CN106352489A - Air conditioner fault detecting method and system - Google Patents

Air conditioner fault detecting method and system Download PDF

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Publication number
CN106352489A
CN106352489A CN201610871303.XA CN201610871303A CN106352489A CN 106352489 A CN106352489 A CN 106352489A CN 201610871303 A CN201610871303 A CN 201610871303A CN 106352489 A CN106352489 A CN 106352489A
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CN
China
Prior art keywords
air
conditioning
initial temperature
current temperatures
preset value
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201610871303.XA
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Chinese (zh)
Inventor
冯尚华
张泉宏
崔宗臻
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guangdong Chigo Heating and Ventilation Equipment Co Ltd
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Guangdong Chigo Heating and Ventilation Equipment Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guangdong Chigo Heating and Ventilation Equipment Co Ltd filed Critical Guangdong Chigo Heating and Ventilation Equipment Co Ltd
Priority to CN201610871303.XA priority Critical patent/CN106352489A/en
Publication of CN106352489A publication Critical patent/CN106352489A/en
Pending legal-status Critical Current

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/62Control or safety arrangements characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/30Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F13/00Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
    • F24F13/30Arrangement or mounting of heat-exchangers
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F2110/00Control inputs relating to air properties
    • F24F2110/10Temperature
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F11/00Control or safety arrangements
    • F24F11/50Control or safety arrangements characterised by user interfaces or communication
    • F24F11/56Remote control
    • F24F11/58Remote control using Internet communication

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fuzzy Systems (AREA)
  • Mathematical Physics (AREA)
  • Signal Processing (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Atmospheric Sciences (AREA)
  • Air Conditioning Control Device (AREA)

Abstract

The invention discloses an air conditioner fault detecting method and system. The initial temperature and current temperature of an evaporator coil are obtained through a temperature obtaining device in a heating mode and are compared through a signal processor, whether an air conditioner normally performs heating or not, namely whether a fault occurs during heating or not can be judged by judging whether the difference of the temperatures is greater than a first preset value or not, and further a controller turns off the air conditioner or not through control. In addition, whether the difference of the current temperature and the initial temperature is greater than a second preset value or not is judged through a signal processor, and further whether a four-way valve breaks down or not is judged. Therefore, by the adoption of the detecting method and the detecting system, air conditioner faults can be found in time, and unnecessary loss can be avoided.

