This problem is the most common, and the lack of fluorine in air conditioners is the key.
Touch the trachea before starting the machine and judge by the temperature.
If the internal machine is cold, the fan speed may be low.
Inner tube scale and dustproof, clean or replace.
The return air temperature is not cold, and then touch the intake air to judge.
The inhaled air is cold and cold. Try again with fluoride.
If the frost dissipates slowly, fluoride deficiency must be a good decision.
It is not difficult to see the aging of the press, and insufficient exhaust is the key point.
Four-way gas exchange is also common, which can be judged by fluorine mining.
The high-pressure scale must be seen. Dirt will slow down the cooling speed.
Precautions for air conditioning maintenance:
1. First, check whether the air conditioner works normally, including the indoor unit and the outdoor unit, especially the compressor of the outdoor unit. As long as one of them is not working properly, it is necessary to ask a professional master to come to the door for maintenance.
2. Then check the filter screen of the air conditioner. If the air conditioner can be started normally, but it can't get cold air, it is likely that there is too much dust in the filter. A better way is to spray it with that special filter cleaner.
3. The air conditioner can work normally without the above two problems, so check the working condition of the air conditioner fan. If the fan air volume is small, it may be that the fan motor is old and needs to be replaced with a new fan motor.
4. Check whether the refrigerant is insufficient, which is called freon. If it is not enough, add freon. At the same time, check whether there is air leakage in the cold circulation system. If there is air leakage, it must be filled.
5. If the air conditioner works normally, everything else is fine, but there is no air conditioner in the room, and the air outlet of the air conditioner is only air conditioner, which may be because the horsepower of the air conditioner is too small and the room space is too large, so it will be better to change it to a higher horsepower air conditioner.