Air conditioner outdoor unit testing method, system and computer-readable storage medium

Abstract

The present invention provides a method, system, and computer-readable storage medium for testing an air conditioner outdoor unit. The air conditioner outdoor unit is charged with a first preset refrigerant charge, which is less than the rated refrigerant charge of the air conditioner outdoor unit. The air conditioner outdoor unit testing method includes: controlling the liquid pipe valve and the gas pipe valve of the air conditioner outdoor unit to close, and controlling the first electronic expansion valve, the second electronic expansion valve, and the four-way valve of the air conditioner outdoor unit to open, so that a refrigerant circulation loop is formed between the compressor, the condenser, and the subcooler of the air conditioner outdoor unit; controlling the compressor and the outdoor fan of the air conditioner outdoor unit to start and operate, and detecting preset test parameters. The air conditioner outdoor unit testing method of the present invention can ensure the consistency of the energy efficiency of the air conditioner outdoor unit product. The testing operation is time-saving, labor-saving, convenient, and quick, thereby improving testing efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of air-conditioning outdoor unit testing, and in particular to an air-conditioning outdoor unit testing method, a system for implementing the method, and a computer-readable storage medium. Background Art

[0002] After the air conditioner outdoor unit is assembled, it needs to be tested before leaving the factory to confirm that the relevant parameters of the air conditioner outdoor unit are qualified, including the detection of parameters such as current value, pressure value, temperature value, power value, etc.

[0003] See also Figure 1 In the existing air-conditioning outdoor unit testing method, before testing the air-conditioning outdoor unit 10, it is necessary to connect the pipeline of the air-conditioning outdoor unit 10 to the indoor unit testing tool 20, and then open the liquid pipe valve 17 and the gas pipe valve 18 of the air-conditioning outdoor unit 10, so that the refrigerant inside the air-conditioning system composed of the air-conditioning outdoor unit 10 and the indoor unit testing tool 20 circulates between the compressor 11 and the condenser 12 of the air-conditioning outdoor unit 10 and the evaporator 21 of the indoor unit testing tool 20, thereby running the test. The subcooler 14, which plays a role in improving the supercooling degree in the actual working air-conditioning system, is not connected to the test system for refrigerant circulation.

[0004] However, existing air conditioner outdoor unit testing methods require a refrigerant recovery operation after the test is completed. During this operation, the liquid pipe valve 17 of the air conditioner outdoor unit 10 is first closed, and the gas pipe valve 18 of the air conditioner outdoor unit 10 is opened to recover the refrigerant to the air conditioner outdoor unit 10. Since the refrigerant is circulated between the compressor 11 and condenser 12 of the air conditioner outdoor unit 10 and the evaporator 21 of the indoor unit test fixture 20 during the test process, there is a certain amount of refrigerant loss. After the test is completed, the refrigerant is recovered to the air conditioner outdoor unit 10, which is prone to fluctuations in the amount of recovered refrigerant, thereby affecting the consistency of the energy efficiency of the air conditioner outdoor unit 10. In addition, the existing air-conditioning outdoor unit testing method requires connecting the pipeline of the air-conditioning outdoor unit 10 to the indoor unit testing tool 20, opening the liquid pipe valve 17 and the gas pipe valve 18 of the air-conditioning outdoor unit 10, and after the test is completed, controlling the valve switch to recover the refrigerant, and removing the pipeline of the air-conditioning outdoor unit 10 from the indoor unit testing tool 20. The pipeline connection process and the disassembly process are time-consuming and labor-intensive, and the valve switching operation and the refrigerant recovery operation cause the test to take a long time and the test efficiency is low. Summary of the Invention

[0005] The first object of the present invention is to provide an air-conditioning outdoor unit testing method, which can ensure the consistency of the energy efficiency of the air-conditioning outdoor unit product, and the testing operation is time-saving, labor-saving, convenient and fast, thereby improving the testing efficiency.

[0006] A second object of the present invention is to provide an air-conditioning outdoor unit testing system for implementing the above-mentioned air-conditioning outdoor unit testing method.

[0007] A third object of the present invention is to provide a computer-readable storage medium for implementing the above-mentioned air conditioner outdoor unit testing method.

