Failure: the suction pressure is too high reasons: 1, 2 refrigerant excess heat load is too large 3, expansion valve 4 improper, improperly installed thermal package 5, 6 compressor displacement reduction, oil separator oil return malfunction failure Remedy: 1, 2 release excess refrigerant, adjust the load 3, 4 properly adjusted, re-bandaging 5, check valves chiller maintenance, repair or replacement of 6, check the oil return repaired or manual fault: Compressor stuck reasons: 1, 2 lubricant impurities dirt, oil pump pipeline blockage, the cylinder starvation live Fonseca died three, main gear pump crank the handle to insert the pin is broken, causing the oil off the oil system troubleshooting methods: 1, replaced with new lubricating oil 2, line 3 pump overhaul, repair and replacement of the main gear shaft pump air conditioning maintenance | Hongmei maintenance | Snow Dragon refrigeration (View) provided by the Dongguan City-long Refrigeration Electrical and Mechanical Equipment Engineering Co., Ltd .. Dongguan City-long Refrigeration Electrical Equipment Engineering Co., Ltd. (www.dgxuelong.com) is a professional "sales, installation, maintenance, electrical and mechanical equipment (excluding Holds for repair of electrical equipment), refrigeration equipment," the company. Since its inception, we adhere to the "good faith, sound management" approach, the courage to participate in healthy competition in the market, so that the "Hung Fung card" brand has a good reputation. We adhere to the "service first, customers first" principle, so-long cooling won the trust of customers all of the heat exchanger, refrigeration and air conditioning equipment, and establish a good corporate image. Special Note: This information is for reference pictures and information, please contact us to obtain the most accurate information, thank you!