Bus Air Conditioning Supplier explains why bus air conditioning systems often have poor cooling performance.
In tropical regions, bus air conditioning is primarily used during the summer. After such a long period of inactivity, it’s essential to perform a thorough inspection; otherwise, the cooling effect will be poor.
Why is the cooling performance of bus air conditioning poor?
Lack of refrigerant
This is normal. While it’s true that the Bus Air Conditioning won’t completely stop cooling, its effectiveness will be poor, but this situation is relatively rare. Refrigerant is not a consumable item; unless the vehicle has been involved in any serious rear-end collision or the air conditioning pipes and other accessories have been removed, affecting the sealing performance, the refrigerant generally won’t be consumed on its own.
Air conditioning filter
Over time, the filter becomes dirty, and the dust and lint on it can obstruct the airflow, naturally making the airflow feel weaker and less effective.
Air conditioning filters are often simply called air filters. If they aren’t replaced for a long time, besides the reduced airflow, since their primary function is to filter dirt from the air, they are prone to mold growth and the breeding of various viruses and bacteria over time, making the air inside the vehicle less healthy and potentially leading to respiratory illnesses.
Dirty Condenser
If you’ve already replaced the air filter but the air conditioning isn’t cooling well, it might be due to a dirty condenser fin.
We can start with a process of elimination. The condenser fins are located inside the front grille. If your car isn’t new, has been driven for a while, and you don’t wash it frequently, check if there’s a lot of dust accumulated on the condenser fins. You can mention this to the car wash attendant and ask them to rinse it with water. However, remember not to use a high-pressure water gun, as excessive water pressure may damage the condenser fins. If possible, have the condenser professionally cleaned. The correct procedure is to first use a high-pressure air gun to blow the air outwards, then rinse with clean water.
Air Conditioning Compressor
As mentioned earlier, if the cooling effect is poor, it might still be cooling, but if you turn on the air conditioner and feel no coolness at all, then the air conditioner isn’t cooling. This is usually a problem with the air conditioning compressor, but it doesn’t necessarily mean the compressor is broken. Sometimes, poor contact or aging wiring can also cause the compressor to stop working.
We can start with a self-check. Open the front hood and locate the high-pressure pipe marked “H” and the low-pressure pipe marked “L”. If the compressor is working normally, the higher the speed, the colder the low-pressure pipe should be. If you touch it and there’s no noticeable temperature change, the compressor may not be working. You can take it to a repair shop to have a mechanic check if the fuse or relay is worn or has poor contact; replacing it should solve the problem.
Bus Air Conditioning Supplier reminds owners and bus companies in tropical regions that, for passenger comfort, they should conduct self-checks of the bus air conditioning’s cooling performance. Learning these techniques will provide passengers with a comfortable riding environment.
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