Connection detection method and device for indoor unit and outdoor unit of air conditioner, air conditioner and medium

Abstract

The invention discloses a connection detection method and device for an indoor unit and an outdoor unit of an air conditioner, the air conditioner and a medium, the air conditioner comprises an outdoor unit controller and a conversion controller, the outdoor unit controller comprises multiple paths of outdoor unit subsystems, and the conversion controller comprises multiple paths of control subsystems. The method comprises the steps that if it is detected that N paths of outdoor unit subsystems of an outdoor unit controller are connected with N paths of control subsystems of a conversion controller, a target identifier of the outdoor unit subsystem correspondingly connected with each path of control subsystem in the N paths of control subsystems is determined, and N is a positive integer; based on the target identifier corresponding to each path of control subsystem, the wiring state between the outdoor unit controller and the conversion controller is determined, and the wiring state is correct wiring or wrong wiring; and if the wiring state is correct wiring, the connection of the indoor unit and the outdoor unit of the air conditioner is detected. According to the scheme, the connection detection efficiency of the indoor unit and the outdoor unit of the air conditioner is effectively improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of air conditioners, and particularly relates to a connection detection method and device for an indoor unit and an outdoor unit of an air conditioner, the air conditioner, and a medium. BACKGROUND

[0002] A multi-split air conditioner usually includes multiple indoor units and one outdoor unit. The multiple indoor units are connected to the outdoor unit through pipelines, and the running state of each indoor unit can be controlled by an outdoor unit controller. In some cases, the indoor unit of the multi-split air conditioner may select a third-party indoor unit, and the third-party indoor unit needs to be connected to the outdoor unit through a conversion controller. If there is a connection error between the third-party indoor unit and the conversion controller, a connection error between the conversion controller and the outdoor unit, or a connection error between a non-third-party indoor unit and the outdoor unit, the normal operation of the multi-split air conditioner can be affected. Therefore, how to quickly and effectively detect whether the multi-split air conditioner is connected correctly is a problem to be solved. SUMMARY

[0003] In view of the above technical problems in the related art, the embodiments of the present application provide a connection detection method and device for an indoor unit and an outdoor unit of an air conditioner, an air conditioner, and a medium, to quickly and effectively detect the connection state of the multi-split air conditioner.

[0004] In a first aspect, the embodiments of the present application provide a connection detection method for an indoor unit and an outdoor unit of an air conditioner. The air conditioner includes an outdoor unit controller and a conversion controller. The outdoor unit controller includes multiple outdoor unit subsystems, and the conversion controller includes multiple control subsystems. The method includes the following steps.

[0005] If it is detected that the N outdoor unit subsystems of the outdoor unit controller are connected to the N control subsystems of the conversion controller, the target identifier of the outdoor unit subsystem corresponding to each control subsystem in the N control subsystems is determined, where N is a positive integer.

[0006] Based on the target identifier corresponding to each control subsystem, the wiring state between the outdoor unit controller and the conversion controller is determined, where the wiring state is correct wiring or incorrect wiring.

[0007] If the wiring state is correct wiring, the connection of the indoor unit and the outdoor unit of the air conditioner is detected.

[0008] In some embodiments, the detection of the connection of the indoor unit and the outdoor unit of the air conditioner includes the following steps.

[0009] Based on the outdoor unit controller, the throttling device of the air conditioner is adjusted, and the temperature variation of each indoor unit after the adjustment of the throttling device is determined. The connection pipeline between each indoor unit and the outdoor unit of the air conditioner is provided with a throttling device.

[0010] Detect the connection between the indoor unit and the outdoor unit of the air conditioner based on the temperature variation of each indoor unit.

[0011] In some embodiments, the determining of the wiring state between the outdoor controller and the conversion controller based on the target identifier corresponding to each control subsystem comprises:

[0012] Determining the preset outdoor subsystem identifier corresponding to each control subsystem;

[0013] For each control subsystem, if the target identifier of the control subsystem is consistent with the preset outdoor subsystem identifier of the control subsystem, it is determined that the wiring of the control subsystem is correct.

[0014] If each control subsystem is wired correctly, the wiring state between the outdoor controller and the conversion controller is correct.

[0015] In some embodiments, the outdoor controller comprises M outdoor subsystems, M being an integer greater than or equal to 2, and the conversion controller comprises two control subsystems. The determining of the wiring state between the outdoor controller and the conversion controller based on the target identifier corresponding to each control subsystem comprises:

[0016] If the target identifier corresponding to the first control subsystem of the conversion controller is the identifier of the first outdoor subsystem of the M outdoor subsystems, and the target identifier corresponding to the second control subsystem of the conversion controller is the identifier of the last outdoor subsystem of the M outdoor subsystems, it is determined that the wiring state is correct.

[0017] In some embodiments, the outdoor controller comprises K outdoor subsystems, each outdoor subsystem being used to control a throttling device on a corresponding pipeline, K being an integer greater than or equal to N. The adjusting of the throttling device of the air conditioner by the outdoor controller and the determining of the temperature variation of each indoor unit after the adjustment of the throttling device comprises:

[0018] Determining a to-be-detected outdoor subsystem from the K outdoor subsystems and obtaining a first temperature of each indoor unit of the air conditioner at the current time, the to-be-detected outdoor subsystem being any subsystem in the K outdoor subsystems;

[0019] Controlling the to-be-detected outdoor subsystem to open the corresponding throttling device to a preset opening degree, controlling other outdoor subsystems to close the corresponding throttling device, and controlling the compressor to operate;

[0020] Obtaining a second temperature of each indoor unit after the compressor operates for a first preset time;

[0021] Determine a first temperature change of each indoor unit based on the first temperature and the second temperature of each indoor unit.

[0022] In some embodiments, the determining the to-be-detected outdoor unit subsystem from the K outdoor unit subsystems comprises:

[0023] Determining a P outdoor unit subsystem not connected to the relay controller from the K outdoor unit subsystems, P being a positive integer;

[0024] Taking each of the P outdoor unit subsystems as the to-be-detected outdoor unit subsystem in sequence.

