JP4753630B2 - Device error indication method - Google Patents

Description

  The present invention relates to an abnormality display method for devices such as heating devices, air conditioning devices, and water heaters.

The heating device disclosed in Patent Document 1 includes a heating load such as a hot water air conditioner or a hot water floor mat that heats hot water of a heat source device having a circulation pump that is circulated and supplied via a thermal valve. The control board provided in the heat source unit is provided with a control device, an operation indicator lamp, a combustion indicator lamp, a 7-segment digital indicator, and the like. In addition to displaying the error, when an abnormality occurs in the heat source machine, an error display or the like can also be displayed.
JP 2002-162051 A

  By the way, since the device displays two-digit temperature information such as set temperature and room temperature, in the case of a device in which only a two-digit digital display is mounted as a digital display, a two-digit representing the content of the abnormality is displayed. Although it is possible to display an abnormality code, it is impossible to clearly display in what order the abnormality of what content has occurred in the order from the latest. In addition to the above-described two-digit digital display, providing a display for exclusive use of abnormality display increases the cost.

  The present invention has been made in view of the above circumstances, and clearly displays the display of a plurality of types of abnormal states and the order of occurrence of the abnormalities in order from the latest one using a two-digit digital display unit. The purpose is to provide an abnormality display method for equipment that can be used.

The invention according to claim 1 includes an outdoor unit in which components of a heat pump refrigeration cycle including an outdoor heat exchanger are incorporated, and an outdoor fan that ventilates the outdoor heat exchanger is incorporated, and the outdoor unit A hot water unit connected to the hot water unit by a refrigerant pipe, a plurality of floor heating panels connected to the hot water unit via the hot water pipe, a main remote controller connected to a control board of the hot water unit, and each floor heating panel A floor heating remote controller corresponding to the above, a storage unit for storing abnormality display related data including an abnormality code corresponding to a plurality of types of abnormal states occurring in the device and a rank code corresponding to the order in which the abnormality occurred, the main remote controller, A control device for driving and controlling the outdoor unit and the hot water unit based on an input of a floor heating remote controller, In a device provided with a temperature setting knob for setting a constant temperature, an operation switch operated when floor heating of the floor heating panel is performed, and a two-digit digital display unit for displaying information such as temperature information The hot water unit includes a switch previously set as an abnormality display switch, and the control device uses the two-digit digital display unit by operating the abnormality display switch provided in the hot water unit. The abnormality display related data stored in the storage unit in the order in which the situation occurred is displayed retroactively from the latest data, and the rank code and the abnormality code are alternately displayed.

  According to the abnormality display method for equipment according to the present invention, a two-digit digital display unit can be used to clearly display the display of a plurality of types of abnormality states and the order of occurrence of the abnormality in order from the latest one.・ Easy and clear identification of abnormal parts during inspection, and usually using a low-cost two-digit digital display that displays other information such as temperature information, It is possible to display both of the ranking information in which the occurrence of the error occurred.

  Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 3. FIG. 1 is a schematic configuration diagram of an entire heat pump type air conditioner as a device.

  In FIG. 1, a heat pump type air conditioner H includes a heat pump type outdoor unit 1, an indoor unit 4 connected to the outdoor unit 1 by refrigerant pipes 2 and 3, and the indoor unit 4 in parallel with the outdoor unit. 1 is provided with a hot water unit 7 connected by refrigerant pipes 5 and 6, and a plurality of floor heating panels 8 to 10 are connected to the hot water unit 7 by hot water pipes 11 and 12.

  The outdoor unit 1 incorporates components (not shown) of a heat pump refrigeration cycle such as a compressor, a four-way switching valve, an outdoor heat exchanger, a decompression device, and the like. A ventilating outdoor fan (not shown) is incorporated. An HFC refrigerant is used as the refrigerant of the refrigeration cycle.

  The indoor unit 4 includes a built-in indoor heat exchanger and an indoor blower (both not shown) through which the refrigerant from the outdoor unit 1 is circulated and supplied. The indoor air that is installed in the room and taken in by the indoor fan is heat-exchanged by the indoor heat exchanger to be conditioned air, and the conditioned air is discharged into the room to cool or heat by cold air or hot air.

  The hot water unit 7 includes an expansion tank 14 with a water level sensor 13, a circulation pump 15, and a refrigerant-to-water heat exchanger 16. The refrigerant-to-water heat exchanger 16 is connected to the outdoor unit 1 through a refrigerant side. The coil 16A and the hot water side coil 16B integrated with the refrigerant side coil 16A in a heat exchange relationship.

