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REGULAR MAINTENANCE

ENGLISH

69

REGULAR MAINTENANCE

Regular Maintenance

Performing a maintenance on a regular basis is important requirement to maintain the engine’s
best condition.

Give special attention to the safety matters when replacing parts or during the maintenance.

- Warranty Period

This product has full one-year warranty from the day when the test run is completed.

- Regular maintenance service is provided by the company even after the warranty period is over

because the extended maintenance in a regular basis is needed for the safety and convenience
of the customers. The regular maintenance contract is made about the items as follows.
Contact the retail store/AS team for more details.

Regular maintenance/ regular parts replacement period and the parts list

Maintenance checklist

Maintenance

period

Mainte-

nance

checklist

System condi-

tion checkup

Operation data records/diagnosis

Every year or

every 2,000

hours

Refrigerant leakage detection

Engine and

other equip-

ment checkup

Main engine checkup

Start performance checkup

Noise/vibration checkup

Harness system checkup

Mixer cleansing

Valve clearance checkup/(adjust if

necessary)

Coolant system checkup

Leakage detection

Gravity measurement supplement/

supplement

Engine oil system checkup

Oil leak detection/change/refill

Exhaust gas system checkup

Exhaust gas line leakage detection

Fuel gas system checkup

Safety device operation checkup/leak-

age detection

Parts to

be regu-

larly

replaced

Engine oil & Oil filter

Replacement

Every 5

years or

every 10,000

hours

Air cleaner element

Ignition plug

Compressor drive belt

Drain filter refill/cleaning

Coolant checkup/refill

Regular maintenance means a general maintenance every year including the replacement of reg-
ular parts. Each maintenance should be given every 10,000 hours or 5 years after the previous
maintenance. (whichever comes first)

- The heat exchanger fins cleansing is usually performed every 3~4 years, depending on the oper-

ational conditions. If dust or impurities stick to the heat exchanger fins of the outdoor/indoor
units, it may cause a poor performance or malfunction. Thus, cleansing the fins is needed to
extend the lifespan of the unit. This service involves extra charges.

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Summary of Contents for GP-W500B6C

Page 1: ...t 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 your set and retain it for future reference www lg com Model GPUW BSS GP W B6 GP W B2 P NO MFL67737304 ENGLISH ...

Page 2: ...condition er is used for many hours Clean the air filter once every 2 weeks Dust and impurities collected in the air filter may block the air flow or weaken the cooling dehumidifying functions For your records Staple your receipt to this page in case you need it to prove the date of purchase or for warranty purposes Write the model number and the serial number here Model number Serial number You c...

Page 3: ...llation Only licensed electricians should do all electrical work according to Electric Facility Engineer ing Standard and Interior Wire Regulations and the instructions given in this manual and always use a specific circuit If the power supply capacity is inadequate or electrical work is performed improperly electric shock or fire may result Only licensed technicians should install the fuel gas pi...

Page 4: ...perated forcibly fire or explosion may result Always use a vacuum pump or Inert nitrogen gas when doing leakage test or air purge Use of oxygen compressed air and flammable gases may cause fire and explosion There is risk of death property damage or explosion Check what kind of fuel gas is used Using an incorrect type of gas may cause the operation failure of the engine and the mal function of the...

Page 5: ... aid conditioner CAUTION Installation Always check for gas leakage after installation or repair of the air conditioner It may cause failure of the air conditioner Do not install the product where the noise or hot air from the outdoor unit could disturb your neighbors It may cause a conflict with your neighbors Keep level even when installing the product Uneven height of the air conditioner may res...

Page 6: ...wer cables when installing The cables may cut off and generate heat due to a high tension and it may cause fire Do not replace the damaged power cables on your own Instead contact A S center for replace ment Always use a dedicated power cables Use power cables of sufficient current carrying capacity and rating It may cause fire or elec tric shock Beware of the damage to the stand from long term us...

Page 7: ...can get very hot or cold depending on the refrigerant condition which flows through the pipes compressor and refrigerant cycle parts If you touch the pipes with the refrigerant passing through you may get burned or frostbite Do not operate the air conditioner with the product panels or guards removed Rotating hot or high voltage parts can cause injury Do not turn off the main power immediately aft...

Page 8: ...1 ACCESSORIES 13 INSTALLATION PROCESS 14 SELECTION OF INSTALLATION SITE 17 OUTDOOR UNIT INSTALLATION 25 REFRIGERANT PIPING 33 PIPE CONNECTIONS BETWEEN INDOOR OUTDOOR UNITS 38 LEAK DETECTION 39 PIPE INSULATION 41 VACUUM AND REFRIGERANT CHARGE 44 ELECTRICAL WIRING 57 ADDITIONAL FUNCTIONS 64 SELF DIAGNOSIS FUNCTION 69 REGULAR MAINTENANCE ...

