Benutzeranleitung / Produktwartung LSN180HE des Produzenten LG Electronics
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LG Room Air Conditioner SERVICE MANUAL LG MODELS: LSN090CE LSU090CE LSN120CE LSU120CE LSN180CE LSU180CE LSN240CE LSU240CE LSN090HE LSU090HE LSN120HE LSU120HE LSN180HE LSU180HE LSN240HE LSU240HE CAUTION website http://www.lgservice.com • BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL.
2 Room Air Conditioner Air Conditioner Ser vice Manual T ABLE OF CONTENTS Safety Precautions .......................................................................................................................................... 3 Dimensions ......
Ser vice Manual 3 Saf ety Precautions Safety Precautions T o pre v ent injur y to the user or other people and proper ty damage, the f ollo wing instructions must be f ollow ed. ■ Incorrect operation due to ignoring instruction will cause har m or damage.
4 Room Air Conditioner Saf ety Precautions ■ Operation Be cautious when unpacking and installing the product. • Shape edges could cause injur y . Be especially careful of the shar p edges. For installation, alwa ys contact the dealer or an A uthorized Service Center .
Ser vice Manual 5 Saf ety Precautions Do not place a heater or other appliances near the power cable. • There is risk of fire, f ailure of the product, and/or electric shock. Do not let the air conditioner run for a long time when the humidi- ty is very high and a door or a window is left open.
6 Room Air Conditioner Saf ety Precautions V entilate the product fr om time to time when operating it togeth- er with a stove, etc. • There is risk of fire or electr ical shock. Unplug the appliance before performing c leaning or mainte- nance. • There is risk of electr ic shock.
Ser vice Manual 7 ■ Operation Saf ety Precautions Use two or more people to lift and transport the air conditioner • A void personal injur y . Do not install the product where it will be exposed to sea wind (salt spray) directl y . • It ma y cause corrosion in the product.
8 Room Air Conditioner Dimensions Do not drink the water drained from the unit. • It is not sanitar y and could cause serious health issues. Use a firm stool or ladder when cleaning or maintaining the air conditioner . • Be careful and av oid personal injur y .
Ser vice Manual 9 Dimensions Dimensions D H W Installation plate W mm(inch) 840(33.1) 894(35.2) 894(35.2) H mm(inch) 270(10.6) 295(11.6) 295(11.6) D mm(inch) 153(6.0) 165(6.5) 165(6.5) Model Dimension 9 Btu Series (C/O) 9 Btu Series (H/P) 12 Btu Series Indoor Unit This symbol aler ts y ou to the risk of electric shock.
10 Room Air Conditioner D H W Installation plate Dimensions W mm(inch) 1090(42.9) 1090(42.9) H mm(inch) 300(11.8) 300(11.8) D mm(inch) 178(7.0) 178(7.0) Model Dimension 18 Btu Series 24 Btu Series.
Ser vice Manual 11 Dimensions Outdoor Unit 1. 9k, 12k W L2 L3 L1 D H L4 L5 Gas side (3-way valve) Liquid side (2-way valve) MODEL 9k, 12k DIM unit W mm(inch) 770(30.3) H mm(inch) 540(21.3) D mm(inch) 245(9.6) L1 mm(inch) 287(11.3) L2 mm(inch) 64(2.5) L3 mm(inch) 518(20.
12 Room Air Conditioner Dimensions 2. 18k, 24k W L6 L5 L7 L8 D L1 L2 L9 L10 L3 L4 H MODEL 18k, 24k DIM W mm(inch) 870(34.3) H mm(inch) 655(25.8) D mm(inch) 320(12.6) L1 mm(inch) 370(14.6) L2 mm(inch) 25(1.0) L3 mm(inch) 630(24.8) L4 mm(inch) 25(1.0) L5 mm(inch) 546(21.
Ser vice Manual 13 Introduction Intr oduction This symbol alerts you to the risk of electric shoc k. This symbol alerts you to hazar ds that may cause harm to the air condi- tioner .
14 Room Air Conditioner Installation Type "A" screw and plastic anchor Type "B" screw Remote Control Holder Installation plate Figure Figure Name Screw driver Electric Drill Measur.
