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

Solution

1. Preparation

• Gather tools and equipment: OBD-II scanner, refrigerant gauge, manifold gauge set, socket set, screwdriver set, vacuum pump, refrigerant, safety goggles, and gloves.
• Disconnect the vehicle battery to ensure safety while working on the AC system.

2. Recharge the AC System

1. Check Refrigerant Level
   • Connect the refrigerant gauge to the low-pressure service port.
   • Read the gauge to determine if the refrigerant is low.
2. Evacuate the AC System
   • Connect a vacuum pump to the AC system.
   • Run the pump for at least 30 minutes to remove moisture and air.
3. Recharge the System
   • Disconnect the vacuum pump and connect the refrigerant canister to the low-pressure port.
   • Open the valve on the canister and allow refrigerant to flow into the system until the desired pressure is reached (consult manufacturer specifications).

3. Replace Components (if needed)

1. Replace the Cabin Air Filter
   • Locate the cabin air filter housing, usually behind the glove compartment.
   • Remove the glove compartment to access the filter.
   • Remove the old filter and install the new one.
2. Replace the AC Compressor (if faulty)
   • Remove the drive belt from the AC compressor.
   • Disconnect electrical connectors and refrigerant lines (ensure refrigerant is recovered).
   • Unbolt the compressor from its mounting and replace it with a new unit.
   • Reassemble in reverse order.

4. Final Checks

• Reconnect the battery and start the engine.
• Activate the AC system and monitor for proper operation and temperature drop at the vents.