JP2004060943A - Failure diagnosis system and diagnosis server - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a failure diagnosis system and a diagnosis server capable of accurately diagnosing the causes of a failure in airconditioning facilities. <P>SOLUTION: The failure diagnosis system has a station 2 and a management server 4. The station 2 can transmit equipment information on airconditioning facilities 3. The management server 4 specifies the confirmation items of a failure diagnosis in the airconditioning facilities 3 according to history information based on equipment information. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a failure diagnosis system and a diagnosis server, and more particularly to a failure diagnosis system and a diagnosis server for diagnosing a failure of an air conditioner including a plurality of air conditioners.
[0002]
[Prior art]
2. Description of the Related Art There has been provided a system for performing a failure diagnosis on a plurality of air conditioners installed in a building or the like. In this system, a plurality of air conditioners and a diagnostic server are connected via a communication network, and a fault diagnosis is remotely performed in the diagnostic server based on a detection result of a sensor or the like provided in the air conditioner. By communicating the detection results of the sensors and the like from the diagnostic server to the service engineer, the service engineer specifies the cause of the failure based on an air conditioner diagnosis manual and performs repair.
[0003]
[Problems to be solved by the invention]
When repairing an air conditioner, a service engineer performs a failure diagnosis according to an air conditioner diagnosis manual that is created uniformly. However, if the failure diagnosis is performed according to only the manual, for example, the newly installed air conditioner and the air conditioner installed 10 years or more ago will perform the failure diagnosis in the same procedure. In addition, failure diagnosis according to the manual is also performed for an air conditioner in which a failure is likely to occur at a specific location under conditions specific to the model / property.
[0004]
For this reason, failure diagnosis based solely on the air conditioner diagnosis manual may cause errors in the determination of the failure location and the diagnosis of the cause of the failure, which may require extra time or needless replacement of parts during repair. is there.
A veteran service engineer can perform a failure diagnosis based on experience without following a manual, but a less experienced service engineer often performs a failure diagnosis according to a manual. Therefore, there is a need for a system that can bridge this difference in experience.
[0005]
It is an object of the present invention to provide a failure diagnosis system capable of more accurately performing a failure diagnosis of an air conditioner. Another object of the present invention is to provide a diagnostic server capable of more accurately performing a fault diagnosis of an air conditioner.
[0006]
[Means for Solving the Problems]
A failure diagnosis system according to claim 1 is a failure diagnosis system for diagnosing a failure of a plurality of air conditioners, and includes an information sending unit and a diagnosis server. The information sending means can send equipment information of the air conditioning equipment. The diagnosis server designates a check item for failure diagnosis of the air conditioner based on the device information and history information based on past repair information of the air conditioner.
The air conditioner includes an air conditioner and information transmitting means connected to the air conditioner. The information transmitting means is connected to one or more air conditioners or is built in the air conditioner, and transmits information including device information of the air conditioner. The device information includes, for example, during operation / stop, ON / OFF of each actuator, a set temperature, a temperature sensor detection result, and the like.
[0007]
The diagnosis server performs a failure diagnosis based on the device information and the report information when the failure of the air conditioning equipment is predicted or confirmed to be the failure based on the device information or the report information from the user of the air conditioner. Specify the confirmation items for. The diagnostic server includes device information of an air conditioner (particularly an air conditioner) to be subjected to failure diagnosis, and device information of an air conditioner installed in the same environment as the air conditioner (for example, installed in the same building). , And the history information is obtained based on the device information of the same model as the air conditioner. Further, the diagnosis server obtains history information based on repair information of the air conditioner targeted for failure diagnosis and repair information of the same model as the air conditioner. Based on this history information, the diagnostic server specifies a confirmation item. The history information is information including a past operation history (determined from the device information) and a repair history (determined from the repair information) of the air conditioner to be subjected to the failure diagnosis.