[0025] In some embodiments, the detecting the connection between the indoor unit and the outdoor unit of the air conditioner based on the temperature change of each indoor unit comprises:

[0026] For each to-be-detected outdoor unit subsystem, if there is a target indoor unit with a first temperature change greater than or equal to a first threshold, the target indoor unit is taken as the indoor unit connected to the to-be-detected outdoor unit subsystem.

[0027] In some embodiments, the detecting the connection between the indoor unit and the outdoor unit of the air conditioner based on the temperature change of each indoor unit comprises:

[0028] If the first temperature change of each indoor unit is less than the first threshold, a third temperature of each indoor unit is obtained when the compressor runs for a second preset time length;

[0029] Determine a second temperature change of each indoor unit based on the first temperature and the third temperature of each indoor unit;

[0030] If the second temperature change of each indoor unit is less than a second threshold, it is determined that the to-be-detected outdoor unit subsystem is not connected to an indoor unit.

[0031] The second preset time length is greater than the first preset time length, and the second threshold is less than the first threshold.

[0032] In some embodiments, the method further comprises:

[0033] Determine a number of target indoor units connected to the outdoor unit controller;

[0034] If the number of target indoor units is consistent with the actual number of indoor units, it is determined that the connection between the indoor unit and the outdoor unit of the air conditioner is normal.

[0035] In some embodiments, the detecting the connection between the indoor unit and the outdoor unit of the air conditioner based on the wiring state comprises:

[0036] If the connection state is correct, each indoor unit of the air conditioner is controlled to enter a forced cooling mode or a forced heating mode.

[0037] In the forced cooling mode or the forced heating mode, the connection between the indoor unit and the outdoor unit of the air conditioner is detected.

[0038] In a second aspect, an embodiment of the present application provides a connection detection device for an indoor unit and an outdoor unit of an air conditioner, the air conditioner comprising an outdoor unit controller and a conversion controller, the outdoor unit controller comprising a plurality of outdoor unit subsystems, and the conversion controller comprising a plurality of control subsystems, and the device comprising:

[0039] A first processing module is configured to determine a target identifier of a corresponding outdoor unit subsystem of each control subsystem in the plurality of control subsystems if it is detected that the plurality of outdoor unit subsystems of the outdoor unit controller are connected to the plurality of control subsystems of the conversion controller, N being a positive integer;

[0040] A second processing module is configured to determine a connection state between the outdoor unit controller and the conversion controller based on the target identifier of each control subsystem, the connection state being correct or incorrect.

[0041] A detection module is configured to detect the connection between the indoor unit and the outdoor unit of the air conditioner if the connection state is correct.

[0042] In a third aspect, an embodiment of the present application provides an air conditioner, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, and the processor implements the steps of the connection detection method for the indoor unit and the outdoor unit of the air conditioner when executing the program.

[0043] In a fourth aspect, an embodiment of the present application provides a computer readable storage medium, which stores a computer program, and the program implements the steps of the connection detection method for the indoor unit and the outdoor unit of the air conditioner when executed by a processor.

[0044] The one or more technical solutions provided by the embodiments of the present application at least achieve the following technical effects or advantages:

[0045] The method for detecting the connection between the indoor unit and the outdoor unit of the air conditioner provided by the embodiments of the present specification, the air conditioner comprises an outdoor unit controller and a conversion controller, the outdoor unit controller comprises a plurality of outdoor unit subsystems, the conversion controller comprises a plurality of control subsystems, when detecting the connection between the indoor unit and the outdoor unit of the air conditioner, if it is detected that the N outdoor unit subsystems of the outdoor unit controller are connected with the N control subsystems of the conversion controller, the target identifier of the outdoor unit subsystem corresponding to each control subsystem in the N control subsystems is determined, N is a positive integer; based on the target identifier corresponding to each control subsystem, the wiring state between the outdoor unit controller and the conversion controller is determined, wherein the wiring state is correct wiring or incorrect wiring; if the wiring state is correct wiring, the connection between the indoor unit and the outdoor unit of the air conditioner is detected. In the present scheme, whether the subsystems of the conversion controller and the subsystems of the outdoor unit controller are correctly wired is determined through the communication between the outdoor unit controller and the conversion controller, whether the outdoor unit controller and the conversion controller are correctly wired can be quickly detected, and the connection between the indoor unit and the outdoor unit of the air conditioner is detected in the case that the outdoor unit controller and the conversion controller are correctly wired, whether the outdoor unit controller and the conversion controller and the indoor unit and the outdoor unit are correctly connected can be quickly and effectively determined, manual investigation is not required, and the efficiency of the connection detection of the indoor unit and the outdoor unit of the air conditioner is improved. BRIEF DESCRIPTION OF DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0047] Figure 1 A flowchart of a method for detecting the connection between the indoor unit and the outdoor unit of an air conditioner provided by the embodiments of the present specification is provided.

[0048] Figure 2 A connection diagram of an air conditioner provided by the embodiments of the present specification is provided.

[0049] Figure 3 A schematic diagram of a device for detecting the connection between the indoor unit and the outdoor unit of an air conditioner provided by the embodiments of the present specification is provided.

[0050] Figure 4 A schematic diagram of an air conditioner provided by the embodiments of the present specification is provided. DETAILED DESCRIPTION

[0051] The embodiment of the present specification provides a connection detection method for an indoor unit and an outdoor unit of an air conditioner, the air conditioner comprising an outdoor unit controller and a conversion controller, the outdoor unit controller comprising a plurality of outdoor unit subsystems, the conversion controller comprising a plurality of control subsystems, the method comprising: if it is detected that the N outdoor unit subsystems of the outdoor unit controller are connected with the N control subsystems of the conversion controller, determining a target identifier of a corresponding connected outdoor unit subsystem in each control subsystem of the N control subsystems, N being a positive integer; based on the target identifier corresponding to each control subsystem, determining a wiring state between the outdoor unit controller and the conversion controller, wherein the wiring state is correct wiring or incorrect wiring; and if the wiring state is correct wiring, detecting the connection of the indoor unit and the outdoor unit of the air conditioner.

