manualshive.com logo in svg

LBG Products LBH09ASI, Руководство по обслуживанию, Страница: 89 / 107

Поделиться
Скачать
LBG Products LBH09ASI Скачать руководство пользователя страница 89

86

Installation and Maintenance

Service Manual

Procedure

Steps

Remove the screws fixing motor clamp 
and then remove the motor clamp.

Remove the screws at the connection 
place of cross flow blade and motor; lift 
the motor and cross flow blade upwards 
to remove them.
Remove the bearing holder sub-assy.

Remove the screw fixing step motor and 

then remove the step motor.

Screws

Screw

 Motor clamp

10. Remove motor and cross flow blade

Motor

C

ross flow

Holder 

sub-assy

Step motor

Screws

a

b

Содержание LBH09ASI

Страница 1: ...Service Manual...

Страница 2: ...0 5 Electrical Part 21 5 1 Wiring Diagram 21 5 2 PCB Printed Diagram 25 6 Function and Control 30 6 1 Remote Controller Introduction 30 6 2 Remote Controller Introduction of YAP1F7F WiFi 35 6 3 Ewpe S...

Страница 3: ...3 Troubleshooting for Normal Malfunction 76 10 Exploded View and Parts List 78 10 1 Indoor Unit 78 10 2 Outdoor Unit 79 11 Removal Procedure 82 11 1 Removal Procedure of Indoor Unit 82 11 2 Removal P...

Страница 4: ...utdoor model Outdoor product code Remote Controller 1 LBH09AS CB438008001_X72713 LBH09ASI CB438N08000_X72713 LBH09ASO CB425W08201_X72713 YAN1F6F WiFi 2 LBH12AS CB438008202_X72713 LBH12ASI CB438N08200_...

Страница 5: ...lication Area yd2 19 14 28 70 Indoor Unit Model of indoor unit LBH12ASI Indoor Unit Product Code CB438N08200_X72713 Fan Type Cross flow Diameter Length DXL mm 98X633 5 Fan Motor Cooling Speed SH H M L...

Страница 6: ...F Air Flow Volume of Outdoor Unit CFM 1059 Fan Type Axial flow Fan Diameter mm 400 Defrosting Method Automatic Defrosting Climate Type T1 Isolation I Moisture Protection IPX4 Permissible Excessive Ope...

Страница 7: ...ndoor Unit Model of indoor unit LBH09ASI Indoor Unit Product Code CB438N08000_X72713 Fan Type Cross flow Diameter Length DXL mm 98X580 Fan Motor Cooling Speed SH H M L r min 1350 1200 1050 750 Fan Mot...

Страница 8: ...Capacitor F Air Flow Volume of Outdoor Unit CFM 1059 Fan Type Axial flow Fan Diameter mm 400 Defrosting Method Climate Type T1 Isolation I Moisture Protection IPX4 Permissible Excessive Operating Pre...

Страница 9: ...duct Code CB438N12900_X72713 Fan Type Cross flow Diameter Length DXL mm 98X630 Fan Motor Cooling Speed r min 1300 1200 1120 1050 980 920 750 500 Fan Motor Heating Speed r min 1300 1200 1140 1080 1020...

Страница 10: ...Length LXDXW mm 742X38 1X550 Fan Motor Speed rpm 900 Output of Fan Motor W 30 Fan Motor RLA A 0 5 Fan Motor Capacitor F Air Flow Volume of Outdoor Unit CFM 1295 Fan Type Axial flow Fan Diameter mm 43...

Страница 11: ...oduct Code CB438N13100_X72713 Fan Type Cross flow Diameter Length DXL mm 98X630 Fan Motor Cooling Speed r min 1400 1200 1120 1050 980 920 750 500 Fan Motor Heating Speed r min 1400 1200 1140 1080 1020...

Страница 12: ...3X57X550 Fan Motor Speed rpm 900 Output of Fan Motor W 30 Fan Motor RLA A 0 5 Fan Motor Capacitor F Air Flow Volume of Outdoor Unit CFM 1412 Fan Type Axial flow Fan Diameter mm 438 Defrosting Method A...

Страница 13: ...door Unit Product Code CB438N13900_X78142 Fan Type Cross flow Diameter Length DXL mm 98X630 Fan Motor Cooling Speed r min 1400 1200 1120 1050 980 920 750 500 Fan Motor Heating Speed r min 1400 1200 11...