[0008] In order to achieve the first purpose of the present invention, the present invention provides a method for testing an air-conditioning outdoor unit, wherein the refrigerant of the air-conditioning outdoor unit is a first preset filling amount, and the first preset filling amount is less than the rated filling amount of the refrigerant of the air-conditioning outdoor unit. The method for testing the air-conditioning outdoor unit includes: controlling the liquid pipe valve and the gas pipe valve of the air-conditioning outdoor unit to close, and controlling the first electronic expansion valve, the second electronic expansion valve and the four-way valve of the air-conditioning outdoor unit to open, so that a refrigerant circulation loop is formed between the compressor, the condenser and the subcooler of the air-conditioning outdoor unit; controlling the compressor and the outdoor fan of the air-conditioning outdoor unit to start and run, and detecting the preset test parameters.

[0009] It can be seen from the above scheme that compared with the existing air-conditioning outdoor unit testing method, which requires connecting the pipeline of the air-conditioning outdoor unit with the indoor unit testing tooling, the pipeline connection process and the disassembly process are time-consuming and labor-intensive, and the valve switching operation and the refrigerant recovery operation cause the test to take a long time. The air-conditioning outdoor unit testing method of the present invention utilizes the subcooler to improve the subcooling degree in the air-conditioning system, and directly uses the subcooler of the air-conditioning outdoor unit as the evaporator of the air-conditioning indoor unit for heat exchange operation. It is only necessary to electrically connect the air-conditioning outdoor unit to the testing system. The air-conditioning outdoor unit can be tested without connecting the pipeline of the air-conditioning outdoor unit to the indoor unit testing tooling, and no valve switching operation is required. The testing operation is time-saving, labor-saving, convenient and fast, thereby improving the testing efficiency, and there is no need to recover the refrigerant, which can maximize the consistency of the energy efficiency of the air-conditioning outdoor unit product.

[0010] A preferred solution is that the first electronic expansion valve and the second electronic expansion valve are opened and operated with a maximum number of steps.

[0011] A further solution is that the operating frequency of the outdoor fan is between 20 Hz and 40 Hz.

[0012] A further solution is to detect the preset test parameters when the exhaust pressure of the compressor is stable within a first preset deviation range and the suction pressure of the compressor is stable within a second preset deviation range.

[0013] A further solution is that before forming a refrigerant circulation loop between the compressor, condenser and subcooler of the air-conditioning outdoor unit, the air-conditioning outdoor unit testing method also includes: controlling the filling machine to fill the air-conditioning outdoor unit with a first preset filling amount of refrigerant; and / or, when the preset test parameters are determined to be qualified, the air-conditioning outdoor unit testing method also includes: controlling the filling machine to fill the air-conditioning outdoor unit with a second preset filling amount of refrigerant, so that the total filling amount of the refrigerant in the air-conditioning outdoor unit reaches the rated filling amount.

[0014] A further solution is that the first preset filling amount is between 10% and 50% of the rated filling amount.

[0015] A further solution is that after the compressor is turned on, the frequency is gradually increased to the target frequency at a preset interval; and / or the compressor operates at a preset compression ratio, which is between 2 and 6.

[0016] A further solution is that the preset interval frequency is between 5 Hz and 10 Hz; and / or the target frequency is between 50 Hz and 60 Hz.

[0017] A further solution is that when the compressor is running at a preset interval frequency and gradually increasing to a target frequency, the preset interval frequency is increased in each frequency increase stage, and the preset running time of multiple frequency increase stages is gradually reduced.

[0018] In order to achieve the second purpose of the present invention, the present invention provides an air-conditioning outdoor unit testing system, including a testing system with a circuit board, on which a processor and a memory are provided, and the memory stores a computer program. When the computer program is executed by the processor, the various steps of the above-mentioned air-conditioning outdoor unit testing method are implemented.

[0019] In order to achieve the third objective of the present invention, the present invention provides a computer-readable storage medium having a computer program stored thereon, which implements the various steps of the above-mentioned air conditioner outdoor unit testing method when the computer program is executed by a processor. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a test diagram of the connection between the air conditioner outdoor unit and the indoor unit test tooling in the existing air conditioner outdoor unit test method.

