CN102230662A - Method for judging fault of direct-current frequency conversion variable refrigerant volume (VRV) air conditioning module - Google Patents
Method for judging fault of direct-current frequency conversion variable refrigerant volume (VRV) air conditioning module Download PDFInfo
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Abstract
The invention provides a method for judging a fault of a direct-current frequency conversion variable refrigerant volume (VRV) air conditioning module. By the method for judging the fault of the direct-current frequency conversion VRV air conditioning module, a specific fault reason can be determined when the direct-current frequency conversion VRV air conditioning module fails and a maintainer can check the fault reasons conveniently, so the maintainer can maintain the failed direct-current frequency conversion VRV air conditioning module conveniently and rationally; therefore, a phenomenon that an electric control system assembly of the whole outdoor machine is replaced without destination and waste is reduced greatly.
Description
Technical field:
The present invention relates to field of air conditioning, specifically is a kind of DC frequency-changing VRV Climate Control Module failure judgment method.
Background technology
DC frequency-changing VRV air-conditioning product in use because a variety of causes, some faults all might take place in the VRV air-conditioning, such as module failure.At present, when module failure appears in DC frequency-changing VRV air-conditioning, the field maintenance personnel can't judge the reason of DC frequency-changing VRV air-conditioning generation module failure, therefore can't handle it exactly, often think the problem of whole off-premises station electric-control system assembly, and the electric-control system assembly of whole off-premises station is all changed the defective of this way:
The one, if failure cause is not outdoor electric-control system assembly,, can not solve failure problems even change outdoor electric-control system assembly.
The 2nd, A.C. contactor that outdoor electric-control system assembly is used by independently refrigeration system control panel, driven compressor control panel, capacitor board, reactor and outdoor motor electric capacity and compressor control etc., these all can break.Therefore, if owing to be the module protection fault that driven compressor control panel problem causes, and change whole outdoor electric-control system assembly, obviously be unreasonable and suitable the waste.
Therefore, be badly in need of a kind of DC frequency-changing VRV Climate Control Module failure judgment method that can the judge module failure cause at present.
Summary of the invention:
The technical problem to be solved in the present invention is, overcomes the defective of prior art, a kind of reason that can the judge module fault is provided, thereby makes the maintenance personal keep in repair convenient, rational DC frequency-changing VRV Climate Control Module failure judgment method.
Technical solution of the present invention is, the invention provides a kind of DC frequency-changing VRV Climate Control Module failure judgment method, and it may further comprise the steps:
(1), if DC frequency-changing VRV air-conditioning generation module failure, measure the resistance of the winding of compressor electric motor earlier, if resistance is zero, then failure cause is the short circuit in winding of compressor electric motor, if resistance is normal, then enters next step;
(2), on the driven compressor module, malfunction indicator lamp is set, and the reason that driver module is broken down is related with the signal type of malfunction indicator lamp, signal according to malfunction indicator lamp judges whether to be the driven compressor module failure then, if driver module fault, then judge the reason of driver module fault according to the signal type of malfunction indicator lamp, if the signal of malfunction indicator lamp shows that the driven compressor module is normal, then enter next step;
(3), be judged as the system failure, detect compressor exhaust temperature T1 and compressor air suction temperature T 2 this moment, if compressor exhaust temperature T1 is than setting delivery temperature A low 10～20 ℃ and compressor air suction temperature T 2 than setting suction temperature B low 5～10 ℃ the time, judge that air conditioner refrigerating dosage is excessive, otherwise, enter next step;
(4), detect the compressor operating electric current I; if I 〉=during compressor protection current value I max; then be judged as the air conditioner refrigerating electric-controlled system fault, described air conditioner refrigerating electric-controlled system fault comprises outdoor heat exchanger fault, indoor electronics expansion throttling valve fault, indoor machine motor or fan blade or blower motor electric capacity fault.
In the step (2), the malfunction indicator lamp that is provided with on the described driven compressor module has two, be respectively a LED lamp, the 2nd LED lamp, the failure cause that driver module breaks down is meant with the signal type of malfunction indicator lamp is related: a LED lamp Chang Liang, when the 2nd LED lamp is glittering, the driven compressor module is normal, when glittering n1 the m time of going out again of a LED lamp is to glimmer one-period or glittering n2 the m time of going out again of the 2nd LED lamp is when glimmering one-period, expression driven compressor module failure; Glittering frequency n 1, n2 and concrete failure cause are related.
