LG Electronics LSC183VMA manual

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Table of contents for the manual

  • Page 1

    SERVICE MANUAL Room Air Conditioner MODEL : LSC183VMA[...]

  • Page 2

    Contents Details of 2003 LG Model Name ............................................................................................ 3 Functions ............................................................................................................................... . 4 Product Ref erences ......................................................[...]

  • Page 3

    Details of 2003 LG Model Name -3- 12 Code T ype Code of Model Meaning 1 Producing Center/ A~Z L: ChangW on R22, A: ChangWon R410A, C: ChangW on R407C Refrigerant 2 T ype of Air conditioner A~Z S: Split T ype Air conditioner 3 Cooling/Heating A~Z C: C/O , H: H/P , X: C/O + E/H, Z: H/P + E/H 4,5 Capacity(Btu/h) 1~9 Cooling/Heating Capacity Ex. "[...]

  • Page 4

    -4- Functions • Room temperature sensor . (THERMIST OR) • Maintains the room temperature in accordance with the Setting T emp . • Indoor f an is dela yed f or 5 sec at the star ting. • Restar ting is inhibited for appro x. 3 minutes. • High, Med, Low , CHA OS • Inter mittent operation of f an at low speed. • The f an is switched to lo[...]

  • Page 5

    -5- Healthy Dehumidification Operation Mode. ( ) Remote Control Operation ON/OFF Reset Operation Mode Selection Temperature Setting Timer Selection Timer Setting JET COOL Timer Cancel Sleep Operation Airflow Direction Control (Cooling model only) (Heating model only) TEMPERATURE LOW HIGH Cooling Operation Mode.( ) Heating Operation Mode.( ) Auto Op[...]

  • Page 6

    -6- Pr oduct References NO TE: Please refer to Label Quality on the product since this specification ma y be changed for improving perf or mance Items Unit LSC183VMA P ower Supply ø , V , Hz 1, 208/230, 60 Cooling Capacity BTU/h 18,000/18,000 Input W 1,900/1,900 Running Current A 9.0/9.0 COMP . Loc ked Rotor AMP . A 47 E.E.R BTU/hW 9.5/9.5 Air Cir[...]

  • Page 7

    -7- 522 928 147 Pipe Hole Fix Hole MODEL DIM Unit W mm(inch) 928(36.5) H mm(inch) 522(20.6) D mm(inch) 147(5.8) Indoor Unit Dimensions (1) Indoor Unit[...]

  • Page 8

    -8- W L6 L5 L7 L8 D L1 L2 L9 L10 L3 L4 H Gas side 3-way valve Liquid side 3-way valve (2) Outdoor Unit (18K) MODEL OUTDOOR UNIT 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(21.5) L6 mm(inch) 162(6.4) L7 mm(inch) 162(6.4) L8 mm(i[...]

  • Page 9

    Refrigeration Cycle Dia gram -9- F or installation ov er rated, *a proper quantity of refr igerant should be added f or each meter . Ex) 18K: When installed at a distance of 30m, 450g of refrigerant should be added. (30-7.5) x 20g = 450g INDOOR UNIT HEA T EXCHANGER (EV APORA TOR) HEA T EXCHANGER (CONDENSER) COMPRESSOR GAS SIDE CAPILLAR Y TUBE LIQUI[...]

  • Page 10

    Wiring Diagram -10- (1) Indoor Unit (2) Outdoor Unit ( 18K) 18K (Cooling Only Models)[...]

  • Page 11

    Operation Details 1. MAIN UNIT FUNCTION • 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 / 0.5 sec on) Sleep Timer Indicator • ON while in sleep timer mode, OFF when sleep timer cancel or appliance oper ation [...]

  • Page 12

    • While in compressor off , the indoor fan repeats low airflo w speed and pause. • While the intake air temp is betw een compressor on temp . and compressor off temp ., 10-min dehumidifica- tion operation and 4-min compressor off repeat. Compressor ON T emp . ➲ Setting T emp+0.5 ° C Compressor OFF T emp . ➲ Setting T emp-0.5 ° C • In 10[...]

