and 

 simultaneously for at least 3 seconds. 

Release the buttons and, within 2 seconds, press 

 again for 7 seconds. The display will show "P02". 

3.  Select the required parameter by repeatedly pressing 

+

 or 

 . 

4.  Press 

+

 and 

 simultaneously. The current value of the selected parameter starts to flash. Adjust it by 

pressing 

+

 or 

 . 

5.  Press 

+

 and 

 simultaneously again to display the next parameter. 

6.  If you wish to display and change additional parameters, repeat steps 3 through 5. 
7.  Service or expert level: 10 seconds after the last display or setting, all changes are stored and the 

thermostat will leave the parameter setting mode.  
Expert level: Press 

+

 or 

 until "End" is displayed. Then, press + and – simultaneously to save the change 

and exit the parameter setting mode. 

 

No. 

Thermostat’s parameter 

Factory setting 

Setting range  

 

P02 

Selection of operating mode via operating mode  
button   

1 = Frost Protection – 

Comfort mode 

RDD310/EH: 

1 = Comfort - Frost 

Protection 

2 = Comfort - Economy - 

Frost Protection 

 

RDE410/EH: 

1 = Auto - Comfort - 

Frost Protection 

2 = Auto - Comfort - 

Economy - Frost 
Protection 

 

P05 

Temperature sensor calibration 

0.0 °C 

-3…3 °C 

 

P06 

Standard temperature display 

0 = Room 

temperature 

0 = Room temperature  
1 = setpoint 

 

P08 

Comfort basic setpoint 

20 °C 

5...40 °C 

 

P09 

Min. setpoint limitation in Comfort mode (Wmin

Comf

5 °C 

5...40 °C 

 

P10 

Max. setpoint limitation in Comfort mode (Wmax

Comf

35 °C 

5...40 °C 

 

P11 

Heating setpoint in Economy mode 

16 °C 

Off, 5…18 °C 

 

P14 

Button lock (press operating mode button   for  
3 seconds to lock or unlock) 

0 = Disabled 

0 = Disabled 
1 = Auto lock 
2 = Manual lock 

 

P30 

Switching differential in heating mode 

1 K 

0.5…6 K 

 

P38 

External input 

0 = No input 
1 = External sensor 

input 

 

P45 

Heating system load in kW 

2.8 kW 

0…3.6 kW 

 

P51 

Floor heating temperature limit 

Off 

Off, 10...60 °C 

 

P65 

Setpoint of heating in Frost Protection mode 

 (Wheat

Stb

)  8 °C 

Off, 5…18 °C 

 

P69 

Temporary setpoint in Comfort mode 

Off 

Off = Disabled 
On = Enabled 

 

P71 

Reloading factory settings 

Set value to "On" and confirm by pressing 

+

 and 

  

Off 

Off = Idle 
On = Reset 

 

d02 

Status X1 

Diagnostics 

0…xx °C = Measured 

temperature 

 

d07 

Software version information 

No adjustment 

 

 

(All temperature settings can be made in increments of 0.5 °C with the exception of P51, which is in 1 °C) 

 Please write down all changes you make! 

 
 

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CB1B1440en / 2013-09-12 

Subject to change 

Siemens Building Technologies 

s

 

 

 

Operating Instructions 

RDD310/EH, RDE410/EH 

 
RDD310/EH and RDE410/EH – the room thermostats for use with electrical floor heating systems. The products feature a 
built-in room sensor to control the room temperature, and the user can connect a cable temperature sensor to limit the 
maximum floor temperature. The thermostat provides Comfort, Economy and Frost Protection mode. The RDE410/EH also 
features an Auto Timer with 8 programmable time switches. You can either rely on the factory settings or make adjustments 
that suit your individual needs. 
 

 

 

Are your rooms too warm or too cold? 

+

 / 

– 

 

Press 

+

 or 

 to increase or decrease the current room temperature setpoint in increments of 0.5  C for 

Comfort mode. 5 seconds after the last push, the room temperature setpoint is automatically saved. The 

display stops flashing and shows the room temperature currently measured. 

The maximum setpoint setting range is 5...40 °C, unless limited by parameters P09 and P10. 

 

Do you require continuous Comfort mode? 

 /   

 

Press the operating mode button 

 to switch to Comfort mode 

. In that case, the room temperature 

setpoint is always maintained at the Comfort level. 
The RDE410/EH has a dedicated   button for selection of the operating mode. 

 

 

D

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p

la

y

 

O

p

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ti

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 a

n

d

 s

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tt

in

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s

 

 

Buttons locked 

   Heating demand 

Measured room temperature, 
setpoints and parameters 

  Symbol when current room 

temperature is displayed 

Current time of day * 

Colder/Warmer

 

Weekday 1…7 (1 = Monday/7 = Sunday)* 

 

Confirmation

 

of settings

 

 

View and set Auto Timer 
programs

 

 

Frost Protection/  
system On

 

RDD310/EH

 

RDE410/EH

 

* RDE410/EH only 

 

Time of day and weekday 

 

Selection of operating mode 

 

– Auto Timer (

 

– 

Comfort 

(

 

– 

Economy 

(   )

**

 

 

Selection of operating mode

 

 

- Frost Protection (

)  

 

Comfort 

(

 

Economy 

( ) ** 

  Frost Protection mode 
  Comfort mode 

  Economy mode 

 

Auto Timer mode * 

Colder/Warmer

 

**  If configured by your HVAC installer 

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