Fault-tolerant operation control method and device, air conditioner and computer readable storage medium

Abstract

The embodiment of the invention provides a fault-tolerant operation control method and device, an air conditioner and a computer readable storage medium. The fault-tolerant operation control method comprises the steps that whether an indoor temperature sensor and an indoor coil pipe temperature sensor break down or not is determined; in response to the fact that the indoor temperature sensor breaks down and the indoor coil pipe temperature sensor does not break down, the air conditioner is controlled to enter first fault-tolerant operation, so that the indoor environment temperature is determined according to the indoor coil pipe temperature, and the air conditioner is controlled to operate according to the indoor environment temperature; after the air conditioner enters the first fault-tolerant operation to the first operation time, whether the air conditioner has a high-load risk or not is determined; and in response to the fact that the air conditioner has the high load risk, operation parameters of the air conditioner are adjusted to reduce the operation load of the air conditioner, and the operation parameters comprise at least one of the compressor frequency, the indoor fan rotating speed and the outdoor fan rotating speed.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and in particular to a fault-tolerant operation control method and device, an air conditioner, and a computer-readable storage medium. Background Art

[0002] In related technologies, some air conditioners can switch to a fault-tolerant mode when an indoor temperature sensor fails, thereby meeting the user's basic needs in the event of a fault. However, the operational reliability of such air conditioners in fault-tolerant mode is low, which can easily lead to significant operational risks. Summary of the Invention

[0003] The embodiments of the present application provide a fault-tolerant operation control method, device, air conditioner and computer-readable storage medium, which can reduce the operating risk of the air conditioner during the fault-tolerant operation process and effectively improve the operating reliability of the air conditioner.

[0004] In a first aspect, an embodiment of the present application provides a fault-tolerant operation control method, comprising: determining whether an indoor temperature sensor and an indoor coil temperature sensor are faulty; in response to determining that the indoor temperature sensor is faulty and the indoor coil temperature sensor is not faulty, controlling the air conditioner to enter a first fault-tolerant operation to determine the indoor ambient temperature based on the indoor coil temperature, and controlling the operation of the air conditioner based on the indoor ambient temperature; after the air conditioner enters the first fault-tolerant operation for a first operating time, determining whether the air conditioner is at a high load risk; in response to determining that the air conditioner is at a high load risk, adjusting the operating parameters of the air conditioner to reduce the operating load of the air conditioner, the operating parameters including at least one of the compressor frequency, the indoor fan speed, and the outdoor fan speed.

[0005] In some embodiments, in response to the air conditioner being in a refrigeration cycle, adjusting the operating parameters of the air conditioner to reduce the operating load of the air conditioner includes: determining whether the speed of the outdoor fan is greater than or equal to the outdoor unit speed threshold; in response to determining that the speed of the outdoor fan is greater than or equal to the outdoor unit speed threshold, controlling the compressor to reduce the frequency, controlling the compressor to stop after the compressor reduces the frequency to the frequency threshold, and controlling the compressor to restart after a preset shutdown time; in response to determining that the speed of the outdoor fan is less than the outdoor unit speed threshold, controlling the outdoor fan to increase the speed.

[0006] In some embodiments, in response to determining that the air conditioner is in a heating cycle, adjusting the operating parameters of the air conditioner to reduce the operating load of the air conditioner includes: determining whether the speed of the indoor fan is greater than or equal to the indoor unit speed threshold; in response to determining that the speed of the indoor fan is greater than or equal to the indoor unit speed threshold, controlling the compressor to reduce the frequency, controlling the compressor to stop after the compressor reduces the frequency to the frequency threshold, and controlling the compressor to restart after a preset shutdown time; in response to determining that the speed of the indoor fan is less than the indoor unit speed threshold, controlling the indoor fan to increase the speed.

[0007] In some embodiments, controlling the compressor to restart after a preset downtime includes: determining the current indoor ambient temperature based on the indoor coil temperature at the end of the preset downtime and a preset correction value; and controlling the compressor to restart based on the indoor ambient temperature.

[0008] In some embodiments, in response to the air conditioner being in a refrigeration cycle, determining whether the air conditioner is at high load risk includes: determining whether the outdoor coil temperature is greater than or equal to an external pipe temperature threshold; in response to determining that the outdoor coil temperature is greater than or equal to the external pipe temperature threshold, determining that the air conditioner is at high load risk; in response to determining that the outdoor coil temperature is less than the external pipe temperature threshold, determining that the air conditioner is not at high load risk.

[0009] In some embodiments, in response to determining that the air conditioner is in a heating cycle, determining whether the air conditioner is at high load risk includes: determining whether the indoor coil temperature is greater than or equal to an inner pipe temperature threshold; in response to determining that the indoor coil temperature is greater than or equal to the inner pipe temperature threshold, determining that the air conditioner is at high load risk; in response to determining that the indoor coil temperature is less than the inner pipe temperature threshold, determining that the air conditioner is not at high load risk.

[0010] In some embodiments, controlling an air conditioner to enter a first fault-tolerant operation includes: in response to the air conditioner being in a shutdown state when an indoor temperature sensor fails, controlling the air conditioner to start running with a first preset temperature as the indoor ambient temperature, and obtaining the indoor coil temperature at the startup time, the first preset temperature being greater than the indoor coil temperature at the startup time; after the air conditioner starts running for a second running time, determining the indoor ambient temperature at the current moment based on the indoor coil temperature at the current moment, the indoor coil temperature at the startup moment, and the indoor coil temperature at the end of the second running time, and controlling the air conditioner to run according to the indoor ambient temperature, the first running time being longer than the second running time; in response to the air conditioner being in a powered-on state when an indoor temperature sensor fails, determining the indoor ambient temperature at the current moment based on the indoor coil temperature at the current moment, the indoor coil temperature at the time when the air conditioner enters the fault-tolerant operation, and the indoor coil temperature from the time when the air conditioner enters the first fault-tolerant operation to the end of the second running time, and controlling the air conditioner to run according to the indoor ambient temperature.

[0011] In some embodiments, determining whether the indoor temperature sensor is faulty includes: determining whether the measurement value of the indoor temperature sensor is within a normal measurement value range; in response to determining that the measurement value of the indoor temperature sensor is within the normal measurement value range, determining that the indoor temperature sensor is not faulty; in response to determining that the measurement value of the indoor temperature sensor is outside the normal measurement value range, determining that the indoor temperature sensor is faulty.