[0021] Figure 2 1 is a test schematic diagram of an air-conditioning outdoor unit in an embodiment of the air-conditioning outdoor unit testing method of the present invention.

[0022] Figure 3 It is a flow chart of an embodiment of a method for testing an air conditioner outdoor unit of the present invention.

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments. DETAILED DESCRIPTION

[0024] Example of the test method for the air conditioner outdoor unit:

[0025] This embodiment is applied to the test process of the air-conditioning outdoor unit 10 before it leaves the factory. Figure 2 , Figure 2 1 is a test diagram of the air-conditioning outdoor unit 10 in the air-conditioning outdoor unit test method of this embodiment. The air-conditioning outdoor unit 10 of this embodiment includes a liquid pipe valve 17, a gas pipe valve 18, a first electronic expansion valve 15, a second electronic expansion valve 16, a compressor 11, an outdoor fan 13, a condenser 12, a subcooler 14, a four-way valve 111, a gas-liquid separator 112 and other components. The subcooler 14 plays a role in improving the subcooling degree in the air-conditioning system.

[0026] See also Figure 3 , Figure 3 4 is a flow chart of the air-conditioning outdoor unit testing method of this embodiment. The specific steps of the air-conditioning outdoor unit testing method of this embodiment are as follows.

[0027] First, execute step S1 to control the liquid pipe valve 17 and the gas pipe valve 18 of the air-conditioning outdoor unit 10 to be closed, and control the first electronic expansion valve 15, the second electronic expansion valve 16 and the four-way valve 111 of the air-conditioning outdoor unit 10 to be opened, so that a refrigerant circulation loop is formed between the compressor 11, the condenser 12 and the subcooler 14 of the air-conditioning outdoor unit 10.

[0028] Then execute step S2 to control the compressor 11 and the outdoor fan 13 of the air-conditioning outdoor unit 10 to start and run. In the test heat exchange operation mode, the refrigerant first passes through the four-way valve 111 and the condenser 12 for heat exchange, and then passes through the first electronic expansion valve 15 and the second electronic expansion valve 16 for throttling, and then passes through the subcooler 14 for evaporation and heat exchange, and finally passes through the gas-liquid separator 112 and returns to the compressor 11, so that the refrigerant circulates back and forth in the refrigerant circulation loop for heat exchange.

[0029] Compared with the existing air-conditioning outdoor unit testing method, which requires connecting the pipeline of the air-conditioning outdoor unit 10 to the indoor unit testing tool 20, the pipeline connection process and the disassembly process are time-consuming and labor-intensive, and the valve switching operation and the refrigerant recovery operation cause the test to take a long time. The air-conditioning outdoor unit testing method of this embodiment utilizes the subcooler 14 to improve the subcooling degree in the air-conditioning system, and directly uses the subcooler 14 of the air-conditioning outdoor unit 10 as the evaporator of the air-conditioning indoor unit for heat exchange operation. It is only necessary to electrically connect the air-conditioning outdoor unit 10 to the testing system. The air-conditioning outdoor unit 10 can be tested without connecting the pipeline of the air-conditioning outdoor unit 10 to the indoor unit testing tool 20, and no valve switching operation is required. The testing operation is time-saving, labor-saving, convenient and fast, thereby improving the testing efficiency, and there is no need to recover the refrigerant, which can maximize the consistency of the energy efficiency of the air-conditioning outdoor unit 10 product.

[0030] In order to ensure the accuracy of the test results and the working reliability of the subcooler 14 as the evaporator of the air-conditioning indoor unit, the air-conditioning outdoor unit 10 can be filled with a first preset filling amount of refrigerant before the air-conditioning outdoor unit 10 is tested. The first preset filling amount is less than the rated filling amount of the refrigerant of the air-conditioning outdoor unit 10, so that the refrigerant filling amount of the air-conditioning outdoor unit 10 during the test is the first preset filling amount. The first preset filling amount of refrigerant is matched and filled according to the heat exchange capacity of the subcooler 14 of the air-conditioning outdoor unit 10. The first preset filling amount is less than the rated filling amount of the refrigerant of the air-conditioning outdoor unit 10, so as to reduce the refrigerant filling amount so that the heat exchange amount of the subcooler 14 serving as the evaporator of the air-conditioning indoor unit is reduced, thereby reducing energy consumption.

