Controller adaptation
Depending on the heating system, the control behaviour can be adjusted.
Pulse width modulated control (factory setting): Optimised for electrothermal valve
drives (see Technical data): The output is not permanently actuated, but for a time
period (pulse width) that depends on the difference between setpoint and actual tem-
perature. This method brings the actual temperature gradually closer to the setpoint
temperature.
Two-point control: The output remains switched on until the selected setpoint temper-
ature has been exceeded by 0.5 °C. The output will not be switched on again until
the setpoint value is undercut by 0.5 °C. Since most heating systems respond very
slowly, this type of control can entail temperature overshooting.
Setting the valve type
Depending on the electrothermal valve drive used, an adaptation to the valve type
must be made. There are valve drives where the valve is opened (deenergised
opened) or closed (deenergised closed, factory setting) when no supply voltage is
applied.
6
Operation
Brief overview
Function
Control knob
Status LED *
LED colour
Change room tem-
perature
... turn right or
left
maximum 2
minutes
Red = heating mode
green = ECO heating mode
Blue = cooling mode
Orange = frost protection (10
seconds)
Display operating
mode
... press briefly
10 seconds.
Red = heating mode
green = ECO heating mode
Blue = cooling mode
Orange = frost protection
* In permanent operation, the status LED lights up continuously during the active
heating or cooling phase, but with reduced brightness.
Increasing or reducing the room temperature
￭
Turn the control knob to the right or left.
If the setpoint temperature is not reached, the LED lights up for a maximum of
2 minutes in the colour of the current operating mode. The indication can also
take place during the entire heating/cooling process (see Activate/deactivate
permanent LED operation).
Room thermostat (heating/cooling) 24 V
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82405003
16.09.2022
J0082405003