[0012] In some embodiments, the fault-tolerant operation control method further includes: when the air conditioner enters the first fault-tolerant operation to the third operation time, determining whether the indoor temperature sensor has eliminated the fault; in response to determining that the indoor temperature sensor has not eliminated the fault, controlling the air conditioner to shut down.

[0013] In some embodiments, the fault-tolerant operation control method further includes: determining whether the indoor temperature sensor and the indoor coil temperature sensor are faulty; in response to determining that the indoor coil temperature sensor is faulty and the indoor temperature sensor is not faulty, controlling the air conditioner to enter a second fault-tolerant operation to determine the indoor coil temperature according to the indoor ambient temperature, and controlling the air conditioner operation according to the indoor coil temperature.

[0014] In a second aspect, an embodiment of the present application provides a fault-tolerant operation control device, comprising: a fault judgment circuit, configured to determine whether an indoor temperature sensor and an indoor coil temperature sensor have faults; a fault-tolerant operation circuit, configured to control the air conditioner to enter a first fault-tolerant operation in response to determining that the indoor temperature sensor has faulted and the indoor coil temperature sensor has not faulted, so as to determine the indoor ambient temperature based on the indoor coil temperature, and control the operation of the air conditioner based on the indoor ambient temperature; a load risk judgment circuit, configured to determine whether the air conditioner has a high load risk after the air conditioner enters the first fault-tolerant operation for a first operating time; a load reduction control circuit, configured to adjust the operating parameters of the air conditioner to reduce the operating load of the air conditioner in response to determining that the air conditioner has a high load risk, the operating parameters including at least one of the compressor frequency, the indoor fan speed and the outdoor fan speed.

[0015] In a third aspect, an embodiment of the present application provides an air conditioner, comprising: a memory storing a computer program; and a processor, wherein when the computer program is executed by the processor, the fault-tolerant operation control method as described in any of the above embodiments is implemented.

[0016] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium on which a computer program is stored. The computer program is loaded by a processor to execute the steps in the fault-tolerant operation control method described above.

[0017] The fault-tolerant operation control method provided in the embodiment of the present application first determines whether the indoor temperature sensor and the indoor coil temperature sensor are faulty, and when it is determined that the indoor temperature sensor is faulty and the indoor coil temperature sensor is not faulty, controls the air conditioner to enter the first fault-tolerant operation, so as to determine the indoor ambient temperature according to the indoor coil temperature, and control the operation of the air conditioner according to the indoor ambient temperature, and then further determines whether the air conditioner has a high load risk after the first fault-tolerant operation reaches the first operation time, and when it is determined that the air conditioner has a high load risk, adjusts the operating parameters of the air conditioner to reduce the operating load of the air conditioner; in this way, the air conditioner can operate in a fault-tolerant manner when the indoor temperature sensor fails, and eliminates or at least greatly reduces the safety operation risk of the air conditioner in the first fault-tolerant operation, so that the air conditioner can reliably meet the functional needs of the user in the first fault-tolerant operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 is a flow chart of a fault-tolerant operation control method provided by some embodiments of the present application;

[0020] Figure 2 is a partial flow chart of the fault-tolerant operation control method provided by some embodiments of the present application;

[0021] Figure 3 is another partial flow chart of the fault-tolerant operation control method provided by some embodiments of the present application;

[0022] Figure 4 This is another partial flow chart of the fault-tolerant operation control method provided by some embodiments of the present application;

[0023] Figure 5 This is another partial flow chart of the fault-tolerant operation control method provided by some embodiments of the present application;

[0024] Figure 6 This is another partial flow chart of the fault-tolerant operation control method provided by some embodiments of the present application;

[0025] Figure 7 This is another partial flow chart of the fault-tolerant operation control method provided by some embodiments of the present application;

[0026] Figure 8 This is another partial flow chart of the fault-tolerant operation control method provided by some embodiments of the present application;

[0027] Figure 9 This is another partial flow chart of the fault-tolerant operation control method provided by some embodiments of the present application;

[0028] Figure 10 This is a structural diagram of an air conditioner provided in some embodiments of the present application.

[0029] Description of main component symbols:

[0030] 1-air conditioner, 10-processor, 20-memory. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making creative efforts are within the scope of protection of this application.

[0032] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the said features. In the description of the present application, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0033] “A and / or B” includes the following three combinations: A only, B only, and a combination of A and B.

[0034] The use of "suitable for" or "configured to" in this application is intended to be open and inclusive language, and does not exclude devices that are adapted or configured to perform additional tasks or steps. In addition, the use of "based on" is intended to be open and inclusive, as a process, step, calculation, or other action that is "based on" one or more stated conditions or values ​​may, in practice, be based on additional conditions or values ​​beyond those stated.

[0035] In this application, the word "exemplary" is used to mean "serving as an example, illustration, or illustration." Any embodiment described in this application as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. The following description is given to enable any person skilled in the art to implement and use the present application. In the following description, details are listed for the purpose of explanation. It should be understood that one of ordinary skill in the art can recognize that the present application can be implemented without using these specific details. In other instances, well-known structures and processes are not elaborated in detail to avoid obscuring the description of the present application with unnecessary details. Therefore, the present application is not intended to be limited to the embodiments shown, but is consistent with the widest scope consistent with the principles and features disclosed in this application.

[0036] like Figure 1As shown, in a first aspect, embodiments of the present application provide a fault-tolerant operation control method, comprising steps S10 to S40, for controlling air conditioner 1 to perform reliable fault-tolerant operation when an indoor temperature sensor fails, thereby reducing the operational risk of air conditioner 1 during the fault-tolerant operation process. The type of air conditioner 1 can be determined based on actual needs, and can be, for example, a wall-mounted air conditioner, a cabinet air conditioner, a window air conditioner, a ceiling air conditioner, etc., and this embodiment of the present application does not limit this.

[0037] S10: Determine whether the indoor temperature sensor and the indoor coil temperature sensor are faulty.

[0038] Here, the indoor temperature sensor can be set on the indoor side of the air conditioner 1 to detect the indoor ambient temperature. The indoor coil temperature sensor can be set on the heat exchange coil of the indoor heat exchanger to detect the heat exchange coil temperature of the indoor heat exchanger.

