Skoda Octavia NFL (2020-Present) AC is blowing warm air, what could be wrong?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the battery to prevent electrical issues.

2. Recharge Refrigerant

• Tools Required: Manifold gauge set, refrigerant canister, safety goggles, gloves
• Connect the manifold gauge set to the AC service ports.
• Check the low and high-pressure readings; if low, proceed with recharging.
• Attach the refrigerant canister to the low-pressure side of the manifold gauge.
• Open the valve on the refrigerant canister slowly while the AC is running.
• Monitor the pressure readings until they reach manufacturer specifications.
• Close the valve and disconnect the manifold gauge set.

3. Inspect and Replace Components

• Tools Required: Socket set, wrench set, screwdriver set
• Inspect the AC compressor visually. If damaged or leaking, remove the compressor:
  • Disconnect electrical connectors.
  • Remove the serpentine belt from the compressor pulley.
  • Unbolt the compressor from its mounting.
  • Replace the compressor with a new unit, ensuring proper alignment.
• If the cabin air filter is dirty, remove it from the housing and replace it with a new one.

4. Electrical Component Check

• Tools Required: Multimeter
• Check the AC clutch relay and fuses for continuity. Replace any faulty components.
• Test the AC control module by verifying power and ground signals.