  • Page 13

    -13- ■ Fuzzy Operation (C/O Model) • According to the temperature set by Fuzzy rule, when the intak e air temp is 0.5 ° C or more below the setting temp , the compressor is tur ned off . When 0.5 ° C or more abov e the setting temp, the compressor is turned on. Compressor ON T emp ➲ Setting T emp + 0.5 ° C Compressor OFF T emp ➲ Setting [...]

  • Page 14

    -14- 2) Fuzzy Operation for Dehumidification • According to the setting temperature selected by Fuzzy rule, when the intak e air temp is 0.5 ° C or more below the setting temp , the compressor is tur ned off . When 0.5 ° C or more abov e the setting temp, the compressor is tur ned on. Compressor ON T emp ➲ Setting T emp + 0.5 ° C Compressor [...]

  • Page 15

    -15- ■ Off-Timer Operation • When the set time is reached after the time is input by the remote control, the appliance stops oper ating. • The timer LED is on when the off-timer is input. It is off when the time set by the timer is reached. • If the appliance is on pause at the time set by the timer , the pause continues. ■ Off-Timer ↔ [...]

  • Page 16

    -16- ■ Jet Cool Mode Operation (H/P Model) • While in heating mode or Fuzzy operation, the Jet Cool k ey cannot be input. When it is input while in the other mode operation (cooling, dehumidification, v entilation), the Jet Cool mode is operated. • In the Jet Cool mode, the indoor f an is operated at super-high speed for 60 min at cooling mod[...]

  • Page 17

    -17- Displa y Function Self-diagnosis Function 3sec 3sec 3sec (once) Error Code 1 Error Displa y LED (Indoor body operation LED) Error contents • Indoor room temperature thermistor open/shor t • Indoor pipe temperature thermistor open/shor t. • Indoor Thermistor assembly chec k SVC check point 1. Heating Model 2. Cooling Model • Cooling, So[...]

  • Page 18

    Installation 1. Installation of indoor , Outdoor unit -18- Read completely , then follo w step b y step . 1) Select the best location 1. Indoor unit ■ Do not hav e any heat or steam near the unit. ■ Select a place where there are no obstacles in front of the unit. ■ Make sure that condensation dr ainage can be con- veniently routed a wa y . ?[...]

  • Page 19

    -19- 1. Open panel front ■ First,Pull the grille bottom, then remov e screws(2 pieces), and close grille bottom again. ■ The moment of lifting the both low er par ts of panel front, you can hear sound this panel came out, In this time panel front is separated ■ After pull down this panel a bit, and separate con- necting wire with product. Pip[...]

  • Page 20

    -20- 4) How to fix installation plate The wall y ou select should be strong and solid enough to pre vent vibr ation 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 by aligning the centerline using a lev el. 5) Preparin[...]

  • Page 21

    -21- 2. Flaring W ork and Connection of Piping 1) Flaring work Main cause f or refrigerant leakage is due to defect in the flaring work. Carr y out correct flar ing work using the f ollowing procedure . 1. Cut the pipes and the cable. • Use the piping kit accessor y or pipes purchased locally . • Measure the distance between the indoor and the [...]

  • Page 22

    -22- 2. T ape the tubing, drain hose, and the connecting cable. Be sure that the drain hose is located at the lowest side of the b undle. Locating at the upper side can cause drain pan to overflo w inside the unit. NO TE: If the drain hose is routed inside the room, insulate the hose with an insulation material* so that dripping from "sweating[...]

  • Page 23

    -23- 3) Connection of the pipes-Outdoor 1 . Align the center of the pipings and sufficientl y tighten the flare nut b y hand. 2 . Finally , tighten the flare nut with torque wrenc h until the wrench c licks. • When tightening the flare nut with torque wrench, ensure the direction f or tightening follo ws the arrow on the wrench. Installation Info[...]