Page 9: ...6C GP W400B2C B6C GP W450B2C B6C GP W500B2C B6C 90 307 100 101 344 600 112 382 100 127 433 300 142 484 500 System Capacity kW btu h Number of Indi vidual Outdoor Units Individual Outdoor Unit Capacity kW btu h 45 153 600 56 191 100 71 242 300 Master Slave Master Slave Master Slave 1 1 1 1 1 1 2 1 1 2 1 1 2 1 1 2 1 1 2 1 1 COMBINATION OF OUTDOOR UNIT GHP Model 45 153 600 56 191 100 71 242 300 90 30...

Page 10: ...to more than 100 of outdoor unit capacity the cooling and heating performance of the indoor unit running may be reduced When installing indoor units in a series install in descending order of outdoor unit capacity as follows ڸ ڹ A Master B Slave A B Connecting pipe on the indoor unit Connecting branch duct between outdoor units ...

Page 11: ... 88 I D12 7 I D19 05 I D15 88 2 3 1 2 1 3 2 5 9 D I 2 5 9 D I 7 2 1 D O I D15 88 I D19 05 I D12 7 I D12 7 I D19 05 I D15 88 I D12 7 I D19 05 O D12 7 I D6 35 I D15 88 371 394 83 11 0 70 2 3 3 2 ARBLN 14521 471 517 125 120 130 I D19 05 I D15 88 I D12 7 I D19 05 I D22 2 I D41 3 I D38 1 I D41 3 O D34 9 I D34 9 I D34 9 I D22 2 I D28 58 I D28 58 I D38 1 I D41 3 I D34 9 I D38 1 O D22 2 O D38 1 O D15 88 O...

Page 12: ...ARBL104 120 150 400 160 ID15 88 ID12 7 ID19 05 ID15 88 ID22 2 ID28 58ID25 4 120 120 150 360 ID9 52 ID9 52 ID6 35 ID6 35 ID9 52 ID12 7 7 branch ARBL107 120 150 160 580 ID19 05 ID15 88 ID15 88 ID12 7 ID22 2 ID28 58 ID25 4 120 150 700 120 ID6 35 ID9 52 ID9 52 ID6 35 ID9 52 ID12 7 10 branch ARBL1010 120 150 160 760 ID19 05 ID15 88 ID15 88 ID12 7 ID22 2 ID28 58 ID25 4 120 150 120 720 ID6 35 ID9 52 ID9 ...

Page 13: ...g is completed Write down the exact length of refrigerant pipes used for calculating the amount of addtional charging Use concrete pad Provide sufﬁcient vibration prooﬁng device Make sure airﬂow is sufﬁcient Beware of downward sloping of exhaust drain pipes Preparation for a possible freezing should be considered during installation Explain the use of the system as clearly as possible to your cust...

Page 14: ...a place exposed to snow or rain directly Otherwise install a duct for air suction discharge Do not use the unit under any special environment where oil steam and sulfuric gas exist When the outdoor temperature is below 5 C installing the outdoor unit for air conditioning is restricted It is recommended to fence round the outdoor unit in order to prevent any person or animal from accessing the outd...

Page 15: ...n icicle or snow may fall because this may cause damage Place that has no direct influence of snow or rain Place with no danger of snowfall or icicle drop Place without weak floor or base such as decrepit part of the building or with a lot of snow accumulation The materials of windbreak such as concrete should be strong enough to protect the out door unit from the sea wind The height and width sho...

Page 16: ...nel More than 600 More than 600 More than 2000 More than 2000 More than 350 More than 350 More than 10 More than 10 More than 10 More than 1000 More than 600 More than 150 More than 350 More than 350 More than 350 More than 350 Individual Installation Separation distance from combustibles Combined Installation Unit mm More than 1000 More than 1000 Securing the installation space installation space...

Page 17: ...ort the outdoor unit flat horizontally and it may also cause a malfunction When carrying place the forks of the forklift into the carrying hole for forklift A rope More than 1 m Protective support Carrying hole for ropes CAUTION Pay special attention when carrying the unit The PP bands PET bands are used for packing It is dangerous to use the PP bands to transport the unit Do not touch the heat ex...

Page 18: ...lation install an anti vibration stand if the area is sensitive to vibra tion or noise Insert the rubber pad of over 10 t between the concrete foundation and the anti vibration pad h Refer to the foundation diagram of the approved plan drawing when installing Foundation Anti vibration pad M12 foundation bolts Anti vibration pad Foundation Model Installation Type A B C D E F G GP W B Ground install...

