LG Multi V mini ARUV Series Installation Manual Download

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ENGLISH

Installation Manual

Test Run

Sensor checking function judges whether the current temperature of indoor and outdoor unit sensors is right
or not. It checks 3 indoor temperature sensors, 9 outdoor temperature sensors, 2 outdoor pressure sensors.

It is used for judging sensor abnormality.

Note 2)

Note 1)

Sensor Checking Function

Wait for 3 min. after power

reset

Note 3)

Start

Main PCB

SW01S

Set the dip S/W according to the function
Sensor Checking

➠

Refrigerant Auto Charging : 1,2,7 ON

Sensor Checking

➠

Refrigerant Checking : 1,2,7,14 ON

Main PCB

SW01B

SW02B

Press the black button for 2 sec. on main PCB.

Main PCB
SW01V

Indoor/Outdoor units operate with
air circulation mode

Refrigerant Auto Charging

Press the black button
until '508' is displayed

Judging sensor

normality

Error Display

Refrigerant

Auto Charging

Main pcb
LED

Note 4)

Press the black button on the main PCB for 2 sec.

Main PCB

SW01V

Press the black button for 2 sec. after turning off all
of dip S/W.

Refrigerant Checking

Press the black button
until '608' is displayed.

Refrigerant

Checking

Don’t Perform Sensor Checking

Yes

Completed.

Note

1. Sensor checking function is used with Refrigerant

Checking and Refrigerant Auto Charging.

2. Check abnormal sensor
3. It is displayed at the LED on the main PCB at each step.
4. Refer to the next page for sensor error code part

Would you perform

the Sensor

checking?

Caution

1. Confirm auto addressing has been performed (Check

installed number of IDU).

2. The error can be displayed even if the sensor is

normal according to installation and temperature
condition. If error occurs, check the sensor and
judge abnormality.

Summary of Contents for Multi V mini ARUV Series

Page 1: ...ANT Please read this installation manual completely before installing the product Installation work must be performed in accordance with the national wiring standards by authorized personnel only Please retain this installation manual for future reference after reading it thoroughly R410A ENGLISH ITALIANO ESPAÑOL FRANÇAIS DEUTSCH PORTUGUESE ...

Page 2: ...fety Precautions 3 Installation Process 7 Outdoor Units Information 8 Before installation 9 Select the Best Location 10 Installation Space 11 Installation 15 Refrigerant piping 18 Electrical Wiring 37 Test Run 51 Caution For Refrigerant Leak 60 Installation guide at the seaside 62 ...

Page 3: ...n authorized technician to install the air conditioner Improper installation by the user may result in water leakage electric shock or fire Always ground the product There is risk of fire or electric shock Always intstall a dedicated circuit and breaker Improper wiring or installation may cause fire or electric shock ENGLISH Installation Manual 3 For re installation of the installed product always...

Page 4: ...not touch the power switch with wet hands There is risk of fire electric shock explosion or injury 4 Outdoor Unit Safety Precautions When installing and moving the air conditioner to another site do not charge it with a different refrigerant from the refrigerant specified on the unit If a different refrigerant or air is mixed with the original refrigerant the refrigerant cycle may malfunction and ...

Page 5: ...rectly It may cause corrosion on the product Corrosion particularly on the condenser and evaporator fins could cause product malfunction or inefficient operation Installation Always check for gas refrigerant leakage after installation or repair of product Low refrigerant levels may cause failure of product Do not install the product where the noise or hot air from the outdoor unit could damage the...

Page 6: ...ace the risk of suffocation Turn on the power at least 6 hours before starting operation Starting operation immediately after turning on the main power switch can result in severe damage to internal parts Keep the power switch turned on during the operational season Do not touch any of the refrigerant piping during and after operation It can cause a burn or frostbite Do not operate the air conditi...

Page 7: ...vision work The vacuum pump used must have a capacity of reaching at least 5 torr more than 1 hour Vacuum drying Recharge correctly as calculated in this manual and record the amount of added refrigerant Additional charge of refrigerant Make sure there are no gaps left between the facing materials used on the ceiling Fit facing panels Run each indoor unit in turn to make sure the pipe work has bee...

