Analyzing the basic method of household air-conditioner common faults are: see, hear, touch, test, analyze. 1, see: careful observation of the various components of the air conditioner work, focusing on observation of the three parts of the cooling system, electrical system, air system, determine whether they are working properly. 2, listen: listen to power on the sound operation of the air conditioner compressor air conditioning is normal, abnormal noise, the fan is running without noise, the noise is too big. The air conditioner in operation, under normal circumstances a slight vibration, noise smaller Xuzhou air cleaning telephone, generally 50DB less. If the vibration and noise is too large, possible causes are: 3, touch: touch the air conditioner parts feel its cold, vibrations, etc., to help determine the nature and location of the fault. 4, test: In order to accurately determine the nature and location of the fault, often use Instrument check the measurement performance parameters and status of the air conditioner. Such as the use of refrigerant leak detector to check for leaks; use a multimeter to measure the power supply voltage, the connection terminals for ground current and operating current to meet the requirements, the computer-controlled air conditioner, but also measure the potential of each of the control points is normal and so on. 5. Analysis: After the results of the inspection of several means obtained, most can only reflect some local state. Is another link between the various parts of an air conditioner, influence each other, a failure phenomenon may have a variety of reasons, but one reason may also have a variety of failures. Therefore, the local factors to conduct a comprehensive comparative analysis, in order to fully and accurately determine the nature and location of the fault. Common symptoms of central air conditioning (1), drain: refers to refrigerant leakage; electrical (wiring, body) leakage and other damage caused by the insulation. (2), block: refers to fouling and plugging the ice refrigeration system; air filter is clogged; air inlet and outlet are an obstacle blockage. (3) off: an electrical line break; fuse blown; due to overheating or excessive current overload caused by the contact is open; the cooling system pressure caused by abnormal pressure switch contact is opened and the like. (4), burn: refers to the compressor motor windings, fan motor windings, solenoid coils, relay coils and contacts, etc. are burned. (5), the card: a compressor means jammed, jammed fan, moving parts of bearings jam. (6) damage: broken finger compressor valves, piston scuffing, fan blade fracture and various parts breakage. Air conditioning and refrigeration decline for several reasons no idea Xuzhou air conditioning installation of central air conditioning renovation, craft mouth screw not tightened, causing refrigerant leakage. As long as this problem tighten the screws, and then make up the refrigerant line. Air conditioning dirty. If the air conditioner is dirty it will result in heat well inside and outside. Like this relatively easy to solve. As long as clean air will solve the problem. Air conditioning refrigerant shortage, will also affect the air conditioning and refrigeration. Since the cooling system leak participate within the system thermal cycling refrigerant (refrigerant) insufficient, resulting in decreased efficiency of heat exchange, resulting in insufficient cooling capacity phenomenon. This Just fill plus snow on it. After long-term use of air conditioning compressor aging, power increases Xuzhou conditioning installation, energy efficiency decreases, resulting in performance degradation, such problems have no good way, only the air-conditioning system for processing, change the air filter, replace the compression oil. (Note: different grades, grade compressor oil Do not mix). If not, you can only replace the compressor or buy a new air-conditioning. Air conditioning, Sheng Erda refrigeration, air conditioning, cleaning phone provided by Xuzhou Xuzhou 圣尔达 Refrigeration Electrical Services Limited. Xuzhou 圣尔达 Refrigeration Electrical Services Limited (xzktw.com) strong, credible, Xuzhou in Jiangsu Province of heat, refrigeration and air conditioning equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Sheng Erda refrigeration into the brilliant and you work for a better future!