KR20060073177A - Simultaneous cooling-heating type multi-type air conditioner - Google Patents

Abstract

The present invention relates to a simultaneous air-conditioning multi-air conditioner, and in particular, the present invention relates to the setting address of each indoor unit and the actual address information of each indoor unit set in the cooling and heating basin in use received from the refrigerant classification device, and whether the addresses match. By checking the address setting error between the refrigerant classifier and the indoor units on the basis of the above, it is possible to more conveniently check the address setting error between the refrigerant classifier and the indoor unit, while greatly reducing the address setting error checking time.

To this end, the air-conditioning simultaneous multi-air conditioner of the present invention includes an outdoor unit, a plurality of indoor units connected to the outdoor unit, and a cold distribution system. The outdoor unit is connected to the refrigerant classifier and the plurality of indoor units through a network to receive information. The outdoor unit classifies the refrigerant according to whether the actual address information of each indoor unit provided from the plurality of indoor units matches the setting address information of each indoor unit provided from the refrigerant classification unit. Check for addressing errors between the device and each indoor unit.

Description

Air-conditioning simultaneous multi air conditioner {SIMULTANEOUS COOLING-HEATING TYPE MULTI-TYPE AIR CONDITIONER}

1 is a refrigerant cycle diagram of a general air-conditioning simultaneous multi-air conditioner.

2 is a control block diagram of a cooling and heating simultaneous multi-air conditioner according to the present invention.

3 is a control block diagram of the outdoor unit of FIG. 2.

4 is a control block diagram of the refrigerant classification device of FIG. 2.

  5 is a schematic cross-sectional view of the refrigerant classification device of FIG. 2.

6 is a view for explaining the address setting between the refrigerant classification device and the indoor unit in the air-conditioning simultaneous multi-air conditioner of the present invention.

FIG. 7 is a diagram illustrating a case where an error is set in the address setting between the refrigerant classification device and the indoor units in FIG. 6.

8 is an example of another addressing error of FIG.

9 is an example of another addressing error of FIG.

* Description of the symbols for the main functions of the drawings *

10: outdoor unit 11: outdoor control unit

12: indoor unit number setting unit 13: refrigerant sorting unit number setting unit

14: communication interface unit 15: number matching unit

16: Address matching judgment section 17: Address setting error warning section

18: display unit 20: refrigerant sorting device

22: refrigerant sorting control unit 23: refrigerant sorting device address setting unit

24: cooling and heating basin setting unit 25: indoor unit address setting unit

26: valve driving unit 27: storage unit

28: communication interface unit 30: indoor unit

The present invention relates to a simultaneous air-conditioning multi-air conditioner, and more particularly, the connection between the refrigerant classifier and each indoor unit to classify the refrigerant so as to be provided between the outdoor unit and each indoor unit for simultaneous cooling and heating operation of each indoor unit. The present invention relates to a cooling and heating simultaneous multi-air conditioner.

In general, the air-conditioning simultaneous multi-air conditioner is a device for driving a plurality of indoor units in all rooms cooling operation, all rooms heating operation, air conditioning operation or heating main operation.

To this end, as shown in FIG. 1, the air-conditioning simultaneous multi-air conditioner includes a compressor 1A, a four-way valve 1B, an outdoor heat exchanger 1C, an expansion valve 1D, a receiver tank 1E, and an accumulator. One outdoor unit 1 having 1F, a plurality of indoor units 4 (for example, four having indoor heat exchangers 2A, 2B, 2C, 2D) and expansion valves 3A, 3B, 3C, 3D. ), A plurality of air solenoid valves 5A, 5B, 5C, 5D, and a plurality of heating solenoid valves 6A, 6B, 6C, 6D, each of which has a low temperature low pressure refrigerant or high temperature safety Refrigerant sorting device (7) for classifying the coolant so that the refrigerant flows through, and the high-pressure gas pipe (8), low-pressure gas pipe (9) provided between the outdoor unit (1) and the indoor unit (4) through the coolant sorting device (7) , High pressure liquid tube (10).

Accordingly, the air-conditioning simultaneous multi-air conditioner selectively opens and closes the plurality of on / off valves 5A, 5B, 5C, and 5D (6A, 6B, 6C, and 6D) of the refrigerant sorting device 7. All rooms heating operation to heat the whole indoor unit by controlling refrigerant inflow or refrigerant outflow, all rooms cooling operation to cool the whole indoor unit, cooling operation of a few indoor units and heating main operation to heat the remaining many indoor units, The indoor unit is heated and a cooling main body operation for cooling the remaining plurality of indoor units is performed.

