LG WG1804R Service Manual
LG WG1804R Manual
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- LG WG1804R | Service Manual - Page 1
Only http://biz.lgservice.com Room Air Conditioner SVC MANUAL(Exploued View) MODEL : M1804RY3 R1804Y3 WG1804R WG2404R M2404ER WG1805R WG1800RY3 WG2405R LWC183MGAB1 LWC183MGMM1 LWC183MSMM2 CAUTION Before Servicing the unit, read the safety precautions in General SVC manual. Only for authorized - LG WG1804R | Service Manual - Page 2
Service Manual TABLE OF CONTENTS Safety Precautions 3 Dimensions 5 Symbols Used in this Manual Refrigerating Cycle 18 Schematic Diagram 21 Electronic Control Device 21 Wiring Diagram 22 Components Lation 23 Troubleshooting Guide 24 Piping System 24 Troubleshooting Guide - LG WG1804R | Service Manual - Page 3
to property only. • Meanings of symbols used in this manual are as shown below. Be sure not to do. Be sure to follow the instruction. • Installation AWARNING Do not use damaged power cord LG Electronics. Inc. All right reserved. 3 Only for training and service purposes LGE Internal Use Only - LG WG1804R | Service Manual - Page 4
conditioner could fall with it, causing property damage, product failure, and personal injury. •-• Copyright ©2008 LG Electronics. Inc. All right reserved. -4 Only for training and service purposes LGE Internal Use Only - LG WG1804R | Service Manual - Page 5
(26 9/13") 24K Btu 660(26") 428(16 27/32") 770(30 5/ 16" ) Copyright ©2008 LG Electronics. Inc. All right reserved. 5 Only for training and service purposes LGE Internal Use Only - LG WG1804R | Service Manual - Page 6
LWC183MGMM1 M1804RY3 R1804Y3 LWC183MGAB1 WG1804R WG2404R M2404ER WG2405R WG1805R 800/1,850 RUNNING CURRENT 9.0/8.3 13.7/12.7 12.2/11.3 8.5/8.5 9.0/8.3 REFRIGERANT (R-22) CHARGE(g) 625g(220oz) 985g(34.7oz) 1,020g( Only for training and service purposes - 6- LGE Internal Use Only - LG WG1804R | Service Manual - Page 7
. e 0 Hang Push Agit Drain cap SCREW Fig. 1 DRAIN HOSE rr Fig. 2 Fig. 3 Fig. 4 Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 7- LGE Internal Use Only - LG WG1804R | Service Manual - Page 8
guide(2) Window locking bracket O Sill bracket(2) • • • Support bracket(2) Drain joint pipe Right frame curtain Type A (14) Type B (7) Type C (5) Type D (2) Carriage Bolt (2) Lock Nut (4) Copyright ©2008 LG Electronics. Inc. All right reserved. -8 Only for training and service - LG WG1804R | Service Manual - Page 9
Foam-PE Top retainer bar 7. Insert the Frame Curtain into the Top retainer bar and Frame guides. Figure 3 Top retainer bar Foam-PE Figure 4 00 8. Fasten the curtains to the . All right reserved. 9 Only for training and service purposes Frame guide Screw(Type A) Figure 5 LGE Internal Use Only - LG WG1804R | Service Manual - Page 10
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 reserved. Only for training and service purposes - 10 - Front Angle Screw(Type B) Figure 10 LGE Internal Use - LG WG1804R | Service Manual - Page 11
to electrical outlet. 5'11 mo 000 000 II Figure 14 Figure 15 II Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes OO0 OO Figure 16 LGE Internal Use Only - LG WG1804R | Service Manual - Page 12
a_ m • Designed for COOLING ONLY. • Powerful and whispering cooling. • Slide-in and slide-out chassis for the simple instal- lation and service. • Side air-intake, side cooled-air discharge. • Built-in adjustable THERMOSTAT • Washable one-touch filter • Compact size • Reliable and efficient rotary - LG WG1804R | Service Manual - Page 13
