Fault Possible cause Action
Operator/control unit
not working.
No power. LED status does not light
up.
• Switch on main switch.
• Check fuse of power supply.
• Control unit faulty -> replace.
Unable to
open/close door with
transmitter or
button.
Safety device or bridge not connected,
depending on model.
• Connect the necessary safety
devices.
• Install bridges.
Control unit executing self-test, Status
LED off.
• Wait for self-test to finish, approx.
4 seconds.
Light barrier interrupted, faulty or not
correctly recognised. Safety LED
flashes 2x intermittently.
• Remove obstacle.
• Check light barrier, e.g., power
supply.
Light barrier interrupted, faulty or not
correctly recognised. Safety LED
flashes 2x intermittently.
• Remove obstacle.
• Check electrical safety contact strip.
FRABA optical safety contact strip activated, faulty or not correctly recognised. Safety LED flashes 1x
intermittently.
• Remove obstacle.
• Check electrical safety contact strip.
Permanent signal applied to pulse
input. Connect button correctly or
replace.
• Connect button correctly or replace.
• Timer on pulse input.
EMERGENCY OFF active. • Unlock EMERGENCY OFF
Unable to
open/close door with
transmitter. Transmitter not
programmed.
Transmitter not programmed. • Program transmitter, see Chapter 7
“Radio receiver”.
Battery in the transmitter is empty. • Replace battery, see operating
instructions for transmitter.
Button not connected correctly or
faulty, thus permanent signal.
• Connect button correctly or replace,
see Chapter “6.4” or “6.5”.
RDC vision
en 43