LG LV-C362FLA0 Svc Manual Download Page 24

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LGE Internal Use Only

Outdoor

Indoor

Main

power source

Switch box

Circuit Breaker

Main terminal board

Control terminal board

Cord
clamper

Cover control

Control terminal board

Cord damper

ELECTRICAL WIRING

Perform the electrical wiring work according to the electrical wiring
connection.

• All wiring must comply with local requirements.

• Select a power source that is capable of supplying

the current required by the air conditioner.

• Use a recognized circuit breaker between the pow-

er source and the unit. A disconnection device to
adequately disconnect all supply lines must be fit-
ted.

• Capacity of circuit breaker

INDOOR UNIT

• Remove side panel cover for electrical connection

between the indoor and outdoor unit.
(Remove crews

➀

• Use the cord clamper to fix the cord.

OUTDOOR UNIT

• Remove the control cover for wiring connection.
• Use the cord clamper to fix the cord.
• Earthing work

Connect the cable of diameter 1.6mm

or more to

the earthing terminal provided in the control box
and do earthing.

Please check !!

WIRING CONNECTION

Capacity

1 Phase

3 Phase

36K BTU/h

35A

42K BTU/h

40A

48K BTU/h

50A

25A

60K BTU/h

50A

35A

Summary of Contents for LV-C362FLA0

Page 1: ...loded View MODEL LV C362FLA0 LV C422FLA0 LV C482GLA0 LV C602HLA0 LV C48BGLA0 LV C60BHLA0 CAUTION Before Servicing the unit read the safety precautions in General SVC manual Only for authorized service personnel Internal Use Only http biz lgservice com ...

Page 2: ...es to the Indoor Unit 25 Connecting Pipes to the Outdoor Unit 27 Checking the Drainage 27 Connecting Cables between Indoor Unit and Outdoor Unit 28 Air Purging of the Connecting Pipes and the Indoor Unit 31 Operation 32 3 way Valve 33 Cycle 38 Troubleshooting 41 Exploded View 43 2 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Page 3: ...e stopped after 1 2 3 4 5 6 7 hours The fan is switched to intermittent or irregular operation The fan speed is automatically switched from high to low speed The louver can be set at the desired position or swing up and down automatically The setting temperature indoor fan speed and desired operation made are automatically set by fuzzy rule Indoor Unit Operation ON OFF by Remote controller Sensing...

Page 4: ...ay Temperature Setting Setting the Time or Timer Timer Selection Timer Setting Timer Cancel Sleep Operation Airflow Direction Control Cooling model only TEMPERATURE LOW HIGH Low Med High CHAOS Cooling Operation Mode Auto Operation Mode Fan Operation Mode ON OFF SET CANCEL High 39 C LOW 11 C OFF ON OFF ON Cancel Sleep Mode Timer ON or Timer OFF 1 2 3 4 5 6 7hr Off Timer Fan Operates without cooling...

Page 5: ...imension Indoor W H D inch mm Outdoor W H D inch mm Stuffing Quantity With Without S Parts 20 40ft LV C362FLA0 LV C422FLA0 LV C482GLA0 9 072 10 551 10 584 12 309 12 096 1 4067 36 000 42 000 48 000 3 950 4 400 5 100 18 5 19 5 20 90 90 90 1 220 60 1 220 60 1 220 60 96 5 97 97 2 29 2 66 2 18 2 55 2 27 2 64 9 1 8 5 9 18 30 18 30 18 30 4 26 4 91 4 96 Capillary Tube Capillary Tube Capillary Tube 1 830 6...

Page 6: ...mm Outdoor W H D inch mm Stuffing Quantity With Without S Parts 20 40ft LV C602HLA0 LV C48BGLA0 LV C60BHLA0 15 120 17 584 12 096 14 067 15 120 17 584 60 000 48 000 60 000 6 300 5 200 6 300 29 14 5 18 2 101 90 124 1 220 60 3 220 60 3 220 60 98 8 92 6 89 3 2 33 2 72 2 22 2 57 2 14 2 48 9 25 8 8 8 5 18 30 18 30 18 30 7 67 5 2 7 1 Capillary Tube Capillary Tube Capillary Tube 4 050 145 4 R22 3 800 134 ...