Saver O 0 IL T e (. Fan Speed 1 Temp 1 AutolSwing Power © WG1804R, WG2404R, WG2405R 0 1 REMOTE CONTROL M1804RY3 M2404ER ,WG1804R WG2404R WG2405R Power T • Temp • 0 O Temp • ;T) n. O Fan All right reserved. Only for training and service purposes - 13 - LGE Internal Use Only - LG WG1804R | Service Manual - Page 14
by referring to the removal procedure, above. (See Figure 19) (Refer to the circuit diagram found on page 23 in this manual and on the control box.) Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 14 - Figure 18 Figure 19 LGE Internal Use Only - LG WG1804R | Service Manual - Page 15
the top side. 3. Move the evaporator sideward carefully. 4. Remove the orifice from the air guide carefully. 5. Remove the clamp which secures the blower with plier. (See Fig. 21) 6. . All right reserved. Only for training and service purposes - 15 - Figure 22 (L*. \ Figure 23 LGE Internal Use Only - LG WG1804R | Service Manual - Page 16
1. Remove the cabinet. (Refer to section 18) 2. Discharge the refrigerant system using FreonTM Recovery System. If there is no valve to attach WATCO A-1) before venting the FreonTM. Leave the valve in place after servicing the system. 3. Disconnect the 3 leads from the compressor. 4. After - LG WG1804R | Service Manual - Page 17
Re-install the components by referring to the above removal procedure above. Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 17 - Disassembly hi'4•Pv 4O IN • Figure 27 O 0 00 Figure 28 i[ • [ol IJ Figure 29 0i I Figure 30 LGE Internal Use - LG WG1804R | Service Manual - Page 18
Disassembly A CAUTION: Discharge the refrigerant system using a FreonTM Recovery System. If there is no valve to attach the recovery system, install one (such as a WATCO A-1) before venting the FreonTM Leave the valve in place after servicing the system. 13. Condenser 1. Remove the cabinet. (Refer - LG WG1804R | Service Manual - Page 19
cycle, be sure to Discharge the refrigerant system using a FreonTM recovery System. If there is no valve to attach the recovery system, install one (such as a WATCO A-1) before venting the FreonTM. Leave the valve in place after servicing the system. 2. After discharging the unit completely - LG WG1804R | Service Manual - Page 20
gauge, Brazing equipment. Pin-off tool capable of making a leak-proof seal, Leak detector, Tubing cutter, Hand Tools to remove components, Service valve. CONDENSER (HIGH PRESSURE SIDE) CAPILLARY TUBE COMPOUND GAUGE MANIFOLD GAUGE B 1 A SEE INSETS BELOW EVAPORATOR LOW PRESSURE SIDE) COMPRESSOR - LG WG1804R | Service Manual - Page 21
Alu0 esn puielui DO1 0 0 53. 0 5 ro 5 . (7) co cp CD O3 M -c0o -aa 73 0 V- ' 0 0 To. 5ccno3 cCDo a_ RCOM-TH C HI CN-SYNC CN-4WAY FAI CAPACITOR 0` COISL MAIN POWER CO P Lt. 1 rZn 'x0 0 0 R. 2 3 5 L7 d US- sa Digl4 (5 0 .,scano. Clip (Sce • Sca SEG-a 16 15 -lEMP TEMP DOWN_ - LG WG1804R | Service Manual - Page 22
RD RY-COMP BL BL 4 r1 TRA:2 FORMER FUSE 250V/T2A (115V/T2A) 3854AR2330P WIRING DIAGRAM • MODEL : WG1804R / WG1805R WG2404R / WG2405R POWER INPUT WH(BL) BK(BR) (Ribbed) (Plain) BK. MOTOR OR BR WH(YL right reserved. Only for training and service purposes - 22 - LGE Internal Use Only - LG WG1804R | Service Manual - Page 23
O TEMP UP S O 0 AUTO S SW o 2L co O RECEIVER 0 19 O O a. O O O .2 0 . OO SZO1E O O O 0 Jul O ON/OFF 0 S 6 Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 23 - LGE Internal Use Only - LG WG1804R | Service Manual - Page 24
Troubleshooting Guide I Troubleshooting Guide CONDENSER COIL UI FAN MOTOR -at I I CAPILLARY TUBE COMPRESSOR BLOWER EVAPORATOR COIL Figure 34 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 - LG WG1804R | Service Manual - Page 25
Troubleshooting 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 - LG WG1804R | Service Manual - Page 26