Page 8: ... Connectable Indoor Unit should be connected with 2 series indoor unit only Ex ARNU07GSEA2 System HP Model Refrigerant Product charge kg CF Correction Factor kg Max Connectable No of Indoor Units Net Weight kg Dimensions mm WxHxD inch Connecting Pipes Liquid Pipes mm inch Gas Pipes mm inch 4 5 6 ARUN40GS2 ARUN50GS2 ARUN60GS2 ARUV40GS2 ARUV50GS2 ARUV60GS2 3 7 3 7 3 7 0 5 0 0 6 8 9 118 118 118 950x1...

Page 9: ...ts composition changes and the system will not work properly Do not place the refrigerant container under the direct rays of the sun to prevent it from exploding For high pressure refrigerant any unapproved pipe must not be used Do not heat pipes more than necessary to prevent them from softening Be careful not to install wrongly to minimize economic loss because it is expensive in comparison with...

Page 10: ...oor unit at a place well ventilated and having a lot of sunshine in case of installing the product at a place with a high humidity in winter near beach coast lake etc Ex Rooftop where sunshine always shines Performance of heating will be reduced and preheat time of the indoor unit may be lengthened in case of installing the outdoor unit in winter at following location Shade position with a narrow ...

Page 11: ...service space The unit of values is mm In case of obstacles on the suction side 1 Stand alone installation 2 Collective installation 100 or more 100 or more 100 or 100 or more more 500 or less more 1000 or 100 or more 500 or less more 1000 or 150 or more 150 or 150 or more more 500 or less more 1000 or 300 or more 100 or more 200 or more 1000 or more 300 or more 100 or more 1000 or more 200 or mor...

Page 12: ...scharge side Obstacle height of discharge side is higher than the unit 1 Stand alone installation 2 Collective installation 500 or more 500 or less more 1000 or 500 or more 1000 or more 500 or less 1000 or more 1000 or more H L L H L H 100 or more 500 or more 500 or less more 1000 or L H 250 or more 1000 or more 100 or more 100 or more Unit mm Unit mm ...

Page 13: ...alone installation L H L H L H L H L H L H L H 300 or more 1000 or more 500 or less 50 more 1000 or L 300 or more 1250 or more H L 100 or more 500 or more 500 or less more 1000 or H L 300 or more 1000 or more H L 300 or more 1500 or more 500 or less more 1000 or H L 300 or more 1500 or more 100 or more 100 or more 5 5 5 100 or more e e 100 or more e e Unit mm Unit mm ...

Page 14: ...o that product can be operated well Get ready for seasonal wind or snow in winter even in other areas Install a suction and discharge duct not to let in snow or rain Install the outdoor unit not to come in contact with snow directly If snow piles up and freezes on the air suction hole the system may malfunction If it is installed at snowy area attach the hood to the system Install the outdoor unit...

Page 15: ...until their length are 20mm from the foundation surface If it is necessary to prevent the unit from falling over install as shown in the figure Prepare all 4 wires as indicated in the drawing Unscrew the top plate at the 4 location indicated A and B Put the screws through the nooses and screw them back tight A Location of the 2 fixation holes on the front side of the unit B Location of the 2 fixat...

Page 16: ... die as indicated dimension in the table above 4 Check Compare the flared work with figure right If flare is noted to be defective cut off the flared section and do flaring work again Main cause of gas leakage is defect in flaring work Carry out correct flaring work in the following procedure Pipe A Gas Liquid Gas Liquid 5 6 19 100 12 7 1 2 6 35 1 4 1 6 1 8 1 1 1 3 0 63 0 71 0 43 0 51 16 0 54 600 ...

Page 17: ...pipes See the following table for flare part machining dimensions When connecting the flare nuts apply refrigerant oil to the inside and outside of the flares and turn them three or four times at first Use ester oil or ether oil See the following table for tightening torque Applying too much torque may cause the flares to crack After all the piping has been connected use nitrogen to perform a gas ...

Page 18: ...tion material procured locally to stop up all gaps as shown in the figure 3 Insects or small animals entering the outdoor unit may cause a short circuit in the electrical box 2 Gas pipe Braze suitable field piping with service valve of gas pipe Gas pipe Liquid pipe Torque wrench Wet towel Forward Sideways Backward Knock out Base pan Downward Gas side piping Bigger Dia Liquid side piping Smaller Di...

Page 19: ... a wrench and then use a torque wrench Do not place wrenches on the valve cover Do not apply force on the valve cover this may result in a refrigerant leak Use hexagonal wrenches 4mm or 6mm Opening the valve 1 Place the hexagon wrench on the valve bar and turn counter clockwise 2 Stop when the valve bar no longer turns It is now open Closing the valve 1 Place the hexagon wrench on the valve bar an...

