CN102331066B - Method for investigating indoor and outdoor communication fault points of VRV (Vacuum Reducer Valve) multi-connected air-condition unit - Google Patents
Method for investigating indoor and outdoor communication fault points of VRV (Vacuum Reducer Valve) multi-connected air-condition unit Download PDFInfo
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Abstract
The invention discloses a method for investigating indoor and outdoor communication fault points of a VRV (Vacuum Reducer Valve) multi-connected air-condition unit. The method comprises the following steps: when indoor and outdoor communication fault occurs, firstly checking and determining whether the communication between an outdoor machine and a first indoor machine is normal; if so, determining whether the fault is caused by address conflict of the first category of indoor machines; if so, carrying out fault clearance, if not, determining that the fault is caused by the problem of the second category of hardware, and going to the next investigating step at the time; investigating the fault caused by the problem of the second category of hardware: judging the communication connection problem of one indoor machine or several indoor machines by using a dichotomy; checking according to several fault causes after the communication problem of the indoor machine is investigated by using the dichotomy; and then removing the fault to ensure that the communication between the outdoor machine and the indoor machine gets right. The invention has the advantages of simplicity and convenience, reliability, quick investigating speed and high working efficiency.
Description
Technical field
The present invention relates to a kind of VRV air-conditioning system technical field, specifically is a kind of arrange distinguish method of VRV combined air conditioners unit indoor and outdoor communication failure point.
Background technology
Present VRV (Varied Refrigerant Volume) combined air conditioners unit is to drag many indoor units to consist of by an outdoor unit, one-to-one rotor-type compressor combined air conditioners unit from little ability, drag 100 even the large-scale screw compressor combined air conditioners unit of hundreds of platform indoor set to one, whole system is complicated and huge.After the installation of VRV combined air conditioners unit, need to carry out the unit debugging, with assurance combined air conditioners unit normal operation, and satisfy the air-conditioned room requirement.
But in actual debug process, indoor and outdoor machine often occurs does not have communication, and line control machine or monitoring software report the phenomenon of indoor and outdoor communication failure.In general, the indoor and outdoor machine communication failure of appearance mainly contains following reason and causes:
1. (producer's Special inserting head of front configuration that dispatches from the factory is not adopted in GND, the A connection of being connected with B to three core connections between chamber inside/outside machine and the indoor set, but the Special inserting head is cut off, and buys voluntarily three core connections and connects; Like this, the connection that often occurs between the indoor set does not connect less than being connected with B line order according to GND, the A of three core connections, but three line order misconnection; Or three line orders of the three core connections misconnection between off-premises station and the indoor set.
2. although three core connections between chamber inside/outside machine connection and the indoor set Special inserting head provide according to producer are provided connect, but wherein the plug of certain indoor set does not patch firmly, occurs loosening and causes the indoor set communication behind this indoor set not gone up; Perhaps the First indoor set connection connector that is attached thereto of off-premises station does not patch firmly, and off-premises station and indoor set communication failure occur.
3. be connected under the reliable prerequisite with connection between all indoor sets at off-premises station, if there is the address code of two or many indoor sets identical in numerous indoor set, address conflict will occur, this also can cause communication failure.
4. the indoor set electric-controlled plate breaks down, also can cause this indoor set with and subsequent indoor set and off-premises station communication do not go up, communication failure appears.
5. occur for a certain reason becoming flexible or coming off between subsidiary connection plug and the connection combination hub on the electric-controlled plate on the indoor set electric-controlled plate, also can occur this indoor set with and subsequent indoor set and off-premises station communication do not go up, communication failure appears.
6. it is firm that the connection plug that attaches on the indoor set electric-controlled plate connects, but one even two or three connections disconnections are arranged in three heart yearns that are connected with connector, also can occur this indoor set with and subsequent indoor set and off-premises station communication do not go up, communication failure appears.
7. the outdoor machine system control panel breaks down, and then communication failure appears in the indoor and outdoor chance.
8. subsidiary connection comes off on the off-premises station electric-controlled plate, does not patch reliably on outdoor electric-controlled plate, also the indoor and outdoor machine communication failure can occur.
9. it is firm that the connection that attaches on the off-premises station electric-controlled plate patches, but the connection on the plug has disconnection, also can cause the indoor and outdoor communication failure.
By the above reason that causes the indoor and outdoor communication failure as can be known, failure cause is numerous, and the workload to the investigation of above-mentioned several failure causes, affirmation is just very large merely; Also will not know under the prerequisite concrete which platform machine breaks down, will investigate one by one hundreds of platform indoor set for the whole system that hundreds of platform indoor set is particularly arranged still more, its workload is heavy especially.Therefore, it is very necessary exploring and a kind of arrange distinguish method easy, reliable communication failure is provided, also be increase work efficiency necessary.