Troubleshooting Guide Fails to Start Check of power source. Check of control switch setting. compressor (Motor damaged) Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 26 - Fan only fails to start. Improper wiring. Defect of fan motor capacitor. - LG WG1804R | Service Manual - Page 27
Electrical Parts Troubleshooting Guide Possible Trouble 1 The unit does not operate. Troubleshooting Guide Is the Trans output power NO AC 220V? EYES Is PCB pattern. Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 27 - LGE Internal Use Only - LG WG1804R | Service Manual - Page 28
Troubleshooting Guide Possible Trouble 2 The compressor does not operate. Is setting Temp. Diagram. YES V • Exchange IC01M. YES V • Wait 3 Minutes. • Exchange MAIN PCB Ass'y. Possible Trouble 3 The compressor always operate. Is the wire connection of NO RY-COMP all right? YES • Check the RY - LG WG1804R | Service Manual - Page 29
the RY-SYNC. • Check the connectionn of CN-SYNC. • Check the PCB pattern. Troubleshooting Guide ►{ • Exchange IC01M. • Exchange IC01M. • Exchange Micom. • Exchange IC01M. Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 29 - LGE Internal Use Only - LG WG1804R | Service Manual - Page 30
Troubleshooting Guide Possible Trouble 6 Remote controller does not operate. Is the voltage of Battery NO about over 2.3V? wYES s the voltage No.16 NO of CN-DISP on Main PCB Ass'y DC 5V? YES Is the connection of NO CN-DISP all right? YES • Exchange Receiver Ass'y. Possible Trouble 7 It - LG WG1804R | Service Manual - Page 31
Troubleshooting Guide er Voltage Limits NAME PLATE RATING 208-230±10% 115±10% MINIMUM 187V 104V MAXIMUM 253V 126V COMPLAINT Fan Replace the switch if circuit is open. Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 31- LGE Internal Use Only - LG WG1804R | Service Manual - Page 32
Troubleshooting Guide COMPLAINT CAUSE REMEDY Compressor will not run, but fan motor runs. Compressor (Discharge capacitor before servicing.) Compressor Overload Voltage Overload Fan motor Condenser air flow restriction Condenser fins (damaged) Capacitor Wiring Refrigerating system Air filter - LG WG1804R | Service Manual - Page 33
Refrigerating system Air filter Exhaust damper door Unit undersized Excessive noise. Turbo or fan Copper tubing Auto air-swing fails. Rotary switch. Wiring Synchronous motor. Troubleshooting Guide . Inc. All right reserved. Only for training and service purposes - 33 - LGE Internal Use Only - LG WG1804R | Service Manual - Page 34
4948 5901 4900 13531 OSP 14758 2 6323 4 68711 6711 4995 OCZ 47581 47581 I L Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes 68711 14681 - 34 - 5416 5014 5211 5211 LGE Internal Use Only - LG WG1804R | Service Manual - Page 35
I 3531 3531 0 .49950 - - - - ## 69300 woc 137215 C2-66002- )- 0 ,e&? I 149410 et. O 47581 jCr4758fiS) 64110 Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes - 35 - 5416 5014 211 . 5211 LGE Internal Use Only - LG WG1804R | Service Manual - Page 36
) 4948 5901 49001 14758 3531 OE> 67110 4995 • 0CZ 5416 5014 47581 47581 Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes 14681 4S) - 36 - 52111 5211 LGE Internal Use Only - LG WG1804R | Service Manual - Page 37
O LG P/NO : 3828A20294C FEBRUARY, 2008
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e
LG
Internal
Use
Only
Room
Air
Conditioner
SVC
MANUAL(Exploued
View)
MODEL
:
M1804RY3
R1804Y3
WG1804R
WG2404R
M2404ER
WG1805R
WG1800RY3
WG2405R
LWC183MGAB1
LWC183MGMM1
LWC183MSMM2
CAUTION
Before
Servicing
the
unit,
read
the
safety
precautions
in
General
SVC
manual.
Only
for
authorized
service
personnel.