[0039] S20: In response to determining that the indoor temperature sensor fails and the indoor coil temperature sensor does not fail, controlling the air conditioner 1 to enter a first fault-tolerant operation to determine the indoor ambient temperature according to the indoor coil temperature, and controlling the air conditioner 1 to operate according to the indoor ambient temperature.

[0040] When it is determined that the indoor temperature sensor has failed but the indoor coil temperature sensor has not, it can be determined that the indoor temperature sensor is unable to detect or accurately detect the indoor ambient temperature due to the failure, but the indoor coil temperature sensor can still accurately detect the heat exchange coil temperature of the indoor heat exchanger. At this point, the air conditioner 1 can be controlled to enter a first fault-tolerant operation. In the first fault-tolerant operation, the indoor ambient temperature can be calculated based on the indoor coil temperature detected by the indoor coil temperature sensor, and the operation of the air conditioner 1 can be controlled based on the calculated indoor ambient temperature. For example, the operation of the air conditioner 1 can be controlled based on both the indoor coil temperature detected by the indoor coil temperature sensor and the calculated indoor ambient temperature. In this way, when the indoor temperature sensor fails, the air conditioner 1 can still be controlled to execute the target functional mode required by the user. The target functional mode can be a different functional mode, such as cooling / heating, to meet the user's basic usage needs in the fault state.

[0041] For example, when it is determined that the indoor temperature sensor has failed, a fault code can be sent to the indoor side of the air conditioner 1 and displayed on the indoor display screen, so that the user and / or after-sales service personnel are informed of the fault status of the indoor temperature sensor. The fault information and relevant parameter information during the first fault-tolerant operation are uploaded to the cloud server, and the cloud server can then send after-sales service instructions to the after-sales service personnel, so that the after-sales service personnel can promptly be informed of the fault information of the air conditioner 1 and contact the user for after-sales maintenance as soon as possible, thereby reducing after-sales maintenance response time.

[0042] S30: After the air conditioner 1 enters the first fault-tolerant operation and reaches the first operation time, it is determined whether the air conditioner 1 has a high load risk.

[0043] Here, the first operating time can be pre-set in the control system of the air conditioner 1. The specific value of the first operating time can be determined according to actual needs and is not limited in the embodiments of the present application. The first operating times corresponding to different target functional modes can be the same or different; in some embodiments, the first operating times corresponding to different target functional modes can be different, and the first operating time can be determined based on the type of target functional mode.

[0044] In some embodiments, after the air conditioner 1 enters the first fault-tolerant operation and the operation time of the first fault-tolerant operation reaches the first operation time, it can be considered that the air conditioner 1 is in a stable operation state of "stably operating in the target functional mode required by the user according to the measurement value of the indoor coil temperature sensor." At this time, it can be further determined whether the operating load of the air conditioner 1 is too high to exceed the safe operating load range when the air conditioner 1 is operating in the target functional mode according to the measurement value of the indoor coil temperature sensor; if the air conditioner 1 has a high load risk, it indicates that the operating load of the air conditioner 1 is too high to exceed the safe operating load range, and if the air conditioner 1 operates at the current operating load, it may cause damage and shutdown; if the air conditioner 1 does not have a high load risk, the air conditioner 1 is still within the safe range when operating at the current operating load.

[0045] S40: In response to determining that the air conditioner 1 has a high load risk, adjusting the operating parameters of the air conditioner 1 to reduce the operating load of the air conditioner 1. Here, the operating parameters include at least one of the compressor frequency, the indoor fan speed, and the outdoor fan speed.

[0046] If air conditioner 1 is determined to be at a high load risk, this indicates that continuing to operate air conditioner 1 with its current operating parameters poses a significant safety risk. In this case, the operating parameters of air conditioner 1 need to be adjusted to reduce the operating load of air conditioner 1 to a safe range, thereby eliminating or at least significantly reducing the safety risk of air conditioner 1 in the first fault-tolerant operation, allowing air conditioner 1 to reliably meet the user's functional needs in the first fault-tolerant operation.

[0047] Compared with the related art, the fault-tolerant operation control method provided in the embodiment of the present application first determines whether the indoor temperature sensor and the indoor coil temperature sensor are faulty, and when it is determined that the indoor temperature sensor is faulty and the indoor coil temperature sensor is not faulty, controls the air conditioner 1 to enter the first fault-tolerant operation, so as to determine the indoor ambient temperature according to the indoor coil temperature, and control the operation of the air conditioner 1 according to the indoor ambient temperature, and then further determines whether the air conditioner 1 has a high load risk after the first fault-tolerant operation reaches the first operation time, and when it is determined that the air conditioner 1 has a high load risk, adjusts the operating parameters of the air conditioner 1 to reduce the operating load of the air conditioner 1; in this way, the air conditioner 1 can operate in a fault-tolerant manner when the indoor temperature sensor fails, and eliminate or at least greatly reduce the safety operation risk of the air conditioner 1 in the first fault-tolerant operation, so that the air conditioner 1 can reliably meet the functional needs of the user in the first fault-tolerant operation.

[0048] like Figure 2 As shown, in some embodiments, in response to the air conditioner 1 being in a refrigeration cycle, ie, operating in a cooling function mode, S40 may include S41 to S43.

[0049] S41: Determine whether the rotation speed of the outdoor fan is greater than or equal to the outdoor unit rotation speed threshold.

[0050] Here, the outdoor unit speed threshold can be pre-set in the control system of the air conditioner 1 to determine the speed of the outdoor fan and whether it is necessary to further increase the speed of the outdoor fan. The specific value of the outdoor unit speed threshold can be determined according to actual needs, and the embodiment of the present application does not limit this. When the speed of the outdoor fan is greater than or equal to the outdoor unit speed threshold, it can be determined that the speed of the outdoor fan is already in a relatively high operating speed range, the air convection at the outdoor heat exchanger is relatively sufficient, and the heat exchange efficiency of the outdoor heat exchanger cannot be improved by further increasing the speed of the outdoor fan; when the speed of the outdoor fan is less than the outdoor unit speed threshold, it can be determined that the speed of the outdoor fan is still in a relatively low operating speed range, the air convection at the outdoor heat exchanger is not sufficient, and the heat exchange efficiency of the outdoor heat exchanger can be improved by increasing the speed of the outdoor fan.

