OPERATION TERMINAL, PROGRAM, AND FAILED COMPONENT IDENTIFICATION SYSTEM

Abstract

A display control unit is configured to, when a communication unit comes into communication with an air conditioner, display a quick operation instruction icon on a display unit, the quick operation instruction icon being enabled to instruct the air conditioner to execute a quick operation for identifying a failed section. The display control unit displays, upon acquiring information of a failed section identified based on the quick operation, the failed section and an identifying operation instruction icon on the display unit, the identifying operation instruction icon being enabled to instruct the air conditioner to execute an identifying operation for identifying a failed component that is a cause of a failure in the failed section.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims the benefit of priority to Japanese Patent Application Number 2025-015353 filed on January 31, 2025. The entire contents of the above-identified application are hereby incorporated by reference.

BACKGROUND OF THE INVENTION

1. Technical Field

The following disclosure relates to an operation terminal, a program, and a failed component identification system.

2. Description of the Related Art

When a request for a service such as repair of an air conditioner is received from a user, a worker makes an on-site visit to check for a failure or a component requiring maintenance, and provides a repair or maintenance service. In recent years, having been developed to improve the efficiency of such services is a technique for determining a cause of trouble on the basis of information on the operation of the air conditioner, and displaying the sequence of necessary tasks onto an operation terminal, such as a mobile terminal. For example, JP 2016-133294 A discloses a system including a mobile terminal and a management server configured to transmit and to receive information including information on the condition of the operation of an air conditioner and information about the sequence of tasks for fixing a faulty part of the operation.

SUMMARY OF THE INVENTION

Before a worker provides a repair service, to investigate for and to identify a component or the like causing the trouble, the worker may actually put the air conditioner into an operation and check such a component on the site. However, because there are various causes of trouble in the air conditioner, what type of information is to be acquired by running what kind of operation depends greatly on the situation. Therefore, when an unskilled worker provides a repair service, the worker may make unnecessary operations or unnecessary replacements of components, and there are concerns about a delay of the work and an increase in cost.

An object of the present disclosure is to provide an operation terminal with which a worker can easily provide a repairing or maintenance service to an air conditioner, regardless of the experience or the skill of the worker. Another object of the present disclosure is to provide a program for causing a computer included in an operation terminal to function, and to provide a failed component identification system including the operation terminal.

An operation terminal according to one aspect of the present disclosure includes: a communication unit configured to communicate with an air conditioner; a display unit configured to display various types of information; and a display control unit configured to control display of the display unit. When the communication unit comes into communication with the air conditioner, the display control unit displays a quick operation instruction icon on the display unit, the quick operation instruction icon being enabled to instruct the air conditioner to execute a quick operation for identifying a failed section, and, upon acquiring information of a failed section identified based on the quick operation, the display control unit displays the failed section and an identifying operation instruction icon on the display unit, the identifying operation instruction icon being enabled to instruct the air conditioner to execute an identifying operation for identifying a failed component that is a cause of a failure in the failed section.

A program according to another aspect of the present disclosure is a program for causing a computer included in the operation terminal to function as the display control unit.

A failed component identification system according to another aspect of the present disclosure includes an air conditioner, the operation terminal, and a server that comes into communication with at least one of the air conditioner and the operation terminal via a network.

According to the present disclosure, it is possible to provide an operation terminal with which a worker can easily provide a repairing or maintenance service to an air conditioner, regardless of the experience or the skill of the worker. Furthermore, according to the present disclosure, it is also possible to provide a program for causing a computer included in the operation terminal to function, and a failed component identification system including the operation terminal.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a block diagram illustrating an example of a configuration of a failed component identification system 1, and exchanged information according to a first embodiment;

FIG. 2 is a block diagram illustrating an example of a configuration of an operation terminal 10;

FIG. 3 is a block diagram illustrating an example of a configuration of an air conditioner 20;

FIG. 4 is a block diagram illustrating an example of a configuration of a server 30;

FIG. 5 is a schematic illustrating an example of an image (image for a quick diagnosis) displayed on the display unit 13 of the operation terminal 10 before the execution of a quick operation;

FIG. 6 is a schematic illustrating an example of an image displayed on the display unit 13 of the operation terminal 10 during the execution of the quick operation;

FIG. 7 is a schematic illustrating an example of an image displayed on the display unit 13 of the operation terminal 10 after the execution of the quick operation;

FIG. 8 is a schematic illustrating an example of an image (image for a detailed diagnosis) displayed on the display unit 13 of the operation terminal 10 after the execution of the quick operation and before the execution of an identifying operation;

FIG. 9 is a schematic illustrating an example of an image displayed on the display unit 13 of the operation terminal 10 after the execution of the identifying operation corresponding to a failed component candidate;

FIG. 10 is a schematic illustrating another example of an image displayed on the display unit 13 of the operation terminal 10 after the execution of the identifying operation corresponding to the failed component candidate;

FIG. 11 is a schematic illustrating an example of an image displayed on the display unit 13 of the operation terminal 10 after the execution of a post-repair diagnostic operation;

FIG. 12 is an example of a flowchart for explaining control or the like of the quick operation;

FIG. 13 is an example of a flowchart for explaining control or the like of the identifying operation; and

FIG. 14 is an example of an image displayed on the display unit 13 of the operation terminal 10 when a failed component or the like in an outdoor-unit power source is identified only by running a quick operation, in a modification of the first embodiment.

DETAILED DESCRIPTION

Embodiments of the operation terminal 10 and the like according to the present disclosure will now be explained with reference to the drawings. The present disclosure is not limited to the description in the following embodiments, and designs may be changed as appropriate, within a scope in which the configuration according to the present disclosure is satisfied. In the drawings, the same or equivalent elements are denoted by the same reference signs, and redundant description will be omitted. In the drawings, only main parts are illustrated. The following description will focus on main parts and parts relevant to the present disclosure.

In the description herein, the process of identifying a failed section by running a quick operation will be referred to as a quick diagnosis, and the process of identifying a failed component by running an identifying operation will be referred to as a failed component diagnosis.

First Embodiment

This embodiment relates to a failed component identification system 1 including an air conditioner 20, an operation terminal 10, and a server 30 that communicates with at least one of the air conditioner 20 and the operation terminal 10 via a network (see FIG. 1). FIG. 1 is a block diagram illustrating an example of a configuration of the failed component identification system 1 and exchanged information according to this embodiment, and FIGS. 2, 3, and 4 are block diagrams illustrating examples of configurations of the operation terminal 10, the air conditioner 20, and the server 30, respectively.

The air conditioner 20 is a device that performs operations of conditioning the air (also referred to as an air conditioning operation). As illustrated in FIG. 3, the air conditioner 20 includes a communication unit 21, a control unit 22, an air-conditioning unit 23, an operation mode table 24, and a sensor unit 25.