[0008]
Here, since the check item of the failure diagnosis is specified based on the history information, it is possible to specify the check item different from the case where the history information is not considered. Thereby, it is possible to perform more appropriate failure diagnosis based on the past history of the air conditioning equipment to be subjected to the failure diagnosis and the related air conditioning equipment.
A failure diagnosis system according to a second aspect is the failure diagnosis system according to the first aspect, wherein the diagnosis server can add a confirmation item or change an order according to the history information.
[0009]
Here, when the diagnostic server specifies a check item according to the history information, the check item can be added or the order of the check items can be changed. This allows efficient and quick failure diagnosis.
For example, when it is determined that there is a high possibility that a failure has occurred in a specific location of the air conditioner, if a check item for diagnosing the specific location is added, failure diagnosis can be performed efficiently and quickly. Similarly, for example, when it is determined that there is a high possibility that a failure has occurred in a specific location of the air conditioning equipment, if the order of the check items for diagnosing the specific location in detail is changed, the rough diagnosis is changed to a detailed diagnosis. Since the detailed diagnosis can be performed first by changing the flow of the general failure diagnosis, it is possible to efficiently and quickly perform the failure diagnosis.
[0010]
A failure diagnosis system according to a third aspect is the failure diagnosis system according to the first or second aspect, wherein the first device information, which is at least a part of the device information, is detected by a detection unit provided in the air conditioner. .
First device information, which is at least a part of the device information of the air conditioner to be subjected to the failure diagnosis, is detected by the detection unit of the air conditioner and transmitted by the information sending unit.
Here, since the first device information can be automatically detected by the detection unit of the air conditioner, the check item can be automatically changed in the diagnostic server based on the history information based on the device information. This makes it possible to perform more appropriate failure diagnosis.
[0011]
A failure diagnosis system according to a fourth aspect is the failure diagnosis system according to the third aspect, wherein the first device information includes an operation time of the air conditioner.
If the operating time of the air conditioning equipment is prolonged, deterioration of parts inside the equipment will occur along with the operation time. Is preferred.
Here, since the operation time is included in the device information, the confirmation item can be changed based on the operation time. This makes it possible to perform more appropriate failure diagnosis.
[0012]
A failure diagnosis system according to a fifth aspect is the failure diagnosis system according to any one of the first to fourth aspects, further comprising an input device that inputs second device information that is at least a part of the device information.
If there is device information that is difficult or cannot be automatically detected in the air conditioning equipment, a service engineer etc. can measure the device information and input the device information of the measurement result, and the confirmation item change means confirms Items can be changed.
[0013]
Here, since the input device capable of inputting the second device information is provided, for example, it is possible to input device information that cannot be detected by the air conditioner, and the diagnostic server can change the confirmation item based on the history information based on the device information. It is possible to do. This makes it possible to perform more appropriate failure diagnosis.
Note that the second device information may partially overlap the first device information.
A failure diagnosis system according to claim 6 is the failure diagnosis system according to any one of claims 1 to 5, further including a portable confirmation terminal. The confirmation terminal can receive the confirmation item specified by the diagnostic server from the diagnostic server.
[0014]
Here, the confirmation item can be confirmed by the confirmation terminal. The confirmation terminal can receive the confirmation items from the diagnostic server and is portable, so that the confirmation items can be referred to at the site where the air conditioner is repaired. This makes it possible to perform more appropriate failure diagnosis.
The failure diagnosis system according to claim 7 is the failure diagnosis system according to claim 6, wherein the confirmation terminal can input third device information that is at least a part of the device information.
[0015]
Here, since the third device information can be input to the confirmation terminal, for example, the third device information is transmitted to the diagnosis server from the site where the air conditioning equipment is repaired, and the confirmation item changing unit converts the device information including the third device information into the device information. The confirmation item can be further changed based on the history information based on the result, and the result can be received by the confirmation terminal. This makes it possible to add more detailed device information at the site where the air conditioning equipment is repaired, and to make the check items for failure diagnosis more appropriate.
Note that the third device information may partially overlap the first device information and the second device information.
