JP2009019780A - Electric device and service method of electric device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electric device capable of easily replacing a control board by supplying electricity to an exchanged-side control board and an exchanging-side control board from one power source, storing an integrated amount stored in a nonvolatile storing means of the exchanged-side control board in a nonvolatile storing means of the exchanging-side control board, and replacing the exchanged-side control board with the exchanging-side control board. <P>SOLUTION: This electric device has the control board having the nonvolatile storing means for storing the integrated amount of use time or use electric energy of the electric device, and a microcomputer for performing the writing to the nonvolatile storing means, and the control board has a connector integrally comprising a power source terminal for receiving or supplying electricity, and a transmission terminal for transmitting the integrated amount called up from the nonvolatile storing means by the microcomputer. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an electric device and a service method of the electric device, and in particular, an electric device having a control board on which nonvolatile storage means for storing various data such as an accumulated value of the usage time or the amount of electric power used of the electric device, The present invention relates to a service method for electrical equipment.

  2. Description of the Related Art In recent years, electric devices such as an air conditioner have accumulated and stored the use time of an air conditioner in order to diagnose a failure and grasp data. The accumulated usage time includes methods such as counting the time when the air conditioner is ON, or counting the indoor fan operation time that is substantially equal to the usage time.

  Such usage time integration data is stored in a non-volatile memory so that the storage of the air conditioner is retained even if the air conditioner is turned off, the power supply is restored again, and the operation time integration is resumed when the operation is performed. An element such as an EEPROM is used (see, for example, Patent Document 1).

  The EEPROM stores not only such usage time data but also setting data related to the air conditioner as various data. For this reason, when a control board (printed board) fails, it is necessary to store various data such as use time data and setting data stored in the EEPROM at the time of replacement in the EEPROM on the new control board.

  Therefore, an air conditioner has been proposed in which EEPROM data can be transmitted and received on the control board, the data of the failed board is transmitted to the outside, and the transmitted data is stored in the EEPROM on the new control board. (For example, refer to Patent Document 2).

  However, the air conditioner described in Patent Document 2 causes EEPROM data to be transmitted to an external read / write device from a substrate that must be replaced once (failed substrate), stored in the read / write device, and then read out. The EEPROM data of the board to be replaced is written in the EEPROM of the new board after replacement by using a writing device, and the data between the two boards, the board to be replaced and the new board, must be exchanged. In order to send and receive signals between the two control boards, a power source is required for each board.

  However, at the actual site where the board must be replaced, there is only one air conditioner in which this board is incorporated, and therefore there is usually only one power source and power cannot be supplied to both boards.

For this reason, a new power supply for supplying the operating power of the board is required for board replacement, resulting in a problem of poor serviceability.
JP 2004-156829 A Japanese Patent No. 3829208

  The present invention has been made in consideration of the above-described circumstances. The power supply can be supplied from one power source to the exchange-side control board and the exchange-side control board, and the integration stored in the nonvolatile storage means of the exchange-side control board. The electric device that stores the quantity in the non-volatile storage means of the exchange-side control board and replaces the exchange-side control board with the exchange-side control board, thereby enabling easy exchange of the control board, and service method for the electric equipment The purpose is to provide.

  In order to achieve the above-described object, an electrical device according to the present invention includes a control board having a nonvolatile storage means for storing data of the electrical equipment, a microcomputer for reading and writing the nonvolatile storage means, and the control board. A power supply circuit provided on the power supply for supplying operating power of the microcomputer by inputting a commercial power supply; a power supply terminal capable of receiving power to the microcomputer or supplying the output of the power supply circuit to the outside; and the nonvolatile by the microcomputer And a connector integrally provided with a transmission terminal for transmitting the data called from the sex storage means.

  The electrical device according to the present invention includes a non-volatile storage means for storing data of the electrical device, a control board having a microcomputer for reading and writing the non-volatile storage means, and a commercial board provided on the control board. A power supply circuit for supplying operating power to the microcomputer by inputting power, and a power supply terminal provided on the control board and capable of receiving power to the microcomputer or supplying the output of the power supply circuit to the outside by the microcomputer And a connector integrally including a transmission terminal for transmitting the data called from the nonvolatile storage means and a reception terminal for receiving the data transmitted from the outside.

