Q . Reader Interface show 'Communication Down'.
Q . Green & Yellow LED not blinking or either one of the LED always light ON.
Q . EM Lock always release.
Q . EM Lock always lock even after valid access or pressing push button.
Q . Fingerprint often takes a few times scanning before it verified.
Q . Door Interface or Reader Interface often auto reset by its own
Q . Unable to login to controller, always shown 'Invalid Password'.
Q . System often down whenever there is lightning storm or blackout.
Q . Checking hardware version.
Q . Failure to send command.