  Reference numeral 17 denotes a forward header that branches the warm water circulation path on the outward side into a plurality, 18 to 20 a flow rate adjusting valve that is a thermal valve provided for each branch path of the forward header 17, and 21 is a return header. The return header 21, the expansion tank 14, the circulation pump 15, the hot water side coil 16 </ b> B of the refrigerant-to-water heat exchanger 16, and the forward header 17 are connected in this order by the internal pipes 22 </ b> A and 22 </ b> B, thereby A hot water heating circuit X for circulatingly supplying the circulating water for heating (hot water) heated by the side coil 16B to the floor heating panels 8 to 10 is formed. Reference numeral 23 denotes a bypass conduit.

  24 is a forward temperature detector that detects the forward temperature of the circulating water for heating heated by the hot water side coil 16B of the refrigerant-to-water heat exchanger 16, and 25 is a return temperature that detects the return side temperature of the circulating water for heating. A detector 26 is a refrigerant temperature detector that detects the temperature of the refrigerant flowing in the refrigerant side coil 16A, and a thermistor is used for each of them.

  Reference numeral 27 denotes a main remote controller installed in a kitchen or the like. The main remote controller 27 is provided with a temperature setting knob 28 for setting the control temperature of the circulating water for heating on the outgoing side, an operation switch 29, an operation lamp 30, and the like. A seven-segment two-digit digital display unit 31 is provided.

  Reference numerals 32 to 34 denote floor heating remote controllers installed in rooms for floor heating corresponding to the floor heating panels 8 to 10. These floor heating remote controllers 32 to 34 include operation switches 32A to 34A and room temperature sensors (see FIG. Etc.) are provided.

  Further, as shown in FIG. 1, a control board K is provided inside the hot water unit 7, and a microcomputer (hereinafter referred to as a microcomputer) 35 as a control device is provided on the control board K to perform a water filling operation. Are provided with a water filling switch 36, an emergency operation switch 37, a valve opening switch 38 for opening all the flow rate adjusting valves 18-20, and the circuit board terminal (not shown) has the circulation pump 15 and the flow rate adjusting valves 18-20. The temperature detectors 24 to 26, the main remote controller 27, the floor heating remote controllers 32 to 34, the water level sensor 13 and the like are electrically connected.

  FIG. 2 is a block diagram of the control device. As shown in FIG. 2, the microcomputer 35 includes a CPU, RAM, ROM, etc., and the above-described floor heating remote controllers 32 to 34, temperature detectors 24 to 26, water filling switch 36, emergency operation, and the like. Signals from the switch 37, the valve opening switch 38, and the water level sensor 13 are input, and control signals are output to the outdoor unit 1, the circulation pump 15, the flow rate adjusting valves 18 to 20, the main remote controller 27, and the like. Further, when an abnormality occurs in the microcomputer 35, a code indicating the content of the abnormality, that is, an abnormal code (for example, A1, A2, A3, A4...) And a code indicating the order, that is, An EEPROM 39 as an electrically erasable storage device (storage unit) that stores up to 10 rank codes (for example, 00, 01, 02, 03...) Is connected.

  First, when floor heating is performed by the floor heating panel 8, when the operation switch 29 of the main remote controller 27 is first operated, the operation lamp 30 is turned on. The operation signal is inputted to the microcomputer 35 on the control board K of the hot water unit 7, and the water presence signal from the water level sensor 13 for detecting the presence or absence of the circulating water for heating in the expansion tank 14 is inputted to the microcomputer 35. Then, the microcomputer 35 operates the circulation pump 15 to circulate the circulating water for heating, and instructs the outdoor unit 1 to supply a heating operation signal to start the heating operation.

  Then, when the outdoor unit 1 starts the heating operation, the compressor of the outdoor unit 1 is operated, and the high-temperature and high-pressure gas refrigerant is supplied to the refrigerant-side coil 16A of the refrigerant-to-water heat exchanger 16, and the hot water side The circulating water for heating flowing through the coil 16B is heated to about 50 to 60 ° C. and the circulating pump 15 of the hot water unit 7 is operated.

