CD3500 & CD4000 Installation and User manual
Lock does not open
when code us entered.
Codoor is in unlocked
Codoor does not sound
following key presses.
Batteries are rapidly
Lock does not open even
though backup power.
Check that the right code has been entered.
Make sure the handle is not pressed down as
the code is entered.
Check that the handle is not sagging.
Check that the time limit for automatic reset has
Check that Codoor is fitted exactly vertical.
Check that the lock is not fitted too tightly to
the door, in which case the handle could be
Check that the red mark on the follower for the
lever handle spindle is pointing downwards.
Set Codoor to locked position (if required)
according to the instructions in section
Activate the buzzer (see section Buzzer)
Frequent use requires frequent change of
batteries. The batteries last up to 150,000
openings (lithium-type) and 50.000 openings
Check the batteries and change any discharged
The blocking counter is activated. See section
Access blocking. Enter the programming code
(skip before and after the code).
The batteries may be bad and should be
The batteries are completely discharged and
should be changed immediately.