  In addition, the service method of the electrical equipment according to the present invention includes a non-volatile storage unit that stores an accumulated value of usage time or power consumption, and a replacement-side control board having a microcomputer that reads and writes the non-volatile storage unit. And an exchange-side control board having a microcomputer for writing to the nonvolatile storage means, and a non-volatile storage means for storing an accumulated value of usage time or power consumption, and the exchanged side The control board and the exchange side control board are connected by a connection line including a communication line and a power supply line, and power is supplied from one control board of the exchange side control board or the exchanged side control board to the other control board. And calling and transmitting the integrated amount stored in the non-volatile storage means by the microcomputer of the exchange-side control board, By the microcomputer of the exchange side control board and to store the accumulated amount in the nonvolatile storage means.

  According to the electrical device of the present invention, various data stored in the nonvolatile storage means of the replacement-side control board can be easily moved and stored in the nonvolatile storage means of the replacement-side control board, and the control board can be easily replaced. It is possible to provide electrical equipment with high serviceability.

  In addition, according to the service method of the electrical equipment according to the present invention, various data stored in the nonvolatile storage means of the exchanged control board can be easily moved and stored in the nonvolatile storage means of the exchange control board, It is possible to provide a service method for a highly serviceable electrical device that facilitates replacement of the control board.

  An electrical apparatus according to an embodiment of the present invention will be described with reference to the accompanying drawings, taking an air conditioner as an example.

  FIG. 1 is a conceptual diagram of an air conditioner according to the present embodiment, FIG. 2 is a development view of an electric component box that accommodates a control board used in the air conditioner, and FIG. 3 is a control block used in the air conditioner. FIG. In addition, the components which do not attach | subject a code | symbol are not shown in figure.

  As shown in FIG. 1, the air conditioner 1 includes an indoor unit 2 that includes a main body cover 2 a, an outdoor unit 3, and a remote controller 4 that instructs the operation of the air conditioner 1.

  The indoor unit 2 includes an indoor heat exchanger that is blown by the indoor blower, and the outdoor unit 3 includes a compressor, an outdoor heat exchanger that is blown by the outdoor blower, an electronic expansion valve, and a four-way valve.

  Further, an electrical component box 5 is accommodated in the side portion of the indoor unit 2.

  As shown in FIG. 2, the electrical component box 5 has a flat box shape, and is composed of a flat U-shaped component box body 6 and a lid body 7, and is attached to the component box body 6 so that the control board 8 is installed in the electrical component box 5. To house.

  Replacement of the control board 8 is performed by removing the main body cover 2a and removing the lid 7 that covers the control board 8. The control board 8 receives an infrared command signal from the remote controller 4, communicates with the controller of the outdoor unit 3, and controls various electrical components in the indoor unit 2, an indoor fan, a display unit, a wind direction changing plate, and the like. .

  As shown in FIG. 3, the control board 8 functionally includes a usage time integration unit that stores an integration value of the usage time and power consumption of the air conditioner 1, and an integration value integrated by the usage time integration unit. In addition, various setting codes can be read, written, and erased freely, and nonvolatile storage means is provided that does not erase the contents even when the power is turned off. The microcomputer 9 is used as a component for reading, writing, and erasing the usage time integrating means and the nonvolatile storage means, and the EEPROM 10 is used as the nonvolatile storage means. In the microcomputer 9, the internal CPU executes a program stored in advance in the ROM, thereby accumulating the usage time and reading, writing, and erasing the EEPROM 10.

  The control board 8 (printed board) is provided with a rectifier 11 connected to the commercial power supply P via the plug 2b, and a control power supply circuit 12 connected to the rectifier 11 and outputting, for example, DC 5V. The direct current output of the control power supply circuit 12 is supplied to the microcomputer 9 and the EEPROM 10 via the pattern wiring provided on the control board 8. Plug 2b is connected to a power supply terminal 2c provided on control board 8 through a power supply line.