The air-conditioning unit 23 adjusts the temperature of the air, and blows out the air. An example of the air conditioner 20 is a split air conditioner. A split air conditioner includes an indoor unit and an outdoor unit. An indoor heat exchanger and an indoor fan, which are elements of the air-conditioning unit 23, are provided to the indoor unit. A four-way valve, a compressor, an outdoor heat exchanger, an expansion valve, and an outdoor fan, which are also elements of the air-conditioning unit 23, are provided to the outdoor unit. These elements, which are the indoor heat exchanger, the four-way valve, the compressor, the outdoor heat exchanger, and the expansion valve, are connected with one another by a refrigerant pipe, to form a circuit. The circuit permits high-temperature or low-temperature refrigerant to flow through the indoor heat exchanger. The indoor fan allows the air to pass through the indoor heat exchanger and to exchange heat with the refrigerant flowing through the indoor heat exchanger, and blows the air having exchanged heat out of the indoor unit. The outdoor fan allows the air to pass through the outdoor heat exchanger and to exchange heat with the refrigerant flowing through the outdoor heat exchanger.

The communication unit 21 enables communication between the air conditioner 20 and an external device (e.g., the operation terminal 10 or the server 30). The communication unit 21 includes, for example, one or both of wired and wireless interfaces for communicating with an external device over a communication line (also referred to as a network) such as a local area network (LAN), a wide area network (WAN), the Internet, or a telephone circuit. Note that the communication unit 21 may include, for example, an interface related to a wireless (near field) communication technology such as Bluetooth (registered trademark), near-field communication (NFC), Wi-Fi (registered trademark), ZigBee (registered trademark), Irda, or wireless USB.

The control unit 22 controls the operation of each of the units included in the air conditioner 20, in response to an operation instruction from a worker, a user, or the like. The air-conditioning unit 23 can execute air conditioning operations such as cooling, heating, air-blowing, dehumidification, and air-purifying operations, under the control of the control unit 22. The operation mode table 24 is implemented on a storage device such as a random-access memory (RAM), a hard disk drive (HDD), a solid-state drive (SSD), or a read-only memory (ROM), for example, and stores therein operation modes. The operation mode includes information such as a set temperature, an operation type (e.g., cooling, heating, air-blowing, dehumidification, or air purification), a mode (e.g., automatic mode, wind power setting mode, power-saving operation mode), power-on (start the operation), and power-off (stop). The sensor unit 25 can measure temperature, humidity, and the like.

As illustrated in FIG. 4, the server 30 includes a communication unit 31, an operation log storage unit 32, and a determination unit 33.

The communication unit 31 enables communication between the server 30 and an external device (e.g., the operation terminal 10 or the air conditioner 20). The communication unit 31 includes the interface described above, for example.

The operation log storage unit 32 is implemented as a storage device examples of which have been listed above, and stores therein operation log information of the air conditioner 20.

The determination unit 33 includes one or more processors (such as CPUs), and makes various kinds of determination on the basis of information received from the operation terminal 10 or the air conditioner 20, and on various programs. The determination unit 33 includes a quick diagnosis determination unit 331 configured to make a diagnosis of (determines) a failed section on the basis of operation data of a quick operation, to be described later, and a failed component determination unit 332 configured to determine a failed component that is the cause of the failure on the basis of the operation data of an identifying operation, to be described later.

The operation terminal 10 is a communication terminal that is operable by a worker or the like, and is a mobile terminal that is portable, for example. Specific examples of the operation terminal 10 include a smartphone and a tablet. As illustrated in FIG. 2, the operation terminal 10 includes a communication unit 11, a display unit 13, and a display control unit 12. The operation terminal 10 may further include a recording unit (not illustrated) configured to record operation log information (e.g., including operation data of the quick operation and the identifying operation).

The communication unit 11 enables communication between the operation terminal 10 and an external device (e.g., the air conditioner 20 or the server 30). The communication unit 11 includes the interface described above, for example. In this embodiment, the operation terminal 10 can communicate with each of the air conditioner 20 and the server 30 via the communication unit 11 (see FIG. 1).

The display unit 13 can display various types of information under the control of the display control unit 12. The display unit 13 is implemented as a liquid crystal display (LCD) or an organic electroluminescent (EL) display, for example, and may also be a touch panel.

The display control unit 12 controls display of the display unit 13. The display control unit 12 includes one or more processors (such as central processing units (CPUs)).

Specific control performed by the display control unit 12, information displayed by the display unit 13, and the like will be explained specifically with reference to FIGS. 1 and 5 to 13.

The following example assumes that the operation terminal 10 is a smartphone with an application for operating the air conditioner 20 installed thereon. The air conditioner 20 is a split air conditioner including the indoor unit and the outdoor unit.

FIG. 5 is a schematic illustrating an example of an image (image for a quick diagnosis) displayed on the display unit 13 of the operation terminal 10 before the execution of a quick operation. FIG. 6 is a schematic illustrating an example of an image displayed on the display unit 13 of the operation terminal 10 during the execution of the quick operation. FIG. 7 is a schematic illustrating an example of an image displayed on the display unit 13 of the operation terminal 10 after the execution of the quick operation. FIG. 8 is a schematic illustrating an example of an image (image for a detailed diagnosis) displayed on the display unit 13 of the operation terminal 10 after the execution of the quick operation and before the execution of an identifying operation. FIGS. 9 and 10 are schematics illustrating examples of images displayed on the display unit 13 of the operation terminal 10 after the execution of the identifying operation corresponding to a failed component candidate. FIG. 11 is a schematic illustrating an example of an image displayed on the display unit 13 of the operation terminal 10 after the execution of a post-repair diagnostic operation. FIG. 12 is an example of a flowchart for explaining control or the like of the quick operation. FIG. 13 is an example of a flowchart for explaining control or the like of the identifying operation. In FIGS. 12 and 13, the vertical axis represents time, and each number appended with t represents a point in time.

When the communication unit 11 comes into communication with the air conditioner 20, the display control unit 12 in the operation terminal 10 displays an image for a quick diagnosis, on the display unit 13. The state in which "the communication unit 11 comes into communication with the air conditioner 20" only needs to be a state in which the operation terminal 10 and the air conditioner 20 can communicate with each other, regardless of whether there is any actual communication of information. For example, the point in time at which the worker starts the operation terminal 10 and the air conditioner 20, and enables the operation terminal 10 and the air conditioner 20 to communicate with each other corresponds to the state in which "the communication unit 11 comes into communication with the air conditioner 20".

