Problem
Empty screen
Unstable image
Image too bright
A whistling sound can be heard
No sound at mobile unit / outdoor station
Dark monitor image during twilight /
darkness
The monitor image displays a bright back-
ground, however the visitor is displayed
dark
Tamper alarm has been triggered
The batteries in the door intercom go flat
very quickly
The camera image cannot be switched on
manually
No intercom function / "Low battery" is
displayed on the screen
Additional doorbell only rings when the
upper doorbell button is pressed
Remedy
Check the mains adapter, cable connections and batteries
Remove the protective foil from the battery of the mobile unit
Check the mains adapter, cable connections and batteries
Reduce the distance between the devices
Remove large objects or change the location of the stations
Remove sources of interference from the devices, note the
information about "wireless range" in charpter 7
See chapter 13.2
Switch the mobile unit on (see chapter 10)
Relocate the outdoor station
Change the direction of the camera or relocate the outdoor
station
Place the stations further apart
Reduce the volume on the indoor station
Adjust the volume / ring duration for the mobile unit / outdoor
station as necessary on the menu of the mobile unit
Install additional lighting
Install additional lighting or change the location of the outdoor
station
To switch off the tamper alarm, press the on/off button
[8]or the talk button
[1] on the mobile unit.
Switch the door intercom to energy-saving mode (see note
under section 11.2)
Switch the door intercom to energy consumption mode (see note
under secrion 11.2, Note: the batteries will go flat very quickly)
Replace the batteries
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Cause
Outdoor station has no power
Mobile unit has no power
Outdoor station is too far apart
Wireless connection is blocked
Interference with wireless signal
The devices are not paired with each other
The mobile unit is switched off
Strong light source in camera view
Overexposure due to strong light source
It is produced by acoustic feedback
The volume on the mobile unit / outdoor station is
too low or is switched off
The outdoor station requires additional lighting to
be able to display a good image
There is too much backlighting in the background
Outdoor station with power supply has been
removed from the protective cover
Outdoor station (operated with batteries) is in energy
consumption mode
Outdoor station (operated with batteries) is in energy-
saving mode
Batteries in outdoor station are too low / almost
empty
An additional doorbell can only be connected to the
23. Trouble shooting
40 - GB