  Further, the energization detecting means 13 for detecting energization from the commercial power source, for example, a power interruption detection circuit (a circuit for detecting 0 cross from the AC waveform of the commercial power source and detecting that the cycle is 50 Hz or 60 Hz) is a control board. 8 is connected to the input line of the commercial power supply P in parallel with the control power supply circuit 12, and the output signal of the energization detecting means 13 is input to the microcomputer 9.

  Input / output terminals of the microcomputer 9 and the EEPROM 10 are commonly connected to communication terminals t 1 and t 2 of a connector 14 provided in the vicinity of the outer periphery of the control board 8. The connector 14 is provided with power terminals t3 (plus 5V) and t4 (ground) connected to the control power circuit 12, and the power terminals t3 and t4 and the communication terminals t1 and t2 have a plurality of terminals. A single connector 14 is provided. That is, the power supply terminal and the transmission terminal are provided integrally with the connector 14.

  Therefore, if a predetermined voltage (5 V) is supplied from the outside to the power supply terminals t3 and t4 of the connector 14, the operating power is supplied to the microcomputer 9 and the EEPROM 10 on the control board 8 even if the control power supply circuit 12 is not connected to the commercial power supply. Therefore, these components can be operated, and further, by connecting the communication lines connected to the communication terminals t1 and t2 of the connector 14, the air conditioner 1 can be connected to the control board 8 even when no power is supplied. Power supply and data transmission / reception are possible. Further, when the air conditioner 1 is receiving power, that is, when the commercial power supply P is connected to the control power supply circuit 12, power supply to other non-powered control boards and transmission / reception of data via the cable connected to the connector 14 are possible. It becomes possible.

  In this embodiment, the example in which various data are stored, the operation time is accumulated, and the accumulated operation time is erased and written by the microcomputer 9 and the EEPROM 10 is described. However, the flash microcomputer incorporating a nonvolatile memory element is described. May be used.

  Also, a current detector for detecting the current consumption of the electrical device is provided, and the amount of power is calculated by a microcomputer from the detected current value of the current detector, and the calculated amount of power is integrated and stored in the EEPROM 10. Thus, it is also possible to configure a power amount integrating means.

  Next, in the electrical equipment according to the present invention, when the control board 8 fails, a service method for replacing the control board with a new control board will be described with reference to FIG. 4 and in accordance with the control flowchart shown in FIG. I will explain.

(Embodiment 1)
In the first embodiment, a new control board (hereinafter referred to as a new control board 8N) to be replaced with a failed control board (hereinafter referred to as an old control board 8) is common, and the new control board 8N is the same micro as the old control board 8. A computer 9N, an EEPROM 10N and a connector 14N are provided and have the same control program. However, the various data stored in the EEPROM 10N contain nothing or defaults (initial values). For this reason, in the case of Embodiment 1, the control board incorporated in the air conditioner from the beginning and the control board for exchange can be made common, and there exists an advantage that production and inventory management become easy.

  On the other hand, the EEPROM 10 of the faulty old control board 8 stores various setting data of the faulty air conditioner 1 and the integrated value of the usage time and the cumulative power amount until the faulty stop.

  As a procedure for replacing the control board, first, a new control board 8N is prepared, the electric component box 5 is detached from the air conditioner 1, and the old control board 8 is removed from the electric component box 5, and the old control board 8 is removed. The wiring to the plug 2b connected to is removed from the power supply terminal 2c.

Subsequently, the removed plug 2b is connected to the power supply terminal 2c of the new control board 8N.

  Here, as shown in FIG. 4, the new control board 8N and the old control board 8 are connected via the connector 14N and the connector 14 with the prepared connection line W, thereby enabling power feeding and signal transmission / reception. .

  The new control board 8N and the old control board 8 are connected by connecting the connector plug po provided at one end of the connection line W to the connector 14 and connecting the connection plug pi provided at the other end of the connection line W to the new control board 8N. This is done by connecting to the connector 14N provided in the above. Of course, the connection plug po and the connection plug pi have the same shape.

  In the figure, reference numeral 12N is a control power supply circuit, 11N is a rectifier, and 13N is an energization detecting means.

  Subsequently, the plug 2b connected to the new control board 8N is inserted into the outlet of the commercial power source P.

