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CS106/BL106 Combined Door Entry and Coded Access
30
Troubleshooting
Use the table below to determine the most probable cause of a fault condition.
Symptom
Possible Cause/Remedy
When power applied nothing
happens (LEDs do not flash)
Power Supply is overloaded. Remove
externally connected components until
the fault disappears.
Polarity not correct. Measure the
voltage at the C106 (+ , -)
Check Power Supply Fuses. Always
replace with fuses of the correct type
and rating.
Lock release operates in
reverse
Incorrect output has been used;
Transpose connections between
Fail-safe and Fail-secure outputs.
Red and Green LEDs flash
together when attempting to
operate lock-release.
Fail-secure Lock release output is
short-circuited or of an incorrect rating;
temporarily disconnect the lock release
and retry (Green LED on for 3
seconds), test lock release (page 28)
The lock release fails to
operate when the Test button
is pressed
Check the lock release and its wiring by
moving the lock connections to +
C, -H, (forcing the lock)
Measure the voltage on the FAIL SECR
terminals; this should be the same as
the power supply (13.8V) while the test
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