[0051] S42: In response to determining that the speed of the outdoor fan is greater than or equal to the outdoor unit speed threshold, controlling the compressor to reduce the frequency, controlling the compressor to stop after the compressor frequency is reduced to the frequency threshold, and controlling the compressor to restart after a preset stop time.

[0052] When the outdoor fan speed is determined to be greater than or equal to the outdoor unit speed threshold, it can be determined that the outdoor fan speed is already in a relatively high operating speed range, and the air convection at the outdoor heat exchanger is relatively sufficient, and the heat exchange efficiency of the outdoor heat exchanger cannot be improved by further increasing the outdoor fan speed. In this case, the compressor frequency can be controlled to reduce the refrigerant flow at the outdoor heat exchanger to improve the heat exchange efficiency of the outdoor heat exchanger and reduce the ineffective operating load and energy waste of the outdoor heat exchanger, thereby reducing the operating load of the air conditioner 1.

[0053] Here, the compressor can be controlled to gradually reduce its frequency so that the operating load of the air conditioner 1 gradually decreases to a safe range. When the compressor frequency is reduced to the frequency threshold, if the operating load of the air conditioner 1 has not yet decreased to a safe range and the air conditioner 1 still faces a high load risk, the compressor can be controlled to shut down, and the operating load of the air conditioner 1 can be reduced to a safe range by shutting down. When the compressor shutdown time reaches the preset shutdown time, it can be determined that the high load risk of the air conditioner 1 has been completely eliminated. At this time, the compressor can be controlled to restart, so that the air conditioner 1 can resume operation in the cooling function mode, thereby meeting the user's basic functional needs.

[0054] S43: In response to determining that the rotation speed of the outdoor fan is less than the outdoor unit rotation speed threshold, controlling the outdoor fan to increase the rotation speed.

[0055] When it is determined that the speed of the outdoor fan is less than the outdoor unit speed threshold, it can be determined that the speed of the outdoor fan is still in a relatively low operating speed range, and the air convection at the outdoor heat exchanger is not sufficient. The heat exchange efficiency of the outdoor heat exchanger can be improved by increasing the speed of the outdoor fan. At this time, the outdoor fan can be controlled to increase the speed to effectively improve the heat exchange efficiency of the outdoor heat exchanger, reduce the overall operating load of the air conditioner 1, and eliminate or at least reduce to a certain extent the high load risk of the air conditioner 1. After the speed of the outdoor fan is increased to the outdoor unit speed threshold, if the air conditioner 1 still faces a high load risk, S42 can be continued to be executed to further reduce the operating load of the air conditioner 1.

[0056] By setting S41 to S43, the corresponding operating parameters of the air conditioner 1 can be accurately controlled when the air conditioner 1 operates in the cooling function mode, thereby accurately and effectively reducing the operating load of the air conditioner 1 in the first fault-tolerant operation, so that the air conditioner 1 can reliably meet the user's cooling function needs in the first fault-tolerant operation.

[0057] like Figure 3 As shown, in some embodiments, in response to determining that the air conditioner 1 is in a heating cycle, ie, operating in a heating function mode, S40 may include S41 ′ to S43 ′.

[0058] S41': Determine whether the speed of the indoor fan is greater than or equal to the indoor unit speed threshold.

[0059] Here, the indoor unit speed threshold can be pre-set in the control system of the air conditioner 1 to determine the speed of the indoor fan and whether it is necessary to further increase the speed of the indoor fan. The specific value of the indoor unit speed threshold can be determined according to actual needs, and the embodiment of the present application does not limit this. When the speed of the indoor fan is greater than or equal to the indoor unit speed threshold, it can be determined that the speed of the indoor fan is already in a relatively high operating speed range, the air convection at the indoor heat exchanger is relatively sufficient, and the heat exchange efficiency of the indoor heat exchanger cannot be improved by further increasing the speed of the indoor fan; when the speed of the indoor fan is less than the indoor unit speed threshold, it can be determined that the speed of the indoor fan is still in a relatively low operating speed range, the air convection at the indoor heat exchanger is not sufficient, and the heat exchange efficiency of the indoor heat exchanger can be improved by increasing the speed of the indoor fan.

[0060] S42': In response to determining that the speed of the indoor fan is greater than or equal to the indoor unit speed threshold, controlling the compressor to reduce the frequency, controlling the compressor to stop after the compressor frequency is reduced to the frequency threshold, and controlling the compressor to restart after a preset stop time.

[0061] When the indoor fan speed is determined to be greater than or equal to the indoor unit speed threshold, it can be determined that the indoor fan speed is already in a relatively high operating speed range, and the air convection at the indoor heat exchanger is relatively sufficient, and the heat exchange efficiency of the indoor heat exchanger cannot be improved by further increasing the indoor fan speed. In this case, the compressor frequency can be controlled to reduce the refrigerant flow at the indoor heat exchanger to improve the heat exchange efficiency of the indoor heat exchanger and reduce the ineffective operating load and energy waste of the indoor heat exchanger, thereby reducing the operating load of the air conditioner 1.

[0062] Here, the compressor can be controlled to gradually reduce its frequency so that the operating load of the air conditioner 1 gradually decreases to a safe range. When the compressor frequency is reduced to the frequency threshold, if the operating load of the air conditioner 1 has not yet decreased to a safe range and the air conditioner 1 still faces a high load risk, the compressor can be controlled to shut down, and the operating load of the air conditioner 1 can be reduced to a safe range by shutting down. When the compressor shutdown time reaches the preset shutdown time, it can be determined that the high load risk of the air conditioner 1 has been completely eliminated. At this time, the compressor can be controlled to restart, so that the air conditioner 1 can resume operation in the cooling function mode, thereby meeting the user's basic functional needs.

[0063] S43': In response to determining that the rotation speed of the indoor fan is less than the indoor unit rotation speed threshold, controlling the indoor fan to increase the rotation speed.

