JP5932483B2 - Air conditioner maintenance system and maintenance method - Google Patents

Description

  The present invention relates to an air conditioner maintenance system and a maintenance method thereof for acquiring or confirming the state of an air conditioner and further performing maintenance control for the air conditioner using an information terminal device.

  As a conventional air conditioner maintenance system, a remote control equipped with a service call button, an air conditioner centralized management device storing operation information of the air conditioner, the name of a user or administrator, contact information and model information, and an air conditioning centralized management device And a management center having a database of information on maintenance companies or service departments connected via the Internet. In the system, when the service call button is pressed when an equipment error occurs, the central air conditioning management device sends operation information, the name of the user or administrator, contact information, and model information to the management center. Is transmitted from the management center to the maintenance company or the service department (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 2002-115893 (pages 1 to 4, FIG. 1)

  However, the conventional maintenance system as described above has the following problems. That is, in the conventional air conditioner maintenance system, it is necessary to contact a support center or a management company when an abnormality occurs and take measures.

  In addition, detailed information on handling the occurrence of abnormalities has been investigated and confirmed by specialists such as service personnel.

  Therefore, the user does not know the detailed state of the air conditioner, and it is difficult for the user to know how to deal with an abnormality.

  The present invention has been made to solve the above-described problems, and a main object of the present invention is a system capable of improving the convenience when performing air conditioner status confirmation and / or maintenance control on the air conditioner. A method is provided.

  It is another object of the present invention to provide a more versatile air conditioner maintenance system and maintenance method.

The air conditioner maintenance system according to the present invention acquires an air conditioner that performs indoor air conditioning, and information for confirming the state of the air conditioner, and based on the acquired information, indicates the state of the air conditioner as a status confirmation QR code ( QR code is a registered trademark (this description is omitted in the following), and a remote controller that displays the QR code, and a status confirmation QR code displayed on the remote controller is read, and the read status confirmation QR code is analyzed to analyze the air conditioner comprising an information terminal apparatus status display of the said information terminal device, the maintenance items for the air conditioner is set in advance, the display at the command QR code for a control command for the remote controller corresponding to the item of the maintenance has a function of, the remote control reads the command for QR code displayed on the information terminal device, read command Analyzing the QR code, and has a function of executing a maintenance control corresponding to the control command to the air conditioner.
Furthermore, in the air conditioner maintenance method according to the present invention, predetermined information for confirming the state of the air conditioner is obtained by a remote controller for operating the operation of the air conditioner, and the obtained information is converted into a QR code for state confirmation. The status check QR code displayed on the remote control screen is read by the information terminal device, and the status check QR code displayed on the remote control screen is read and the read status check QR code is analyzed to indicate the status of the air conditioner. A control command for the remote controller corresponding to a predetermined maintenance item for the air conditioner is generated as a QR code by the information terminal device and displayed on the screen of the device. QR code for display, read the command QR code from the information terminal device by the remote control, and read the command Analyzing the R code to perform the maintenance control corresponding to the control command to the air conditioner.

  According to the present invention, the information terminal device, which is widely used general hardware, can acquire the state of the air conditioner and perform maintenance control within a predetermined range, so the user does not need the help of the support center. Both can perform a certain range of maintenance.