  • Page 24

    -24- 3. Connecting The Cable Between Indoor Unit and Outdoor Unit 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 erminal (4P) T erminal (6P) Outdoor unit Wiring Diagram T er minal bloc k Over 5mm (2") Cov er control Conduit panel Connecting cable P ower supply [...]

  • Page 25

    -25- G T er minal bloc k Cap (Remov e) Clamp cord Lock nut Conduit panel Loop Round terminal Screw with special washer Screw with special washer Round terminal T er minal plate Wire Wire Round terminal Insulation Strip 25mm(15/16") Strip 10mm(3/8") Solid wire Cap(Reuse) T aping (f or sealing) Low v oltage line (connecting cable) P ower su[...]

  • Page 26

    -26- 4. chec king the Drainage and forming the pipings 2) Form the piping 1. Form the piping by wrapping the connecting por- tion of the indoor unit with insulation material and secure it with two kinds of vin yl tapes. ■ If you w ant to connect an additional drain hose , the end of the drain outlet should be routed abov e the ground. Secure the [...]

  • Page 27

    -27- CAUTION CAUTION Air Conditioner Circuit Breaker Use a circuit breaker or time dela y fuse. Main pow er source If a pow er plug is not to be used, provide a circuit break er between pow er source and the unit as shown belo w . 3) Connect the cable to the indoor unit 1. Connect the wires to the terminals on the control board individually accordi[...]

  • Page 28

    -28- T o av oid nitrogen enter ing the refrigerant system in a liquid state, the top of the cylinder must be higher than its bottom when you pressurize the system. Usually , the cylinder is used in a v er tical standing position. 1) Air purging Air and moisture remaining in the refrigerant system hav e undesirable eff ects as indicated below . • [...]

  • Page 29

    -29- 3. Evacuation • Connect the charge hose end described in the pre- ceding steps to the vacuum pump to e vacuate the tub- ing and indoor unit. Confirm the "Lo" knob of the manifold v alve is open. Then, run the vacuum pump . The operation time f or ev acuation varies with tubing length and capacity of the pump . The f ollowing tab le[...]

  • Page 30

    -30- 1. First, Chec k the side cover assembl y exactly , Fix power cor d in the bottom groove of co ver side left. 2. Assemble connecting lead wire with contr oller and first fix the upper part of panel front, then match the lower part of panel front 3. Drive three screws. P anel F ront Connector 6. P anel Front Assemb ly[...]

  • Page 31

    -31- 1. Chec k that all tubing and wiring have been properly connected. 2. Chec k that the gas and liquid side ser vice valv es are fully open. 1. Prepare remote contr ol 1. Remov e the batter y cover by pulling it according to the arrow direction. 2. Inser t new batteries making sure that the (+) and ( – ) of batter y are installed correctly . 3[...]

  • Page 32

    -32- Operation Name and Function-Remote Contr ol The remote control transmits the signals to the system. ST ART/ST OP BUTT ON Operation star ts when this button is pressed and stops when the button is pressed again. OPERA TION MODE SELECTION BUTT ON Used to select the operation mode. ROOM TEMPERA TURE SETTING BUTT ONS Used to select the room temper[...]

  • Page 33

    -33- Disassembl y of the par ts (Indoor unit) W arning : Disconnect the unit from power supply bef ore making any chec ks. Be sure the power s witch is set to “ OFF ” . 1. T o remove the Grille fr om the Chassis. - Push mark[ ] on the grille bottom then pull it down and remov e 3 secur ing screws . - Lift the both lower parts of panel front. - [...]

  • Page 34

    -34- 3. T o remove the Ev aporator . - Remo ve 1 scre ws secur ing the ev aporator . - Pull the e vapor ator out from the chassis carefully . 4. Before remo ving the T urbo Fan. - Remo ve the securing screws from the chassis . - Pull the pipe cov er , top cov er and the air guide. 5. T o remove the Motor . - Remo ve the securing bolt from the motor[...]

