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LG

Room Air Conditioner

SERVICE MANUAL

LG

MODELS: LAN091CNP (ASNC091F2G0)

LAU091CNP (ASUC091FUG0)
LAN121CNP (ASNC121F2G0)
LAU121CNP (ASUC121FUG0)
LAN091HNP (ASNH091F2G0)
LAU091HNP (ASUH091FUG0)
LAN121HNP (ASNH121F2G0)
LAU121HNP (ASUH121FUG0)
LA090CPI (ASNC091F2G0)
LA090CPO (ASUC091FUG0)
LA120CPI (ASNC091F2G0)
LA120CPO (ASUC091FUG0)
LA090HPI (ASNH091F2G0)
LA090HPO (ASUH091FUG0)
LA120HPI (ASNH121F2G0)
LA120HPO (ASUH121FUG0)

CAUTION

website http://www.lgservice.com

• BEFORE SERVICING THE UNIT, READ THE SAFETY

PRECAUTIONS IN THIS MANUAL.

• ONLY FOR AUTHORIZED SERVICE PERSONNEL.

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Содержание ARTCOOL LAN091HNP

Страница 1: ... ASUH091FUG0 LAN121HNP ASNH121F2G0 LAU121HNP ASUH121FUG0 LA090CPI ASNC091F2G0 LA090CPO ASUC091FUG0 LA120CPI ASNC091F2G0 LA120CPO ASUC091FUG0 LA090HPI ASNH091F2G0 LA090HPO ASUH091FUG0 LA120HPI ASNH121F2G0 LA120HPO ASUH121FUG0 CAUTION website http www lgservice com BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL ONLY FOR AUTHORIZED SERVICE PERSONNEL ...

Страница 2: ... cable to the Indoor unit 24 Connection method of the connecting cable Example 25 Checking the drainage and forming the pipings 26 Checking the drainage 27 Forming the piping 28 AIR PURGING 29 Air purging 29 Charging 31 Panel front assembly 32 Test running 33 How to replace picture photograph 35 Operation 36 Functions 36 The function of main control 37 Display Function 43 Self diagnosis Function 4...

Страница 3: ...ly Be sure not to do Be sure to follow the instruction Installation Do not use damaged power cords plugs or a loose socket There is risk of fire or electric shock For electrical work contact the dealer seller a qualified electri cian or an Authorized Service Center There is risk of fire or electric shock Always use the power plug and socket with the ground terminal There is risk of electric shock ...

Страница 4: ...the installation area does not deteriorate with age If the base collapses the air condi tioner could fall with it causing property damage product failure and personal injury Do not let the air conditioner run for a long time when the humidity is very high and a door or a win dow is left open Moisture may condense and wet or damage furnishings Take care to ensure that power cords could not be pulle...

Страница 5: ...s or combustibles near the air conditioner There is risk of fire or failure of product Do not use the product in a tight ly closed space for a long time Oxygen deficiency could occur Wax Thinner When flammable gas leaks turn off the gas and open a window for ventilation before turn the product on DO NOT use the tele phone or turn switches on or off There is risk of explosion or fire Unplug the uni...

Страница 6: ...iance before per forming cleaning or mainte nance There is risk of electrical shock When the product is not be used for a long time disconnect the power supply plug or turn off the breaker There is risk of product damage or failure or unintended operation Take care to ensure that nobody could step on or fall onto the outdoor unit This could result in personal injury and product damage Always check...

Страница 7: ...flow at room occupants Don t sit in the draft This could damage your health Do not use the product for spe cial purposes such as preserv ing foods works of art etc It is a consumer air conditioner not a precision refrigeration system There is risk of damage or loss of property Do not block the inlet or outlet of air flow It may cause product failure Use a soft cloth to clean Do not use harsh deter...

Страница 8: ...uld cause serious health issues Use a firm stool or ladder when cleaning or main taining the air conditioner Be careful and avoid personal injury Replace the all batteries in the remote control with new ones of the same type Do not mix old and new batteries or different types of batteries There is risk of fire or explosion Do not recharge or disassemble the batteries Do not dispose of batteries in...