[0031] Among them, when the air-conditioning outdoor unit 10 filled with a first preset amount of refrigerant is tested, the air-conditioning outdoor unit 10 is electrically connected to the test system. The circuit board of the test system is provided with a processor and a memory, and the memory stores a computer program. When the computer program is executed by the processor, the various steps of the air-conditioning outdoor unit testing method of this embodiment are implemented, so that step S1 is first executed to control the liquid pipe valve 17 and the gas pipe valve 18 of the air-conditioning outdoor unit 10 to be closed, and the first electronic expansion valve 15, the second electronic expansion valve 16 and the four-way valve 111 of the air-conditioning outdoor unit 10 to be opened, so that a refrigerant circulation loop is formed between the compressor 11, the condenser 12 and the subcooler 14 of the air-conditioning outdoor unit 10, and then step S2 is executed to control the compressor 11 and the outdoor fan 13 of the air-conditioning outdoor unit 10 to start and run, so that the air-conditioning outdoor unit 10 simulates the actual use state heat exchange operation, so as to execute the subsequent preset test parameter detection steps. Specifically, the first preset filling amount in this embodiment is between 10% and 50% of the rated filling amount of the refrigerant in the air-conditioning outdoor unit 10, and the first electronic expansion valve 15 and the second electronic expansion valve 16 in this embodiment are opened and operated with the maximum number of steps to ensure the heat exchange effect of the subcooler 14.

[0032] In addition, the operating frequency of the outdoor fan 13 in this embodiment is between 20 Hz and 40 Hz, that is, the outdoor fan 13 operates at a low frequency, so that the pressure of the refrigerant in the system reaches equilibrium as soon as possible, and can reduce the enthalpy difference between the inlet and outlet of the heat exchanger, minimize the system cooling capacity during the test, and make the refrigerant in the system circulate mainly in gaseous form, reducing the risk of liquid backflow in the compressor 11.

[0033] In order to further balance the pressure of the refrigerant in the system as quickly as possible, the compressor 11 of this embodiment starts running and gradually increases to the target frequency at a preset interval frequency, which can improve the working reliability of the compressor 11 when it is first started, and is also beneficial to establish the initial oil film of the compressor 11. Specifically, the preset interval frequency of this embodiment is between 5Hz and 10Hz, and the target frequency is between 50Hz and 60Hz. For example, the first scheme in which the compressor 11 gradually increases to the target frequency at a preset interval frequency is: after running at 30Hz for 30 seconds, it increases to 35Hz at 5Hz for 10 seconds, then increases to 40Hz at 5Hz for 10 seconds, then increases to 45Hz at 5Hz for 10 seconds, then increases to the target frequency of 50Hz at 5Hz; the second scheme in which the compressor 11 gradually increases to the target frequency at a preset interval frequency is: after running at 30Hz for 30 seconds, it increases to 40Hz at 5Hz for 10 seconds, then increases to 50Hz at 5Hz; Hz after 15 seconds, then increase by 10 Hz to the target frequency of 50 Hz; the third scheme in which the compressor 11 operates at a preset interval frequency and gradually increases to the target frequency: after operating at 30 Hz for 30 seconds, increase by 5 Hz to 35 Hz, after operating for 25 seconds, increase by 5 Hz to 40 Hz, after operating for 20 seconds, increase by 5 Hz to 45 Hz, after operating for 15 seconds, and then increase by 5 Hz to the target frequency of 50 Hz. Therefore, this scheme is that during the process of the compressor 11 gradually increasing to the target frequency at the preset interval frequency, the preset interval frequency is increased in each frequency increase stage, and the preset operating time of multiple frequency increase stages is gradually reduced. In addition, in this embodiment, the compressor 11 operates at a preset compression ratio between 2 and 6 to avoid overheating and damage to the internal motor of the compressor 11 caused by an excessively large compression ratio, thereby protecting the compressor 11.