Description

A kind of detection method of air-conditioning fault and system
Technical field
The present invention relates to intelligent air condition field, more particularly to a kind of detection method of air-conditioning fault.Additionally, the present invention is also It is related to a kind of detecting system applying above-mentioned detection method.
Background technology
With the increasingly raising of quality of life, air-conditioning has entered into common people house, becomes a kind of conventional household electrical appliance.Empty Adjust generally to be respectively provided with and heat and refrigerating function, the switching wherein heating and freezing generally to be realized by cross valve.
The master control borad of air-conditioning lacks detection to whether some loads really press command job at present, leads to find in time Fault, causes unnecessary loss;Wherein just include the commutation action of cross valve, in air-conditioning heating, if cross valve commutation is lost Effect, or lead to because wiring is bad be not carried out commutation action, cause the machine that heat pump to be executed heated originally actually. at all But run refrigeration, led to evaporator temperature constantly to decline, because anti-cold wind function leads to indoor fan not start always, so Circulate the vaporizer that goes down more and more colder, until the badly damaged compressor that freezes, cause serious financial consequences.
Therefore how to find air-conditioning fault in time, it is to avoid unnecessary loss, be that those skilled in the art need to solve at present Technical problem certainly.
Content of the invention
It is an object of the invention to provide a kind of detection method of air-conditioning fault and system, air-conditioning fault can be found in time, Avoid unnecessary loss.
For solving above-mentioned technical problem, the present invention provides a kind of detection method of air-conditioning fault, comprising:
S1: under heating mode state, obtain the initial temperature of evaporator coil;
S2: after run time t, obtain the Current Temperatures of evaporator coil;
S3: judge whether described Current Temperatures and the difference of described initial temperature are more than the first preset value, if it is not, then closing Air-conditioning.
Preferably, judge whether described Current Temperatures and the difference of described initial temperature are more than the first preset value, if it is not, then Also include:
Prompting air-conditioning fault.
Preferably, also include before closing air-conditioning:
Judge whether described initial temperature and the difference of described Current Temperatures are more than the second preset value, if so, then point out four Port valve fault
Preferably, judge whether described Current Temperatures and the difference of described initial temperature are more than the first preset value, if so, then Return s2.
Preferably, described first preset value is specially 2 DEG C, and described second preset value is specially 5 DEG C.
The present invention also provides a kind of detecting system of air-conditioning fault, comprising:
Temperature acquisition device, under heating mode state, obtaining initial temperature and the Current Temperatures of evaporator coil;
Controller, for controlling air-conditioning to continue to run with or cutting out;
The signal processor being connected with described temperature acquisition device and described controller communication respectively, for will be described initial Temperature and described Current Temperatures are compared process, and send normal signal or shutdown signal to described controller.
Preferably, the prompting apparatuss for pointing out fault message are also included.
The detection method of air-conditioning fault and system that the present invention provides, are obtained by temperature acquisition device and steam under heating mode Send out initial temperature and the Current Temperatures of device coil pipe, and by signal processor, initial temperature and Current Temperatures are compared, sentence Whether whether both differences of breaking are more than the first preset value, you can judge whether air-conditioning normally heats, that is, heat and break down, enter And control whether air-conditioning closes by controller.Therefore the detection method that the present invention provides and detecting system can find sky in time Adjust fault, it is to avoid unnecessary loss.
Brief description
Fig. 1 is a kind of flow chart of specific embodiment of the detection method of air-conditioning fault provided by the present invention;
Fig. 2 is the flow chart of another kind of specific embodiment of the detection method of air-conditioning fault provided by the present invention;
Fig. 3 is a kind of structured flowchart of specific embodiment of the detecting system of air-conditioning fault provided by the present invention.
Specific embodiment
The core of the present invention is to provide a kind of detection method of air-conditioning fault and system, can find air-conditioning fault in time, Avoid unnecessary loss.
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description The present invention is described in further detail.
Refer to Fig. 1, Fig. 1 is a kind of stream of specific embodiment of the detection method of air-conditioning fault provided by the present invention Cheng Tu.
The specific embodiment of the invention provide air-conditioning fault detection method particularly as follows:
S1: under heating mode state, obtain the initial temperature of evaporator coil.
S2: after run time t, obtain the Current Temperatures of evaporator coil.
In the detection method that the specific embodiment of the present invention is provided, time t specifically can according to 1min or 2min, Can also be the other times value more than 0, the application is not restricted to the concrete value of t, as long as within this time, can interpolate that It has whether air-conditioning occurs heating fault, and occurring heating the irreversible damage not resulting in related components under failure condition, All specifically can be adjusted according to practical situation.
Wherein it should be noted that the refrigerating and heating systems of air-conditioning are generally by compressor, condenser, vaporizer and cross valve Deng assembly composition, when air-conditioning enters heating mode state, if air-conditioning normally heats, the temperature of evaporator coil can gradually rise Height, and carry out heat exchange to improve indoor temperature.
S3: judge whether Current Temperatures and the difference of initial temperature are more than the first preset value, if otherwise closing air-conditioning.
The detection method that the specific embodiment of the invention is provided, by by the Current Temperatures of evaporator coil and initially temperature Degree is compared, and judges whether Current Temperatures and the difference of initial temperature are more than the first preset value, if Current Temperatures and initially temperature The difference of degree is more than the first preset value, then show that the temperature of evaporator coil normally raises, the normal heating operation of air-conditioning, and air-conditioning is no Fault;If Current Temperatures are not more than the first preset value with the difference of initial temperature, show that air-conditioning does not normally heat, event occurs Barrier, now closing air-conditioning, in case causing damage of components, causing economic loss.
Wherein, the first preset value usually normally heats under state, temperature increase in time t for the evaporator coil, Can certainly be more than zero and less than said temperature lift-off value other temperature values;Specifically, according to operation of air conditioner experience, when Between t when being 2min, the first preset value is preferably 2 DEG C, if after 2min, the Current Temperatures of evaporator coil and the difference of its initial temperature Value is more than 2 DEG C, then explanation air-conditioning normally heats, otherwise then explanation air-conditioning does not normally heat, and breaks down, then can close sky Adjust.
The detection method that the specific embodiment of the invention is provided, in above-mentioned steps s3, if judge Current Temperatures with just The difference of beginning temperature is not more than the first preset value, when that is, air-conditioning breaks down, can also include: prompting air-conditioning fault.
When air-conditioning breaks down, point out operation of air conditioner to break down, user can be facilitated to find in time, so that timely examine Repair.The method of prompting air-conditioning fault has multiple, specifically can show air-conditioning fault by display lamp or display etc. it is also possible to logical Cross the voice messages such as alarm, all within protection scope of the present invention.
Refer to Fig. 2, Fig. 2 is another kind of specific embodiment of the detection method of air-conditioning fault provided by the present invention Flow chart.