Page 19: ...e freezing of the heat exchanger resulting in abnormal operations Be sure to remove the pallet wooden support of the bottom of the outdoor unit before welding Not removing the pallet causes hazard of fire during welding Install where it can sufficiently support the weight of the outdoor unit If the support strength is not enough the outdoor unit may drop and hurt people Install where the outdoor u...

Page 20: ...s flows backward inside a building through the indoor unit drain pipes it causes a carbon dioxide poisoning WARNING The drain piping work should be done with a falling gradient of more than 1 50 for better drainage Do not add any shaft tubes to the drain pipes Do not add any traps to the drain pipes If the multiple indoor units share the same drain pipe keep the each rubber hose open to the air Ot...

Page 21: ...or gas leaks from the fuel gas pipes after completing the installation Gas leaks cause hazards such as fire Use a flexible hose when connecting to the outdoor unit There is a risk of gas leaks from a vibration of steel pipes Only licensed installers and service technicians should perform the fuel gas piping Improper installation causes fire and explosion WARNING Shutoff valve Strainer Pressure pur...

Page 22: ...issible Differences in Elevation Applicable to Individual or Series Installation Y branch method Item Range Capacity ratio of indoor unit to outdoor unit 50 130 Minimum capacity of accessible indoor unit 2 3 kW Maximum number of accessible indoor unit by mode 25units 45 kW 31units 56 kW 39units 71 kW 50units 90 kW 56units 101 kW 62units 112 kW 70units 127 kW 78units 142 kW ...

Page 23: ...OUTDOOR UNIT INSTALLATION ENGLISH 23 Y Header Method l 40m Conditional 90m L170m Equivalent Length 200m Header Method L170m Equivalent Length 200m ...

Page 24: ...pipe length after first branch 40 90 a b c d e Length of pipe from each branch 30 Total pipe length from ODU to IDU 640 Permitted height dif ference H Height between the ODU IDU Outdoor unit installation top 50 Outdoor unit installation bottom 35 30 h Between the indoor unit 15 To apply Conditional Application When the outdoor air temp is below 10 C it is limited by 30m ...

Page 25: ... A Bx2 Cx2 Dx2 a b c d e 640 m 4 The length from each indoor unit to the closest branch piping 40 m a b c d e 40m CAUTION If overall equivalent pipe length is more than 90m from outdoor unit to the farthest indoor unit the diameter of the main pipe must be increased After first branch If the diameter of the pipe B is greater than the diameter of the main pipe A the diameter of the pipe B is the sa...

Page 26: ... 1 4 16 54 600 Ø 15 88 5 8 Ø 9 52 3 8 23 78 500 Ø 19 05 3 4 Ø 9 52 3 8 33 112 600 Ø 22 2 7 8 Ø 9 52 3 8 47 160 400 Ø 28 58 1 1 8 Ø 12 7 1 2 71 242 300 Ø 28 58 1 1 8 Ø 15 88 5 8 104 354 800 Ø 34 9 1 3 8 Ø 19 05 3 4 174 593 700 Ø 41 3 1 5 8 Ø 19 05 3 4 45 153 600 Ø 28 58 1 1 8 Ø 15 88 5 8 Ø 28 58 1 1 8 Ø 15 88 5 8 56 191 100 Ø 28 58 1 1 8 Ø 15 88 5 8 Ø 31 8 1 1 4 Ø 19 05 3 4 71 242 300 Ø 31 8 1 1 4 ...

Page 27: ...tion for outdoor units H1 Less than or equal to 0 5 m Permissible length of piping for outdoor units L1 L2 Less than or equal to 7 m CAUTION An additional Y branch joint is required to connect outdoor units in a series When connecting piping in outdoor units piping must level off or be on a gradient towards a slave outdoor unit in order to prevent oil from accumulating in the slave outdoor unit Ot...

Page 28: ...n below Total capacity of indoor unit Pipes mm A Gas pipe Liquid pipe Gas pipe Liquid pipe Less than 6kW Ø 12 7 Ø 6 35 1 6 1 8 1 1 1 3 Less than 16kW Ø 15 88 Ø 9 52 1 6 1 8 1 5 1 7 Bar Copper pipe Clamp handle Red arrow mark Cone Yoke Handle Bar A Inclined Inside is shining without scratches Smooth all round Even length all round Surface damaged Cracked Uneven thickness Improper flaring Piping con...