[0052] The scheme in the embodiment of the present specification can determine whether the control subsystems of the conversion controller and the outdoor unit subsystems of the outdoor unit controller are correctly wired through the communication between the outdoor unit controller and the conversion controller, can quickly detect whether the outdoor unit controller and the conversion controller are correctly wired, and can detect the connection of the indoor unit and the outdoor unit of the air conditioner when the outdoor unit controller and the conversion controller are correctly wired, so that whether the outdoor unit controller and the conversion controller and the indoor unit and the outdoor unit are correctly connected can be quickly and effectively determined without manual investigation, and the efficiency of the connection detection of the indoor unit and the outdoor unit of the air conditioner is improved.

[0053] To make the objectives, technical solutions, and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0054] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device including a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products, or devices.

[0055] The embodiment of the present specification provides a connection detection method for an indoor unit and an outdoor unit of an air conditioner, the air conditioner comprising an outdoor unit controller and a conversion controller, the outdoor unit controller comprising a plurality of outdoor unit subsystems, and the conversion controller comprising a plurality of control subsystems, as shown in Figure 1 The embodiment of the present specification provides a flow chart of a connection detection method for an indoor unit and an outdoor unit of an air conditioner, which comprises the following steps:

[0056] Step S101: If it is detected that the N outdoor unit subsystems of the outdoor unit controller are connected to the N control subsystems of the conversion controller, determine the target identifier of the connected outdoor unit subsystem corresponding to each control subsystem in the N control subsystems, N being a positive integer;

[0057] Step S102: Based on the target identifier corresponding to each control subsystem, determine the wiring state between the outdoor unit controller and the conversion controller, wherein the wiring state is correct wiring or incorrect wiring;

[0058] Step S103: If the wiring state is correct wiring, detect the connection of the indoor unit and the outdoor unit of the air conditioner.

[0059] The method provided by the embodiment of the present specification can be applied to a multi-split air conditioner, which can include one outdoor unit and multiple indoor units, and the indoor units are connected to the outdoor unit through respective corresponding pipelines.

[0060] In the embodiment of the present specification, in order to increase the application range of the multi-split air conditioner, the multi-split air conditioner can support the use of third-party indoor units, such as 24V indoor units or 485 indoor units generated by other air conditioner manufacturers. In order to ensure that the third-party indoor units can operate normally, the third-party indoor units can be connected to the outdoor unit through the conversion controller, so as to realize signal conversion. The conversion controller can be selected as needed. In some embodiments, the conversion controller can be a double 24V signal conversion controller.

[0061] Please refer to Figure 2 The embodiment of the present specification provides a connection diagram of an air conditioner, as shown in Figure 2 The outdoor unit of the air conditioner can comprise an outdoor unit controller and a conversion controller. In Figure 2 , the conversion controller is a double 24V conversion controller, the double 24V conversion controller comprises two control subsystems, which are A control subsystem and B control subsystem, the outdoor unit controller comprises six outdoor unit subsystems A-F, the A control subsystem of the double 24V conversion controller is connected to the A outdoor unit subsystem of the outdoor unit controller, and the B control subsystem of the double 24V conversion controller is connected to the F outdoor unit subsystem of the outdoor unit controller. The double 24V conversion controller is used to convert the current loop communication signal and the 24V / 458 communication signal. Figure 2In the specific embodiment, the air conditioner includes six indoor units, namely, indoor unit A to indoor unit F. The indoor unit A and the indoor unit F are 24V indoor units and are connected with the double 24V transfer controller. The indoor unit B to the indoor unit E are directly connected with the outdoor unit subsystem B to the outdoor unit subsystem E.

[0062] As shown in Figure 2 , for the indoor unit A and the indoor unit F, the double 24V transfer controller communicates with the outdoor unit controller through the 24V / 458 communication signal. For the indoor unit B to the indoor unit E, the outdoor unit controller communicates with the outdoor unit controller through the current loop communication signal.

[0063] A throttling device is arranged on each pipe connected with the outdoor unit and the indoor unit. The throttling device can be selected according to actual needs. As shown in Figure 2 , the throttling device can be an expansion valve. The outdoor unit controller is used to control each expansion valve. As shown in Figure 2 , the expansion valve includes expansion valve A to expansion valve F. For the indoor unit connected with the transfer controller, a cutoff device is arranged on the pipe connected with the outdoor unit in addition to the throttling device. The cutoff device can also be selected according to actual needs. As shown in Figure 2 , the cutoff device can be a cutoff valve. Figure 2 In the specific embodiment, the indoor unit A and the indoor unit F are connected with the transfer controller. The cutoff valve A and the cutoff valve F are arranged on the pipes corresponding to the indoor unit A and the indoor unit F, respectively.

[0064] For example, in the cooling mode of the air conditioner, the throttling device can be arranged on the pipe through which the refrigerant flows back to the evaporator. The cutoff device can be arranged on the pipe through which the refrigerant flows out of the evaporator.

[0065] Since the outdoor unit controller is used to control the throttling device and the transfer controller is used to control the cutoff device, it is necessary to ensure that the control subsystem of the transfer controller and the outdoor unit subsystem of the outdoor unit controller connected therewith are matched. If they are not matched, the control of the throttling device and the control of the cutoff device will be inconsistent, which will cause the air conditioner to fail to operate normally. Therefore, in step S101, when it is detected that the N-path outdoor unit subsystem of the outdoor unit controller is connected with the N-path control subsystem of the transfer controller, the target identifier of the outdoor unit subsystem connected with each control subsystem can be acquired. Whether the control subsystem and the connected outdoor unit subsystem are matched can be determined based on the target identifier.

[0066] It should be noted that N can be set according to actual needs, and still taking the above-mentioned conversion controller as a double 24V conversion controller as an example, N can be 2. In the embodiments of the present specification, each outdoor subsystem included in the outdoor controller can be numbered as the identification of each outdoor subsystem. In some embodiments, the numbers of the first outdoor subsystem to the last outdoor subsystem of the outdoor controller can be defined in sequence as INIdx = [0, …, INMax-1], wherein the number of the first outdoor subsystem is 0, and the number of the last outdoor subsystem is INMax-1.

[0067] The communication mode between the outdoor controller and the conversion controller can be set according to actual needs, for example, the outdoor controller can send the identification of the outdoor subsystem to the conversion controller through protocol A9 byte2 and byte6. Then, when detecting the N outdoor subsystems of the outdoor controller and the N controller subsystems, the outdoor controller can determine the identification of each outdoor subsystem in the N outdoor subsystems as the corresponding target identification, and send the target identification of each outdoor subsystem to the corresponding control subsystem.

