CN106440278B - Air-conditioning and air conditioner electric heating protection method, device - Google Patents
Air-conditioning and air conditioner electric heating protection method, device Download PDFInfo
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- CN106440278B CN106440278B CN201610919846.4A CN201610919846A CN106440278B CN 106440278 B CN106440278 B CN 106440278B CN 201610919846 A CN201610919846 A CN 201610919846A CN 106440278 B CN106440278 B CN 106440278B
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- conditioning
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- electric heating
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/89—Arrangement or mounting of control or safety devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F2110/00—Control inputs relating to air properties
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F11/00—Control or safety arrangements
- F24F11/30—Control or safety arrangements for purposes related to the operation of the system, e.g. for safety or monitoring
- F24F11/32—Responding to malfunctions or emergencies
Abstract
The invention discloses a kind of air conditioner electric heating protection method, device and air-conditionings, are related to air conditioner electric technical field of heating.Wherein, which includes: to be measured in real time to the complete machine electric current of air-conditioning；If the complete machine electric current is more than the first current value and lasting first time threshold, current detecting under starting protection mode；If detection electric current is more than the second current value and lasting second time threshold in timing under protected mode, it is determined that electric heating control relay contact adhesion executes error protection.This method, device and air-conditioning; by complete machine current detection module to complete machine real-time current detection; and the current detecting under starting protection mode when finding current anomaly; error protection is executed when determining the adhesion of electric heating control relay contact; it can accurately and timely find relay contact adhesion, the safety of strong guarantee air conditioner.
Description
Technical field
The present invention relates to air-conditioning electric-heating technology, in particular to a kind of air conditioner electric heating protection method, device and air-conditioning.
Background technique
Air-conditioning winter heating heating efficiency and environment temperature have very big relationship, if environment temperature is lower, just will affect
Heating effect, so many air-conditionings both increase auxiliary electrical heating function, to improve heating effect.
PTC (Positive Temperature Coefficient, posive temperature coefficient thermistor) electric heating work function
Rate is higher, still, if there are adhesion situations for the control electrically heated relay of PTC, PTC electric heating is caused not expect its unlatching
When abnormal start-up, certain harm can be brought to air-conditioning whole system and user security.Therefore, when relay adhesion feelings
When condition occurs, how accurately and timely to carry out detection is the reality technology problem for needing to solve.
Summary of the invention
A technical problem to be solved by this invention, which is to provide, a kind of can accurately and timely carry out air-conditioning electric heater frost protection
Method, apparatus or air-conditioning.
According to an aspect of the present invention, a kind of air conditioner electric heating protection method provided, comprising: to the complete machine electricity of air-conditioning
Stream is measured in real time；If the complete machine electric current is more than the first current value and lasting first time threshold, starting protection mould
Current detecting under formula；If detection electric current is more than the second current value and continues the second time threshold in timing under protected mode
Value, it is determined that electric heating control relay contact adhesion executes error protection.
Optionally, being measured in real time to the complete machine electric current of air-conditioning includes: that air conditioner powers on, and is in Auto-Sensing Mode, stops
The only load of air-conditioning is measured in real time the complete machine electric current of air-conditioning within the T1 time；Or/and in air conditioner operational process
After electric heating stops, in the case where air-conditioning is run without high power load, the complete machine electric current of air-conditioning is measured in real time；Or/
After starting total relay actuation with electric heating, the complete machine electric current of air-conditioning is measured in real time within the T8 time.Wherein, 0 second < T1
< 120 seconds, 0 second < T8 < 120 second.
Optionally, first time threshold is less than or equal to 120 seconds, and the second time threshold is less than or equal to 120 seconds, described fixed
When the time be less than or equal to 300 seconds, first current value be greater than be less than 8A, second current value be greater than be less than 8A.
Optionally, executing error protection includes: prompt failure；And/or stop all high power load work, force interior wind
Machine operation.
Optionally, air-conditioning is electrically heated by PTC electric heater unit.