[0064] When it is determined that the speed of the indoor fan is less than the indoor unit speed threshold, it can be determined that the speed of the indoor fan is still in a relatively low operating speed range, and the air convection at the indoor heat exchanger is not sufficient. The heat exchange efficiency of the indoor heat exchanger can be improved by increasing the speed of the indoor fan. At this time, the indoor fan can be controlled to increase the speed to effectively improve the heat exchange efficiency of the indoor heat exchanger, reduce the overall operating load of the air conditioner 1, and eliminate or at least reduce to a certain extent the high load risk of the air conditioner 1. After the speed of the indoor fan is increased to the indoor unit speed threshold, if the air conditioner 1 still faces a high load risk, S42 can be continued to be executed to further reduce the operating load of the air conditioner 1.

[0065] By setting S41'~S43', the corresponding operating parameters of the air conditioner 1 can be accurately controlled when the air conditioner 1 operates in the heating function mode, thereby accurately and effectively reducing the operating load of the air conditioner 1 in the first fault-tolerant operation, so that the air conditioner 1 can reliably meet the user's heating function needs in the first fault-tolerant operation.

[0066] like Figure 4 As shown, in some embodiments, “controlling the compressor to restart after a preset downtime” in S42 and S42 ′ may include S421 - S422 .

[0067] S421: Determine the current indoor ambient temperature based on the indoor coil temperature at the end of the preset downtime and a preset correction value.

[0068] Here, the end moment of the preset downtime is the restart moment of the compressor; accordingly, the indoor coil temperature at the end moment of the preset downtime is the indoor coil temperature at the restart moment of the compressor. The preset correction value can be used to correct the indoor coil temperature at the restart moment of the compressor to determine the indoor ambient temperature at the restart moment. For example, in an experimental test, the compressor can be controlled to gradually reduce the frequency to shutdown in the cooling function mode / heating function mode and restart after the preset downtime, and the measurement values ​​of the normally working indoor temperature sensor and the indoor coil temperature sensor at the restart moment of the compressor are obtained, and then the specific value of the preset correction value is determined based on the measurement values ​​of the indoor temperature sensor and the indoor coil temperature sensor at the restart moment of the compressor.

[0069] S422: Control the compressor to restart according to the indoor ambient temperature.

[0070] After determining the indoor ambient temperature, the compressor can be controlled to restart according to the indoor ambient temperature.

[0071] By setting S421 to S422, the indoor ambient temperature can be determined more accurately after the preset downtime, and the compressor can be restarted more accurately according to the indoor ambient temperature, so that the operating state of the compressor and the air conditioner 1 is better.

[0072] like Figure 5 As shown, in some embodiments, in response to the air conditioner 1 being in a refrigeration cycle, ie, operating in a cooling function mode, S30 may include S31 to S33.

[0073] S31: Determine whether the outdoor coil temperature is greater than or equal to an outdoor coil temperature threshold.

[0074] Here, the outdoor coil temperature can be measured in real time by an outdoor coil temperature sensor, which can be located on the heat exchange coil of the outdoor heat exchanger. An external coil temperature threshold can be pre-set in the control system of the air conditioner 1 to determine whether the outdoor coil temperature is excessively high. The specific value of the external coil temperature threshold can be determined based on actual needs and is not limited in this embodiment of the present application.

[0075] S32 : In response to determining that the outdoor coil temperature is greater than or equal to the outdoor coil temperature threshold, determining that the air conditioner 1 has a high load risk.

[0076] When it is determined that the outdoor coil temperature is greater than or equal to the external coil temperature threshold, it can be determined whether the outdoor coil temperature is too high, and further it can be determined that the air conditioner 1 has a high load risk.

[0077] S33 : In response to determining that the outdoor coil temperature is less than the outdoor coil temperature threshold, determining that the air conditioner 1 does not have a high load risk.

[0078] When it is determined that the outdoor coil temperature is lower than the external pipe temperature threshold, it can be determined that the outdoor coil temperature is relatively suitable and not too high, and further it can be determined that the air conditioner 1 does not have a high load risk for the time being.

[0079] By setting S31 to S33, when the air conditioner 1 operates in the cooling function mode, it can be more accurately determined whether the air conditioner 1 has a high load risk, thereby timely and accurately reducing the high load risk of the air conditioner 1.

[0080] like Figure 6 As shown, in some embodiments, in response to determining that the air conditioner 1 is in a heating cycle, ie, operating in a heating function mode, S30 may include S31 ′ to S33 ′.

[0081] S31': Determine whether the indoor coil temperature is greater than or equal to the internal pipe temperature threshold.

[0082] Here, the internal pipe temperature threshold can be pre-set in the control system of the air conditioner 1 to determine whether the indoor coil temperature is too high. The specific value of the internal pipe temperature threshold can be determined according to actual needs and is not limited in this embodiment of the application.

[0083] S32 ′: In response to determining that the indoor coil temperature is greater than or equal to the inner coil temperature threshold, it is determined that the air conditioner 1 has a high load risk.

[0084] When it is determined that the indoor coil temperature is greater than or equal to the internal pipe temperature threshold, it can be determined whether the indoor coil temperature is too high, and further it can be determined that the air conditioner 1 has a high load risk.

[0085] S33 ′: In response to determining that the indoor coil temperature is less than the inner pipe temperature threshold, it is determined that the air conditioner 1 does not have a high load risk.

[0086] When it is determined that the indoor coil temperature is lower than the inner tube temperature threshold, it can be determined that the indoor coil temperature is relatively suitable and not too high, and further it can be determined that the air conditioner 1 does not have a high load risk for the time being.

[0087] By setting S31 to S33, when the air conditioner 1 operates in the heating function mode, it can be more accurately determined whether the air conditioner 1 has a high load risk, thereby timely and accurately reducing the high load risk of the air conditioner 1.

[0088] like Figure 7 As shown, in some embodiments, "controlling the air conditioner 1 to enter the first fault-tolerant operation" in S20 may include S21 to S23.

[0089] S21: In response to the air conditioner 1 being in the shutdown state when the indoor temperature sensor fails, the air conditioner 1 is controlled to start running with a first preset temperature as the indoor ambient temperature, and the indoor coil temperature at the startup time is obtained, and the first preset temperature is greater than the indoor coil temperature at the startup time.