[0068] In step S102, in order to ensure the normal operation of the air conditioner, the correct wiring relationship between each control subsystem of the conversion controller and the outdoor subsystem can be pre-set, therefore, after determining the target identification of the corresponding outdoor subsystem of each control subsystem, it can be determined whether the target identification of each control subsystem corresponds to the pre-set outdoor subsystem identification, to determine whether the wiring between the outdoor controller and the conversion controller is correct.

[0069] In some embodiments, step S102 can be implemented by the following steps: determining the preset outdoor subsystem identification corresponding to each control subsystem; for each control subsystem, if the target identification of the control subsystem is consistent with the preset outdoor subsystem identification of the control subsystem, it is determined that the wiring of the control subsystem is correct; if each control subsystem is correctly wired, the wiring state between the outdoor controller and the conversion controller is correct.

[0070] In the embodiments of the present specification, for the conversion controller, a correspondence between the control subsystems and the corresponding preset external machine subsystem identifiers can be established in advance when the conversion controller is correctly connected with the external machine controller. By querying the correspondence, the preset external machine subsystem identifiers corresponding to the N control subsystems can be determined. Further, for each control subsystem, the preset external machine subsystem identifier of the control subsystem is compared with the target identifier of the actually connected external machine subsystem. If they are the same, it indicates that the connection of the control subsystem is correct. If the connections of the N control subsystems are all correct, the connection between the conversion controller and the external machine controller is correct. If there is one or more incorrect connections of the control subsystems, the connection between the conversion controller and the external machine controller is incorrect.

[0071] When detecting the incorrect connection, an error prompt can also be output to the user, for example, an error alarm is performed through an audible and visual device, an error prompt is displayed through an on-board display device, or an error prompt is pushed to a terminal device of the user, which is not limited here.

[0072] In order to better understand the determination process of the connection state between the external machine controller and the conversion controller, below, taking the external machine controller including M external machine subsystems and the conversion controller including two control subsystems as an example, the determination process of the connection state is specifically described. The determination process of the connection state can be: if the target identifier corresponding to the first control subsystem of the conversion controller is the identifier of the first external machine subsystem in the M external machine subsystems, and the target identifier corresponding to the second control subsystem of the conversion controller is the identifier of the last external machine subsystem in the M external machine subsystems, it is determined that the connection state is correct.

[0073] It should be noted that, since the conversion controller includes two control subsystems, M can be an integer greater than or equal to 2. For ease of description, the above Figure 2For example, the conversion controller is a double 24V conversion controller, when the double 24V conversion controller is correctly connected with the outdoor controller, the preset outdoor subsystem corresponding to the first control subsystem (i.e., the A control subsystem) is the first outdoor subsystem, and the preset outdoor subsystem corresponding to the second control subsystem (i.e., the B control subsystem) is the last outdoor subsystem. For example, the identification of the first outdoor subsystem is 0, and the identification of the last outdoor subsystem is INMax-1. If the target identification of the actually connected outdoor subsystem received by the A control subsystem is not 0, it indicates that the A control subsystem is incorrectly connected, and at this time, an error prompt can be output to the user, for example, the onboard double 8 nixie tube displays “--5A”. If the target identification of the actually connected outdoor subsystem received by the B control subsystem is not INMax-1, it indicates that the B control subsystem is incorrectly connected, and at this time, an error prompt can be output to the user, for example, the onboard double 8 nixie tube displays “--5F”. If the target identification received by the B control subsystem is 0 and the target identification received by the B control subsystem is INMax-1, the wiring state between the outdoor controller and the conversion controller is correct.

[0074] In step S103, on the basis of the correct wiring between the outdoor controller and the conversion controller, the connection between the indoor unit and the outdoor unit of the air conditioner can be further detected. The connection detection between the indoor unit and the outdoor unit can be realized in various ways, for example, by adjusting the fan parameter of one or more indoor units, detecting the connection between the indoor unit and the outdoor unit according to the fan parameter variation, for example, by adjusting the temperature of one or more indoor units, detecting the connection between the indoor unit and the outdoor unit according to the temperature variation of the indoor unit, and other ways can also be used to determine the connection between the indoor unit and the outdoor unit, which is not limited here.

[0075] In some embodiments, step S103 can be realized by the following steps: adjusting the throttling device of the air conditioner based on the outdoor controller, and determining the temperature variation of each indoor unit after the throttling device is adjusted, and the throttling device is arranged on each indoor and outdoor connection pipeline of the air conditioner; detecting the connection between the indoor unit and the outdoor unit of the air conditioner based on the temperature variation of each indoor unit.

[0076] Taking the throttling device as an expansion valve as an example, the outdoor controller can control the expansion valves on each pipeline to open in turn. Since the expansion valves are opened, the refrigerant can circulate in the pipeline where the expansion valve is opened, and the indoor unit can achieve temperature adjustment. In the embodiments of the present specification, the temperature of each indoor unit can be the temperature of the coil of the indoor unit, or the ambient temperature of the environment where the indoor unit is located. For the indoor unit on the pipeline where the expansion valve is opened, if the indoor unit is in a cooling or heating mode, the temperature of the indoor unit will change. For the pipeline where the expansion valve is closed, since there is no refrigerant circulation, the temperature will not change substantially. Therefore, by the temperature change amount of each indoor unit, whether the indoor unit and the outdoor unit are connected can be determined.

[0077] Next, the connection detection of the indoor unit and the outdoor unit is described by taking an outdoor controller including K outdoor subsystems as an example, where each outdoor subsystem is configured to control a throttling device on a corresponding pipeline, and K is an integer greater than or equal to N, for example, K is 5, 6, 7, etc.

[0078] The temperature change amount can be determined by the following steps: determining a to-be-detected outdoor subsystem from the K outdoor subsystems, and obtaining a first temperature of each indoor unit of the air conditioner at a current time, the to-be-detected outdoor subsystem being any one of the K outdoor subsystems; controlling the to-be-detected outdoor subsystem to open the corresponding throttling device to a preset opening degree, and controlling other outdoor subsystems to close the corresponding throttling device, and controlling the compressor to operate; obtaining a second temperature of each indoor unit after the compressor operates for a first preset time length; and determining a first temperature change amount of each indoor unit based on the first temperature and the second temperature of each indoor unit.