Ser vice Manual 15 Installation Installation Map Installation parts you should purchase. Vertical Air deflector Air Discarge Forced Operation Button Operation Indication Lamps/ Signal Receptor Vinyl tape(Wide) • Apply after carrying out a drainage test.
16 Room Air Conditioner 1. Check the quality label on the indoor and outdoor unit. 2. Make certain that the refr igerant is R-410A. THIS PRODUCT CONT AINS R-410A REFRIGERANT 1) Diff erent compressor oil - R-410A(P olyol ester) / R-22(Mineral). - Do not mix the e xisting mineral oil.
Ser vice Manual 17 Outdoor unit 1. If an a wning is built o v er the unit to pre v ent direct sunlight or rain e xposure, make sure that heat radiation from the condenser is not restricted. 2. Ensure that the space around the bac k and sides is more than 10cm(3.
18 Room Air Conditioner Piping Length And Elev ation • Capacity is based on standard length and maximum allo wance length is on the basis of reliability . • Oil trap should be installed e ver y 5~7meters (16.4~23.0ft). Pipe Size Capacity (Btu/h) Suction Evap Max.
Ser vice Manual 19 The wall y ou select should be strong and solid enough to pre v ent vibration 1. Mount the installation plate on the wall with type "A" screws . If mounting the unit on a concrete wall, use anchor bolts . • Mount the installation plate horizontally b y aligning the centerline using a lev el.
20 Room Air Conditioner Flaring W ork Cut the pipes and the cable. 1. Use the piping kit accessor y or the pipes purchased locally . 2. Measure the distance between the indoor and the out- door unit. 3. Cut the pipes a little longer than measured distance.
Ser vice Manual 21 Indoor 1. Prepare the indoor unit's piping and drain hose f or installation through the wall. 2. Remo ve the plastic tubing retainer(see the illus- tration b y) and pull the tubing and drain hose aw a y from chassis. 3. Replace only the plastic tubing holder 1, not the holder 2 in the original position.
22 Room Air Conditioner Wrap the insulation material around the connecting portion. • Ov erlap the connection pipe insulation mater ial and the indoor unit pipe insulation material. Bind them together with vinyl tape so that there is no gap . Route the indoor tubing and the drain hose to the required piping hole position.
Ser vice Manual 23 Insert the connecting cable into the indoor unit. • Don't connect the cable to the indoor unit. • Make a small loop with the cab le for easy con- nection later . T ape the drain hose and the connecting cable. • Connecting cable Connecting the pipings to the indoor unit and the drain hose to drain pipe.
24 Room Air Conditioner Reroute the pipings and the drain hose across the bac k of the chassis. Reroute the pipings and the drain hose across the bac k of the chassis.
Ser vice Manual 25 Installation Inf or mation. F or left piping. F ollow the instr uction belo w . Correct case • Press on the upper side of clamp and unf old the tubing to downw ard slowly . Incorrect case • F ollowing bending type from right to left ma y cause damage to the tubing.
26 Room Air Conditioner Put a couple drops of refrigerant oil on the face of the flare before assemb ling taking care not to add an y contaminants. Align the center of the pipings and suffi- ciently tighten the flare n ut by hand. • The drain hose can be connected at tw o diff erent positions.
Ser vice Manual 27 Connection Of The Cable 1 Indoor Unit Outdoor Unit 2 3 4 1 2 3 4 5 6 G To branch circuit Ground P ower supply a L1 * L2 Connecting cable(Low v oltage) b T er minal (4P) T er minal (6P) Outdoor unit Wiring Diagram T erminal bloc k Over 5mm (0.
28 Room Air Conditioner After the confir mation of the abov e conditions, prepare the wiring as follo ws: 1) Never fail to ha ve an individual po wer cir cuit specifically for the air conditioner . As for the method of wiring, be guided by the cir cuit diagram posted on the inside of control co ver .
Ser vice Manual 29 Chec king The Drainage • P our a glass of water on the drain pan. • Ensure the water flo ws through the drain hose of the indoor unit without an y leakage and goes out the drain e xit. Drain piping • The drain hose should point do wnward f or easy drain flow .
30 Room Air Conditioner Forming The Piping Form the piping by wrapping the connect- ing portion of the indoor unit with insula- tion material and secure it with two kinds of vinyl tapes. • If you w ant to connect an additional drain hose , the end of the drain outlet should be routed abov e the ground.