[0090] The first preset temperature is a default value pre-set in the control system of the air conditioner 1, and the first preset temperature is greater than the indoor coil temperature at the startup time. The value of the first preset temperature can be determined according to actual needs, and the embodiments of the present application do not limit this. When the air conditioner 1 receives a power-on command input by the user while in the off state, if it is determined that the indoor temperature sensor has failed, the first preset temperature can be used as the indoor ambient temperature to control the startup of the air conditioner 1, so that the air conditioner 1 starts to enter the first fault-tolerant operation. At the same time, the indoor coil temperature at the startup time is obtained in real time through the indoor coil temperature sensor.

[0091] S22: After the air conditioner 1 starts and runs to the second running time, the indoor ambient temperature at the current moment is determined based on the indoor coil temperature at the current moment, the indoor coil temperature at the start-up moment, and the indoor coil temperature at the end of the second running time, and the operation of the air conditioner 1 is controlled according to the indoor ambient temperature. The first running time is longer than the second running time.

[0092] The second operating time can be pre-set in the control system of the air conditioner 1. The specific value of the second operating time can be determined according to actual needs, and the embodiment of the present application does not limit this. Here, the second operating time is less than the first operating time, that is, after the air conditioner 1 enters the first fault-tolerant operation, it first reaches the end moment of the second operating time and then reaches the end moment of the first operating time. According to the indoor coil temperature at the current moment, the indoor coil temperature at the startup moment, and the indoor coil temperature at the end moment of the second operating time, the indoor ambient temperature at the current moment can be determined, and the indoor ambient temperature can be updated from the above-mentioned first preset temperature to the indoor ambient temperature at the current moment, and then the operation of the air conditioner 1 can be controlled according to the updated indoor ambient temperature. For example, the indoor ambient temperature at the current moment can be determined according to the following formula (1):

[0093] T 当前内环温 =T 当前内管温 -T 第二末端时刻 +T 启动时刻 (1)

[0094] Among them, T 当前内环温 is the current indoor ambient temperature, T 当前内管温 is the indoor coil temperature at the current moment, T 启动时刻 is the indoor coil temperature at the start-up time, T 第二末端时刻 is the indoor coil temperature at the end of the second operating time.

[0095] S23: In response to the air conditioner 1 being in the on-state when the indoor temperature sensor fails, the indoor coil temperature at the current moment is determined based on the indoor coil temperature at the current moment, the indoor coil temperature at the moment when the air conditioner 1 enters the fault-tolerant operation, and the indoor coil temperature at the end of the second operation period from the first fault-tolerant operation of the air conditioner 1, and the operation of the air conditioner 1 is controlled based on the indoor ambient temperature. For example, the indoor ambient temperature at the current moment can be determined according to the above formula (1).

[0096] By setting S21 to S23, corresponding control measures can be taken according to the operating state of the air conditioner 1, so that the air conditioner 1 can accurately and reliably enter the first fault-tolerant operation, thereby improving the operating energy efficiency and reliability of the air conditioner 1 in the first fault-tolerant operation.

[0097] like Figure 8 As shown, in some embodiments, “determining whether the indoor temperature sensor fails” in S10 may include S11 to S13 to accurately determine whether the indoor temperature sensor fails.

[0098] S11: Determine whether the measurement value of the indoor temperature sensor is within a normal measurement range.

[0099] S12: In response to determining that the measurement value of the indoor temperature sensor is within a normal measurement value range, determining that the indoor temperature sensor is not faulty.

[0100] S13: In response to determining that the measurement value of the indoor temperature sensor is outside the normal measurement value range, it is determined that the indoor temperature sensor has failed.

[0101] like Figure 9 As shown, in some embodiments, the fault-tolerant operation control method may further include S51 to S52.

[0102] S51: When the air conditioner 1 enters the first fault-tolerant operation and reaches the third operation time, it is determined whether the indoor temperature sensor has eliminated the fault.

[0103] The third operating time can be pre-set in the control system of the air conditioner 1. The specific value of the third operating time can be determined according to actual needs and is not limited in this embodiment of the present application. Here, the third operating time is greater than the first operating time, so that S51 occurs after S30; for example, the third operating time is greater than the second operating time. The third operating times corresponding to different target functional modes can be the same or different; in some embodiments, the third operating times corresponding to different target functional modes can be different, and the third operating time can be determined based on the type of target functional mode.

[0104] In some embodiments, after the air conditioner 1 enters the first fault-tolerant operation and the operation time of the first fault-tolerant operation reaches a third operation time, it can be determined whether the indoor temperature sensor has been fault-free. If it is determined that the indoor temperature sensor has been fault-free, it can be determined that the indoor temperature sensor has been repaired or replaced and the indoor ambient temperature can be detected again in real time. If it is determined that the indoor temperature sensor has not been fault-free, it can be determined that the indoor temperature sensor has not been repaired or replaced and is still unable to detect the indoor ambient temperature.

[0105] S52: In response to determining that the indoor temperature sensor has not eliminated the fault, the air conditioner 1 is controlled to shut down.

[0106] If the indoor temperature sensor is determined to be faulty, it can be determined that after the air conditioner 1 has run for the third operating time in fault tolerance mode, the indoor temperature sensor has not been repaired or replaced and is still unable to detect the indoor ambient temperature. In this case, the air conditioner 1 can be forced to shut down and wait for repair, and the air conditioner 1 can be prohibited from running again until the repair is completed.

[0107] S53: In response to determining that the indoor temperature sensor has eliminated the fault, the air conditioner 1 is controlled to exit the first fault-tolerant operation and switch to the corresponding target function mode. After switching to the corresponding target function mode, the air conditioner 1 can be controlled to operate according to the indoor temperature sensor detected in real time.

[0108] In some embodiments, the fault-tolerant operation control method may further include S61 to S62.

[0109] S61: Determine whether the indoor temperature sensor and the indoor coil temperature sensor are faulty.

[0110] S62: In response to determining that the indoor coil temperature sensor fails and the indoor temperature sensor does not fail, controlling the air conditioner 1 to enter a second fault-tolerant operation to determine the indoor coil temperature according to the indoor ambient temperature and control the operation of the air conditioner 1 according to the indoor coil temperature.

