* poor cooling effect
The reasons of poor refrigeration effect are mostly related to the dirty surface of condenser and water tank in air conditioning system. When the vehicle is used, dust, catkins and flying insects in the external environment adhere to the surfaces of the condenser and water tank.
These accessories will affect the cooling effect of condenser and engine, and the cooling fan will run at high speed, which will lead to excessive engine temperature in severe cases. It is necessary to clean the surface of condenser and water tank before using air conditioner.
* Air conditioning air volume is small.
The air output of air conditioner is small, mostly because the dust and pollen filter (commonly known as air conditioner filter) of air conditioner system is dirty. The function of air conditioning filter element is to filter the dust in the air inside and outside the car. When we use air conditioning or warm air, the air inside and outside the car will flow through the air conditioning filter element when the blower is running, and then blow out from the air outlet through the pipeline of the ventilation system.
When the vehicle is running, even if air conditioning or warm air is not used, the circulation mode is switched to external circulation, and at this time, outside air also flows through the air conditioning filter. If the air conditioner filter element is not replaced for a long time, the air output is small, and the unfiltered dust will adhere to the surface of the evaporator, resulting in poor refrigeration effect or odor. Be sure to replace the air conditioning filter in time.
* The air conditioner smells.
When vehicles use refrigeration, the surface of evaporator is wet, which will form condensed water, which is easy to breed mold and has an unpleasant smell, especially when refrigeration is just started.
Dirty air conditioning filter will breed bacteria and mold on the surface, which will not filter the air, and will also pollute the air inside the car and produce an unpleasant smell. Before using the air conditioner, clean the evaporator and check the air conditioner filter.