  • Page 35

    2-wa y , 3-way V alve 2-way V alve (Liquid Side) 3-way V alve (Gas Side) Shaft position Shaft position Service por t Closed Closed Closed (with valv e cap) (with valv e cap) (with cap) Open Closed Open (counter-clockwise) (clockwise) (push-pin or with vacumm pump) Open Open Closed (with valv e cap) (with valv e cap) (with cap) Closed Open Open (clo[...]

  • Page 36

    1. Air purging Required tools : h e xagonal wrench, adjustable wrench, torque wrenches, wrench to hold the joints, and gas leak detector . The additional gas f or air purging has been charged in the outdoor unit. Howe ver , if the flare connections hav e not be done correctly and there gas leaks, a gas cylinder and the charge set will be needed. Th[...]

  • Page 37

    2. Pumping down • Procedure (1) Confirm that both the 2-way and 3-wa y valves are set to the open position. – Remov e the valv e stem caps and confir m that the valv e stems are in the raised position. – Be sure to use a he xagonal wrench to operate the valv e stems. (2) Operate the unit for 10 to 15 min utes. (3 ) Stop operation and wait for[...]

  • Page 38

    1) Re-air purging (Re-installation) • Procedure (1) Confirm that both the 2-wa y valve and the 3- way v alve are set to the closed position. (2) Connect the charge set and a gas c ylinder to the service por t of the 3-way v alve . – Leav e the valv e on the gas cylinder closed. (3) Air purging. – Open the valv es on the gas cylinder and the c[...]

  • Page 39

    2) Balance refrigerant of the 2-way , 3-way v alves (Gas leakage) • Procedure (1) Confirm that both the 2-way and 3-wa y valves are set to the back seat. (2) Connect the charge set to the 3-wa y valve’ s port. – Leav e the valv e on the charge set closed. – Connect the charge hose with the push pin to the ser vice por t. (3) Open the valve [...]

  • Page 40

    3. Ev acuation (All amount of refrigerant leaked) • Procedure (1) Connect the vacuum pump to the c harge set’ s center hose (2) Evacuation f or appro ximately one hour . – Confir m that the gauge needle has mov ed tow ard -76 cmHg (vacuum of 4 mmHg or less). (3 ) Close the valve (Lo side) on the charge set, turn off the vacuum pump, and confi[...]

  • Page 41

    4. Gas Charging (After Evacuation) • Procedure ( 1 ) Connect the charge hose to the charging cylinder . – Connect the charge hose which you dis- connected from the vacuum pump to the v alve at the bottom of the cylinder . – If you are using a gas cylinder , also use a scale and re vers the cylinder so that the system can be charged with liqui[...]

  • Page 42

    1. T rouble anal ysis 1. Check temper ature diff erence betw een intake and discharge air and operating current. T emp . Difference Operating Current T emp . difference :appro x. 0 ° F Current : less than 80% of rated current T emp . difference :appro x. 8 ° C(14 ° F) Current : less than 80% of rated current T emp . difference :less than 8 ° C([...]

  • Page 43

    - 43 - - 43 - 2. Pr oduct does not operate at all. (* Refer to Electr onic Control De vice drawing and Schematic diagram.) T urn off Main P ower T urn on Main P ower Does "beeping" sound is made from the Indoor Unit? Primar ily , the operating condition of Micom is OK. Check the v oltage of po wer(About A C 208V/A C230V , 60Hz) • Main p[...]

  • Page 44

    - 44 - 3. The pr oduct is not operate with the remote controller . T urn on Main P ower While the compressor has been stopped, the compressor does not operate owing to the dela ying function for 3 min utes after stopped. Caused by other parts except the remote controller Cause by the remote controller When the mark( ) is displa yed in LCD screen, r[...]

  • Page 45

    - 45 - 4. Compressor/Outdoor F an are unable to drive. T urn on Main P ower Operate "Cooling Mode( )" b y setting the desired temperature of the remote controller is less than one of the indoor temperature b y 2 ° F at least. When in F an Mode, Compressor/Outdoor F an is stopped. Check the sensor f or indoor temperature is attached as cl[...]

