
6 / 8 DualSense D © BBC Bircher / bircher.com 07.2023
4 Operation and maintenance
4.1 Regular work
▶At least once a year, remove dust from the inside the AIR
windows.
▶At least once a year, test the safety-relevant function of
the door system.
4.2 LED signals
LED Bedeutung
green – moving object in radar eld
red – new object in AIR eld
red ashing – AIR start
– AIR signal too strong/weak
– AIR break, 15 minutes
red and green
ashing alternately
– detector restart (6seconds)
red and green
ashing at the same time
– power supply faulty
– detector defective
4.3 Faults
Door fault
LED signal
Possible cause ▶Remediation options
Door opens and closes alternately with no one present
LED green
Radar detects door movement ▶Mechanical adjustment:
Increase the inclination angle
of the radar eld (away from the
door).
▶ Radar conguration: Reduce
the size of the eld.
Door opens with no one present
LED green
Moving objects in the radar eld ▶ Remove plants, signs, ags
from the radar eld.
Radar interference due to
vibration of the detector
▶Fix the mounting point of the
detector.
Radar interference by uorescent
lights
▶ Use a dierent kind of
lighting.
Radar interference by further
detector
▶ Radar conguration: Activate
the lter.
▶ Radar conguration: Reduce
the size of the eld.
▶Mechanical adjustment: Pan
the radar eld away from the
interfering radar eld.
Door does not close
LED red
AIR detects door movement ▶Mechanical settings: Increase
the inclination angle of the radar
eld (away from the door).
Moving objects in the AIR eld ▶ Remove plants, signs, ags
from the radar eld.
AIR interference due to vibration
of the detector
▶Fix the mounting point of the
detector.
AIR interference by uorescent
lights
▶ Use a dierent kind of
lighting.
AIR interference due to puddles
of water or snowfall
▶Decrease the AIR sensitivity
(conguration).
OCaution! Safety-relevant
function may be impaired.
AIR interference due to further
detector
▶ AIR conguration: Select
another frequency.
AIR interference due to door
drive or other electromagnetic
inuences
▶Optimize the cable routing
according to → 3.2 (step 4) and/
or reduce the AIR sensitivity
(conguration).
OCaution! Safety-relevant
function may be impaired.
Door does not move
LEDs o
Safety-relevant function is
congured incorrectly
▶ AIR conguration: Switch
the output between active and
passive.
LED red ashing
Display: Message A2002
AIR signal too weak
▶Clean the AIR light windows
and restart the detector
(conguration/general/reset).
▶Mechanical settings: Readjust
the angle of the AIR eld.
Check the eect on the signal
strength in the signal monitor
(conguration info: AIR sign).
▶ Cover light-absorbing oors
in the AIR eld with a light-colored
surface. Check the eect on the
signal strength (conguration
info: AIR sign).
Display: Message A2003
AIR signal too strong
▶Mechanical settings: Readjust
the angle of the AIR eld.
Check the eect on the signal
strength in the signal monitor
(conguration info: AIR sign).
▶ Cover reective oors in
the AIR eld with a matt surface.
Check the eect on the signal
strength (conguration info: AIR
sign).
LED red and green ashing at the same time
Display: Message A2004...A2007
Supply voltage too low
▶Ensure that the supply
voltage is sucient. If the supply
voltage is guaranteed according
to the technical data, replace the
detector
Display: Message E ...
Detector defective
▶Replace the detector.