According to another aspect of the present invention, a kind of air conditioner electric heating protecting device is provided, comprising: complete machine current detecting mould
Block is measured in real time for the complete machine electric current to air-conditioning, if the complete machine electric current is more than the first current value and continues first
Time threshold then sends protected mode current detecting message；Protective current detection module comes from complete machine current detecting for receiving
The protected mode current detecting message of module, current detecting under starting protection mode；If inspection in timing under protected mode
Surveying electric current is more than the second current value and lasting second time threshold, it is determined that electric heating control relay contact adhesion sends event
Hinder message；Failure protection module executes error protection for receiving the failure message from the protective current detection module.
Optionally, complete machine current detection module includes: power-on self-test detection unit, for powering in air conditioner, is in
Auto-Sensing Mode stops all loads of air-conditioning, is measured in real time within the T1 time to the complete machine electric current of air-conditioning；Or/and electricity adds
Detection unit after heat is used in air conditioner operational process, after electric heating stops, in the feelings that air-conditioning is run without high power load
Under condition, the complete machine electric current of air-conditioning is measured in real time；Or/and electric heating starts detection unit, for total in electric heating starting
After relay is attracted, the complete machine electric current of air-conditioning is measured in real time within the T8 time.Wherein, 0 second < T1 < 120 second, 0 second < T8 <
120 seconds.
Optionally, first time threshold is less than or equal to 120 seconds, and the second time threshold is less than or equal to 120 seconds, described fixed
When the time be less than or equal to 300 seconds, first current value is greater than 0A and is less than 8A, and second current value is greater than and 0A and is less than
8A。
Optionally, failure protection module includes: fault cues unit, for prompting the user with failure；And/or safeguard protection
Unit forces inner blower operation for stopping all high power load work.
Optionally, the electric heating assembly of air-conditioning is PTC electric heater unit.
According to another aspect of the invention, a kind of air-conditioning is provided, comprising: electric heater unit；Electric heating control relay；With
Above-mentioned air conditioner electric heating protecting device.
In accordance with a further aspect of the present invention, a kind of air conditioner electric heating protecting device is provided, comprising: memory；And coupling
To the processor of the memory, the processor is configured to being executed based on the instruction being stored in the memory devices
Air conditioner electric heating protection method as described above.
Method, apparatus and air-conditioning of the invention, is measured in real time complete machine electric current, starts when finding current anomaly and protects
Current detecting under shield mode determines that electric heating control relay touches if current detecting is still abnormal under protected mode
Point adhesion can accurately and timely find relay contact adhesion into fault protection scheme, provide air-conditioning accurate, timely
Protection.
By referring to the drawings to the detailed description of exemplary embodiment of the present invention, other feature of the invention and its
Advantage will become apparent.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 shows the flow diagram of air conditioner electric heating protection method one embodiment of the invention；
Fig. 2 shows the circuit diagrams of one embodiment of air-conditioning electric heating auxiliary circuit of the invention；
Fig. 3 shows the flow diagram of another embodiment of air conditioner electric heating protection method of the invention；
Fig. 4 shows the structural schematic diagram of one embodiment of air conditioner electric heating protecting device of the invention；
Fig. 5 shows the structural schematic diagram of another embodiment of air conditioner electric heating protecting device of the invention；With
Fig. 6 shows the structural schematic diagram of one embodiment of the controller for air-conditioning electric heater frost protection of the invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Below
Description only actually at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or make
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, shall fall within the protection scope of the present invention.
One basic ideas of the disclosure include: the total current detection module by air conditioner to such as compressor, PTC
The loads such as electric heating carry out real-time current detection monitoring, when finding the complete machine current value exception, starting protection mode detection, such as
Current anomaly still occurs under protected mode current detecting, then determines relay contact adhesion；Realize that power-on self-test, PTC electricity add
Thermal starting, PTC electric heating stop logic function, can accurate judgement relay whether contact adhesion, find contact adhesion, enter
Fault protection scheme, thus the safety of strong guarantee air conditioner.
Fig. 1 shows the flow diagram of air conditioner electric heating protection method one embodiment of the invention.
