why does my Porsche 911 992 (2019-Present) AC blow warm air when set to cold

Solution

1. Preparation

• Gather tools: refrigerant gauge, OBD-II scanner, multimeter, basic hand tools.
• Ensure the vehicle is parked on a level surface and the engine is cool.
• Disconnect the battery to avoid electrical issues during repairs.

2. Recharge AC System

• Step 1: Connect the refrigerant gauge to the low-pressure service port.
• Step 2: Check the pressure; if low, proceed to recharge the system with the appropriate refrigerant type (R-134a or R-1234yf, depending on the model year).
• Step 3: Follow manufacturer specifications for the correct amount of refrigerant to add.
• Step 4: Disconnect the gauge and start the engine to test the AC system.

3. Inspect and Replace Compressor

• Step 1: Remove any covers obstructing access to the AC compressor.
• Step 2: Visually inspect the compressor for damage or leaks.
• Step 3: If replacement is necessary, disconnect the AC lines (use caution, as refrigerant may still be present) and electrical connectors.
• Step 4: Remove mounting bolts and replace the compressor with a new unit, ensuring all seals are replaced.
• Step 5: Reconnect AC lines and electrical connectors, then refill the refrigerant system.

4. Blend Door Actuator Replacement

• Step 1: Remove the dashboard panel or trim covering the HVAC unit to access the blend door actuator.
• Step 2: Disconnect the actuator’s electrical connector and remove mounting screws.
• Step 3: Replace with a new blend door actuator, ensuring proper alignment.
• Step 4: Reassemble the dashboard trim and reconnect the battery.