In order for the indoor units to operate the indoor units in all the room cooling operation, all the room heating operation, the cooling main body operation or the heating main body operation, the refrigerant classification device allows the refrigerant to flow the low temperature low pressure refrigerant or the high temperature high pressure refrigerant to each indoor unit 4. The classification process is required, and the process of matching the piping of the refrigerant classification device and the indoor unit address is essential. This is because the low temperature low pressure refrigerant or the high temperature high pressure refrigerant may flow depending on the state of the indoor unit only when one of the various pipes of the refrigerant classification device is connected to which indoor unit.

As shown in FIG. 1, the pipes A, B, C, and D of the refrigerant classification device are connected to the indoor unit A, the indoor unit B, the indoor unit C, and the indoor unit D, respectively.

The installer enters a state where the pipe A, pipe B, pipe C, pipe D and indoor unit # 0, indoor unit # 1, indoor unit # 2, and indoor unit # 3 are matched in the microcomputer or indoor unit in the refrigerant classification device.

The refrigerant sorting device is connected to a plurality of indoor units and communication lines. For example, when the indoor unit A is cooled, the heating solenoid valve 5A of the pipe A is closed and the cooling solenoid valve 5B is opened. In contrast, when the indoor unit A is heating, the heating solenoid valve 5A of the pipe A is opened and the cooling solenoid valve 5B is closed.

Conventionally, in order to check whether the address setting between the refrigerant distribution device and each indoor unit is correct, the installer operates the compressor to operate the indoor unit # 0, the indoor unit # 1, the indoor unit # 2, and the indoor unit # 3 one by one, and then each indoor unit. The temperature sensor provided for each heat exchanger was checked to determine whether the change of the detected heat exchange temperature was correct.

However, conventionally, it is inconvenient to check the address setting error because it is necessary to determine whether the address setting is correct between the refrigerant classification device and the indoor units while operating one by one as the number of indoor units installed, and it is time to check the address setting error. This is a problem that takes a lot.

The present invention is to solve the above-mentioned problems, an object of the present invention is to simultaneously check the address setting error between the refrigerant classification device and the indoor unit more convenient air-conditioning simultaneous multi-air can significantly reduce the address setting error inspection time To provide a harmonic.

In addition, another object of the present invention is to solve the address setting error faster by informing the installer whether the address setting error occurs and the location of the pipe in which the address setting error occurs if an error occurs in the address setting between the refrigerant classification device and the indoor unit. It is to provide a simultaneous air-conditioning multi-air conditioner that can improve the installation efficiency of the system.

The air-conditioning simultaneous multi-air conditioner of the present invention for achieving the above object is installed between an outdoor unit, a plurality of indoor units connected to the outdoor unit, and the outdoor unit and the plurality of indoor units to perform the simultaneous heating and cooling of the plurality of indoor units. In the air-conditioning simultaneous multi-air conditioner having a refrigerant classifier for classifying the refrigerant so as to check the address setting error between the refrigerant classifier and each indoor unit, the outdoor unit is connected to the refrigerant classifier and the plurality of indoor unit and the network Connected to receive information, and an address setting error between the refrigerant classifier and each indoor unit according to whether or not the actual address information of each indoor unit provided from the plurality of indoor units and the setting address information of each indoor unit provided from the refrigerant classifier are matched. Characterized in that the inspection.

The outdoor unit includes a number matching unit determining whether the actual address information of each indoor unit and the set address information of each indoor unit are matched, and whether the address matches the actual address information of each indoor unit and the setting address information of each indoor unit. And an outdoor control unit for determining an address setting error according to the number matching decision result determined by the number matching decision part and the address matching decision result determined by the address matching decision part. .

The outdoor unit may include an address setting error warning unit for notifying the installer of the address setting error.

The setting address information of each indoor unit includes air-conditioning branch information and indoor unit address information set to which an indoor unit is connected among a plurality of air-conditioning branches provided to be connected to each of the plurality of indoor units in the refrigerant classification device.

The outdoor unit is characterized in that it comprises a display unit for informing the installer of the heating and cooling district information in which the address setting error occurs when the address setting error.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the drawings.