  At this time, the microcomputer 35 performs inverter control of the compressor, for example, so that the temperature of the circulating water for heating detected by the outgoing temperature detector 24 becomes the set temperature set by the temperature setting knob 28 of the main remote controller 27. Thus, the amount of heating in the refrigerant-to-water heat exchanger 16 is controlled, and hot water whose temperature is appropriately adjusted circulates in the circulation path through the bypass pipe line 23 by the operation of the circulation pump 15.

  After the operation switch 29 of the main remote control 27 is turned on, for example, when the operation switch 32A of the floor heating remote control 32 is turned on, the corresponding flow rate adjustment valve 18 is opened and heated circulating water (warm water) for heating. Is supplied from the hot water unit 7 to the floor heating panel 8, and the floor heating of the room in which the floor heating panel 8 is laid is performed.

  Thereafter, in the floor heating remote controller 32 described above, a built-in room temperature sensor (not shown) detects a rise in room temperature. If the temperature deviation (room temperature-set temperature) exceeds -1.15 ° C. (deg), the microcomputer The analog output voltage output to 35 is changed in the range of 20V (volt) to 9V. Then, the microcomputer 35 duty-controls the opening time by energization of the flow rate adjusting valve 18 according to the analog voltage value output from the floor heating remote controller 32, and sets the opening time of the flow rate adjusting valve 18 every 20 minutes for 20 minutes ( The temperature of the room is maintained at a set desired temperature by intermittently turning on and off the supply of hot water to the floor heating panel 8.

  In addition, the floor heating operation of the floor heating panels 9 and 10 of different systems is also performed by the same operation control as that of the floor heating panel 8 described above.

  During the heating operation by the hot water unit 7, the refrigerant is supplied from the outdoor unit 1 to the indoor unit 4 through the refrigerant pipes 2 and 3 by an operation start operation of a dedicated remote controller (not shown) of the indoor unit 4. In the indoor unit 4, the indoor unit heat exchanger and the indoor air taken into the unit are heat-exchanged to form hot air, and the indoor unit 4 that discharges the hot air into the room can also be heated. The cooling operation of the indoor unit 4 is not possible. Further, during the cooling operation of the indoor unit 4, the floor heating / heating operation by the hot water unit 7 is disabled.

  Further, even if the user changes the hot water temperature by the main remote controller 27, each floor heating panel is changed according to a deviation (room temperature-set temperature) signal output from the floor heating remote controllers 32 to 34 installed in each room. Each room is maintained at the room temperature set by the user by variably controlling the energization opening time of the flow rate adjusting valves 18 to 20 for supplying the circulating water for heating (hot water) to 8 to 10.

  In addition, when an abnormality occurs in an apparatus part related to the hot water unit 7, and the flow rate adjusting valves 18 to 20 are closed due to the abnormality and the floor heating operation by the floor heating panels 8 to 10 is stopped, the service man performs an emergency operation. When the switch 37 is pressed, the outdoor unit 1 and the circulation pump 15 start operation, and at the same time, the heat flow control valves 18 to 20 are opened to start the floor heating operation. Therefore, even when an abnormality occurs and the floor heating operation by the floor heating panels 8 to 10 is abnormally stopped, an emergency floor heating operation can be performed.

  Hereinafter, a method of displaying an abnormality when an abnormality has occurred in the device portion related to the hot water unit 7 will be described in detail with reference to FIG.

  First, when the service person presses the water filling switch 36 set in advance as an error display switch for 3 seconds or more continuously, the microcomputer 35 determines that the water filling switch 36 as an error display switch has been pressed continuously for 3 seconds or more. For example, the display of the two-digit digital display unit 31 of the main remote controller 27 in a state where “60” of the set temperature set to 60 ° C. is displayed, as shown in FIG. 00 ”is displayed. Then, when the display state of “00” has passed 5 seconds, the 2-digit digital display unit 31 is in a state where the display is erased for 3 seconds, and then the latest abnormal state content is, for example, If the abnormality is caused by the failure of the return-side temperature detector 25, as shown in FIG. 3B, the abnormality code “A1” is lit or blinked and displayed for about 5 to 10 seconds. .

  Here, in the EEPROM 39 as the storage device (storage unit), when a plurality of abnormal codes indicating a plurality of abnormal states and their rank codes are stored in order from the latest one, the two-digit digital display unit 31 When the display state of the abnormal code “A1” for about 5 to 10 seconds elapses, the display is turned off.

