The Beijing LG Air Conditioning Repair Telephone provides analytical data.
LG air conditioning, poor cooling and heating effects.
Analysis and maintenance: The refrigeration operation after startup is normal, the indoor unit air outlet is normal, the heat exchanger is also very clean, but the temperature difference between the air inlet and outlet is very small. After running for about 5 minutes, it was found that the evaporator of the indoor unit was frosted, and it was initially determined that the system was short of fluorine. The low-pressure pressure was too low. After stopping the machine to check for leaks, oil stains were found at the low-pressure connection. After collecting the fluorine and unscrewing the joint, a fine crack was found in the bell mouth of the connecting pipe. After remaking the bell mouth, checking for leaks, drawing vacuum, and adding fluorine, the operation returned to normal.