As shown in FIG. 2, the air-conditioning simultaneous multi-air conditioner according to the present invention is classified into a coolant installed between an outdoor unit 10, a plurality of indoor units 30, and an outdoor unit 10 and a plurality of indoor units 30. The outdoor unit 10, the plurality of indoor units 30, and the refrigerant classifier 20 are connected to a predetermined communication line 40 so that the device 20 and the information can be transmitted to and received from each other.

Each indoor unit 30 grasps the actual address set in the indoor unit 30 and transmits it to the outdoor unit 10 through a communication line.

The refrigerant sorting apparatus 20 grasps the setting address of the indoor unit corresponding to the indoor unit 20 connected to the pipe in its own, and transmits it to the outdoor unit 10.

The outdoor unit 10 according to whether the setting address information of each indoor unit 30 received from the refrigerant classification unit 20 and the actual address information of the indoor unit 30 received from each indoor unit 30 matches the refrigerant classification unit 20. ) And the address setting error between the indoor unit (30).

To this end, each indoor unit 30 is provided with an indoor unit address setting unit for setting the actual address information and a communication interface unit for transmitting the actual address information to the outside, respectively.

In addition, as shown in FIG. 3, the outdoor unit 10 includes an outdoor control unit 11, a communication interface unit 14, a number matching unit 15, an address matching unit 16, and an address setting unit. An error warning unit 17 and a display unit 18 are provided. At this time, the outdoor unit 10 includes an indoor unit number setting unit 12 for setting the total number of indoor units installed in the system, and a refrigerant classifier number setting unit 13 for setting the total number of refrigerant classifiers installed in the system. ) Is further provided.

The number matching unit 15 determines whether the actual address information of each indoor unit transmitted from each indoor unit 30 through the communication interface unit 14 and the setting address information of each indoor unit transmitted from the refrigerant classification device 20 are matched. Judge. The address matching unit 16 determines whether or not the address matches the actual address information of each indoor unit and the set address information of each indoor unit. The outdoor controller 11 determines an address setting error according to the number matching decision result determined by the number matching decision unit 15 and the address matching decision result determined by the address matching decision unit 16, and the address setting error. If it is determined, the address setting error warning unit 17 warns the address setting error to the installer, and as will be described later, the display unit 18 displays the cooling and heating basin information in the refrigerant classification device in which the address setting error has occurred. .

Meanwhile, as shown in FIG. 4, the refrigerant classification device 20 includes a main body 21 having a rectangular box shape. Cooling branches (for example, 6) (CA, CB, CC, CD, CE, CF) and heating branches (for example, 6) formed through the main body (HA, HB, HC, HD, HE and HF) are formed, respectively. Cooling solenoid valves (CAV, CBV, CCV, CDV, CEV, CFV) are installed in the cooling basin (CA, CB, CC, CD, CE, CF), and the cooling basin is paired with the heating basin. It is connected to one indoor unit, and when the indoor unit is cooling operation, it is a pipe connection port where refrigerant of low temperature and low pressure liquid flows, and a heating solenoid valve that can be opened and closed in the heating basin (CA, CB, CC, CD, CE, CF) HAV, HBV, HCV, HDV, HEV, HFV) are installed, and the heating basin is paired with the cooling basin and connected to one indoor unit. When the indoor unit is heating operation, the refrigerant of high temperature and high pressure gas flows. Is the piping port. For reference, hereinafter, a pair of cooling basins and heating basins are referred to as heating and cooling basins (A, B, C, D, E, and F) for convenience of explanation, and one cooling and heating basin is connected to one indoor unit. . At this time, the cooling solenoid valves (CAV, CBV, CCV, CDV, CEV, CFV) is a valve that is opened when the indoor unit matched with the cooling and heating basin during the cooling operation to allow the low-temperature low-pressure liquid refrigerant to enter the indoor unit, heating The solenoid valves HAV, HBV, HCV, HDV, HEV, and HFV are open when the indoor unit matched with the heating / cooling basin is heated to allow the refrigerant in the high temperature and high pressure gas to enter the indoor unit.

