If the pressure of the new refrigerant is normal, it is not cool

1. The problem description itself has problems
since the air conditioner operates "normally", there will be no problem. The key is that the operation of the air conditioner is abnormal. The normal said is only that the motor of indoor and outdoor fan is running, and the compressor is not running at all
when the air conditioner has this kind of problem, the fault code is usually displayed. It is recommended to check the fault code table in the installation and operation manual attached by the manufacturer to determine the general type of fault
if you can't handle it yourself, you should report to the air conditioner manufacturer for after-sales repair and ask the maintenance personnel to check and repair it.

2. There must be a leak in your air conditioning system

3. I drive a 2.0T air conditioner for 14 years forest people. The air conditioner condition is the same as yours. The last check is that the pipe is leaking.

4. Short circuit the pressure switch directly
however, after the pressure switch is short circuited, the pressure switch will lose its e system protection function. If the refrigerant leakage occurs again later, the system can not be normally protected when the low pressure is very low or the high pressure is very high, which is easy to cause more trouble
therefore, it is suggested to replace the damaged pressure switch with a new one as far as possible, rather than simply short circuit the signal line of the pressure switch.

6. When the refrigeration effect of air conditioning is not good, the common phenomena and solutions are as follows:
(1) the external environment temperature is high, the indoor personnel are more, the air conditioner works at full load, the wind from the outlet is cold, but the room temperature can not drop, which is not the fault. When the ambient temperature is higher than 33 ℃, the infiltration heat increases, which increases the cooling load of the air conditioner; If there are many people in the room, for example, when the cooling capacity of a 20 square meter room is 2500W, if there are 10 people sitting still in the room. The heat output of each person is about 120W, and the total heat output of 10 people is 1200W. Half of the cooling capacity of the air conditioner is used. At this time, the cooling capacity of the air conditioner is not enough, and the room temperature can not drop down. This is a normal phenomenon. It can't be said that the air conditioner doesn't work

(2) the power supply voltage is too low, which causes the phenomenon that the air conditioner is not easy to start, stops after starting or the fuse blows. This is not a fault. As long as the power supply is checked, it is because the power grid voltage is too low. The user should install a power supply voltage regulator to make the voltage reach 220 V and make the air conditioner work normally

(3) when it is turned on the forced cooling gear, the room temperature can not drop down, and the air volume at the air outlet is not large, which is e to the excessive ash accumulation limit of the air filter, blocking the air circulation, so that the cooling capacity in the machine can not be brought out by the flowing air in time, resulting in insufficient cooling capacity. This is not a fault, as long as you remove the filter to clean, you can return to normal

(4) if the temperature controller is not adjusted properly, it does not play the maximum function of refrigeration, so that the room can not be cooled down, it can be solved after adjusting the temperature controller

(5) the cooling and heating effect of heat pump air conditioner is not ideal in cold winter, which is also a normal phenomenon. For the heat pump air conditioner without automatic defrosting, its minimum ambient temperature is 5 ℃ above zero. If it is lower than this temperature, it will not proce heat or the effect is very poor. This is because the frost on the external heat exchanger blocks the air flow and can no longer absorb heat from the outside; For the heat pump air conditioner with automatic defrosting, its minimum ambient temperature is - 5 ℃, below which it can not heat effectively

(7) poor installation position of air conditioner will also lead to uneven indoor temperature or poor cooling effect, so it is necessary to readjust the installation position of air conditioner.

7. Turn on the air conditioner and check whether there is sound on the hang up outside. If there is no sound, the capacitor is broken.

8. What pressure do you mean, low pressure or high pressure? Is it the high pressure of the compressor in normal operation? If the high pressure is normal when the compressor is running, it will be cooled. If the compressor coil does not close, but the belt pulley is moving, what you see is the low pressure, of course, there is no refrigeration, and the pressure is enough. You'd better measure the pressure of high and low pressure at the same time. When the compressor coil is closed, check whether the low pressure gauge is falling and the high pressure gauge is rising? If so, it means that the compressor operates normally. According to different refrigerants, see if the refrigerant is enough. If not, it is not cold.

9. First of all, if the refrigerant is added too much, the refrigeration performance will decline, and the compressor load will lead to serious heating, including the condenser, the evaporator in the refrigerator frosting is too thick and uneven, which will do great damage to the compressor
if the refrigeration liquid of the refrigerator is missing, it indicates that the system pipeline is damaged and leaking. It is necessary to find the damaged leakage point to stop the leakage, and then vacuum and add fluorine.

10. This needs to be checked again. If the refrigerant is insufficient, there must be a leak in the air conditioning refrigeration system. Find out, or the refrigerant will be useless.