As shown in Figure 1, step 102, is measured in real time the complete machine electric current of air-conditioning.In one embodiment, air-conditioning is adopted
It is electrically heated with PTC electric heater unit.The total current of air conditioner operation can be detected by current detection module；According to inspection
The total current of survey can determine whether there is a situation where contact adhesions for the control electrically heated relay of PTC.
Step 104, if complete machine electric current is more than the first current value and lasting first time threshold, determine that complete machine electric current occurs
It is abnormal, then current detecting under starting protection mode.In one embodiment, the first current value is greater than 0A and is less than 8A, preferably small
In 5.5A, such as 2.5A；First time threshold is less than or equal to 120 seconds, for example, continuous 1 second, 3 seconds, 5 seconds.
Step 106, if detection electric current is more than the second current value and continued for the second time in timing under protected mode
Threshold value, it is determined that electric heating control relay contact adhesion executes error protection.In one embodiment, the timing is small
In being equal to 300 seconds, such as 30 seconds, which was less than or equal to 120 seconds, and was less than the timing, for example, continuous 1
Second, 3 seconds, 5 seconds；Second current value is greater than 0A and is less than 8A, preferably smaller than 5.5A, such as 2.5A.Error protection is executed, it can be with
Prompt the user with failure, such as alarm, display failure；In addition, stopping all high power loads, the operation of air-conditioning inner blower is forced,
To guarantee the safety of air-conditioning system.
In above-described embodiment, first time threshold, timing and second time threshold can be directed to different air conditioners
Type chooses suitable parameter by experiment, makes it that can achieve the effect that technical solution does not influence the comfort of user experience again.
First current value and the second current value can be determined according to air conditioner type, pass through experiment choosing according to the circuit of air-conditioning, complete machine type
Select suitable parameter.
In above-described embodiment, complete machine real-time current detection, the electric current under starting protection mode when finding current anomaly are carried out
Detection, if current detecting is still abnormal under protected mode, determines electric heating control relay contact adhesion, into event
Hinder protected mode, can accurately and timely find relay contact adhesion, the safety of strong guarantee air conditioner.
Fig. 2 shows the circuit diagrams of one embodiment of air-conditioning electric heating auxiliary circuit of the invention.As shown in Fig. 2,
The electric heating auxiliary circuit includes electric heating assembly 21, external (total) relay 22.Air-conditioner controller 23 passes through current detecting list
First 231 pairs of electric currents detect, and execute the control of air-conditioning electric heater frost protection.In one embodiment, electric heating assembly 21 is PTC electricity
Heating device, which includes PTC heating sheets 211；There are multiple PTC heating plates, each section of PTC heating plate difference
Including onboard relay 212.Controller 23 can control other loads of total relay 22, onboard relay 212 and air-conditioning.
Fig. 3 shows the flow diagram of another embodiment of air conditioner electric heating protection method of the invention.
As shown in figure 3, step 301, after air conditioner powers on, carries out PTC electric heating relay contact adhesion and protects self-test:
Air conditioner powered in T1 (such as the 3 seconds) time, was in air-conditioning Auto-Sensing Mode, stopped all loads during this period, carried out relay
Device contact adhesion self-test.
Step 302, whether relay notes abnormalities in process of self-test: if in T1 (such as 3 seconds) time memory even
The electric current of continuous time T2 (such as 1 second), and this electric current is greater than the set value I (such as 2.5A), then it is assumed that there are current anomalies.Then
The timing for carrying out T3 (such as the 30 seconds) time, further detects abnormal current situation, if still having consecutive hours within the T3 time
Between T4 (such as 5 seconds) abnormal current, i.e. electric current is greater than the set value I (such as 2.5A), then determines electrical anomaly on air conditioner, hold
Row step 310；If T3 does not have found current anomaly after the time, determine that relay is without exception, continues step 303.
Step 303, self-test is completed, and complete machine can operate normally, and continues step 304.
