why does my Volvo XC90's AC blow hot air on one side only

Solution

1. Preparation

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

2. Inspect and Replace Cabin Air Filter

• Tools Required: Flathead screwdriver, replacement cabin air filter.
• Steps:
  1. Locate the cabin air filter housing, usually found behind the glove compartment.
  2. Open the glove compartment and remove any contents.
  3. Unscrew or unclip the glove compartment to gain access to the filter housing.
  4. Remove the old cabin air filter and inspect for blockages or dirt.
  5. Insert the new cabin air filter, ensuring it is oriented correctly according to airflow direction.
  6. Reassemble the glove compartment.

3. Check and Replace Blend Door Actuator

• Tools Required: Socket set, torque wrench, replacement blend door actuator.
• Steps:
  1. Remove the dashboard panel or center console to access the HVAC unit.
  2. Identify the blend door actuator (typically located near the HVAC unit) and disconnect the electrical connector.
  3. Remove the screws or bolts securing the actuator and take it out.
  4. Install the new actuator, ensuring it aligns properly with the blend door.
  5. Reconnect the electrical connector and secure the actuator with screws or bolts.
  6. Reassemble the dashboard or center console.

4. Refill Refrigerant (if necessary)

• Tools Required: Refrigerant refill kit, pressure gauge.
• Steps:
  1. Attach the pressure gauge to the low-pressure side service port of the AC system.
  2. Check the pressure readings against the manufacturer's specifications.
  3. If low, connect the refrigerant refill kit and add the appropriate type and amount of refrigerant.
  4. Disconnect the refill kit and recheck pressure to ensure it is within the correct range.