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Copyright ©2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

INDOOR FAN

Low Fan

Low Fan

Intake Air temp.

Setting temp. +1.0˚C

(Compressor ON)

Setting temp. -0.5˚C

(Compressor OFF)

Setting temp.

2min.58sec.

2min.58sec.

10min.

10min.

7min.

Within 7min. Cooling

Cooling

OUTDOOR FAN

COMPRESSOR

Selected

Fan

Selected

Fan

ON

ON

ON

ON

OFF

OFF

OFF

OFF

ON

ON

OFF

OFF

ON

ON

OFF

OFF

ON

ON

OFF

OFF

7. Soft Dry Operation

• During Soft Dry Operation, the compressor ON temperature is the setting temperature plus 1°C, the compres-

sor OFF temperature is the setting temperature minus 0.5°C.

• When the room temperature rises over the compressor ON temperature, the operation mode is switched to the

cooling mode.

• When the room temperature falls between the compressor ON temperature and OFF temperature, the opera-

tion mode is switched to the Soft Dry Operation.
In this temperature range, 10min. Dry Operation, 7min operation OFF. During 10min Dry operation, if the room
temperature falls below compressor OFF temperature, Compressor OFF.

• In micom dehumidify mode, control of fan speed is as following.

8. Protection of the evaporator pipe from frosting

If the te

mperature 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 fa

n operates at low speed (comp. OFF) or at selected speed (comp. ON)

9. Test Operation

• When pressing forced operation switch about 3 seconds, the unit operates in cooling mode at high speed fan

regardless of room temperature and resets in 18 min.

• During test operation, if remote controller signal is received, the unit operates as remote controller sets.

10. Auto Restarting Operation

• When the power is restored after a sudden power failure while in appliance operation, the mode before the

power failure is kept on the memory and the appliance should be on the automatically operates in the mode
on the memory.

• Operation Mode that is kept on the memory

- State of Operation ON/OFF
- Operation Mode/Setting Temp/Selected airflow Speed
- Sleep Timer Mode/Remaining Time of Sleep Timer(unit of hour)

• If no input by the remote controller or no switching of the slide switch within 7 hr after the appliance operates

by the Auto Restarting operation, the appliance is forced to stop at the moment of 7-hr elapse.

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Содержание LV-C362FLA0

Страница 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 ...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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 ...

Страница 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 ...

Страница 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 ...

Страница 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...

Страница 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 ...

Страница 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 ...

Страница 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 ...

Страница 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 ...

Страница 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...

Страница 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 ...

Страница 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 ...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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 ...

Страница 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 ...

Страница 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 ...

Страница 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 ...

Страница 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 ...

Страница 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 ...

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

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