It is a block diagram of the air-conditioner maintenance system in Embodiment 1 of this invention. 3 is a configuration diagram of a local remote controller of the air conditioner according to Embodiment 1. FIG. 1 is a configuration diagram of an information terminal device according to Embodiment 1. FIG. It is a figure which shows collection of the status information of the air conditioner in Embodiment 1. FIG. It is the table | surface which provided the tag and classified the state of the air conditioner in Embodiment 1. FIG. 6 is a sample diagram of an information code before QR coding in Embodiment 1. FIG. 6 is a diagram illustrating a mode in which a QR code displayed on a local remote controller according to Embodiment 1 is read by an information terminal device. FIG. 6 is a diagram showing display contents by a dedicated application for a user on the information terminal device in Embodiment 1. FIG. 5 is a diagram illustrating display contents by a dedicated application for a service person on the information terminal device according to Embodiment 1. FIG. It is a figure which shows the outline | summary of the maintenance control instruction | indication with respect to the air conditioner in Embodiment 1. FIG. It is a figure which shows the flow of a process of the maintenance control instruction | indication with respect to the air conditioner in Embodiment 1. FIG. 3 is a flowchart for acquiring a state of an air conditioner in the first embodiment. 4 is a flowchart of QR code display on the local remote controller according to the first embodiment. 4 is a flowchart of QR code reading in the information terminal device in the first embodiment. 4 is a flowchart in a dedicated application for a user in the information terminal device in the first embodiment. 4 is a flowchart in a dedicated application for service personnel in the information terminal device according to the first embodiment. 6 is a flowchart of QR code display for air conditioner maintenance control in a dedicated application in the information terminal device according to the first embodiment. 5 is a flowchart for executing a maintenance control instruction for an air conditioner from the information terminal device according to the first embodiment.

Embodiment 1 FIG.
FIG. 1 is a diagram showing a configuration of an air conditioner maintenance system according to Embodiment 1 of the present invention. The air conditioner maintenance system 100 includes a local remote controller 110, an indoor unit 120, an outdoor unit 130, and an information terminal device 150, and includes information on a QR code 160. In addition, since an air conditioner is not limited to the indoor unit 120 and the outdoor unit 130 shown here, about other apparatuses, it shows as the air conditioner X140. Various air conditioners are collectively referred to as an air conditioner or an air conditioner.

  As shown in FIG. 2, the hand remote controller 110 includes a processing control device 200, a liquid crystal display device 210, an input device 220, a QR code control function 230, a liquid crystal display control function 240, an indoor unit command control function 250, and a QR code reading. A function 260 is provided. The local remote controller 110 is an operation panel that is normally used by a user (referring to a user of the air conditioner) to operate the air conditioner. Reference numeral 110b shown in FIG. 4 and the like is an operation button.

  The indoor unit 120 is an indoor air conditioner and can perform operation monitoring using the local remote controller 110.

  The outdoor unit 130 is connected to the indoor unit 120 and can perform intake and exhaust of outside air outdoors.

  The air conditioner X140 refers to an air conditioner other than the indoor unit 120 and the outdoor unit 130. For example, a ventilator is raised. The operation of the air conditioner X140 is also operated by the local remote controller 110.

  As shown in FIG. 3, the information terminal device 150 includes a processing control device 300 that controls a terminal command, a liquid crystal display device 310 that allows a user to check information, an input device 320 that captures information from the outside, an application 330 that is software, In addition, a QR code reading function 370 for capturing a QR code using a camera or a two-dimensional bar code reader is provided. As the information terminal device 150, for example, a smartphone or a mobile phone that is a mobile terminal with a telephone camera can be used.

  The QR code 160 is displayed on the local remote controller 110 and can be read by the information terminal device 150. Conversely, the QR code 160 displayed on the information terminal device 150 can be read by the local remote controller 110.

  The processing control device 200 is a device that controls the entire processing of the local remote controller 110.

  The liquid crystal display device 210 is a device that displays characters and illustrations on the local remote controller 110.

  The input device 220 is a device having a function of reading a QR code. In addition, it is good also as a form provided with the terminal which connects the external apparatus which reads QR Code, without equipping a reading apparatus.

  The QR code control function 230 has a function of creating a QR code and analyzing (including restoring) the QR code.

  The liquid crystal display control function 240 has a function of creating various information to be output to the liquid crystal display device 210 and displaying the contents operated by the local remote controller 110.

  The indoor unit command control function 250 has a function of controlling data communication with the connected indoor unit 120 or another air conditioner and analyzing data communication contents.

  The QR code reading function 260 has a function of reading a QR code using a camera or a QR code reader and analyzing the code information.

