Why is the air volume from the air vents of the Roewe RX5 very small?
2 Answers
Specific causes and repair methods for low air volume from car air vents: 1. Blocked or leaking vents: Clean the dashboard vents if they are blocked; inspect and repair the dashboard vent ducts if there is air leakage, and replace if necessary. 2. Airflow control failure: Inspect and repair the airflow control mechanism if the airflow control motor is abnormal. 3. Blower failure: If the blower speed is low, inspect the wiring and the blower motor, and replace if necessary; replace the blower speed control module if it is abnormal. 4. Air conditioning pipeline or control module failure: If the air conditioning pipeline is frozen, replace the refrigerant according to the manufacturer's standards or replace the expansion valve; inspect the wiring of the air conditioning control module and replace the module if necessary if it is abnormal.
A few days ago when I was repairing a car, I came across a Roewe RX5 with the same issue of extremely weak AC airflow. The owner said even at maximum setting it felt like the AC wasn't on. My first thought was a clogged cabin air filter - sure enough, when we opened it up, the filter was completely blocked with leaves and dust. After replacing it, airflow recovered about 70-80% immediately. If the filter isn't the problem, then you'll need to check the blower motor. I've encountered cases where a burnt resistor caused the fan speed to stay low. Another possibility is evaporator icing - if the air intake feels ice-cold but there's no airflow, you should inspect the temperature control sensor. I suggest trying to replace the filter yourself first - it's located behind the glove box on the passenger side and costs about 20 yuan to fix. If that doesn't work, take it to a shop to check the blower circuit - don't delay and risk compressor damage from ice blockage.