Страница 9: ...of electric shock This symbol alerts you to hazards that could cause harm to the air conditioner This symbol indicates special notes NOTICE Symbols Used in this Manual Pipe Hole Fix Hole Hanger Hole H W D W mm inch 600 23 6 H mm inch 600 23 6 D mm inch 146 5 7 Model Dimension INDOOR UNIT ...

Страница 10: ...mensions Outdoor Unit W L2 L3 L1 D H L4 L5 Gas side 3 way valve Liquid side 2 way valve MODEL 9k 12k Models DIM unit W mm 770 30 3 H mm 540 21 3 D mm 245 9 6 L1 mm 285 11 2 L2 mm 64 2 5 L3 mm 518 20 4 L4 mm 10 0 4 L5 mm 100 3 9 ...

Страница 11: ...15 60 1 115 60 90 7 95 7 90 7 95 7 9 3 330 9 3 330 9 3 330 9 3 330 25 883 25 883 25 883 25 883 1 4 1 4 1 4 1 4 41 35 29 41 35 29 41 35 29 41 35 29 48 48 48 48 R410A 900 31 8 R410A 900 31 8 R410A 900 31 8 R410A 900 31 8 Rotary Rotary Rotary Rotary GK113CAA GK113CAA GK113CAA GK113CAA PSC PSC PSC PSC FVC68D PVE FVC68D PVE FVC68D PVE FVC68D PVE 330 330 330 330 MRA12053 12027 MRA12053 12027 MRA12053 12...

Страница 12: ...follow step by step Type A screw and plastic anchor Type B screw Remote control holder Installation guide map Figure Figure Name Screw driver Electric drill Measuring tape Knife Hole core drill Spanner Torque wrench Ohmmeter Hexagonal wrench Ammeter Leak detector Thermometer Horizontal meter Flaring tool set Name ...

Страница 13: ...r water into the heat exchanger Apply after carrying out a drainage test Saddle More than 19 6 50cm Gas side piping Optional part Liquid side piping Optional part Additional drain pipe Vinyl tape Narrow Connecting cable Optional part Bend the pipe as close as possible on the wall but be careful so that it may not break More than 11 8 30cm More than 11 8 30cm More than 11 8 30cm More than 11 8 30cm...

Страница 14: ...ure 3 Composition R 410A R32 R125 50 50wt NOTE Never mix with other refrigerants 4 High pressure 1 6 times higher than R 22 High Pressure refrigerant may cause personal injury Do not handle the pipe by yourself customer High pressure refrigerant may cause personal injury manifold gauge charging and any piping tools must be dedicated to R 410A systems NOTICE Confirm The Refrigerant Boiling Pt C Vap...

Страница 15: ...n 28 70cm of space 3 Do not place animals and plants in the path of the warm air 4 Take the weight of the air conditioner into account and select a place where noise and vibration are min imum 5 Select a place where the warm air and noise from the air conditioner do not disturb neighbors Select the best Location More than 7 9 20cm More than 19 6 50cm More than 4 9ft 1 5m More than 19 6 50cm CAUTIO...

Страница 16: ...n 16 4ft 5m CAUTION Capacity is based on standard length and maximum allowance length is on the basis of reliability Oil trap should be installed every 16 4 23feets 5 7 meters Installation Pipe Size Capacity Btu h Suction Evap Max length A m ft Additional Refrigerant g m oz ft Max Elevation B m ft Standard Length m ft 9k 12k Ø12 7mm 1 2 Ø6 35mm 1 4 7 5 25 7 5 25 15 49 20 0 22 ...

Страница 17: ...ll up the side cover of desired connecting direction then cover side is separated 3 Pick the pipe hole of the side cover CAUTION After removing the pipe hole cut the burr for safety When making pipe path through rear wall you don t need to pick the pipe hole NOTICE Drain hose junction 1 Remove the rubber stopple in the desired drain direc tion 2 Insert drain hose into the handle of drain pan and j...

Страница 18: ...c anchors into drilled points 7 Hang the hole of product at the upper screws and remove the map Falling attention 9 Check the fixed product with light power 1 Attach an Installation guide map on the desired surface 2 Look at suited horizon by horizontal meter on the horizontal setting line and fix lightly the map by adhesive tape 4 Drill the pierted part as a diameter of 50mm for connecting piping...