Ser vice Manual 31 Air Purging Air purging With V acuum Pump Lo Hi Indoor unit Outdoor unit Manifold valve Charge hose Nitrogen gas cylinder(in vertical standing position) Pressure gauge Air and moisture remaining in the refrigerant system hav e undesirable eff ects as indicated below .
32 Room Air Conditioner Ev acuation • Connect the charge hose end described in the preceding steps to the v acuum pump to e vacuate the tubing and indoor unit. Confir m the "Lo" knob of the manif old v alv e is open. Then, run the vacuum pump .
Ser vice Manual 33 Charging ■ Each outdoor unit is f actor y charged (nameplate charge) f or the e v aporator as well as a 7.5m(25ft) line set. Any time a line set is used either shor ter or longer then the nominal 7.5m(25ft) line set length the refrigerant charge has to be adjusted.
34 Room Air Conditioner Outside ambient TEMP. The pressure of the gas side service valve 95 ° F(35 ° C) 8.5~9.5kg/cm 2 G(120~135 P.S.I.G.) Settlement of outdoor unit ■ Anchor the outdoor unit with a bolt and nut( ø 10mm(0.39in) tightly and horizontally on a concrete or rigid mount.
Ser vice Manual 35 Operation Function of Contr ols Operation • DISPLA Y 1) C/O Model Operation Indicator • ON while in appliance operation, OFF while in appliance pause . • Flashing while in disconnection or shor t in Ther mistor . (3 sec off / 0.
36 Room Air Conditioner Operation • While in compressor off , the indoor fan repeats low airflo w speed and pause. • While the intak e air temp is between compressor on temp . and compressor off temp., 10-min dehu- midification operation and 4-min compressor off repeat.
Ser vice Manual 37 Operation ■ Airflow Speed Selection • The airflo w speed of the indoor f an is set to high, medium, low , or chaos (auto) by the input of the airflow speed selection k e y on the remote control.
38 Room Air Conditioner Operation ■ Forced operation • Operation procedures when the remote control can't be used. • The operation will be star ted if the pow er button is pressed.
Ser vice Manual 39 Self-diagnosis Function Operation Displa y Function 1. Heating Model 2. Cooling Model • Cooling, Soft Dry, Fan, Heating • Cooling, Soft Dry, Fan • Hot-start, Deice Operation I.
40 Room Air Conditioner Remote Contr ol Operations Operation The controls will look like the f ollowing. 1. ST ART/ST OP BUTT ON Operation star ts when this button is pressed and stops when the button is pressed again. 2. OPERA TION MODE SELECTION BUTT ON Used to select the operation mode .
Ser vice Manual 41 Disassembly Disassembl y Indoor Unit Disconnect the unit from power supply before mak- ing any checks. Be sure the power switch is set to “ OFF ” . To remove the Grille from the Chassis. • Set the up-and-down air discharge louver to open position (horizontally) by finger pressure.
42 Room Air Conditioner Disassembly 2. T o remove the Contr ol Bo x. • Remove securing screws. • Pull the control box out from the chassis carefully. 3. T o remove the Dischar ge Grille . • Unhook the discharge grille and pull the discharge grille out from the chassis carefully.
Ser vice Manual 43 Disassembly • Unhook the tab on the right inside of the chassis at the same time, slightly pull the evaporator toward you until the tab is clear of the slot. 5. T o remove the Motor Co ver • Remove 2 securing screw. • Pull the motor cover out from the chassis carefully.
44 Room Air Conditioner T r oub leshooting Guide T roubleshooting Guide INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT HEAT EXCHANGE (EVAPORATOR) HEAT EXCHANGE (EVAPORATOR) HEAT EXCHANGE (CONDENSER.
Ser vice Manual 45 T roubleshooting Guide 2-wa y , 3-way V alve 2-way Valve (Liquid Side) 3-way Valve (Gas Side) Shaft position Shaft position Service port Closed Closed Closed (with valve cap) (with .
46 Room Air Conditioner T roubleshooting Guide • Procedure (1) Confirm that both the 2-way and 3-way valves are set to the open position. – Remove the v alve stem caps and confirm that the v alve stems are in the r aised posi- tion. – Be sure to use a he xagonal wrench to operate the v alv e stems.