Страница 14: ...33X57X550 Fan Motor Speed rpm 900 Output of Fan Motor W 30 Fan Motor RLA A 0 4 Fan Motor Capacitor F Air Flow Volume of Outdoor Unit CFM 1412 Fan Type Axial flow Fan Diameter mm 438 Defrosting Method...

Страница 15: ...t Code CB438N13800_X78142 Fan Type Cross flow Fan Diameter Length DXL mm 98X630 Cooling Speed r min 1300 1200 1120 1050 980 920 750 500 Heating Speed r min 1300 1200 1140 1080 1020 960 900 Fan Motor P...

Страница 16: ...1 X 550 Fan Motor Speed rpm 900 Fan Motor Power Output W 30 Fan Motor RLA A 0 4 Fan Motor Capacitor F Outdoor Unit Air Flow Volume CFM 1295 Fan Type Axial flow Fan Diameter mm 438 Defrosting Method Au...

Страница 17: ...3 32 41 50 57 67 75 86 95 104 113 122 Conditions Indoor DB80 F WB66 9 F Outdoor DB95 F Indoor air flow Super High Pipe length 24 6ft 0 20 40 60 80 100 120 140 160 22 13 5 0 5 10 17 20 24 32 41 43 47 5...

Страница 18: ...nlet and outlet pipe temperature of heat exchanger Fan speed of indoor unit Fan speed of outdoor unit Compressor revolution rps Indoor Outdoor P PSIG T1 F T2 F 70 60 19 94 19 04 LBH09AS LBH09AW LBH09D...

Страница 19: ...when blowing Indoor fan motor rotating speed Noice dB A 25 30 35 40 45 SS H MH M ML L SL SM Cooling 20 Heating Indoor side noise when blowing Indoor fan motor rotating speed Noice dB A 25 30 35 40 45...

Страница 20: ...nch Models W H D LBH09ASI 31 1 8 10 13 16 7 7 8 LBH12ASI LBH09AWI LBH12AWI LBH09DWI LBH12DWI 33 17 64 11 3 8 8 15 64 W LBH12ASI LBH09AWI LBH12AWI LBH09DWI LBH12DWI LBH09ASI D H 3 9 16 5 7 8 2 1 8 6 5...

Страница 21: ...nical Information Service Manual 3 2 Outdoor Unit 21 1 4 11 1 4 30 10 12 5 8 33 3 8 21 1 4 Unit inch LBH09ASO LBH12ASO LBH09AWO LBH09DWO Unit inch 10 1 8 30 45 64 23 15 32 33 25 64 11 17 64 21 17 64 1...

Страница 22: ...19 Technical Information Service Manual 35 25 64 32 12 64 19 19 64 13 32 64 12 23 15 32 14 7 8 Unit inch LBH12AWO LBH12DWO...

Страница 23: ...S LBH12AW LBH12DW Connection pipe specification Liquid pipe 1 4 Gas pipe 3 8 1 2 Indoor unit Outdoor unit COOLING HEATING 4 Way valve Discharge Suction Heat exchanger evaporator Heat exchanger condens...

Страница 24: ...20 0 18 211 725 3 5 21752 5 3 3 1 02725 5 Electrical Part 5 1 Wiring Diagram Indoor Unit Instruction Symbol Symbol Color Symbol Symbol Color Symbol Name WH White GN Green CAP Jumper cap YE Yellow BN B...

Страница 25: ...5220 78 7 03 6 1625 7 03 6 1625 63 2 5 5 9 5 1 57 02725 0 6 1 8 0 75 2 21752 5 3 02 8 02725 1 1 5 1 8 211 7 1 6 1 5 0 83 2 1 67 33 1 02725 7 5 7 51 1 3OHDVH GRQ W WRXFK DQ HOHFWURQLF FRPSRQHQW DQG WHU...

Страница 26: ...2 5 725 1 3 0DLQ RDUG 29 203 2 1 DQG HDWHU RWWRP 5 9 7521 3 16 21 9 9 0 1 7 1 97 237 21 237 21 237 21 600007065387 JURXQG RQO LURQ VKHOO PRWRU DSSOLHV WR WKH 127 0RWRU 51 1 3OHDVH GRQ W WRXFK DQ WHUP...