  • Page 46

    - 46 - 5. When Indoor F an does not operate . Check connecting condition of the CN-MO T OR CONNECT OR Does the v oltage of terminal of CN-DC/DC CONNECT OR in Indoor unit corresponds to the v alues in the tab le of page 51? Do the voltage of terminal of CN-DC/DC CONNECT OR in Outdoor unit corresponds to the values in the tab le of page 51? Check the[...]

  • Page 47

    - 47 - • Confir m that the V er tical Louver is normally geared with the shaft of Stepping Motor . • If the regular torque is detected when rotating the V er tical Louver with hands Nor mal • Check the connecting condition of CN-U/D , CN-L/R Connector • Check the soldering condition(on PWB) of CN-U/D , CN-L/R Connector Check the oper ating [...]

  • Page 48

    - 48 - • The operation indicator of Indoor unit b links five times . • The red indicator of Outdoor unit blinks fiv e times. Check the connecting wires betw een Indoor and Outdoor unit for the connecting error and the contacting condition. Check the installation condition of outdoor unit. Check f or the communication error and the operating con[...]

  • Page 49

    - 49 - 8. The phenomena in case of connecting error INDOOR UNIT Connector T ype Condition Open and connecting error Open Open Open Open Shor t between ter minals ( and ) of ROOM-TH. Shor t between ter minals ( and ) of PIPE-TH. Shor t between ter minals • The same as the phenomenon of Outdoor Unit. • The up/down v ane does not operate. • The [...]

  • Page 50

    - 50 - OUTDOOR UNIT Connector T ype Condition OPEN • PWB pattern is damaged when applying the power . Connecting re versely Connecting re versely OPEN OPEN OPEN OPEN Connecting error ( ) Connecting error ( ) Connecting error ( ) Connecting error ( ) Connecting error ( ) Connecting error ( ) • All functions stop . • The operation with the remo[...]

  • Page 51

    9. V oltage of Connectors accor ding to Indoor Fan Speed - 51 - 4 3 2 1 1 1 4 3 1 2 3 4 2 3 4 5 6 2 INDOOR FAN MOTOR INDOOR PWB ASSY Connecting wires between Indoor and Outdoor Indoor Connecting Terminal Outdoor Connecting Terminal Input Power POWER TRANS CN-POWER CN-TRANS CN-DC/DC RY-COMP BK BL BK BR RD BK BL BL BK BR RD +- 12 32 42 12 32 42 12 32[...]

  • Page 52

    (1) MAIN PWB ASSY(Indoor Unit) • PWB ASSY SVC P ART LIST - 52 - Electr onic Contr ol Device 1 18K Cooling Model 6871A20387C 15K 15K OPEN OPEN OPEN OPEN NO MODEL P/No. OPTIONAL FUNCTION OR1H OR2H OR3H OR4H OR5H OR6H OJ1H, OJ2H, : SHOR T • T OP VIEW • BO TT OM VIEW[...]

  • Page 53

    1 18K Cooling Model 6871A10036P 27K 39K 91K 27K 12K X X X X X X - 53 - (2) MAIN PWB ASSY(Outdoor Unit) • PWB ASSY SVC P ART LIST NO MODEL P/No. OPTIONAL FUNCTION OR4H OR5H OR6H OR7H OR 8H FUSE RY - HEA TER R Y -4W A Y RY - FA N CN- 4W A Y CN- FA N CN-TH 250V 3.15A[...]

