College】 【weak common household air-conditioning system problems --- Power By Four weak home network 【China】..

<br> <BR> common air-conditioning system problems can be broadly classified into four categories, namely: noise, lack of refrigeration, the wind in the wrong direction and smell. .The following instructions for each of these phenomena and causes. .<BR> <BR> (A) noise <BR> <BR> generally refers to the air-conditioning, mechanical relative motion of different sounds. .<BR> <BR> 1. Compressor equipment sound - when using the air when the compressor under normal circumstances, only in its electromagnetic clutch engagement or separation of the moment have a "card" is heard, to be very quiet during operation. .If running the "Long, Long" sound, the compressor may represent a lack of refrigeration oil in the pipeline that have been worn out. .<BR> <BR> Approach - generally only re-compressor of the new ones. .<BR> <BR> 2. Belt noise - the compressor drive belt is usually insufficient tightness of joints in the compressor skid load generated after sharp hissing sound. .<BR> <BR> Approach - can be tightened or replaced by a new drive belt to improve. .<BR> <BR> 3. Fan noise - the fan referred to here are two: one refers to the rear tank to assist the auxiliary refrigerant cooling fan (small fans); other means conveying air blower. .If they are the motor bearing wear, in the rotating speed increases and will increase with noise. .<BR> <BR> Approach - replacing the fan or blower bearing lubrication. .<BR> <BR> 4. Wind and hot water valve - the control panel button when you adjust the temperature, the control of the engine cooling water into the heat exchanger hot water valve will move; when you adjust the wind angle position, the control .a replica of the wind will move the valve. .These components may be some action the sound. .If your air conditioning system is electronic constant temperature control type, then this type of noise can also occur when the engine is not started, the center console that is common within the abnormal sound. .<BR> <BR> Approach - if not serious, do not cares; Otherwise, you can connect the computer to the 4S requires software with a 5051 or 5052 related to re-initialize and set the motor voltage. .<BR> <BR> (B) the lack of refrigeration <BR> <BR> 1. Refrigerant is not enough - refrigerant heat absorbing medium, if the refrigerant in the pipeline for long-lost filling, piping leaks, mixed with air and so cause .System refrigerant volume is not enough, it will cause a cooling shortage. .In the use of air from the transparent window on the tank check the amount of refrigerant within the pipe, if the window to see a lot of bubbles to the amount of refrigerant that is not enough. .In addition, the refrigerant if the over-filling can lead to problems of inadequate refrigeration, but also increase the possibility of pipeline leaks. .<BR> <BR> Approach - to add or vacuum leak detection, and raise standards in the repair and re-pressure refrigerant liquid (Polaris as R134a), and compressor oil. .<BR> <BR> 2. Compressor does not run - refrigerant in the line of duty cycle must depend on the delivery of the compressor, the refrigerant if the compressor due to abnormal pressure, line fault, the temperature sensor is damaged or destroyed while the compressor magnetic clutch .bonding can not be run, then the cooling will be insufficient. .<BR> <BR> Approach - replacing the temperature sensor or electromagnetic clutch. .<BR> <BR> 3. Condenser cooling poor - refrigerant compressed by the compressor to high temperature and high pressure gas, to rely on the cooling condenser and expansion valve of the buck before it can become low pressure and temperature of the liquid refrigerant, and finally to evaporation .absorbs heat and evaporation compartment. .If the condenser (in front of the tank) is not good cooling effect, such as: supporting the fan is not running, the condenser heat sink dirt Obstruction, etc., will reduce the adverse liquefied coal and reduce cooling capacity. .<BR> <BR> Avoidance - when every car wash, with high pressure water from the car in front of the radiator grille aligned flush forward some wind. .<BR> <BR> If the fan does not turn, replace the small fan; necessary professional cleaning condenser. .<BR> <BR> 4. Refrigerant line blocking - This situation occurs most frequently in the reservoir or expansion valve. .<BR> <BR> Approach - both vacuum pipe cleaning and replacement of new refrigerant filling. .<BR> <BR> 5. The air volume is too small - a lot of the problem of insufficient cooling is a result of the air filter to block the wind blow outlet so that the driver was too small before cooling enough. .Now more and more advanced equipment imported cars carbon micro-filter, it can indeed block the dust and the smell outside the car, but this feature soon in high pollution areas blocked. .In addition, many drivers like to use the air conditioning is always adjusted to the coldest of cold degrees, the wind speed to maximum, until the wind is too cold or too noisy'll turn a small amount of wind, and rarely then <BR> <BR> undercooling .thermostat, so it only to control the temperature of air flow. .This will result in a very cold and the export situation is not cold inside, and easily lead to release of air blown into the evaporator frost and fog icing phenomenon. .<BR> <BR> Approach - replacing air conditioning Pollen filter. .Generally set at 21 degrees to the temperature, the use of AOTU mode. .<BR> <BR> 6. Mixed with Heating - because modern cars have air-conditioning system with air-conditioning and heating, if needed because of cold and warm air in the case of failure to reconcile board when mixed can cause excessive heating cooling enough. .This situation can be judged from two phenomena that: First, air-conditioned car in the cold than the hot car for the cold; the second is the engine room of the refrigerant low pressure pipe (usually thicker diameter and covered with insulation material) very cold ., but not cold air. .<BR> <BR> Approach - check and replace the warm air duct distribution of pirated motor; excluded the computer control failure. .<BR> <BR> (C) the wind in the wrong direction <BR> <BR> the most common scenario is the side of the wind, no wind when climbing, defogging and poor. .Usually caused by wind or vacuum storage device valve stuck (for the storage engine to drive the direction of vacuum valves) caused by pipeline leakage. .Materials such problems cost a little quite time consuming. .<BR> <BR> (D) odor <BR> <BR> often a period of time when it rains or not using air conditioning, open air will have an odor smell, the reason is the system damp mildew. .<BR> <BR> Approach - heat, air conditioning when the car easily the strongest maximum temperature of hot air, the fierce wind blowing in every 3 to 5 minutes. .<BR> <BR>.