ENVIRONMENTAL SYSTEM CABIN OVERHEAT
1. TEMP Circuit Breaker - RESET.
2. Auto Temperature Select - MANUAL.
3. Manual Hot/Manual Cold - MANUAL COLD; HOLD FOR AT LEAST 30 SECONDS FOR MAX COLD.
IF NO CHANGE IN TEMPERATURE OCCURS
4. Windshield Bleed Valves - CLOSED.
5. Air Source Select - EMER.
NOTE
• Pressurization air will enter the cabin through the cockpit air distribution system (foot warmers, side panels, defog). EMER pressurization air will be controlled at approximately 120°F.
IF STILL NO CHANGE IN TEMPERATURE
6. Altitude - DESCEND as soon as practical.
7. Air Source Select - FRESH AIR if necessary (cabin will depressurize).