[0016]
The diagnostic server according to claim 8 is a diagnostic server that diagnoses a failure of a plurality of air conditioners, and includes a communication unit, a confirmation item specifying unit, an information confirmation unit, and a confirmation item change unit. The communication unit receives the equipment information of the air conditioning equipment. The confirmation item designation means designates a confirmation item. The information checking means checks the history information based on the device information and the past repair information of the air conditioner. The confirmation item changing means adds confirmation items and changes the order according to the history information confirmed by the information confirmation means.
The confirmation item designating means is configured to perform the operation when the failure of the air conditioning equipment is predicted or confirmed to have occurred by the information received in the communication unit such as the equipment information and the report information from the user of the air conditioner. The confirmation item of the failure diagnosis is specified based on the information and the report information. The information checking means obtains history information based on the device information and the past repair information of the air conditioner. The confirmation item change unit adds the confirmation items specified by the confirmation item designation unit and changes the order according to the history information. The history information is information including a past operation history (determined from the device information) and a repair history (determined from the repair information) of the air conditioner to be subjected to the failure diagnosis. In addition, the equipment information and repair information are the same as those of the air conditioner subject to failure diagnosis, the air conditioner installed in the same environment (such as installed in the same building) as the air conditioner, and the same air conditioner as the air conditioner. Includes information on model air conditioning equipment.
[0017]
Here, the confirmation item of the failure diagnosis designated by the confirmation item designation means can be changed by the confirmation item change means. This makes it possible to perform a more appropriate failure diagnosis based on the past history of the air conditioner to be subjected to the failure diagnosis.
A diagnostic server according to a ninth aspect is the diagnostic server according to the eighth aspect, wherein the communication unit can receive an input of second device information that is at least a part of the device information.
If there is device information that is difficult or cannot be automatically detected in the air conditioning equipment, a service engineer etc. can measure the device information and input the device information of the measurement result, and the confirmation item change means confirms Items can be changed.
[0018]
Here, since the communication unit can receive the second device information, for example, the communication unit receives the second device information, which is the device information that is difficult to automatically detect by the air conditioner, and the confirmation item changing unit uses the second item information. The confirmation item can be changed based on the history information based on the device information including the device information. This makes it possible to perform more appropriate failure diagnosis.
A diagnostic server according to a tenth aspect is the diagnostic server according to the eighth or ninth aspect, further comprising an output unit that outputs a confirmation item.
[0019]
Here, the confirmation item specified by the diagnostic server can be output by the output unit. The output unit is connected to a printing unit such as a printer, for example, and can print the confirmation items, or can transmit the confirmation items possessed by a service engineer or the like to a confirmation terminal that can display the confirmation items. This makes it easy for a service engineer or the like to check the check items for the failure diagnosis of the air conditioning equipment.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 shows a failure diagnosis system for an air conditioner according to the present invention. The failure diagnosis system performs a failure diagnosis of the air conditioning equipment based on equipment information and repair information of the air conditioning equipment. The failure diagnosis system is installed in a plurality of air conditioners 1 installed in a building 91, a station 2 to which the plurality of air conditioners 1 are connected, an air conditioner 3 including the air conditioner 1 and the station 2, and a management center 92. Server 4, which manages a plurality of air conditioners, mobile terminal 5, which is possessed by a service engineer who checks and repairs failure of air conditioner 1, and communication network which connects station 2 with management server 4 and mobile terminal 5. 9.
[0021]
<Overall configuration>
[Air conditioning equipment]
The air conditioner 1 performs air conditioning in the room of the building 91.
The station 2 is connected to a plurality of air conditioners 1 installed in a building 91 and monitors and controls the air conditioners 1. The station 2 is connected to the management server 4 of the management center 92 via the communication network 9. The station 2 can transmit device information such as a detection result of a sensor provided in the air conditioner 1 and a current operation state of the air conditioner 1 to the management server 4. The communication network 9 is a dedicated line, a public line, the Internet, or the like.