[0111] When it is determined that the indoor coil temperature sensor has failed but the indoor temperature sensor has not, it can be determined that the indoor coil temperature sensor is unable to detect or accurately detect the indoor coil temperature due to the failure, but the indoor temperature sensor can still accurately detect the indoor ambient temperature. At this time, the air conditioner 1 can be controlled to enter the second fault-tolerant operation; in the second fault-tolerant operation, the indoor coil temperature can be calculated based on the indoor ambient temperature detected by the indoor temperature sensor, and then the air conditioner 1 operation can be controlled based on the calculated indoor coil temperature. For example, the air conditioner 1 operation can be controlled based on both the indoor ambient temperature detected by the indoor temperature sensor and the calculated indoor coil temperature. In this way, when the indoor coil temperature sensor fails, the air conditioner 1 can still be controlled to execute the target function mode required by the user. The target function mode can be a different function mode such as cooling / heating, so as to meet the user's basic usage needs in the fault state.

[0112] For example, when it is determined that the indoor coil temperature sensor has failed, a fault code can be sent to the indoor side of the air conditioner 1 and displayed on the indoor display screen, so that the user and / or after-sales service personnel are informed of the fault status of the indoor coil temperature sensor. The fault information and relevant parameter information during the first fault-tolerant operation are uploaded to the cloud server, and the cloud server can then send after-sales service instructions to the after-sales service personnel, so that the after-sales service personnel can promptly be informed of the fault information of the air conditioner 1 and contact the user for after-sales maintenance as soon as possible, thereby reducing after-sales maintenance response time.

[0113] In some examples, when controlling the air conditioner 1 to enter the second fault-tolerant operation, the temperature range of the indoor ambient temperature measured in real time by the indoor temperature sensor can be first determined, and the corresponding temperature correction value can be determined based on the temperature range, and then the indoor coil temperature at the current moment can be determined based on the temperature correction value and the indoor ambient temperature measured in real time by the indoor temperature sensor.

[0114] In some examples, “determining whether the indoor coil temperature sensor is faulty” in S61 may include S611 to S613 to accurately determine whether the indoor coil temperature sensor is faulty.

[0115] S611: Determine whether the measurement value of the indoor coil temperature sensor is within a normal measurement range.

[0116] S612: In response to determining that the measurement value of the indoor coil temperature sensor is within a normal measurement value range, determine that the indoor coil temperature sensor is not faulty.

[0117] S613: In response to determining that the measurement value of the indoor coil temperature sensor is outside the normal measurement value range, it is determined that the indoor coil temperature sensor is faulty.

[0118] In the second aspect, an embodiment of the present application provides a fault-tolerant operation control device, including: a fault judgment circuit, configured to determine whether the indoor temperature sensor and the indoor coil temperature sensor are faulty; a fault-tolerant operation circuit, configured to control the air conditioner 1 to enter a first fault-tolerant operation in response to determining that the indoor temperature sensor is faulty and the indoor coil temperature sensor is not faulty, so as to determine the indoor ambient temperature according to the indoor coil temperature, and control the operation of the air conditioner 1 according to the indoor ambient temperature; a load risk judgment circuit, configured to determine whether the air conditioner 1 has a high load risk after the air conditioner 1 enters the first fault-tolerant operation to a first operation time; a load reduction control circuit, configured to adjust the operating parameters of the air conditioner 1 to reduce the operating load of the air conditioner 1 in response to determining that the air conditioner 1 has a high load risk, the operating parameters including at least one of the compressor frequency, the indoor fan speed and the outdoor fan speed.

[0119] like Figure 10 As shown, in a third aspect, embodiments of the present application provide an air conditioner 1, comprising a processor 10 and a memory 20. The memory 20 stores a computer program, and when the computer program is executed by the processor 10, the fault-tolerant operation control method described in any of the above embodiments is implemented. The type of air conditioner 1 can be determined based on actual needs, and can be, for example, a wall-mounted air conditioner, a cabinet air conditioner, a window air conditioner, a ceiling air conditioner, etc., and this embodiment of the present application is not limited to this.

[0120] The processor 10 is connected to the memory 20 and can perform various actions and processes according to the program stored in the memory 20. Specifically, the processor 10 can be an integrated circuit chip with signal processing capabilities. The above-mentioned processor 10 can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and can implement or execute the various methods, steps and logic block diagrams disclosed in the embodiments of the present application. The general-purpose processor can be a microprocessor or the processor can also be any conventional processor, etc., which can be an X86 architecture or an ARM architecture.

[0121] The memory 20 may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memories. The non-volatile memory may be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory may be a random access memory (RAM), which is used as an external cache. By way of example but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous linked dynamic random access memory (SLDRAM), and direct memory bus random access memory (DRRAM). It should be noted that the memory 20 of the method described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0122] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium on which a computer program is stored. The computer program is loaded by the processor 10 to execute the steps in the control method of any of the above embodiments.

[0123] Exemplarily, the above-mentioned computer-readable storage media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes, etc.), optical disks (e.g., CDs (Compact Disks), DVDs (Digital Versatile Disks), etc.), smart cards, and flash memory devices (e.g., EPROMs (Erasable Programmable Read-Only Memory), cards, sticks, or key drives, etc.). The various computer-readable storage media described in the embodiments of the present application may represent one or more devices and / or other machine-readable storage media for storing information. The term "machine-readable storage medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.

[0124] The above is a detailed introduction to a fault-tolerant operation control method, device, air conditioner and computer-readable storage medium provided in the embodiments of the present application. Specific examples are used herein to illustrate the principles and implementation methods of the present application. The description of the above embodiments is only used to help understand the method of the present application and its core idea. At the same time, for technical personnel in this field, based on the ideas of the present application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as a limitation on the present application.

Claims

1. A fault-tolerant operation control method, characterized in that: include: Determine whether the indoor temperature sensor and indoor coil temperature sensor are faulty; In response to determining that the indoor temperature sensor has failed and the indoor coil temperature sensor has not failed, controlling the air conditioner to enter a first fault-tolerant operation to determine an indoor ambient temperature based on the indoor coil temperature and controlling the air conditioner to operate based on the indoor ambient temperature; After the air conditioner enters the first fault-tolerant operation and reaches a first operation time, determining whether the air conditioner has a high load risk; In response to determining that the air conditioner has a high load risk, an operating parameter of the air conditioner is adjusted to reduce the operating load of the air conditioner, the operating parameter including at least one of a compressor frequency, an indoor fan speed, and an outdoor fan speed.

