Fault detecting and handling method of air conditioner and subcooling pipe set thereof

Abstract

The invention provides a fault detecting and handling method of an air conditioner and a subcooling pipe set thereof. The method is characterized in that whether the time for stabilizing air exhausting temperature is less than first preset time during the heating process of the air conditioner is judged; if the time for stabilizing the air exhausting temperature is less than the first preset time,the fact that a one-way valve is subjected to a fault can be basically determined; to further determine the fault in the one-way valve, the flow rate of a refrigerant flowing through the subcooling pipe set in unit time is detected through a main control device; if the flow rate of the refrigerant is beyond a preset flow rate, the fact that the one-way valve is subjected to the fault can be determined. According to the method, whether the one-way valve is subjected to the fault is determined by detecting the time for stabilizing the air exhausting temperature of a compressor and the flow rateof the refrigerant flowing through the subcooling pipe set in unit time; the detecting process is simple and convenient; whether the one-way valve in the subcooling pipe set is subjected to the faultcan be determined without dismounting the machine; the fault can be found and handled in time; and the heating effect of the air conditioner cannot be influenced by the fault in the one-way valve.

Description

technical field [0001] The invention relates to the field of air conditioners, in particular to a fault detection and processing method for an air conditioner and its supercooled tube group. Background technique [0002] During the use of the heat pump air conditioner, sometimes the one-way valve in the subcooling tube group fails and cannot work normally. Specifically, it means that the spool of the one-way valve cannot be reset, and the refrigerant opening cannot be closed normally. As a result, the auxiliary capillary in the supercooling tube group cannot play a throttling role during heating, which hinders the heat exchange of the refrigerant, seriously affects the heating effect of the air conditioner, and greatly reduces the user experience effect. [0003] This fault generally occurs in new air conditioners, because the parts in the supercooled tube group are not sufficiently worn in, and the valve core will be jammed and cannot be reset. This problem will basically n...

AI Technical Summary

Problems solved by technology

If the fault is handled properly, the subcooling tube group will return to normal. If the fault is not discovered and repaired in time, it may cause permanent damage to the check valve.

In addition, since this fault does not affect the operation of the air conditioner and occurs at a relatively low frequency, it is not easy to find out. However, this fault does affect the performance of the air conditioner, the heating effect and the user experience. Therefore, how to detect and solve such problems early is crucial important

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