[0022]
[Management server]
The management server 4 monitors the plurality of air conditioners 1 and designates a confirmation item of a cause of failure of the air conditioners 1. The management server 4 includes a communication unit 11 connected to the communication network 9, a processing unit 12 that monitors a plurality of air conditioners 1 and specifies a check item of a failure cause, and a history information based on device information of the air conditioner 1. It has a storage unit 13 for storing.
The communication unit 11 receives the device information on the air conditioner 1 from the air conditioner 1 and the mobile terminal 5 and transmits a failure cause confirmation item specified by the processing unit 12 to the mobile terminal 5.
[0023]
The processing unit 12 manages the air conditioner 1 based on the device information on the air conditioner 1 received by the communication unit 11, and stores the history information based on the device information in the storage unit 13. The processing unit 12 includes a confirmation item designation unit 21, an information confirmation unit 22, and a confirmation item change unit 23 as a unit for designating a confirmation item of a failure cause of the air conditioner 1.
The confirmation item specifying means 21 determines whether or not the air conditioner 1 is out of order based on the device information received from the air conditioner 1 and the device information and report information input by the service engineer in the mobile terminal 5. . When it is determined that the air conditioner 1 has a problem but is faulty, the check item specifying means 21 determines a check item for performing a fault diagnosis of the air conditioner 1 based on the device information and the report information. Specify the content and order.
[0024]
The information confirmation unit 22 obtains history information based on the device information received from the air conditioner 1 up to now, the device information input by the service engineer in the portable terminal 5 and the like, the past repair information of the air conditioner 3, and the like. Then, the history information is stored in the storage unit 13. The history information is a device history of the air-conditioning apparatus 1, and is based on device information such as a degree of aging deterioration, an operation time based on operation / stop during the operation included in the device information, and the number of ON / OFF times of the actuator and the relay. There are history information and history information based on repair information such as maintenance information up to now. In addition, the history information includes the device history of the air conditioner 1 placed in the same environment (the same building or the like) as the air conditioner 1, the device history of the air conditioner 1 of the same model, and the like.
[0025]
The confirmation item changing unit 23 is configured to further confirm items based on the confirmation items designated by the confirmation item designation unit 21 so that more appropriate failure confirmation can be performed based on the history information stored in the storage unit 13. Add or change the order of confirmation items.
[Mobile terminal]
The mobile terminal 5 can display the confirmation items received from the management server 4 via the communication network 9, and can receive input of device information regarding the air-conditioning apparatus 1 and transmit the information to the management server 4. For example, the service engineer accepts an input as device information and transmits the measurement result when the failure check of the air conditioner 1 is performed to the management server 4, or checks the air conditioner 1 according to the specified check items. As a result, when a repair is performed, an input of a repair history is received and transmitted to the management server 4.
[0026]
The device information input to the mobile terminal 5 includes the degree of efficiency deterioration of the compressor, the degree of change in motor-operated valve characteristics, the heat transfer / pressure loss characteristics of the heat exchanger, the physical properties of refrigerant / oil, the degree of filter clogging, and the like. Can be
<Operation>
[Failure judgment]
The air conditioner 1 transmits device information to the communication unit 11 of the management server 4 via the station 2. The device information input to the mobile terminal 5 by a service engineer or the like is further transmitted to the communication unit 11 of the management server 4 in the same manner. The device information is sent from the communication unit 11 to the processing unit 12. The confirmation item specifying means 21 determines whether or not the air conditioner 1 is out of order based on the device information. Further, the information confirmation unit 22 obtains history information based on the device information and stores the history information in the storage unit 13.
[0027]
When it is determined that the air conditioner 1 is out of order, the check item specifying means 21 specifies the contents and order of the check items in order to identify the location and the cause of the failure of the air conditioner 1.