Described glittering frequency n 1; n2 is meant with specifically failure cause is related: if n1=1 then is the radiator high temperature protection, if n1=2; then be the radiator sensor fault, if n1=3, IPM protection when then being raising frequency; if n1=4, if IPM protection during then for stable operation is n1=5; IPM protection during then for frequency reducing is if n1=6 then is under-voltage protection; if n1=7 then is an overvoltage protection, if n1=8; then be the indoor communications fault, if n1=9 then is a type wire jumper fault; if n1=10 then is an IPM phase current fault, if n1=11; overcurrent protection when then being raising frequency, if n1=13, overcurrent protection when then being stable operation; if n1=14, if overcurrent protection during then for frequency reducing is n1=15; then for driving protection, if n1=16 then is outdoor communication failure; if n2=1 then is IPM fault/protection, if n2=2; then be the VDC overvoltage/undervoltage, if n2=3 then is the overcurrent protection of compressor phase current; if n2=6 is then for driving protection, if n2=13; then be press phase current fault, if n2=15 then is outer machine communication failure.
Adopt the method for the invention, have the following advantages:
After adopting DC frequency-changing VRV Climate Control Module failure judgment method of the present invention, concrete failure cause in the time of can clearly judging DC frequency-changing VRV air-conditioning generation module failure, the convenient for maintaining personnel investigate processing at failure cause, it is convenient, reasonable that the maintenance personal is keeped in repair, the phenomenon of blindly changing the electric-control system assembly of whole off-premises station before having avoided takes place, and has significantly reduced waste.
The specific embodiment:
The present invention is further detailed explanation below in conjunction with the specific embodiment.
The invention provides a kind of DC frequency-changing VRV Climate Control Module failure judgment method, it may further comprise the steps:
(1), if DC frequency-changing VRV air-conditioning generation module failure, measure the resistance of the winding of compressor electric motor earlier, if resistance is zero, then failure cause is the short circuit in winding of compressor electric motor, if resistance is normal, then enters next step;
The power line that connects on three posts of DC frequency-changeable compressor is pulled up, measure the resistance of three windings of DC frequency-changeable compressor respectively with the resistance grade of universal meter, under the normal condition, three winding deviations are no more than ± and 5%～± 7%, when the resistance that a winding or two windings or three windings are wherein arranged equals zero, the short circuit in winding of compressor.
When if this fault occurring; fault handling method: the cold-producing medium in the system is given off; with the fault DC frequency-changeable compressor; new normal DC frequency-changeable compressor in the replacement; and DC frequency-changeable compressor power line and overload protection wiring connected; after utilizing vavuum pump that refrigeration system is vacuumized, charge the refrigerant amount of cold-producing medium again to the unit requirement.Afterwards, re-power start.
(2), on the driven compressor module, malfunction indicator lamp is set, and the reason that driver module is broken down is related with the signal type of malfunction indicator lamp, signal according to malfunction indicator lamp judges whether to be the driven compressor module failure then, if driver module fault, then judge the reason of driver module fault according to the signal type of malfunction indicator lamp, if the signal of malfunction indicator lamp shows that the driven compressor module is normal, then enter next step;
The malfunction indicator lamp that is provided with on the described driven compressor module has two, be respectively a LED lamp, the 2nd LED lamp, the failure cause that driver module breaks down is meant with the signal type of malfunction indicator lamp is related: Chang Liang such as a LED lamp, when the 2nd LED lamp is glittering, the driven compressor module is normal, when glittering n1 the m time of going out again of a LED lamp is to glimmer one-period or glittering n2 the m time of going out again of the 2nd LED lamp is when glimmering one-period, expression driven compressor module failure; Glittering frequency n 1, n2 and concrete failure cause are related.In the present embodiment, Chang Liang, the 2nd LED lamps such as the one LED lamp went out in 1 second 1 second ground glittering expression driven compressor module normal, dodging in 0.5 second went out for n1 time 3 seconds the one LED lamp again to go out in bright 0.5 second is the one-period flicker, and dodging in 0.5 second went out for n2 time 3 seconds the 2nd LED lamp again to go out in bright 0.5 second is to glimmer one-period.