  As a result, power is supplied from the new control board 8N connected to the commercial power supply P to the old control board 8 in a non-powered state via the connection line W, and the microcomputers on the new control board 8N and the old control board 8 are supplied. Circuit components such as 9, 9N, EEPROM 10, 10N start operation.

  The operation of the control board 8 (8N) will be described with reference to FIG.

  The microcomputer 9 (9N) determines whether or not the connector 14 (14N) is connected (S1). Whether or not the connector is connected is detected based on the voltages of the communication terminals t1 and t2. When the connector is not connected, the communication terminals t1 and t2 are open, so there is no voltage output. However, when the connector is connected, a voltage output such as 5 V can be detected.

  When the connector is connected (Yes), it is determined whether or not the energization detecting means 13 (13N) detects energization (S2). Here, the microcomputer 9 (9N) determines whether or not it is connected to the commercial power source and switches between the data supply side and the data reception side. Here, when energization is detected (when commercial power is connected), the microcomputer 9 (9N) enters the data reception mode (reception side), and when energization is not detected (power from the connector 12 (12N)) In the case of supply), the microcomputer enters the data transmission mode (transmission side).

When the energization is detected (Yes in S2), the microcomputer 9N requests the microcomputer 9 to transmit various setting data Da including the accumulated operation time data of the EEPROM 10 (S3).
Thereafter, it waits for reception of data Da (S4).
When the data Da is received (Yes in S4), the transmitted data Da is stored in the EEPROM 10N (S5). When the data Da is stored in the EEPROM 10N, the normal operation processing state is entered.

  In S1, when there is no connection of the connector (No), the control board is not exchanged, and the normal operation processing state is set (S8).

On the other hand, if no energization is detected in S2, that is, if the control board is the old control board 8, a transmission request for data Da in the EEPROM 10 is awaited (S6).
When there is a transmission request for data Da (Yes in S6), various data Da stored in the EEPROM 10 are transmitted (S7).
After that, since it is the old control board 8 on the exchange side that transmits the various data Da in S7, it enters a standby state and does not operate (S9).

  As a result of the above control operation, the transfer of various data in the EEPROM 10 of the old control board 8 to the EEPROM 10N of the new control board 8N is completed.

  Accordingly, after connecting the new control board 8N to the commercial power supply P using the plug 2b, the service person waits for an appropriate time, for example, 1 minute, for data exchange between the old and new control boards, and then both control boards 8 By removing the connector connection between 8N, various data in the EEPROM can be transferred very easily. Subsequently, the service person closes the lid of the electrical component box 5 containing the new control board 8N, and incorporates it into the air conditioner 1 to complete the replacement work.

  In the first embodiment described above, the old control board 8 is removed and the new control board 8N is connected to the commercial power supply P. However, the software and replacement procedure of the microcomputer 9 in the control board 8 are changed to replace the old control board 8 with the old control board 8N. It is also possible to connect to the commercial power source P and perform a transfer operation of various data in the EEPROM 10 to the EEPROM 10N of the new control board 8N. In the case of this modification, the side connected to the commercial power supply P is the old control board 8 and the side supplied with power from the connector 14 is the new control board 8N. Therefore, the control software is YES in step S1 of the flowchart shown in FIG. And the NO branch is reversed.

  In this case, the electrical component box 5 is removed from the air conditioner 1, the exposed old control board 8 and the new control board 8N are connected by the connection line W, and the plug 2b of the old control board 8 is connected to the commercial power supply P. Plug into the wall outlet. As a result, operating power is supplied to both the old control board 8 and the new control board 8N, and various data transfer operations are started.

  Since the data migration processed by software is the opposite of the YES and NO branches in step S1, on the side where the power is supplied from the commercial power source P, that is, on the old control board 8 side, the other side by S6 and S7 The new control board 8N on the side that does not supply power from the commercial power supply P receives the various data Da of the other party and writes it in its own EEPROM in S4. Is done. In this modification, when energization is detected (when a commercial power supply is connected), the microcomputer 9 (9N) is in a data transmission mode (transmission side), and energization is not detected (connector 12 (12N)). The microcomputer 9 (9N) is in a data reception mode (reception side).

