GoldStar WG1805R Air Conditioner User Manual

This Owner’s Manual is provided and hosted by Appliance Factory Parts.
Appliance Factory Parts
 1-800-955-7075
GOLDSTAR WG1805R
Owner’s Manual
Shop genuine replacement parts for GOLDSTAR WG1805R

WG1805R Air Conditioner

Find Your GOLDSTAR Air Conditioner Parts – Select From 241 Models
——– Manual continues below ——– Internal Use Only
http://biz.Igservice.com
Room Air Conditioner
SVC MANUAL(Exploded View)
MODEL : M1804RY3 WG1800RY3
R1804Y3 WG2405R
WG1804R LWC183MGAB1
WG2404R LWC183MGMM1
M2404ER LWC183MSMM2
WG1805R
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.

Safety Precautions

To prevent injury to the user or other people and property damage, the following instructions must be followed.

• Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications.
  WARNING This symbol indicates the possibility of death or serious injury.
  CAUT’ON This symbol indicates the possibility of injury or damage 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.

WARNING
Installation
Do not use damaged power cord plugs, or a loose socket.

• There is risk of fire or electric shock.

Always use the power plug and socket with the ground terminal.

• There is risk of electric shock.

Do not modify or extend the power cord.

• There is risk or fire or electric shock.

Be cautious when unpacking and installing the product.

• Sharp edges could cause injury. Be especially careful of the case edges and the fins on the condenser and evaporator.

Be sure the installation area does not deterio-rate with age.

• If the base collapses, the air conditioner could fall with it, causing property damage, product failure, and per-sonal injury.

Do not install, remove, or re-install the unit by yourself.

• There is risk of fire, electric shock, explosion, or injury.

Do not store or use flammable gas or com-bustibles near the air conditioner.

Dimensions

Symbols Used in this Manual
This symbol alerts you to the risk of electric shock.
This symbol alerts you to hazards that could cause harm to the air conditioner.
NOTICE This symbol indicates special notes.

Outside Dimensions

Dimension
W| mm(inch)| 660(26″)| 660(26″)
H| mm(inch)| 428(16 27321| 428(16 27/32″
D| mm(inch)| 675(26 9/18″)| 770(30 5/16″)

Product Specifications

MODELS| WG1800RY3
LWC183MGMM2
LWC183MGMM1
M1804RY3
WG1804R| R1804Y3
LWC183841GM11| WG2404R| 112404ER| WG2405R| WG1805R
---|---|---|---|---|---|---
ITEMS
POWER SUPPLY| 1Ø, 208/230V, 60Hz
COOLING CAPACITY| 17,500/18,000| 23,500/24,000| 23,000/23,500| 23,800/23,500| 17,500/18,000
INPUT| 1,800/1,850| 2,700/2,820| 2,450/2,500| 2,800/2,760| 1,800/1,850
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)| 6259(220oz)| 985g(34.7oz)| 1,0209(36.0oz)| 710g(25oz)
OPERATING TEMPERATURE| INDOOR(t)| 27(DB),19(WB)
OUTDOOR(°C)| 35(DB),24(WB)
EVAPORATOR| 2 ROW 15 STACKS
LOUVERED-FIN TYPE| 3 ROW 15STACKS
LOUVERED-FIN TYPE| 3 ROW 18STACKS
CONDENSER| 2 ROW 19 STACKS,LOUVERED-FIN TYPE| 2 ROW 19 STACKS
L-BENDING TYPE
FAN, INDOOR| TURBO
FAN, OUTDOOR| PROPELLER TYPE FAN WITH SLINGER-RING
FAN SPEEDS, FAN/COOLING| 3/3| 2/3| 3/3
FAN MOTOR| 6 POLES
OPERATION CONTROL| WIRELESS REMOCON| ROTARY MICR| WIRELESS REMOCN
ROOM TEMP. CONTROL| THERMOSTAT| THERMOSTAT| THERMISTOR
AIR DIRECTION CONTROL| VERTICAL LOUVER(RIGHT & LEFT)
HORIZONTAL LOUVER(UP & DOWN)
CONSTRUCTION| SLIDE IN-OUT CHASSIS
PROTECTOR| COMPRESSOR| INTERNAL OVERLOAD PROTECTOR
FAN MOTOR| INTERNAL THERMAL PROTECTOR
POWER CORD| 3 WIRE WITH GROUNDING
CORD-CONNECTED TYPE(ATTATCHMENT PLUG:OPTION)
DRAIN SYSTEM| DRAIN PIPE OR SPLASHED BY FAN SLINGER
NET WEIGHT| (lbs/kg)| 130/60| 147.7/67| 130/60
OUTSIDE DIMENSION| (inch)| 26 x 16 27/32 x 26 9/16| 26 x16 27/32 x 30 5/16| 26x1627132z26818
(WxHxD)| (mm)| 660 x 428 x 675| 660 x 428 x 770| 660x428x675

