The cooling effect of the new Science split-type air conditioner is poor. Solution: Release the refrigerant, re-evacuate and add the agent, then the fault is eliminated. Data source: Beijing New Science Air Conditioning After-sales Service Phone http://blog.tianya.cn/blogger/blog_main.asp?BlogID=3637766. Fault phenomenon: The machine can cool when it is turned on, but the cooling effect is poor. Analysis and maintenance: The main causes of this fault are as follows, Beijing New Science Air Conditioning After-sales Service Hotline. (1) Leakage or excessive refrigerant, causing poor cooling effect. (2) Too much dust on the filter net or condenser, causing poor cooling effect. (3) During installation, the air in the pipe was not completely discharged or the high-pressure and low-pressure valves were not fully opened. (4) Dirt blockage or pipe bending deformation in the pipeline, causing blockage. (5) The pressure of the compressor is too small, causing the refrigerant to fail to vaporize or liquefy sufficiently. Check all the above factors and find no leakage marks on the evaporator, connecting steel pipe, condenser high-pressure switch, valve and each connection. Try to use a clamp ammeter to measure the total current, and compare it with the rated current marked on the nameplate. When the current value is greater than the rated value, it indicates that the air in the pipeline has not been completely evacuated.