A320 COCKPIT DOOR OVERHEAD CONTROL PANEL

Strikes’ status lights

OFF : The corresponding (upper, mid, or lower) locking latch is operative.
ON : The corresponding (upper, mid, or lower) locking latch is faulty.

Pressure sensor

Two redundant differential pressure sensors enable rapid pressure variation in the cockpit to be detected, in order to command simultaneous opening of all latches when a defined pressure drop is detected.

Pressure sensor status lights

OFF : The corresponding (1 or 2) pressure sensor is operative.
ON : The corresponding (1 or 2) pressure sensor is faulty.
Note: These indicators enable the crew to identify the faulty item, when the Central Pedestal Fault indicator light is ON.