[0034] Then, step S3 is executed to determine whether the exhaust pressure of the compressor 11 is stable within the first deviation range, and whether the suction pressure of the compressor 11 is stable within the second deviation range. If so, step S4 is executed to detect the preset test parameters; if not, step S2 is executed.

[0035] When the exhaust pressure of compressor 11 is stable within a first preset deviation range, and the suction pressure of compressor 11 is stable within a second preset deviation range, step S4 is executed to test the preset test parameters, namely, the current value, pressure value, temperature value, power value, etc., to ensure the accuracy of the test data. In this embodiment, the first preset deviation range is ±3, and the second preset deviation range is ±3.

[0036] After step S4 is completed, step S5 is executed, and the preset test parameters are determined to be qualified, after which the air conditioner outdoor unit testing method of this embodiment is terminated.

[0037] In order to improve the overall production efficiency of the air-conditioning outdoor unit 10, the air-conditioning outdoor unit testing method of this embodiment may further include steps S0 and S6. Specifically, before forming a refrigerant circulation loop between the compressor 11, condenser 12, and subcooler 14 of the air-conditioning outdoor unit 10, that is, before executing step S1, the air-conditioning outdoor unit testing method of this embodiment first executes step S0 to control the filling machine to fill the air-conditioning outdoor unit 10 with a first preset filling amount of refrigerant. Furthermore, after the preset test parameters are determined to be qualified, that is, after executing step S5, the air-conditioning outdoor unit testing method of this embodiment then executes step S6 to control the filling machine to fill the air-conditioning outdoor unit 10 with a second preset filling amount of refrigerant, so that the total refrigerant filling amount of the air-conditioning outdoor unit 10 reaches the rated filling amount. As a result, the air-conditioning outdoor unit 10 tested by the air-conditioning outdoor unit testing method of this embodiment has better energy efficiency consistency and better product quality.

[0038] Air conditioner outdoor unit test system embodiment:

[0039] The air-conditioning outdoor unit testing system of this embodiment includes a testing system having a circuit board, on which a processor and a memory are provided. The memory stores a computer program that can be run on the processor, and when the processor executes the computer program, each step of the above-mentioned air-conditioning outdoor unit testing method is implemented.

[0040] For example, a computer program can be divided into one or more modules, one or more of which are stored in a memory and executed by a processor to implement the various modules of the present invention. One or more modules can be a series of computer program instruction segments that can perform specific functions, and the instruction segments are used to describe the execution process of the computer program in a terminal device.

[0041] The processor referred to in the present invention may be a central processing unit (CPU), other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor. The processor is the control center of an electrical appliance, connecting all parts of the appliance using various interfaces and circuits.

[0042] The memory can be used to store computer programs and / or modules. The processor implements the various functions of the appliance by running or executing the computer programs and / or modules stored in the memory, as well as accessing data stored in the memory. The memory can primarily include a program storage area and a data storage area. The program storage area can store an operating system, at least one application required for a function, and the data storage area can store data generated based on the use of the appliance. Furthermore, the memory can include high-speed random access memory and non-volatile memory, such as a hard disk, internal memory, a plug-in hard disk, a SmartMediaCard (SMC), a Secure Digital (SD) card, a flash card, at least one disk storage device, a flash memory device, or other volatile solid-state storage device.

[0043] Computer readable storage medium embodiment:

[0044] If the computer program stored in the memory of the air conditioner outdoor unit testing system is implemented as a software functional unit and sold or used as a standalone product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention can also implement all or part of the process steps of the above-mentioned embodiment method by instructing the relevant hardware through a computer program. This computer program can be stored in a computer-readable storage medium. When executed by a processor, this computer program can implement each step of the above-mentioned air conditioner outdoor unit testing method.

[0045] Among them, computer programs include computer program code, which may be in source code form, object code form, executable files, or some intermediate form. Computer-readable media may include: any entity or device capable of carrying computer program code, recording media, USB flash drives, removable hard drives, magnetic disks, optical disks, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signals, telecommunications signals, and software distribution media. It should be noted that the content included in computer-readable media may be appropriately increased or decreased based on the requirements of legislation and patent practice within a jurisdiction. For example, in some jurisdictions, based on legislation and patent practice, computer-readable media does not include electric carrier signals and telecommunications signals.