Page 7: ...served Only for training and service purposes LGE Internal Use Only Dimensions 90 400 94 2 3 94 A B C 650 400 90 1 1 1 Indoor Unit Dimension Capacity 36K BTU h 1550 1362 236 42K BTU h 1550 1362 236 48K BTU h 1550 1362 272 60K BTU h 1550 1362 292 A B C ...

Page 8: ...ronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 2 Outdoor Unit H W D H W D 36K 42K 48K 60K MODEL DIM W mm 870 900 900 900 H mm 800 1 220 1 220 1 220 D mm 320 370 370 370 36K 42K 48K 60K ...

Page 9: ...t line length of 7 5m If 36K Model is installed at a distance of 15m 225g of refrigerant should be added 15 7 5 x30g 225g INDOOR UNIT OUTDOOR UNIT HEAT EXCHANGER CONDENSER HEAT EXCHANGER CONDENSER COMPRESSOR GAS SIDE LIQUID SIDE CAPILLARY TUBE 36K 5 8 3 8 7 5 15 5 10 30 42K 3 4 3 8 7 5 15 5 10 35 48K 3 4 1 2 7 5 15 5 10 40 60K 3 4 1 2 7 5 15 5 10 45 Additional refrigerant g m Pipe size Diameter ø ...

Page 10: ... YL BK F1 BK WH OR CM BK BL WH GN YL To the Indoor unit WH GN YL 2 3 L N TMo 1 N 2 L 3 4 5 Co OR OR YL BK FMo BK WH RD R C S Cr PTCR 1 2 3 4 5 6 7 8 9 Low Ambient PCB PIPE TH FUSE T3 15A TRIAC OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM 3854A20135S TERMINAL BLOCK 30A White Wire NEUTRAL SOCKET SOCKET Ground BLOWER MOTOR White Wire Run Cap Brown Wire STEP MOTOR 1 STEP MOTOR 2 DISPLAY ROOM SENSOR FR...

Page 11: ...31 32 B A WH OR BK YL FMo1 49FMo FMo2 49FMo Co TM 52C Co BK YL BK OR OR BK BK RD Cr S R C WH WH WH WH BK To the indoor unit BL WH PTCR OPTION GN YL TMo F1 BK BK WH GN YL OR OR OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM 3854A20026J TERMINAL BLOCK 30A White Wire NEUTRAL SOCKET SOCKET Ground BLOWER MOTOR White Wire Run Cap Brown Wire STEP MOTOR 1 STEP MOTOR 2 DISPLAY ROOM SENSOR FREEZE SENSOR LINE ...

Page 12: ...round BLOWER MOTOR White Wire Run Cap Brown Wire STEP MOTOR 1 STEP MOTOR 2 DISPLAY ROOM SENSOR FREEZE SENSOR LINE Fuse C L SWITCH BOX Red Wire Red Wire Red Wire Black Wire Blue Wire Blue Wire COMM HIGH MED LOW Red Wire 1 2 3 TO OUTDOOR UNIT R TM POWER SUPPLY S T N BK BK WH WH WH RD 52C 63H2 1 2 3 4 5 6 31 32 B A FMo 49FMo FMo 49FMo YL BK OR OR BK W T3 U T1 V T2 RD WH CM SV YL BK OR BK BK RD Co Co ...

Page 13: ...he louver up and down automatically and to set it at the desired position The procedure is as the following 1st Press the ON OFF Button to operate the product 2nd Press the Airflow Direction Control Button to swing the louver up and down automatically 3nd Repress the Airflow Direction Control Button to set the louver as the desired position MODE0 1 2 3 4 5 6 7 135 Cooling MODE MODE MODE MODE MODE ...

Page 14: ... Low Low Low COMPRESSOR ON OFF ON OFF ON 30 minutes 30 minutes 1 C 1 C Operation Condition Intake air Temperature Setting temperature Fan speed Air Direction Control Over 26 C 25 C Over 24 C below 26 C Intake air 1 C Over 22 C below 24 C Intake air 0 5 C Over 20 C below 22 C intake air temperture below 20 C 20 C Over 20 C below 30 C Fuzzy control below 20 C 20 C over 30 C 30 C When Auto Operation ...

