LG Electronics LW1800PR manual

LG Room Air Conditioner SERVICE MANUAL LG MODELS: LW1800PR LW1800ER LW1800ERZ3 LW1500PR LW1500PRY3 LWP1830WAL LWP1820PDL LWP1820PEL LWC182PLMM0 LWC183PLMD1 LWC212PLMM0 LW1804ER LW1800PRZ3 HBLG1803R CAUTION website http://www.lgservice.com • BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. • ONLY FOR AUTHORIZED SERVICE PERS[...]

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 ollowing instructions must be f ollowed. ■ Incorrect operation due to ignoring instruction will cause har m or damage. The seriousness is classified by the f ollowing indications . ■ Meanings of symbols used in [...]

4 Room Air Conditioner Saf ety Precautions Do not modify or extend the po wer cord. • There is risk or fire or electr ic shoc k. Do not install, remove, or re-install the unit b y y ourself(customer). • There is risk of fire, electric shock, e xplosion, or injur y . Be cautious when unpacking and installing the product. • Sharp edges could ca[...]

Ser vice Manual 5 Dimensions Dimensions D W H ' F TIMER POWER MODE TEMP FAN SPEED F1 LOW F2 MED F3 HIGH Dry Timer Fan Energy Saver Cool W mm(inch) 660(25 31 / 32 ) H mm(inch) 428(16 27 / 32 ) D mm(inch) 680(26 27 / 32 ) Model Dimension ALL MODELS Outside Dimensions This symbol alerts you to the risk of electric shoc k. This symbol alerts you t[...]

6 Room Air Conditioner Specfications Pr oduct Specifications POWER SUPPLY CAPACITY (BTU/h) INPUT (W) COOLING RUNNING CURRENT (A) E.E.R (BTU/W.h) CAPACITY (BTU/h) INPUT (W) HEATING RUNNING CURRENT (A) E.E.R (BTU/W.h) OPERATING INDOOR ( ° C) CONDITION OUTDOOR ( ° C) REFRIGERANT (R-22) CHARGE EVAPORATOR CONDENSER FAN, INDOOR FAN, OUTDOOR FAN SPEEDS,[...]

Ser vice Manual 7 Installation Installation Select the Best Location Installation Chec k How to Secure the Drain Pipe 1. To avoid vibration and noise, make sure the unit is installed securely and firmly. 2. Install the unit where the sunlight does not shine directly on the unit. If the unit receives direct sunlight, build an awning to shade the cab[...]

8 Room Air Conditioner Installation How to Install When Using Installation Kits 1. Window Requirements This unit is designed for installation in standard double hung windows with actual opening widths from 29" to 41". The top and bottom window sash must open suffi- ciently to allow a clear vertical opening of 16" from the bottom of t[...]

Ser vice Manual 9 Suggested tool Requirements Preparation of Chassis 1. Remove the screws which fasten the cabinet at both sides and at the back. Keep these two screws which fasten the cabinet at both sides for later use. 2. Slide the unit out from the cabinet by gripping the base pan handle and pulling forward while bracing the cabinet. 3. Cut the[...]

10 Room Air Conditioner Installation Cabinet Installation 1. Open the window. Mark a line on the center of the window stool between the side window stop moldings. Loosely attach the sill bracket to the support bracket using the carriage bolt and the lock nut. 2. Attach the sill bracket to the window sill using the screws (Type B). Carefully place t[...]

Ser vice Manual 11 Installation 5. Pull each Frame curtain fully to each window sash track, and pull the bottom window sash down behind the Top retainer bar until it meets. 6. Attach each Frame curtain the window sash by using screws (Type C). (See Fig. 10) 7. Slide the unit into the cabinet. (See Fig. 11) 8. Cut the Foam-strip to the proper length[...]

12 Room Air Conditioner Operation • Designed for COOLING ONLY. • Powerful and quiet cooling. • Slide-in and slide-out chassis for the simple instal- lation and service. • Low air-intake, top cooled-air discharge. • Built-in adjustable Thermistor • Washable one-touch filter • Compact size • Equipped with reliable and efficient rotary[...]

