why does my Volvo XC90 AC blow hot air when it's on

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the vehicle battery to ensure safety while working on electrical components.

2. Recover Refrigerant

• Use a refrigerant recovery machine to safely remove any remaining refrigerant from the AC system.
• Follow local regulations for refrigerant disposal.

3. Inspect and Replace Components

• AC Compressor:

  • Remove the serpentine belt using a wrench.
  • Disconnect electrical connectors and hoses from the compressor.
  • Unbolt the compressor from its mounting and replace with a new unit.

• Condenser:

  • Remove any front-end components obstructing access to the condenser.
  • Disconnect the refrigerant lines from the condenser and remove it from the vehicle.
  • Install the new condenser and reattach refrigerant lines securely.

• Cabin Air Filter:

  • Locate the cabin air filter compartment, usually behind the glove box.
  • Remove the old filter and install a new one, ensuring proper orientation.

4. Recharge the AC System

• Connect the refrigerant machine to the service ports and recharge the system with the correct type and amount of refrigerant as specified in the owner's manual.
• Ensure the system is leak-free after recharging.

5. Reconnect Battery and Test

• Reconnect the vehicle battery.
• Start the engine and turn on the AC to the maximum setting.
• Monitor the system for proper operation and cold air output.