CN102331066A - 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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- CN102331066A CN102331066A CN201110145117A CN201110145117A CN102331066A CN 102331066 A CN102331066 A CN 102331066A CN 201110145117 A CN201110145117 A CN 201110145117A CN 201110145117 A CN201110145117 A CN 201110145117A CN 102331066 A CN102331066 A CN 102331066A
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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 constitute 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 carry out the unit debugging, normal to guarantee the operation of combined air conditioners unit, and satisfy the air-conditioned room requirement.
But in actual debug process, indoor and outdoor machine often takes place 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:
Three core connections (GND, A and B) between chamber inside/outside machine and the indoor set be connected do not adopt producer to dispatch from the factory before the special-purpose plug of configuration, but special-purpose plug is cut off, buy three core connections voluntarily and connect; Like this, the connection that often occurs between the indoor set is not connected according to GND, A and the B line preface of three core connections correspondingly, but three line preface misconnection; Or three line prefaces of the three core connections misconnection between off-premises station and the indoor set.
2. though three core connections between chamber inside/outside machine connection and the indoor set connect the special-purpose plug provide according to producer and 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 first indoor set connection connector being attached thereto of off-premises station do not patch firmly, and off-premises station and indoor set communication failure occur.
3. be connected under the reliable premise 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 automatically controlled plate of indoor set 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 between subsidiary connection plug and the connection combination hub on the automatically controlled plate on the automatically controlled plate of indoor set looseningly perhaps coming off, 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 automatically controlled plate of indoor set 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 automatically controlled plate of off-premises station, does not patch reliably on outdoor automatically controlled plate, also the indoor and outdoor machine communication failure can occur.
9. it is firm that the connection that attaches on the automatically controlled plate of off-premises station patches, but the connection on the plug has disconnection, also can cause the indoor and outdoor communication failure.
Can know that by the above reason of indoor and outdoor communication failure that causes failure cause is numerous, the workload of simple investigation to above-mentioned several kinds of failure causes, affirmation is just very big; Also will not know under the prerequisite concrete which platform machine breaks down, will investigate one by one hundreds of platform indoor set to 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 "; Can failure cause be divided into two big types: the first kind is the communication failure (reason 3) that the address of indoor unit conflict causes, and second type is the communication failure (reason 1,2,4,5,6,7,8 and 9) that the hardware problem relevant with connection causes; Failure cause to different is investigated, and 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), confirm then whether failure cause is that the conflict of first kind address of indoor unit causes if the communication that detects between indoor set and the off-premises station through step (1) is normal; Get rid of if then carry out fault, if not then failure cause is because second type of fault that hardware problem causes changes further investigation of step (3) this moment over to;
(3) fault that is caused by second type of hardware problem is investigated: take " dichotomy " to judge that which platform indoor set or which platform indoor set communication are connected with problem;
(4) investigate the indoor set that the communication problem occurs through " dichotomy " after, according to causing several kinds of reasons of fault to check, fix a breakdown then, make 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: break off 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 are then checked 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 through step (1) is normal; The indoor set connection that then step (1) is broken connects again; Confirm then whether failure cause is that the conflict of first kind address of indoor unit causes: 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 is reset, 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 second type of fault that hardware problem causes changes further investigation of step (3) this moment over to;
(3) fault that is caused by second type of hardware problem is investigated; Take " dichotomy " to judge that which platform indoor set or which platform indoor set communication are connected with problem: to confirm the total platform number of indoor set earlier; Taking " dichotomy " promptly to choose sequence number is that (" dichotomy " here is not the proper dichotomy of mathematics for the indoor set of total platform several 1/2 (being the half the of total platform number); Such as if total platform number is an odd number, can adopt that half is an odd number, second half is that the dichotomy of even number is also passable; If total platform number is an even number, then directly be divided into equal two halves platform number just can), the connection of its indoor set is at the back broken off 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 platform several 1/2 connects no problem for sequence number, and problematic is that sequence number is the later indoor set of total platform several 1/2; Otherwise sequence number is the indoor set existing problems before total platform several 1/2;
If sequence number is that the indoor set communication before total platform several 1/2 is normal, then the indoor set connection that breaks off is connected again, choose sequence number and be 3/4 indoor set of total platform number, indoor set connection of its back is broken off from this indoor set; If the communication of this moment between the indoor and outdoor machine recovers normal, then sequence number be total platform number 3/4 before the indoor set connection connect no problemly, problematic is that sequence number is 3/4 a later indoor set of total platform number; Otherwise, sequence number be after total platform several 1/2 with sequence number be total platform number 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 the indoor set that the communication problem occurs through " dichotomy " after, according to causing several kinds of reasons of fault to check, fix a breakdown then, make 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, the fault that investigation address code conflict earlier causes, and being provided with of address code is easy and quick, thus make first kind fault easily get rid of or reparation.
2. the present invention is directed to second type hardware problem; Adopt " dichotomy " to carry out the subregion investigation; Rather than investigate one by one to 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 simple more, reliable, investigation speed is fast, efficient is high.
The specific embodiment
Through embodiment the present invention is described in further detail below, but the present invention not only is confined to following examples.