Страница 27: ...203 8 9 0 1 7 5 1 8 5 32 5 1 1 2 75 8 5 8 5 1 1 1 1 8 1 1 02725 2 5 725 1 2 1 HDWHU DQG RWWRP 5 0 1 7 7 RPSUHVVRU DQG HDWHU 9 1 7521 3 16 21 9 9 1 225 81 7 DSSOLHV WR WKH 127 0RWRU LURQ VKHOO PRWRU JU...

Страница 28: ...Interface of health function live wire only for the mode with this function 8 Feedback interface of indoor unit 9 10 11 Interface of tube temperature sensor 12 Wired controller only for the mode with...

Страница 29: ...indoor fan 3 Auto button 4 Up down swing motor 5 Left right swing motor 6 Interface of temperature sensor 7 Terminal for display board connection 8 Terminal of jumper cap Interface of health tunction...

Страница 30: ...I 1 2 3 4 5 6 7 8 9 10 No Name 1 Communication wire 2 Live wire interface 3 Neutral wire 4 Needle stand for indoor fan 5 Up down swing motor 6 Left right swing motor 7 Wired controller 8 Display inter...

Страница 31: ...of power supply live 6 1 4 way valve terminal 2 Terminal of outdoor fan 3 Grounding wire Terminal of power supply neutral wire Communication wire 7 Terminal of outdoor unit temperature sensor 8 Compre...

Страница 32: ...l 2 3 Reactor wiring terminal 1 4 Terminal of chassis electric heater 5 6 4 way valve terminal 7 Neutral wire Grounding wire 8 Communication wire 9 Live wire 10 Terminal of electronic expansion valve...

Страница 33: ...he air conditioners with multifunction For some function which the model doesn t have if press the corresponding button on the remote controller that the unit will keep the original running status Aft...

Страница 34: ...peed 5 TURBO button Under COOL or HEAT mode press this button to turn to quick COOL or quick HEAT mode icon is displayed on remote controller Press this button again to exit turbo function and icon wi...

Страница 35: ...ars and the word ON on remote controller blinks Press or button to adjust TIMER ON setting After each pressing or button TIMER ON setting will increase or decrease 1min Hold or button 2s later the tim...

Страница 36: ...controller won t send signal Sleep function and 8 heating function can t operate at the same time If 8 heating function has been set under cooling mode press sleep button will cancel 8 heating functi...

Страница 37: ...d be close to indoor unit during operation Replace new batteries of the same model when replacement is required When you Don t use remote controller for a long time please take out the batteries If th...

Страница 38: ...ss button to adjust fan blowing angle When selecting dry mode the air conditioner operates at low speed under dry mode Under dry mode fan speed can t be adjusted Press button to adjust fan blowing ang...

Страница 39: ...main unit will swing back and forth from up to down and then loosen the button the unit present position of guide louver will be kept immediately Under up and down swing mode when the status is switch...

Страница 40: ...st setting sleep curve and blink 4 Repeat the above step 2 3 operation until 8 hours temperature setting finished sleep curve setting finished at this time the remote controller will resume the origin...

Страница 41: ...rature can t be adjusted Press TURBO button and the remote controller won t send signal Sleep function and 8 C heating function can t operate at the same time If 8 C heating function has been set unde...

Страница 42: ...e no obstacles between them Signal may be interfered easily in the room where there is fluorescent lamp or wireless telephone remote controller should be close to indoor unit during operation Replace...

Страница 43: ...App is installed register the account and add the device to achieve long distance control and LAN control of smart home appliances For more information please refer to Help in App 6 3 Ewpe Smart App O...

Страница 44: ...e is the set value under each condition Ambient temperature is Tamb Tcompensation for heat pump unit and Tamb for cooling only unit 4 If there s I feel function Tcompensation is 0 Others are same as a...

Страница 45: ...be still in standby mode after finishing refrigerant recycling if the unit is in ON status before refrigerant recycling it will still run in original operation mode 11 Ambient temperature display cont...

Страница 46: ...1 If the compressor is shut down and Tsetup Tindoor ambient temperature Tcooling indoor ambient temperature compensation 32 9 F start up the machine for cooling the cooling operation will start 2 Duri...