Ser vice Manual 13 Operation FAN SPEED SELECTOR Every time you push this button, it is set as follows. (Hi ➔ Low ➔ Med ➔ Hi ➔ Low ➔ ...) ON/OFF TIMER BUTTON You can set the time when the unit will turn on or turn off automatically by pressing the timer button. If the unit is operating, this button controls the time it will be turned off. [...]

14 Room Air Conditioner REMO TE CONTROL DISPLA Y TIMER MODE TEMP PO WER FA N SPEED ° F 1 2 3 4 5 F1 LOW F2 MED F3 HIGH COOL DRY ENERGY SA VER FA N TIMER 6 Pow er T emp Fan Speed Timer Mode 1 2 3 4 5 Pow er T emp Fan Speed Timer Mode Auto Swing 1 2 3 7 4 5 1 4 2 5 3 7 6 ˚F TEMP F1 LOW F2 MED F3 HIGH Dry Timer Fan Energy Saver Cool 2 6 1 3 4 5 LW18[...]

Ser vice Manual 15 POWER BUTTON Operation starts, when this button is pressed and stops when you press the button again. ROOM TEMPERATURE SETTING BUTTON Control the room temperature within a range of 16 ° C to 30 ° C. The room temperature will be adjusted by 1 ˚ C 30min., and by 2 ˚ C 1 hour later. OPERATION MODE SELECTION BUTTON Select Cooling[...]

16 Room Air Conditioner Disassembly Disassembl y Mechanical P arts — Before the following disassembly, CONTROL BOX set to OFF and disconnect the power cord. 1. Front Grille 1. Open the lnlet grille downward and remove the air filter. 2. Remove the screw that fastens the front grille.(See Figure 15) 3. Pull the front grille from the right side. 4.[...]

Ser vice Manual 17 Disassembly Figure 18 Figure 19 Figure 20 Figure 21 4. Air Guide and T urbo Fan 1. Remove the front grille. (Refer to section 1) 2. Remove the cabinet. (Refer to section 2) 3. Remove the control box. (Refer to section 3) 4. Remove the 4 screws that fasten the brace. 5. Remove the brace. 6. Remove the 2 screws that fasten the air [...]

18 Room Air Conditioner 6. Shroud 1. Remove the fan. (Refer to section 5) 2. Remove the shroud. (See Figure 22) 3. Re-install the components by referring to the removal procedure, above. 7. Overload Protector 1. Remove the cabinet. (Refer to section 2) 2. Remove the nut that fastens the terminal cover. 3. Remove the terminal cover. (See Figure 23) [...]

Ser vice Manual 19 Disassembly 9. Capacitor 1. Remove the control box. (Refer to section 3) 2. Open the top cover from the control box. (See Figure 25) 3. Pull out the capacitor from the control box. 4. Disconnect all the leads of capacitor terminals. 5. Re-install the components by referring to the removal procedure, above. 10. P ower Cor d 1. Rem[...]

20 Room Air Conditioner Disassembly 11. Motor 1. Remove the cabinet. (Refer to section 2) 2. Remove the turbo fan. (Refer to section 4) 3. Remove the fan. (Refer to section 5) 4. Remove the 4 screws that fasten the motor from the air guide. (See Figure 27) 5. Remove the motor. 6. Re-install the components by referring to the removal procedure, abov[...]

Ser vice Manual 21 Disassembly — Replacement of the refrigeration cycle. 1. When replacing the refrigeration cycle, be sure to Discharge the refrigerant system using a Freon TM recovery System. If there is no valve to attach the recovery system, install one (such as a WATCO A-1) before venting the Freon TM . Leave the valve in place after servici[...]

22 Room Air Conditioner Disassembly Equipment needed: Vacuum pump, Charging cylinder, Manifold gauge, Brazing equipment. Pin-off tool capable of making a vapor-proof seal, Leak detector, Tubing cutter, Hand Tools to remove components, Service valve. A COMPOUND GAUGE EVAPORATOR (LOW PRESSURE SIDE) COMPRESSOR CAPILLARY TUBE CONDENSER (HIGH PRESSURE S[...]