  Then, after about 3 to 5 seconds have passed in this unlit state, as shown in (c) and (2) of FIG. 3, the two-digit digital display unit 31 displays in the order of “01” → “A2”, Furthermore, “02” → “A6” → “03” → “A4” → “04” → “Ad” → “00” is displayed, and the abnormality code and the rank code are updated with the turn-off time between them. The images are displayed in order from the one in turn and alternately for a predetermined time.

  Next, when erasing the data related to the abnormal display including the rank code and the abnormal code stored in the EEPROM 39 as the storage device (storage unit), the emergency operation switch 37 set in advance as the erasure switch is set for about 10 seconds. When continuously pressed, the microcomputer 35 erases the data related to the abnormal display of the rank code and the abnormal code from the EEPROM 39.

  That is, the rank code and the abnormality code are displayed on the two-digit digital display unit 31 with a predetermined time (about 3 to 5 seconds).

  The rank code and the abnormality code are displayed on the two-digit digital display unit 31 for a predetermined time (about 5 to 10 seconds).

  The rank code and the abnormality code are displayed on the two-digit digital display unit 31 by continuously pressing the water filling switch 36, which is determined in advance as an error display switch, for 3 seconds or more.

  Further, the data related to the abnormal display of the rank code and the abnormal code stored in the EEPROM 39 as the storage device (storage unit) is all when the emergency operation switch 37 predetermined as the erasure switch is continuously pressed for about 10 seconds. Erased.

  In the abnormality display method according to the above embodiment, a storage device (storage unit) that stores abnormality display-related data including abnormality codes corresponding to a plurality of types of abnormality states occurring in the hot water unit 7 and rank codes corresponding to the ranks where the abnormality codes occurred. ) And a digital display unit for displaying arbitrary information such as a set temperature, and abnormal codes (for example, A1, A2, A3, A4...) Stored in the EEPROM 39, and In this display method, a rank code (eg, 00, 01, 02, 03...) Indicating the rank is displayed on the digital display unit. Then, using the two-digit digital display unit 31 as the digital display unit, the abnormal display related data stored in the EEPROM 39 is displayed in order from the latest data in the order in which the abnormal state occurred, and the rank code and the abnormal code are alternately displayed. Since the two-digit digital display unit 31 can be used to display the display of multiple types of abnormal conditions and the order of occurrence of the abnormalities in order from the latest one, it is repaired.・ Easy and clear identification of abnormal parts during inspection, and usually using a low-cost two-digit digital display that displays other information such as temperature information, It is possible to display both of the rank information in which the occurrence of the error occurred.

  Although the embodiments of the present invention have been described above, various alternatives, modifications, and variations can be made by those skilled in the art based on the above description, and the various alternatives described above are within the scope of the present invention. , Including modifications or variations.

It is a schematic block diagram of the whole heat pump type air conditioning apparatus as an apparatus concerning the abnormality display method of the apparatus of this invention. It is a block diagram of a control apparatus. It is explanatory drawing explaining a display state.

Explanation of symbols

7 Hot Water Unit 27 Main Remote Control 31 2-digit Digital Display 35 Microcomputer 36 Water Filling Switch 37 Emergency Operation Switch 39 EEPROM (Storage Unit)

Claims (1)

An outdoor unit in which components of a heat pump refrigeration cycle including an outdoor heat exchanger are incorporated, an outdoor fan for passing through the outdoor heat exchanger, and a hot water unit connected to the outdoor unit by a refrigerant pipe A plurality of systems of floor heating panels connected to the hot water unit via hot water piping, a main remote controller connected to the control board of the hot water unit, a floor heating remote controller corresponding to each floor heating panel, and equipment A storage unit that stores abnormality display-related data including an abnormality code corresponding to a plurality of types of abnormal states occurring in the system and a rank code corresponding to the order in which the abnormality occurred, and the outdoor based on inputs from the main remote controller and the floor heating remote controller A control unit for driving and controlling the unit and the hot water unit, the main remote controller for setting a set temperature A degree setting knob, the operation switch operated when performing floor heating of the floor heating panel, in a device in which the two-digit digital display for displaying information such as temperature information is provided,
The hot water unit includes a switch previously determined as an abnormality display switch,
The control device uses the two-digit digital display unit by operating an abnormality display switch provided in the hot water unit, and displays the abnormality display related data stored in the storage unit in the order in which the abnormal state occurs. And displaying the order code and the error code alternately, and displaying the abnormality code of the device.

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