If n1=1 then is the radiator high temperature protection, if n1=2; then be the radiator sensor fault, if n1=3, IPM protection when then being raising frequency; if n1=4, if IPM protection during then for stable operation is n1=5; IPM protection during then for frequency reducing is if n1=6 then is under-voltage protection; if n1=7 then is an overvoltage protection, if n1=8; then be the indoor communications fault, if n1=9 then is a type wire jumper fault; if n1=10 then is an IPM phase current fault, if n1=11; overcurrent protection when then being raising frequency, if n1=13, overcurrent protection when then being stable operation; if n1=14, if overcurrent protection during then for frequency reducing is n1=15; then for driving protection, if n1=16 then is outdoor communication failure; if n2=1 then is IPM fault/protection, if n2=2; then be the VDC overvoltage/undervoltage, if n2=3 then is the overcurrent protection of compressor phase current; if n2=6 is then for driving protection, if n2=13; then be press phase current fault, if n2=15 then is outer machine communication failure.
When above-mentioned fault occurring, the software that can investigate in the driven compressor module carries out troubleshooting:
A. investigate according to the fault content of enumerating in above-mentioned two forms, investigated all possible causes.After having investigated all possible reason, DC frequency-changeable compressor driver module control panel fault disappears, and then automatically controlled plate and system change over to normally.
B. after all fault contents of having enumerated in having investigated above-mentioned two forms, DC frequency-changeable compressor driver module control panel still shows fault, represents that then the automatically controlled plate of this piece damages the automatically controlled plate that need more renew.After the driver module control panel is finished in replacing, peripheral wiring connected get final product.
(3), be judged as the system failure, detect compressor exhaust temperature T1 and compressor air suction temperature T 2 this moment, if compressor exhaust temperature T1 is than setting delivery temperature A low 10～20 ℃ and compressor air suction temperature T 2 than setting suction temperature B low 5～10 ℃ the time, judge that air conditioner refrigerating dosage is excessive, otherwise, enter next step;
Fault handling method: discharging unnecessary cold-producing medium, is that compressor current is in normal range of operation, and at this moment, compressor air-discharging rises to normal level, and the compressor air suction temperature also is raised to normal level.
(4), detect the compressor operating electric current I; if I 〉=during compressor protection current value I max; then be judged as the air conditioner refrigerating electric-controlled system fault, described air conditioner refrigerating electric-controlled system fault comprises outdoor heat exchanger fault, indoor electronics expansion throttling valve fault, indoor machine motor or fan blade or blower motor electric capacity fault.
When condenser heat exchanger fin surface dirt is gathered a lot; perhaps outdoor fan motor or fan blade damage; perhaps there are foreign matters such as plastic sheeting to cover fin surface; perhaps the space of off-premises station installation is narrow and small; the off-premises station heat radiation is very poor, causes condensation effect very poor, will cause condensing pressure to gather rising; make the compressor operating electric current I gather rising, the module protection fault takes place above protective current value Imax.
Fault handling method: the inspection chamber external heat exchanger, if fin surface accumulates dust too much, then clean fin surface.If the condensation fan motor damages or fan blade damages, then change motor or fan blade.If have foreign matters such as plastic sheeting to cover fin surface, then remove foreign matter.If the off-premises station installation site is unfavorable for heat radiation, then changes the installation site or increase heat transfer space.
When heavy snow seriously covers fin surface and can't remove voluntarily; after air-conditioning is opened operation; outdoor heat exchanger can enter the vicious circle process; the serious frosting of fin surface, even freeze, cause ultra-low pressure to reduce; high pressure and low pressure pressure reduction sharply increase; pressure ratio also sharply increases, and makes the compressor operating electric current I gather rising, above protective current value Imax the module protection fault takes place.
Fault handling method: snow, frost or the ice removal of off-premises station heat exchanger surface are got final product.
When refrigeration mode moves, indoor electric expansion valve orifice union stops up or is stuck, can observe with other normal indoor set from the monitoring software and compare, normal indoor machine evaporation inlet temperature is more than 0 ℃, and fault indoor machine evaporation inlet temperature is lower more than 5 ℃ than normal below 0 ℃.At this moment, system high pressure and low pressure pressure reduction will sharply increase, and the compressor operating electric current I is sharply risen, and above protective current value Imax the module protection fault take place.
Fault handling method: change indoor set electronic expansion valve module.
When heating mode moves, indoor electric expansion valve orifice union stops up or is stuck, can observe with other normal indoor set from the monitoring software and compare, fault indoor machine evaporation inlet temperature and outlet temperature are very nearly the same, and normal indoor machine evaporation inlet temperature and outlet temperature differ at 5 ℃～12 ℃.At this moment, system high pressure and low pressure pressure reduction will sharply increase, and the compressor operating electric current I is sharply risen, and above protective current value Imax the module protection fault take place.
Fault handling method: change indoor set electronic expansion valve module.