Страница 19: ...he cut cross section of pipe tube 2 Put the end of the copper tube pipe in a downward direction as you remove burrs in order to avoid dropping burrs into the tubing Putting nut on Remove flare nuts attached to indoor and outdoor unit then put them on pipe tube having completed burr removal not possible to put them on after flaring work Flaring work 1 Firmly hold copper pipe in a die in the dimensi...

Страница 20: ...ion will not dam age furniture or floors Foamed polyethylene or equivalent is recommended 1 Route the indoor tubing and the drain hose in the direction of rear left or right 2 Tape the tubing drain hose and the connecting cable Be sure that the drain hose is located at the lowest side of the bundle Locating at the upper side can cause drain pan to overflow inside the unit Inclined Inside is shiny ...

Страница 21: ... which accommodates the rear piping housing section with vinyl tape 3 Bundle the piping and drain hose together by wrap ping them with vinyl tape over the range within which they fit into the rear piping housing section Flaring work and connection of piping mm inch kgf cm Ø6 35 1 4 180 250 Ø9 52 3 8 340 420 Ø12 7 1 2 550 660 Outside diameter Torque Wrap with vinyl tape Drain hose Pipe Vinyl tape w...

Страница 22: ...f piping CAUTION Installation Information For right piping Follow the instruction below Good case Press on the upper side of clamp and unfold the tubing to downward slowly Bad case Following bending type from left to right may cause damage to the turbing ...

Страница 23: ... hand Finally tighten the flare nut with torque wrench until the wrench clicks When tightening the flare nut with torque wrench ensure the direction for tightening follows the arrow on the wrench mm inch kgf cm Ø6 35 1 4 180 250 Ø9 52 3 8 340 420 Ø12 7 1 2 550 660 Ø15 88 5 8 630 820 Ø19 05 3 4 980 1210 Outside diameter Torque Outdoor unit Liquid side piping Smaller diameter Gas side piping Bigger ...

Страница 24: ... you are using WARNING Be sure to comply with local codes while running the wire from the indoor unit to the outdoor unit size of wire and wiring method etc Every wire must be connected firmly No wire should be allowed to touch refrigerant tubing the compressor or any moving parts Power Supply NOTICE 1 Indoor Unit Outdoor Unit 2 3 4 1 2 3 4 5 6 G To branch circuit Ground Power supply a L1 L2 Conne...

Страница 25: ... the terminal plate How to connect wiring to the terminals For solid core wiring or F cable 1 Cut the wire end with a wire cutter of wire cutting pli ers then strip the insulation to expose the solid wire about 25mm 15 16 2 Using a screwdriver remove the terminal screw s on the terminal plate 3 Using pliers bend the solid wire to from a loop suit able for the terminal screw 4 Shape the loop wire p...

Страница 26: ...cause burn out of the wires 3 Specification of power source 4 Confirm that electrical capacity is sufficient 5 Confirm that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate 6 Confirm that the cable thickness is as specified in the power source specification Particularly note the relation between cable length and thickness 7 Always install an ...

Страница 27: ... Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit Drain piping 1 The drain hose should point downward for easy drain flow 2 Do not make drain piping like the following Downward slope Do not raise Accumulated drain water Tip of drain hose dipped in water Air Waving Water leakage Water leakage Ditch Less than 50mm gap Water leakage mm2 ...

Страница 28: ...e the piping drain hose and connecting cable from down to up 2 Secure the tapped piping along the exterior wall using saddle or equivalent In cases where the outdoor unit is installed above the Indoor unit perform the following 1 Tape the piping and connecting cable from down to up 2 Secure the taped piping along the exterior wall Form a trap to prevent water entering the room 3 Fix the piping ont...

Страница 29: ...auges and dry nitrogen gas cylinder to this service port with charge hoses CAUTION Be sure to use a manifold valve for air purging If it is not available use a stop valve for this purpose The Hi knob of the manifold valve must always be kept close Pressurize the system to no more than 150 P S I G with dry nitrogen gas and close the cylinder valve when the gauge reading reached 150 P S I G Next tes...