Page 20: ...der These are shown by 9 The Multi V will stop due to an abnormality like excessive or insufficient refrigerant At such a time always properly charge the unit When servicing always check the notes concerning both the piping length and the amount of additional refrigerant 10 Never use refrigerant to perform an air purge Always evacuate using a vacuum pump 11 Always insulate the piping properly Insu...

Page 21: ...lfunction and the unit may be damaged After selecting diameter of the refrigerant pipe to suit total capacity of the indoor unit connected after branching use an appropriate branch pipe set according to the pipe diameter of the indoor unit and the installation pipe drawing WARNING Do not use anti oxidants when brazing the pipe joints Residue can clog pipes and break equipment 3 2 1 4 5 6 1 Refrige...

Page 22: ...it connecting pipe Outdoor unit capacity type Liquid pipe Gas pipe mm inch mm inch 4 HP Ø9 52 3 8 Ø15 88 5 8 5 HP Ø9 52 3 8 Ø15 88 5 8 6 HP Ø9 52 3 8 Ø19 05 3 4 Indoor unit capacity kW Btu h Liquid pipe Gas pipe mm inch mm inch 5 6 19 100 Ø6 35 1 4 Ø12 7 1 2 16 0 54 000 Ø9 52 3 8 Ø15 88 5 8 Indoor unit capacity kW Btu h Liquid pipe Gas pipe mm inch mm inch 5 6 19 100 Ø6 35 1 4 Ø12 7 1 2 16 0 54 60...

Page 23: ... c d e 300m Longest pipe length Equivalent pipe length A B C D e 150m A B C D e 175m Longest pipe length after 1st branch B C D e 40m Difference in height Outdoor Unit Indoor Unit H 50m 40m Outdoor Unit is lower than Indoor Units Difference in height Indoor Unit Indoor Unit h 15m L l H h Assume equivalent pipe length of Y branch to be 0 5m that of header to be 1m calculation purpose Indoor Unit sh...

Page 24: ...d Performance difference between Indoor Units may occur Assume equivalent pipe length of Y branch to be 0 5m that of header to be 1m calculation purpose Indoor Unit should be installed at lower position than the header Longest pipe length Equivalent pipe length A f 150m A f 175m Longest pipe length after 1st branch f 40m Difference in height Outdoor Unit Indoor Unit H 50m 40m Outdoor Unit is lower...

Page 25: ...ifference in height Outdoor Unit Indoor Unit H 50m 40m Outdoor Unit is lower than Indoor Units Difference in height Indoor Unit Indoor Unit h 15m L l H h Downward Indoor Unit total capacity kW Btu h 5 6 19 100 Ø6 35 1 4 Ø12 7 1 2 16 54 600 Ø9 52 3 8 Ø15 88 5 8 22 4 76 400 Ø9 52 3 8 Ø19 05 3 4 Liquid pipe mm inch Gas pipe mm inch Assume equivalent pipe length of Y branch to be 0 5m that of header t...

Page 26: ... L1 L2 L3 a b c d Ø6 35 5m d Ø6 35 4m c Ø6 35 3m b Ø9 52 3m a Ø9 52 5m L3 Ø9 52 10m L2 Ø9 52 10m L1 The Amount of Refrigerant 2 Special condition In case of the No of CST TE RAC SE ARTCOOL SF models are over than 50 of the connected indoor units when the total No of connected indoor units are over than 50 of the max connectable indoor units Additional refrigerant charging amount kg A x B x ß AVG x...

Page 27: ...nstallation of 2 or more security device alarm for gas leakage Change Indoor Unit type installation position should be over 2m from the floor Wall mounted type Cassette type Adoption of ventilation system choose ordinary ventilation system or building ventilation system Limitation in piping work Prepare for earthquake and thermal stress WARNING Refer to model information since the CF Value of corr...

Page 28: ... Distribution 2 Vertical Distribution Ensure that the branch pipes are attached vertically 3 The others Header 1st 1st 1st Main pipe Distribution 2nd 2nd 3rd 2nd Main pipe Distribution 1st 3rd 3rd main pipe distribution 2nd Distribution Method ...

Page 29: ...t A B C Ensure that the branch pipes are attached horizontally or vertically see the diagram below When the number of pipes to be connected is smaller than the number of header branches install a cap to the unconnected branches The indoor unit having larger capacity must be installed closer to than smaller one If the diameter of the refrigerant piping selected by the procedures described is differ...