When the refrigeration mode operation was singly opened indoor set, indoor motor or fan blade or blower fan capacitance damage were because the heat exchange poor effect; low pressure sharply reduces; cause high-low pressure pressure reduction excessive, make the compressor operating electric current I gather rising, the module protection fault takes place above protective current value Imax.
Fault handling method: change indoor machine motor or fan blade or blower fan electric capacity and get final product.
Claims (3)
1. DC frequency-changing VRV Climate Control Module failure judgment method, it is characterized in that: it may further comprise the steps:
(1), if DC frequency-changing VRV air-conditioning generation module failure, measure the resistance of the winding of compressor electric motor earlier, if resistance is zero, then failure cause is the short circuit in winding of compressor electric motor, if resistance is normal, then enters next step;
(2), on the driven compressor module, malfunction indicator lamp is set, and the reason that driver module is broken down is related with the signal type of malfunction indicator lamp, signal according to malfunction indicator lamp judges whether to be the driven compressor module failure then, if driver module fault, then judge the reason of driver module fault according to the signal type of malfunction indicator lamp, if the signal of malfunction indicator lamp shows that the driven compressor module is normal, then enter next step;
(3), be judged as the system failure, detect compressor exhaust temperature T1 and compressor air suction temperature T 2 this moment, if compressor exhaust temperature T1 is than setting delivery temperature A low 10～20 ℃ and compressor air suction temperature T 2 than setting suction temperature B low 5～10 ℃ the time, judge that air conditioner refrigerating dosage is excessive, otherwise, enter next step;
(4), detect the compressor operating electric current I; if I 〉=during compressor protection current value I max; then be judged as the air conditioner refrigerating electric-controlled system fault, described air conditioner refrigerating electric-controlled system fault comprises outdoor heat exchanger fault, indoor electronics expansion throttling valve fault, indoor machine motor or fan blade or blower motor electric capacity fault.
2. DC frequency-changing VRV Climate Control Module failure judgment method according to claim 1, it is characterized in that: in the step (2), the malfunction indicator lamp that is provided with on the described driven compressor module has two, be respectively a LED lamp, the 2nd LED lamp, the failure cause that driver module breaks down is meant with the signal type of malfunction indicator lamp is related: a LED lamp Chang Liang, when the 2nd LED lamp is glittering, the driven compressor module is normal, when glittering n1 the m time of going out again of a LED lamp is to glimmer one-period or glittering n2 the m time of going out again of the 2nd LED lamp is when glimmering one-period, expression driven compressor module failure; Glittering frequency n 1, n2 and concrete failure cause are related.
3. according to the described DC frequency-changing VRV of claim Climate Control Module failure judgment method, it is characterized in that: described glittering frequency n 1; n2 is meant with specifically failure cause is related: if n1=1 then is the radiator high temperature protection; if n1=2 then is the radiator sensor fault, if n1=3; IPM protection when then being raising frequency, if n1=4, IPM protection during then for stable operation; if n1=5; IPM protection during then for frequency reducing is if n1=6 then is under-voltage protection; if n1=7; then be overvoltage protection, if n1=8 then is the indoor communications fault; if n1=9; then be type wire jumper fault, if n1=10 then is an IPM phase current fault; if n1=11; overcurrent protection when then being raising frequency, if n1=13, overcurrent protection when then being stable operation; if n1=14; overcurrent protection during then for frequency reducing, if n1=15, then for driving protection; if n1=16; then be outdoor communication failure, if n2=1 then is IPM fault/protection; if n2=2; then be the VDC overvoltage/undervoltage, if n2=3 then is the overcurrent protection of compressor phase current; if n2=6; then for driving protection, if n2=13 then is a press phase current fault; if n2=15 then is outer machine communication failure.