  After the data transfer is completed, the plug 2b is removed from the outlet, the old control board 8 is removed from the electrical component box 5, and the wiring to the plug 2b connected to the old control board 8 is removed from the power supply terminal 2c. After that, the plug 2b removed from the old control board 8 is connected to the power supply terminal 2c of the new control board 8N, and stored in the electric component box 5, and stored in the predetermined storage location of the indoor unit 2 of the air conditioner 1. Replacement work is completed.

(Embodiment 2)
In the second embodiment, like the first embodiment, the old control board and the new control board are common, and the new control board includes the microcomputer 9N, the EEPROM 10N, and the connector 14N, as in the old control board, and a common control program. Have In this embodiment, since the integrated value of the used time or the used electric energy stored in the EEPROM is used for the discrimination between the old control board and the new control board, the used time or the used electric energy is integrated and the integrated value thereof. Must be stored in the EEPROM. On the other hand, in the above-described Embodiment 1 and Embodiment 3 described later, it is not essential to integrate the usage time or the amount of power used and store the integration value in the EEPROM.

  As a work procedure for replacement, first, the old control board 8 and the new control board 8N are connected by the connection line W.

  A commercial power supply is connected to the old control board 8 or the new control board 8N. As a result, operating power is supplied to the new and old control boards 8 and 8N from the power terminals t3 and t4 of the connector 14 or the commercial power source P, and the operation starts as shown in the flowchart of FIG. In this embodiment, since the control software of the new and old control boards 8 and 8N is the same, FIG. 6 is common to both control boards.

  The old or new control board 88N determines whether or not the connector is connected (S11).

  If the connector is connected (Yes), it is determined whether or not there is reception of various data (Da) including the usage time or the integrated value da of the power consumption sent from the other party (S12).

  When various data (Da) is received (Yes in S12), it is determined whether or not reception of various data (Da) of the partner is completed (S13), and reception of various data (Da) is completed (Yes) ), Various data (Db) including the integrated value db of usage time or power consumption stored in its own EEPROM is transmitted (S14).

  If the connection of the connector is not detected in S11 (No), the control board is not being replaced, and the normal operation processing state is set (S20).

  In S12, when there is no reception of the partner's various data (Da) (No), various data (Db) including the accumulated time db or the usage time or power consumption stored in its own EEPROM is transmitted to the partner. (S17) After that, it waits for reception of various data (Da) of the other party (S18), and repeats until reception of various data (Da) from the other party is completed (S19).

  As a result of the above processing, the various data (Db) is transmitted to the counterpart control board in S14 or S17, and conversely, the various data (Db) in the counterpart EEPROM is received in S13 or S19.

  In S15 following S19 or S14, the accumulated value da of the usage time or the used electric energy included in the partner's various data (Da) is the accumulated value db of the used time or the used electric energy included in the own various data (Db). Judge whether it is larger. If the partner's integrated value data (da) is larger than its own integrated value data (db) (Yes), the partner's various data (Da) is stored in the EEPROM 10N (S16). Here, the integrated value data corresponding to the operation until the replacement is stored in the EEPROM 10 of the old control board 8, but since the new control board 8N is new, the integrated value data is “0”. . Therefore, of the two connected control boards 8 and 8N, the side with the larger integrated value data stored in the respective EEPROMs 10 and 10N is the old control board 8, and the side with the smaller integrated value data is the new control board 8. Therefore, in S16, the various data on the side with the larger integrated value data are stored in the control board on the side with the smaller integrated value data, so that the various data on the old control board 8 are automatically copied to the EEPROM of the new control board 8N. The As a result, the transfer of various data of the old control board 8 is completed by the new control board 8N.

  Subsequently, when the operation integration time data is stored in the EEPROM 10N, the normal operation processing state is set.

  On the other hand, when the other party's integrated value data (da) is not larger than the self-operation integrated time data (Db) (No), since it is the old control board 8, no operation is performed thereafter, and a standby state is entered (S151).

  Therefore, after connecting the air conditioner 1 to the commercial power supply P, the service person waits for an appropriate time, for example, 1 minute, between the new and old control boards to exchange data, and then connects the connectors between the control boards 8 and 8N. By removing the connection, various data in the EEPROM can be transferred very easily.

