59
9.
Troubleshooting
Error description
Cause
Remedy
Lock does not unlock.
Missing or faulty power
supply.
The lock must be supplied
with at least 21.6 V DC.
Check that the power
supply unit, fuse and
cable cross-sections are
sufficiently sized and
replace if necessary.
No +24 V control signal.
Check control input
(Pin 09/pink).
Mechanically blocked
– Door leaf or door frame
is twisted or warped
– Latch is jamming
– The hardware screws are
pressing on the lock case
Check door leaf/frame.
Align or adjust latch striker
correctly.
Check hardware screws,
shorten if necessary.
The lock is in programming
mode.
End programming mode by
operating the key 3 times
(see Chapter 6).
Latchbolt remains in the lock.
No power supply, power
failure in the event of
motor-driven daytime
release.
The lock must be supplied
with at least 21.6 V DC.
Check that the power
supply unit, fuse and
cable cross-sections are
sufficiently sized and
replace if necessary.
Operate the lock as locking
cylinder.
A voltage of 24 V is
permanently applied on the
control line.
Check control signal,
deactivate the daytime
release (see Chapter 7.7).
Mechanically blocked.
See error description “Lock
does not unlock”.
Profile cylinder actuated.
Remove the key.
Lever handle permanently
actuated (follower).
Check hardware.
Lock unlocks automatically.
Door contact is defective or
not connected.
Check door contact or
wiring (see Chapter 4).