[0046] The above embodiments are only preferred examples of the present invention and are not intended to limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made based on the structure, features and principles of the patent application scope of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. Air conditioner outdoor unit testing method, characterized by: The refrigerant in the outdoor unit of the air conditioner is at a first preset charge amount, and the first preset charge amount is less than the rated charge amount of the refrigerant in the outdoor unit of the air conditioner; The air conditioner outdoor unit testing method includes: Controlling the closure of the liquid pipe valve and the gas pipe valve of the air conditioner outdoor unit, and controlling the opening of the first electronic expansion valve, the second electronic expansion valve and the four-way valve of the air conditioner outdoor unit, so that a refrigerant circulation loop is formed between the compressor, the condenser and the subcooler of the air conditioner outdoor unit; Control the compressor and outdoor fan of the air conditioner outdoor unit to start and run, and test the preset test parameters; In which, the first valve port of the four-way valve is connected to the exhaust port of the compressor, the condenser is connected between the first electronic expansion valve and the second valve port of the four-way valve, the first electronic expansion valve and the liquid pipe valve are connected through a first flow path, the subcooler is connected to the first flow path, the second electronic expansion valve is arranged on the second flow path, the first end of the second flow path is connected to the first flow path between the first electronic expansion valve and the subcooler, the second end of the second flow path is connected to the subcooler, and the subcooler is connected to the first end of the third flow path, the second end of the third flow path is respectively connected to the first end of the fourth flow path and the first end of the fifth flow path, the second end of the fourth flow path is connected to the third valve port of the four-way valve, the fourth valve port of the four-way valve is connected to the trachea valve, and the second end of the fifth flow path is connected to the suction port of the compressor.

2. The air conditioner outdoor unit testing method according to claim 1, characterized in that: The first electronic expansion valve and the second electronic expansion valve are opened and operated with a maximum number of steps.

3. The air conditioner outdoor unit testing method according to claim 1, characterized in that: The operating frequency of the outdoor fan is between 20 Hz and 40 Hz.

4. The air conditioner outdoor unit testing method according to claim 1, characterized in that: When the exhaust pressure of the compressor is stable within a first preset deviation range and the suction pressure of the compressor is stable within a second preset deviation range, the preset test parameters are detected.

5. The air conditioner outdoor unit testing method according to claim 1, characterized in that: Before forming a refrigerant circulation loop among the compressor, condenser and subcooler of the air-conditioning outdoor unit, the air-conditioning outdoor unit testing method further comprises: controlling a filling machine to fill the air-conditioning outdoor unit with the first preset filling amount of refrigerant; And / or, when the preset test parameters are determined to be qualified, the air-conditioning outdoor unit testing method further includes: controlling the filling machine to fill the air-conditioning outdoor unit with a second preset filling amount of refrigerant so that the total filling amount of the refrigerant in the air-conditioning outdoor unit reaches the rated filling amount.

6. The air conditioner outdoor unit testing method according to claim 5, characterized in that: The first preset filling amount is between 10% and 50% of the rated filling amount.

7. The air conditioner outdoor unit testing method according to any one of claims 1 to 6, characterized in that: After the compressor is started, it will gradually increase the frequency to the target frequency at the preset intervals; And / or, the compressor operates at a preset compression ratio, and the preset compression ratio is between 2 and 6.

8. The air conditioner outdoor unit testing method according to claim 7, characterized in that: The preset interval frequency is between 5 Hz and 10 Hz; And / or, the target frequency is between 50 Hz and 60 Hz.

9. The air conditioner outdoor unit testing method according to claim 7, characterized in that: During the process of the compressor operating at the preset interval frequency and gradually increasing to the target frequency, the preset interval frequency is increased in each frequency increase stage, and the preset operating time of multiple frequency increase stages is gradually decreased.

10. Air conditioner outdoor unit test system, characterized in that: The invention comprises a test system having a circuit board, wherein the circuit board is provided with a processor and a memory, wherein the memory stores a computer program, and when the computer program is executed by the processor, each step of the air conditioner outdoor unit test method described in any one of claims 1 to 9 is implemented.

11. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, each step of the air conditioner outdoor unit testing method according to any one of claims 1 to 9 is implemented.

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