阅读说明：本技术 空调机组的故障监测方法 (Fault monitoring method of air conditioning unit ) 是由 刘峻杉 张嘉诚 于 2021-07-30 设计创作，主要内容包括：本发明涉及空调技术领域,具体提供一种空调机组的故障监测方法,旨在解决现有对空调机组中缺乏电气元件由轻微故障渐变为重大故障的预警,从而导致电气元件损坏,迫使空调机组停机的问题。为此目的,本发明通过控制空调机组按照测试命令数据组运行,并判断压缩机的实际运行参数是否在当前室内环境参数、室外环境参数对应的压缩机的标准运行参数范围内以快速的判断空调机组是否存在故障并对其预警,从而能够及时的避免空调机组由轻微故障转变为重大故障,避免空调机组损坏停机。(The invention relates to the technical field of air conditioners, and particularly provides a fault monitoring method for an air conditioning unit, aiming at solving the problems that the existing early warning for the lack of electrical elements in the air conditioning unit is changed from slight faults to major faults, so that the electrical elements are damaged, and the air conditioning unit is forced to stop. For the purpose, the air conditioning unit is controlled to operate according to the test command data set, whether the actual operation parameters of the compressor are within the standard operation parameter range of the compressor corresponding to the current indoor environment parameters and the outdoor environment parameters is judged, whether the air conditioning unit has faults or not is judged rapidly, and early warning is carried out on the faults, so that the air conditioning unit can be prevented from being changed from slight faults to major faults in time, and the air conditioning unit is prevented from being damaged and shut down.)

1. A fault monitoring method of an air conditioning unit is characterized by comprising the following steps:

controlling the air conditioning unit to operate according to the test command data set;

acquiring indoor environment parameters, outdoor environment parameters and actual operation parameters of a compressor;

searching a standard operation parameter range of the compressor corresponding to the indoor environment parameter and the outdoor environment parameter in a preset compressor standard operation parameter table according to the indoor environment parameter and the outdoor environment parameter;

judging whether the actual operation parameters are within the standard operation parameter range;

and determining whether the air conditioning unit has a fault or not based on the judgment result.

2. The method of claim 1, wherein the air conditioning unit is controlled to operate according to a test command data set in a preset fault test stage;

the fault testing stage is a preset time period after the air conditioner set is started up every set service period.

3. The method of claim 1, wherein the test command data set includes an operating frequency of the compressor, a rotational speed of the outdoor fan, a rotational speed of the indoor fan, and an opening degree of the electronic expansion valve.

4. The method of claim 1, wherein the actual operating parameter comprises at least one of a suction pressure, a discharge pressure, a suction temperature, a discharge temperature, and a suction-to-discharge pressure ratio of the compressor.

5. The method as claimed in claim 1, wherein the compressor standard operation parameter table is obtained by experiment according to the air conditioning units with the same type under different indoor environment parameters and outdoor environment parameters.

6. The method according to claim 5, wherein the following model parameters of each air conditioning unit are the same in the air conditioning units with the same model: the model of the outdoor unit, the specification and the heat exchange area of the compressor, the specification of the throttling device and the model of the indoor unit.

7. The method of claim 1, wherein the indoor environmental parameter comprises an indoor ambient temperature and the outdoor environmental parameter comprises an outdoor ambient temperature; alternatively, the first and second electrodes may be,

the indoor environment parameters comprise indoor environment temperature and humidity, and the outdoor environment parameters comprise outdoor environment temperature and humidity.

8. The method of claim 1, wherein the step of determining whether the air conditioning unit has a fault based on the result of the determination comprises:

when the actual operation parameter is not in the standard operation parameter range, judging that the air conditioning unit has a fault; alternatively, the first and second electrodes may be,

when the actual operation parameter is not in the standard operation parameter range, acquiring the accumulated duration of the actual operation parameter which is not in the standard operation parameter range, and when the accumulated duration is greater than a preset duration threshold, judging that the air conditioning unit has a fault; alternatively, the first and second electrodes may be,

and when the actual operation parameters are not in the standard operation parameter range, obtaining the actual operation parameters for multiple times according to set times, and if the actual operation parameters obtained in each time in the set times are not in the standard operation parameter range, judging that the air conditioning unit has a fault.