Страница 47: ...ed on 2 Defrosting a Defrosting starts the compressor is shut down and restarts it after 55 second delay b Defrosting ends the compressor stops then starts it after 55 second delay 2 Outer Fans Contro...

Страница 48: ...it should not be started and should be stopped to treat according to the overload protection Clear the trouble at the mode of power turn off heating and the protection times are not counted 2 Frequen...

Страница 49: ...ature at normal speed during discharging you should limit the frequency raising of compressor 3 Reducing frequency at normal speed and stopping machine If Tfrequency reducing temperature at normal spe...

Страница 50: ...ust the compressor frequency by reducing 30Hz 90s till the lower limit After it was running 90s at the lower limit if T frequency reducing temperature at normal speed of module TModule you should stop...

Страница 51: ...regarded as four way valve reversion abnormity And then it can run if stop the reversion abnormity protection for four way valve 3 min and if it still can t run when the reversion abnormity protection...

Страница 52: ...eration 3 When 32 F Toutdoor amb 35 6 F the electric heating of chassis will keep original status 7 Electric Heating Function of Compressor 1 When Toutdoor amb 23 F compressor stops operation while th...

Страница 53: ...tive accessories such as protective boards cable cross loop and wire clip 7 The live wire neutral wire and grounding wire of power supply must be corresponding to the live wire neutral wire and ground...

Страница 54: ...sure rise or compressor rupture resulting in injury 4 During refrigerant recovery make sure that liquid valve and gas valve are fully closed and power is disconnected before detaching the connection p...

Страница 55: ...Electroprobe 7 Electronic leakage detector 10 Pipe pliers pipe cutter 2 Screw driver 5 Universal meter 8 Vacuum pump 11 Pipe expander pipe bender 3 Impact drill drill head electric drill 6 Torque wre...

Страница 56: ...8 inch At least 5 7 8 inch Space to the wall S p a c e t o t h e o b s t r u c t i o n r o o l f e h t o t e c a p S A t l e a s t 1 1 8 i n c h Space to the obstructio At least 78 5 8 inch Space to...

Страница 57: ...ang the indoor unit Make the bound pipes pass through the wall hole and then connect outdoor unit Neaten the pipes Vacuum pumping and leakage detection Check after installation and test operation Fini...

Страница 58: ...Grounding Requirement 1 The air conditioner is first class electric appliance It must be properly grounding with specialized grounding device by a professional Please make sure it is always grounded e...

Страница 59: ...at the corresponding bellmouth As show in Fig 5 2 Pretightening the union nut with hand 3 Adjust the torque force by referring to the following sheet Place the open end wrench on the pipe joint and p...

Страница 60: ...1 Put the bound pipes in the wall pipe and then make them pass through the wall hole 2 Hang the indoor unit on the wall mounting frame 3 Stuff the gap between pipes and wall hole with sealing gum 4 Fi...

Страница 61: ...1 Connect the outdoor drain joint into the hole on the chassis 2 Connect the drain hose into the drain vent As show in Fig 19 3 Fix Outdoor Unit 1 Place the outdoor unit on the support 2 Fix the foot...

Страница 62: ...eakage detector is not available please use soap water for leakage detection Apply soap water at the suspected position and keep the soap water for more than 3min If there are air bubbles coming out o...

Страница 63: ...rt circuit Outdoor ambient sensor open or short circuit Indoor tube sensor open or short circuit Indoor ambient sensor open or short circuit Indoor unit and outdoor unit doesn t match Jumper cap malfu...

Страница 64: ...ard broken Malfunction diagnosis process Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted Start Insert the temperature sensor tightly Yes Yes Yes Y...

Страница 65: ...he connection of PG motor control terminal is firm Turn on the unit again measure whether the output voltage on control terminal for PG motor is more than 50V within 1 min after the louvers are opened...

Страница 66: ...the mainboard is defined abnormal Malfunction diagnosis process Start Is there jumper cap on the mainboard Is the jumper cap inserted correctly and tightly Replace the jumper cap with the same model...

Страница 67: ...harges slowly The zero cross detectioncircuit of the mainboard is defined abnormal Malfunction diagnosis process Turn power off for 1minute the turn back on The unit returns to normal Conclusion U8 is...

Страница 68: ...board matches with display board Main board of IDU matches with that of ODU Communication cord is damaged Replace IDU s main board Malfunction eliminated End Connect the line according to wiring diag...