For example, when it is determined that the failure is due to lack of gas or clogging of the refrigerant system, the contents and order of confirmation items (steps) are designated as described in FIG. That is, it is determined in step S1 whether or not the detection result of a predetermined sensor that detects a lack of gas or a blockage of the refrigerant system is within a specified value. Conclude that this is the cause of the failure. If the detection result of the predetermined sensor is within the specified value, the process proceeds to step S2. In step S2, it is determined whether or not the resistance value of the predetermined sensor is within a specified value. If the resistance value is within the specified value, it is concluded that the malfunction of the printed circuit board is the cause of the failure. On the other hand, if the resistance value is not within the specified value, it is concluded that the malfunction of the sensor is the cause of the failure.
[0028]
[Change of confirmation items according to history information]
The confirmation item changing unit 23 changes the contents and order of the confirmation items specified by the confirmation item specifying unit 21 based on the history information stored in the storage unit 13.
For example, in the air conditioner 1 delivered to the same building 91 as the air conditioner 1 determined to have failed or in the air conditioner 1 shipped at the same time, a sensor that detects a lack of gas or a blockage of the refrigerant system. If there is repair information indicating that the air conditioner is likely to break down, the order of the check items (steps) of the target air conditioner 1 is changed from FIG. 2 (a) to FIG. 2 (b). By changing the order of the check items, malfunction of the sensor can be checked at an early stage, and more appropriate repair can be performed.
[0029]
Further, for example, when the air conditioner 1 to be subjected to the failure diagnosis is known from the history information that the degree of contamination becomes surely equal to or more than a predetermined value when the operation time is equal to or longer than a predetermined time, the confirmation item changing unit 23 sets the operation time to Is added as shown in FIG. 2 (a) to FIG. 2 (c). This makes it possible to quickly confirm that the cause is contamination of the heat exchanger, so that the cause of the failure can be pinpointed efficiently and quick repair can be performed. However, if the heat exchanger is recently cleaned as a maintenance, the heat exchanger is rarely soiled, so the confirmation item changing means 23 changes the confirmation items from FIG. 2C to FIG. ) To omit step S3. Thus, the failure diagnosis is performed if the cause is contamination of the heat exchanger, and the time required for the failure diagnosis is reduced.
[0030]
[Output of confirmation items]
The confirmation item designated by the confirmation item designation unit 21 and the confirmation item change unit 23 is transmitted from the communication unit 11 to the portable terminal 5 via the communication network 9. The mobile terminal 5 can display the received confirmation item. By repairing the air conditioner 1 in accordance with the confirmation items displayed on the mobile terminal 5, the service engineer having the mobile terminal 5 can perform a failure diagnosis reflecting the device history.
<Features>
In the air-conditioning equipment failure diagnosis system according to the present embodiment, the check item specified by the check item specifying unit 21 can be changed by the check item changing unit 23 based on the history information. Thereby, it is possible to perform a more appropriate failure diagnosis in consideration of the history of the air conditioner 1. Therefore, a service engineer who is the first time to handle the air conditioner 1 to be subjected to a failure check, or a service engineer who has experience in repairing the target air conditioner 1 can also check the cause of the failure based on the past history. Becomes possible.
[0031]
The history information is obtained by the information confirmation means 22 based on the device information such as the detection result of the sensor provided in the air conditioner 1 and the current operation status, and the repair information of the air conditioner 1, and is stored in the storage unit 13. It is memorized. The equipment information and repair information include the air conditioning equipment subject to failure diagnosis, the air conditioning equipment installed in the same environment as the air conditioning equipment (such as installed in the same building), and the same model as the air conditioning equipment Air conditioner information is included.
In addition, device information of the air conditioner 1 measured at the site where the air conditioner 1 is repaired by the service engineer is input from the portable terminal 5 and transmitted to the management server 4, and history information is obtained by the information confirmation unit 22. . With this history information, it is possible to further add a check item of the failure diagnosis or change the order. Therefore, the processing unit 12 can obtain more detailed device information in addition to the detection result of the sensor of the air conditioner 1, and can more appropriately specify the check items for the failure diagnosis of the air conditioner 1. It becomes possible.