Page 15: ...l button louver moves as following cycle MODE0 MODE1 MODE2 MODE3 MODE4 MODE5 MODE6 MODE9 CLOSED End Start Intake Air temp OUTDOOR FAN COMP INDOOR FAN Setting fan speed LOW Cooling on temp Setting temp 0 5 Setting CHAOS Natural wind Setting temp Cooling off temp Setting temp 0 5 CHAOS Natural wind COMP ON COMP OFF GRAPH of Natural wind by the CHAOS logis During Cooling operation 6 Natural wind by C...

Page 16: ...n of the evaporator pipe from frosting If the temperature of the indoor coil is below 0 C after 7 minutes from starting the compressor the compressor and the outdoor fan is stopped and then after 3 minute delay of the compressor and the temperature of the indoor coil is over 7 C the compressor and the outdoor fan is reoperated Indoor fan operates at low speed comp OFF or at selected speed comp ON ...

Page 17: ...ly Note For normal operation after checking by test mode you should press SW1 nine times for resetting or reconnect the power cord Coolling Soft Dry Fan Heating Timer Mode Sleep Mode Outdoor Unit Operating Operation Indicator Timer Indicator Sleep Timer Indicator Outdoor Unit Operation Cooling Model Display Function ...

Page 18: ... should not be any animals or plants which could be affected by hot air discharged Ensure the spaces indicated by arrows from the wall ceiling fence or other obstacles 3 Piping length and the elevation If 36K Model is installed at a distance of 15m 225g of refrigerant should be added 15 7 5 x 30g 225g Capacity is based on standard length and maximun allowance length is on the basis of reliability ...

Page 19: ... unit leaning to a drainage hole side as a figure for easy water drainage A place where the unit will be leveled and that can support the weight of the unit A place where the unit can withstand its vibration A place where service can be easily performed CASE 1 POSITION OF SUSPENSION BOLT CASE 2 POSITION OF CONSOLE BOLT Unit mm 90 400 94 2 3 94 A 650 400 90 B C 1 1 Suspension bolts Spring washer Ma...

Page 20: ...lts to the set anchor firmly Secure the installation plates onto the suspension bolts adjust level roughly using nuts washers and spring washers Opening the side panel method Step1 Remove screw Step2 Lift side panel upward slightly Step3 To move side panel along arrow as shown 1 Set anchor Old building Step1 Step2 Step3 New building 2 Plate washer 3 Spring washer 4 Nut 5 Suspension bolts Tighten t...

Page 21: ...nvertible type air conditioner 2 Minimum thickness of the insulation for the connecting pipe shall be 7mm 3 If the Installation Plates are fixed to horizontal line the indoor unit after installing will be declined to the bottomside Front of view The unit must be horizontal or declined to the drain hose connected when finished installation The unit must be declined to the bottomside of the unit whe...

Page 22: ... comply with local requirement REFRIGERANT PIPE Insulate and tape both the gas piping and liquid piping After all workings are finished check the working and operation Air distribution Is the air circulation good Drain Is the drainage smoothly and no sweating Gas leakage Is the piping connection correctly Wiring Is the wiring connection correctly Lock bolt Is the lock bolt of compressor loosened T...

Page 23: ...ollowing location A place where the air conditioner can get good ventilation A place where it shall not annoy the neighbors A place where the unit shall be leveled and that can support the weight of unit and withstand its vibrations Keep a maintenance space Use two spanners when connecting the refrigerant pipe to the unit Make a bend with a radius as large as possible Perform air purge with R 22 o...

Page 24: ...ed by the air conditioner Use a recognized circuit breaker between the pow er source and the unit A disconnection device to adequately disconnect all supply lines must be fit ted Capacity of circuit breaker INDOOR UNIT Remove side panel cover for electrical connection between the indoor and outdoor unit Remove crews Use the cord clamper to fix the cord OUTDOOR UNIT Remove the control cover for wir...

Page 25: ...remove burrs in order to avoid to let burrs drop in the tubing 3 Putting nut on Remove flare nuts attached to indoor and out door units than put them on pipe tube having completed burr removal Not possible to put them on after flaring work 4 Flaring work Carry out flaring work using flaring tool as shown below Firmly hold copper tube in a bar or die as indicat ed dimension in the table above 5 Che...

