Method for detecting four-way valve of air-conditioner

Abstract

The invention relates to air-conditioner intelligent detection technique, and discloses a method for detecting a four-way valve of an air-conditioner. The method for detecting the four-way valve of the air-conditioner can automatically detect and judge whether the four-way valve is normal or abnormal, and timely displays faults, so that convenience is provided for failure predication and after-sales repair. The method comprises the following steps: judging a work pattern when the air-conditioner is switched on; timing operation time of the air-conditioner when the air-conditioner is operated in a heating or a cooling mode; collecting present working frequency of a compressor when the operation time achieves a preset time threshold value; detecting and calculating a difference value of indoor environment temperature and indoor heat exchanger coil pipe temperature and a difference value of outdoor heat exchanger coil pipe temperature and outer environment temperature according to a specific working mode of the air-conditioner when the present working frequency of the compressor achieves a preset frequency threshold value; and judging the four-way valve is abnormal when setting conditions are met, and carrying out alarm reminding for the failure. The method for detecting the four-way valve of the air-conditioner is suitable for being used for intelligently detecting failure of the four-way valve of the air-conditioner.

Description

technical field [0001] The invention relates to an intelligent detection technology of an air conditioner, in particular to a method for detecting and judging whether the four-way valve of the air conditioner is abnormal. Background technique [0002] For the four-way valve of the air conditioner, it is used to reverse the thermal cycle of the refrigerant in the pipeline, so as to realize cooling or heating according to the user's demand instruction. If the four-way valve of the air conditioner is abnormal due to four-way valve relay failure, drive circuit failure, software failure, and four-way valve stuck, etc., the four-way valve will not be able to switch normally according to the mode requirements, resulting in abnormal working mode of the air conditioner (such as: blowing hot air when cooling, and blowing cold air when heating), which brings extremely poor subjective feelings to consumers; [0003] In the prior art, the air conditioner cannot self-test the abnormal fa...

AI Technical Summary

Problems solved by technology

If the four-way valve of the air conditioner is abnormal due to four-way valve relay failure, drive circuit failure, software failure, and four-way valve stuck, etc., the four-way valve will not be able to switch normally according to the mode requirements, resulting in abnormal working mode of the air conditioner (such as: blowing hot air when cooling, and blowing cold air when heating), which brings extremely poor subjective feelings to consumers;

[0003] In the prior art, the air conditioner cannot self-test the abnormal fault of the four-way valve. Therefore, when the fault occurs generally, the user can only ask the after-sales service personnel to repair it based on subjective feelings. Only then can the corresponding maintenance be carried out, which is more time-consuming

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