Step 304, judge whether to meet electric heating unlocking condition? if so, continuing step 305, otherwise, continue step
306。
Step 305, PTC electric heating starts, and whether external total relay detects each section of onboard relay of PTC after being attracted different
Often, contact adhesion protection detection is carried out to the onboard relay of each section of PTC: after external relay (total relay) actuation, starting
There is continuous time T9 (such as 1 second) electric current and is greater than the set value I, then sentence such as within the T8 time in T8 (such as 2 seconds) time timing
There is exception in disconnected PTC electric heating, need further to examine；Start T10 (such as 30 seconds) time timing, if in T10, electricity
Stream still has continuous time T11 (such as 5 seconds) electric current and is greater than the set value I (such as 2.5A), then determines the onboard relay of controller
Device is abnormal, and continues step 310；If the T10 time terminates, current value exception is not found, then determines that onboard relay is no different
Often, complete machine can operate normally.
Step 306, in air conditioner operational process, after PTC electric heating stops, relay contact adhesion is protected and is detected.
It first determines whether PTC electric heating, compressor of air conditioner are in halted state, otherwise continues to walk if it is, continuing step 307
Rapid 304.
Step 307, in the case where no high power load is run, if detected electric in (such as the 3 seconds) time of continuous T 5
Stream is greater than the set value I (such as 2.5A), then it is abnormal to determine that air conditioner exists, starts T6 (such as 30 seconds) time timing, into one
Step detection abnormal current situation, if there is the abnormal current of (such as 3 seconds) continuous time T7 within the T6 time, i.e., electric current is greater than and sets
Definite value I (such as 2.5A) then determines air conditioner current anomaly, continues step 310；If the T6 time terminates, electricity is not detected
Throat floater then determines that relay is without exception, and complete machine can operate normally.
Step 310, if there is relay exception, then enter relay contact adhesion fault protected mode, show failure,
Stop all high power loads, forces inner blower operation.
By current sensing relay exception, in time and accuracy rate is high；By current detecting twice, false alarm can be rejected
Event.In the above-described embodiments, the relay current inspection after power-on self-test, PTC electric heating starting, PTC electric heating stop is realized
Survey logic function, can accurate judgement relay whether contact adhesion, find contact adhesion, into fault protection scheme, Quan Mianyou
Guarantee to power the safety of air conditioner.
Fig. 4 shows the structural schematic diagram of one embodiment of air conditioner electric heating protecting device of the invention.As shown in figure 4,
The air conditioner electric heating protecting device includes: complete machine current detection module 41, is measured in real time for the complete machine electric current to air-conditioning,
If the complete machine electric current is more than the first current value and lasting first time threshold, protected mode current detecting message is sent；
Protective current detection module 42 starts for receiving the protected mode current detecting message from complete machine current detection module 41
Current detecting under protected mode；If detection electric current is more than the second current value and continues second in timing under protected mode
Between threshold value, it is determined that electric heating control relay contact adhesion, send failure message；Failure protection module 43 comes for receiving
The failure message of self-shield current detection module 42, into fault protection scheme.In one embodiment, first time threshold is small
In being equal to 120 seconds, second time threshold is less than or equal to 120 seconds, and timing is less than or equal to 300 seconds, and the first current value is greater than 0A
And it is less than 8A, the second current value is greater than 0A and is less than 8A.
In above-described embodiment, by complete machine current detection module to complete machine real-time current detection, when finding current anomaly
Current detecting under starting protection mode, if current detecting is still abnormal protective current detection module in protected mode,
Then determine electric heating control relay contact adhesion, failure protection module executes error protection, can accurately and timely find after
Appliance contact adhesion, the safety of strong guarantee air conditioner.
Fig. 5 shows the structural schematic diagram of another embodiment of air conditioner electric heating protecting device of the invention.Such as Fig. 5 institute
Show, which includes complete machine current detection module 51, protective current detection module 52 and failure protection module 53.Implement at one
In example, complete machine current detection module 51 includes: power-on self-test detection unit 511, for powering in air conditioner, is in self-test mould
Formula stops all loads of air-conditioning, is measured in real time within the T1 time to the complete machine electric current of air-conditioning；Detection unit after electric heating
512, it is used in air conditioner operational process, after PTC electric heating stops, in the case where air-conditioning is run without high power load,
The complete machine electric current of air-conditioning is measured in real time；Electric heating starts detection unit 513, for starting total relay in PTC electric heating
After device is attracted, the complete machine electric current of air-conditioning is measured in real time within the T8 time.Wherein, 0 second < T1 < 120 second, 0 second < T8 < 120
Second.