Page 26: ... serves to connect straight pipes generally using ready made sockets While brazing pro tect piping against heat with wet cloth to avoid damaging valve packing or burning thermal insulator with burner heat While brazing blow inert gas nitrogen gas or carbonic gas to prevent formation of oxidation film in cop per piping otherwise the refrigerant circuit will clog The blowing of nitrogen gas or carbo...

Page 27: ...until the wrench clicks When tightening the flare nut with torque wrench ensure the direction for tightening follows the arrow on the wrench 1 Checking the Drainage 1 Remove the Air Filter To remove air filter take hold of tab and pull slightly upwards 2 Check the drainage Spray one or two glasses of water upon the evaporator Ensure that water flows drain hose of indoor unit without any leakage To...

Page 28: ...cord is damaged it must be replaced by a special cord or assembly availible from the manufacturer of its service agent The connecting cable connected to the indoor and outdoor unit should be complied with the following specifications Rubber insulation type H05RN F approved by HAR or SAA CAUTION 20mm GN YL NORMAL CROSS SECTIONAL AREA 0 75mm2 36K 42K 1 25mm2 48K 60K 20mm GN YL Capacity 36K BTU h 42K...

Page 29: ...ng of electrical fittings are liable to come loose from vibrations to which the unit is subjected during the course of transportation Check them and make sure that they are all tightly fastened If they are loose it could give rise to burn out of the wires 4 Specification of power source 5 Confirm that electrical capacity is sufficient 6 Be sure that the starting voltage is maintained at more than ...

Page 30: ...ings gathered by taping along the exterior wall and fix it onto the wall by saddle or equivalent 2 Tape the Pipings and Connecting cable from bottom to top 3 Form the pipings gathered by taping along the exterior wall and make the trap prevent water from entering into the room 4 Fix the pipings onto the wall by saddle or equivalent In case of the Outdoor unit being installed below position of the ...

Page 31: ...d side valve and the gas side valve are set to the closed position 2 After connecting the piping check the joints for gas leakage with gas leak detector 3 Remove the service port nut and connect the gauge manifold and the vacuum pump to the service port by the charge hose 4 Vacuum the indoor unit and the connecting pipes until the pressure in them lowers to below 76cmHg 5 Remove the valve stem nut...

Page 32: ...lect the operation mode ON OFF TIMER BUTTONS Used to set the time of starting and stopping operation TIME SETTING BUTTONS Used to adjust the time TIMER SET CANCEL BUTTONS Used to set the timer when the desired time is obtained and to cancel the Timer operation AIR FLOW DIRECTION START STOP BUTTON Used to stop or start louver movement and set the desired up down airflow direction SLEEP MODE AUTO BU...

Page 33: ... operation and wait for 3 minutes then connect the charge set to the service port of the 3 way valve Connect the charge hose to the service port 4 Air purging of the charge hose Open the low pressure valve on the charge set slightly to air purge from the charge hose 5 Set the liquid side valve to the closed position 6 Operate the air conditioner in cooling mode and stop it when the gauge indicates...

Page 34: ...s After purging the air use a torque wrench to tighten the flare nut on liquid side valve 4 Check for gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the gas cylinder and discharge the refrigerant until the gauge indicates 3 to 5 kg cm2 g 6 Disconnect the charge set and the gas cylinder and set the 2 way and 3 way valves to the open position B...

Page 35: ...rvice port 3 Open the valve Lo side on the charge set and discharge the refrigerant until the gauge indicates 0 kg cm2 G If there is no air in the refrigerant cycle the pressure when the air conditioner is not running is higher than 1 kg cm2 G discharge the refrigerant until the gauge indicates 0 5 to 1 kg cm2 G if this is the case it will not be necessary to apply a evacuatin Discharge the refrig...

Page 36: ...rm that the gauge needle has moved toward 76 cmHg vacuum of 4 mmHg or less 3 Close the valve Lo side on the charge set turn off the vacuum pump and confirm that the gauge needle does not move approxima tely 5 minutes after turning off the vacuum pump 4 Disconnect the charge hose from the vacuum pump Vacuum pump oil If the vacuum pump oil becomes dirty or depleted replenish as needed Lo Open Open V...