9. The method of claim 1, wherein the step of determining whether the air conditioning unit has a fault based on the result of the determination is followed by the step of:

when the air conditioning unit is judged to have a fault, sending a fault message to an air conditioning fault monitoring platform or a user; alternatively, the first and second electrodes may be,

and controlling the air conditioning unit to stop.

10. The method of claim 1, prior to controlling the air conditioning unit to operate in accordance with the test command data set, further comprising:

acquiring the actual service life of the air conditioning unit after the last fault monitoring;

when the actual service period is longer than the set service period, calling the model parameters of the air conditioning unit;

and searching a test command data set corresponding to the model parameters of the air conditioning unit in a database.

Technical Field

The invention relates to the technical field of air conditioners, and particularly provides a fault monitoring method for an air conditioning unit.

Background

The main function of the air conditioning unit is to adjust the temperature, humidity, cleanliness, air flow rate and other parameters of the indoor environment so as to meet the requirements of human comfort or industrial production working conditions.

The air conditioning unit is composed of an outdoor unit and an indoor unit, wherein the outdoor unit is generally provided with a compressor, an outdoor heat exchanger and an outdoor fan, and the indoor unit is generally provided with an indoor heat exchanger and an indoor fan. When the air conditioning unit operates in a refrigerating mode, the compressor discharges high-temperature and high-pressure gaseous refrigerants, the gaseous refrigerants enter the outdoor heat exchanger for condensation, then enter the indoor heat exchanger through the throttling device, at the moment, the indoor heat exchanger serves as an evaporator, the indoor fan drives indoor air to enter the indoor unit to exchange heat with the indoor heat exchanger and then blow the indoor air out, and therefore the indoor air temperature is reduced. In addition, when the air conditioning unit is in heating operation, the compressor discharges high-temperature and high-pressure gas refrigerant, the high-temperature and high-pressure gas refrigerant firstly enters the indoor heat exchanger, the indoor heat exchanger serves as a condenser to emit heat to the outside, and the indoor air temperature is increased accordingly. The air conditioning unit inevitably breaks down in the use process.

In the prior art, when the air conditioning unit is stopped due to a fault, a fault code of the air conditioning unit is correspondingly displayed on a display of the air conditioning unit, and a maintenance worker maintains the air conditioning unit according to the prompt of the fault code.

However, major faults such as damage of a compressor and burnout of an electric control device in the existing air conditioning unit are caused by that slight faults of electric elements are not removed in time to a great extent and the electric elements run for a long time under the fault condition. The existing early warning control lacks early warning for gradually changing slight faults into major faults of electric elements in the air conditioning unit, so that the electric elements are damaged, and the air conditioning unit is forced to stop.

Disclosure of Invention

The invention aims to solve the technical problems, namely, the problems that the existing air conditioning unit is lack of early warning for gradually changing slight faults into major faults of electric elements, so that the electric elements are damaged, and the air conditioning unit is forced to stop.

The invention provides a fault monitoring method of an air conditioning unit, which comprises the following steps: controlling the air conditioning unit to operate according to the test command data set; acquiring indoor environment parameters, outdoor environment parameters and actual operation parameters of a compressor; searching a standard operation parameter range of the compressor corresponding to the indoor environment parameter and the outdoor environment parameter in a preset compressor standard operation parameter table according to the indoor environment parameter and the outdoor environment parameter; judging whether the actual operation parameters are within the standard operation parameter range; and determining whether the air conditioning unit has a fault or not based on the judgment result.