[0079] The connection of the indoor unit and the outdoor unit based on the first temperature change amount can be achieved by the following steps: for each to-be-detected outdoor subsystem, if there is a target indoor unit with a first temperature change amount greater than or equal to a first threshold, the target indoor unit is determined as an indoor unit connected to the to-be-detected outdoor subsystem.

[0080] In the embodiments of the present specification, the connection detection of the indoor unit and the outdoor unit can be triggered manually by the user, or can automatically enter the connection detection of the indoor unit and the outdoor unit after it is detected that the outdoor controller and the conversion controller are correctly connected, which is not limited here. Taking manual triggering by the user as an example, if the conversion controller is a double 24V conversion controller, a target button (for example, SW3 button) of the double 24V conversion controller can be used as a button for triggering the connection of the indoor unit and the outdoor unit. The user can enter the connection detection of the indoor unit and the outdoor unit by long pressing the target button.

[0081] In some embodiments, when the indoor unit and the outdoor unit are connected, each indoor unit of the air conditioner can be controlled to enter a forced cooling mode or a forced heating mode, and the connection of the indoor unit and the outdoor unit of the air conditioner is detected in the forced cooling mode or the forced heating mode.

[0082] For ease of illustration, the following takes the example of each indoor unit entering a forced cooling mode, and the same Figure 2 The outdoor unit controller includes six outdoor unit subsystems A-F, and a conversion controller which is a double 24V intermediate controller. Correspondingly, K is 6, and the outdoor unit subsystems A-F are sequentially taken as the to-be-detected outdoor unit subsystems to determine the connection of the indoor unit. Specifically, the outdoor unit subsystem A can be taken as the to-be-detected outdoor unit subsystem first, and the first temperature of each indoor unit at the current time is obtained. Then, the throttling device on the pipeline corresponding to the outdoor unit subsystem A is controlled to open to a preset opening degree, and the preset opening degree can be set according to actual needs, for example, the preset opening degree can be 300 steps, 350 steps, etc., and the other throttling devices are controlled to open and close. After the throttling device is opened to the preset opening degree, the compressor is controlled to run, and after the compressor runs for a first preset time length, the second temperature of each indoor unit is obtained again, and the first preset time length can be set according to actual needs, for example, the first preset time length can be 40s, 45s, etc. Further, the first temperature change of each indoor unit is determined, for example, the difference between the first temperature and the second temperature of each indoor unit is taken as the first temperature change.

[0083] The first temperature change of each indoor unit is compared with a first threshold value, and the first threshold value can be set according to actual needs, for example, the first threshold value is 7°, 8°, etc. If there is a first temperature change greater than or equal to the first threshold value, i.e., the temperature drop is equal to or exceeds the first threshold value, the corresponding indoor unit is taken as the target indoor unit connected with the outdoor unit subsystem A.

[0084] In the embodiments of the present specification, if the first temperature change of each indoor unit is less than the first threshold value, the third temperature of each indoor unit running for a second preset time length is obtained; based on the first temperature and the third temperature of each indoor unit, the second temperature change of each indoor unit is determined; if the second temperature change of each indoor unit is less than a second threshold value, it is determined that the to-be-detected outdoor unit subsystem is not connected with the indoor unit; wherein the second preset time length is greater than the first preset time length, and the second threshold value is less than the first threshold value.

[0085] Still using the above example, when the outdoor subsystem A is taken as the to-be-detected outdoor subsystem, if the first temperature of each indoor unit determined is less than the first threshold value, the third temperature of each indoor unit when the compressor runs for a second preset time length is obtained, wherein the second preset time length can be set according to actual needs, for example, the second preset time length is 60s, 65s, etc. Further, the second temperature variation of each indoor unit is determined, for example, the difference between the first temperature and the third temperature of each indoor unit is taken as the second temperature variation.

[0086] The second temperature variation of each indoor unit is compared with a second threshold value, wherein the second threshold value can be set according to actual needs, for example, the second threshold value is 3°, 2°, etc. If the second temperature variation of each indoor unit is less than the second threshold value, that is, there is no indoor unit with temperature drop exceeding the second threshold value, it is determined that the outdoor subsystem A is not connected to the indoor unit.

[0087] After judging the outdoor subsystem A, the next round of detection is continued on the outdoor subsystem B as the to-be-detected outdoor subsystem, that is, the first temperature of each indoor unit at the current time is recorded, the throttling device on the pipeline corresponding to the outdoor subsystem B is opened by a preset opening degree, and other throttling devices are closed, and the compressor is controlled to run, and the second temperature of each indoor unit after the compressor runs for a first preset time length is obtained, to determine the first temperature variation of each indoor unit. If there is a target indoor unit with the first temperature variation greater than or equal to the first threshold value, the target indoor unit is taken as the indoor unit connected to the outdoor subsystem B. If there is no target indoor unit, the second temperature variation of each indoor unit based on the third temperature of each indoor unit after the compressor runs for a second preset time length is determined, and if the second temperature variation of each indoor unit is less than the second threshold value, it is considered that the outdoor subsystem is not connected to the indoor unit. For the outdoor subsystems C-F, the same way as described above is used to determine whether each outdoor subsystem is connected to the indoor unit.

[0088] In the embodiments of the present application, in the case that the third-party indoor unit and the outdoor unit cannot communicate, the third-party indoor unit can be skipped when detecting the connection between the indoor unit and the outdoor unit, that is, P outdoor subsystems not connected to the relay controller are determined from the K outdoor subsystems, and P is a positive integer; each of the P outdoor subsystems is taken as the to-be-detected outdoor subsystem in turn.

[0089] Specifically, since the third-party indoor unit accesses the outdoor unit through the relay controller, in the K outdoor subsystems, the outdoor subsystems connected to the relay controller correspond to the third-party indoor unit, and the outdoor subsystems other than these outdoor subsystems are taken as the to-be-detected outdoor subsystem in turn, and the above connection detection between the indoor unit and the outdoor unit is performed.