As shown in FIG. 5, the refrigerant classification device 20 includes a refrigerant classification control unit 22 that performs overall control. On the input side of the refrigerant classification control unit 22, an air conditioner for heating / cooling basin setting unit 23 for setting the use of each cooling / heating basin from the installer, and an indoor unit address setting for address setting of the indoor unit matched with each cooling / heating basin from the installer When the unit 24 and the refrigerant sorting device 20 are plural, the refrigerant sorting device address setting unit 25 which receives the address of the own refrigerant sorting device 20 from the installer to be distinguished from each other is electrically connected. It is.

In addition, a pair of air solenoid valves CAV to CFV and heating solenoid valves HAV to HFV provided at each cooling and heating branch are electrically connected to the output side of the air distribution control section 22, have.

In addition, on the input / output side of the cold distribution controller 22, a storage unit 7 for storing information set by the various setting units 23, 24, and 25, and a communication interface for communicating with an external outdoor unit 10. (28) is electrically connected.

Therefore, the refrigerant classification control unit 22 uses the presence / absence information of each cooling / heating basin inputted from the installer through the setting units 23, 24, and 25, setting address information of the indoor unit matched with each cooling / heating basin, and refrigerant classification. The address information of the device is stored in the storage unit 27 described above. Then, information stored in the storage unit 27 is transmitted to the outdoor unit 10 to determine which air-conditioning branch of the refrigerant sorting device at which address is being used in the outdoor unit 10, and what is the set address of the indoor unit matched thereto. Make sure you know.

As shown in FIG. 6, the indoor unit number setting unit 12 and the refrigerant classification unit number setting unit 13 are provided in the operation panel 50 of the outdoor unit 10. The indoor unit number setting unit 12 is a switch for setting the total number of indoor units installed in the system, and the refrigerant classifier unit setting unit 13 is a switch for setting the total number of refrigerant classifiers installed in the system. Therefore, the outdoor unit 10 can know the total number of indoor units installed in the system and the number of refrigerant classifiers.

In addition, the indoor unit address setting unit 71 is provided on the operation panel 70 of each indoor unit 30. The indoor unit address setting unit 71 is, for example, made of a rotary switch having a number of 0 to 7, and sets the indoor unit address. Therefore, each indoor unit 30 can know the actual address for each indoor unit.

On the other hand, the operation panel 60, 61 of each refrigerant | coolant sorting apparatus 20 is equipped with the refrigerant | coolant sorting device address setting part 23, the use air-conditioning basin setting part 24, and the indoor unit address setting part 25, respectively. . Therefore, each refrigerant classification device 20 can know the setting address of the indoor unit connected to it and the heating and cooling basin in use.

The refrigerant sorting device address setting unit 23 is composed of a rotary switch, and the installer sets the address of the refrigerant sorting device 20 by rotating the rotary switch.

The cooling and heating basin setting unit 24 is composed of a dip switch having six on / off switching elements, and each switching element corresponds to the cooling and heating basins of A to F (A 'to F'), respectively. It is configured to. The installer sets the heating / cooling basin by turning on the switching element corresponding to the used heating / cooling basin and turning off the switching element corresponding to the unused heating / cooling basin.

The indoor unit address setting unit 25 includes, for example, six rotary switches each having a number of 0 to 7, and the installer rotates each rotary switch according to the address of the indoor unit connected to the corresponding cooling and heating basin. Set the address.

For example, the installer may replace the indoor unit # 4, the indoor unit # 2, the indoor unit # 3, the indoor unit # 1, the indoor unit # 5, and the indoor unit # 6 in the cooling / cooling branch A, B, C, D, E, F in the refrigerant classification device # 0. Since the indoor unit is connected to all six heating and cooling basins after connecting to each other, the heating and cooling prevention zones A, B, C, D, E, and F are being used by turning on all six switching elements of the heating and cooling basin setting unit 24. Enter it. In addition, the installer operates the switches of the indoor unit address setting unit 25, respectively, the indoor unit setting address corresponding to the heating and cooling districts A, B, C, D, E, F, 4, 2, 3, 1, 5 Enter 6

In addition, the installer may connect the indoor unit # 3, the indoor unit # 7, and the indoor unit # 0 to the cooling / heating basins B 'C' and E 'in the refrigerant classification device # 1, and then to the cooling and heating basins B', C 'and E'. Since the indoor units are connected to each other, input only the switching elements corresponding to the cooling and heating branch B ', C', and E 'through the use of the heating and cooling branch setting unit 24'. do. In addition, the installer operates the switches of the indoor unit address setting unit 25 ', respectively, and inputs the indoor unit addresses 3, 7, 0 corresponding to the cooling and heating districts B', C ', and E' in use.