Страница 30: ... Lo knob of the manifold valve and stop the vacuum pump Finishing the job 1 With a service valve wrench turn the valve stem of liquid side valve counter clockwise to fully open the valve 2 Turn the valve stem of gas side valve counter clockwise to fully open the valve 3 Loosen the charge hose connected to the gas side ser vice port slightly to release the pressure then remove the hose 4 Replace th...

Страница 31: ...d or removed based on 20g 0 22oz of R 410A per meter foot Example A 30ft line set is used 5 additional ft X 0 22 ounce per foot add 1 1 ounces of R 410A Important If you are ever uncertain of the unit charge reclaim evacuate and weigh in the correct charge using the unit nameplate charge adjusting for line sets longer or shorter than 7 5m 25ft Confirm the refrigerant R 410A Use manifold gauge and ...

Страница 32: ...the power cord in the bottom groove of cover side left 2 Assemble connecting lead wire with controller fix the upper part of panel front and match the lower part of panel front 3 Screw up panel front and suspend the hook of panel front in the groove Panel Front Connector Panel Front Assembly ...

Страница 33: ... unit 1 Anchor the outdoor unit with a bolt and nut ø0 39 ø10mm tightly and horizontally on a con crete or rigid mount 2 When installing on the wall roof or rooftop anchor the mounting base securely with a nail or wire assuming the influence of wind and earthquake 3 If the vibration of the unit is transmitted to the hose secure the unit with an anti vibration rubber Evaluation of the performance O...

Страница 34: ...gerant CAUTION Be sure to perform Pump Down procedure in the cooling mode Pump Down Procedure 1 Connect a low pressure gauge manifold hose to the charge port on the gas side service valve 2 Open the gas side service valve halfway and purge the air in the manifold hose using the refrigerant 3 Close the liquid side service valve all the way 4 Turn on the unit s operating switch and start the cooling...

Страница 35: ...e off a protective tape attached at the mat 6 Place the picture photograph between the exited picture and mat Recommended size of a photo picture 450mm x 450mm 7 Cover mat and press down with hand s until contacting closely 8 Slide the photo graph drawing requested under both hanger parts as following and fix them Press the front panel lightly to close 9 Push both links of lower part of panel insi...

Страница 36: ...he Setting Temp Indoor fan is delayed for 5 seconds at the starting Restarting is inhibited for approx 3 minutes High Med Low and Auto Intermittent operation of fan at low speed Both the indoor and outdoor fan stops during defrosting Hot start will be operated after defrosting ends The indoor fan stops until the indoor pipe temperature will be reached at 82 F 28 C The fan is switched to low Coolin...

Страница 37: ... below CLOSED OPEN Cooling Mode 8 CLOSED OPEN Heating Mode 8 1 Time delay Safety Control 3min The compressor operation is delayed for 3 minutes to balance the pressure of cycle Protection of compressor 5sec The indoor fan is delayed for 5 seconds when operating initially to prevent noises occurred by the vertical louver and wind 2min The reversing valve is delayed for 2 minutes to prevent the refr...

Страница 38: ...NTAKE AIR TEMP SETTING TEMP 1 F Compressor OFF SETTING TEMP 1 F Compressor ON COMPRESSOR ON OFF ON OFF INDOOR FAN SPEED The electronic control operation Intake air Temperature Setting Temperature Over 78 F 77 F Over 76 F below 78 F Intake air 1 C Over 72 F below 76 F Intake air 0 5 C Over 68 F below 72 F Intake air temperature below 64 F 64 F Over 64 F below 86 F Electronic control below 64 F 64 F...

Страница 39: ...wn automatically If you want to stop auto swing press chaos swing button again 5 Healthy Dehumidification When the dehumidification operation input by the remote control is received the intake air temperature is detected and the setting temp is automatically set according to the intake air temperature 79 F Intake Air Temp 77 F 75 F Intake Intake Air Temp 79 F Intake Air Temp 2 F 64 F Intake Intake...

Страница 40: ...the indoor pipe temperature is higher than 95 F indoor fan operates at low speed When the indoor pipe temperature becomes lower than 95 F indoor fan stops B point When the indoor pipe temperature is higher than 100 F 38 C fan operates at selected fan speed INDOOR FAN SPEED Low OFF Low Low OFF OFF OFF LOW ON Selecting fan speed INDOOR PIPE TEMP 82 F 78 F 1min INDOOR FAN SPEED COMPRESSOR Hot Start C...