Air-conditioning has not normally heated multiple situations, and modal have two kinds, and one kind is that cross valve is not carried out commutation action, this To execute the thermally operated air-conditioning of system and actually but run refrigeration, lead to evaporator coil temperature to decline, more and more lower;Another Kind it is that pipe-line system or other parts of air-conditioning break down, air-conditioning does not carry out freezing and do not heated yet, evaporator plate The temperature of pipe does not rise and does not drop or fluctuate in very low range.
On the basis of above-mentioned each specific embodiment, in order to determine whether out air-conditioning abort situation, follow-up to facilitate Maintenance, in above-mentioned steps s3, if judging, Current Temperatures and the difference of initial temperature are not more than the first preset value, are closing air-conditioning Before can also include:
Judge whether the initial temperature of evaporator coil and the difference of Current Temperatures are more than the second preset value, if so, then carry Show cross valve fault.
The difference of the initial temperature of evaporator coil and Current Temperatures is more than the second preset value, then illustrate in heating mode Under, the initial temperature of evaporator coil is significantly greater than its Current Temperatures, and the temperature of evaporator coil does not rise anti-fall, then shows air-conditioning Actually run refrigerating function, cross valve is correctly commutated, and cross valve breaks down, asking do not occur in other parts Topic.Prompting cross valve breaks down, and facilitates user to understand abort situation and reason, convenient follow-up maintenance.
Wherein, the second preset value is usually under normal refrigerating state, temperature reduction in time t for the evaporator coil, Can certainly be more than zero and less than said temperature decreasing value other temperature values;Specifically, according to operation of air conditioner experience, when Between t when being 2min, the second preset value is preferably 5 DEG C, if after 2min, the initial temperature of evaporator coil and the difference of its Current Temperatures Value is more than 5 DEG C, then explanation air-conditioning is being freezed, and cross valve commutation is broken down.
On the basis of above-mentioned specific embodiment, point out the mode of fault message to have multiple, can by display lamp or Display display cross valve fault is it is also possible to pass through the voice messages such as alarm, all within protection scope of the present invention.
The detection method that the specific embodiment of the invention is provided, by the Current Temperatures of evaporator coil and initial temperature After comparing, if Current Temperatures are more than the first preset value with the difference of initial temperature, just showing the temperature of evaporator coil Often raise, the normal heating operation of air-conditioning, air-conditioning fault-free;On the basis of above-mentioned each specific embodiment, in order to prevent air-conditioning Break down after running a period of time under normal heating mode state, air-conditioning can be entered with between-line spacing detection, that is, in above-mentioned step In rapid s3, if judging, Current Temperatures and the difference of initial temperature are more than the first preset value, can be with return to step s2, that is, in the time After t, obtain the Current Temperatures of evaporator coil again, and again the Current Temperatures of evaporator coil and initial temperature are compared Right, form cycle detection it is ensured that air-conditioning fault can be found all the time in time, close air-conditioning in time, reduce unnecessary loss.
In sum, the detection method of the air-conditioning fault that the specific embodiment of the invention is provided, heats mould by obtaining The initial temperature of evaporator coil and Current Temperatures under formula, and its initial temperature and Current Temperatures are compared, judge both Difference whether be more than the first preset value, you can judge whether air-conditioning normally heats, that is, heat and whether break down, and then control Whether air-conditioning closes.The detection method that therefore present invention provides can find air-conditioning fault in time, it is to avoid unnecessary loss.
Refer to Fig. 3, Fig. 3 is a kind of knot of specific embodiment of the detecting system of air-conditioning fault provided by the present invention Structure block diagram.
The specific embodiment of the invention additionally provides detecting system corresponding with above-mentioned detection method, obtains dress including temperature Put, controller and the signal processor being connected with temperature acquisition device and controller communication respectively.
Wherein, temperature acquisition device is used for obtaining the temperature of evaporator coil, specifically can obtain evaporator coil Initial temperature and Current Temperatures, and initial temperature and Current Temperatures are sent to signal processor;
Signal processor is used for receiving initial temperature and the Current Temperatures of the evaporator coil that temperature acquisition device gets, And both compare process, form judged result, and normal signal or shutdown signal are sent to controlling according to judged result Device;Specifically, compare to process and include: judge whether Current Temperatures and the difference of initial temperature are more than the first preset value, if so, then Send normal signal to controller, if it is not, then sending shutdown signal to controller;If judging the difference of Current Temperatures and initial temperature Value is not more than the first preset value, and comparison processes and can also include judging whether initial temperature and the difference of Current Temperatures are more than second Preset value.
Controller is used for controlling air-conditioning to continue to run with or cuts out, and specifically can be used for receipt signal processor and just sends Regular signal or shutdown signal, if receive for normal signal, control air-conditioning to continue to run with, if receive for closing letter Number, then control air-conditioning to close.
The detecting system of the air-conditioning fault that the specific embodiment of the invention provides, can also be included for pointing out fault message Prompting apparatuss, judge that the Current Temperatures of evaporator coil and the difference of initial temperature are not more than the first preset value in signal processor When, when that is, air-conditioning breaks down, prompting apparatuss can be used for pointing out air-conditioning to break down, and to facilitate user to find in time, examines in time Repair.
In addition, the difference judging the Current Temperatures of evaporator coil and initial temperature in signal processor to be not more than first pre- If in the case of value, if signal processor judges that the difference of the initial temperature of evaporator coil and Current Temperatures is more than the simultaneously Two preset values, that is, show that the cross valve of air-conditioning breaks down, then prompting apparatuss can be used for pointing out cross valve to break down, convenient use Family understands abort situation and reason, convenient follow-up maintenance.
Prompting apparatuss are specifically as follows display screen, warning light and alarm etc., and the application is not specifically limited to this, all at this Within the protection domain of invention.
The detection method of air-conditioning fault and detecting system that the present invention provides, obtain heating mode by temperature acquisition device The initial temperature of lower evaporator coil and Current Temperatures, and by signal processor, initial temperature and Current Temperatures are compared Right, judge whether both differences are more than the first preset value, you can judge whether air-conditioning normally heats, that is, heat and whether event occurs Barrier, and then control whether air-conditioning closes by controller.Therefore the detection method that the present invention provides and detecting system can be timely Find air-conditioning fault, it is to avoid unnecessary loss.
Above the detection method and detecting system of air-conditioning fault provided by the present invention is described in detail.Herein Apply specific case the principle of the present invention and embodiment are set forth, the explanation of above example is only intended to help Understand the method for the present invention and its core concept.It should be pointed out that for those skilled in the art, do not taking off On the premise of the principle of the invention, the present invention can also be carried out with some improvement and modify, these improve and modification also falls into this In invention scope of the claims.