Ser vice Manual 23 Schematic Dia gram 4WAY MAIN POWER CAPACITOR MOTOR FAN 35V 2 4 D02D~D05D 1N4004 SVC271D-14A CN-PWR FUSE 125V/T2A ZNR01J 0.1/275V C01J CN-MOTOR 120 1/2W R01J + + POWER TRANS 1 7 220 C05D 10V C06D 25V 0.01 D05D D02D D03D + C01D 1000 D04D C03D 1000 16V 25V C04D 0.01 7805 IC02D O 5V I O 12V 50V C02D 0.1 S/V- CN-4WAY 3 3 1 1 IC01M ULN[...]

24 Room Air Conditioner Schematic Diagram 33 22 11 HVB 5V b c R04P X O O X 5V R04P 8 EEPROM Model 1 EEPROM A0 5V S7136 IC01A 3.6V 2 1 R01A 20K 3 + 10V 1uF C02A CAT93C46 Vcc Auto Restart Non Auto Restart 20K R03P 20K 5 7 6 R02P Q03G 1K R04P A101S Q01G A101S Q02G SW03G D03G SW06G D06G TEMP UP D02G D05G SW02G MODE SW05G TEMP DOWN ON/OFF D01G D04G FAN [...]

Ser vice Manual 25 Schematic Diagram ■ MODEL : LWP1820PDL/LWP1820PEL ■ MODEL : LW1800ERZ3/LW1800PR, HBLG1803R LW1800ER/LWP1830WAL ■ MODEL : LWC182PLMM0/LWC212PLMM0 ■ MODEL : LW1500PRY3/LW1500PR LW1800PRZ3/LW1804ER LWC182PLMD1 MOTOR ASSY CAPACITOR COMPRESSOR OVERLOAD PROTECTOR DC PCB ASSEMBLY AC PCB ASSEMBLY THERMISTOR PLASMA FILTER ASSY 1 2[...]

Schematic Diagram 26 Room Air Conditioner Components Location ■ MODEL: L W1800PR/L W1800ER L W1500PR/L WP1830W AL L WP1820PDL/L WP1820PEL L W1800ERZ3/L W1804ER L WC183PLMD1 ■ MODEL: L WC182PLMM0/L WC212PLMM0 L W1500PR Y3/L W1800PRZ3 HBLG1803R ■ MODEL: L W1800PR/L W1500PR L WP1830W AL ■ MODEL: L WC182PLMM0/L WC212PLMM0 L W1800ERZ3/HBLG1803R [...]

Ser vice Manual 27 Schematic Diagram ■ MODEL: L W1800ER/L WP1820PDL/L WP1820PEL ■ MODEL: L W1804ER/L W1500PR Y3/L W1800PRZ3/L WC183PLMD1[...]

28 Room Air Conditioner T roubleshooting Guide T r oubleshooting Guide Piping System Figure 31 is a brief description of the important components and their function in what is called the refrigeration system. This will help you to understand the refrigeration cycle and the flow of the refrigerant in the cooling cycle. MOTOR COMPRESSOR OIL (LIQUID R[...]

Ser vice Manual 29 T roubleshooting Guide T r oubleshooting Guide In general, possible trouble is classified in two kinds. The one is called Starting Failure which is caused from an electrical defect, and the other is ineffective Air Conditioning caused by a defect in the refrigeration circuit and improper application. Unit runs but poor cooling. I[...]

30 Room Air Conditioner T roubleshooting Guide Fails to Start Check circuit breaker and fuse. Gas leakage of feeler bulb of thermostat Check of control switch. Fan only fails to start. Improper wiring. Defect of fan motor capacitor . Irregular motor resistance ( ). Irregular motor insulation ( ). Replacement of fan motor . Regular but fails to star[...]

Ser vice Manual 31 T roubleshooting Guide • Check the Fuse. • Check the wiring diagram. Is the Trans input power AC 115V? (208/230V for LWL1230WAL) Is the Trans output power about AC 14V? Is shorted the Trans. output? Is output Voltage of IC01D DC 12V? Is output Voltage of IC02D DC 5V? Is the voltage No.18 of Micom DC 5V? Replace AC PCB Ass&apo[...]

32 Room Air Conditioner T roubleshooting Guide Possible Trouble 2 The compressor does not operate. Possible Trouble 3 The compressor always operate. Is setting Temp. set lower than Room Temp.-0.5 ° C? Is the voltage No.10 of IC01M 0V? • Replace IC01M. • Select the setting Temp. to lower Number. • Wait 3 Minutes. Does the Unit delay for 3 min[...]