[0032]
<Other embodiments>
(A)
In the failure diagnosis system for an air conditioner according to the present embodiment, the processing unit 12 of the management server 4 specifies a failure cause confirmation item. Based on this confirmation item, the cause of the failure is specified by the service engineer at the site where the air conditioner 1 is installed. However, when the confirmation item designating unit 21 designates a confirmation item for remotely diagnosing a failure of the air conditioner 1 based on a detection result of a sensor obtained at a remote place or the like, the confirmation item changing unit 23 stores the confirmation item in the storage unit. The management server 4 may specify a failure at a remote location reflecting the history by adding confirmation items or changing the order based on the history information 13. In this case, the service engineer who repairs the air-conditioning apparatus 1 only needs to repair the cause of the failure specified by the management server 4, so that quick repair can be performed. Items required for repair can be minimized.
[0033]
(B)
In the air-conditioning equipment failure diagnosis system according to the present embodiment, a confirmation item is transmitted from the communication unit 11 of the management server 4 to the mobile terminal 5. A service engineer who checks and repairs a failure of the air-conditioning apparatus 1 confirms using a failure diagnosis confirmation item displayed on the mobile terminal 5. However, the management server 4 may further include an output unit, and the data may be output from the output unit to a printing unit such as a printer, and the confirmation item may be printed from the printer. In this case, the service engineer goes to check the failure of the air conditioner 1 with the printed check item sheet. Accordingly, it is possible to confirm the failure diagnosis check items without the service engineer having the portable terminal 5.
[0034]
(C)
In the air-conditioning equipment failure diagnosis system according to the present embodiment, the mobile terminal 5 can receive input of device information and repair history of the air-conditioning apparatus 1 and transmit the input to the management server 4. Here, in addition to the mobile terminal 5, an input terminal capable of inputting device information and the like may be provided in, for example, a service center, and the input terminal and the management server 4 may be connectable. In this case, for example, the service engineer may not input the device information or the like at the repair site of the air-conditioning apparatus 1 but input it at the service center. This allows a service engineer who does not have the mobile terminal 5 to input device information and the like, and further enhances history information based on the device information of the air-conditioning apparatus 1.
[0035]
(D)
In the failure diagnosis system for an air conditioner according to the present embodiment, the processing unit 12 of the management server 4 specifies a failure diagnosis confirmation item of the air conditioner 1. The designated confirmation item is confirmed at the site where the air conditioner 1 is installed by a service engineer or the like. However, when the processing unit 12 of the management server 4 performs a failure prediction of the air conditioner 1, the confirmation item changing unit 23 adds a failure prediction confirmation item based on the history information and changes the order of the order, as in the present embodiment. Changes may be made.
[0036]
(E)
In the air-conditioning equipment failure diagnosis system according to the present embodiment, the station 2 is a separate member from the air-conditioning apparatus 1. However, a system that performs a failure diagnosis on the air conditioner 3 including the air conditioner 1 having the function of the station 2 may be used.
(F)
In the air-conditioning equipment failure diagnosis system according to the present embodiment, the failure diagnosis is performed for the air-conditioning equipment 3 including the plurality of air conditioners 1 and the stations 2 installed in the building 91. However, the present invention is not limited to what is called a building air conditioner, but can be applied to an air conditioner that can utilize history information.
[0037]
【The invention's effect】
In the failure diagnosis system according to the first aspect, since a confirmation item of the failure diagnosis can be changed based on the history information, a more appropriate failure is determined based on the past history of the air conditioner to be subjected to the failure diagnosis. Diagnosis can be performed.
In the failure diagnosis system according to the second aspect, since the first device information can be detected by the detection unit of the air conditioner, the check item can be automatically changed in the diagnosis server.
[0038]
In the failure diagnosis system according to the third aspect, since the operation time is included in the device information, it is possible to change the confirmation item based on the operation time.
In the failure diagnosis system according to the fourth aspect, since the input device capable of inputting the second device information is provided, the diagnosis server can determine the check item by using the history information based on the device information that cannot be detected by the air conditioner, for example. Changes can be made.