[0090] After determining the connection of the indoor unit to each outdoor unit subsystem in the embodiments of the present specification, the following steps can be performed: determining the number of target indoor units connected to the outdoor unit controller; if the number of target indoor units is consistent with the actual number of indoor units, determining that the connection of the indoor unit and the outdoor unit of the air conditioner is normal.

[0091] In the above process of sequentially determining whether each outdoor unit subsystem is connected to an indoor unit, the total number of indoor units connected to the outdoor unit subsystem, i.e., the number of target indoor units, can be recorded. If the number of target indoor units is the same as the actual number of indoor units, it indicates that the connection of the indoor unit and the outdoor unit is normal. If the number of target indoor units is inconsistent with the actual number of indoor units, it indicates that the connection detection of the indoor unit and the outdoor unit has an error, and at this time, a prompt information can be output to the user. In some embodiments, when the number of target indoor units is inconsistent with the actual number of indoor units, all throttling devices can be opened to a test opening degree, which can ensure that the outdoor unit operates normally, and the air conditioner can recover normal operation after power failure.

[0092] It should be noted that if a third-party indoor unit parameter is used to detect the connection of the indoor unit and the outdoor unit, the actual number of indoor units is the number of all installed indoor units. If the third-party indoor unit does not participate in the connection detection of the indoor unit and the outdoor unit, the actual number of indoor units is the number of all non-third-party indoor units.

[0093] In the embodiments of the present specification, during the use of the multi-split air conditioner, if a control instruction for the indoor unit is received, for example, the control instruction is to adjust the temperature of the indoor unit C, the outdoor unit controller needs to adjust the opening degree of the throttling device corresponding to the indoor unit C accordingly. Therefore, after determining the indoor unit connected to each outdoor unit subsystem, a first mapping relationship can be established between the indoor unit and the throttling device on the corresponding pipeline. In this way, even if the wiring between the indoor unit and the outdoor unit is not connected according to the regulation during the subsequent use of the air conditioner, the throttling device corresponding to the controlled indoor unit can be accurately determined based on the first mapping relationship, so as to avoid control errors.

[0094] For the third-party indoor unit, a cutoff device is further arranged on the corresponding pipeline, that is, a cutoff device is arranged on the connecting pipeline between the N indoor units corresponding to the N control subsystems of the conversion controller and the corresponding N outdoor unit subsystems, and each control subsystem can be used to control the cutoff device on the corresponding pipeline. For example, the A control subsystem of the double 24V intermediate conversion controller can control the cutoff valve A, and the B control subsystem can control the cutoff valve B. Then, the cutoff device on the corresponding pipeline of each third-party indoor unit can be determined according to the third-party indoor unit connected by each control subsystem, and a second mapping relationship between the third-party indoor unit and the cutoff device is established. In this way, in the subsequent use process of the air conditioner, even if the wiring between the third-party indoor unit and the conversion controller is not connected according to the regulation, the corresponding cutoff device of the controlled third-party indoor unit can be accurately determined based on the second mapping relationship, so as to avoid control errors. For example, still taking Figure 2 the double 24V intermediate conversion controller as an example, the cutoff device on the corresponding pipeline of the A control subsystem is the cutoff valve A, and the cutoff device on the corresponding pipeline of the B control subsystem is the cutoff valve B. It is assumed that the A control subsystem should be connected with the indoor unit A according to the regulation, and the B control subsystem should be connected with the indoor unit F. If the indoor unit A and the indoor unit F are reversed during actual installation, that is, the A control subsystem is connected with the indoor unit F, and the B control subsystem is connected with the indoor unit A, then the second mapping relationship established can be that the indoor unit A corresponds to the cutoff valve B, and the indoor unit F corresponds to the cutoff valve A. Then, during subsequent control, the control will not be incorrect due to the reversed indoor units.

[0095] In summary, the scheme in the embodiment of the present application can determine whether the control subsystems of the conversion controller and the control subsystems of the outdoor controller are correctly wired through communication between the outdoor controller and the conversion controller, can quickly detect whether the outdoor controller and the conversion controller are correctly wired, and can detect the connection between the indoor unit and the outdoor unit of the air conditioner when the outdoor controller and the conversion controller are correctly wired, determine the actual indoor unit connected by the outdoor unit, ensure the normal operation of the air conditioner, and avoid operation abnormalities caused by manual missed detection. At the same time, the scheme is simple and reliable, and effectively improves the connection detection efficiency of the indoor unit and the outdoor unit of the air conditioner.

[0096] Based on the same inventive concept, the embodiment of the present application provides a connection detection device for an indoor unit and an outdoor unit of an air conditioner. The air conditioner includes an outdoor controller and a conversion controller. The outdoor controller includes a plurality of outdoor unit subsystems. The conversion controller includes a plurality of control subsystems. As shown in Figure 3 the device includes:

[0097] The first processing module 301 is configured to, if it is detected that N external machine subsystems of the external machine controller are connected to N control subsystems of the conversion controller, determine target identifiers of the external machine subsystems corresponding to each of the N control subsystems, where N is a positive integer.

[0098] The second processing module 302 is configured to determine a wiring state between the external machine controller and the conversion controller based on the target identifiers corresponding to each of the N control subsystems, where the wiring state is correct or incorrect.

[0099] The detection module 303 is configured to, if the wiring state is correct, detect the connection between the indoor machine and the external machine of the air conditioner.

[0100] In some embodiments, the detection module 303 is configured to:

[0101] adjust the throttling device of the air conditioner based on the external machine controller, and determine a temperature change of each indoor machine after the adjustment of the throttling device, where a throttling device is arranged on each connection pipeline between the indoor machine and the external machine of the air conditioner.

[0102] detect the connection between the indoor machine and the external machine of the air conditioner based on the temperature change of each indoor machine.

[0103] In some embodiments, the second processing module 302 is configured to:

[0104] determine a preset external machine subsystem identifier corresponding to each of the N control subsystems.

[0105] For each of the N control subsystems, if the target identifier of the control subsystem is consistent with the preset external machine subsystem identifier of the control subsystem, it is determined that the control subsystem is correctly wired.