Page 30: ...ated with the insulator in each kit Joints between branch and pipe should be sealed with the tape included in each kit Any cap pipe should be insulated using the insulator provided with each kit and then taped as described above B Pinched pipe Horizontal plane View from point B in the direction of the arrow Insulate the header using the insulation material attached to the branch pipe kit as shown ...

Page 31: ...D22 2 O D22 2 I D15 88 I D15 88 I D12 7 I D22 2 I D19 05 O D19 05 I D12 7 I D15 88 I D15 88 I D15 88 I D19 05 I D19 05 I D19 05 I D12 7 I D12 7 I D9 52 O D12 7 O D12 7 I D9 52 I D6 35 I D34 9 I D41 3 I D38 1 O D22 2 I D19 05 I D15 88 I D12 7 O D15 88 I D41 3 I D38 1 I D41 3 O D38 1 O D34 9 I D34 9 I D34 9 I D22 2 I D28 58 I D28 58 I D38 1 O D28 58 I D22 2 I D19 05 I D15 88 I D19 05 I D22 2 I D22 2...

Page 32: ... I D Ø12 7 I D Ø6 35 O D Ø12 7 I D Ø9 52 I D Ø15 88 I D Ø12 7 I D Ø28 58 I D Ø19 05 I D Ø15 88 O D Ø28 58 I D Ø22 2 I D Ø25 4 I D Ø9 52 I D Ø6 35 I D Ø9 52 I D Ø12 7 I D Ø6 35 O D Ø12 7 I D Ø9 52 I D Ø15 88 I D Ø12 7 I D Ø28 58 I D Ø19 05 I D Ø15 88 O D Ø28 58 I D Ø22 2 I D Ø25 4 I D Ø9 52 I D Ø6 35 I D Ø9 52 I D Ø12 7 I D Ø6 35 O D Ø12 7 I D Ø9 52 I D Ø15 88 I D Ø15 88 I D Ø19 05 I D Ø31 8 I D Ø3...

Page 33: ...f heat insulation material with a finishing tape Power lines E D D B A C Be sure to give insulation work to refrigerant piping by covering liquid pipe and gas pipe separately with enough thickness heat resistant polyethylene so that no gap is observed in the joint between indoor unit and insulating material and insulating materials themselves When insulation work is insufficient there is a possibi...

Page 34: ...e valves closed Be also sure to pressurize liquid pipe gas pipe and high low pressure common pipe The test result can be judged good if the pressure has not be reduced after leaving for about one day after completion of nitrogen gas pressurization During this test set DIP switch as Vacuum Mode Note If the ambient temperature differs between the time when pressure is applied and when the pressure d...

Page 35: ...ate it again with the vacuum pump for 1hr to 100 7kPa vacuum drying If the system cannot be evacuated to 100 7kPa within 2 hrs repeat the steps of vacuum break and its drying Finally check if the vacuum gauge does not rise or not after maintaining the system in vacuum for 1 hr WARNING If the primary charging is not performed after vacuum wet air may go into the outdoor unit If air is mixed with th...

Page 36: ...when unit starts to run and the unit will display ch26 error If trying to keep running under this condition compressor will be broken 3 Refrigerant charging Follow following procedure to charge the refrigerant 1 Open all service valves 2 Run the unit with cooling mode 3 Charging the refrigerant to gas service valve during operation Refrigerant cylinder Open Open Charging during cooling operation L...

Page 37: ...any 2 Install the Outdoor Unit transmission line away from the power source wiring so that it is not affected by electric noise from the power source Do not run it through the same conduit 3 Be sure to provide designated grounding work to Outdoor Unit 4 Give some allowance to wiring for electrical part box of Indoor and Outdoor Units because the box is sometimes removed at the time of service work...

Page 38: ... protection circuit locally running the product in reversed phase may break the compressor and other parts Use the 2 core shield cables for transmission lines Never use them together with power cables The conductive shielding layer of cable should be grounded to the metal part of both units Never use multi core cable As this unit is equipped with an inverter to install a phase leading capacitor no...

Page 39: ...de Note 1 The figures are based on assumed length of parallel cabling up to 100m For length in excess of 100m the figures will have to be recalculated in direct proportion to the additional length of line involved 2 If the power supply waveform continues to exhibit some distortion the recommended spacing in the table should be increased If the lines are laid inside conduits then the following poin...