The image for a quick diagnosis includes: a display area 41 for displaying the name of the model of the air conditioner 20; a display area 42 for displaying the total time of the quick operation (also referred to as log acquisition time); a display area 43 for displaying symptoms of trouble in a selectable and determinable manner; a display area 44 for displaying a quick operation instruction icon A; a display area 45 configured to display various types of information for the worker; a display area 46 for displaying the result of a quick diagnosis; a display area 47 for displaying a detailed diagnosis screen transition icon; and a display area 48 for displaying that a quick diagnosis with the quick operation is executable (see FIG. 5).

The quick operation instruction icon A is an icon (display button) enabled to instruct the air conditioner 20 to execute a quick operation for identifying a failed section. In FIG. 5, "START" is indicated on the quick operation instruction icon A, to visually aid the worker in giving the instruction for starting the quick operation. The display area 45 is enabled to display a link to a report of a diagnosis result, a caution for the worker, or the like.

The display control unit 12 preferably displays a symptom selection unit enabled to change the operation mode of the quick operation in accordance with a selected symptom of the air conditioner 20, on the display unit 13 (e.g., in the display area 43 in FIG. 5). The symptom selection unit can selectively display symptoms of trouble in the air conditioner 20, such as "not cooling/not warming" or "power does not turn on" as a pull-down list. The worker can select a symptom of trouble from the pull-down list, on the basis of failure information of the air conditioner 20, e.g., error-log information and information having been acquired from the user in advance. The operation terminal 10 or the server 30 stores therein a quick operation mode (e.g., an operation type, a section to be diagnosed, and the sequence of diagnosis) corresponding to each symptom of trouble, in a storage unit (not illustrated), for example. When the worker selects a symptom, the quick operation mode corresponding to the selected symptom is set to the air conditioner 20 from the storage unit (not illustrated). When the worker then taps on the quick operation instruction icon A, the operation terminal 10 instructs the air conditioner 20 to start the quick operation in the operation mode corresponding to the selected symptom. When the worker selects a symptom from the symptom selection unit in the display area 43, preferably, a plurality of failed section candidates presented in the display area 461, to be described later, are changed in accordance with the specific operation mode corresponding to the selected symptom.

A failed section in the air conditioner 20 can be estimated, to some extent, from the symptom of trouble, on the basis of past failure records and the like of the air conditioner 20. Therefore, by causing the air conditioner 20 to run a quick operation in the operation mode corresponding to a symptom of trouble, the time required for the quick diagnosis can be reduced. The failure records or the like of the air conditioner include at least one of operation log information of the air conditioner 20, error log information corresponding to an operation log, and information of repair history. In the manner described above, the operation terminal 10 or the server 30 may be configured to automatically determine the operation mode in which the quick operation is to be executed in response to the worker tapping on the quick operation instruction icon A, on the basis of the failure records or the like of the air conditioner 20. In such a case, the operation terminal 10 or the server 30 preferably stores the operation mode of the quick operation corresponding to each symptom of trouble in a storage unit (not illustrated) or the like. In such a configuration for automatically determining the operation mode of the quick operation to be executed in response to the worker tapping on the quick operation instruction icon A on the basis of the records of failure of the air conditioner 20, too, preferably, a plurality of failed section candidates displayed in the display area 461, to be described later, are changed in accordance with a specific operation mode determined.

When the communication unit 11 comes into communication with the air conditioner 20, the display control unit 12 preferably displays a plurality of failed section candidates that are identifiable by the quick operation, on the display unit 13. In FIG. 5, a plurality of failed section candidates are displayed in the display area 46. For example, when the communication unit 11 comes into communication with the air conditioner 20, the display control unit 12 may display the quick operation instruction icon A and a plurality of failed section candidates at the same time, or with a time lag, on the display unit 13. Preferably, the operation terminal 10 or the server 30 selects and determines the failed section candidates corresponding to a symptom of trouble on the basis of information such as past records of failure of the air conditioner, stored in a recording unit (not illustrated), for example.

From the viewpoint of improving the operability for the worker and reducing the time required for the quick diagnosis, preferably, the plurality of failed section candidates are displayed in the ascending order of time required for identifying the candidate as the failed section, from when the quick operation is executed (that is, the time required for the quick diagnosis). The operation terminal 10 or the server 30 preferably stores approximations of the time to be required in the respective quick diagnoses, in a storage unit (not illustrated) or the like. Furthermore, it is preferable for the display control unit 12 to, upon receiving information on the failed section, display whether a failed section candidate displayed on the display unit 13 is the failed section, in the order in which the information on the failed section is received. In this manner, the worker can easily recognize the failed section candidate for which the quick diagnosis has finished, visually, so that the time required for the work can be reduced. In consideration of further improvement in the operability for the worker, preferably, a failed section candidate display area 46, where the plurality of failed section candidates are displayed, is positioned below the quick operation instruction icon A in the display unit 13.

In FIG. 5, the failed section candidate display area 46 for displaying a plurality of failed section candidates is positioned below the display area 44 for displaying the quick operation instruction icon A. The failed section candidate display area 46 includes a display area 461 for displaying a plurality of failed section candidates for which abnormality can be identified by running a quick operation, and a display area 462 for displaying the result of determining whether each of the candidates is the failed section. Each of the candidates displayed in the display area 461 is in one-to-one correspondence with one of the determination results displayed in the display area 462. For example, the determination result for the candidate displayed at the top in the display area 461 in FIG. 5 (reference numeral 4611 in FIG. 6) is displayed at the top in the display area 462 (reference numeral 4621 in FIG. 6). Furthermore, from the viewpoint of improving the convenience for the worker, the display control unit 12 may display an approximation of time required for running a quick diagnosis on each of the failed section candidates (see the display area 461 in FIG. 5), on the display unit 13.

The display area 461 displays the candidates in the ascending order of the lengths of time required for the respective candidates to be identified as failed sections from when the quick operation is executed (that is, the ascending order of time required in the quick diagnosis) and in the descending order of the priorities at which the candidates need to be identified as failed sections, for the purpose of identifying another as a failed section. Once a quick operation is executed, the determination results are displayed in the display area 461, sequentially from the candidate at the top. As an example of the plurality of failed section candidates, in FIG. 5, an indoor-unit power source, an indoor-unit side thermistor (referred to as an indoor TH), an outdoor-unit side thermistor (referred to as an outdoor TH), an outdoor-unit power source, a compressor, and the other circuit portion are displayed sequentially from the top (see also display areas 4611 to 4616 in FIG. 6).