Ser vice Manual 47 T roubleshooting Guide Balance Refrigerant of the 3-way V alve (Gas leakage) • Procedure (1) Confirm that both the 2-way and 3-way valves are set to the bac k seat. (2) Connect the charge set to the 3-way valve ’ s por t. – Leav e the valv e on the charge set closed.
48 Room Air Conditioner T roubleshooting Guide Ev acuation (All amount of refrigerant leaked) • Procedure (1) Connect the vacuum pump to the center hose of char ge set center hose (2) Evacuation for appr oximatel y one hour . – Confir m that the gauge needle has mov ed tow ard -76 cmHg (v acuum of 4 mmHg or less).
Ser vice Manual 49 T roubleshooting Guide Gas Charging (After Evacuation) • Procedure (1) Connect the charge hose to the charging cylinder . – Connect the charge hose which you dis- connected from the v acuum pump to the v alve at the bottom of the cylinder .
50 Room Air Conditioner T roubleshooting Guide Additional gas c harging (Gas leakage) • When refrigerant is insufficient b y leakage, recharge the unit with the refrigerant up to normal oper- ating suction pressure. • Use the gr aph or the equation below to get oper ating suction pressure according to indoor and out- door temperature .
Ser vice Manual 51 T roubleshooting Guide T roub le analysis 1. Check temperature diff erence between intake and discharge air and operating current. Temp. Difference Temp. difference : approx. ° F(0 ° C) Current : less than 80% of rated current Temp.
52 Room Air Conditioner T roubleshooting Guide Electr onic P ar ts (9k model) Pr oduct does not operate at all. (* Refer to Electr onic Contr ol Device dra wing and Schematic diagram.) Turn off Main Power Turn on Main Power Does "beeping" sound is made from the Indoor Unit? Primarily, the operating condition of Micom is OK.
Ser vice Manual 53 T roubleshooting Guide Electr onic P ar ts (18k model) Pr oduct does not operate at all. (* Refer to Electr onic Contr ol Device dra wing and Schematic diagram.) Turn off Main Power Turn on Main Power Does "beeping" sound is made from the Indoor Unit? Primarily, the operating condition of Micom is OK.
54 Room Air Conditioner T roubleshooting Guide The pr oduct is not operate with the remote controller . Turn on Main Power While the compressor has been stopped, the compressor does not operate owing to the delaying function for 3 minutes after stopped.
Ser vice Manual 55 T roubleshooting Guide Compressor/Outdoor F an are unable to drive.(9k Model) Turn on Main Power Operate "Cooling Mode( )" by setting the desired temperature of the remote controller is less than one of the indoor temperature by 2 ° F at least.
56 Room Air Conditioner T roubleshooting Guide Compressor/Outdoor F an are unable to drive.(18k Model) Turn on Main Power Operate "Cooling Mode( )" by setting the desired temperature of the remote controller is less than one of the indoor temperature by 2 ° F at least.
Ser vice Manual 57 T roubleshooting Guide When indoor F an does not operate . Check connecting condition of the CN-MOTOR CON- NECTOR Does the voltage of terminal of CN-DC/DC CONNECTOR in Indoor unit c.
58 Room Air Conditioner T roubleshooting Guide When V er tical Louver does not operate. • Confirm that the Vertical Louver is normally geared with the shaft of Stepping Motor.
Ser vice Manual 59 T roubleshooting Guide • The operation indicator of Indoor unit blinks five times. • The red indicator of Outdoor unit blinks five times. Check the connecting wires between Indoor and Outdoor unit for the connecting error and the contacting condition.
60 Room Air Conditioner T roubleshooting Guide The phenomena in case of connecting err or INDOOR UNIT Connector Type Condition Open and connecting error Open Open Open Open Short between terminals ( and ) of ROOM-TH. Short between terminals ( and ) of PIPE-TH.
Ser vice Manual 61 OUTDOOR UNIT Connector Type Condition OPEN • PWB pattern is damaged when applying the power. Connecting reversely Connecting reversely OPEN OPEN OPEN OPEN Connecting error ( ) Connecting error ( ) Connecting error ( ) Connecting error ( ) Connecting error ( ) Connecting error ( ) • All functions stop.