Page 40: ...witch or electrical outlet to disconnect each of indoor unit separately from the power supply WARNING Follow ordinance of your governmental organization for technical standard related to electrical equipment wiring regulations and guidance of each electric power company Make sure to use specified wires for connections so that no external force is imparted to terminal connections If connections are...

Page 41: ...nal block Use an appropriate screwdriver for tightening the terinal screws A screwdriver with a small head will strip the head and make proper tighterning impossible Over tightening the terminal screws may break them Precautions when laying power wiring How to connect wiring 1 Connect power supply wire to terminal block of control case using clamps on the supporter and control case as shown figure...

Page 42: ...lection Pull Box 1 Outdoor Unit 1Ø 220 240V WARNING Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage Transmission disorder by noise effect and motor current leakage without connection to pipe Don t install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply Install the main switch that can...

Page 43: ...x 1 Outdoor Unit 1Ø 220V WARNING Indoor Unit ground Lines are required for preventing electrical shock accident during current leakage Transmission disorder by noise effect and motor current leakage without connection to pipe Don t install an individual switch or electrical outlet to disconnect each of indoor unit separately from the power supply Install the main switch that can interrupt all the ...

Page 44: ...rly performed without the bad contact of the dip switch or not Checking the setting of the unit The number is sequentially appeared at the 7 segment in 5 seconds after applying the power This number represents the setting condition model code total capacity 2 25 model type 1 255 model code 4 6HP HP numbers No display cooling only 2 heat pump 25 normal 120 Model type Mini 1Ø 220V 121 Model type Min...

Page 45: ... 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 8 9 10 11 12 13 14 1 2 3 4...

Page 46: ...ON 1 2 3 4 5 6 7 ON Pump Down Pump Out 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON 1 2 3 4 5 6 7 ON Used when snow piles up On the ODU Fan Fan operates periodically Accelerates defrost operation Power reset is necessary Fan RPM down on night time Power rese...

Page 47: ...uired depending on numbers of indoor unit connection set 5 Numbers of indoor unit connection set whose addressing is completed are indicated for 30seconds on 7 segment LED of the outdoor unit PCB 6 After completing addressing address of each indoor unit is indicated on the wired remote control display window CH01 CH02 CH03 CH06 Indicated as numbers of indoor unit CAUTION In replacement of the indo...

Page 48: ...s number is displayed on wired remote control or indoor unit display window It is not an error message will disappeared when on off button is pressed on remote control ex Display of 01 02 15 means connection of 15 indoor units and auto addressing is completed normally Auto addressing start Waiting 3 minutes Power On Press SW02V for 5 sec 7 segment LED 88 Waiting about 2 7 minutes 7 segment LED OK ...

Page 49: ...number with a wired remote control To control several sets of Indoor Units into a group set the group ID from 0 to F for this purpose Terminal block on the main PCB SODU IDU INTERNET DRY1 DRY2 B A B D A C GND 12V B A B A Outdoor Units Group recognizing the simple central controller No 0 group 00 0F No 1 group 10 1F No 2 group 20 2F No 3 group 30 3F No 4 group 40 4F No 5 group 50 5F No 6 group 60 6...

Page 50: ...door Unit Fan Cooling Cool Heat Selector Installation and Connection Heat pump only Without Cool Heat Selector Installation and Connection In case try to set mode without Cool Heat Selector and try to use other switch except from LG Outdoor Cool Heat Selector in field Connect signal terminal block as below figure and description How to set mode without Cool Heat Selector Cooling Mode Setting GND C...

Page 51: ... on the main power supply and energizing the crankcase heater for more than 6 hours will cause the refrigerant to evaporate increasing the insulation resistance Check if high low pressure common pipe liquid pipe and gas pipe valves are fully opened NOTE Be sure to tighten caps Check if there are any problems in automatic addressing or not Check and confirm that there are no error messages in the d...

Page 52: ...ilation around outdoor heat exchanger Bad connector contact Coil failure EEV clogged EEV clogged Check resistance between terminals and chassis Change strainer Check oil amount after opening oil port Check resistance between terminals and chassis Check compressor U V W connection Check the outdoor fan operation after being turned the outdoor units off for some time Remove obstacles around the outd...

Page 53: ...black button until 508 is displayed Judging sensor normality Error Display Refrigerant Auto Charging Main pcb LED Note 4 Press the black button on the main PCB for 2 sec Main PCB SW01V Press the black button for 2 sec after turning off all of dip S W Refrigerant Checking Press the black button until 608 is displayed Refrigerant Checking Don t Perform Sensor Checking No Yes Yes No Completed Note 1 ...