Claims (7)

1. a kind of detection method of air-conditioning fault is it is characterised in that include:
S1: under heating mode state, obtain the initial temperature of evaporator coil;
S2: after run time t, obtain the Current Temperatures of evaporator coil;
S3: judge whether described Current Temperatures and the difference of described initial temperature are more than the first preset value, if it is not, then closing empty Adjust.
2. detection method according to claim 1 is it is characterised in that judge described Current Temperatures and described initial temperature Whether difference is more than the first preset value, if it is not, then also including:
Prompting air-conditioning fault.
3. detection method according to claim 1 is it is characterised in that also include before closing air-conditioning:
Judge whether described initial temperature and the difference of described Current Temperatures are more than the second preset value, if so, then point out cross valve Fault.
4. the detection method according to claims 1 to 3 any one is it is characterised in that judge described Current Temperatures and institute Whether the difference stating initial temperature is more than the first preset value, if so, then returns s2.
5. detection method according to claim 4 it is characterised in that described first preset value be specially 2 DEG C, described second Preset value is specially 5 DEG C.
6. a kind of detecting system of air-conditioning fault is it is characterised in that include:
Temperature acquisition device, for obtaining initial temperature and the Current Temperatures of evaporator coil;
Controller, for controlling air-conditioning to continue to run with or cutting out;
The signal processor being connected with described temperature acquisition device and described controller communication respectively, for by described initial temperature Compare process with described Current Temperatures, and send normal signal or shutdown signal to described controller.
7. detecting system according to claim 6 is it is characterised in that also include the prompting apparatuss for pointing out fault message.
CN201610871303.XA 2016-09-29 2016-09-29 Air conditioner fault detecting method and system Pending CN106352489A (en)