The indoor-unit power source is a failed section candidate related to the power supply to the elements of the indoor unit. When the indoor-unit power source is the failed section, it is indicated that no power is supplied to the elements of the indoor unit, and none of the elements of the indoor unit operate. The indoor-unit side thermistor is a failed section candidate related to various kinds of temperature sensors provided to the indoor unit. When the indoor-unit side thermistor is the failed section, it is indicated that at least one temperature sensor provided to the elements of the indoor unit is not detecting the temperature properly. The outdoor-unit side thermistor is a failed section candidate related to various kinds of temperature sensors provided to the outdoor unit. When the outdoor-unit side thermistor is the failed section, it is indicated that at least one temperature sensor provided to the elements of the outdoor unit is not detecting the temperature properly. The compressor is one of the devices forming the circuit. When the compressor is the failed section, it is indicated that the refrigerant is not passed properly from the compressor to each element of the circuit. The other circuit portion is a failed section candidate related to the circuit components other than the compressor. When the other circuit portion is the failed section, it is indicated that there is an abnormality in at least one of the components of the circuit, other than the compressor.

When the worker W instructs the operation terminal 10 to execute a quick operation by tapping on the quick operation instruction icon A illustrated in FIG. 5 (step S1 in FIG. 12), for example, the operation terminal 10 receives the instruction, and instructs the air conditioner 20 to execute the quick operation ("a" in FIG. 1, and step S2 in FIG. 12). Upon receiving the instruction, the air conditioner 20 executes a quick operation on each of the candidates being displayed in the failed section candidate display area 46, or for two or more candidates, if such candidates can be diagnosed simultaneously (step S3 in FIG. 12).

One example of the operation mode of the quick operation is an operation including an air blowing operation, with the rotation speed of the indoor fan set to a predetermined rotation speed, but without driving the circuit, for a predetermined time length, followed by a cooling operation, with the rotation speed of the indoor fan set to a predetermined rotation speed, while driving the circuit, for a predetermined time length.

For example, when it is determined that the indoor fan is not driving during the air blowing operation executed by the quick operation, the display control unit 12 displays that the indoor-unit power source is abnormal in the display area 461. When there is no abnormality in the indoor-unit power source but the indoor TH has detected an abnormal value during the air blowing operation executed by the quick operation, the display control unit 12 displays that the indoor TH is abnormal in the display area 461. When there is no abnormality in the indoor-unit power source but the outdoor TH has detected an abnormal value during the cooling operation executed by the quick operation, the display control unit 12 displays that the outdoor TH is abnormal in the display area 461. When none of the indoor-unit power source, the outdoor TH, and the indoor TH exhibit an abnormality but there is an abnormality in the power input to the outdoor unit during the cooling operation executed by the quick operation, the display control unit 12 displays that the outdoor-unit power source is abnormal in the display area 461. One example of a case in which there is an abnormality in the power input to the outdoor unit is, for example, a case in which the DC voltage input to the outdoor unit exhibits an abnormal value. When none of the indoor-unit power source, the outdoor TH, the indoor TH, and the outdoor-unit power source are abnormal but it is detected that the compressor is not rotating during the cooling operation executed by the quick operation, the display control unit 12 displays that the compressor is abnormal in the display area 461. When none of the indoor-unit power source, the outdoor TH, the indoor TH, the outdoor-unit power source, and the compressor are abnormal, but the outdoor TH or the indoor TH detects an abnormal temperature in some part of the circuit, during the cooling operation executed by the quick operation, the display control unit 12 displays, in the display area 461, that the other circuit portion, that is, the circuit excluding the compressor is abnormal.

When one of the failed section candidates in the failed section candidate display area 46 is determined to be abnormal, the failed section candidates below the failed section candidate are not determined to be normal. For example, if the outdoor-unit power source is determined to be abnormal, the compressor is not determined to be normal. As long as there is any abnormality in the power input to the outdoor unit, it is not possible to determine whether the compressor is not rotating due to the lack of input of power or due to the abnormality in the compressor itself.

When a quick operation is started, the air conditioner 20 transmits the operation data of the quick operation to the operation terminal 10 ("b" in FIG. 1 and step S4 in FIG. 12). The operation data of the quick operation includes: information such as specifics of the quick operation, the duration of the execution of the quick operation, information related to the air conditioner 20 acquired from the sensor during the execution of the quick operation; information related to a failed section that is a failed section candidate determined to be abnormal during the execution of the quick operation; and other information such as an operation result of the air conditioner 20 during the execution of the quick operation. The operation terminal 10 records the operation data received from the air conditioner 20 in a recording unit (not illustrated) as operation log information (step S5 in FIG. 12), and transmits the operation log information to the server 30 ("c" in FIG. 1 and step S6 in FIG. 12). The air conditioner 20 may transmit the operation data corresponding to the quick operation to the operation terminal 10 all at once, after the end of the quick operation, or may transmit the operation data to the operation terminal 10 as appropriate, during the quick operation.

The quick diagnosis determination unit 331 in the server 30 identifies the failed section, from the failed section candidates having been determined as abnormal, on the basis of the operation data received from the operation terminal 10. When one of the failed section candidates in the failed section candidate display area 46 is determined to be abnormal, the failed section candidates below the failed section candidate are not determined to be normal. Therefore, among the failed section candidates having been determined to be abnormal, the failed section candidate at the top in the failed section candidate display area 46 is identified as the failed section.

The server 30 identifies failed component candidates from the identified failed section. The failed component candidates are components included in the identified failed section. Furthermore, to identify a failed component from the identified failed component candidates, the server 30 determines (selects) the operation mode to be used for an identifying operation corresponding to the identified failed component candidates (step S7 in FIG. 12). For example, the quick diagnosis determination unit 331 in the server 30 determines the operation mode for the identifying operation, by which a failed component needing to be repaired or replaced is identified, on the basis of the received operation data. To determine the operation mode of the identifying operation, the records of past failures or the like of the air conditioner 20 provided in the operation log storage unit 32 may be further used. The server 30 transmits the determined details of the operation mode of the identifying operation (details of the diagnosis) to the operation terminal 10 ("d" in FIG. 1 and step S8 of FIG. 12). When the operation terminal 10 receives the determined details from the server 30, the display control unit 12 displays display on the display unit 13, on the basis of the determination result (step S9 in FIG. 12).

When there are a plurality of failed component candidates that can be identified by an identifying operation, the server 30 may determine a plurality of operation modes for the identifying operation, so as to identify a failed component from the plurality of failed component candidates.

FIG. 6 is a schematic illustrating an example of an image displayed on the display unit 13 of the operation terminal 10 during the execution of the quick operation. The display control unit 12 may display that the quick operation is currently being executed in the display area 48 so that the worker can easily recognize the current state, visually. In FIG. 6, a quick diagnosis has been performed for each of the candidates (indoor fan, indoor TH, and outdoor TH) displayed in the display areas 4611 to 4613, respectively, and determination results being all "normal" are displayed in the display areas 4621 to 4623, respectively, corresponding to the respective display areas 4611 to 4613. At the time point illustrated in FIG. 6, because the quick operation for the candidate (outdoor-unit power source) displayed in the next display area 4614 is being currently executed, "CURRENTLY DETERMINING" is displayed in the display area 4624 corresponding to the display area 4614.

