What are the reasons for the Volvo S90 air conditioning not cooling?
3 Answers
The reasons for the Volvo S90 air conditioning not cooling are excessive refrigerant causing insufficient cooling, or impurities in the refrigerant and refrigeration oil leading to micro-clogging and reduced cooling capacity. Below are detailed explanations and solutions: 1. Excessive refrigerant causing insufficient cooling: Solution: Slowly release some refrigerant from the low-pressure side service port of the air conditioning system. 2. Impurities in the refrigerant and refrigeration oil causing micro-clogging and reduced cooling capacity: Solution: When servicing the air conditioning, selecting qualified refrigerant is crucial, especially avoiding those "three-day" products.
I've been repairing cars for over a decade and have seen many Volvo S90 air conditioning cooling issues. The most common problem is insufficient refrigerant, which may indicate leaks in the system that require professional tools to detect. Compressor failures are also quite frequent - that's the key pump component, and if the belt is loose or the motor fails, it stops working. Another common issue is severely clogged filters where excessive dust blocks airflow. Additionally, electrical components like blown fuses or faulty relays can cause problems. My suggestion is to first check the filter yourself by opening the cover and cleaning it. If that doesn't work, visit an authorized repair shop immediately - they can check refrigerant levels and perform pressure tests. Don't delay as repairs get more expensive over time. Regular air conditioning maintenance every six months can significantly reduce these headaches.
My S90 has been running for five years. Last summer, the air conditioning suddenly stopped cooling. After a lot of effort, I figured out that the filter was too dirty and blocked the vents. It worked much better after cleaning it. Another time, a fuse blew, which was in that small box in the engine compartment. If the refrigerant leaks completely, it won't work either, and you'll need to find a shop to refill it. If the electronic control module has issues, it's even more troublesome as it affects the overall operation. I recommend handling minor checks yourself, but don't force complex issues. Driving in hot weather can be dangerous, so get it fixed promptly—safety first. Regularly replacing the filter is a good habit.
