Final answer:
A FAULT light with an ECAM caution message on BLOWER and EXTRACT indicates a problem with the aircraft's air recirculation system, part of the environmental control system and may require immediate flight crew action.
Step-by-step explanation:
When the FAULT light illuminates along with an ECAM caution message on both the BLOWER and EXTRACT pushbuttons on aircraft's ventilation panel, it typically indicates a failure or fault in the air recirculation system. This fault requires attention by the aircraft's maintenance team and may necessitate immediate action by the flight crew depending on the nature of the fault.
The BLOWER and EXTRACT buttons are part of the environmental control system (ECS), which regulates cabin pressure, ventilation, and temperature to ensure a safe and comfortable environment for passengers and crew.
Learn more about Aircraft Ventilation System Fault Indication