2. The fault-tolerant operation control method according to claim 1, characterized in that: In response to the air conditioner being in a refrigeration cycle, adjusting the operating parameters of the air conditioner to reduce the operating load of the air conditioner includes: Determine whether the speed of the outdoor fan is greater than or equal to the outdoor unit speed threshold; In response to determining that the speed of the outdoor fan is greater than or equal to the outdoor unit speed threshold, controlling the compressor to reduce the frequency, controlling the compressor to stop after the compressor frequency is reduced to the frequency threshold, and controlling the compressor to restart after a preset stop time has passed; In response to determining that the rotation speed of the outdoor fan is less than the outdoor unit rotation speed threshold, the outdoor fan is controlled to increase its rotation speed.

3. The fault-tolerant operation control method according to claim 1, characterized in that: In response to determining that the air conditioner is in a heating cycle, adjusting the operating parameters of the air conditioner to reduce the operating load of the air conditioner includes: Determine whether the speed of the indoor fan is greater than or equal to the indoor unit speed threshold; In response to determining that the speed of the indoor fan is greater than or equal to the indoor unit speed threshold, controlling the compressor to reduce the frequency, controlling the compressor to stop after the compressor frequency is reduced to the frequency threshold, and controlling the compressor to restart after a preset stop time has passed; In response to determining that the rotation speed of the indoor fan is less than the indoor unit rotation speed threshold, the indoor fan is controlled to increase the rotation speed.

4. The fault-tolerant operation control method according to claim 2 or 3, characterized in that: Controlling the compressor to restart after a preset downtime, comprising: Determining the current indoor ambient temperature based on the indoor coil temperature at the end of the preset downtime and a preset correction value; The compressor is controlled to restart according to the indoor ambient temperature.

5. The fault-tolerant operation control method according to claim 1, characterized in that: In response to the air conditioner being in a refrigeration cycle, determining whether the air conditioner has a high load risk includes: Determine whether the outdoor coil temperature is greater than or equal to the external pipe temperature threshold; In response to determining that the outdoor coil temperature is greater than or equal to an outdoor coil temperature threshold, determining that the air conditioner has a high load risk; In response to determining that the outdoor coil temperature is less than an outdoor coil temperature threshold, it is determined that the air conditioner does not have a high load risk.

6. The fault-tolerant operation control method according to claim 1, characterized in that: In response to determining that the air conditioner is in a heating cycle, determining whether the air conditioner has a high load risk includes: Determine whether the indoor coil temperature is greater than or equal to the internal pipe temperature threshold; In response to determining that the indoor coil temperature is greater than or equal to an inner coil temperature threshold, determining that the air conditioner has a high load risk; In response to determining that the indoor coil temperature is less than an inner pipe temperature threshold, it is determined that the air conditioner does not have a high load risk.

7. The fault-tolerant operation control method according to claim 1, characterized in that: Control the air conditioner to enter the first fault-tolerant operation, including: In response to the air conditioner being in an off state when the indoor temperature sensor fails, controlling the air conditioner to start operating with a first preset temperature as the indoor ambient temperature, and obtaining the indoor coil temperature at the startup time, wherein the first preset temperature is greater than the indoor coil temperature at the startup time; After the air conditioner is started and runs for a second running time, determining the current indoor ambient temperature based on the current indoor coil temperature, the indoor coil temperature at the start-up time, and the indoor coil temperature at the end of the second running time, and controlling the operation of the air conditioner based on the indoor ambient temperature, wherein the first running time is longer than the second running time; In response to the air conditioner being in the on-state when the indoor temperature sensor fails, the indoor ambient temperature at the current moment is determined based on the indoor coil temperature at the current moment, the indoor coil temperature at the moment when the air conditioner enters the fault-tolerant operation, and the indoor coil temperature at the end of the period from the air conditioner entering the first fault-tolerant operation to the second operation time, and the operation of the air conditioner is controlled based on the indoor ambient temperature.

8. The fault-tolerant operation control method according to claim 1, characterized in that: Determine if the indoor temperature sensor is faulty, including: Determine whether the measurement value of the indoor temperature sensor is within the normal measurement range; In response to determining that the measurement value of the indoor temperature sensor is within a normal measurement value range, determining that the indoor temperature sensor is not faulty; In response to determining that the measurement value of the indoor temperature sensor is outside a normal measurement value range, it is determined that the indoor temperature sensor has failed.

9. The fault-tolerant operation control method according to claim 1, characterized in that: The fault-tolerant operation control method further includes: When the air conditioner enters the first fault-tolerant operation and reaches the third operation time, determining whether the indoor temperature sensor eliminates the fault; In response to determining that the indoor temperature sensor has not resolved the fault, the air conditioner is controlled to be shut down.

10. The fault-tolerant operation control method according to claim 1, characterized in that: The fault-tolerant operation control method further includes: determining whether the indoor temperature sensor and the indoor coil temperature sensor are faulty; In response to determining that the indoor coil temperature sensor has failed and the indoor temperature sensor has not failed, controlling the air conditioner to enter a second fault-tolerant operation to determine the indoor coil temperature according to the indoor ambient temperature and controlling the air conditioner operation according to the indoor coil temperature.

11. A fault-tolerant operation control device, characterized in that: include: a fault determination circuit configured to determine whether the indoor temperature sensor and the indoor coil temperature sensor are faulty; a fault-tolerant operation circuit configured to, in response to determining that the indoor temperature sensor has failed and the indoor coil temperature sensor has not failed, control the air conditioner to enter a first fault-tolerant operation to determine the indoor ambient temperature based on the indoor coil temperature and control the operation of the air conditioner based on the indoor ambient temperature; a load risk judgment circuit configured to determine whether the air conditioner has a high load risk after the air conditioner enters the first fault-tolerant operation for a first operation time; The load reduction control circuit is configured to adjust the operating parameters of the air conditioner to reduce the operating load of the air conditioner in response to determining that the air conditioner has a high load risk. The operating parameters include at least one of the compressor frequency, the indoor fan speed, and the outdoor fan speed.

12. An air conditioner, characterized in that: include: a memory storing a computer program; A processor, wherein when the computer program is executed by the processor, the fault-tolerant operation control method according to any one of claims 1 to 10 is implemented.

13. A computer-readable storage medium, characterized in that A computer program is stored thereon, and the computer program is loaded by a processor to execute the steps in the fault-tolerant operation control method according to any one of claims 1 to 10.

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