Which switch is used by the crew to manually control flight deck temperature?

The flight deck temperature is manually controlled using the FLT COMPT switch. This switch is specifically designed to allow the crew to adjust the temperature in the flight compartment, ensuring comfort and optimal operating conditions for the pilots during missions.

The REMOTE TEMP CONTR switch, while involved in managing temperature settings, does not directly control the flight deck environment. The COMPT AIRFLOW switch is related to airflow management rather than direct temperature control, and the AVIONICS COOL ORIDE switch pertains to cooling the avionics systems rather than the overall flight deck temperature. Each of these options serves important functions but does not directly provide the manual control of flight deck temperature as effectively as the FLT COMPT switch.