  The processing control device 300 is a device that controls the entire processing of the information terminal device 150.

  The liquid crystal display device 310 is a device that displays characters and illustrations on the information terminal device.

  The input device 320 is a device having a function of reading a QR code. In addition, it is good also as a form provided with the terminal which connects the external apparatus which reads QR Code, without providing a reader.

  The application 330 includes a QR code control function 340 that analyzes and generates a QR code, a liquid crystal display control function 350 that controls information output to the liquid crystal display device 310, and an air conditioner state analysis function 360 that analyzes state information of the air conditioner. Is provided. The application 330 may be general-purpose software provided in advance in the portable information terminal in addition to software prepared exclusively for the air conditioner maintenance system.

  The QR code control function 340 has a function of creating a QR code and analyzing (including restoring) QR code information.

  The liquid crystal display control function 350 has a function of creating various information to be output to the liquid crystal display device 310 and displaying the contents operated by the information terminal device 150.

  The air conditioner state analysis function 360 has a function of processing air conditioner information based on information obtained by the QR code control function 340.

  The QR code reading function 370 has a function of reading a QR code using a camera or a QR code reader and analyzing the code information.

  Next, the operation of the air conditioner maintenance system 100 will be described. First, an example of the flow of air conditioner status (status information) acquisition processing will be shown based on FIG.

  A state acquisition command is transmitted from the local remote controller 110 to the indoor unit 120 (arrow 1). The indoor unit 120 collects its own state and transmits a state acquisition command to the outdoor unit 130 as necessary (arrow 2). The outdoor unit 130 collects its own state and transmits the state to the indoor unit 120 (arrow 3). The indoor unit 120 combines the information obtained from the outdoor unit 130 and its own information, and transmits the state to the local remote controller 110 (arrow 4).

  The timing of the status acquisition command from the hand remote controller 110 may be triggered by a manual operation by the user using the hand remote controller 110, or may be automatically acquired at regular time intervals. Further, in the case of an air conditioner that does not have an outdoor unit 130, the arrows through which signals flow are only (1) and (4).

  Examples of air conditioner status information to be acquired include air conditioner model name, serial number, address, DIP switch (setting DipSW) status, power supply frequency, operating time, heat exchanger capacity, compressor operation accumulated time, abnormality history Such as operation history, installation date, etc. Since these pieces of information are different for each unit (outdoor unit, indoor unit, ventilator, etc.) to be acquired, items obtained according to the acquisition destination are changed. Therefore, the information to be acquired may be determined in advance depending on the unit, or the indoor unit 120 may determine the acquisition item from the model name of the air conditioner.

  Next, in order to display the state of the air conditioner as a QR code on the local remote controller 110, it will be described that a tag is provided and classified. FIG. 5 shows an example of the tag.

  In order to generate a QR code, the acquired information is handled as character string data. In order to identify which state code is included in a series of character string data, a tag as shown in FIG. 5 is used.

  The tag may be distinguished by a unique character string surrounded by “<” and “>”, or an identifier by another character. FIG. 6 is a sample information code including a tag.

  It should be noted that it is possible to distinguish whether each item displayed on the information terminal device 150 is for a user or a serviceman.

  By doing so, it is possible to switch the information displayed by the application 330 that reads the QR code.

  Next, a masking process performed before QR code generation will be described. At present, QR codes are generally widespread, and reader devices and applications for reading them are readily available on a daily basis. However, information that the user wants to hide is also included in the state of the air conditioner. For example, this is information for service personnel. Therefore, here, a masking process (character string encryption) is performed on the character string code generated in order to conceal information to the user.

  As a means of masking processing, a fixed mask bit (eg: 10111110) may be bit-calculated on the original data, or a formula based on date is provided to improve security so that it changes every day. May be. The means for the masking process is not limited to this.