Summary of the invention
The present invention is directed to the above-mentioned deficiency of prior art, provide that a kind of easy, reliable, investigation speed is fast, the arrange distinguish method of the VRV combined air conditioners unit indoor and outdoor communication failure point of high efficiency.
In order to solve the problems of the technologies described above, technical scheme of the present invention is: a kind of arrange distinguish method of VRV combined air conditioners unit indoor and outdoor communication failure point: according to 9 kinds of failure causes enumerating in " background technology ", failure cause can be divided into two large classes: the first kind is the communication failure (reason 3) that the address of indoor unit conflict causes, and Equations of The Second Kind is the communication failure (reason 1,2,4,5,6,7,8 and 9) that the hardware problem relevant with connection causes; Investigate for different failure causes, concrete arrange distinguish method may further comprise the steps:
(1) when the indoor and outdoor communication failure occurring, at first check and definite off-premises station and First indoor set between communication whether normal;
(2) if the communication that detects between indoor set and the off-premises station by step (1) is normal, then determine failure cause whether the conflict of first kind address of indoor unit cause; Get rid of if then carry out fault, if not then failure cause is because the fault that the Equations of The Second Kind hardware problem causes changes further investigation of step (3) this moment over to;
(3) fault that is caused by the Equations of The Second Kind hardware problem is investigated: take " dichotomy " to judge which platform indoor set or which platform indoor set communication are connected with problem;
(4) investigate behind the indoor set that Communication occurs by " dichotomy ", according to causing several reasons of fault to check, then fix a breakdown, so that the communication between the indoor and outdoor machine recovers normal.
The arrange distinguish method of the above-mentioned VRV combined air conditioners of the present invention unit indoor and outdoor communication failure point, complete arrange distinguish method may further comprise the steps:
(1) when the indoor and outdoor communication failure occurring, at first check and definite off-premises station and First indoor set between communication whether normal: disconnect First indoor set and the connection of indoor set thereafter, if indoor and outdoor communication this moment recovers normal, then the communication between off-premises station and the indoor set is normal; Otherwise the connection existing problems between the indoor and outdoor then check the connectivity problem of connection, fix a breakdown, and are normal to guarantee the communication between the indoor unit and outdoor unit;
(2) if the communication that detects between the indoor unit and outdoor unit by step (1) is normal, the indoor set connection that then step (1) is broken connects again, then determine failure cause whether the conflict of first kind address of indoor unit cause: under the prerequisite that indoor set powers on, adopt remote controller or line control machine again indoor set to be carried out the address code setting; After if address code resets, it is normal that the indoor and outdoor communication recovers, and then the failure cause correct judgment is the communication failure that the conflict of first kind address of indoor unit causes; Otherwise failure cause is because the fault that the Equations of The Second Kind hardware problem causes changes further investigation of step (3) this moment over to;
(3) fault that is caused by the Equations of The Second Kind hardware problem is investigated, take " dichotomy " to judge which platform indoor set or which platform indoor set communication are connected with problem: to determine first the total number of units of indoor set, taking " dichotomy " namely to choose sequence number is that (" dichotomy " herein is not the proper dichotomy of mathematics for the indoor set of total number of units 1/2 (be total number of units half), if be odd number such as total number of units, can adopt that half is odd number, second half is that the dichotomy of even number is also passable; If total number of units is even number, then directly be divided into equal two halves number of units just can), the connection of the indoor set of its back is disconnected from this indoor set; If the communication of this moment between the indoor and outdoor machine recovers normal, then to be that indoor set connection before total number of units 1/2 connects no problem for sequence number, and problematic is that sequence number is the later indoor set of total number of units 1/2; Otherwise sequence number is the indoor set existing problems before total number of units 1/2;
If sequence number is that the indoor set communication before the total number of units 1/2 is normal, then the indoor set connection that disconnects is connected again, choose sequence number and be 3/4 indoor set of total number of units, the indoor set connection of its back is disconnected from this indoor set; If the communication of this moment between the indoor and outdoor machine recovers normal, then sequence number be total number of units 3/4 before the indoor set connection connect no problemly, problematic is that sequence number is 3/4 later indoor set of total number of units; Otherwise, sequence number be after the total number of units 1/2 and sequence number be total number of units 3/4 before indoor set have problems;
So repeatedly, adopt the principle of " dichotomy ", investigate out that or that several the indoor sets that break down, change step (4) over to and carry out concrete failure cause and judge;
(4) investigate behind the indoor set that Communication occurs by " dichotomy ", according to causing several reasons of fault to check, then fix a breakdown, so that the communication between the indoor and outdoor machine recovers normal.