[0106] If each of the N control subsystems is correctly wired, the wiring state between the external machine controller and the conversion controller is correct.

[0107] In some embodiments, the external machine controller includes M external machine subsystems, where M is an integer greater than or equal to 2, and the conversion controller includes two control subsystems. The second processing module 302 is configured to:

[0108] If the target identifier corresponding to the first control subsystem of the conversion controller is the identifier of the first external machine subsystem of the M external machine subsystems, and the target identifier corresponding to the second control subsystem of the conversion controller is the identifier of the last external machine subsystem of the M external machine subsystems, it is determined that the wiring state is correct.

[0109] In some embodiments, the outdoor controller comprises K outdoor subsystems, each of which is configured to control a throttling device on a corresponding pipeline, K is an integer greater than or equal to N, the detection module 303 is configured to:

[0110] determine a to-be-detected outdoor subsystem from the K outdoor subsystems, and obtain a first temperature of each indoor unit of the air conditioner at a current time, the to-be-detected outdoor subsystem being any one of the K outdoor subsystems;

[0111] control the to-be-detected outdoor subsystem to open the corresponding throttling device to a preset opening degree, control other outdoor subsystems to close the corresponding throttling device, and control the compressor to operate;

[0112] obtain a second temperature of each indoor unit after the compressor operates for a first preset time length;

[0113] determine a first temperature change of each indoor unit based on the first temperature and the second temperature of each indoor unit.

[0114] In some embodiments, the detection module 303 is configured to:

[0115] determine P outdoor subsystems from the K outdoor subsystems that are not connected to the transit controller, P being a positive integer;

[0116] take each of the P outdoor subsystems as the to-be-detected outdoor subsystem in turn.

[0117] In some embodiments, the detection module 303 is configured to:

[0118] for each to-be-detected outdoor subsystem, if there is a target indoor unit with a first temperature change greater than or equal to a first threshold, the target indoor unit is taken as an indoor unit connected to the to-be-detected outdoor subsystem.

[0119] In some embodiments, the detection module 303 is configured to:

[0120] if the first temperature change of each indoor unit is less than the first threshold, obtain a third temperature of each indoor unit after the compressor operates for a second preset time length;

[0121] determine a second temperature change of each indoor unit based on the first temperature and the third temperature of each indoor unit;

[0122] if the second temperature change of each indoor unit is less than a second threshold, determine that the to-be-detected outdoor subsystem is not connected to an indoor unit;

[0123] wherein the second preset time length is greater than the first preset time length, and the second threshold is less than the first threshold.

[0124] In some embodiments, the device further comprises:

[0125] An indoor unit quantity determination module, configured to determine a target number of indoor units connected to the outdoor unit controller;

[0126] The third processing module is configured to determine that the indoor and outdoor units of the air conditioner are normally connected if the target number of indoor units is consistent with the actual number of indoor units.

[0127] In some embodiments, the detection module 303 is configured to:

[0128] If the wiring status is correct, each indoor unit of the air conditioner is controlled to enter a forced cooling mode or a forced heating mode;

[0129] When each indoor unit enters the forced cooling mode or the forced heating mode, the connection between the indoor unit and the outdoor unit of the air conditioner is detected.

[0130] Regarding the above-mentioned device, the specific functions of each module therein have been described in detail in the embodiment of the connection detection method of the indoor and outdoor units of the air conditioner provided in the embodiment of this specification, and will not be elaborated here.

[0131] Based on the same inventive concept, an embodiment of the present invention provides an air conditioner, referring to Figure 4 As shown, it includes a memory 404, a processor 402 and a computer program stored in the memory 404 and capable of running on the processor 402. When the processor 402 executes the program, any implementation method of the embodiment of the connection detection method of the indoor and outdoor units of the air conditioner is implemented.

[0132] Among them, Figure 4 In the embodiment of the present invention, a bus architecture (represented by bus 400) is shown. Bus 400 may include any number of interconnected buses and bridges, and bus 400 links together various circuits including one or more processors represented by processor 402 and memory represented by memory 404. Bus 400 may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. Bus interface 405 provides an interface between bus 400 and receiver 401 and transmitter 403. Receiver 401 and transmitter 403 may be the same component, namely a transceiver, which provides a unit for communicating with various other devices over a transmission medium. Processor 402 is responsible for managing bus 400 and general processing, while memory 404 may be used to store data used by processor 402 when performing operations.

[0133] The functions described herein can be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions can be stored on or transferred over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope and spirit of the disclosure and appended claims. For example, due to the nature of software, functions described above can be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions can also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations. Also, as used herein, including in the claims, "or" as used in a list of items prefaced by "comprising" to indicate a disjunctive list means each single item in the list has been recited before "or" one or more additional disjunctive items also have been recited. However, "or" in such a phrase does not mean that the list is inclusive of at least one of the items. Further, as used herein, "comprising" is to be interpreted as including the more restrictive terms "consisting of" and "consisting essentially of."

[0134] In several embodiments provided in the present application, it should be understood that the disclosed technology can be implemented in other ways. Among them, the above-mentioned device embodiments are only schematic, for example, the division of the units can be a logical function division, and other division manners can be used in actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the displayed or discussed units can be indirect coupling or communication connection through some interfaces, units or modules, which can be electrical or other forms.

[0135] The units described as separate components can or can not be physically separated, and the components of the control device can or can not be physical units, i.e. can be located in one place or can be distributed on a plurality of units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0136] The integrated unit, if implemented in the form of a software function unit and sold or used as an independent product, can be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present application essentially or the part that contributes to the prior art or the whole or part of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium, including a plurality of instructions to make a computer device (which can be a personal computer, a server or a network device, etc.) execute all or part of the steps of the method described in various embodiments of the present application. The aforementioned storage medium includes: a U disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a mobile hard disk, a magnetic disk or an optical disk, and various media that can store program codes.

[0137] The above merely illustrates the embodiments of the present application but should not be taken as limitations. Various changes and modifications can be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of claims of the present application.