Страница 41: ... 5 6 7 hours Heating Mode with the Sleep Mode only Heating Model The operation will be stopped after 1 2 3 4 5 6 7 hours INTAKE AIR TEMP SETTING TEMP 1 F Compressor ON SETTING TEMP 1 F Compressor OFF 30 minutes 30 minutes More than 3 minutes 2 F 2 F More than 3 minutes COMPRESSOR ON OFF ON OFF ON INDOOR FAN SPEED Low Low Low Low Low SETTING TEMP 6 F Compressor OFF SETTING TEMP Compressor ON COMPRE...

Страница 42: ...uickly Test operation During the TEST OPERATION the unit operates in cooling mode at high speed fan regardless of room tempera ture and resets in 18 minutes During test operation if remote controller signal is received the unit operates as remote controller sets If you want to use this operation Press and hold the ON OFF button for 3 5 seconds then the buzzer sound 1 beep If you want to stop the o...

Страница 43: ...s On Off Lights up during the system operation 3sec 3sec 3sec once 3sec 3sec twice 3sec 5times Error Code 1 2 5 Error LED Indoor body operation LED Error contents Indoor room temperature thermistor open short Indoor pipe temperature thermistor open short Outdoor pipe temperature thermistor open short Poor communication Indoor TH assy check Outdoor TH assy check Communication line circuit check SVC...

Страница 44: ...eed in cooling heatig mode 6 CHAOS SWING BUTTON Used to stop or start louver movement and set the desired up down airflow direction 7 ON OFF TIMER BUTTONS Used to set the time of starting and stopping operation 8 TIME SETTING BUTTONS Used to adjust the time 9 TIMER SET CANCEL BUTTON Used to set the timer when the desired time is obtained and to cancel the Timer operation 10 SLEEP MODE AUTO BUTTON ...

Страница 45: ... lower parts of panel front After pull down this panel a bit separate connecting wire with product 2 To remove the Control Box Before removing the control box be sure to disconnect the wires from PWB Pull the cover control out from the control box and disconnect other wires Remove securing screws Pull the control box out from the chassis carefully Panel Front Connector Communication Connector Moto...

Страница 46: ...y 4 Before removing the Turbo Fan Remove the securing screws from the chassis Pull the pipe top cover and the air guide 5 To remove the Motor Remove the securing bolt from the motor shaft Pull the fan out from the motor shaft Remove 4 screws securing motor mount from the chassis and lift up the motor mount and the bracket Top Cover Air Guide Motor Mount Bolt Turbo Fan Bracket ...

Страница 47: ...Service Manual 47 Schematic Diagram Schematic Diagram Heat Pump Cooling Only Series Indoor Unit ...

Страница 48: ...48 Room Air Conditioner Schematic Diagram Heat Pump Series Cooling Only Series Outdoor Unit ...

Страница 49: ...Service Manual 49 Schematic Diagram INDOOR UNIT P W B ASSEMBLY P No 6871A20999A PCB ASSEMBLY MAIN Top View Bottom View ...

Страница 50: ...50 Room Air Conditioner Schematic Diagram P No 6871A20901C PCB ASSEMBLY MAIN OUTDOOR UNIT P W B ASSEMBLY Top View Bottom View ...

Страница 51: ...Service Manual 51 Schematic Diagram DISPLAY P W B ASM P No 6871A20921A PCB ASSEMBLY ...

Страница 52: ...52 Room Air Conditioner Schematic Diagram Wiring Diagram 1 Indoor Unit Cooling Only Models Heating Models ...

Страница 53: ...Service Manual 53 Schematic Diagram 2 Outdoor Unit Cooling Only Models Heating Models ...

Страница 54: ...OR UNIT INDOOR UNIT OUTDOOR UNIT HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE EVAPORATOR HEAT EXCHANGE CONDENSER HEAT EXCHANGE CONDENSER COMPRESSOR COMPRESSOR GAS SIDE GAS SIDE LIQUID SIDE LIQUID SIDE CAPILLARY TUBE CAPILLARY TUBE CHECK VALVE COOLING HEATING REVERSING VALVE 1 Cooling Only Models 2 Cooling Heating Models ...