In the failure diagnosis system according to the fifth aspect, the confirmation item can be confirmed by the confirmation terminal. Since the confirmation terminal can be received from the diagnostic server and is portable, it is possible to refer to the confirmation items at the site where the air conditioner is repaired.
[0039]
In the failure diagnosis system according to the sixth aspect, for example, third device information is added to the diagnosis server from a site where the air conditioning equipment is repaired, and the confirmation item changing unit further confirms the history information based on the device information including the third device information. The item can be changed, and the result can be received by the confirmation terminal.
In the diagnostic server according to the seventh aspect, since the check item of the failure diagnosis specified by the check item specifying unit can be changed by the check item changing unit, the diagnosis server can be changed based on the past history of the air conditioner targeted for the fault diagnosis. Thus, more appropriate failure diagnosis can be performed.
[0040]
In the diagnostic server according to claim 8, since the communication unit can receive the second device information, for example, the communication unit receives the second device information based on the device information that is difficult to automatically detect by the air conditioning equipment. The confirmation item changing means can change the confirmation item based on the history information based on the device information including the second device information.
In the diagnostic server according to the ninth aspect, the confirmation item specified by the diagnostic server can be output by the output unit. The output unit is connected to a printing unit such as a printer, for example, and can print a confirmation item, or can transmit a confirmation item possessed by a service engineer or the like to a receiving terminal that can display the confirmation item.
[Brief description of the drawings]
FIG. 1 is a schematic diagram of a failure diagnosis system for an air conditioner.
FIG. 2 shows confirmation items for failure diagnosis. (A) Normal order of confirmation items. (B) Change the order of confirmation items when there are many failures of the predetermined sensor. (C) Items to be checked are added for air conditioners whose operating time is longer than specified and the heat exchanger is easily contaminated.
[Explanation of symbols]
1 air conditioner
2 stations
3 air conditioning equipment
4 Management server
5 mobile terminals
9 Communication network
11 Communication unit
12 processing unit
13 Memory
21 Confirmation item designation means
22 Information confirmation means
23 Confirmation item change means
91 Building
92 Management Center

Claims (10)

A failure diagnosis system for diagnosing a failure of a plurality of air conditioners (3),
An information transmitting means (2) capable of transmitting device information of the air conditioner (3);
A diagnosis server (4) for designating a check item for failure diagnosis of the air conditioner (3) based on history information based on the device information and past repair information of the air conditioner (3);
A failure diagnosis system comprising: The failure diagnosis system according to claim 1, wherein the diagnosis server (4) is capable of adding the confirmation items and changing the order according to the history information. First device information that is at least a part of the device information is detected by a detection unit provided in the air conditioning equipment (3).
The failure diagnosis system according to claim 1. The failure diagnosis system according to claim 3, wherein the first device information includes an operation time of the air conditioner (3). The fault diagnosis system according to any one of claims 1 to 4, further comprising an input device (5) for inputting second device information that is at least a part of the device information. The failure diagnosis according to any one of claims 1 to 5, further comprising a portable confirmation terminal (5) capable of receiving the confirmation item specified by the diagnosis server (4) from the diagnosis server (4). system. The failure diagnosis system according to claim 6, wherein the confirmation terminal (5) can input third device information that is at least a part of the device information. A diagnostic server (4) for diagnosing a failure of a plurality of air conditioners (3),
A communication unit (11) capable of receiving device information of the air conditioner (3);
Confirmation item designation means (21) for designating a confirmation item of the failure diagnosis of the air conditioner (3);
Information checking means (22) for checking history information based on the device information and past repair information of the air conditioning equipment;
A confirmation item change unit (23) for adding the confirmation items and changing the order according to the history information confirmed by the information confirmation unit (22);
A diagnostic server (4) comprising: The diagnostic server (4) according to claim 8, wherein the communication unit (11) is capable of accepting an input of second device information that is at least a part of the device information. The diagnostic server (4) according to claim 8 or 9, further comprising an output unit (11) for outputting the confirmation item.

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