As a preferred technical scheme of the method provided by the invention, the air conditioning unit is controlled to operate according to a test command data set in a preset fault test stage; the fault testing stage is a preset time period after the air conditioner set is started up every set service period.

As a preferable technical solution of the above method provided by the present invention, the test command data set includes an operating frequency of the compressor, a rotation speed of the outdoor fan, a rotation speed of the indoor fan, and an opening degree of the electronic expansion valve.

As a preferred technical solution of the above method provided by the present invention, the actual operation parameter includes at least one of a suction pressure, a discharge pressure, a suction temperature, a discharge temperature and a suction-discharge pressure ratio of the compressor.

As a preferred technical solution of the above method provided by the present invention, the standard operation parameter table of the compressor is obtained by experiments under different indoor environmental parameters and outdoor environmental parameters according to the air conditioning units with the same type.

As a preferable technical solution of the above method provided by the present invention, in the air conditioning units with the same model, the following model parameters of each air conditioning unit are the same: the model of the outdoor unit, the specification and the heat exchange area of the compressor, the specification of the throttling device and the model of the indoor unit.

As a preferable technical solution of the above method provided by the present invention, the indoor environment parameter includes an indoor environment temperature, and the outdoor environment parameter includes an outdoor environment temperature; alternatively, the first and second electrodes may be,

the indoor environment parameters comprise indoor environment temperature and humidity, and the outdoor environment parameters comprise outdoor environment temperature and humidity.

As a preferable technical solution of the above method provided by the present invention, the step of determining whether the air conditioning unit has a fault based on the result of the determination includes: when the actual operation parameter is not in the standard operation parameter range, judging that the air conditioning unit has a fault; or when the actual operation parameter is not in the standard operation parameter range, acquiring the accumulated duration of the actual operation parameter which is not in the standard operation parameter range, and when the accumulated duration is greater than a preset duration threshold, judging that the air conditioning unit has a fault; or when the actual operation parameters are not in the standard operation parameter range, obtaining the actual operation parameters for multiple times according to set times, and if the actual operation parameters obtained in each time in the set times are not in the standard operation parameter range, judging that the air conditioning unit has a fault.

As a preferable technical solution of the above method provided by the present invention, after the step of determining whether the air conditioning unit has a fault based on the result of the determination, the method further includes: when the air conditioning unit is judged to have a fault, sending a fault message to an air conditioning fault monitoring platform or a user; or controlling the air conditioning unit to stop.

As a preferable technical solution of the above method provided by the present invention, before controlling the air conditioning unit to operate according to the test command data set, the method further includes: acquiring the actual service life of the air conditioning unit after the last fault monitoring; when the actual service period is longer than the set service period, calling the model parameters of the air conditioning unit; and searching a test command data set corresponding to the model parameters of the air conditioning unit in a database.

Under the condition of adopting the technical scheme, the air conditioning unit is controlled to operate according to the test command data set, and whether the actual operation parameters of the compressor are in the standard operation parameter range of the compressor corresponding to the current indoor environment parameters and the outdoor environment parameters is judged so as to quickly judge whether the air conditioning unit has faults and give an early warning to the faults, so that the air conditioning unit can be prevented from being changed from minor faults into major faults in time, and the air conditioning unit is prevented from being damaged and shut down.

Drawings

The preferred embodiment of the fault monitoring method of the air conditioning unit according to the invention is described below with reference to the accompanying drawings, in which:

fig. 1 is a main flowchart of an execution program of the fault monitoring method of the air conditioning unit in the embodiment.

Detailed Description

Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and are not intended to limit the scope of the present invention.