Page 29: ...e t9 Above t9 Ø 9 52 3 8 Above Ø12 7 Above t13 Above t13 Above t13 Above t13 Gas pipe Ø 9 52 3 8 Above t13 Above t19 Above t19 Above t25 Ø 12 7 1 2 Ø 15 88 5 8 Ø 19 05 3 4 Ø 22 2 7 8 Ø 25 4 1 Ø 28 58 1 1 8 Above t19 Ø 31 75 1 1 4 Above t25 Above t25 Ø 34 9 1 3 8 Ø 38 1 1 1 2 Ø 41 3 1 5 8 Ø 44 45 1 3 4 Ø 50 8 2 Ø 53 98 2 1 8 Above t32 Note 1 General location When the pipe passes through indoors in ...

Page 30: ...ote 3 General location When the pipe passes indoors where the indoor unit is not operated Hall way etc Dormitory school office tel Note 4 Negative condition When below conditions 1 and 2 are met 1 When the pipe passes indoors where the indoor unit is not operated 2 When the humidity is high regionally and there is no air flow in the pipe passing area When installing the outside unit within the out...

Page 31: ...for the outdoor unit piping and branching is used Open close the valve using a wrench Gas pipe Liquid pipe Always be careful not to leak the refrigerant during welding The refrigerant generates poisonous gas which is harmful to human body if combusted Do not perform welding in a closed space Be sure to close the cap of the service port to prevent gas leakage after the work WARNING Gas pipe Liquid ...

Page 32: ...Be sure to vacuum using a vacuum pump Always insulate the piping Insufficient insu lation will result in a decline in heating cool ing performance water dripping from con denser and other problems When connecting the refrigerant pipes make sure the service valve of the outdoor unit is completely closed the factor default setting Do not open the service valve until all refriger ant pipes for the ou...

Page 33: ... rainy day Pipe entrance should be taken side or bottom When removal burr after cutting pipe pipe entrance should be taken down Pipe entrance should be fit ted cap when pass through the walls No dust in the pipe Until the connection is com pleted the plumbing pipe entrance should be strictly controlled Pipe entrance should be taken side or bottom When removal burr after cutting pipe pipe entrance ...

Page 34: ...t side When the internal pressure in pipe is abo ve the atmospheric pressure pinhole is o ccurred and it is a leakage cause Oxide scale Nitrogen 1 Always use the nitrogen not use oxygen carbon dioxide and a Chevron gas Please use the following nitrogen pressure 0 02MPa Oxygen Promotes oxidative degradation of refrigerant oil Because it is flammable it is strictly prohibited to use Carbon dioxide D...

Page 35: ...tion cap Perform the gas pipe liquid pipe connection as follows Gas pipe liquid pipe and common pipes should be purchased locally Wrap wet towel when welding Otherwise it may result in internal damages After welding the elbow and the straight pipe insert the panel into the pipe and keep welding the connected pipes Insert the pipe in the center of the panel hole You must run nitrogen at 20 kPa thro...

Page 36: ...tely Be extra careful not to let the burr into the Y branch Be sure to let nitrogen gas flow in the pipe when welding Otherwise the excessive sludge formed inside the pipe may cause a malfunction of the unit Branch Installation Method A B A B Viewed from point B Horizontal plane 15 C Facing downwards Facing upwards Within 3 Within 3 Horizontal installation Vertical installation Header Branch The i...

Page 37: ...NS BETWEEN INDOOR OUTDOOR UNITS ENGLISH 37 Distribution Method Branch Method The case where only branch pipes are connected to one another Vertical Distribution h Be sure that the branch pipes are attached vertically ...

Page 38: ...must be used Precautions to take during series installation Use a vacuum pump or Inert nitrogen gas when performing leak detection or air purge Do not use compressed air or oxygen or inflammable gas There is a risk of fire or explo sion There is a risk of death injury fire or explosion WARNING LEAK DETECTION Leak detection should be made by pressurizing nitrogen gas to 3 8 MPa 38 7 kgf cm2 Refer t...

Page 39: ...Gas pipe Liquid pipe Gas pipe At least more than 50mm At least more than 50mm At least more than 50mm Insulate the joint area completely ʶ This part is not insulated Transmission cable Transmission cable A Adhesive rubber foam insulation material heat resistant polyethylene foam adhesive tape B Pipe Ⓐ A thermal insulation material Ⓑ Pipe Horizontal pipe support method Clamp hanger support PIPE INS...

Page 40: ...er wall Outer wall exposed Install properly for the liquid pipe and the cover Seal the joint area of the cover using a heat sealing tape locally purchased Insulate the gas pipe in the same way as above Insulate the header branch with the insula tion material as shown in the figure Tape locally purchased Cover ڹ Insulation material locally purchased Liquid pipe ڸ Insulation of the part where pipes ...

Page 41: ...ration is stopped and the compressor is not run Vacuum mode is activated How to Set Vacuum Mode Setting the Vacuum Mode This mode is used for a vacuum operation after removing the refrigerant at the work site to for example replace parts of a compressor or an outdoor unit or to add or replace an out door unit VACUUM AND REFRIG ERANT CHARGE Vacuum Vacuum drying should be made from the serv ice port...