Preferably, the display control unit 12 displays a stop indicator B enabled to give an instruction for stopping the quick operation, on the display unit 13. The worker can stop the quick operation of the air conditioner 20 by tapping on the stop indicator B during the quick operation. In FIG. 6, the stop indicator B is displayed in the display area 44 where the quick operation instruction icon A has been displayed, so as to aid the worker in making the operation. In other words, the quick operation instruction icon A may be replaced with the stop indicator B when the quick operation is started. In the display area 44, "END" is displayed on the stop indicator B so as to visually aid the worker in making the operation.

More specifically, FIG. 7 illustrates one example of an image displayed on the display unit 13 when no abnormality is found in any of the candidates displayed in the display areas 4611 to 4615 in the failed section candidate display area 46, but some abnormality is found for the candidate displayed in the next display area 4616 (the other circuit portion). On the display unit 13, an icon 49 for transitioning to a screen including an identifying operation instruction icon C, to be described later, is displayed. On the icon 49, characters "FAILED COMPONENT DIAGNOSIS" are displayed so that the worker can visually recognize, easily. When the worker taps on this icon 49, the screen transitions to the screen illustrated in FIG. 8, for example.

When the icon 49 is tapped, the display control unit 12 displays an image for a detailed diagnosis, on the display unit 13. FIG. 8 illustrates an example of the image for a detailed diagnosis, displayed on the display unit 13. The image for a detailed diagnosis includes: the display area 41 for displaying the model name of the air conditioner 20; the display area 42 for displaying the total time required for the quick operation and the identifying operation (also referred to as log acquisition time); the display area 43 for displaying symptoms of trouble such in a selectable and determinable manner; the display area 44 for displaying the stop indicator B for stopping the identifying operation when an instruction for executing the identifying operation has been given; the display area 45 configured to display various types of information for the worker; the display area 48 for displaying that detailed diagnosis with the identifying operation is executable; a display area 51 for displaying the failed section; a display area 52 for displaying information for executing the identifying operation; and the identifying operation instruction icon C enabled to give the air conditioner 20 an instruction about specifics of the operation mode of the identifying operation, the specifics being received from the server 30.

In the image for a detailed diagnosis displayed on the display unit 13, preferably, the positions of the display area 41 for displaying the model name of the air conditioner 20, the display area 42 for displaying the total time required for the quick operation and the identifying operation, the display area 44 for displaying the stop indicator B for stopping the identifying operation when an instruction for executing the identifying operation has been given, the display area 45 for displaying various types of information for the worker, and the display area 48 for displaying that detailed diagnosis with an identifying operation is executable are in correspondence with the positions of the display area 41 for displaying the model name of the air conditioner 20, the display area 42 for displaying the total time required for the quick operation, the display area 44 for displaying the stop indicator B for stopping the quick operation after an instruction for executing the quick operation has been given, the display area 45 for displaying various types of information for the worker, and the display area 48 for displaying that quick diagnosis with the quick operation is executable, respectively, in the image for a quick diagnosis displayed on the display unit 13. By ensuring the correspondence between the areas for displaying the same type of information, the worker can easily execute the operation.

The display control unit 12 displays the failed section identified by the quick operation, in the display area 51 of the image for a detailed diagnosis. The display area 51 for displaying the failed section is positioned below the display area 48 for displaying that the detailed diagnosis by the identifying operation is executable. In FIG. 8, "OTHER CIRCUIT PORTION" is displayed as the failed section identified by the quick operation.

The display control unit 12 displays information related to the identifying operation to be executed, in the display area 52 of the image for a detailed diagnosis. The information displayed in the display area 52, where the information for executing the identifying operation is displayed, includes a display area 5211, 5212 for displaying the name of an identifying operation, and a display area 5221, 5222 for displaying the identifying operation instruction icon C enabled to give an instruction for the identifying operation.

The identifying operation instruction icon C is an icon (display button) enabled to give the air conditioner 20 an instruction of the operation mode of the identifying operation, by which the failed component is identified, from the failed component candidates corresponding to the failed section. In FIG. 8, "START" is indicated on the identifying operation instruction icon C so as to visually aid the worker in making the operation (see the display areas 5221, 5222). The display control unit 12 may display the failed section and the identifying operation instruction icon C simultaneously, or with a time lag, on the display unit 13.

The names of the identifying operations displayed in the respective display areas 5211, 5212 correspond to the operation modes of the identifying operations for which instructions can be issued via the respective identifying operation instruction icons C that are displayed in the respective display areas 5212, 5222 corresponding thereto.

In the server 30, when there are a plurality of failed component candidates, and a plurality of identifying operation modes have been determined (selected) as the identifying operation, it is preferable for the display control unit 12 to display a plurality of identifying operation instruction icons C correspondingly to the plurality of respective failed component candidates, on the display unit 13.

For example, in the display area 4626 included in the image for a quick diagnosis in FIG. 7, characters "ABNORMALITY FOUND" are displayed correspondingly to the candidate displayed in the display area 4616 (the other circuit portion). When the "OTHER CIRCUIT PORTION" is identified as the failed section, the server 30 identifies the expansion valve and the four-way valve as the failed component candidates, for example. When the failed component candidate is the expansion valve, the server 30 identifies an expansion-valve failure diagnosis mode, as the operation mode of the identifying operation for identifying the failed component. When the failed component candidate is the four-way valve, the server 30 identifies a four-way-valve failure diagnosis mode, as the operation mode of the identifying operation for identifying the failed component.

In the image for a detailed diagnosis illustrated in FIG. 8, characters of "EXPANSION VALVE FAILURE DIAGNOSIS" corresponding to the expansion-valve failure diagnosis mode, and characters of "FOUR-WAY VALVE FAILURE DIAGNOSIS" corresponding to the four-way-valve failure diagnosis mode are displayed in the display area 5211 and the display area 5212, respectively. The icons C enabled to give instructions for the identifying operations on the candidates displayed in the respective display areas 5211, 5212 are displayed in the respective display areas 5221, 5222. Therefore, in FIG. 8, from the identifying operation instruction icons C displayed in the respective display areas 5212, 5222, the instructions for the identifying operations in the expansion-valve failure diagnosis mode and the four-way-valve failure diagnosis mode can be given, respectively. Although not illustrated, when there are a plurality of failed component candidates that are candidates of a failed component, the display control unit 12 preferably displays a plurality of identifying operation instruction icons C corresponding to a plurality of respective identifying operations, each configured to identify whether corresponding one of the plurality of failed component candidates is a failed component, on the display unit 13.