It should be noted that the terms "first", "second" and "third" in the description of the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

For clearly and completely explaining the technical scheme of the embodiment, before explaining the fault monitoring method of the air conditioning unit of the embodiment, the structure and the operation principle of the air conditioning unit are briefly explained. The air conditioning unit is composed of an outdoor unit and an indoor unit, wherein the outdoor unit is generally provided with a compressor, an outdoor heat exchanger and an outdoor fan, and the indoor unit is generally provided with an indoor heat exchanger and an indoor fan. When the air conditioning unit operates in a refrigerating mode, the compressor discharges high-temperature and high-pressure gaseous refrigerants, the gaseous refrigerants enter the outdoor heat exchanger for condensation, then enter the indoor heat exchanger through the throttling device, at the moment, the indoor heat exchanger serves as an evaporator, the indoor fan drives indoor air to enter the indoor unit to exchange heat with the indoor heat exchanger and then blow the indoor air out, and therefore the indoor air temperature is reduced.

In addition, when the air conditioning unit is in heating operation, the compressor discharges high-temperature and high-pressure gas refrigerant, the high-temperature and high-pressure gas refrigerant firstly enters the indoor heat exchanger, the indoor heat exchanger serves as a condenser to emit heat to the outside, and the indoor air temperature is increased accordingly. The air conditioning unit is used for controlling, adjusting and regulating parameters such as the temperature, the humidity and the cleanliness of the indoor environment, so that people can live and work in a comfortable environment. However, a failure inevitably occurs during the use of the air conditioning unit.

In order to solve the problem that the existing air conditioning unit is lack of early warning for gradual change of a slight fault into a major fault of an electric element, so that the electric element is damaged and the air conditioning unit is forced to stop, the embodiment provides the following fault monitoring method of the air conditioning unit.

Referring to fig. 1, the method for monitoring a fault of an air conditioning unit according to the present embodiment includes:

and S1, controlling the air conditioning unit to operate according to the test command data set.

Specifically, the test command data set of the air conditioning unit may include an operating frequency of the compressor, a rotational speed of the outdoor fan, a rotational speed of the indoor fan, and an opening degree of the electronic expansion valve. It should be noted that, only the parameters in the test command data set are described by way of example, only a few of the parameters may be selected in the specific implementation, or other parameters may be combined to form a test command data set suitable for the specific application requirements.

In order to avoid collecting excessive data to interfere with the judgment of the air conditioning unit fault, the air conditioning unit is controlled to operate according to a test command data set in a preset fault test stage; the fault testing stage is a preset time period after the air conditioner set is started up every set service period, namely, the fault testing is carried out on the air conditioner set in an intermittent mode. Therefore, the air conditioning unit is tested according to the fixed service period of the air conditioning unit, and slight faults can be found timely. The detection is carried out in the preset time period after the air conditioning unit is started, so that the stability and the accuracy of the tested parameters of the air conditioning unit can be ensured.

And S2, acquiring indoor environment parameters, outdoor environment parameters and actual operation parameters of the compressor.

Illustratively, the indoor environmental parameters include an indoor ambient temperature and humidity, and the outdoor environmental parameters include an outdoor ambient temperature and humidity.

Illustratively, the actual operating parameters of the compressor may include at least one of a suction pressure, a discharge pressure, a suction temperature, a discharge temperature, and a suction-to-discharge pressure ratio of the compressor. Corresponding data are acquired by arranging a temperature sensor and a pressure sensor on an air suction port and an air exhaust port of the compressor, the operation parameters of the compressor are collected, and different actual operation parameters can be used for comparing with a standard operation parameter table of the compressor according to different working conditions.

Specifically, the exhaust pressure can be used as a main collected actual operation parameter to be compared with a corresponding standard operation parameter range of the compressor, so as to rapidly acquire whether the compressor is in failure. Of course, in order to ensure the accuracy of the fault judgment of the air conditioning unit, a plurality of actual operation parameters may be compared with the standard operation parameter range of the compressor. For example, the suction pressure, discharge pressure, suction temperature, discharge pressure ratio, and the like may be compared.

And S3, searching the standard operation parameter range of the compressor corresponding to the indoor environment parameter and the outdoor environment parameter in a preset compressor standard operation parameter table according to the indoor environment parameter and the outdoor environment parameter.