Installation

Select the Best Location

1. To prevent 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.

3. The outside of the cabinet must extend outward for at least 30cm and there should be no obstacles, such as a fence or wall, within 50cm from the back of the cabinet because it will prevent heat radiation of the condenser.
   Restriction of outside air will greatly reduce the cooling efficiency of the air conditioner. CAUTION: All side louvers of the cabinet must remain exposed to the outside of the structure.

4. Install the unit a little slanted so the back is slightly lower than the front (about 10~15mm). This will help force con- densed water to the outside.

5. Install the unit from the bottom about 75~150cm above the floor level.

Installation Check
The setting conditions must be checked prior to initial starting.
The following items are especially important checking points when the installation is finished.

1. Grounding wire (Green or Green and Yellow) is provided in the power cord. The green wire must be grounded.
2. Connect to a single-outlet 15A circuit. (or 20A circuit for Electric Heater Model)
3. To avoid vibration or noise, make sure the air conditioner is installed securely.
4. Avoid placing furniture or draperies in front of the air inlet and outlet.

How to secure the Drain Pipe
In humid weather, excess water may cause the BASE PAN to overflow. To drain the water, remove the DRAIN CAP and secure the DRAIN PIPE to the rear hole of the BASE PAN. Press the drain pipe into the hole by pushing down and away from the fins to avoid injury.

Optional

1. Install the drain pan over the comer of the cabinet where you removed the plug with 4 (or 2) screws.

2. Connect the drain hose to the outlet located at the bottom of the drain pan.
   You can purchase the drain hose or tubing locally to satisfy your particular needs. (Drain hose is not supplied).

3. Select the most appropriate connection from among the following figures (by considering the hole of the unit) to fit drain pan to your own unit.

Window Requirements

NOTICE All supporting parts should be secured to firm wood, masonry, or metal.

1. This unit is designed for installation in standard dou- ble hung windows with actual opening widths from 26″to 41″,
   The top and bottom window sashes must open suffi-ciently to allow a clear vertical opening of 18″ from the bottom of the upper sash to the window stool.

2. The stool offset (height between the stool and sill) must be less than 1 1/4″.

Installation Kits Contents

Suggested Tool Requirements
PREPARATION OF CHASSIS

1. Remove the screws which fasten the cabinet at both sides and at the back.
2. Slide the unit out from the cabinet by gripping the base pan handle and pulling forward while bracing the cabinet.
3. Cut the window sash seal to the proper length. Peel off the backing and attach the Foam-PE to the underside of the window sash.
4. Remove the backing from Foam-PE with 3 holes and attach it to the bottom of the Top retainer bar.
5. Attach the Top retainer bar on the top of the cabinet with 3 screws (Type A).
6. Insert the Frame guides into the bottom of the cabi-net.
7. Insert the Frame Curtain into the Top retainer bar and Frame guides.
8. Fasten the curtains to the unit with 10 screws (Type A) at both sides.

Cabinet Installation

1. Open the window. Mark a line on the center of the window stool between the side window stop mold- ings.
   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 the cabinet on the window stool and align the center mark on the bottom front with the center line marked window stool.

3. Using the M-screw and the lock nut, attach the sup-port bracket to the cabinet track hole. Use the first track hole after the sill bracket on the outer edge of the window sill. Tighten the carriage bolt and the lock nut. Be sure the cabinet slants outward.
   CAUTION: Do not drill a hole in the bottom pan. The unit is designed to operate with approximately 1/2″ of water in bottom pan.

4. Pull the bottom window sash down behind the Top retainer bar until they meet. NOTICE
   1. Do not pull the window sash down so tightly that the movement of Frame curtain is restricted. Attach the cabinet to the window stool by driving the screws (Type B) through the cabinet into window stool.
   2. The cabinet should be installed with a very slight tilt downward toward the outside.