Preferably, the operation terminal 10 or the server 30 selects and determines a failed component candidate corresponding to each of the failed sections, on the basis of information such as the past failure records of the air conditioner stored in a recording unit (not illustrated), for example.

In the failed component candidate display area 52, where one or more failed component candidates are displayed on the display unit 13, from the viewpoint of shortening the time required for the failed component diagnosis, it is preferable for a plurality of failed component candidates to be displayed in descending order of the likeliness of the component being a failed component. For example, in FIG. 8, the expansion valve and the four-way valve, which are failed component candidates belonging to the other circuit portion, are displayed in the descending order of the likeliness of these components being failed components (see the display area 5211 and the display area 5212). Preferably, the operation terminal 10 or the server 30 determines the degree of likeliness of a component being a failed component on the basis of information such as past failure records of the air conditioner stored in the recording unit, for example.

The display control unit 12 may display that the identifying operation is currently being executed, on the display unit 13, so that the worker can easily recognize the current state, visually (see the display area 48 in FIG. 8). The display unit 13 may further include, for example, the display area 41 for displaying the model name of the air conditioner 20, the display area 42 for displaying the total time of the diagnosis (log acquisition time), the display area 43 for displaying the symptoms of trouble in a selectable and determinable manner, and the display area 45 configured to display various types of information for the worker (see FIG. 8), continuously from the quick operation.

It is also preferable for the display control unit 12 to display the stop indicator B enabled to give an instruction for stopping the identifying operation, on the display unit 13 (see the display area 44 in FIG. 8). The worker can stop the identifying operation being executed on the air conditioner 20, by tapping on the stop indicator B during the identifying operation. The stop indicator B enabled to give an instruction for stopping the quick operation may also serve as a stop indicator B enabled to give an instruction for stopping the identifying operation, to improve the operability for the worker. For example, in FIG. 8, even after the quick operation, the stop indicator B (with the indication of "END") remains being displayed on the display unit 13 so that the worker can stop the operation, the determination, and the like being executed any time, by tapping on the stop indicator B at any point of time during the period from when the quick operation is started to when the identifying operation (or the post-repair diagnostic operation) is ended.

The worker W can instruct the operation terminal 10 to execute the identifying operation by tapping on the identifying operation instruction icon C (see the display area 5221) corresponding to the top candidate (expansion valve) among the candidates displayed in the display area 52 illustrated in FIG. 8 (step S11 in FIG. 13), for example. In response to this instruction, the operation terminal 10 instructs the air conditioner 20 to execute the identifying operation ("a" in FIG. 1 and step S12 in FIG. 13). Upon receiving the instruction, the air conditioner 20 executes the identifying operation on each of the candidates displayed in the display area 52 (step S13 in FIG. 13).

The specific operation performed by the identifying operation and the time for which the identifying operation is executed may vary depending on the failed component candidate, as will be described later. Once the identifying operation is started, the air conditioner 20 transmits the operation data of the identifying operation to the operation terminal 10 ("b" in FIG. 1 and step S14 in FIG. 13). The operation data of the identifying operation includes information such as the specifics of the identifying operation, duration of the execution of the identifying operation, information of the air conditioner 20 acquired by sensors during the execution of the identifying operation, and the results of the operation of the air conditioner 20 during the execution of the identifying operation. The operation terminal 10 records the operation data received from the air conditioner 20, as operation log information, in the recording unit (not illustrated) (step S15 in FIG. 13), and transmits the operation log information to the server 30 ("c" in FIG. 1 and step S16 in FIG. 13). On the basis of the operation data received from the operation terminal 10, the failed component determination unit 332 in the server 30 determines whether the candidate having been subjected to the identifying operation is a failed component (step S17 in FIG. 13). The air conditioner 20 may transmit the operation data of the identifying operation to the operation terminal 10 all at once after the identifying operation is finished, or may transmit the operation data of the identifying operation to the operation terminal 10, as appropriate, during the identifying operation.

In FIG. 8, when an instruction for executing the identifying operation is received via the identifying operation instruction icon C in the display area 5221, the air conditioner 20 executes the identifying operation in the expansion-valve failure diagnosis mode corresponding to "EXPANSION VALVE FAILURE DIAGNOSIS" displayed in the display area 5211.

The expansion-valve failure diagnosis mode is an operation mode of the identifying operation for determining whether the expansion valve, which is a failed component candidate corresponding to the circuit as the failed section, is a failed component. In the expansion-valve failure diagnosis mode, for example, the opening of the expansion valve is changed by a large degree, while executing the heating operation at a predetermined temperature setting over a predetermined time. If the temperature of each element of the circuit remains the same even after the opening of the expansion valve is changed by a large degree, the failed component determination unit 332 determines that the expansion valve is a failed component, and the cause of the failure is in the inability to change the opening of the expansion valve, that is, a faulty valve is the cause of the failure. The temperature of each element of the circuit is a temperature detected by the indoor TH or the outdoor TH.

The server 30 then transmits the determination result to the operation terminal 10 ("d" in FIG. 1 and step S18 in FIG. 13). When the operation terminal 10 receives the determination result from the server 30, the display control unit 12 displays display that is based on the determination result, on the display unit 13 (step S19). Preferably, upon acquiring information of a failed component having been identified in the identifying operation, the display control unit 12 displays the failed component on the display unit 13.

More specifically, FIG. 9 illustrates an example of the image displayed on the display unit 13, upon receiving a determination result that the expansion valve is the failed component and that a faulty valve is the cause of the failure, in response to an identifying operation instruction given via the identifying operation instruction icon C in the display area 5221 in FIG. 8.

When a cause of the failure and a failed component are acquired as the determination results, the display control unit 12 displays the cause of the failure and the component to be replaced, in the display area 53. The component to be replaced is determined based on the failed component and the cause of the failure. The component to be replaced may match the failed component identified in a server determination result (the determination result of the server 30). In the display unit 13 illustrated in FIG. 9, characters "FAULTY VALVE" indicating that the cause of the failure is a faulty valve are displayed in the display area 531, and characters "COMPONENT TO BE REPLACED: EXPANSION VALVE" indicating that the component to be replaced is the expansion valve are displayed in the display area 532.

FIG. 10 illustrates, more specifically, an example of the image displayed on the display unit 13 when a determination result that the expansion valve is not a failed component was received in response to an identifying operation instruction given via the identifying operation instruction icon C in the display area 5221 in FIG. 8.

Upon receiving a determination result that the failed component candidate is not a failed component, the display control unit 12 displays, for example, "NORMAL" in the display area 5221, at the position where the identifying operation instruction icon C, for giving an instruction for the identifying operation of the candidate displayed in the display area 5211, has been displayed (see FIG. 10).