Page 37: ...rant it can be charged with a little at a time approximately 150g each time while operating the air conditioner in the cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat the procedure pumping down pin 4 Immediately disconnect the charge hose from the 3 way valve s service port Stopping partway will allow the gas to be discharged If the system has been char...

Page 38: ...r for leakage On checking the service valve of main service port must be closed this test is only for checking whether pipe connection is ok or not 5 If there is no leakage discharge R22 in piping completely into tank for retrieving Complete discharge is needed for vacuuming If leakage is found please fasten the joint more tightly 6 After closing the valve of charging hose disconnect the tank and ...

Page 39: ...such as retrieving tank opening the valve of charging hose gas side slightly and then close it tightly 3 Operate the air conditioner for 10 15 min until cycle is stabilized 4 Close the spindle of service port liquid side high pressure and wait till pressure of gas side low pressure drops below 0kgf cm2 5 After the needle of gage indicates below 0 kgf cm2 close the valve of gas side quickly and tur...

Page 40: ... of refrigerant it can be charged with a little at a time approximately 150g each time while operating the air conditioner in the cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat the procedure 4 Immediately disconnect the charge hose from the 3 way valve s service port Stopping partway will allow the gas to be discharged If the system has been charged wi...

Page 41: ...e 4 Power on but compressor Room temp set point Adjust on hand set will not function Relay on PCB Replace relay or PCB Comp contactor If power on contactor coil replace contactor Comp overload Re set check amps and set point Indoor sensor de ice See control functions Comp internal overload Allow comp to cool down check gas Compressor terminals Check for good connection 5 Power on but outdoor De ic...

Page 42: ...ir recirculation 12 High discharge pressure Indoor sensor faulty Replace cooling cycle Dirty condenser coil Clean Gas overcharge Reduce charge Air recirculation Move unit Faulty motor Replace Cap tube blocked Replace 16 System not cooling PCB relay Replace or change PCB Low gas charge Add gas and leak test 17 High suction low Reversing valve sticking Replace discharge pressure 18 Outdoor coil icin...

Page 43: ...ervice purposes LGE Internal Use Only Exploded View 1 Indoor Unit Models LV C362FLA0 LV C422FLA0 LV C602HLA0 LV C60BHLA0 146811 330871 235450 354212 147581A W48300 147590 147582 147581B 336610 135303 148000A 148000B 132100A 249310 145200 132100B 346810 359012A 152302 268711 359012B ...

Page 44: ...Only for training and service purposes LGE Internal Use Only 2 Indoor Unit Models LV C482GLA0 LV C48BGLA0 146811 330871 235450 354212 147581A W48300 147590 147582 147581B 336610 135303 148000A 148000B 132100A 249310 145200 132100B 346810 359012 152302 268711 ...

Page 45: ...ved Only for training and service purposes LGE Internal Use Only 3 Indoor Unit Models LV C482GLA0 LV C48BGLA0 146811 330871 354212 147581A W48300 147590 147582 147581B 336610 135303 148000A 148000B 132100A 249310 145200 132100B 346810 359012 152302 268711 ...

Page 46: ...ng and service purposes LGE Internal Use Only 4 Outdoor Unit Models LV C362FLA0 435300 137213A 435512 435301 437210 349480 430411 435511 268711F 554031 546810 349600 559010 447910 552112 W0CZZA W0CZZB 552111 137213B 566001 649950 552203A 552203B 548490 554160 352113 267110 ...

Page 47: ...d service purposes LGE Internal Use Only 5 Outdoor Unit Models LV C422FLA0 LV C482GLA0 LV C602HLA0 LV C48BGLA0 LV C60BHLA0 435512 546810 349600 447900 649950 430411 437212 552203B 548490 552203A 435301 559010 137213 554031 W0CZZA W0CZZB 435511 437210 554160 352113 552111 267110 ...

Page 48: ...d service purposes LGE Internal Use Only 6 Outdoor Unit Models LV C422FLA0 LV C482GLA0 LV C602HLA0 LV C48BGLA0 LV C60BHLA0 435512 546810 349600 447900 649950 430411 437212 552203B 566001 552203A 435301 559010 137213 554031 W0CZZA W0CZZB 435511 437210 554160 352113 552111 267110 ...

Page 49: ...P NO 3828A20172X February 2008 ...

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