  In the second embodiment, the integrated value of usage time or power consumption must be stored in the EEPROM. However, if either the old control board 8 or the new control board 8N is connected to the commercial power supply P, it is automatically set. Since various data are transferred from the old control board 8 to the new control board 8N, the control board replacement procedure is less restricted than in the first embodiment, the workability is good, and there is no mistake.

(Embodiment 3)
In the third embodiment, the old control board 8 and the new control board 8N have the same circuit and component (hardware) configuration, only the software is different, and the old control board is a control board built in the air conditioner from the beginning of sales. 8 transmits various data in the EEPROM 10 when the connector is connected, and the new control board 8N, which is a service replacement board, writes the various data received through the communication terminal to the EEPROM 10N when the connector is connected. It is composed.

  As a work procedure for replacement, first, the old control board 8 and the new control board 8N are connected by the connection line W. Thereby, the operating power is supplied to the new and old control boards 8 and 8N from the power terminals t3 and t4 of the connector 14 or the commercial power source P, and the operation is started. First, the control operation on the old control board 8 side will be described with reference to FIG.

  The old control circuit 8 determines whether or not the connector 14 is connected (S21). Here, when the connector 14 is connected (Yes of S21), various self-data (Dc) is transmitted (S22). In this state, the old control board 8 is in a state where it can be replaced due to a failure. Therefore, after transmitting the various data (Dc), the driving operation is not executed, and the standby state is stopped (S24).

  In S21, when the connector 14 is not connected (No), the old control board 8 is in a normal operation processing state since it is in a normal state before failure (S23).

  On the other hand, a control flowchart for the new control board 8N is shown in FIG. When the operating power is supplied from the power supply terminals t3 and t4 of the connector 14 or the commercial power supply P in the new control board 8N, the operation starts.

  First, the new control circuit 8N determines whether or not the connector 14 is connected (S31). Here, when the connector 14 is connected (Yes of S31), it waits until various data (Dc) is received from the other party, ie, the control board 8 (S32).

  When various data (Dc) of the control board 8 is received via the connector 14 (Yes in S32), the received various data (Dc) is stored in the EEPROM 10N (S32), and a normal operation processing state is set.

  In S31, when the connector 14 is not connected (No), the data rewriting is completed, not the data rewriting state, and the state is already incorporated in the air conditioner, so that the normal operation processing state is entered ( S34).

  In the case of the third embodiment as well, as in the second embodiment, either the old control board 8 or the new control board 8N may be incorporated into the air conditioner 1 and connected to the commercial power supply. The incorporation of 8N into the air conditioner 1 may be performed before or after storing the accumulated operation time data of the EEPROM 10 in the EEPROM 10N. However, in the case of the third embodiment, since the new control board 8N is a board dedicated for replacement, there is a problem that the number of products increases and inventory management becomes troublesome. In addition, once a new control board 8N is replaced with a new control board 8N, the EEPROM data cannot be transferred to the next new control board by the above procedure. Some other trick is needed to make it happen.

  As described above, in the air conditioner of each embodiment, the control board 8 is provided with the microcomputer 9 and the EEPROM 10, and the control board 8 is integrated with the communication terminals t 1 and t 2 and the power supply terminals t 3 and t 4 for supplying power to the control board 8. Since the connector 14 provided on the control board is provided, power can be supplied from one control board to the other control board simply by connecting the two control boards via the connector 14, and from the EEPROM of the control board to be replaced Various data can be easily transferred to the EEPROM of the new control board to be replaced.

  In addition, according to the service method of the electrical device of the present embodiment, the service person simply connects the two control boards via the connector 14 and calculates the accumulated operation time stored in the EEPROM of the control board to be replaced. It is possible to move and store data in the EEPROM of a new control board, and to realize a service method for an electrical device in which the control board can be easily replaced.

  In each of the above-described embodiments, the example has been described in which various data including the integrated value of the operating time or the amount of power used is transferred from the replacement control board EEPROM 10 to the EEPROM 10N, but various air conditioners are included in the various data. Since there is a set value of 1, there may be cases where data that does not need to be relocated and data that causes problems when relocated are included. For this reason, the various data to be moved may be set in advance so as to be the minimum data necessary for service and operation control. At least the accumulated value of usage time or power consumption used for failure detection and device / part life prediction needs to be data to be transferred.