Page 42: ... original refrigerant the refrigerant cycle may malfunction causing damages WARNING Add exact amount of refrigerant calculated by the combination of the installation pipe diameter length and the indoor unit Incorrect amount of refrigerant may cause malfunction of the unit If the additional amount of refrigerant exceeds the range of 10 the compressor burn ing or insufficient indoor unit performance...

Page 43: ...harge kg Calculation of CF value indoor unit Example 4Way Cassette 14 5KW 1ea High static duct 7 3KW 2ea 1Way Cassette 2 3KW 4ea CF 0 64 x 1 0 26 x 2 0 2 x 4 1 96 CF value of indoor unit unit kg Capacity Btu h kW 9k 12k 15k 18k 24k 28k 36k 42k 48k 76k 96k Type 2 8 3 6 4 5 5 6 7 1 8 2 10 6 12 3 14 1 22 4 28 0 Ceiling Concealed Duct Low Static 0 17 0 17 0 17 0 37 0 37 Ceiling Concealed Duct High Sta...

Page 44: ...transmission cable should be used in the terminal block for the outdoor unit transmission 8 For the grounding power cables for the indoor unit use the cables as below A corrosive resistant metal cable with equivalent or higher strength size of annealed copper wire with 1 6mm in diameter A single cord or a single cap tire cable with more than 1 25mm2 cross section A double conductor cable with more...

Page 45: ...hem When connecting the transmission cable between the outdoor and indoor units with shielded wire make sure to connect the shield ground to the grounding screw When connecting to the central control system with shielded wire make sure to connect the shield ground to the grounding screw Cycle POWER Noise Filter Control panel IDU Communication Module Oil Pump Power ECU External PCB ECU Power Starte...

Page 46: ...ar central control 16 4 core wire 4 shielding wire 1 0 1 5 mm2 Power cable current capacity Separation distance More than 100V 10 A 300 mm 50 A 500 mm 100 A 1 000 mm More than 100A 1 500 mm Did you ground the both outdoor and indoor units Insufficient grounding may cause electric shock Only licensed electricians should do the grounding work h For the indoor unit grounding the earth wire is needed ...

Page 47: ... of Outdoor Unit Power Specifications Wire Thickness mm2 Earth Leakage Circuit Breaker ELCB Main power cable wire Branch wire Ground wire 1Unit 3 Ø 380 V3N 60 Hz 2 5 2 5 30A 1 Ø 220 V 60 Hz 2 5 2 5 30A 2Unit 3 Ø 380 V3N 60 Hz 4 0 2 5 4 0 60A 1 Ø 220 V 60 Hz 6 0 2 5 6 0 60A Branch wire Power cable wire between a master and a slave1 outdoor unit minimum of 2 5 mm h The above standards are based on C...

Page 48: ...Dry2 GND B A B B A A 12 V 3 A 4 B 3 A 4 B 3 A 4 B h Caution 1 It may be different according to specification of a voltage h Caution 1 It may be different according to specification of a voltage Install the earth leakage circuit breaker For the indoor unit grounding the earth wire is needed to prevent the electric shock in case of a short circuit the communication problems due to noise and the moto...

Page 49: ...cable Between ODU to IDU Ground Wiring Diagram is not included Power cable wire Branch wire Pull Box Power supply switch Switch leakage current circuit breaker Master Slave Single phase power system Single phase power Between the IDU to Master ODU 3 A 4 B 3 A 4 B 3 A 4 B CN06 COMM TB Dry2 Dry1 CEN IDU ODU GND B A B B A A 12 V The indoor unit grounding needs the ground wire to prevent the indoor un...

Page 50: ...mpatible for example A A and B B h Consider the capacity of all indoor units that are connected Install the ELCB The indoor unit grounding needs the ground wire to prevent the indoor unit short circuit ing to prevent a communication failure due to noise and to prevent a motor current leak age Not connected to piping For communication cables grounding should be done only to Single point ground of t...

Page 51: ...ker Ɠ Caution 1 Single phase power system h Caution 1 It may be different according to specification of a voltage Transmission cable connection between the outdoor and indoor units BUS type Connection of communication cable must be installed like below figure between indoor unit to outdoor unit STAR type Abnormal operation can be caused by commu nication defect when connection of communi cation ca...

Page 52: ...n 50mm between the main power cable and the transmission cable Main power cable Transmission cable between the outdoor and indoor units Earth wire Attachment of insulation sleeve Terminal block for main power supply Outdoor unit terminal block Outdoor unit Indoor unit Dry1 CEN Dry2 GND B A B B A A 12 V Main power cable earth wire connection Transmission cable connection Outdoor Unit Wiring Connect...