The following description will be made with respect to the establishment of the range of the standard operating parameter of the compressor.

For example, under the refrigeration working condition, the indoor environment parameter selects the indoor temperature, and the outdoor environment parameter selects the outdoor temperature; indoor temperature: 16-36 ℃; outdoor temperature: 25-45 ℃; the power supply voltage is rated voltage; setting the indoor temperature to 36 ℃ and the outdoor temperature to 45 ℃, and starting up and running in a refrigeration mode; every half hour, reducing the indoor set temperature and the outdoor set temperature by 1 ℃ until the indoor set temperature is reduced to 16 ℃, and reducing the outdoor temperature to 25 ℃, and recording the operation parameters of the compressor in each set temperature state in the process of adjusting the indoor set temperature from 36-16 ℃ and the outdoor temperature from 45-25 ℃.

Of course, for the heating condition, the indoor temperature is: 2-28 ℃; outdoor temperature: 27 to-25 ℃; the power supply voltage is rated voltage; setting the indoor temperature to 28 ℃ and the outdoor temperature to 27 ℃, and starting up and running in a heating mode; every half hour, reducing the indoor set temperature and the outdoor set temperature by 1 ℃ until the indoor set temperature is reduced to 2 ℃, and reducing the outdoor temperature to-25 ℃, and recording the operation parameters of the compressor in each set temperature state in the process of adjusting the indoor set temperature from 28-2 ℃ and the outdoor temperature from 27 ℃ to-25 ℃.

Wherein, in the test of the indoor ambient temperature and humidity, the outdoor ambient temperature and humidity, the test can be performed by respectively taking the indoor ambient temperature, the outdoor ambient temperature, the indoor ambient humidity and the outdoor ambient humidity as variables, for example, in the cooling mode, the indoor ambient humidity and the outdoor ambient humidity are set as constants, the indoor ambient temperature and the outdoor ambient temperature are set as independent variables, the operating parameters of the compressor under a certain constant working condition of the indoor ambient humidity and the outdoor ambient humidity are measured by changing the indoor ambient temperature and the outdoor ambient temperature according to the set values, then the indoor ambient temperature and the outdoor ambient temperature are adjusted to be another constant, the operating parameters of the compressor under another working condition of the indoor ambient humidity and the indoor ambient humidity are measured by changing the indoor ambient temperature and the outdoor ambient temperature according to the set values, and repeating the steps until all the indoor environment humidity and the outdoor environment humidity under the refrigeration mode and the corresponding compressor operation parameters of the indoor environment temperature and the outdoor environment temperature are obtained.

Therefore, the normal allowable fluctuation range of the compressor operation parameters under specific working conditions is determined according to the operation parameters of the compressor obtained through testing, and the standard operation parameter table of the compressor can be obtained. The compressor standard operation parameter table is obtained through experiments under different indoor environment parameters and outdoor environment parameters according to air conditioning units with the same type. Therefore, the multiple groups of air conditioning units are tested through different indoor environment parameters and outdoor environment parameters, the standard operation parameter range of the compressor can be rapidly obtained, and the standard operation parameter table of the compressor is made.

As a preferred implementation of the above method provided in this embodiment, in the air conditioning units with the same model, the following model parameters of each air conditioning unit are the same: the model of the outdoor unit, the specification and the heat exchange area of the compressor, the specification of the throttling device and the model of the indoor unit. Therefore, the refrigerating or heating capacity of the air conditioning units with the same model can be ensured to be the same, so that the error of obtaining the corresponding compressor standard operation parameter is small, and the manufactured compressor standard operation parameter table is more accurate.

It will be appreciated that the above selections of indoor and outdoor temperatures are illustrative and that other values may be used in other embodiments.

And S4, judging whether the actual operation parameter is in the standard operation parameter range.

And S5, determining whether the air conditioning unit has a fault or not based on the judgment result.

