Refrigerant Pressure Check

Refrigerant Pressure Check
1. Install the manifold gauge set.
2. Close all the doors and all the windows.
3. Warm up the engine and run it at a constant 1,500 rpm.
4. Turn the AUTO switch on.
5. Set the temperature setting dial to 18.0°C (65°F).
6. Measure the ambient temperature and the high- and low-pressure side readings of the manifold gauge.




7. If the high and low pressure side readings are in the shaded zone shown in the figure, the refrigerant system is normal. If the pressures are abnormal, refer to flowchart No.27 and troubleshoot the system.

Chart 27