Control Assembly: Testing and Inspection

1. Connect the vacuum tester to black color hose of the vacuum connector.
2. Connect the vacuum hoses to mode control switch.
3. Clog the vacuum port for fresh/recircle control switch.




4. Check for vacuum hiss from the mode switch and vacuum hoses, and inspect for air flow between each hoses when the mode switch is at the each positions as shown.

NOTE: 'V' :make air flow with black hose.

If air flow is not as specified, replace the mode switch.