  The portion to be masked may be applied to the entire character string or may be applied only to the information portion for the service person. In this case, a specific code is added to the masking start point and end point so that it can be determined at the time of analysis. If all the information can be disclosed to the user, it is not necessary to perform a masking process.

  FIG. 7 is a diagram illustrating a mode in which the information terminal device 150 reads the QR code displayed on the local remote controller 110.

  In FIG. 7, an information terminal device with a camera and a notebook PC to which a QR code reader is connected are shown as the information terminal device 150, but other devices may be used as long as they can read the QR code.

  The information terminal device 150 reads the QR code 160 of the local remote controller 110. FIG. 8 shows an example in which a dedicated application 330 is used for the information terminal device 150 at this time. FIG. 8 shows an example displayed using a dedicated application for the user.

  In the dedicated application 330, the QR code information is analyzed by the QR code control function 340, or is analyzed and restored to the information before conversion. Next, the air conditioner state analysis function 360 separates the character string data into each state, and the liquid crystal display control function 350 creates contents to be output to the liquid crystal display device 310 and displays them on the liquid crystal display device 310. .

  Further, the dedicated application 330 can cause the liquid crystal display device 310 to output details of error information and a countermeasure method based on the state of the air conditioner.

  Furthermore, the dedicated application 330 can display maintenance information for the air conditioner (such as the date on which the filter for the indoor unit 120 is scheduled to be replaced).

  On the other hand, FIG. 9 shows an example displayed on the information terminal device 150 using a dedicated serviceman application.

  The internal processing in this case is the same as that of a dedicated application for the user, but is different in that it has a function of causing the liquid crystal display device 310 to output maintenance items performed by a service person based on error information of the air conditioner. .

By using the dedicated application 330, both the user and the service person can check the state of the air conditioner and know what action should be taken when an error occurs.
When the general-purpose application 330 is used, the state information of the air conditioner is generally displayed as a simple character string.

  Next, an example of maintenance control for performing a procedure on the air conditioner using the air conditioner maintenance system 100 will be described. FIG. 10 shows an outline when this maintenance control is performed. The dedicated application 330 is preliminarily set with maintenance items for the air conditioner, and has a function of selecting the item.

  When a maintenance item to be executed is selected in the dedicated application 330, a QR code for maintenance control command is displayed on the liquid crystal display device 310. When generating the QR code, processing is performed using the QR code control function 340 and the air conditioner state analysis function 360.

Maintenance control items performed on the air conditioner include command transmission, capability save value change, self-diagnosis monitor, memory content acquisition, compressor operation integration time reset, and file output. What other maintenance items are available depends on the type and model name of the air conditioner, but items that can be handled by software can be targeted.
Moreover, the function of updating and transmitting information obtained from the air conditioner may be used. For example, the filter replacement date is updated or a note is added.

  Next, the QR code displayed on the liquid crystal display device 310 of the information terminal device 150 is read by the QR code reading function 260 provided in the local remote controller 110.

As a means used in the QR code reading function 260, a commercially available two-dimensional bar code reader may be used. In this case, a connection terminal (such as a USB port) with an external device is provided.
Further, the local remote controller 110 may include a QR code reader as an input device for the indoor unit 120.

  FIG. 11 shows the flow of maintenance control instruction processing from the information terminal device to the air conditioner.

  A maintenance control instruction from the information terminal device 150 is given to the local remote controller 110 using the QR code described above (1). Receiving the instruction, the local remote controller 110 transmits a command to the indoor unit 120 by the indoor unit command control function 250 (2). The indoor unit 120 transmits this information to the outdoor unit 130, and the outdoor unit 130 executes the content of the maintenance control instruction (3). Depending on the content of the maintenance control instruction, it may be performed by the indoor unit 120 instead of the outdoor unit 130. In this case, command transmission (3) from the indoor unit 120 to the outdoor unit 130 is not necessary.