Specifically, in step S5, when determining whether the air conditioning unit has a fault, it may be determined that the air conditioning unit has a fault when the actual operating parameter is not within the standard operating parameter range.

As shown in fig. 1, as a preferred implementation of the foregoing method provided in this embodiment, step S5 may further include: and when the actual operation parameter is not in the standard operation parameter range, acquiring the accumulated duration of the actual operation parameter which is not in the standard operation parameter range, and when the accumulated duration is greater than a preset duration threshold, judging that the air conditioning unit has a fault.

Specifically, the fact that the actual operation parameter is not within the standard operation parameter range may be caused by a change in an indoor environment parameter, for example, a door is opened, a window is opened, and the indoor environment parameter fluctuates, and the actual operation parameter of the compressor of the air conditioning unit is deviated from the standard operation parameter table of the compressor at this time.

In the fault monitoring method for the air conditioning unit provided by the embodiment of the invention, the air conditioning unit is controlled to operate according to the test command data set, and whether the actual operation parameters of the compressor are within the standard operation parameter ranges of the compressor corresponding to the current indoor environment parameters and the outdoor environment parameters is judged so as to quickly judge whether the air conditioning unit has faults and give an early warning to the faults, so that the air conditioning unit can be prevented from being changed from slight faults to major faults in time, and the air conditioning unit is prevented from being damaged and stopped.

Of course, the step of determining whether the air conditioning unit has a fault based on the result of the determination may also classify the severity of the fault of the air conditioning unit by the accumulated duration of the air conditioning unit that is not within the standard operating parameter range.

Specifically, the accumulated duration is divided into a plurality of stages, namely a first accumulated duration, a second accumulated duration, a third accumulated duration and a fourth accumulated duration, and when the accumulated duration of the faults of the air conditioning unit is greater than the first accumulated duration and less than the second accumulated duration, an early warning signal is sent out and the fault type is sent to a client; when the accumulated time of the faults of the air conditioning unit is longer than the second accumulated duration and shorter than the third accumulated duration, sending an alarm signal and sending the fault type to a client; when the accumulated time of the faults of the air conditioning unit is longer than the third accumulated duration and shorter than the fourth accumulated duration, sending a warning signal, sending the fault type to a client, and reducing the frequency of the compressor to perform self-protection; and when the accumulated time of the faults of the air conditioning unit is longer than the fourth accumulated duration, sending a shutdown signal and sending the fault type to the client.

Of course, when the cumulative time of the air conditioning unit fault is greater than the second cumulative duration and less than the third cumulative duration, an automatic fine tuning process of the air conditioning unit may be further set, and the actual operating parameters of the compressor may be adjusted to return to the range of the compressor standard operating parameters by newly setting preset parameters according to the indoor environmental parameters, the outdoor environmental parameters, and the corresponding compressor standard operating parameters, for example, by fine tuning the power of the compressor, the rotation speed of the indoor fan or the outdoor fan, the valve opening of the throttle device, and the like.

In addition, when the accumulated time of the faults of the air conditioning unit is greater than the fourth accumulated duration, after the stop signal is sent, the method also comprises a process of judging the faults of the air conditioning unit again, if the first accumulated duration passes, the air conditioning unit can be restarted, at the moment, the accumulated time of the faults of the air conditioning unit is counted again, and if the newly recorded accumulated time of the faults of the air conditioning unit still exists and is greater than half of the first accumulated duration, the air conditioning unit is shut down.

As a preferred implementation manner of the foregoing method provided in this embodiment, in the step S5, the step of determining whether the air conditioning unit has a fault based on the result of the determination may also obtain the actual operating parameters multiple times according to the set times when the actual operating parameters are not within the standard operating parameter range, and determine that the air conditioning unit has a fault if the actual operating parameters obtained each time in the set times are not within the standard operating parameter range. Therefore, parameter mutation caused by the change of indoor and outdoor environments can be avoided through the times that actual operation parameters are not in the range of standard operation parameters, and the fault is reported in a false mode.

