Automatically shut down when the air conditioning and refrigeration air conditioning is usually due to overheating protection cause, cause overheating protection There are many major sub-normal and abnormal Xuzhou used central air conditioning recovery, when the air conditioning is working properly in very harsh conditions, such as very high ambient temperatures refrigeration, compressor load too protective. Abnormal main system problems, such as lack of freon, and pipe blocked, the fan does not turn the other second-hand air conditioning, to determine the specific circumstances. Automatically shut down when the air conditioning refrigeration mainly: 1, built-in air conditioning electrical parts protection. Mainly air motors and compressors. Typically built on top of the compressor, is recoverable. When the temperature is too high, when turned off, the temperature is normal after recovery. 2, on the protection of air-conditioning control, generally there are several: 1) current protection, air conditioning control panel has detected press current exceeds a set value protection. 2) pressure protection, a lot of air conditioning has low pressure switch over to protect the value of protection. 3) thermal protection, air generally has a temperature sensor to protect the compressor, compressor discharge temperature is generally detected or compressor top temperature. Over protection value protection. What is DC inverter name is not rigorous. Compressor motor is called a permanent magnet rotor with DC inverter air conditioning air conditioning repair Xuzhou hand, called rotor induction AC inverter air conditioner, but they are both the stator frequency for the three-phase AC variable. DC-DC speed only. Frequency is the exchange of a single finger. Is zero because the DC frequency can not be changed. To change the frequency of the AC. In industry, the AC inverter efficiency is much better than the DC voltage control, which is the point with the air-conditioning industry is completely different. The main reason is conditioned mainly in the face of home users, or non-professional users, so rely on the concept flicker, so, various conflicting mess on the name and the concept of endless. The industrial sector, in the face of all peers or experts, there is no concept of such a simple error level. If the manufacturers come up with this error, not only can not flicker professional customers, but the customer that the manufacturer level difference to the point where even the concepts are unclear about the final but lost orders. So popular is this wrong man. Teach you how to diagnose air conditioning is not the lack of fluoride air conditioning freon refrigeration and heat are needed to help, so once the lack of freon, air conditioning will be a series of reactions, such as the cooling effect decreased significantly. Serious or even air conditioning compressor does not start automatically protected. So the lack of fluoride for an air conditioner is a very serious problem, here are a few ways to judge conditioning lack of fluoride. 1. The low-pressure pipe (crude pipe) dry, touch, and feel there is no ice. This is because of the lack of freon, the evaporator which reduces the boiling point of the refrigerant, the refrigerant temperature of the low-pressure pipe in the valve increases. 2. The high-pressure pipe frosting. The reason is that the pressure drop in the tube, boiling point lower, so that the high-pressure pipe temperature is below freezing, Xuzhou hand air conditioning rental, air, water turns into ice. 3. Turn on the machine panel, remove the filter, naturally you can see above the evaporator frost. If frosting is less area is small, indicating lack of refrigerant resulting in reduced cooling capacity. The outdoor unit without thermal exhaust. The reason is lack of the refrigerant, resulting in condensing pressure and temperature decrease. 5. The machine drains, water less or not at all, no water. This is because the lack of fluoride leads to decreased cooling capacity, the condenser can not condensate. 6. From the outdoor unit charge fluoride mouth measured pressure is lower than 0.45MPa. The reason is that the refrigerant shortage, leading to the evaporation pressure drops. If only the low-pressure gas pipe valve frost, proved to be only a trace amount of lack of fluoride, the ambient temperature is too low; two valves are frost, indicating the system has secondary throttle phenomenon. Xuzhou hand air conditioning maintenance | Sheng Erda refrigeration (certified) | hand air conditioning provided by Xuzhou 圣尔达 Refrigeration Electrical Services Limited. Xuzhou Sheng Erda Refrigeration Electrical Services Limited (xzktw.com) Xuzhou, Jiangsu, heat, refrigeration and air conditioning equipment leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customers needs. Sheng Erda leader in refrigeration staff warmly welcome all inquiries negotiations to create a better future Sheng Erda refrigeration.