  Next, the outdoor unit 130 that has executed the content of the maintenance control instruction returns a response result to the indoor unit 120 (4). The indoor unit 120 that has received the response transmits the response to the local remote controller 110 (5). Then, the local remote controller 110 outputs the response result as a QR code to the liquid crystal display device 210 using the indoor unit command control function 250, the liquid crystal display control function 240, and the QR code control function 230 (6).

  Further, the QR code information displayed on the liquid crystal display device 210 is read by the dedicated application 330 of the information terminal device 150 and the result is displayed on the liquid crystal display device 310 of the information terminal device 150. This QR code reading is the same as the processing described above.

Next, details of each operation described so far of the air conditioner maintenance system 100 will be described with reference to FIGS.
First, the operation | movement which acquires state information from an air conditioner is demonstrated. FIG. 12 is a flowchart for acquiring the state of the air conditioner in the air conditioner maintenance system 100.

(S101)
An operation for acquiring the state of the air conditioner (in this case, the indoor unit 120 and the outdoor unit 130) is performed by the local remote controller 110. This operation may be a manual operation or automatic acquisition by a fixed interval timer.

(S102)
A status acquisition command is transmitted from the hand remote controller 110 to the indoor unit 120.

(S103)
The indoor unit 120 analyzes the received command.

(S104, S105)
If the instructed content is that of the outdoor unit 130 during command analysis, the indoor unit 120 transmits a command to the outdoor unit 130 (YES in S104). If the instructed content is only for itself, it is not necessary to send a command to the outdoor unit 130 (to NO in S104).

(S106)
The outdoor unit 130 analyzes the received command.

(S107)
The outdoor unit 130 collects its operating state based on the command content.

(S108)
The outdoor unit 130 transmits the collected operation information to the indoor unit 120.

(S109)
The indoor unit 120 collects its operating state based on the command content.

(S110)
The indoor unit 120 combines the operation information obtained from the outdoor unit 130 and its own operation information, and transmits the operation information to the local remote controller 110.

(S111)
The local remote controller 110 displays the status of the air conditioner as a QR code 160 on the liquid crystal display device 210 based on the operation information received from the indoor unit 120.

  Next, the operation of QR code display on the local remote controller 110 will be described. FIG. 13 is a flowchart of QR code display on the local remote controller 110. The local remote controller 110 operates according to a command from the processing control apparatus 200.

(S201)
When the local remote controller 110 receives status information from the indoor unit 120 by the indoor unit command control function 250, the local remote controller 110 analyzes the information.

(S202)
The analyzed air conditioner status information is converted into a character string as an information code.

(S203)
The processing control device 200 determines whether or not to mask the character string information. As a material for determining whether or not to implement, one condition may be whether or not the above-mentioned information dedicated to service personnel is included. If masking is unnecessary, the process proceeds to S206.

(S204)
When performing the masking process, since it is necessary to determine the masking part, it is determined which part is to be processed. As for the masking portion, the information tag for the service person described above is generally the corresponding portion, but is not limited thereto.

(S205)
After the masking location is determined, masking is performed by performing a mask bit operation. The masking method may be other methods.

(S206)
Subsequently, the QR code 160 is generated from the information code character string by the QR code control function 230.

(S207)
Then, the generated QR code 160 is output to the liquid crystal display device 210 using the liquid crystal display control function 240.

  Next, an operation of reading the QR code 160 displayed on the local remote controller 110 using the information terminal device 150 will be described. FIG. 14 is a flowchart of QR code reading by the information terminal device 150.

(S301, S302)
The QR code 160 is read by the QR code reading function 370, but the processing is divided by the reading means.

(S303)
When the built-in camera provided in the information terminal device is used as reading means, the QR code 160 is photographed by the camera.

(S304)
On the other hand, when an external QR code reader is used as reading means, the QR code is scanned by, for example, a two-dimensional barcode reader.

(S305)
The read QR code 160 is recognized as a character string code.

(S306)
If the character string code is masked, it is determined whether or not the unmasking process needs to be performed. If the unmasking process is unnecessary, the process ends.