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| CN 201110172322 CN102230662A (en) | 2011-06-21 | 2011-06-21 | Method for judging fault of direct-current frequency conversion variable refrigerant volume (VRV) air conditioning module |
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| CN 201110172322 CN102230662A (en) | 2011-06-21 | 2011-06-21 | Method for judging fault of direct-current frequency conversion variable refrigerant volume (VRV) air conditioning module |
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| CN103293399A (en) * | 2012-02-22 | 2013-09-11 | 海尔集团公司 | Method and system for fault analysis of electric equipment |
| CN104807129A (en) * | 2014-01-23 | 2015-07-29 | 广东美的制冷设备有限公司 | Control method of air conditioner |
| CN105157295A (en) * | 2015-10-16 | 2015-12-16 | 杭州沈氏节能科技股份有限公司 | Refrigeration system and control method and control device thereof |
| CN105276882A (en) * | 2015-10-15 | 2016-01-27 | 珠海格力电器股份有限公司 | Exhaust temperature control method for condensing unit |
| CN105783198A (en) * | 2016-04-26 | 2016-07-20 | 广东美的制冷设备有限公司 | Air conditioner and fault displaying method thereof |
| CN106352442A (en) * | 2016-09-30 | 2017-01-25 | 广东美的制冷设备有限公司 | Snow removal control method of air conditioner outdoor unit |
| CN106679085A (en) * | 2016-12-27 | 2017-05-17 | 广东美的暖通设备有限公司 | Multi-split system and control method thereof |
| CN106839255A (en) * | 2016-11-29 | 2017-06-13 | 宁波奥克斯空调有限公司 | Convertible frequency air-conditioner sensor fault processing method |
| CN110410937A (en) * | 2019-07-23 | 2019-11-05 | 宁波奥克斯电气股份有限公司 | A kind of air conditioner self diagnosis control method, control device and air conditioner |
| CN110749027A (en) * | 2019-10-29 | 2020-02-04 | 珠海格力电器股份有限公司 | Monitoring method and device for electrical equipment, air conditioner and storage medium |
| CN111148949A (en) * | 2017-09-25 | 2020-05-12 | 三菱电机株式会社 | Refrigerating device |
| CN112556088A (en) * | 2020-11-26 | 2021-03-26 | 珠海格力电器股份有限公司 | Air conditioner and detection method thereof |
| CN112944614A (en) * | 2021-03-01 | 2021-06-11 | 青岛海尔空调电子有限公司 | Control method of air conditioner and air conditioner |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103293399A (en) * | 2012-02-22 | 2013-09-11 | 海尔集团公司 | Method and system for fault analysis of electric equipment |
| CN104807129B (en) * | 2014-01-23 | 2017-08-25 | 广东美的制冷设备有限公司 | The control method of air conditioner |
| CN104807129A (en) * | 2014-01-23 | 2015-07-29 | 广东美的制冷设备有限公司 | Control method of air conditioner |
| CN105276882A (en) * | 2015-10-15 | 2016-01-27 | 珠海格力电器股份有限公司 | Exhaust temperature control method for condensing unit |
| CN105157295A (en) * | 2015-10-16 | 2015-12-16 | 杭州沈氏节能科技股份有限公司 | Refrigeration system and control method and control device thereof |
| CN105783198A (en) * | 2016-04-26 | 2016-07-20 | 广东美的制冷设备有限公司 | Air conditioner and fault displaying method thereof |
| CN105783198B (en) * | 2016-04-26 | 2019-04-30 | 广东美的制冷设备有限公司 | Air conditioner and its fault display method |
| CN106352442A (en) * | 2016-09-30 | 2017-01-25 | 广东美的制冷设备有限公司 | Snow removal control method of air conditioner outdoor unit |
| CN106839255A (en) * | 2016-11-29 | 2017-06-13 | 宁波奥克斯空调有限公司 | Convertible frequency air-conditioner sensor fault processing method |
| CN106839255B (en) * | 2016-11-29 | 2019-05-10 | 奥克斯空调股份有限公司 | Convertible frequency air-conditioner sensor fault processing method |
| CN106679085A (en) * | 2016-12-27 | 2017-05-17 | 广东美的暖通设备有限公司 | Multi-split system and control method thereof |
| CN111148949A (en) * | 2017-09-25 | 2020-05-12 | 三菱电机株式会社 | Refrigerating device |
| CN111148949B (en) * | 2017-09-25 | 2021-09-10 | 三菱电机株式会社 | Refrigerating device |
| CN110410937A (en) * | 2019-07-23 | 2019-11-05 | 宁波奥克斯电气股份有限公司 | A kind of air conditioner self diagnosis control method, control device and air conditioner |
| CN110749027A (en) * | 2019-10-29 | 2020-02-04 | 珠海格力电器股份有限公司 | Monitoring method and device for electrical equipment, air conditioner and storage medium |
| CN112556088A (en) * | 2020-11-26 | 2021-03-26 | 珠海格力电器股份有限公司 | Air conditioner and detection method thereof |
| CN112944614A (en) * | 2021-03-01 | 2021-06-11 | 青岛海尔空调电子有限公司 | Control method of air conditioner and air conditioner |
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Application publication date: 20111102 |