Of course, the severity of the failure of the air conditioning unit may also be assessed by the number of times the actual operating parameter is not within the standard operating parameter range.

Specifically, the times out of the range of the standard operation parameters may be set as a first time, a second time, a third time and a fourth time, when the actual operation parameters are out of the range of the standard operation parameters, the actual operation parameters are intermittently acquired, and when the times out of the range of the standard operation parameters of the air conditioning unit are greater than the first time and less than the second time, an early warning signal is sent out and the fault type is sent to the client; when the times that the actual operation parameters of the air conditioning unit are not in the standard operation parameter range are greater than the second times and less than the third times, sending an alarm signal and sending the fault type to a client; when the times that the actual operation parameters of the air conditioning unit are not in the standard operation parameter range are greater than the third time and less than the fourth time, sending a warning signal and sending the fault type to a client, and reducing the frequency of the compressor to perform self-protection; and when the times that the actual operation parameters of the air conditioning unit are not in the standard operation parameter range are more than the fourth time, sending a stop signal and sending the fault type to a client. Therefore, the fault severity of the air conditioning unit can be monitored more accurately, and the fault severity of the air conditioning unit can be early warned.

As a preferred implementation manner of the foregoing method provided in this embodiment, after the step of determining whether the air conditioning unit has a fault based on the result of the determination, when it is determined that the air conditioning unit has a fault, a fault message is sent to the air conditioning fault monitoring platform. The fault condition of the air conditioning unit is prompted by sending a message to the air conditioning fault monitoring platform, and then the fault is repaired in time, so that the air conditioning unit is prevented from being stopped due to fault deterioration. Meanwhile, a fault message can be sent to a user through the air conditioner fault detection platform, and the user is prompted to carry out troubleshooting and maintenance on the air conditioning unit.

As a preferred implementation manner of the foregoing method provided in this embodiment, when fault monitoring needs to be performed on air conditioning units of different models, before step S1, the method further includes: acquiring the actual service life of the air conditioning unit after the last fault monitoring; when the actual service period is longer than the set service period, calling the model parameters of the air conditioning unit; and searching a test command data set corresponding to the model parameters of the air conditioning unit in the database. So, can be quick carry out the intermittent type formula to air conditioning unit in succession and carry out fault monitoring to air conditioning unit, avoid air conditioning unit's slight trouble to develop into major failure and lead to the air conditioner to shut down.

It should be noted that although the detailed steps of the method of the present invention have been described in detail, those skilled in the art can combine, separate and change the order of the above steps without departing from the basic principle of the present invention, and the modified technical solution does not change the basic concept of the present invention and thus falls into the protection scope of the present invention.

Of course, the above alternative embodiments, and the alternative embodiments and the preferred embodiments can also be used in a cross-matching manner, so that a new embodiment is combined to be suitable for a more specific application scenario.

It should be noted that the fault monitoring method for the air conditioning unit in this embodiment may be used for the air conditioning unit itself, and may also be used in an air conditioning fault monitoring cloud platform, where the specific application objects include: the fault monitoring program of the air conditioning unit is executed by the processor to realize the fault monitoring method of the air conditioning unit. The processor may be a controller specially used for executing the method of the present invention, or may be a functional module or a functional unit of a general controller.

The Memory includes, but is not limited to, a usb disk, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, a flash Memory, a volatile Memory, a nonvolatile Memory, a serial Memory, a parallel Memory, or a register, and various media capable of storing program codes. Such well-known structures are not shown in the drawings in order to not unnecessarily obscure embodiments of the present disclosure.

The present invention may also be embodied as an apparatus or device program (e.g., PC program and PC program product) for carrying out a portion or all of the methods described herein. Such a program implementing the invention may be stored on a PC readable medium or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.

Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the claims of the present invention, any of the claimed embodiments may be used in any combination.

So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.