When the display control unit 12 acquires a determination result that the failed component candidate is not a failed component, the worker can then instruct the operation terminal 10 to execute an identifying operation, by tapping on the identifying operation instruction icon C displayed in the display area 5222 corresponding to the candidate for which the failed component diagnosis has not been executed yet (see the display area 5212) (step S11 in FIG. 13). The sequence described above is then repeated, and the determination result from the failed component diagnosis for the candidate is then displayed in the display area 5222.

In FIG. 10, when an instruction for executing the identifying operation is given via the identifying operation instruction icon C in the display area 5222, the air conditioner 20 executes the identifying operation in the four-way-valve failure diagnosis mode corresponding to "FOUR-WAY VALVE FAILURE DIAGNOSIS" displayed in the display area 5212.

In the four-way-valve failure diagnosis mode, for example, after performing the cooling operation for a predetermined time, the operation is switched to the heating operation, and the heating operation is performed for a predetermined time. If the switching from the cooling operation to the heating operation fails, the server 30 determines that the four-way valve is a failed component, and the cause of the failure is the faulty valve. If the cooling operation can be switched to the heating operation, the server 30 determines that the four-way valve is normal. The determination as to whether the cooling operation has been switched to the heating operation is made on the basis of the temperatures detected by the indoor TH and the outdoor TH.

Once the failed component is found out as a result of the identifying operation, as illustrated in FIG. 9, the worker W repairs the valve and replaces the control board, for example, on the basis of the display.

After finishing the work such as the repair, the worker causes the air conditioner 20 to perform a post-repair diagnostic operation to confirm whether the cause of the failure has been eliminated. At that time, preferably, an instruction for the operation is given to the air conditioner 20 via the operation terminal 10. Considering the convenience for the worker, the display control unit 12 of the operation terminal 10 preferably displays, upon acquiring the information on the failed component having been identified by the identifying operation, a post-repair diagnostic operation instruction icon D enabled to instruct the air conditioner 20 to execute the post-repair diagnostic operation on the display unit 13 (see the display area 54 in FIG. 9). When the worker taps on the post-repair diagnostic operation instruction icon D, the display control unit 12 is caused to display an image for a post-repair diagnosis (see FIG. 11) on the display unit 13, and the post-repair diagnostic operation is started in the air conditioner 20. The post-repair diagnostic operation is preferably in the same operation mode as the quick operation.

When the post-repair diagnostic operation is finished, the air conditioner 20 transmits the operation data of the post-repair diagnostic operation to the operation terminal 10 ("b" in FIG. 1 and step S4 in FIG. 12). The operation data includes information such as the specifics of the post-repair diagnostic operation, time, and an operation result including information of the failed section that is a failed section candidate having been determined to be abnormal. The operation terminal 10 records the operation data received from the air conditioner 20 in a recording unit (not illustrated) as operation log information (step S5 in FIG. 12), and transmits the operation log information to the server 30 ("c" in FIG. 1 and step S6 in FIG. 12).

When the operation log information is received, the quick diagnosis determination unit 331 of the server 30 identifies the failed section from the failed section candidates determined to be abnormal, on the basis of the operation data received from the operation terminal 10, in the same manner as in the quick diagnosis.

When the failed section is identified, the server 30 identifies failed component candidates from the identified failed section, in the same manner as in the quick diagnosis. The failed component candidates are components included in the identified failed section. Furthermore, to identify a failed component from the identified failed component candidates, the server 30 determines (selects) the operation mode to be used for the identifying operation corresponding to the identified failed component candidate. The server 30 then transmits details of the operation mode of the identifying operation (details of the diagnosis) to the operation terminal 10. In such a case, in the image for a post-repair diagnosis displayed on the display unit 13, the icon 49 for transitioning to the image for an identifying diagnosis is displayed again.

When the failed section is not identified by the quick diagnosis determination unit 331, that is, when it is determined that all the failed section candidates are normal, the server 30 transmits information indicating that all the failed section candidates are normal to the operation terminal 10.

More specifically, FIG. 11 is a schematic illustrating an example of the display unit 13 displaying the image for a post-repair diagnosis, when the operation terminal 10 receives information indicating that all failed section candidates are normal. Because no abnormality is found in any of the failed section candidates, "NORMAL" is displayed (see the display area 462).

The display control unit 12 may display a result display instruction icon E enabled to give an instruction for displaying the result of repair, on the display unit 13 (see the display area 55). For example, the result display instruction icon E may be positioned below the display area 46 for displaying the failed section candidates. The display control unit 12 may also display an icon (not illustrated) enabled to give an instruction for creating and outputting a report of the work, on the basis of the result of the repair, on the display unit 13.

Upon receiving an instruction for executing the post-repair diagnostic operation via the post-repair diagnostic operation instruction icon D, the display control unit 12 preferably displays a warning (not illustrated) for checking whether the repair has been completed, on the display unit 13, before giving the instruction for executing the post-repair diagnostic operation. With this, the worker is prevented from making an erroneous operation on the post-repair diagnostic operation instruction icon D before the repair is completed, so that the efficiency of the work is improved.

Modification of First Embodiment

Depending on the failed section candidate, there are times when a failed component (or a failed component and a cause of the failure) can be identified merely by running a quick operation. In such a case, the display control unit 12 may display the failed component and the like (see the display area 50 in FIG. 14). In other words, in the failed component identification system 1 according to this modification, when the communication unit 11 comes into communication with the air conditioner 20, the display control unit 12 displays the quick operation instruction icon A enabled to instruct the air conditioner 20 to execute the quick operation for identifying the failed section, on the display unit 13. When information on the failed component having been identified by the quick operation is acquired, the display unit 13 displays the failed component.

FIG. 14 is an example of an image displayed on the display unit 13 when a failed component or the like in the outdoor-unit power source is identified only by running a quick operation in this modification. In FIG. 14, the result of running the quick operation on the outdoor-unit power source is displayed in the display area 50. The display area 50 of the display unit 13 indicates that the cause of the failure is in the DC voltage input to the outdoor unit (outdoor-unit DC voltage) (see the display area 501), and that it is desirable to replace the board of the outdoor unit (see the display area 502).

Second Embodiment

In the first embodiment, the failed component identification system 1 including the air conditioner 20, the operation terminal 10, and the server 30 has been described, but it is also possible for the failed component identification system 1 not to include the server 30. This embodiment relates to a failed component identification system 1 including the air conditioner 20 and the operation terminal 10. The failed component identification system 1 according to this embodiment is substantially the same as the failed component identification system 1 according to the first embodiment, except that the server 30 is not provided, and thus redundant description will be omitted.