62 Room Air Conditioner Schematic Diagram Schematic Dia gram Electric Contr ol Device ■ Indoor.
Ser vice Manual 63 Schematic Diagram ■ Outdoor (9k, 12k).
64 Room Air Conditioner ■ Outdoor (18k, 24k).
Ser vice Manual 65 Wiring Diagram ■ Indoor Unit Models: 9k, 12k, 18k, 24k.
66 Room Air Conditioner ■ Outdoor Unit Models: 9k(C/O) Models: 12k(H/P), 12k(C/O , H/P) Schematic Diagram.
Ser vice Manual 67 Models: 18k(C/O) Models: 18k(H/P), 24k(C/O , H/P) Schematic Diagram.
68 Room Air Conditioner Schematic Diagram Components Location ■ Indoor MAIN P .W .B ASSEMBL Y • T OP VIEW • BO TT OM VIEW.
Ser vice Manual 69 ■ Outdoor(9k, 12k) • T OP VIEW • BO TT OM VIEW Schematic Diagram.
70 Room Air Conditioner Schematic Diagram ■ Outdoor(18k, 24k) • T OP VIEW • BO TT OM VIEW.
Ser vice Manual 71 DISPLA Y ASSEMBL Y LED_M PCB P/No : 6870A90240F PCB ASSEMBLY P/No : 6871A20681 PLASMA 88 SW_TACT CN-DISP1 RECEIVER C01A – 6871A20681 – 6871A20680 Schematic Diagram.
72 Room Air Conditioner Product Specifications Pr oduct Specifications Power Supply Ø, V, Hz Cooling Capacity BTU/h Input W Running Current A COMP. Locked Rotor AMP.
Ser vice Manual 73 Product Specifications Cooling & Heating Items Unit LS090HE LS120HE LS180HE LS240HE Power Supply ø , V, Hz Cooling Capacity BTU/h Heating Capacity BTU/h Input Cooling W Heating W Running Current Cooling A Heating A COMP. Locked Cooling A Rotor AMP.
74 Room Air Conditioner Exploded Vie w 152302 152312 342800 263230 359011 131410 733010 135312 135311 159901 268712 146811 346810 135516 35211B 354210 249951 268714 268713 267110 Indoor Unit Exploded .
Ser vice Manual 75 Exploded View Outdoor Unit: 9k, 12k Btu/h Seriess 550140 554160 567502 553000 55211G 552102 437210 435301 447910 559010 546810 549610 554031 430410 552203-2 552203-1 437212 435511 6.
76 Room Air Conditioner Outdoor Unit: 18k(C/O) Seriess Exploded View 435512 437210 559010 546810 55211G 554031 552112 437212 435511 447910 552116 566000 430410 435301 649950 263230-2 668711 W0CZZ-2 W0.
Ser vice Manual 77 Outdoor Unit: 18k(H/P), 24k Seriess Exploded View 447910 552202 561410 567502-1 552116 566000 649950 435512 554031 552112 137213-1 263230-1 137213-2 435300 559010 435301 430410 5468.
78 Room Air Conditioner Replacement P ar ts List Replacement P ar ts List P arts List (Indoor) NO TE) * Please ensure GCSC since these par ts may be changed depending upon the b uyer's request.
Ser vice Manual 79 Replacement P ar ts List P arts List (Indoor) NO TE) * Please ensure GCSC since these par ts may be changed depending upon the b uyer's request.
80 Room Air Conditioner Replacement P ar ts List P arts List (Outdoor) NO TE) * Please ensure GCSC since these par ts may be changed depending upon the b uyer's request.
Ser vice Manual 81 Replacement P ar ts List P arts List (Outdoor) LOCATION DESCRIPTION PART No. REMARKS No. 263230-1 THERMISTOR ASSEMBLY 6323A20002L R 263230-2 THERMISTOR ASSEMBLY 6323A20016A R 430410.
82 Room Air Conditioner Replacement P ar ts List P arts List (Outdoor) NO TE) * Please ensure GCSC since these par ts may be changed depending upon the b uyer's request.
P/No.: 3828A20462V Printed in Korea.
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