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. 11)

7. Slide the unit into the cabinet.(See Fig. 12)
   CAUTION: For security purpose, rein- A stall screws(Type A) at cabinet’s sides

8. Cut the Foam-strip to the proper length and insert between the upper window sash and the lower win-dow sash.(See Fig. 13)

9. Attach the Window locking bracket with a screw (Type C.) (See Fig. 14)

10. Attach the front grille to the cabinet by inserting the tabs on the grille into the tabs on the front of the cabinet. Push the grille in until it snaps into place.(See Fig.15)

11. Lift the inlet grille and secure it with a screw (Type A) through the front grille.(See Fig. 15)

12. Window installation of room air conditioner is now completed. See ELECTRICAL DATA for attaching power cord to electrical outlet.

Operation

Features

• 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 compressor

Control Locations Function of Controls

1. Cooling Only Model
   • VENTILATION
   The ventilation lever must be in the CLOSE position in order to maintain the best cooling conditions.
   When a fresh air is necessary in the room, set the ventilation lever OPEN position.
   The damper is opened and room air is exhausted. NOTICE
   Before using the ventilation feature, make the lever, as shown. First, pull down part A to horizontal line with part B.
   •  THERMOSTAT
   Thermostat will automatically control the temperature of the room. Select a higher number for a cooler tem-perature in the room. The temperature is selected by positioning the knob to the desired position.
   The 5 or 6 position is a normal setting for average conditions.
   • OPERATION
   OFF : Turns the air conditioner off.
   MED FAN : Permits the medium fan speed operation without cooling.
   LOW FAN : Permits the low fan speed operation without cooling.
   HIGH COOL : Permits cooling with the high fan speed operation.
   MED COOL : Permits cooling with the medium fan speed operation.
   LOW COOL : Permits cooling with the low fan speed operation. •  AUTO SWING
   ON : Air swing is operated while OPERATION knob is set to the COOL position.
   OFF : Stops the operation of air swing.

2. Cooling Only Model with Remote Control and Touch Type

PRECAUTION: The Remote Control unit will not function properly if bright light strikes the sensor window of the air conditioner or if there are obstacles between the Remote Control unit and the air conditioner.

1. POWER BUTTON
   Operation starts, when this button is pressed and stops when you press the button again.

2. OPERATION MODE SELECTION BUTTON
   Select Cooling, or Fan or Dehumid mode with button. (Dehumid mode is not to all models.)

3. ON/OFF TIMER BUTTON
   Set the time of starting and stopping operation. The timer is set by 1 hour.

4. FAN SPEED SELECTOR
   Select the fan speed in three steps.
   – High [F3] » Low{F1] » Med[F2] – High[F3]…

5. ROOM TEMPERATURE SETTING BUTTON
   Control the room temperature within a range of 60°F to 86°F by 1°F.

6. ENERGY SAVER(Available In some models)
   The fan stops when the compressor stops cooling.
   Approximately every 3 minutes the fan will turn on and check the room air to determine if cooling is needed.

7. AUTO SWING BUTTON
   Control the horizontal air direcion by air swing system.

AUTO RESTART
In case the power comes on again after a power failure, the unit runs as previous setting operation.(Available in some models)

Disassembly

— Before the following disassembly, CONTROL BOX set to OFF and disconnect the power cord.

Mechanical Parts

1. Front Grille
   1. Open the Inlet grille upward .
   2. Remove the screw that fastens the front grille.
   3. Pull the front grille from the right side.
   4. Remove the front grille.
   5. Re-install the component by referring to the removal procedure, above.(See Figure 17)
   NOTICE Mark ” “of inlet grille means opening d irection.

2. Cabinet
   1. After disassembling the FRONT GRILLE, remove the
   2 screws that fasten the cabinet at both sides.
   2. Remove the 2 screws that fasten the cabinet at back.
   3. Pull the base pan forward. (See Figure 18)
   4. Remove the cabinet.
   5. Re-install the component by referring to the removal procedure, above.

3. Control Box
   1. Remove the front grille. (Refer to section 17)
   2. Remove the cabinet. (Refer to section 18)
   3.Remove the 2 screws that fasten the control box cover.
   4. Remove two housings that connect compressor wire and motor wire in the control box.
   5. Discharge the capacitor by placing a 20,000 ohm resistor across the capacitor terminals.
   6. Remove the 2 screws that fasten the control box.
   7. Pull the control box forward completely.
   8. Re-install the components 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.) Air Handling Parts

4. Cover (at the top)
   1. Remove the front grille. (Refer to section 17)
   2. Remove the cabinet. (Refer to section 18)
   3. Remove 11 screws which fasten the brace and covers.
   4. Remove the covers and the brace. (See Fig. 20)
   5. Re-install the components by referring to the removal procedure, above.

