JPS59112143A - Self diagnosis system of split type air conditioner - Google Patents

Abstract

PURPOSE:To simply diagnose places where disorder occurs by using a system in which two-stage check modes for the presence of anomaly with respect to the inspection items of indoor and outdoor units and for the presence of anomaly with respect to communication are displayed. CONSTITUTION:When a display content switch 11 is in remote control check mode, the display content is switched by a displayer 7 and displayed, and the display of the input condition of various kinds of switches and also of the anomaly of communication is notified. When the position of actual switch coincides with the position to be displayed, there is no anomaly. When signal sent from the remote control unit is received through a receiving circuit, whether signal sent is matched with signal received is checked, and they are disaccorded, and when the condition occurs several times continuously, the communication is regarded as anomaly even when transmission is made over again.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a self-diagnosis method for easily displaying abnormalities in a separate air conditioner having a remote control unit, an indoor unit, and an outdoor unit.

Conventionally, in separate air conditioners where each unit has its own control board, when a failure or abnormality occurs, the service procedure to identify the abnormality becomes complicated, and as a result, the time required for service becomes longer. , There were also many unnecessary boards.

An object of the present invention is to eliminate the complexity of the service procedure described above and simplify it by adding a self-diagnosis function to a separate air conditioner having a plurality of control boards.

Below, five embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is an overall configuration diagram of an embodiment of a remote control unit/control tower separated type air conditioner having two display devices.

In this embodiment, (1) is a remote control unit), (21 is an indoor unit), and (31 is an outdoor unit), each having control boards (4), (5), and (6). (7) is a display (8) (9) (11 is the switch, αυ is the display changeover switch, the unit is the suction temperature detection element, and the 0th floor is the heat exchanger.

α4 is a pipe temperature detection element, α9 is a compressor, (1f9 is a protection device, αη is an outdoor pipe temperature detection element, and the operation of each unit regarding self-diagnosis will be explained with reference to FIG. 1.

In the outdoor unit (3), there is an inspection section to check whether there is any abnormality in the pipe temperature detection element aη, and in the protection device detection section 4.

The protection device αQ of the compressor aS is inspected, other predetermined inspection items are inspected, and these data are transmitted to the remote control unit (x) as shown in transmission processing 1'A. Similarly, for the indoor unit (2), check the piping temperature detection element α4 at+ and the suction temperature detection element 0.
2 Inspection■ and other specified inspection items are carried out, and the results are transmitted to the remote control unit l- at 2 East.These inspection data are sent to the 2nd
As shown in signal C3S in the figure, it is sent in series with an address signal (2) indicating the direction of transmission (2) and a signal (2) indicating normal air conditioning information, etc. In the remote control unit (1), the indoor unit (2) ) and outdoor unit (3
) is received as shown in the reception process (to) in Figure 1 and stored as 2-inspection data creation (g). In addition, in the remote control unit (1), each switch (8) (91
Store the position of 01 as data for self-diagnosis,
Inspect the transmission/reception circuit @ of the remote control unit (1) and store it as data creation for remote control check. These stored data can be changed to display data GQ by setting the 2 display content changeover switches aυ to "remote control check" or "inspection" as indicated by the display changeover switch operation device.
GI) and 2 display C33 indicates the display device (force).

The above is the overall operation, but secondly, Figures 3, 4, and 5
The processing procedure and display method of the remote control unit will be explained according to FIGS. Figure 3 is 2
3 is a schematic flowchart showing the control operation of the remote control unit that plays the role of a check monitor in this embodiment. First, in step (7) it is determined whether it is in the receiving state, and when it is in the receiving state, it is determined whether it is in the transmitting state in step (perform the receiving process shown in step 3. If it is not in the receiving state, step 3?) do. If it is in the transmission state, execute the transmission process in step (4?), and if it is not in the transmission state, proceed to step (to) to collect the air conditioning information sent from the indoor unit and outdoor unit and each switch of the remote control unit. The input etc. are processed, the operating state is determined, and the process proceeds to step 131. In step) 3!1, it is determined whether the display contents changeover switch (11) in the schematic diagram of the remote control unit shown in Fig. 4 is in the check mode or in the normal operation mode. Step (41) Displays the set temperature, detected room temperature, etc. on the display section (7) shown in FIG. 4, and proceeds to Step I.

In step (2), the status of the various remote control units is imported, and if there is a change in step 14!9, the transmission flag is set to "1" in step (4) and set to the transmission state.

When the display contents changeover switch aυ in Fig. 4 is in the check mode, step C4 to step +41
Go to 1.

