my Porsche 911 992 (2019-Present) AC is blowing warm air, what could be wrong?

Solution

1. Preparation

• Gather tools and parts necessary for the repair.
• Disconnect the vehicle battery to ensure safety.
• Allow the engine to cool before starting work on the AC system.

2. Check and Recharge Refrigerant

• Sub-steps:
  1. Attach the manifold gauge set to the AC service ports (low and high side).
  2. Read the pressure levels; if low, proceed to recharge.
  3. Vacuum the AC system with a vacuum pump for at least 30 minutes to remove moisture.
  4. Recharge the system with the appropriate type and amount of refrigerant (usually R-134a or R-1234yf, refer to the owner's manual).
  5. Monitor pressures to ensure they are within manufacturer specifications.

3. Inspect and Replace AC Components

• Sub-steps:
  1. Inspect the AC compressor for cracks or damage.
  2. If the compressor is faulty, remove it by disconnecting the electrical connector and the refrigerant lines (ensure proper recovery of refrigerant).
  3. Install the new compressor using the manufacturer’s torque specifications for the bolts.
  4. Replace any damaged seals or O-rings during installation.

4. Test the AC System

• Sub-steps:
  1. Reconnect the battery and start the vehicle.
  2. Set the AC to maximum cool and observe the compressor operation.
  3. Check for cold air flow from the vents and monitor system pressures again.