So that one to drag the VRV combined air conditioners unit of 84 (indoor set is the smallpox machine) be example in actual certain Air-conditioning Engineering, the arrange distinguish method of VRV combined air conditioners unit indoor and outdoor communication failure point of the present invention is done further explain below.
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 smallpox machine between communication whether normal.
Method is: break off first smallpox machine and the connection between the smallpox machine thereafter, indoor and outdoor communication this moment recovers normal, 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, and whether first failure judgement reason is owing to the conflict of smallpox machine address code causes.
Method is: under the prerequisite that indoor set powers on; Adopt remote controller again the smallpox machine to be carried out the address code setting; Position on smallpox machine position in kind and the Air-conditioning Engineering design drawing is mapped, indoor smallpox machine address code is set, as address 1, address 2, address 3 ..., address 84.After indoor smallpox machine address code was reset, the indoor and outdoor communication still had problems, then can confirm 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 that indoor smallpox machine of which platform or the communication of the indoor smallpox machine of which platform are connected with problem.
Method is: choosing address code and be 42 indoor smallpox machine, is that the connection of 43 indoor smallpox machine is that 42 indoor smallpox machine breaks off from address code with address code, and then the smallpox machine connection of address code 43 to 84 has all broken off.Communication between the indoor and outdoor machine at this moment recovers normal, can judge that then the smallpox machine connection between the address code 43 to 84 is connected with problem.
Choose address code and be 63 smallpox machine, the smallpox machine connection of the address code 64 smallpox machine from address code 63 is broken off.Communication between the indoor and outdoor machine is not at this moment still replied normal, then can judge the smallpox machine connection existing problems between the address code 64 to 84.
Carry out " dichotomy " investigation in this manner,, find that finally address code is that the indoor automatically controlled plate of 81 smallpox machine has problem, causes communication failure through after 7 investigations.After investigating out reason, change the automatically controlled plate of indoor set again, it is normal that the indoor and outdoor machine communication recovers.
If adopt 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 improved the malfunction elimination operating efficiency greatly.
Claims (4)
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 big types: the first kind is the communication failure that the address of indoor unit conflict causes, and second type is the communication failure that the hardware problem relevant with connection causes; Failure cause to different is investigated, and 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), confirm then whether failure cause is that the conflict of first kind address of indoor unit causes if the communication that detects between indoor set and the off-premises station through step (1) is normal; Get rid of if then carry out fault, if not then failure cause is because second type of fault that hardware problem causes changes further investigation of step (3) this moment over to;
(3) fault that is caused by second type of hardware problem is investigated: take " dichotomy " to judge that which platform indoor set or which platform indoor set communication are connected with problem;
(4) investigate the indoor set that the communication problem occurs through " dichotomy " after, according to causing several kinds of reasons of fault to check, fix a breakdown then, make 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: said step (1) specific operation process is: break off 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 are then checked 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 said step (2) is: if the communication that detects between the indoor unit and outdoor unit through step (1) is normal; The indoor set connection that then step (1) is broken connects again; Confirm then whether failure cause is that the conflict of first kind address of indoor unit causes; Promptly 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 is reset, 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 second type of fault that hardware problem causes changes further investigation of step (3) this moment over to.
4. 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 said step (3) is: confirm the total platform number of indoor set earlier; Take dichotomy promptly to choose the indoor set that sequence number is total platform several 1/2, the connection of indoor set of its back is broken off 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 platform several 1/2 connects no problem for sequence number, and problematic is that sequence number is the later indoor set of total platform several 1/2; Otherwise sequence number is the indoor set existing problems before total platform several 1/2;
If sequence number is that the indoor set communication before total platform several 1/2 is normal, then the indoor set connection that breaks off is connected again, choose sequence number and be 3/4 indoor set of total platform number, indoor set connection of its back is broken off from this indoor set; If the communication of this moment between the indoor and outdoor machine recovers normal, then sequence number be total platform number 3/4 before the indoor set connection connect no problemly, problematic is that sequence number is 3/4 a later indoor set of total platform number; Otherwise, sequence number be after total platform several 1/2 with sequence number be total platform number 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.
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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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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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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 acquisition device of air conditioning system and air conditioning system |
| CN107869822A (en) * | 2017-11-08 | 2018-04-03 | 绵阳美菱软件技术有限公司 | A kind of multi-gang air-conditioner monitoring method, monitoring system and outdoor host computer |
| 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 |
| CN109682136A (en) * | 2019-01-27 | 2019-04-26 | 珠海格力电器股份有限公司 | Heat recovery multi-split air conditioner and vacuumizing method thereof |
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| 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105091214A (en) * | 2015-07-13 | 2015-11-25 | 珠海格力电器股份有限公司 | Fault acquisition device of air conditioning system and air conditioning system |
| CN107869822A (en) * | 2017-11-08 | 2018-04-03 | 绵阳美菱软件技术有限公司 | A kind of multi-gang air-conditioner monitoring method, monitoring system and outdoor host computer |
| 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 |
| CN109682136A (en) * | 2019-01-27 | 2019-04-26 | 珠海格力电器股份有限公司 | Heat recovery multi-split air conditioner and vacuumizing method thereof |
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| CN102331066B (en) | 2013-05-01 |
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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. |