According to the above configuration, the outdoor unit 10 can know the total number of indoor units installed in the system and the number of refrigerant classifiers installed in the system through the indoor unit number setting unit 12 and the refrigerant classifier unit number setting unit 13.

In addition, the indoor unit 30 may know the actual address for each indoor unit through each indoor unit address setting unit 71.

In addition, each refrigerant classifier 20 has its own refrigerant classifier address setters 23 and 23 ', use air-conditioning branch setters 24 and 24', and indoor unit address setters 25 and 25 '. You can see the setting address of the indoor unit connected to the air conditioning and heating district.

As described above, since the outdoor unit 10, each indoor unit 30, and each refrigerant sorting device 20 are connected by a network 40, the outdoor unit 10 has a total number of indoor units obtained by itself and the number of refrigerant sorting devices. The actual address information of each indoor unit received from each indoor unit 30 together with the information, the presence / absence information of each cooling / heating basin received from each refrigerant classification device 20, the setting address information of the indoor unit matched with each cooling / heating basin, On the basis of the address information of the refrigerant classification device 20, which cooling and heating branch of the refrigerant classification device 20 at which address is in use, and the setting address of the indoor unit matched with the refrigerant classification device can be known. The address setting error between the 20 and the indoor units 30 can be easily detected. That is, the outdoor unit 10 includes the set address information of each indoor unit in which the switching element of the use air-conditioning branch setting unit received from each refrigerant classification device 20 is on, the number of actual address information of the indoor unit transmitted from each indoor unit, and If the address and the number of the set address and the actual address of the indoor unit is all matched, it is determined that there is no address setting error between each refrigerant sorting device 20 and the indoor unit 30, any one match If not, it is determined that there is an address setting error. In addition, when an address setting error occurs, the outdoor unit 10 notifies the installer of the address of the refrigerant classification device in which the address setting error occurs and the cooling and heating district information in which the address setting error occurs, so that the address setting can be made correctly.

Hereinafter, a description will be given of a specific example of detecting an address setting error between the refrigerant classification device and the indoor units.

As illustrated in FIG. 7, when the indoor unit # 5 having the indoor unit setting address of 5 is connected to the cooling / heating branch E of the refrigerant classification device # 0, but in reality, the indoor unit # 1 having the indoor unit setting address of 1 is connected to the air conditioner. Each refrigerant sorting device transmits the address of the refrigerant sorting device and the cooling / heating branch information in use to the outdoor unit 10 together with the setting address of the indoor unit corresponding to each cooling / heating district through the network. Each indoor unit transmits the actual address of the indoor unit actually connected to each refrigerant classification device through the network to the outdoor unit 10. The outdoor unit 10 is a set address (4, 3, 5, 6, 2) of each indoor unit in which the switching element of the cooling and heating basin setting unit received from each refrigerant classification device is turned on and the actual address of the indoor unit received from each indoor unit. The address setting error is determined by comparing the number of (4, 3, 1, 6, 2) with the address. That is, in the above example, the number of setting addresses (5) of the indoor unit and the number of actual addresses (5) of the indoor unit coincide. However, since the indoor address of the indoor unit is 1, the setting address 5 of the indoor unit of the refrigerant classification device # 0 corresponding thereto does not match. Therefore, based on this, the outdoor unit 10 determines that the address setting between the refrigerant classification device # 0 and the indoor unit # 1 is an error, and the address (refrigeration classification device # 0) and the address of the refrigerant classification device where the address setting error has occurred. Inform the installer of the cooling / heating basin E where the configuration error occurred so that the address can be set correctly.

In addition, as shown in FIG. 8, when the indoor unit # 7 having the indoor unit setting address 7 is connected to the cooling / heating branch C 'of the refrigerant classification device # 1, but is not actually connected, the outdoor unit 10 is connected. Is the set address (4, 3, 5, 6, 7, 0) of each indoor unit in which the switching element of the cooling / heating basin setting unit received from each refrigerant classification unit is turned on, and the actual address (4) of the indoor unit received from each indoor unit. , 3, 5, 6, 0) is compared with the number of addresses to determine the address setting error. That is, in the case of the above example, the number of setting addresses of each indoor unit (6) does not coincide with the number of actual addresses of each indoor unit (5), and there is no actual address of the indoor unit corresponding to the setting address 7 of the indoor unit. Therefore, the outdoor unit 10 determines that the address setting between the refrigerant classifier # 1 and the indoor unit # 7 is an error based on this, and the address (the refrigerant classifier # 1) and the address of the refrigerant classifier having the address setting error occurred. Inform the installer of the cooling / heating basin C 'where the setting error has occurred so that the address can be set correctly.

