A/C Operational Test

A/C Operational Test

Preliminary Setup
- Start and run engine until normal operating temperature is reached.
- Open the fascia and the rear vents.
- Switch the left hand control to low fan speed.
- Select the mid position of the face level control.
- Turn the right hand control to the fully cold position.
- Select manual by pressing the mode switch until "MAN" is illuminated.
- Ensure the "AIR" button is not illuminated.
- Ensure that the humidity button lights are not illuminated to give full air conditioning.
- Check that the recirculation flaps are open.

Testing
1. Press the "ECON" button and ensure the compressor clutch disengages (the engine revs change and there is an audible click).
2. Press the "ECON" button and ensure the compressor clutch re-engages, (the engine revs change).
3. Switch the left hand control to normal fan speed and check that the fan speed increases.
4. Switch the left hand control to high fan speed and check that the fan speed increases.
5. Switch the left hand control to defrost and check that all the air is to the windscreen and no air at the footwell.
6. Switch the left hand control to high fan speed, ensure that there is no air to the windscreen but air to the footwell.
7. Press the "AIR" button, ensure that air is to the screen and at the footwell; also ensure the "AIR" button light illuminates.
8. Press the "AIR" button, ensure that there is no air to the windscreen and the "AIR" button light does not illuminate.
9. Switch the left hand control to normal fan speed, check for very cold air from the center vent and rear compartment vent.
10. Turn the right hand control to full heating.
11. Ensure the engine is running at normal operating temperature.
12. Ensure the center vent closes and that there is warm air from side, footwell, and rear compartment vents.
13. Turn the right hand control to the minimum red position.
14. Ensure that cool air bleeds from the center vent.
15. Turn the right hand control to the full cold position.
16. Ensure the center vent fully opens with cold air flow.
17. Select "AUTO" by pressing the mode switch until "AUTO" is illuminated.
18. Turn the right hand control to the mid point position.
19. Run the vehicle and allow the system to stabilize.
20. Apply heat to the in-car sensor using a lamp.
21. Ensure the temperature drops at the side vents and the center vent opens.