In this embodiment, there are two check modes for self-diagnosis: ``Remote control check'' and ``Inspection.''
Check the remote control unit used as a check monitor for any abnormalities using "Remote control check".
The system is designed to display whether or not there are any abnormalities in the inspection items of the indoor unit and outdoor unit in the ``inspection'' section. When the display content changeover switch αυ in FIG. 4 is set to "remote control check", the process advances from step (41) to step +42 in FIG. 3, and the display content is changed in step 142. The display is shown in Figure 4, which is composed of multiple light emitting diodes that display the set temperature K during normal operation and the detected indoor temperature. The meaning of the lighting changes.In order to make this meaning easier to understand, we have created a check sheet as shown in Figure 5.As shown in this check sheet, the contents of the "remote control check" are as follows.

Displays the input status of various switches and displays abnormalities in transmission and reception. The former method memorizes the position of each switch, as shown in switch input check (c) in Figure 1, and lights up the light emitting diode corresponding to that position.
If the actual switch position and the displayed position match, there is no abnormality. In the latter case, the signal transmitted by the remote control unit is received through the receiving circuit, and it is constantly checked whether the transmitted signal and the received signal match. If they do not match, the transmission is restarted from the beginning.

If this condition occurs several times in a row, it is considered a transmission/reception error. A display example of the remote control check is shown in FIG. 6(a). In this example, the position of switch A (8) in Figure 4 is "1".
” indicates that the switch B (9) is in the “1” position and the switch O (1 (O) is in the “ON” position, indicating that there is no abnormality in transmission and reception.

When the public response changeover switch I in Fig. 4 is set to the "inspection" position, the meaning of the display (7) will change to the meaning shown in "inspection" in Fig. 5, and from step Cυ in Fig. 3. Step 03
Proceed to. The display content in step C43 is to process the inspection data part of the data sent from the indoor unit and the outdoor unit in the form shown in FIG. 2, and to display whether or not there is an abnormality in each inspection item. In this embodiment, the light emitting diodes corresponding to the inspection items that are abnormal are blinked. Also, if there is an abnormality in transmission/reception between the indoor unit or the outdoor unit, it will blink if transmission/reception is not possible with the remote control unit. FIG. 6tb) shows an example of the display in the "inspection" mode. In this example, inspection item 5 of the indoor unit indicates that there is an abnormality.

By being able to display the two-step check mode as described above, it is possible to easily know where an abnormality has occurred.

The present invention executes control using a plurality of control boards.
Application is also possible to a control system having a display device. By switching the display contents of the remote control unit using this model number, it is possible to easily determine whether or not there is an abnormality at the inspection point of each unit, and it is possible to reduce unnecessary board replacement, which was common in the past.

Additionally, the installation can be used as a monitor to confirm operation during operation, improving serviceability.

[Brief explanation of the drawing]

Fig. 1 is an overall configuration diagram of an embodiment of a control system for a separate air conditioner according to the present invention, Fig. 2 is a schematic diagram of transmission signals from the indoor unit and outdoor unit to the remote control unit, and Fig. 3 is a remote control Flowchart showing the operation of the unit, Figure 4 is a schematic diagram of the operation surface of the remote control unit, Figure 5 is a check sheet to make it easier to understand the display contents when displaying self-diagnosis, Figure 6 (1) is when checking the remote control An example of displaying (
b) shows an example of a display during inspection. Note that the same symbols in the two figures indicate the same parts, (1) is the remote control unit l-, (2) is the indoor unit, (
3) is the outdoor unit, (4) (5) (6) is the control board, (7) is the display section, (8) (9) (l
[) is a switch, Qυ is a display changeover switch, and α is a suction temperature detection element. Agent Makoto Kuzuno - Figure 4 Figure 5 Figure 6 Riushi Kongche Sogae (Q) Tensa (b)

Claims (2)

[Claims] (1)! It has a J-Mote control unit, an indoor unit, and an outdoor unit, and each of the five units is connected by a dedicated signal line, a DC power line, or a power power line, and a control signal between each of the units,
In a separate type air conditioner with a control method that adds an address indicating the transmission direction to air conditioning information, etc., and injects or superimposes it on the line and transmits it in series, the unit that serves as a check monitor among the three units mentioned above. Decide,
By adding a signal indicating the presence or absence of an abnormality at the valley inspection point to the above serial signal sent from the other two units to the check monitor unit, the check monitor unit can always monitor the inspection status of the other two units. Understand 2. During normal operation, the display device that displays temperature, etc., has a mode that checks for abnormalities in the unit that serves as a check monitor, and checks for abnormalities in each inspection item of the other two units. A self-diagnosis method for a separate air conditioner characterized by displaying a mode by switching between two display contents. (2) A patent characterized in that in the self-diagnosis method described above, a check sheet is provided that makes it easier to understand the meaning of the display when changing the display contents of the 9 display section. A self-diagnosis method for a separate air conditioner according to claim 1.