Page 53: ...or unit main board After the completion of auto addressing address of each indoor unit is displayed on the cable remote control CH01 CH02 CH03 CH06 displayed as the number of connected indoor units Main board 7 segment Dip switch SW01C auto addressing setup In replacement of the indoor unit PCB always perform the Auto addressing settings again Make sure to perform the reset with the power of all t...

Page 54: ...appear when on off button is pressed on remote control e g CH01 CH02 CH03 etc Finish auto addressing setup The number of the connected indoor units whose auto addressing is completed is displayed for 30 seconds on the 7 segment LED after completing the setup Waiting about 2 7 minutes No Check the connections of transmission cable Yes Completed Turn all the dip switches OFF on the outdoor unit main...

Page 55: ...ast only 2 seconds after applying the power It checks whether the input is properly performed without the bad contact of the dip switch CAUTION Improper setup of the dip switch will cause a malfunction of the unit Main board For the master ODU For the slave ODU if there is only one ODU only apply the settings to the master ODU 7 segment Dip switch SW02C X cancel SW03C ȯ next SW04C ȭ previous SW01C...

Page 56: ...ample When the series model is 127 kW 45 HP 380 V which is a two unit R410A refrigerant 380 V combination of 56 kW 20 HP and 71kW 25 HP 25 20 45 1 38 1 E g Meaning of Symbols Symbol Number Meaning 16 25 16 25 16 50 1 38 125 126 1 Master model capacity Slave model capacity Total capacity Heat Pump 380 V model 220 V 50 Hz model 220 V 60 Hz model High efficiency model Capacity by Models Number Capaci...

Page 57: ...T selector Fn1 OFF pp1 op2 Selected value dis play Setup applica tion N A EEP ROM save Static pressure mode Fn2 OFF pp1 op3 Selected value dis play Setup applica tion N A EEP ROM save Night low noise mode Fn3 OFF pp1 op12 Selected value dis play Setup applica tion N A EEP ROM save Outdoor unit address Fn5 0 255 Selected value Setup applica tion N A EEP ROM save Snow removal forced defrost Fn6 OFF ...

Page 58: ...p1 or op2 on 7 segment using and buttons and press the button Cool Heat selector setup Function setting Switch control Function Setup Switch top Switch Bottom OFF op1 ventilation function op2 indoor unit oFF function Right Left Not operate Cooling Cooling Right Right Not operate Heating Heating Left N A Not operate Fan mode Off CAUTION Ask the licensed installer for the function setup when install...

Page 59: ... pressure has been applied like using duct at fan discharge of the outdoor unit Mode Setup Fan Rotation Setup Dip switch 5 of the outdoor unit ON Display Func on 7 segment using and buttons and press the button Display Fu2 on 7 segment using and buttons and press the button Display either OFF op1 or op2 on 7 segment using and buttons and press the button Operate it at the set RPM Volume 3Phase 380...

Page 60: ... buttons and press the button Start Night Low Noise Function Operate at the preset RPM through standby after detecting the highest temperature of the outdoor unit Finish Night Low Noise Function disabled during standby after operating the night low noise function Step Standby Hr Operation Hr op1 8 9 op2 6 5 10 5 op3 5 12 op4 8 9 op5 6 5 10 5 op6 5 12 op7 8 9 op8 6 5 10 op9 5 12 op10 Continuous ope...

Page 61: ...of the outdoor unit ON Display Func on 7 segment using and buttons and press the button Display Fn5 on 7 segment using and buttons and press the button Display one of 0 255 on 7 segment using and buttons and press the button Outdoor Unit Address Setup CAUTION Ask the licensed installer for the function setup when installing the outdoor unit If the central control system is not installed there will...

Page 62: ...using and buttons and press the button Display Fn6 on 7 segment using and buttons and press the button Display either OFF or op1 on 7 segment using and buttons and press the button Select a mode CAUTION Ask the licensed installer for the function setup when installing the outdoor unit Set it OFF if you do not use the function Mode Setup Settings Modes OFF None N A op1 Start forced defrost snow rem...

Page 63: ...sure Change Display either OFF op1 op4 on 7 segment using and buttons and press the button CAUTION Ask the licensed installer for the function setup when installing the outdoor unit Set it OFF if you do not use the function The capacity may decline or the power consumption may increase Target Pressure Setup mode Purpose Condensing temperature variation Evaporating temperature variation op1 Capacit...

Page 64: ...ause of error Indoor unit related error 1 2 3 4 5 6 9 10 11 Air temperature sensor error of indoor unit Inlet pipe temperature sensor error of indoor unit Communication error between cable remote control and indoor unit Indoor drain error Communication error between out door and indoor units Outlet pipe temperature sensor error of indoor unit Indoor unit EEPROM error Indoor unit BLDC Motor Feedbac...

