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9.5 Operation instructions
The display behaves differently depending on the mode and the state that the controller is currently operating in.
The thermostat can be in one of the following states:
Off: Energy stop state where the
controller neither heats nor cools. No
background light is lit, only the On/Off
button is shown and usable.
Occupied: Comfort (Standard) state
or if a presence detector is connected
and someone is in the room. Optimal
heating and cooling takes place.
Standby: Energy saving state where
reduced heating or cooling takes
place.
Meaning of the buttons
On/Off button
Arrow Up = increase button for setpoint adjustment (+)
For start parameter list: press both
together until the display shows 0000,
then short Up to show P001.
Arrow Down = decrease button for setpoint adjustment (-)
Changeover button to switch between heating and cooling via the display
Fan button to regulate the fan speed via the display between AUTO / MAN (off/1/2/3)
The display can be in 3 modes, when controller state is Occupied or Standby:
- Active mode: The controller is activated, but no changes are made now. The display shows either the current room
temperature (standard) or the calculated setpoint (if parameter P045 is set to 0).
- Setpoint mode: This mode is activated when pressing one of the arrows when in Active mode. Either the calculated
setpoint ± adjustment (standard) or the current user defined setpoint adjustment (if P046 = 1) are shown.
- Idle mode: The controller has been inactive during a set time span (activatable with P044 > 0 seconds). All buttons
and segments, except the two arrows, are dimmed down in the display.
9.6 Settings
Starting from display is in active mode, the controller settings can be edit in the following way:
1. Press both arrow buttons together until the display shows
0000.
2. Then press short “up”, to show P001 = Parameter 1.
3. Use “up” or “down” to step through the parameter list.
4. Press shortly the On/Off button to go in edit mode.
Setting value is shown and flashes.
5. Edit the value by arrow buttons “up” or “down”.
6. Confirm your edit with press the On/Off button. Display
jumps back to the parameter number.
If the display is left in the Parameter menu for more than 10 seconds without any activity (buttons pressed), the controller will
automatically exit the parameter menu. The parameter menu can also be left, with the selection of “EXIT” and confirm with On/Off.
The most important parameters are:
Code Description Default Min Max
Code Description Default Min Max
P001 Basic setpoint (SPbasic) 20°C 5 50
P012
0 = no contact connected
1-2 = not used
3 = presence detector connected
(switches between Standby and Occupied state)
4 = change-over (heat pump in COOL mode)
0 0 4
P002
Hysteresis used for setpoint calculation at
Occupied state (heating and cooling)
1K 1 10
P044
Delay for the display to dim down and enter Idle
mode. If set to 0 (Basic) the display never dims
0s 0 600
P003
Hysteresis used for setpoint calculation at
Standby state (heating and cooling)
5K 1 30
P045
Display setting Active mode, shows current…
0 = setpoint 1 = room temperature
1 0 1
P008
0 = 2-pipe systems
0 0 1
P046
Display setting Setpoint (SP) mode, shows …
0 = calculated SP 1 = SP adjustment
0 0 1
P009
Change-over mode, fan release function via
heat pump supply sensor at AI
4 = manual setting in the display via button
5 = manual Heat
6 = manual Cool
7 = automatic via digital input DI
4 0 7
P047 Maximum setpoint adjustment increase 3K 0 20
P048 Maximum setpoint adjustment decrease 3K 0 20
P049
Brightness of segment at Active and Setpoint
mode as well as in the parameter list
100% 0 100
P010
Temperature difference between the
current room temperature and the water
temperature (AI1) to release the fan at Heat
3K 1 50
P055 Version number, device type dependent
EXIT Leave the parameter menu, confirm with On/Off
P011
Temperature difference between the
current room temperature and the water
temperature (AI1) to release the fan at Cool
3K 1 50
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