Troubleshooting - BKS B 1956 Manual De Instalación

7.

Troubleshooting

Problem
Lock does not unlock
Latchbolt remains in the lock
Cause
• Missing or faulty power
supply (measure 24 V)
• No + 24 V control signal
• Mechanically blocked
- door leaf or door frame is
twisted or warped.
- latch is jamming
- the hardware screws are
pressing on the lock case
• The lock is in programming
mode
• Profile cylinder actuated
INFO: if the cylinder is operated when the motor is in operation,
the lock switches to overload protection and does not respond
to control signals for 20 s!
• No power supply, power
failure in the event of motor-
driven daytime release
• A voltage of 24 Vis
permanently applied on the
control line
• Mechanically blocked
• Profile cylinder actuated
• Lever handle permanently
actuated (follower)
Help
• There must be at least 21.5 V
DC at the lock.
Check that the power supply
unit, fuse and cable cross-
sections are sufficiently sized
and replace if necessary
• Check control input
(Pin 9/pink)
• Check door leaf/frame
• Align or adjust latch striker
correctly
• Check hardware screws,
shorten if necessary
• If the latch is jammed
(motor under short-circuit
conditions), the lock does
not respond to control
signals for 20 s
• Exit or abort programming
mode (see point 6)
• Remove the key
• Check the cam position when
removing the key (see point
3.3)
• There must be at least
21.5 V DC at the lock
Check that the power supply
unit, fuse and cable cross-
sections are sufficiently sized
and replace if necessary.
• Actuate lock via profile
cylinder
• Check control signal;
deactivate daytime release
(see point 3.5)
• See point "Lock does not
unlock"
• Remove the key
• Check hardware
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