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Application Number Priority Date Filing Date Title
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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107576024A (en) * 2017-09-27 2018-01-12 广东美的暖通设备有限公司 Fault detection method, the apparatus and system of multi-online air-conditioning system
CN109269007A (en) * 2018-09-27 2019-01-25 宁波奥克斯电气股份有限公司 A kind of family formula water dispenser control method, control system and air conditioner
CN109990439A (en) * 2019-04-04 2019-07-09 宁波奥克斯电气股份有限公司 A kind of control method, control device and air conditioner that the commutation of air-conditioning four-way valve is abnormal
CN110986268A (en) * 2019-11-12 2020-04-10 青岛海尔空调器有限总公司 Method for detecting and controlling dislocation of expansion valve of multi-split air conditioner under refrigeration working condition
CN111706957A (en) * 2020-05-25 2020-09-25 珠海格力电器股份有限公司 Method and device for detecting reversing abnormality of four-way valve, storage medium and air conditioner
CN112594866A (en) * 2020-12-31 2021-04-02 广东积微科技有限公司 Anti-freezing control system and control method for multi-split hydraulic module
CN113280470A (en) * 2021-06-10 2021-08-20 宁波奥克斯电气股份有限公司 Four-way valve fault detection method and device and air conditioner
CN113587402A (en) * 2021-06-30 2021-11-02 珠海拓芯科技有限公司 Air conditioner control method and air conditioner
CN114383259A (en) * 2021-12-16 2022-04-22 珠海格力电器股份有限公司 Two-way valve fault detection method and air conditioner using same
CN114484726A (en) * 2020-10-23 2022-05-13 广东美的制冷设备有限公司 Reversing abnormity detection method of four-way valve, air conditioner and readable storage medium
CN117490188A (en) * 2023-12-25 2024-02-02 珠海格力电器股份有限公司 Four-way valve fault detection result generation method and device

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CN102141281A (en) * 2010-02-01 2011-08-03 乐金电子(天津)电器有限公司 Hot-start control method of air conditioner

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Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107576024A (en) * 2017-09-27 2018-01-12 广东美的暖通设备有限公司 Fault detection method, the apparatus and system of multi-online air-conditioning system
CN109269007A (en) * 2018-09-27 2019-01-25 宁波奥克斯电气股份有限公司 A kind of family formula water dispenser control method, control system and air conditioner
CN109269007B (en) * 2018-09-27 2020-10-27 宁波奥克斯电气股份有限公司 Control method and control system for household water machine and air conditioner
CN109990439B (en) * 2019-04-04 2021-01-19 宁波奥克斯电气股份有限公司 Control method and control device for abnormal reversing of air conditioner four-way valve and air conditioner
CN109990439A (en) * 2019-04-04 2019-07-09 宁波奥克斯电气股份有限公司 A kind of control method, control device and air conditioner that the commutation of air-conditioning four-way valve is abnormal
CN110986268A (en) * 2019-11-12 2020-04-10 青岛海尔空调器有限总公司 Method for detecting and controlling dislocation of expansion valve of multi-split air conditioner under refrigeration working condition
CN111706957B (en) * 2020-05-25 2021-05-18 珠海格力电器股份有限公司 Method and device for detecting reversing abnormality of four-way valve, storage medium and air conditioner
CN111706957A (en) * 2020-05-25 2020-09-25 珠海格力电器股份有限公司 Method and device for detecting reversing abnormality of four-way valve, storage medium and air conditioner
CN114484726A (en) * 2020-10-23 2022-05-13 广东美的制冷设备有限公司 Reversing abnormity detection method of four-way valve, air conditioner and readable storage medium
CN112594866A (en) * 2020-12-31 2021-04-02 广东积微科技有限公司 Anti-freezing control system and control method for multi-split hydraulic module
CN113280470A (en) * 2021-06-10 2021-08-20 宁波奥克斯电气股份有限公司 Four-way valve fault detection method and device and air conditioner
CN113280470B (en) * 2021-06-10 2022-05-13 宁波奥克斯电气股份有限公司 Four-way valve fault detection method and device and air conditioner
CN113587402A (en) * 2021-06-30 2021-11-02 珠海拓芯科技有限公司 Air conditioner control method and air conditioner
CN114383259A (en) * 2021-12-16 2022-04-22 珠海格力电器股份有限公司 Two-way valve fault detection method and air conditioner using same
CN114383259B (en) * 2021-12-16 2023-05-05 珠海格力电器股份有限公司 Two-way valve fault detection method and air conditioner using same
CN117490188A (en) * 2023-12-25 2024-02-02 珠海格力电器股份有限公司 Four-way valve fault detection result generation method and device
CN117490188B (en) * 2023-12-25 2024-04-05 珠海格力电器股份有限公司 Four-way valve fault detection result generation method and device

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Application publication date: 20170125