Page 65: ...ogged pipe Unstable input voltage Insufficient refrigerant or hot gas bypass error EEV error Discharge pressure increase due to compres sor discharge pressure error or clogged pipe Inlet pipe is clogged or refrigerant is insuffi cient Compressor capacity control valve error or compressor error valve tension error Compressor discharge temperature sensor disconnection or short circuit Low pressure s...

Page 66: ...rror Failing to receive Slave Unit signal at main PCB of Master Outdoor Unit Communication error with the Fan PCB in the Inv PCB H W excess current of Fan PCB Fan PCB detects the DC Link voltage drops below the limit voltage Communication error with the Main PCB in the Fan PCB Liquid pipe temperature sensor disconnection or short circuit Supercooling outlet temperature sensor dis connection or sho...

Page 67: ...pressor No 1 liquid compress and com bustion damage engine tracking error Compressor No 2 liquid compress and com bustion damage engine tracking error Compression ratio error Engine water sensor is disconnected contact error Throttle sensor is disconnected contact error Map sensor is disconnected contact error Ari sensor error Oil hydraulic pressure switch error It occurs when the switch is set to...

Page 68: ... a switch designed to restrict the motion of the fuel gas valve In order to cancel it move the switch to STANDBY position If the engine operation selecting switch SW02 is positioned in STOP OFF it will restrict the engine operation and stop it It is a switch designed to restrict the operation of the engine In order to cancel it move the switch to STANDBY position CAUTION Error message 157 If the o...

Page 69: ...ne checkup Start performance checkup Noise vibration checkup Harness system checkup Mixer cleansing Valve clearance checkup adjust if necessary Coolant system checkup Leakage detection Gravity measurement supplement supplement Engine oil system checkup Oil leak detection change refill Exhaust gas system checkup Exhaust gas line leakage detection Fuel gas system checkup Safety device operation chec...

Page 70: ...ter together Use the authentic product of the company for the engine oil oil filter replacement For the engine oil replacement be sure to replace the engine oil pan of engine room and the oil of oil tank together Refer to the following table to prepare the tools and parts necessary for the replacement mainte nance Prepare tools and oil oil filter preparation Refill the engine oil Drain out the eng...

Page 71: ...riction of the outdoor unit prior to maintenance in the Self diagnosis Remove the cap from the top of the oil tank and drain out the oil with an oil filter pump as shown in the picture Perform the same for the level sensing tank Dispose of the waste oil into a waste oil container Dispose of the waste oil from inside the engine into the waste oil container after removing a hose on the bottom Be sur...

Page 72: ...ing it with an oil filter wrench Figure 1 Oil filter installation Apply a thin coat of oil to the O ring of the new oil filter Figure 2 Put the oil filter in the oil filter frame located in the lower part of the engine side and tighten it up according to the designated tightening force Figure 3 Tightening force 21 6 24 5 N m 2 2 2 5 kgf m Wipe the dropping oil with a dry cloth Figure 4 Oil filter ...

Page 73: ...d oil oil filter preparation Refill the engine oil Drain out the engine oil Check the engine operation Check the oil level Reset the oil system operation timer Replace the engine oil filter Figure 5 Engine oil refill CAUTION Make sure to draw off any excessive amount to maintain the designated appropriate level Overfilling can cause a problem for the engine and result in malfunction Wipe the spill...

Page 74: ...fer to Operation restriction of the outdoor unit prior to mainte nance in the Self diagnosis Pull out the oil level gauge from the side of the engine and clean the gauge with a dry cloth Insert the gauge all the way in and pull it out to check the oil level Check the oil level if it is between the maximum level MAX and the minimum level MIN If the oil level is above MAX draw some oil off Prepare t...

Page 75: ...he engine operation Check the oil level Reset the oil system operation timer Replace the engine oil filter Make sure to reset the timer only after the engine oil change filter and air cleaner replacement should be done together Dip switch outdoor unit setup When OiL displays press the button for 3 seconds When no sign turns on press the buttons to display init on the 7 segment And then press the b...

Page 76: ...se the authentic products from LG electronics for the ignition plug replacement Replacement procedure is as follows Refer to the table below when preparing the tools and part required for the replacement mainte nance Necessary parts and tools Specifications and Stock No Quantity Remarks Ignition plug 4 LG electronics authentic products Screwdriver 1ea Plug wrench Size 16mm 1 Wire brush 1 Torque wr...