Ser vice Manual 33 T roubleshooting Guide Possible Trouble 4 FAN does not operate. Possible Trouble 5 The function of Energy Saver does not operate. • Replace IC01M. • Replace IC01M. Is the voltage NO.1 or 2 or 4 of IC01M DC 12V? Is the voltage NO.16 or 15 or 13 of IC01M 0V? • Check the RY-Hi or RY-Med or RY-Lo. • Check the wiring diagram. [...]

34 Room Air Conditioner T roubleshooting Guide Possible Trouble 6 Remote controller does not operate. Possible Trouble 7 It displays abnormally on DC PCB Ass ’ y. NO NO NO NO YES YES YES Is the IC01G good? Is the connection of CN-AC/DC OK? • Replace the DC PCB Ass'y. • Replace IC01G. • Replace IC03G (Q01G, Q02G, Q03G for Delux Model). [...]

Ser vice Manual 35 T roubleshooting Guide • Check the Fuse. • Check the wiring diagram. Is the Trans input power AC 115V? (208/230V for LWL1230WAL) Is the Trans output power about AC 14V? Is the Trans. output shorted? Is output Voltage of IC01D DC 12V? Is output Voltage of IC02D DC 5V? Is the voltage No.40 of Micom DC 5V? Replace AC PCB Ass&apo[...]

36 Room Air Conditioner T roubleshooting Guide Possible Trouble 2 The compressor does not operate. Possible Trouble 3 The compressor always operate. Is desired Temp. set lower than Room Temp.-0.5 ° C? Is the voltage No.10 of IC01M 0V? • Replace IC01M. • Select the desired Temp. to lower Number. • Wait 3 Minutes. Is the Unit for 3 minutes del[...]

Ser vice Manual 37 T roubleshooting Guide Possible Trouble 4 FAN does not operate. Possible Trouble 5 Remote controller does not operate. • Replace IC01M. • Replace IC01M. Is the voltage NO.1 or 2 or 4 of IC01M DC 5V? Is the voltage NO.16 or 15 or 13 of IC01M 0V? • Check the RY-Hi or RY-Med or RY-Lo. • Check the wiring diagram. NO NO YES YE[...]

38 Room Air Conditioner T roubleshooting Guide Possible Trouble 6 It displays abnormally on DC PCB Ass ’ y. NO NO NO NO YES YES YES Are the IC01G and IC02G good? Is the connection of CN-AC/DC OK? • Replace the DC PCB Ass'y. • Replace IC01G, IC02G. • Replace IC03G. • Connect connector to CN-AC/DC exactly. Does IC03G operate normally o[...]

Ser vice Manual 39 T roubleshooting Guide COMPLAINT CAUSE REMEDY Check voltage at outlet. Correct if none. Check voltage to Control Box. If none, check power supply cord. Replace cord if circuit is open. Connect wire. Refer to wiring diagram for terminal identification. Repair or replace loose terminal. Test capacitor. Replace if not within ±10% o[...]

40 Room Air Conditioner T roubleshooting Guide COMPLAINT CAUSE REMEDY Check the TEMP control. If not at the lowest number, set TEMP control to this setting and restart the unit. Check the continuity of the thermistor. Replace the thermistor if the circuit is open. Check the capacitor. Replace if not within ±10% of manufacturers rating. Replace if [...]

Ser vice Manual 41 Exploded View Exploded Vie w D E F R O S T H E A T C O O L I N D O O R D E S I R E D E N E R G Y S A V E R A I R P U R Y F I E R A U T O R E S T A R T F A N FAN D R Y 130910 149980 346811 359012 W48602 349480 349001 268714 268712 238310 W0CZZ 135500 249950 147581 147582-1 559010 352111 352113 W52106-1 263230 237200 W48602 148000 [...]

Exploded View 42 Room Air Conditioner ■ HEA TING MODEL D E F R O S T HEAT COOL I N D O O R D E S I R E D E N E R G Y S A V E R A I R P U R Y F I E R A U T O R E S T A R T FAN F A N DRY 130910 149980 346811 359012 W48602 349480 349001 268714 268712 238310 W0CZZ 135500 249950 147581 147582-1 559010 552111 352115-1 263230 237200 W48602 148000 349600[...]