The advantage of arrange distinguish method provided by the invention is:
1. the present invention classifies failure cause, investigates first the fault that the address code conflict causes, and arranging of address code is easy and quick, thus so that easily eliminating or reparation of first kind fault.
2. the present invention is directed to the hardware problem of Equations of The Second Kind, adopt " dichotomy " to carry out the subregion investigation, rather than investigate one by one for many indoor sets, thereby dwindled the investigation scope, simplified the investigation flow process, avoided investigating the heavy shortcoming of work that causes by platform, operation is more simple, reliable, investigation speed is fast, efficient is high.
The specific embodiment
Below by embodiment the present invention is described in further detail, but the present invention not only is confined to following examples.
The below's VRV combined air conditioners unit that drags 84 (indoor set is as ceiling machines) in actual certain Air-conditioning Engineering is described in further detail the arrange distinguish method of VRV combined air conditioners unit indoor and outdoor communication failure point of the present invention as example.
Of the present invention one drags the arrange distinguish method of 84 VRV combined air conditioners unit indoor and outdoor communication failure point, may further comprise the steps:
(1) when the indoor and outdoor communication failure occurring, at first check and definite off-premises station and First ceiling machine between communication whether normal.
Method is: disconnect First ceiling machine and the connection between the ceiling machine thereafter, this moment, the indoor and outdoor communication recovered normally, and then the communication between off-premises station and the indoor set is normal;
(2) the indoor set connection that step (1) is broken connects again, first failure judgement reason whether since the conflict of ceiling machine address code cause.
Method is: under the prerequisite that indoor set powers on, adopt remote controller again ceiling machine to be carried out the address code setting, position on ceiling machine position in kind and the Air Conditioning Design figure is mapped, indoor ceiling machine address code is set, as address 1, address 2, address 3 ..., address 84.After indoor ceiling machine address code reset, the indoor and outdoor communication still had problems, then can determine not to be owing to the address code reason, but owing to the reason of hardware aspect causes communication failure;
(3). take " dichotomy " to judge which platform indoor ceiling machine or which platform indoor ceiling machine communication are connected with problem.
Method is: choosing address code and be 42 indoor ceiling machine, is that the connection of 43 indoor ceiling machine is that 42 indoor ceiling machine disconnects from address code with address code, and then the ceiling machine connection of address code 43 to 84 has all disconnected.The at this moment communication between the indoor and outdoor machine recovers normal, can judge that then the ceiling machine connection between the address code 43 to 84 is connected with problem.
Choose address code and be 63 ceiling machine, the ceiling machine connection of address code 64 ceiling machine from address code 63 is disconnected.The at this moment communication between the indoor and outdoor machine is not still replied normal, then can judge the ceiling machine connection existing problems between the address code 64 to 84.
Carry out in this manner " dichotomy " investigation, through after 7 investigations, find that finally address code is that the indoor electric-controlled plate of 81 ceiling machine has problem, causes communication failure.After investigating out reason, again change the indoor set electric-controlled plate, it is normal that the indoor and outdoor machine communication recovers.
If adopt the method by the platform investigation, to carry out 80 times operation at least, workload is very heavy, and adopts method provided by the invention, as long as 7 times just find the cause, has greatly improved the malfunction elimination operating efficiency.