In above-described embodiment, PTC electrical heating controller relay can effectively be detected by relay contact adhesion protected mode
Contact adhesion of the device under various situations, hence into fault protection scheme, air-conditioning carries out warning reminding client progress into one
Step processing utmostly reduces the economic asset loss of user, protect machine and user using safe.
In one embodiment, failure protection module 53 includes: fault cues unit 531, for prompting the user with failure；
Security protection unit 532 forces inner blower operation for stopping all high power load work.
Air conditioner electric heating protecting device in the embodiment of the present invention can respectively by various processors, chip, calculate equipment or
Controller is realized, is described below with reference to Fig. 6.
Fig. 6 shows the structural schematic diagram of one embodiment of the controller for air-conditioning electric heater frost protection of the invention.Such as
Shown in Fig. 6, the device 60 of the embodiment includes: memory 610 and the processor 620 for being coupled to the memory 610, processor
620 are configured as being executed the air conditioner electric in the present invention in any one embodiment based on the instruction being stored in memory 610 and being added
Heat protection method.
Wherein, memory 610 is such as may include system storage, fixed non-volatile memory medium.System storage
Device is for example stored with operating system, application program, Boot loader (Boot Loader), database and other programs etc..
Those skilled in the art should be understood that the embodiment of the present invention can provide as method, system or computer journey
Sequence product.Therefore, complete hardware embodiment, complete software embodiment or combining software and hardware aspects can be used in the present invention
The form of embodiment.Moreover, it wherein includes the calculating of computer usable program code that the present invention, which can be used in one or more,
Machine can use the meter implemented in non-transient storage medium (including but not limited to magnetic disk storage, CD-ROM, optical memory etc.)
The form of calculation machine program product.
The present invention be referring to according to the method for the embodiment of the present invention, the process of equipment (system) and computer program product
Figure and/or block diagram describe.It is interpreted as to be realized by computer program instructions each in flowchart and/or the block diagram
The combination of process and/or box in process and/or box and flowchart and/or the block diagram.It can provide these computer journeys
Sequence instruct to general purpose computer, special purpose computer, Embedded Processor or other programmable data processing devices processor with
A machine is generated, so that the instruction generation executed by computer or the processor of other programmable data processing devices is used for
Realize the dress for the function of specifying in one or more flows of the flowchart and/or one or more blocks of the block diagram
It sets.
These computer program instructions, which may also be stored in, is able to guide computer or other programmable data processing devices with spy
Determine in the computer-readable memory that mode works, so that it includes referring to that instruction stored in the computer readable memory, which generates,
Enable the manufacture of device, the command device realize in one box of one or more flows of the flowchart and/or block diagram or
The function of being specified in multiple boxes.
These computer program instructions also can be loaded onto a computer or other programmable data processing device, so that counting
Series of operation steps are executed on calculation machine or other programmable devices to generate computer implemented processing, thus in computer or
The instruction executed on other programmable devices is provided for realizing in one or more flows of the flowchart and/or block diagram one
The step of function of being specified in a box or multiple boxes.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all in spirit of the invention and
Within principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (12)
1. a kind of air conditioner electric heating protection method characterized by comprising
The complete machine electric current of air-conditioning is measured in real time；
If the complete machine electric current is more than the first current value and lasting first time threshold, electric current is examined under starting protection mode
It surveys；
If detection electric current is more than the second current value and lasting second time threshold in timing under protected mode, it is determined that electricity
Computer heating control relay contact adhesion executes error protection；
The complete machine electric current to air-conditioning is measured in real time including at least one of following manner:
Air conditioner powers on, and is in Auto-Sensing Mode, stops the load of air-conditioning, carries out within the T1 time to the complete machine electric current of air-conditioning real
When detect；
And
After electric heating stops in air conditioner operational process, in the case where air-conditioning is run without high power load, to air-conditioning
Complete machine electric current is measured in real time；
And
After electric heating starts total relay actuation, the complete machine electric current of air-conditioning is measured in real time within the T8 time.
