67
7.
Troubleshooting
Problem
Cause
Help
Lock does not unlock
y
y
Missing or faulty power
supply
(measure 24 V; terminal
G2 and V2)
y
y
The controller must be
supplied with at least
21 V DC (U
in
≤ 22 V DC with
emergency power backup
B-54903-23-3-9)
y
y
Check that the power supply
unit, fuse and cable cross-
sections are sufficiently
sized and replace if
necessary
y
y
No +24 V control signal
y
y
Check control input I1/I2
y
y
Emergency power backup
B-54903-23-3-9 is not
connected and jumper is
inserted
y
y
Remove the jumper or
connect emergency power
backup B-54903-23-3-9
y
y
Mechanically blocked
y
y
Remove blockage
- Door leaf or door frame is
twisted or warped
- Check door leaf/frame
- Active leaf is jammed
- Check active-leaf lock
- Screws are pressing
against the lock case or
vertical rods
- Check screws and shorten
if necessary
y
y
The controller is in
programming mode
y
y
Exit or abort programming
mode
(see point 6.2)
y
y
Test run not completed
successfully
y
y
Perform test run
(see point 6.5)
y
y
Deadbolt of the active leaf
lock (only B-2393x) has
been moved to the locked
position
y
y
Unlock the active leaf
y
y
Check wiring (see point 2.3)
Locks unlocks
automatically
y
y
Continuous signal at control
input
y
y
Check control signal
(terminal I1 and I2)
y
y
Incorrect cable assignment
y
y
Check cable assignment
between lock and controller
(see point 2.3)
y
y
Controller defective
y
y
Replace controller
Controller beeps
y
y
Error source according to
beep codes
y
y
See point 5.2
Summary of Contents for B-54900-01-2-8
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