Ser vice Manual 43 Replacement P ar ts List Replacement P ar ts List DESCRIPTION 130410 BASE ASSEMBLY,WELD[SINGLE] 3041A20023D 130910 CABINET ASSEMBLY,SINGLE 3091AR6057E 135303 GRILLE,INLET 3530A10080A 135312 GRILLE ASSEMBLY,FRONT(SINGLE) 3531A20095A 147581 LOUVER,HORIZONTAL 4758A30022A 147582-1 LOUVER,VERTICAL 4758A20042A 147582-2 LOUVER,VERTICAL [...]

44 Room Air Conditioner Replacement P ar ts List 130410 BASE ASSEMBLY, WELD[SINGLE] 3041A20023B 3041A20023B 3041A20023Z R 130910 CABINET ASSEMBLY, SINGLE 3091AR6057H 3091AR6057H 3091AR6057H R 135303 GRILLE, INLET 3530A10080A 3530A10080A 3530A10080A R 135312 GRILLE ASSEMBLY, FRONT(SINGLE) 3531A20095A 3531A20095D 3531A20095D R 135500 COVER 3550A30122[...]

Ser vice Manual 45 Replacement P ar ts List DESCRIPTION 130410 BASE ASSEMBLY, WELD[SINGLE] 3041A20023B 3041A20023C R 130910 CABINET ASSEMBLY, SINGLE 3091AR6057E 3091AR6057E R 135303 GRILLE, INLET 3530A10080A 3530A10080A R 135312 GRILLE ASSEMBLY, FRONT(SINGLE) 3531A20095A 3531A20095A R 135500 COVER, CONTROL BOX 3550A30122A 3550A30122A R 146812 MOTOR[...]

46 Room Air Conditioner DESCRIPTION 130410 BASE PAN WELD ASS'Y 3041A20023B R 130910 CABINET ASS'Y 3091AR6057E 3091AR6057H R 135312 FRONT GRILL ASS'Y 3531A20095A 3531A20095B R 135303 INLET GRILLE 3530A10080A R 135500 COVER, CONTROL BOX 3550A30122A R 147581 HORIZONTAL LOUVER 4758A30022A R 147582-1 VERTICAL LOUVER 4758A30023A R 147582-2[...]

Ser vice Manual 47 DESCRIPTION 130410 BASE ASSEMBLY, WELD[SINGLE] 3041A20023B R 130910 CABINET ASSEMBLY, SINGLE 3091AR6057H R 135303 GRILLE, INLET 3530A10080A R 135312 GRILLE ASSEMBLY, FRONT(SINGLE) 3531A20095A R 135500 COVER, CONTROL BOX 3550A30122A R 147581 LOUVER, HORIZONTAL 4758A30022A R 147582-1 LOUVER, VERTICAL 4758A30023A R 147582-2 LOUVER, [...]

48 Room Air Conditioner DESCRIPTION 130410 BASE ASSEMBLY,WELD[SINGLE] 3041A20023D 3041A20023D 130910 CABINET ASSEMBLY,SINGLE 3091AR6057E 3091AR6057E 135303 GRILLE,INLET 3530A10080A 3530A10080A 135312 GRILLE ASSEMBLY,FRONT(SINGLE) 3531A20095A 3531A20095A 135500 COVER 3550A20089A 3550A30122A 146812 MOTOR ASSEMBLY,SYNC. - - 147581 LOUVER,HORIZONTAL 47[...]

Ser vice Manual 49 DESCRIPTION 130410 BASE ASSEMBLY,WELD[SINGLE] 3041A20023D 130910 CABINET ASSEMBLY,SINGLE 3091AR6057E 135303 GRILLE,INLET 3530A10146A 135312 GRILLE ASSEMBLY,FRONT(SINGLE) 3531A10201A 135500 COVER 3550A30122A 147581 LOUVER,HORIZONTAL 4758A30022A 147582-1 LOUVER,VERTICAL 4758A20042A 147582-2 LOUVER,VERTICAL 4758A20042B 148000 BRACE [...]

P/No.: 3828A20140E Printed in Korea[...]