G-U BKS B-1893 Serie Manual De Instalación página 63

7. Troubleshooting
Problem
Lock does not unlock
Locks unlocks
automatically
Red LED flashes
Controller beeps
Cause
y y Missing or faulty power
supply
(measure 24 V; terminal
G2 and V2)
y y No + 24 V control signal
y y Emergency power backup
system B-54903-23-3-9 is
not connected and jumper is
inserted
y y Mechanically blocked
- Door leaf or door frame is
twisted or warped
- Active leaf is jammed
- Screws are pressing
against the lock case or
vertical rods
y y The control unit is in
programming mode
y y Test run not completed
successfully
y y Deadbolt of the active leaf
lock (only B-1893x) has
been moved to the locked
position
y y Continuous signal at control
input
y y Incorrect cable assignment
y y Controller defective
y y Error source according to
blink code
y y
Error source according to
beep codes
Help
y y The controller must be
supplied with at least
21 V DC
y y
Check that the power supply
unit, fuse and cable cross-
sections are sufficiently
sized and replace if
necessary
y y Check control input I1/I2
y y Remove the jumper or
connect emergency
power backup system
B-54903-23-3-9
y y Remove blockage
- Check door leaf/frame
- Check active-leaf lock
- Check screws and shorten
if necessary
y y Exit or abort programming
mode (see point 6.2)
y y Perform test run
(see point 6.5)
y y Unlock the active leaf
y y
Check wiring (see point 2.4)
y y Check control signal
(terminal I1 and I2)
y y Check cable assignment
between lock and controller
(see point 2.4)
y y Replace controller
y y See point 5.1
y y
See point 5.2
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