On the other hand, as shown in Figure 9, when the indoor unit # 5 is actually connected to the cooling and heating basin E of the refrigerant classification device # 0, and the switch 5 of the use heating and cooling basin setting section corresponding to the cooling and heating basin E is turned off , The outdoor unit 10 is a set address (4, 3, 6, 7, 0) of each indoor unit in which the switching element of the cooling and heating basin setting unit received from each refrigerant classification device is turned on and the actual indoor unit received from each indoor unit. The address setting error is determined by comparing the number of addresses (4, 3, 5, 6, 7, 0) with the addresses. That is, in the above example, the number of set addresses of each indoor unit (5) does not coincide with the number of actual addresses of each indoor unit (6), and the use corresponds to the set address 5 of the indoor unit corresponding to the actual address 5 of the indoor unit. The switching element 5 of the heating / cooling basin setting unit is turned off. Therefore, the outdoor unit 10 determines that the address setting between the refrigerant classifier # 0 and the indoor unit # 5 is an error based on this, and the address (the refrigerant classifier # 0) and the address of the refrigerant classifier having the address setting error occurred. Inform the installer of the cooling / heating basin E where the configuration error occurred so that the address can be set correctly.

As described in detail above, the present invention is based on the number of the set address of each indoor unit and the actual address information of each indoor unit set in the cooling and heating basin in use received from the refrigerant classification device based on whether the addresses match By checking the address setting error between the indoor unit and the indoor unit, the address setting error between the refrigerant classification device and the indoor unit can be more conveniently inspected, and the address setting error checking time can be greatly reduced.

In addition, in the present invention, when an address setting error occurs, the installer can reduce the trial and error by notifying the installer of the heating / cooling basin information in which the address setting error has occurred, and thus can solve the address setting error more quickly. There is an effect that can be improved.

In addition, the present invention can more accurately detect the address setting error between the refrigerant classification device and the indoor unit, there is an effect that can prevent the system from being damaged due to the address setting error.

Claims (5)

An outdoor unit, a plurality of indoor units connected to the outdoor unit, and a refrigerant classification device installed between the outdoor unit and the plurality of indoor units to classify the refrigerant so that the plurality of indoor units perform simultaneous cooling and heating operation, and the refrigerant classification device; In the air-conditioning simultaneous multi-air conditioner that checks the address setting error between the indoor units, The outdoor unit is connected to the refrigerant classifier and the plurality of indoor units via a network to receive information, and whether the actual address information of each indoor unit provided from the plurality of indoor units matches the setting address information of each indoor unit provided from the refrigerant classification unit. Cooling and heating simultaneous multi-air conditioner, characterized in that for checking the address setting error between the refrigerant classification device and each indoor unit. The apparatus of claim 1, wherein the outdoor unit includes a number matching unit determining whether the actual address information of each indoor unit and the set address information of each indoor unit are matched, the actual address information of each indoor unit, and setting of each indoor unit. An address matching unit determining whether the address information is matched with the address, an outdoor control unit determining an address setting error according to the number matching decision result determined by the number matching decision unit and the address matching decision result determined by the address matching decision unit. Air-conditioning simultaneous multi-air conditioner comprising a. The air conditioner of claim 2, wherein the outdoor unit includes an address setting error warning unit for informing the installer of the address setting error. According to claim 2, wherein the setting address information of each indoor unit includes the heating and cooling basin information set to the indoor unit connected to the indoor unit of the plurality of air-conditioning branches provided to be connected to each of the plurality of indoor units in the refrigerant classification device and the indoor unit address information. Cooling and heating simultaneous multi air conditioner, characterized in that. The air conditioner according to claim 4, wherein the outdoor unit includes a display unit for notifying an installer of cooling / heating basin information in which the address setting error occurs when the address setting error occurs.

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