Page 54: ...sents error content code 2 Last number represents outdoor unit number ex Indoor unit No 2 pipe inlet temperature sensor error ex Outdoor unit liquid pipe temperature sensor error 1 Outdoor Air Temperature 2 Heat Exchanger 1 3 Inverter Compressor Discharge Temperature 4 Suction Temperature 5 Liquid Pipe Temperature 6 SC pipe in 7 SC pipe out 8 High Pressure Sensor 9 Low Pressure Sensor ex Indoor un...

Page 55: ...pleted Press the black button on main PCB Press until 608 is displayed Main PCB SW01V IDU runs with cooling mode in order Main PCB SW01V Press the black button on main PCB Main PCB SW01V Note 1 IDU ODU are turned off Note 2 Judging Refrigerant Amount Note 1 In case air temperature is out of guaranteed temperature refrigerant checking function may end without performing refrigerant checking Use gua...

Page 56: ...2 Excess of Refrigerant 619 After remove the 20 of calculated total refrigerant recharge the refrigerant by using Refrigerant Auto Charging Function 3 Scarcity of Refrigerant 629 Charge the refrigerant by using Refrigerant Auto Charging Function 4 Impossible to Judge 639 IF the system is not in order check the other problem except refrigerant CAUTION 1 Guaranteed Temperature range Error occurs out...

Page 57: ...case the function is not used set the DIP switch OFF and reset the power 3 If ODU RPM changes cooling capacity may go down Main PCB power reset DIP switch No 12 14 ON ODU SW01S ODU SW01B Setting complete Max RPM setting method Setting the Fan Max RPM SW01V SW02V Note 1 Note 1 Select appropriate RPM referencing noise table 1 time 1 time 1 time Red button Black button 9 9 9 Operation hr 8 8 8 420 37...

Page 58: ...verter Compressor DC link Low Voltage Outdoor Unit High Pressure Switch Outdoor Unit Input Voltage High Low Voltage Outdoor Unit Inverter Compressor Start Failure PSC PFC Fault error Outdoor Unit Inverter DC link High Voltage Outdoor Unit Inverter Compressor Over Current Air temperature sensor of indoor unit is open or short Inlet pipe temperature sensor of indoor unit is open or short Failing to ...

Page 59: ...sure of Outdoor Unit Low Pressure of Outdoor Unit Low pressure ratio PFC Transmission error Inv Micom Convertor Micom Outdoor Unit Inverter Compressor CT Sensor Fault Outdoor Unit Inverter Compressor Discharge Temperature Sensor Fault Outdoor Unit Low Pressure Sensor Fault Outdoor Unit High Pressure Sensor Fault Outdoor Unit Air Temperature Sensor Fault Outdoor unit Heat Exchanger Temperature Sens...

Page 60: ...king procedure of limiting concentration Limiting concentration is the limit of Freon gas concentration where immediate measures can be taken without hurting human body when refrigerant leaks in the air The limiting concentration shall be described in the unit of kg m3 Freon gas weight per unit air volume for facilitating calculation Limiting concentration 0 44kg m3 R410A Outdoor unit No 1 system ...

Page 61: ...eak alarm linked with mechanical ventilator Pay special attention to the place such as a basement etc where refrigerant can be present since refrigerant is heavier than air Outdoor unit Indoor unit Smallest room R410A Refrigerant concentration kg m3 Total amount of replenished refrigerant in refrigerant facility kg Capacity of smallest room where indoor unit is installed m3 In case the result of c...

Page 62: ...e in the seaside installation please contact LG Electronics for the additional anticorrosion treatment 2 Periodic more than once year cleaning of the dust or salt particles stuck on the heat exchanger by using water Selecting the location Outdoor Unit 1 If the outdoor unit is to be installed close to the seaside direct exposure to the sea wind should be avoided Install the outdoor unit on the oppo...

Page 63: ...d that the short circuit power Ssc is greater than or equal to 964 kVA at the interface point between the user s supply and the public system It is the responsibility of the installer or user of the equipment to ensure by consultation with the distribution network operator if necessary that the equipment is connected only to a supply with a short circuit power Ssc greater than or equal to 964 kVA ...

Page 64: ...Memo 64 Outdoor Unit ...

Page 65: ...P No 3828A24002Y Printed in Korea After reading this manual keep it in a place easily accessible to the user for future reference ...

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