Страница 55: ...th is more than 16 4ft 5m CAUTION Capacity is based on standard length and maximum allowance length is on the basis of reliability Oil trap should be installed every 16 4 23feets 5 7 meters Pipe Size Capacity Btu h Suction Evap Max length A m ft Additional Refrigerant g m oz ft Max Elevation B m ft Standard Length m ft 9k 12k Ø12 7mm 1 2 Ø6 35mm 1 4 7 5 25 7 5 25 15 49 20 0 22 ...

Страница 56: ...rging 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 1kg cm2 g 7 Immediately set the Gas side valve to the closed position Do this quickly so that the gauge ends up indi cating 3 to 5kg cm2 g 8 Disconnect ...

Страница 57: ...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 dis charge the refrigerant until the gauge indicates 3 to 5 kg cm2 g 6 Disconnect the charge set and the gas cylin der and set the Liquid side and Gas side valves to the open position Be sure to use a hexagonal wrench to ...

Страница 58: ... the charge set and discharge the refrigerant until the gauge indi cates 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 refrig erant until the gauge indicates 0 5 to 1 kg cm2 G if this is the case it will not be neces sary to apply a evacuatin Discharge the refrigerant gradually if it is dis charge...

Страница 59: ...rd 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 Vacuum pump 3 Way valve Outdoor unit Liq...

Страница 60: ...ime while operating the air conditioner in the cooling cycle however one time is not suffi cient 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 dis charged If the system has been charged with liquid refrigerant while operating the air conditioner turn o...

Страница 61: ...sing graph Find outdoor temperature Find indoor temperature onto the curve of outdoor temperature Read suction pressure at the axis of ordinates The method of using equation Calculate suction pressure after putting indoor and outdoor temperature into the equation 13 At operating the Unit for 10 minutes Suction Pressure Kg cm 2 g Outdoor Temp C Indoor Temp C 12 11 10 9 8 7 6 5 5 10 15 20 25 30 35 4...

Страница 62: ... air depends on room air humidity When the room air humidity is relativery higher temperature difference is smaller When the room air humidity is relatively lower temperature difference is larger 2 Check temperature and pressure of refrigeration cycle 1 The suction pressure is usually 4 5 6 0 kg cm2 G Cooling at normal condition 2 The temperature can be measured by attaching the thermometer to the...

Страница 63: ...AN Connector contacting of Outdoor Fan Compressor Display PWB Ass y Check Connector related to CN DC DC Check each load Indoor Outdoor Fan Motor Compressor Stepping Motor and contacting condition of related connector including connecting cable of Indoor Outdoor Unit PCB Board Operation Check Items Power Transformer Outdoor unit Input Voltage Output Voltage IC01D 7812 Output Indoor Outdoor unit IC0...

Страница 64: ...r When the compressor stopped Indoor Fan is driven by a low speed At this point the wind speed is not controlled by the remote controller When operated in the Sleeping Mode the wind speed is set to the low speed by force Check DISP PWB Ass y Voltage between CN DISP DC 5V When the detect switch double key inside the remote controller door is fault it is impossible to operate temperature regulating ...

Страница 65: ...d circuit of R02H 12 1K R04H 6 2K Micom No 27 Indoor unit Check the indoor temperature sensor is disconnected or not About 10kΩ at 77 F When the temperature around Outdoor PWB Ass y is above 163 F the compressor is stop and only Outdoor Fan is operating Turn off Main Power Check the electrical wiring diagram of outdoor side Check the abnormal condition for the component of Compressor Outdoor Fan M...

Страница 66: ...tions of outdoor unit PWB Assy s Check the connecting condi tion and disconnection of connecting wires between Indoor and Outdoor unit Check the pattern and the condition of Indoor unit PWB Ass y Check the interference of Indoor Fan Does the voltage of each terminals of CN MOTOR CONNECTOR in Indoor unit corresponds to values in the Table of page 72 Check the motor of Indoor Fan Indoor Fan may be s...

