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Home >> Subaru >> 2024 >> WRX GT >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> HVAC System (Heater, Ventilator And A/C) >> Refrigerant Pressure with Manifold Gauge Set >> Inspection >> Low-Pressure Side Is Low

Low-Pressure Side Is Low

  1. CHECK REFRIGERANT LEAKS  .

    Check the refrigerant for leaks. Ref. to AIR CONDITIONER>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.

  2. FILL PROPER AMOUNT OF REFRIGERANT  .

    Drain all refrigerant, and refill proper amount of refrigerant.

    Is refrigerant pressure within the standard value?

    Yes:  Refrigerant pressure is normal.

    No:  Go to  3.

  3. REPLACE EXPANSION VALVE  .

    Replace the expansion valve. Ref. to AIR CONDITIONER>EXPANSION VALVE .

    Is refrigerant pressure within the standard value?

    Yes:  Refrigerant pressure is normal.

    No:  Inspect the compressor. Ref. to AIR CONDITIONER (DIAGNOSTICS)>DIAGNOSTICS WITH PHENOMENON>INSPECTION>COLD AIR DOES NOT COME OUT EVEN WHEN THE A/C BUTTON IS PRESSED; THE GLASS CANNOT BE DEFOGGED. (COMPRESSOR DOES NOT OPERATE.)

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