Helios KWL-MZB-BE, Installation And Operating Instructions Manual, Page: 11 / 16

The LEDs display the selected ventilation stage. If ventilation stage 1 is flashing,
basic ventilation is selected. If the key pointing downwards is pressed until
none of the three LEDs is lit up or flashing, the unit is deactivated (only possible
when basic ventilation is deactivated).
Basic ventilation
If ventilation stage 1 is flashing, basic ventilation is active. Basic ventilation
ensures a minimum air exchange which serves as moisture protection.
OFF (only possible when basic ventilation is deactivated)
When „Off“ mode is selected, the MZB dampers will be closed and the air dischar-
ge/supply to the service unit will be interrupted.
Error message
The error message shall be displayed in case of a unit operating error by lighting
up the LED. If an error message is displayed, promptly inform the service depart-
ment.
Error list MZB-BE
Error
number
Flash code Description
0 - No error
1 2x fl pause Error system memory. Unable to load Parameter
data.
3 6x fl pause Error communication internal sensor.
Unable to set up communication with configured
sensor.
4 8x fl pause Error communication. Unable to set up communicati-
on between MZB and BE.
2 .0 Technical data
KWL-MZB-BE
for flush-mounted installation
Voltage
12 V
Operating stages
4 (ventilation stage 1-3, basic ventilation/off)
Control line
J-Y(St) 2 x 2 x 0 .6
Protection rating
IP20
Dim. (W x H x D) mm
80 x 80 x 10
Ambient temperature / humidity 0-55°C <95% RH (none condensing)
Weight
54 g
2 .1 Wiring diagram
m
Danger to life through electric shock.
The electrical connection and maintenance, as well as installation work, must only
be carried out by a qualified electrician.
Connect control element according to wiring diagram.
CHAPTER 2
INSTALLATION
m
DANGER
EN
3
Control element - KWL-MZB-BE
Installation and Operating Instructions