Страница 69: ...anual 5 Malfunction of detecting plate WIFI JF Start Is malfunction eliminated The end check if the connection wire are correctly connected Replace the detecting plate with the same model Replace the...

Страница 70: ...er than 200V Fault with the voltage testing circuit on control panel AP1 Replace the control panel AP1 Measure the AC voltage between terminalL andN on wiring board XT power supply Voltage within 210V...

Страница 71: ...resume to the range of 210VAC 250VAC Correctly connect the wires of compressor according to the electric wiring diagram and then turn on the unit Check the connection between the control board and th...

Страница 72: ...d high temperature protection Is outdoor ambient temperature higher than 53 20 minutes after the complete unit is powered off Is heat dissipation of the indoor unit and outdoor unit abnormal Normal pr...

Страница 73: ...ompressor stopping enough Fault diagnosis process No Yes No No Yes Yes Yes No Power on the unit Is stop time of the compressor longer than 3 minutes Restart it up after 3 minutes Does startup fail Are...

Страница 74: ...sor connected correctly Is connection sequence right Is the connection made in clockwise direction Connect the wires correctly Replace the control panel AP1 If the fault is eliminated Replace the comp...

Страница 75: ...utes after the complete unit is powered off Is the terminal FA for the electronic expansion valve connected correctly Connect the wires correctly Resistances between the first four pins close to the t...

Страница 76: ...re is any damage or short circuit Replace it as per the wiring diagram and reconnect the wires If the fault is eliminated Remove the PFC capacitor and measure resistance between the two terminals Is t...

Страница 77: ...id the equipment operate normally before the failure occurs The AP1 voltage detection circuit is at fault Check wiring inside of the indoor and outdoor units Are wires broken Check the communication c...

Страница 78: ...he compressor Replace the mainboard with the same model End Is the supply voltage too low with overload Is the indoor outdoor heat exchanger dirty or are the air inlet and outlet blocked The fan is ab...

Страница 79: ...d for details Malfunction of compressor Compressor can t operate Refer to point 5 of maintenance method for details 9 3 Troubleshooting for Normal Malfunction 1 Air Conditioner Can t be Started Up 2 P...

Страница 80: ...n pipe Replace drain pipe Wrapping is not tight Water leaking from the pipe connection place of indoor unit Wrap it again and bundle it tightly 5 Compressor Can t Operate Possible causes Discriminatin...

Страница 81: ...sy of Bearing 10 Ring of Bearing 11 Cold Plasma Generator No Description 12 Evaporator Assy 13 Wall Mounting Frame 14 Cross Flow Fan 15 Fan Motor 16 Connecting pipe clamp 17 Drainage Hose 18 Stepping...

Страница 82: ...Valve Assy 11 Valve 12 Valve Support Block NO Description 13 Cover of Pass Wire 14 Right Side Plate Assy 15 Cable Cross Plate 2 16 Magnet Coil 17 Capillary Sub assy 18 Rear Grill 19 Electric Box 20 Ma...

Страница 83: ...ion 1 Front Grill 2 Cabinet 3 Axial Flow Fan 4 Brushless DC Motor 5 Motor Support Sub Assy 6 Chassis Sub assy 7 Left Side Plate 8 Coping NO Description 9 Drainage Joint 10 Clapboard Sub Assy 11 Conden...

Страница 84: ...s Plate 2 18 Right Side Plate 19 4 Way Valve Assy 20 4 Way Valve 21 Reactor 22 Electric Expansion Valve Sub Assy 23 Electric Expand Valve Fitting 24 Rear Grill 25 Condenser Assy 26 Compressor Overload...

Страница 85: ...1 Remove filter assembly 2 Remove horizontal louver Front panel Front case Right filter Groove Left filter Open the front panel Push the left filter and right filter until they are separate from the...

Страница 86: ...on clasps between front case sub assy and bottom case Lift up the front case sub assy and take it out 5 Remove front case sub assy 6 Remove display Bottom case Front case sub assy Display Screws Clasp...

Страница 87: ...ric box assy Twist off the screws that are locking each lead wire and rotate the electric box assy Twist off the screws that are locking the wire clip Loosen the power cord and remove it s wiring term...

