Air conditioning compression opportunity to stop what happened?
The air conditioner will stop running at the set temperature, etc., when the temperature exceeds this temperature, the compression opportunity will start again.If the compressor is not normal shutdown may be overheating protection off high voltage protection overcurrent protection off or sensor failure, need to check the capacitor and the piping system, such as condenser fan system inside and outside pressure, determine the performance of a lot less fluorine and good leakage switch and sensor etc., it is recommended to find a professional check to know what reason by.
Compressor protection may have the following reasons:1 compressor overheating:The compressor is cooled by refrigerant. The possible causes are less refrigerant and poor cooling of the compressor.May be blocked, impurities or ice jam, or leakage of refrigerant.2 、 compressor high voltage protection:High voltage protection, from the point of view of the system, is poor condensation.Maybe the heat exchanger is too dirty, the fan doesn't turn, or the heat exchanger is badly ventilated.3 、 compressor low voltage protection:The refrigerant is less, the compressor suction volume is small, the exhaust gas pressure will be low.Poor indoor evaporation, liquid refrigerant can not be completely evaporated, resulting in low back pressure will be low, this is not common.4, compressor lubrication bad (central air conditioning)Compressor return oil is not good, may be caused by compressor oil hole plug, oil return capillary plug and low-pressure tank back oil hole plug, etc., oil can not return to compressor.In addition, the indoor poor evaporation, liquid refrigerant can not completely evaporate, liquid refrigerant will dilute the refrigerant oil, resulting in poor lubrication of the compressor. (indoor units, electronic expansion valve bad, not unified power supply will produce this fault).In addition, the system may be too long, the gap is too large, often small load operation, will cause the compressor often start and stop, will also lead to poor oil return system.5, compressor liquid hammerPoor indoor evaporation, liquid refrigerant can not be completely evaporated, back to the compressor, the vortex disk smashed.
Compressor protection shutdown several of the most common situations are:1, the compressor capacitor aging damage, capacity decay, resulting in the compressor can not normally start, or start running after a period of time, the compressor running current is too large, overheating, internal protection shutdown.Phenomenon: compressor normal operation, refrigeration 10~20 minutes after the protection of downtime.2, the refrigeration system piping of frozen oil is seriously insufficient, resulting in compressor operation after a period of time overheating protection shutdownPhenomenon: compressor normal operation, refrigeration 10~20 minutes after the protection of downtime.3, the refrigeration system refrigerant pipeline is insufficient, cause the compressor to appear too high exhaust temperature shutdown protection.Phenomenon: compressor running normally for several minutes, protective stop.When the air conditioner is abnormal and causes the compressor to stop, the first 1, 3 and two should be used to analyze the reasons.
