The outdoor temperature is too low
When the heat of air conditioner needs to be obtained from the outside, the outdoor temperature is low, which makes the heat dissipation of the external machine poor, and it is easy to overheat the machine, resulting in frosting and freezing.
Defrost function failed.
If the defrosting function of the external machine fails, even if the external machine accumulates ice during heating, the machine will continue to operate, further aggravating the degree of frost accumulation.
Clean external machines regularly.
Clean external machines regularly. When cleaning, first turn off the power supply of the air conditioner, gently clean the thick ice on the external machine with a soft brush, then rinse with clear water, and finally dry the water with a hair dryer.
Check the air conditioning operation.
Check whether the air conditioner works normally. In case of frost on the external machine, check whether the air conditioner is working normally first. If it is not normal, you should find air-conditioning maintenance personnel to repair it in time.
Clean the air conditioner filter regularly.
Clean the air conditioner filter regularly. Regular cleaning of air conditioning filter can prevent indoor air pollution, improve air conditioning efficiency and help reduce the possibility of icing outside the machine.
Reduce the use of air conditioning for heating.
If the outside temperature is too low, it is recommended to reduce the use of air conditioning for heating to avoid overheating and freezing of the machine. Or when using air conditioning, appropriately increase the preheating time, so that the machine gradually reaches the normal operation state.