In this embodiment, the operation terminal 10 includes a determination unit (not illustrated) corresponding to the determination unit 33 included in the server 30 in the first embodiment. The determination unit in the operation terminal 10 includes a quick diagnosis determination unit 331 and a failed component determination unit 332. Furthermore, among the steps related to the quick operation illustrated in FIG. 12, in this embodiment, steps S6 and S8 are omitted, and step S7 is performed by (the control unit of) the operation terminal 10. Furthermore, in this embodiment, among the steps related to the identifying operation illustrated in FIG. 13, steps S16 and S18 are omitted, and step S17 is performed by the operation terminal 10.

For example, it is preferable that each of the communication unit 11 of the operation terminal 10 and the communication unit 21 of the air conditioner 20 includes an interface related to a (near field) wireless communication technology, and is capable of performing (near field) wireless communication with each other, for example.

Third Embodiment

This embodiment relates to a program for causing a computer included in the operation terminal 10 to function as the display control unit 12 provided to the operation terminal 10. The function of the failed component identification system 1 described in the first or second embodiment can be implemented by this program.

The operation terminal 10 includes a computer having at least one control device (for example, a processor) and at least one storage device (for example, a memory) as hardware for executing the program. As a result of causing the control device and the storage device to execute the program, the functions described in the embodiments are implemented.

The program may be recorded not temporarily, but in one or more computer-readable recording media. It is possible for the recording media to be included or not included in the operation terminal 10. In the latter case, the program may be provided to the operation terminal 10 via any wired or wireless transmission medium.

It is also possible for the functions of the display control unit 12 described above to be implemented, in whole or part, by a logic circuit. For example, an integrated circuit having a logic circuit functioning as the display control unit 12 also falls within the scope of the present invention. Furthermore, the functions of the display control unit 12 may also be implemented by a quantum computer, for example.

It is also possible to cause an artificial intelligence (AI) to execute the steps described in the embodiments. In such a case, the AI may operate on the operation terminal 10, or may operate on another device (such as an edge computer or a cloud server).

Although the embodiments of the present disclosure have been described above, the present disclosure is not limited to the embodiments, and may be implemented in various modes within the scope not departing from the gist thereof. In addition, the plurality of elements disclosed in the embodiments described above can be modified as appropriate. For example, some of the entire elements of one embodiment may be added to the elements of another embodiment, or some of the entire elements of one embodiment may be deleted from the embodiment.

Furthermore, the elements are mainly and schematically illustrated in the drawings to facilitate the understanding of the invention, and the thicknesses, the lengths, the numbers, intervals, and the like of the illustrated elements may be different from the actual ones, for convenience in creating the drawings. Furthermore, the configuration of each of the elements described in the embodiments is an example, without limitation to such a particular configuration, and it is needless to say that various modifications are possible within the scope substantially not departing from the effects of the present disclosure.

Claims

1. An operation terminal comprising: a communication unit configured to communicate with an air conditioner; a display unit configured to display various types of information; and a display control unit configured to control display of the display unit, wherein the display control unit displays, when the communication unit comes into communication with the air conditioner, a quick operation instruction icon on the display unit, the quick operation instruction icon being enabled to instruct the air conditioner to execute a quick operation for identifying a failed section; and the display control unit also displays, upon acquiring information of a failed section identified based on the quick operation, the failed section and an identifying operation instruction icon on the display unit, the identifying operation instruction icon being enabled to instruct the air conditioner to execute an identifying operation for identifying a failed component that is a cause of a failure in the failed section.

2. The operation terminal according to claim 1, wherein the display control unit displays, upon acquiring information of a failed component identified by the identifying operation, the failed component on the display unit.

3. The operation terminal according to claim 1, wherein the display control unit displays, when the communication unit comes into communication with the air conditioner, a plurality of failed section candidates that are identifiable by the quick operation, on the display unit.

4. The operation terminal according to claim 3, wherein the plurality of failed section candidates are displayed in an ascending order of time required for each of the plurality of the failed section candidates to be identified as a failed section, from when the quick operation is executed.

5. The operation terminal according to claim 4, wherein the display control unit displays, upon receiving information of a failed section, whether the failed section corresponds to a failed section candidate displayed on the display unit, in an order of reception of information of the failed section.

6. The operation terminal according to claim 5, wherein a failed section candidate display area in which the plurality of failed section candidates are displayed is positioned below the quick operation instruction icon, on the display unit.

7. The operation terminal according to claim 1, wherein the display control unit displays a stop indicator on the display unit, the stop indicator being enabled to give an instruction for stopping the quick operation.

8. The operation terminal according to claim 1, wherein the display control unit displays a symptom selection unit enabled to change an operation mode of the quick operation in accordance with a selected symptom of the air conditioner, on the display unit.

9. The operation terminal according to claim 1, wherein, when there are a plurality of failed component candidates that are candidates of the failed component, the display control unit displays a plurality of the identifying operation instruction icons corresponding to a plurality of respective identifying operations each configured to identify whether corresponding one of the plurality of failed component candidates is the failed component, on the display unit.

10. The operation terminal according to claim 1, wherein the display control unit displays, upon acquiring information of a failed component identified by the identifying operation, a post-repair diagnostic operation instruction icon on the display unit, the post-repair diagnostic operation instruction icon being enabled to give an instruction for a post-repair diagnostic operation to the air conditioner.

11. The operation terminal according to claim 10, wherein the display control unit displays, upon receiving an instruction for executing the post-repair diagnostic operation via the post-repair diagnostic operation instruction icon, a warning for checking whether repair has been completed, on the display unit, before giving the instruction for executing the post-repair diagnostic operation.

12. The operation terminal according to claim 10, wherein the post-repair diagnostic operation takes a same operation mode as the quick operation.

13. A non-transitory computer-readable medium storing a program for causing a computer included in the operation terminal according to claim 1 to function as the display control unit.

14. A failed component identification system comprising: an air conditioner; the operation terminal according to claim 1; and a server configured to communicate with at least one of the air conditioner and the operation terminal over a network.

15. A failed component identification system comprising: an air conditioner; the operation terminal according to claim 2; and a server configured to communicate with at least one of the air conditioner and the operation terminal over a network.

16. A failed component identification system comprising: an air conditioner; the operation terminal according to claim 3; and a server configured to communicate with at least one of the air conditioner and the operation terminal over a network.

17. A failed component identification system comprising: an air conditioner; the operation terminal according to claim 7; and a server configured to communicate with at least one of the air conditioner and the operation terminal over a network.

18. A failed component identification system comprising: an air conditioner; the operation terminal according to claim 8; and a server configured to communicate with at least one of the air conditioner and the operation terminal over a network.

19. A failed component identification system comprising: an air conditioner; the operation terminal according to claim 9; and a server configured to communicate with at least one of the air conditioner and the operation terminal over a network.

20. A failed component identification system comprising: an air conditioner; the operation terminal according to claim 10; and a server configured to communicate with at least one of the air conditioner and the operation terminal over a network.