If two buttons are operated at the same time, the middle buttons
take precedence, i.e. if buttons 1 and 2 are operated, only button 2
is evaluated.
Position LED on the switching unit
The ecoUnit241…246 make it possible to activate skylights.
Depending on the project, it may be required that the light switches
must be easy to find even when the room is in darkness.
Depending on the settings for the function parameters, the position
LEDs for the room operating unit and the switching unit are on or
off.
To enable the position LED of switching unit EY-SU306 to light up,
the terminals must be connected with the same number as on the
room operating unit (room operating unit
→
switching unit).
Terminals Position
LED
(EY-SU306)
6
→
7
7
→
6
LED off (hardware-coded, no influence by function
parameter)
6
→
6
7
→
7
LED lights up if the room operating unit is
parameterised accordingly
Presets/default values
Different functions can be defined during the engineering or
commissioning phases.
•
Analogue values (direct from sensor)
•
Value corresponds to voltage at terminal 4 (0…10 V)
The digits on the LCD display (1, 2, 3, 4) are used to set the
parameters and the offset for the temperature display.
The following presets (default values) are set ex works:
•
Analogue value display in °C (direct from sensor)
•
MFA 40, comm.2: window symbol appears
•
MFA 41, comm.4: dew-point symbol appears
•
Position LED of room operating unit and switching unit = active
•
Fan display = active
•
Presence display = active
•
Display offset for temperature = 0
Function parameters, ecoUnit241…246
Digit Value
Description
Range
Analogue value display (direct from
sensor)
4
0
(default) Display in °C (measurement range
0…40 °C)
0…99.0
Resolution 0.1 K
1
Display in °F (formula: Tf = Tc * 1.8 + 32) 0…99.0
Resolution 0.5 K
Value 0…10 V (95 steps), from terminal 4
(with smoothing of display)
2
Display in °C; resolution 0.1 K
16.0…25.5
3
Display in °C; resolution 0.5 K
-9.5…35.5
4
Display in °F; resolution 0.5 K
5.0…99.0
5
rh (symbol with digits 1 & 2), no decimal
point
5.0…99.0
6
% (no decimal point)
0…100
Digit Value
Description
Range
7
ppm (no decimal point)
0…9999
8
Lx (no decimal point)
0…9999
9
No value display or physical units
MFA 40, comm. 2
3
0 (default) Window symbol
1
Heating
symbol
2
Cooling
symbol
3
Note
symbol
4
Hide setpoint correction OFF
5
Reduced symbol (moon)
6
Dew-point
symbol
MFA 41, comm. 4
2
0 (default) Dew-point symbol
1
Heating
symbol
2
Cooling
symbol
3
Note
symbol
4
Hide setpoint correction OFF
5
Window
symbol
Position LED for EY-RU and EY-SU;
fan display; presence display
1
0 (default) LED = on; fan = active; presence = active
1
LED = on; fan = active; presence =
inactive
2
LED = on; fan = inactive; presence =
active
3
LED = off; fan = active; presence = active
4
LED = off; fan = active; presence =
inactive
5
LED = off; fan = inactive; presence =
active
Show function parameters
When the ecoUnit241…246 units are connected to the power
supply ('power up'), there are 60 seconds available to call up
parameterisation mode.
When button [D] is pressed for more than 5 seconds during this
period, the device changes to parameterisation mode. The
parameterisation is shown. All 4 digits flash (slowly).
If no button is pressed, the unit changes back to operating mode
after 5 seconds.
Adapt function parameters (default values)
The housing cover of the ecoUnit is located beneath the
transparent cover or plastic insert. The operating buttons are
clearly labelled on this surface (A, B, C, D, E, F).
When the ecoUnit241…246 are connected to the power supply
('power up'), all the symbols are shown for 1 minute. It is possible
to change to parameterisation mode during this first minute.
When button [D] is pressed during this period, the unit changes to
parameterisation mode. Only digit 4 continues to flash. The
transition to parameterisation mode is indicated by 'SEt' on the
display.
•
Digit 4 flashes. You can now 'scroll' through the digits from 0 to 9
using buttons [D] and [C].
•
Press button [C] for a long time to confirm the setting you want.
Digit 4 is continuously lit. This completes the setting of the
analogue value. Digit 3 is now flashing.