Claims

1. A method for detecting connection between an indoor unit and an outdoor unit of an air conditioner, characterized by, The air conditioner comprises an outdoor controller and a conversion controller, the outdoor controller comprises a plurality of outdoor subsystems, the conversion controller comprises a plurality of control subsystems, and the method comprises the following steps: If it is detected that the N outdoor subsystems of the outdoor controller are connected with the N control subsystems of the conversion controller, determining the target identification of each control subsystem corresponding to the connected outdoor subsystem, N being a positive integer; Based on the target identification corresponding to each control subsystem, determining the wiring state between the outdoor controller and the conversion controller, wherein the wiring state is correct wiring or incorrect wiring; If the wiring state is correct wiring, detecting the connection between the indoor unit and the outdoor unit of the air conditioner.

2. The method of claim 1, wherein, The detection of the connection between the indoor unit and the outdoor unit of the air conditioner comprises the following steps: Based on the outdoor controller adjusting the throttling device of the air conditioner, and determining the temperature variation of each indoor unit after the adjustment of the throttling device, each indoor unit and outdoor unit of the air conditioner is provided with a throttling device; Based on the temperature variation of each indoor unit, detecting the connection between the indoor unit and the outdoor unit of the air conditioner.

3. The method of claim 1, wherein, The determination of the wiring state between the outdoor controller and the conversion controller based on the target identification corresponding to each control subsystem comprises the following steps: Determining the preset outdoor subsystem identification corresponding to each control subsystem; For each control subsystem, if the target identification of the control subsystem is consistent with the preset outdoor subsystem identification of the control subsystem, it is determined that the control subsystem is correctly wired; If each control subsystem is correctly wired, the wiring state between the outdoor controller and the conversion controller is correct wiring.

4. The method of claim 1, wherein, The outdoor controller comprises M outdoor subsystems, M being an integer greater than or equal to 2, the conversion controller comprises two control subsystems, and the determination of the wiring state between the outdoor controller and the conversion controller based on the target identification corresponding to each control subsystem comprises the following steps: If the target identification corresponding to the first control subsystem of the conversion controller is the identification of the first outdoor subsystem in the M outdoor subsystems, and the target identification corresponding to the second control subsystem of the conversion controller is the identification of the last outdoor subsystem in the M outdoor subsystems, it is determined that the wiring state is correct wiring.

5. The method of claim 2, wherein, The outdoor controller comprises K outdoor subsystems, each outdoor subsystem being used for controlling the throttling device on the corresponding pipeline, K being an integer greater than or equal to N, and the adjustment of the throttling device of the air conditioner by the outdoor controller and the determination of the temperature variation of each indoor unit after the adjustment of the throttling device comprise the following steps: From the K outdoor subsystems, determining a to-be-detected outdoor subsystem, and acquiring the first temperature of each indoor unit of the air conditioner at the current time, the to-be-detected outdoor subsystem being any subsystem in the K outdoor subsystems; Controlling the to-be-detected outdoor subsystem to open the corresponding throttling device to a preset opening degree, controlling other outdoor subsystems to close the corresponding throttling device, and controlling the compressor to operate; Obtaining a second temperature of each indoor unit after the compressor has been running for a first preset time; A first temperature change amount of each indoor unit is determined based on the first temperature and the second temperature of each indoor unit.

6. The method of claim 5, wherein, The step of determining the external unit subsystem to be detected from the K external unit subsystems includes: Determine P off-road machine subsystems that are not connected to the transfer controller from the K off-road machine subsystems, where P is a positive integer; Each of the P external unit subsystems is sequentially used as the external unit subsystem to be detected.

7. The method of claim 5 or 6, wherein, The detecting the connection between the indoor unit and the outdoor unit of the air conditioner based on the temperature change of each indoor unit includes: For each of the outdoor unit subsystems to be detected, if there is a target indoor unit whose first temperature variation is greater than or equal to a first threshold, the target indoor unit is used as the indoor unit connected to the outdoor unit subsystem to be detected.

8. The method of claim 7, wherein, The detecting the connection between the indoor unit and the outdoor unit of the air conditioner based on the temperature change of each indoor unit includes: If the first temperature change amount corresponding to each indoor unit is less than the first threshold, obtaining a third temperature of each indoor unit when the compressor runs for a second preset time; determining a second temperature change of each indoor unit based on the first temperature and the third temperature of each indoor unit; If the second temperature variation corresponding to each indoor unit is less than the second threshold, it is determined that the outdoor unit subsystem to be detected is not connected to the indoor unit; The second preset duration is greater than the first preset duration, and the second threshold is less than the first threshold.

9. The method of claim 7, wherein, The method further comprises: determining the target number of indoor units connected to the outdoor unit controller; If the target number of indoor units is consistent with the actual number of indoor units, it is determined that the indoor unit and the outdoor unit of the air conditioner are connected normally.

10. The method of claim 1, wherein, If the wiring state is correct, detecting the connection between the indoor unit and the outdoor unit of the air conditioner includes: If the wiring status is correct, each indoor unit of the air conditioner is controlled to enter a forced cooling mode or a forced heating mode; When each indoor unit enters the forced cooling mode or the forced heating mode, the connection between the indoor unit and the outdoor unit of the air conditioner is detected.

11. A connection detection device for an indoor unit and an outdoor unit of an air conditioner, characterized in that: The air conditioner includes an outdoor unit controller and a conversion controller, the outdoor unit controller includes a multi-channel outdoor unit subsystem, the conversion controller includes a multi-channel control subsystem, and the device includes: A first processing module is configured to, if it is detected that N external unit subsystems of the external unit controller are connected to N control subsystems of the conversion controller, determine a target identifier of an external unit subsystem corresponding to each control subsystem in the N control subsystems, where N is a positive integer; A second processing module is configured to determine a connection state between the external unit controller and the conversion controller based on a target identifier corresponding to each control subsystem, wherein the connection state is a correct connection or an incorrect connection; The detection module is used to detect the connection between the indoor unit and the outdoor unit of the air conditioner if the wiring status is correct.

12. An air conditioner characterized by comprising: The method comprises a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the method according to any one of claims 1 to 10 when executing the program.

13. A computer-readable storage medium, characterized in that, A computer program product comprising a computer readable medium having stored thereon computer program, the computer program being loadable into an internal memory of a processor and arranged to cause the processor to perform the steps of the method according to any one of claims 1 to 10 when the computer program is executed by the processor.

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