(S307)
When performing unmasking processing, the unmasking location which performs it is determined. The determination is made based on the presence or absence of a specific code. If a specific code exists, an unmasking process is performed for the section from the start code to the end code.

(S308)
The unmasking process restores the original information by performing an inverse mask bit operation that reversely applies a mask bit operation adapted at the time of masking.

  Next, the operation of displaying the status of the air conditioner by the information terminal device 150 will be described. FIG. 15 is a flowchart of the dedicated application 330 for the user in the information terminal device 150.

(S401, S402)
The air conditioner state analysis function 360 checks whether the tag type of the information code is for the user. If it is a tag for a user, it is adopted as a display target. In the case of a tag for a service person, it is unnecessary information in this application, so it is discarded, and S402 is skipped and the process proceeds to S403.

(S403)
The determination processing in S401 and S402 is repeated until the information code reaches the end.

(S404)
After the analysis of the information code is completed, the content to be displayed on the liquid crystal display device 310 is created. The information created here is, for example, as shown in FIG. 8 and includes various states of the air conditioner, detailed information on errors and countermeasures, and maintenance information for the user.

(S405)
When the content to be output to the liquid crystal display device 310 is determined, the liquid crystal display control function 350 performs GUI display on the liquid crystal display device 310.

  FIG. 16 is a flowchart in the dedicated application 330 for the service person in the information terminal device 150.

(S501)
First, an object (item) to be displayed on the information terminal device 150 is determined. In principle, in the case of the service application 330, the contents of the information code are all displayed.

(S502)
The processing of S501 is repeated until the information code reaches the end.

(S503)
After the analysis of the information code is completed, the content to be displayed on the liquid crystal display device 310 is created. The information created here is, for example, as shown in FIG. 9 and includes various information on the air conditioner for service personnel, as well as detailed error information and a maintenance method.

(S504)
When the content to be output to the liquid crystal display device 310 is determined, the liquid crystal display control function 350 performs GUI display on the liquid crystal display device 310.

  Next, the operation of creating and displaying the maintenance control code of the air conditioner by the dedicated application 330 provided in the information terminal device 150 will be described. FIG. 17 is a flowchart of QR code display for controlling the maintenance of the air conditioner by the dedicated application 330 in the information terminal device 150.

(S601)
The user designates maintenance items to be performed on the liquid crystal display device 310 of the information terminal device 150.

(S602)
A dedicated application 330 creates a character string information code using a dedicated tag corresponding to a maintenance item designated in advance.

(S603)
Masking processing is performed on the created character string information code by, for example, mask bit calculation. The masking process is performed here so that the content cannot be read by a general QR code reader.

(S604, S605)
Based on the character string code subjected to the masking process, a QR code is created using the QR code control function 340, and then the QR code is displayed on the liquid crystal display device 310 of the information terminal device 150.

  Next, an operation for performing a maintenance control instruction from the information terminal device 150 to the air conditioner will be described. FIG. 18 is a flowchart for instructing maintenance control of the air conditioner from the information terminal device 150.

(S701)
The QR code displayed on the information terminal device 150 is read using the local remote controller 110. As hardware means corresponding to the QR code reading function 260, a commercially available two-dimensional bar code reader can be used. In this case, a connection terminal (such as a USB port) with an external device is provided. Further, the local remote controller 110 may include a QR code reader.

(S702)
The local remote controller 110 uses the QR code control function 230 to analyze the read QR code and convert it to a character string code.

(S703)
Since the converted character string code is subjected to masking processing, the original information is restored by reversing the mask bit operation (specific bit operation) adapted at the time of masking.

(S704, S705)
The indoor unit command control function 250 creates a transmission command to the indoor unit 120 from the restored maintenance control instruction information and transmits it.

(S706)
The indoor unit 120 transmits the received maintenance control instruction command to the outdoor unit 130. If the instructed maintenance command is for the indoor unit, it is not necessary to perform maintenance control only on the indoor unit 120 and transmit the command to the outdoor unit 130.