Страница 67: ...ering condition on PWB of CN UP DOWN Connector Check the operating circuit of the Vertical Louver Confirm that there is DC 12V between pin RED of CN UP DOWN and GND Confirm that there is a soldering short at following terminals Between 77 78 79 and 80 of MICOM Between 4 5 6 and 7 of IC02M Between 10 11 12 and 13 of IC01M Between 1 2 3 4 and 5 of CN UP DOWN If there are no problems after above chec...

Страница 68: ...erating with the remote controller then taking above 2 minutes Apply the power again after about 20 seconds by the power of Outdoor unit is off Check for the communication error and the operating condition of product after also operating with the remote controller then taking above 2 minutes Check the PWB assembly of Indoor and Outdoor unit Caution If the connecting wires of Indoor and Outdoor uni...

Страница 69: ...te with a remote controller The operation indicator blinks once on for 0 5 second off for 3 seconds The compressor operates continuously regardless of the setting temperature and the variation of room temperature The operation indicator blinks once on for 0 5 second off for 3 seconds Continuous operation The operation indicator blinks once The compressor and the outdoor fan stop The indoor fan spe...

Страница 70: ...putted The fuse and Q61 in the Outdoor unit are damaged when the indoor fan is operated No power for Indoor unit The signal input of the remote controller and opera tion of product is impossible The RED indicator of the Outdoor unit blinks 5 times after 2 minutes with applying the power All functions stop The operation with the remote controller forced and test one do not operate The only signal o...

Страница 71: ...Terminal Input Power TAB N CN MOTOR CN DC DC RY COMP A 3 4 RY COMP B BL BK BR RD 4 3 2 1 CN DC DC BL BK BR RD S Hi Hi Med Low Off 12k OUTDOO R CN DC DC INDOOR CN DC DC INDOOR CN MOTOR No of pins DC Voltage 10 4 2 4 3 4 3 3 3 2 2 2 2 35 5 11 97 35 5 15 87 35 5 15 87 32 96 11 97 32 96 15 87 32 96 15 87 25 17 11 97 25 17 15 87 25 17 15 87 17 28 11 97 17 28 15 87 17 28 15 87 0 11 97 0 15 87 0 15 87 Tr...

Страница 72: ...145200 146811 2 135500 1 266090 268711 3 249951 159830 330870 267110 349600 346810 359012 352380 147581 146811 1 135080 567480 1 INLET AIR EVA MIDDLE Indoor Unit NOTE Please ensure GCSC since the replacement parts may be changed demending upon the buyer s request Please check the correct parts in View RPL Replacement Part List on GCSC GCSC Website http biz Lgservice com ...

Страница 73: ...52203 1 552203 2 437212 435511 649950 W0CZZ 567480 4 268711 6 552202 552116 566000 567480 6 SUCTION 2 Outdoor Unit NOTE Please ensure GCSC since the replacement parts may be changed demending upon the buyer s request Please check the correct parts in View RPL Replacement Part List on GCSC GCSC Website http biz Lgservice com ...

Страница 74: ...5421A20265A 5421A20265A 5421A20265A 5421A20265A 35211B Tube Assembly Tubing 5211A21789C 5211A21789C 5211A21789C 5211A21789C 159830 Filter Assembly Air Cleaner 5983A25015A 5983A25015A 5983A25015A 5983A25015A 249951 Case Assembly Control Indoor 4995A20653J 4995A20653J 4995A20653K 4995A20653K 268711 3 PCB Assembly Main 6871A20999A 6871A20999A 6871A20999C 6871A20999C DC PCB 266090 HVPS DC DC 6609A1000...

Страница 75: ...or 4H00982E 4H00982E 4H00982E 4H00982E 554160 Compressor Set Korea 2520UGAC2AA 2520UGAC2AA 2520UGAC2AA 2520UGAC2AA 567502 Overload Protect 6750U L029A 6750U L029A 6750U L029A 6750U L029A 552113 Tube Assembly Condenser Out 5211A24118C 5211A24118C 5211A24118C 5211A24118C 552116 Tube Assembly Reverse 5211A26008B 5211A26008B 5211A26008B 5211A26008B 552202 Valve Reverse 5220AR3228D 5220AR3228D 5220AR32...

Страница 76: ...P No 3828A20926C December 2006 Printed in Korea ...

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