Page 77: ...rque N m kgf m Ignition plug 24 5 34 3 2 5 3 5 Figure 2 Ignition plug separation Figure 3 Tightening an ignition plug Check the engine operation Flip on the ENG_STOP switch SW02 and the GAS OFF selecting switch SW01 located in the external board of the outdoor unit control panel towards the Upward to turn ON If the indoor user is selecting the operation mode the outdoor unit can be operated by onl...

Page 78: ...rm G of 1 cylinder and a valve cap cylinder 1 is the compression top dead center When there is a gap between the air intake exhaust rocker arm H of cylinder 4 and the valve cap cylinder 4 is the com pression top dead center Therefore make sure to have the cylinder 1 be the compression top dead center by rotating the crank pulley 1 full revolution CAUTION In order to cool down completely stop the u...

Page 79: ...Adjust the exhaust valve of the cylinder 2 h The valve clearance adjustment proceeds as follows Check if the push rod is easily moved by hand and unfasten the check nut Loosen the jack bolt a little bit using a screwdriver and insert the THICKNESS GAUGE Turn the jack bolt to adjust the valve clearance After completing the adjustment fasten the jack bolt and the check nut Figure 3 The valve clearan...

Page 80: ...e engine rocker cover and the high tension wire back together Rocker cover tightening torque 10 8 12 8N m 1 1 1 3 kg m Check the engine operation Flip on the ENG_STOP switch SW02 and the GAS OFF selecting switch SW01 located in the external board of the outdoor unit control panel towards the Upward to turn ON Check for any abnormal sound during the operation If there is an abnormal sound check the...

Page 81: ...er Replace the valve if damaged h What is a Vacuator valve It is a device to automatically discharge any dust particles inside the air cleaner Replace the used filter element with a new one Figure2 Figure3 Wipe off the dust insider the air cleaner before replacing Put the cover back together and tighten the clamp When installing the cover always keep the Vacuator valve facing downward Figure 4 CAU...

Page 82: ...nt cleaning inside Figure 3 Element replacement Figure 4 tightening a clamp CAUTION The element has a drying system Do not use oil If the unit is installed in the area of heavy dust or oil replace the air cleaner more fre quently Figure 1 Loosening a clamp Figure 2 Removal of the used element cleaning inside ...

Page 83: ...d h Compressor drive belt replacement The drive belt should be replaced every 10 000 hours or 5 years whichever comes first Use authentic products from LG electronics for the drive belt replacement caution Stop the engine by controlled shutdown before the maintenance refer to Opera tion restriction of the outdoor unit prior to maintenance in the Self diagnosis Refer to the table below when prepari...

Page 84: ...apply onto the belt as a bracket declines Check if the belt is out of the pulley Adjust the tension preventing the belt from slipping out of the pulley 2 Adjust the tension until the proper tension tension limit is achieved Belt tension 1 400 1 500N initial You can measure the current tension more easily if you use ultra sound tension meter 3 Belt tensioning is not adjusted to 1 First adjust the t...

Page 85: ...board of the outdoor unit control panel towards the Upward to turn ON Check for any abnormal sound during the operation Check for an abnormal sound or wobbling belt during engine operation Readjust the tension if any problems appear CAUTION During the belt replacement be careful not to get your fingers caught in between the belt and the pulley Do not grab the belt and perform the replacement work ...

Page 86: ...prior to maintenance in the Self diagnosis Refer to the table below when preparing the tools and part required for the replacement mainte nance Necessary parts and tools Specifications and Stock No Quantity Remarks Coolant antifreeze solution Ethylene glycol 100 Moderate amount Distilled water 100 distilled water Moderate amount Dry cloth Some a few Measuring container 1 5 2 L 1 Coolant exclusive ...

Page 87: ... 1 Coolant level check Figure 2 Coolant refill Coolant concentration meter Tester gradation markings 40 5 CAUTION Be careful not to let any coolant in the mouth or eyes during the coolant refill Refill the coolant while the outdoor unit is stopped by controlled shutdown Operating the unit while refilling a coolant may cause injury ...

Page 88: ...ng the tools and part required for the replacement mainte nance Necessary parts and tools Specifications and Stock No Quantity Remarks Drain filter stones replacement Moderate amount Calcite 4Kg Cleansing liquid Moderate amount 500 cc Packing system Large small 1ea Container 1 Long metal rod iron rod Length 30 cm 1 Socket wrench Size 10 mm 1 Dry cloth Some a few Drain filter stones maintenance ref...

Page 89: ...ANCE ENGLISH 89 Figure 1 Remove the bolts Figure 2 Cleansing liquid Figure 3 Clean the stones Figure 6 Tighten the bolts Figure 5 Check for the O ring Figure 4 Refill the stones Drain filter stones maintenance refill ...

Page 90: ...90 ENGLISH ...

Page 91: ......

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