Low-Pressure Side Is Low
- CHECK REFRIGERANT LEAKS.
Check the refrigerant for leaks. Refer to HVAC SYSTEM (HEATER, VENTILATOR AND A/C)>REFRIGERANT LEAK CHECK>INSPECTION .
NOTE: When high-pressure side is less than 0.69 Mpa: Go to step 2.Are there refrigerant leaks?
Yes: Repair the refrigerant leaking points.
No: Go to 2.
- FILL PROPER AMOUNT OF REFRIGERANT.
Drain all refrigerant, and refill proper amount of refrigerant.
- Recovery: Refer to HVAC SYSTEM (HEATER, VENTILATOR AND A/C)>REFRIGERANT RECOVERY PROCEDURE>PROCEDURE .
- Fill: Refer to HVAC SYSTEM (HEATER, VENTILATOR AND A/C)>REFRIGERANT CHARGING PROCEDURE>PROCEDURE .
Is refrigerant pressure within the standard value?
Yes: Refrigerant pressure is normal.
No: Go to 3.
- REPLACE EXPANSION VALVE.
Replace the expansion valve. Refer to HVAC SYSTEM (HEATER, VENTILATOR AND A/C)>EXPANSION VALVE>REMOVAL .
Is refrigerant pressure within the standard value?
Yes: Refrigerant pressure is normal.
No: Inspect the compressor. Refer to HVAC SYSTEM (AUTO A/C) (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>DIAGNOSTIC PROCEDURE WITH PHENOMENON>COLD AIR DOES NOT COME OUT EVEN WHEN THE A/C SWITCH IS PRESSED. THE GLASS CANNOT BE DEFOGGED. (COMPRESSOR DOES NOT OPERATE.) .