The code is entered, a clicking noise is heard from the lock and the lock does not open.
This may be an indication of side bolt pressure being exerted on the lock bolt by the safe boltwork. Or this may be an indication of a mechanical malfunction of the drive train within the lock itself.
If side bolt pressure is suspected, move the safe handle to the extreme right, then move the handle to the extreme left, now shift handle to the middle (or neutral) position. While handle is in the neutral position, re-enter PIN code lock should open. Run your combination and rock your handle back and forth for 6 seconds. Retry procedures 5 - 10 times.
If a mechanical malfunction is suspected, please contact your safe manufacturer for all information relating to warranty and repair.
6120, 6123, Z02 Locks