Claims (3)
1. the arrange distinguish method of a VRV combined air conditioners unit indoor and outdoor communication failure point: it is characterized in that: failure cause is divided into two large classes: the first kind is the communication failure that the address of indoor unit conflict causes, and Equations of The Second Kind is the communication failure that the hardware problem relevant with connection causes; Investigate for different failure causes, concrete arrange distinguish method may further comprise the steps:
(1) when the indoor and outdoor communication failure occurring, at first check and definite off-premises station and First indoor set between communication whether normal;
(2) if the communication that detects between indoor set and the off-premises station by step (1) is normal, then determine failure cause whether the conflict of first kind address of indoor unit cause; Get rid of if then carry out fault, if not then failure cause is because the fault that the Equations of The Second Kind hardware problem causes changes further investigation of step (3) this moment over to;
(3) fault that is caused by the Equations of The Second Kind hardware problem is investigated: take " dichotomy " to judge which platform indoor set or which platform indoor set communication are connected with problem;
Specific operation process is: determine first the total number of units of indoor set, take dichotomy namely to choose the indoor set that sequence number is total number of units 1/2, the connection of the indoor set of its back is disconnected from this indoor set; If the communication of this moment between the indoor and outdoor machine recovers normal, then to be that indoor set connection before total number of units 1/2 connects no problem for sequence number, and problematic is that sequence number is the later indoor set of total number of units 1/2; Otherwise sequence number is the indoor set existing problems before total number of units 1/2;
If sequence number is that the indoor set communication before the total number of units 1/2 is normal, then the indoor set connection that disconnects is connected again, choose sequence number and be 3/4 indoor set of total number of units, the indoor set connection of its back is disconnected from this indoor set; If the communication of this moment between the indoor and outdoor machine recovers normal, then sequence number be total number of units 3/4 before the indoor set connection connect no problemly, problematic is that sequence number is 3/4 later indoor set of total number of units; Otherwise, sequence number be after the total number of units 1/2 and sequence number be total number of units 3/4 before indoor set have problems;
So repeatedly, adopt the principle of " dichotomy ", investigate out that or that several the indoor sets that break down;
(4) investigate behind the indoor set that Communication occurs by " dichotomy ", according to causing several reasons of fault to check, then fix a breakdown, so that the communication between the indoor and outdoor machine recovers normal.
2. the arrange distinguish method of VRV combined air conditioners unit indoor and outdoor communication failure point according to claim 1: it is characterized in that: described step (1) specific operation process is: disconnect First indoor set and the connection of indoor set thereafter, if indoor and outdoor communication this moment recovers normal, then the communication between off-premises station and the indoor set is normal; Otherwise the connection existing problems between the indoor and outdoor then check the connectivity problem of connection, fix a breakdown, and are normal to guarantee the communication between the indoor unit and outdoor unit.
3. the arrange distinguish method of VRV combined air conditioners unit indoor and outdoor communication failure point according to claim 1: it is characterized in that: the specific operation process of described step (2) is: if the communication that detects between the indoor unit and outdoor unit by step (1) is normal, the indoor set connection that then step (1) is broken connects again, then determine failure cause whether the conflict of first kind address of indoor unit cause, namely under the prerequisite that indoor set powers on, adopt remote controller or line control machine again indoor set to be carried out the address code setting; After if address code resets, it is normal that the indoor and outdoor communication recovers, and then the failure cause correct judgment is the communication failure that the conflict of first kind address of indoor unit causes; Otherwise failure cause is because the fault that the Equations of The Second Kind hardware problem causes changes further investigation of step (3) this moment over to.
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| CN 201110145117 CN102331066B (en) | 2011-05-25 | 2011-05-25 | Method for investigating indoor and outdoor communication fault points of VRV (Vacuum Reducer Valve) multi-connected air-condition unit |
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| CN 201110145117 CN102331066B (en) | 2011-05-25 | 2011-05-25 | Method for investigating indoor and outdoor communication fault points of VRV (Vacuum Reducer Valve) multi-connected air-condition unit |
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| CN105091214A (en) * | 2015-07-13 | 2015-11-25 | 珠海格力电器股份有限公司 | Fault collecting device of air conditioner system and air conditioner system |
| CN107869822B (en) * | 2017-11-08 | 2020-10-23 | 四川虹美智能科技有限公司 | Multi-split air conditioner monitoring method and system and outdoor host |
| CN108984357A (en) * | 2018-07-16 | 2018-12-11 | 郑州云海信息技术有限公司 | A kind of hard disk localization method, device and computer readable storage medium |
| CN109682136B (en) * | 2019-01-27 | 2019-12-03 | 珠海格力电器股份有限公司 | Heat-reclamation multi-compressors and its method vacuumized |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6755038B2 (en) * | 2002-06-12 | 2004-06-29 | Lg Electronics Inc. | Multi-unit air conditioner and method for controlling the same |
| CN101571327A (en) * | 2009-06-05 | 2009-11-04 | 江苏春兰冷冻设备有限公司 | Multi-connected heat pump air-conditioning unit parallelly connected by outdoor units and control method |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6755038B2 (en) * | 2002-06-12 | 2004-06-29 | Lg Electronics Inc. | Multi-unit air conditioner and method for controlling the same |
| CN101571327A (en) * | 2009-06-05 | 2009-11-04 | 江苏春兰冷冻设备有限公司 | Multi-connected heat pump air-conditioning unit parallelly connected by outdoor units and control method |
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Address after: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee after: NINGBO AUX ELECTRIC CO., LTD. Address before: 315191 Zhejiang city of Ningbo province Jiangshan town Yinzhou District Mingguang Road No. 1166 Patentee before: Ningbo AUX Electric Co., Ltd. |