Страница 88: ...terminals Pull out the holder for some terminals at first holder is not available for some wiring terminal hold the connector and then pull the terminal Circlip Soft sheath Holder Connector Procedure...

Страница 89: ...he screws at the connection place of cross flow blade and motor lift the motor and cross flow blade upwards to remove them Remove the bearing holder sub assy Remove the screw fixing step motor and the...

Страница 90: ...ws fixing valve cover and then remove the valve cover Remove connection screws connecting the top cover plate with the front panel and the right side plate and then remove the top cover Remove connect...

Страница 91: ...ow blade Procedure Steps Remove connection screws connecting the front panel with the chassis and the motor support and then remove the front panel Remove connection screws connecting the right side p...

Страница 92: ...r of elec tric box Lift to remove the cover Loos en thewire and disconnect the terminal Lift to re move the electric box assy Loosen the screws of the clapboard sub assy The clapboard sub assy has a h...

Страница 93: ...way Valve Assy with wet cotton and unsolderthe 4 weld spots connecting the 4 way Valve Assy to take it out Note Refrig erant shouldbe discharged firstly Welding processshould be as quickly as possible...

Страница 94: ...top panel with the front panel and the right side plate and then remove the top panel cable cross plate sub assy valve cover Remove cable cross plate sub assy and valve cover Remove the screws connec...

Страница 95: ...le Remove the screws fixing right side plate left side plate and then remove them panel axial flow blade Remove connection screws between the front grille and the front panel Then remove the front gri...

Страница 96: ...then remove the clapboard Remove the screws fixing motor and then remove the motor Remove the screws fixing motor support and then remove the motor support Procedure Step Remove the screws fixing elec...

Страница 97: ...e with a wet cloth completely to avoid damage to the valve caused by high temperature Procedure Step Unsolder the welding joint connecting the valve with capillary and condenser unsolder the welding j...

Страница 98: ...2 Remove top cover big handle top cover Before disassamble valve cover Remove the screws fixing top panel and then remove the top panel Remove the screws fixing big handle valve cover and then remove...

Страница 99: ...le Remove the screws fixing right side plate left side plate and then remove them panel Remove connection screws between the front grille and the front panel Then remove the front grille Remove connec...

Страница 100: ...then remove the clapboard Remove the screws fixing motor and then remove the motor Remove the screws fixing motor support and then remove the motor support Procedure Step Remove the screws fixing elec...

Страница 101: ...e with a wet cloth completely to avoid damage to the valve caused by high temperature Procedure Step 4 way valve assy liquid valve gas valve compressor valve support Unsolder the welding joint connect...

Страница 102: ...C Fahrenheit display temperature o F Fahrenheit o F Celsius o C Fahrenheit display temperature o F Fahrenheit o F Celsius o C 61 60 8 16 69 70 69 8 21 78 79 78 8 26 62 63 62 6 17 71 72 71 6 22 80 81 8...

Страница 103: ...teps A Cut the pip Confirm the pipe length according to the distance of indoor unit and outdoor unit Cut the required pipe with pipe cutter B Remove the burrs Remove the burrs with shaper and prevent...

Страница 104: ...358 233 6 0 717 24 8 60 23 95 9 779 165 2 2 28 235 4 0 697 26 6 57 18 96 8 9 382 167 2 206 237 2 0 678 28 4 54 31 98 6 9 003 168 8 2 133 239 0 66 30 2 51 59 100 4 8 642 170 6 2 064 240 8 0 642 32 49 0...

Страница 105: ...95 13 04 165 2 3 04 235 4 0 93 26 6 76 24 96 8 12 51 167 2 94 237 2 0 904 28 4 72 41 98 6 12 168 8 2 844 239 0 88 30 2 68 79 100 4 11 52 170 6 2 752 240 8 0 856 32 65 37 102 2 11 06 172 4 2 663 242 6...

Страница 106: ...342 8 77 49 19 147 2 10 54 217 4 3 04 8 6 323 9 78 8 47 08 149 10 18 219 2 2 955 10 4 306 2 80 6 45 07 150 8 9 827 221 2 872 12 2 289 6 82 4 43 16 152 6 9 489 222 8 2 792 14 274 84 2 41 34 154 4 9 165...

Страница 107: ...For product improvement specifications and appearance in this manual are subject to change without prior notice JF00304744...

Отзывы:

Нет отзывов