Abstract: When a process of writing an update program distributed from a management center ends normally during a program update process, a communication adapter executes a restart process by the update program, while retaining a program executed before the program update process. A process of verifying communication between the communication adapter and the management center is automatically executed in a state in which the update program is in execution. When the communication is normal, the program update process is ended.

Abstract: A hot water supply system includes a hot water supply device which can be connected to an external communication network via a communication repeater, and a server. The server obtains, in pairing processing of associating a mobile terminal device which can remotely control the hot water supply device with the hot water supply device, identification information of a communication repeater to which the mobile terminal device is connected, and stores the identification information along with pairing information. Besides, the server performs control to determine conditions of the remote control based on whether the identification information of the communication repeater stored in association with the hot water supply device being a remote operation destination matches identification information of the communication repeater received from the mobile terminal device in the communication, when the communication of the remote control is received from the mobile terminal device.

Abstract: In a communication system, a management server stores information about a hot water systems for each hot water system on the basis of individual identification information, and stores the individual identification information of a plurality of identification target machines for each hot water system. When the individual identification information of the plurality of identification target machines is received from a relay device, the management server collates the received individual identification information with the stored individual identification information.

Abstract: When a process of writing an update program distributed from a management center ends normally during a program update process, a communication adapter executes a restart process by the update program, while retaining a program executed before the program update process. A process of verifying communication between the communication adapter and the management center is automatically executed in a state in which the update program is in execution. When the communication is normal, the program update process is ended.

Abstract: A relay device and a hot water supply device are provided. A communication adapter downloads an update program for software update of the constituent devices of a hot water supply system from a management center via a communication network (the Internet). The downloaded update program is stored in a storage part in the communication adapter. When there is more than one software update target device, the communication adapter sequentially selects one of the target devices and sequentially transmits the update program stored in the storage part to the devices one by one via a communication line.

Abstract: To curb deterioration of user convenience due to software update of a water warmer in a communication system between a management server and the water warmer through a relay device. A communication adaptor executes first communication for inquiring of the water warmer whether or not software update accompanying writing of an update program is capable of being started. The water warmer gives a notification for obtaining a user's consent to occurrence of an unavailable period of the water warmer due to the software update in response to the first communication, and executes second communication on the communication adaptor in a case in which the user's consent is obtained with respect to the notification. The communication adaptor transmits the update program received from a server to the water warmer in response to the second communication, and the water warmer executes the software update using the received update program.

Abstract: A hot water supply system includes a hot water supply device which can be connected to an external communication network via a communication repeater, and a server. The server obtains, in pairing processing of associating a mobile terminal device which can remotely control the hot water supply device with the hot water supply device, identification information of a communication repeater to which the mobile terminal device is connected, and stores the identification information along with pairing information. Besides, the server performs control to determine conditions of the remote control based on whether the identification information of the communication repeater stored in association with the hot water supply device being a remote operation destination matches identification information of the communication repeater received from the mobile terminal device in the communication, when the communication of the remote control is received from the mobile terminal device.

Abstract: In a small-scale LAN relay adaptor for collecting various information from a hot-water supply system and transmitting the information to a management server via a wireless LAN router, three LEDs arranged in a single row and a control part for performing light emission control of the LEDs are included, wherein the control part is configured to be capable of switching an operation mode to a state display mode or a reception intensity display mode. During the state display mode, the control part issues a notification of the occurrence of three error states respectively using the three LEDs. On the other hand, during the reception intensity display mode, the control part performs reception intensity display processing for displaying the magnitude of reception intensity from the wireless LAN router using the three LEDs as a level meter.

Abstract: A communication adapter for transmitting information about a system being monitored, such as a multi-water-heater system, to a remote management apparatus and collecting information about the system being monitored allows the location of an abnormality in communication to be easily identified even when the adapter is communicably connected to the remote management apparatus via a communication relay unit, thereby improving the reliability of the information collection process. The communication adapter 11 includes a function for detecting an abnormality in communication between the communication adapter 11 and system being monitored 1, a function for detecting an abnormality in communication between the communication adapter 11 and communication relay unit 12, and a function for detecting an abnormality in communication between the communication relay unit 12 and remote management apparatus 6.

Abstract: To curb deterioration of user convenience due to software update of a water warmer in a communication system between a management server and the water warmer through a relay device. A communication adaptor executes first communication for inquiring of the water warmer whether or not software update accompanying writing of an update program is capable of being started. The water warmer gives a notification for obtaining a user's consent to occurrence of an unavailable period of the water warmer due to the software update in response to the first communication, and executes second communication on the communication adaptor in a case in which the user's consent is obtained with respect to the notification. The communication adaptor transmits the update program received from a server to the water warmer in response to the second communication, and the water warmer executes the software update using the received update program.

Abstract: A relay device and a hot water supply device are provided. A communication adapter downloads an update program for software update of the constituent devices of a hot water supply system from a management center via a communication network (the Internet). The downloaded update program is stored in a storage part in the communication adapter. When there is more than one software update target device, the communication adapter sequentially selects one of the target devices and sequentially transmits the update program stored in the storage part to the devices one by one via a communication line.

Abstract: A communication adapter for transmitting information about a system being monitored, such as a multi-water-heater system, to a remote management apparatus and collecting information about the system being monitored allows the location of an abnormality in communication to be easily identified even when the adapter is communicably connected to the remote management apparatus via a communication relay unit, thereby improving the reliability of the information collection process. The communication adapter 11 includes a function for detecting an abnormality in communication between the communication adapter 11 and system being monitored 1, a function for detecting an abnormality in communication between the communication adapter 11 and communication relay unit 12, and a function for detecting an abnormality in communication between the communication relay unit 12 and remote management apparatus 6.