(S707, S708)
The outdoor unit 130 that has received the maintenance control instruction command performs maintenance control, and notifies the indoor unit 120 of the result.

(S709)
Next, the indoor unit 120 that has received the response transmits a response indicating that the maintenance control has been performed to the local remote controller 110.

(S710, S711)
The hand remote controller 110 outputs the response result as a QR code to the liquid crystal display device 210 of the hand remote controller 110 using the indoor unit command control function 250 and the QR code control function 230.
As a result, the user can read the QR code as in the case of status acquisition.

  In each of the flowcharts described above, the indoor unit 120 and the outdoor unit 130 are described as the air conditioners, but they can be similarly applied to other air conditioners such as a ventilator. Further, the present invention can also be applied when there is no device corresponding to the outdoor unit 130.

  DESCRIPTION OF SYMBOLS 100 Air conditioner maintenance system, 110 Hand remote control, 110b Operation part of hand remote control, 120 Indoor unit, 130 Outdoor unit, 140 Air conditioner X, 150 Information terminal device, 160 QR code, 200 Processing control device, 210 Liquid crystal display device, 220 Input device, 230 QR code control function, 240 Liquid crystal display control function, 250 Indoor unit command control function, 260 QR code reading function, 300 Processing control device, 310 Liquid crystal display device, 320 Input device, 330 Dedicated or general purpose application, 340 QR code control function, 350 Liquid crystal display control function, 360 Air conditioner state analysis function, 370 QR code reading function.

Claims (8)

An air conditioner for indoor air conditioning;
A remote controller that acquires information for confirming the state of the air conditioner, converts the state of the air conditioner into a state confirmation QR code (registered trademark, hereinafter omitted) based on the acquired information, and
An information terminal device that reads the QR code for state confirmation displayed on the remote control, analyzes the read QR code for state confirmation, and displays the state of the air conditioner;
Equipped with a,
The information terminal device has a function for displaying a control command for the remote controller corresponding to the maintenance item in a command QR code, in which maintenance items for the air conditioning device are preset.
When the remote control reads the command QR code displayed on the information terminal device, the remote control analyzes the read command QR code and performs maintenance control corresponding to the control command on the air conditioner. air-conditioning system maintenance system with. 2. The air conditioner maintenance system according to claim 1, wherein the remote controller includes character string encryption means that treats the information acquired from the air conditioner as character string data and encrypts the character string data. The air conditioning apparatus maintenance system according to claim 1 or 2 , further comprising a display distinction function for determining whether to display the status confirmation QR code for a user or a service person. Acquisition of the information which confirms the state of the said air conditioner is an air conditioner maintenance system as described in any one of Claims 1-3 automatically performed regularly by a timer. The air conditioner maintenance system according to any one of claims 1 to 4 , wherein the information terminal device includes a terminal for connecting an external device that reads the state confirmation QR code. The air conditioner maintenance according to any one of claims 1 to 5 , wherein the information terminal device includes character string encryption means for encrypting character string data of the control command before making the command QR code. system. The air conditioner maintenance system according to any one of claims 1 to 6 , wherein the remote controller includes a terminal for connecting an external device that reads the command QR code. By acquiring a predetermined information for confirming the state of the air conditioner by a remote controller for operating the operation of the air conditioner, converting the acquired information into a QR code for state confirmation and displaying it on the screen of the remote controller,
The information terminal device reads the state confirmation QR code displayed on the screen of the remote controller, analyzes the read state confirmation QR code, and displays the state of the air conditioner on the screen of the information terminal device ,
The information terminal device creates a control command for the remote control corresponding to a predetermined maintenance item for the air conditioner as a QR code, and displays it as a command QR code on the screen of the information terminal device,
A maintenance method for an air conditioner that reads the command QR code from the information terminal device by the remote controller, analyzes the read command QR code, and performs maintenance control corresponding to the control command on the air conditioner .