  In the above description, the air conditioner has been described as an example of the electric device. However, the present invention is applied to various electric devices that store device data in a nonvolatile storage element, such as household electric products and various devices for business use. Is possible.

The conceptual diagram of the air conditioner which concerns on one Embodiment of this invention. The expanded view of the electrical component box integrated in the air conditioner which concerns on one Embodiment of this invention. The conceptual diagram of the control board integrated in the air conditioner which concerns on one Embodiment of this invention. The conceptual diagram which shows the connection state of the old control board incorporated in the air conditioner which concerns on one Embodiment of this invention, and a new control board. The control flowchart figure of 1st Embodiment at the time of the service of the air conditioner which concerns on one Embodiment of this invention. The control flowchart figure of 2nd Embodiment at the time of the service of the air conditioner which concerns on one Embodiment of this invention. The control flowchart figure by the side of the old control board of 3rd Embodiment at the time of the service of the air conditioner which concerns on one Embodiment of this invention. The control flowchart figure by the side of the new control board of 3rd Embodiment at the time of service of the air conditioner which concerns on one Embodiment of this invention.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Air conditioner, 2 ... Indoor unit, 2a ... Main body cover, 3 ... Outdoor unit, 4 ... Two-way remote control, 5 ... Electric component box, 6 ... Parts box main body, 7 ... Cover, 8 ... Control board, 9 DESCRIPTION OF SYMBOLS: Microcomputer, 10 ... EEPROM, 11 ... Rectifier, 12 ... Control power supply circuit, 13 ... Current supply detection means, 14 ... Connector, t1, t2 ... Communication terminal, t3, t4 ... Power supply terminal.

Claims (5)

A control board having a non-volatile storage means for storing data of electrical equipment and a microcomputer for reading and writing the non-volatile storage means;
A power supply circuit provided on the control board for supplying operating power of the microcomputer by inputting a commercial power supply, a power supply terminal capable of receiving power to the microcomputer or supplying the output of the power supply circuit to the outside, and the microcomputer An electrical apparatus comprising: a connector integrally provided with a transmission terminal for transmitting the data called from the non-volatile storage means. A control board having a non-volatile storage means for storing data of electrical equipment and a microcomputer for reading and writing the non-volatile storage means;
A power supply circuit provided on the control board for supplying operating power to the microcomputer by inputting a commercial power supply;
A power supply terminal provided on the control board and capable of receiving power to the microcomputer or supplying the output of the power supply circuit to the outside, a transmission terminal for transmitting the data called from the nonvolatile storage means by the microcomputer, and an external An electrical apparatus comprising: a connector integrally provided with a receiving terminal for receiving the transmitted data. The data includes at least an integrated value of usage time or electric energy, and the microcomputer calculates an integrated value stored in the nonvolatile storage means and an integrated value included in data received through the receiving terminal. 3. The electric device according to claim 2, wherein a comparison is made and whether or not the various data received according to the comparison result is stored in the nonvolatile storage means is determined. Furthermore, a detection circuit for detecting whether or not an AC power supply is input is provided on the control board, and the microcomputer stores the various data transmitted from the outside through the communication terminal in the nonvolatile storage means, and A transmission mode for transmitting the various data called from the nonvolatile storage means to the outside through the communication terminal;
The electrical apparatus according to claim 2, wherein the microcomputer switches between the reception mode and the transmission mode according to a detection result of the detection circuit. Non-volatile storage means that stores the accumulated value of usage time or power consumption, and an electric device including a replacement-side control board having a microcomputer that reads and writes the nonvolatile storage means, and usage time or power consumption A non-volatile storage means for storing the integrated value and a replacement-side control board having a microcomputer for writing to the non-volatile storage means,
The exchange side control board and the exchange side control board are connected by a connection line including a communication line and a power supply line,
Power is supplied from one control board of the exchange side control board or the exchange side control board to the other control board,
Call and transmit the integrated amount stored in the nonvolatile storage means by the microcomputer of the exchange-side control board,
The method of servicing an electrical device, wherein the integrated amount is stored in the nonvolatile storage means by the microcomputer of the exchange side control board.

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