  • Page 54

    (3) DISPLA Y PWB ASSEMBL Y • T OP VIEW - 54 - CN-CON(WH) CN-CON(WH) CN-D7 CN-D8 1 CN-D6 1 1 CN-D5 CN-D5 CN-D6 1 1 1 1 CN-D8 1 1 1 1 CN-D7 1 1 CN-D4 1 CN-D3 CN-D1 1 CN-D3 CN-D1 1 CN-D2 CN-D2 1 1 CN-D4 1 CN-12V(WH) CN-SW(BL) CN-12V(WH) CN-SW(BL) 1 1 1 1 C01V PWB ASM:6871A20363 PWB:6870A90126A PWB ASM:6871A20363 PWB:6870A90126A C02V C01V C02V • BO[...]

  • Page 55

    1. Indoor Unit - 55 - Schematic Dia gram OUTDOOR 48 46 47 44 42 43 40 38 39 41 36 35 34 33 37 45 15 1 2 2 1 23 18 16 17 19 20 21 22 28 24 25 26 27 29 30 31. 32 SLEEP TIMER ON/OFF DEFROST LED1 LED3 LED4 LED2 58 7 11 13 14 12 10 9 8 63 3 5 6 4 1 2 64 62 61 60 59 53 57 56 55 54 51 52 50 49 1 CN-HVB(BL) 3 2 HVB ASSY 1 3 2 12V R93 10K RXE250 POLY SW1 CN[...]

  • Page 56

    2. Outdoor Unit - 56 - 3 2 1 IC9 IC10 5 TLP521-1BL TLP521-1BL CN-DC/DC 4 2 3 1 470uF 20V C05 4 2 3 1 8 2 3 220 VR71 R75 23.2K 1% 2K 100uF 25V C73 + 4 R74 5.1K 8 7 29.4K 20K 34K 1.06K 102 1 - + - D92 C92 50V 1N4148 8 104 IC7 5.23K 13K 3K 3 + 14 9 HCP6068 56 R95 D91 1N4148 3 4 2 1 2 1 3 4 2.7K R92 DC 5V DC 5V DC 5V ZD81 5.1V R91 1K 6.8K 1% R82 R81 XX[...]

  • Page 57

    -57- Exploded Vie w and Replacement P ar ts List 1. Indoor Unit 249951 268714-2 147582 135311-1 146811-1 135500-3 146811-1 352380-2 352380-1 131410 147582 135311-2 135500-2 135311-3 147581 354210 352150 35211B 668713 268712 135303-2 135303-1 349490 330870 135500-1 267110 152302 146811-2 346810-1 359012-1 346810-2 359012-2 146811-1 135316 352116 352[...]

  • Page 58

    -58- P ar ts List(indoor) 131410 CHASSIS ASSEMBL Y 3141A20008C R 135303-1 GRILLE,INLET 3530A10116D R 135303-2 GRILLE,INLET 3530A10117D R 135311-1 GRILLE ASSEMBL Y ,DISCHARGE(INDOOR) 3531A20124E R 135311-2 GRILLE ASSEMBL Y ,DISCHARGE(INDOOR) 3531A20124F R 135311-3 GRILLE ASSEMBL Y ,DISCHARGE(INDOOR) 3531A20125D R 135316 GRILLE ASSEMBL Y ,FRONT(INDOO[...]

  • Page 59

    2. Outdoor unit(18K) -59- 552116 649950 561410 554160 567502 447910 550140 552203-2 552203-3 435512 437210 559010 546810 668711 552111 W0CZZ 554031 261704 437212 435511 430411[...]

  • Page 60

    -60- P ar ts List(outdoor) NO TE) * Please ensure GCSC since these par ts may be changed depending upon the b uyer's request. (GCSC WEBSITE http://biz.LGser vice.com) 261704 TRANSFORMER, PO WER 6171A Q3198A 1 430411 BASE ASSY , WELD(OUTDOOR) 3041A30003F 1 R 435511 CO VER ASSY , CONTR OL(OUTDOOR) 3551AR7184T 1 R 435512 CO VER ASSY , T OP(OUTDOO[...]

  • Page 61

    MEMO -61-[...]

  • Page 62

    MEMO -62-[...]

  • Page 63

    P/No.: 3828A20135Q August, 2003 Printed in Korea[...]