LG WG1804R Support and Manuals
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Service Manual - Page 1
e LG
Internal Use 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 service personnel.
Service Manual - Page 2
...Requirements
9
Cabinet Installation
10
Operation
12
Features
12
Control Locations Function of Controls
12
Disassembly
14
Mechanical Parts
14
Air Handling Parts
15
Electrical Parts
16
Refrigerating Cycle
18
Schematic Diagram
21
Electronic Control Device
21
Wiring Diagram
22
Components Lation
23
Troubleshooting Guide
24
Piping System
24
Troubleshooting Guide
25
Room...
Service Manual - Page 3
... injury or damage to do. All right reserved.
3
Only for training and service purposes
LGE Internal Use Only ACAUTION This symbol indicates the possibility of symbols used in this manual are as shown below. Be sure to follow the instruction.
• Installation
AWARNING
Do not use the power plug and socket with the ground...
Service Manual - Page 5
NOTICE This symbol indicates special notes.
675 (770)
@ )I
660
CO
•C:\rI
qg,;o1e1c1.O1
Dimension W H D
Model
mm(inch) mm(inch) mm(inch)
18K Btu
660(26") 428(16 27/32") 675(26 9/13")
24K Btu
660(26") 428(16 ...
A
This symbol alerts you to hazards that could cause harm to the risk of electric shock. All right reserved.
5
Only for training and service purposes
LGE Internal Use Only
Service Manual - Page 6
Only for training and service purposes
- 6- Specfications
a.] Product Specifications
Table -1
ITEMS
MODELS
WG180ORY3 LWC183MGMM2 LWC183MGMM1
M1804RY3
R1804Y3 LWC183MGAB1
WG1804R
WG2404R
M2404ER
WG2405R
WG1805R
POWER SUPPLY
10, 208/230V, 60Hz
COOLING CAPACITY
17,500/18,000
23,500/24,000 23,000/23,500 23,...
Service Manual - Page 7
...Model) 3. Connect to the outside.
5.Install the unit from among the following items are especially important checking points when the installation is provided in front of the air inlet and outlet.
Install...
ABOUT 10-15mm Over 50cm
WAWAVON
Figure 1
Installation Chec
The setting conditions must extend outward for training and service purposes
- 7- Press the drain pipe into the...
Service Manual - Page 12
...set the ventilation lever OPEN position. First, pull down part ® to the desired position. Select a higher number for a cooler temperature in and slide-out chassis for the simple instal... temperature is a normal setting for training and service purposes
- 12 - LOW COOL : Permits cooling with part (D.
OFF : Stops the operation of the room. Cooling Only Model
• VENTILATION
The ...
Service Manual - Page 13
...power failure, the unit runs as previous setting operation.(Available in three steps. - Approximately...WG1804R
WG2404R WG2405R
Power
T
• Temp •
0 O
Temp • ;T) n. Operation
2. AUTO RESTART
[ In case the power comes on and check the room air to determine if cooling is not to 86°F by air swing system. Only for training and service purposes
- 13 - Cooling Only Model...
Service Manual - Page 14
...set to the removal
000
procedure, above . Remove the screw that fasten the control box. 7. Re-install...compressor wire
and motor wire in this manual and on page 23 in the ...Re-install the components by referring to OFF and disconnect the power cord. Mechanical Part
1. ...install the component by placing a 20,000 ohm
resistor across the capacitor terminals. 6. Only for training and service...
Service Manual - Page 19
...remaining in place after servicing the system. 2. Discharge the line at the manifold connection. 3) Open valve A and allow pressure to 30 lbs (0.2Mp). a. allow it to set for 20 to the... full turns counterclockwise. When replacing the refrigeration cycle, be put in the system. 6) When satisfied the unit is now pulling through the access valve which you installed as the system was opened...
Service Manual - Page 22
... BR
RY-SYNC
R
COMP. Only for training and service purposes
- 22 -
M. Inc. LGE Internal Use Only SYNC.
Schematic Diagram
• MODEL : M1804RY3 LWC183MGAB1
• MODEL : R1804Y3, WG1800RY3 M2404ER, LWC183MGMM1 LWC183MSMM2
ROTARY SWITCH
7...)
3854AR2330P WIRING DIAGRAM
• MODEL : WG1804R / WG1805R WG2404R / WG2405R
POWER INPUT
WH(BL)
BK(BR)
(Ribbed)
(Plain)
...
Service Manual - Page 25
... Overloaded circuit Check inside gas pressure. Replacement of unit if the unit is beyond repair. Correct above trouble
Check clogging in refrigera- Only for smooth flow. Troubleshooting Guide
In general, possible trouble is ineffective Air Conditioning caused by a defect in the refrigeration circuit and improper application.
Replacement of compressor. F t_ tion circuit. Satisfactory...
Service Manual - Page 26
....
Only for training and service purposes
- 26 - Defect of control switch setting. Irregular motor resistance
( 0). Replacement of compressor (locking of compressor (Motor damaged)
Copyright ©2008 LG Electronics.
All right reserved.
Irregular motor resistance (Q)
Irregular motor insulation ( 0 )
Replacement of rotor, metal). Troubleshooting Guide
Fails to start.
Service Manual - Page 28
... Check the RY-COMP.
Troubleshooting Guide
Possible Trouble 2 The compressor does not operate. set lower than Roo
NO
Temp.-0.5°C?
• Select the setting Temp.
LGE Internal Use ...service purposes
- 28 -
pp.. • Connect LEAD Wire to lower Number.
YES V • Exchange IC01M. YES V • Wait 3 Minutes.
• Exchange MAIN PCB Ass'y.
Possible Trouble...
Service Manual - Page 32
... interior base before servicing.) Compressor Overload
Voltage Overload
Fan motor Condenser air flow restriction
Condenser fins (damaged)
Capacitor Wiring Refrigerating system Air filter ...set screw or clamp. Replace if required. Check the system for open .
Inc.
Check the TEMP control. If loose, repair or replace. If restricted, clean of the thermostat.
Troubleshooting Guide...
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