2. the method according to claim 1, wherein 0 second < T1 < 120 second, 0 second < T8 < 120 second.
3. method according to claim 1 or 2, which is characterized in that the first time threshold is less than or equal to 120 seconds, institute
Second time threshold is stated less than or equal to 120 seconds, the timing is less than or equal to 300 seconds, first current value be greater than 0A and
Less than 8A, second current value is greater than 0A and is less than 8A.
4. the method according to claim 1, wherein the execution error protection includes:
Prompt failure；
And/or
Stop all high power load work, forces inner blower operation.
5. method according to claim 1,2 or 4, which is characterized in that the air-conditioning passes through posive temperature coefficient thermistor
PTC electric heater unit is electrically heated.
6. a kind of air conditioner electric heating protecting device characterized by comprising
Complete machine current detection module is measured in real time for the complete machine electric current to air-conditioning, if the complete machine electric current is more than the
One current value and lasting first time threshold then send protected mode current detecting message；
Protective current detection module starts for receiving the protected mode current detecting message from complete machine current detection module
Current detecting under protected mode；If detection electric current is more than the second current value and continues second in timing under protected mode
Between threshold value, it is determined that electric heating control relay contact adhesion, send failure message；
Failure protection module executes error protection for receiving the failure message from the protective current detection module；
The complete machine current detection module includes at least one of following detection unit:
Power-on self-test detection unit is in Auto-Sensing Mode, stops all loads of air-conditioning, in T1 for powering in air conditioner
The complete machine electric current of air-conditioning is measured in real time in time；
And
Detection unit after electric heating is used in air conditioner operational process, after electric heating stops, in air-conditioning without high power load
In the case where operation, the complete machine electric current of air-conditioning is measured in real time；
And
Electric heating starts detection unit, is used for after electric heating starts total relay actuation, to the complete machine of air-conditioning within the T8 time
Electric current is measured in real time.
7. device according to claim 6, which is characterized in that 0 second < T1 < 120 second, 0 second < T8 < 120 second.
8. device according to claim 6 or 7, which is characterized in that the first time threshold is less than or equal to 120 seconds, institute
Second time threshold is stated less than or equal to 120 seconds, the timing is less than or equal to 300 seconds, first current value be greater than 0A and
Less than 8A, second current value is greater than 0A and is less than 8A.
9. device according to claim 6, which is characterized in that the failure protection module includes:
Fault cues unit, for prompting the user with failure；
And/or
Security protection unit forces inner blower operation for stopping all high power load work.
10. according to device described in claim 6,7 or 9, which is characterized in that the electric heating assembly of the air-conditioning is positive temperature system
Number thermistor PTC electric heater unit.
11. a kind of air-conditioning characterized by comprising
Electric heater unit；
Electric heating control relay；With
Air conditioner electric heating protecting device as described in any one of claim 6 to 10.
12. a kind of air conditioner electric heating protecting device characterized by comprising
Memory；And
It is coupled to the processor of the memory, the processor is configured to based on the finger being stored in the memory devices
It enables, executes the air conditioner electric heating protection method as described in any one of claims 1 to 5.
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| CN201610919846.4A CN106440278B (en) | 2016-10-21 | 2016-10-21 | Air-conditioning and air conditioner electric heating protection method, device |
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| CN201610919846.4A CN106440278B (en) | 2016-10-21 | 2016-10-21 | Air-conditioning and air conditioner electric heating protection method, device |
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| CN111929487A (en) * | 2020-08-12 | 2020-11-13 | 珠海格力电器股份有限公司 | Fault detection device and fault detection method |
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| CN106440278A (en) | 2017-02-22 |
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