5. Blower
   1. Remove the cover. (Refer to section 20)
   2. Remove the 3 screws which fasten the evaporator at the left side and 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. Remove the blower with plier or your hand without touching blades. (See Fig. 22)
   7. Re-install the components by referring to the removal procedure, above.

6. Fan
   1. Remove the cabinet. (Refer to section 18)
   2. Remove the brace and shroud cover.
   (Refer to section 20)
   3. Remove the 5 screws which fasten the condenser.
   4. Move the condenser sideways carefully.
   5. Remove the clamp which secures the fan.
   6. Remove the fan. (See Figure 23)
   7. Re-install the components by referring to the removal procedure, above.

7. Shroud
   1. Remove the fan. (Refer to section 21)
   2. Remove the screw that fastens the shroud.
   3. Remove the shroud. (See Figure 24)
   4. Re-install the component by referring to the removal procedure, above. Electrical Parts

8. Motor
   1. Remove the cabinet. (Refer to section 18)
   2. Remove the cover control and disconnect a wire housing in control box. (Refer to section 19)
   3. Remove the blower. (Refer to section 21)
   4. Remove the fan. (Refer to section 22)
   5. Remove the 4 screws which fasten the motor. (See Figure. 25)
   6. Remove the motor.
   7. Re-install the components by referring to the removal procedure, above.

9. Compressor
   1 . Remove the cabinet. (Refer to section 18)
   2. Discharge the refrigerant system using Freon™ Recovery System.
   If there is no valve to attach the recovery system, install one (such as a WATCO A-1) before venting the Freon™. Leave the valve in place after servicing the system.
   3. Disconnect the 3 leads from the compressor.
   4. After purging the unit completely, unbrace the suc-tion and discharge tubes at the compressor con- nections.
   5. Remove the 3 nuts and the 3 washers which fas-ten the compressor.
   6. Remove the compressor. (See Figure 26)
   7. Re-instill the components by referring to the removal procedure, above.

10. Capacitor
    1. Remove the control box. (Refer to section 19)
    2. Remove the knobs and the screw that fasten control panel from control box.
    3. Remove the screw that located in the front.
    4. Open the bottom side of control box.
    5. Remove the screw and the clamp that fastens the capacitor.
    6. Disconnect all the leads of capacitor terminals.
    7. Re-install the components by referring to the removal procedure, above. (See Figure 27)

11. Power Cord
    1. Remove the control box. (Refer to section 19)
    2. Open the control box. (Refer to section 25)
    3. Disconnect the grounding screw from the control box.
    4. Disconnect the 2 receptacles.
    5. Remove a screw which fastens the clip cord. (See Figure 28)
    6. Remove the power cord.
    7. Re-install the component by referring to the above removal procedure, above.
    (Use only one ground-marked hole for ground connection.)
    8. If the supply cord of this appliance is damaged, it must be replaced by the special cord. (The special cord means the cord that has the same specification marked on the supply cord attached at the unit.)

12. Thermistor
    1. Remove the control box. (Refer to section 19)
    2. Unfold the control box. (Refer to section 25)
    3. Disconnect the themistor terminals from main P.W.B Assembly.
    4. Remove the thermistor.
    6. Re-install the components by refereing to the above removal procedure above. (See Figure 29)

13. Synchronous Motor
    1. Remove the control box. (Refer to section 19)
    2. Unfold the control box. (Refer to section 25)
    3. Remove the crankshaft.
    4. Disconnect all the leads of the synchronous motor.
    5. Remove the 2 screws which fasten the syn-chronous motor. (See Figure. 30)
    6. Re-install the components by referring to the above removal procedure above. Refrigerating Cycle
    CAUTION: Discharge the refrigerant system using a Freon™ Recovery System. If there is no valve to attach the recovery system, install one (such as a WATCO A-1) before venting the Freon™. Leave the valve in place after servicing the system.

14. Condenser
    1. Remove the cabinet. (Refer to section 18)
    2. Remove the 4 screws that fasten the brace.(Refer to section 20)
    3. Remove the 5 screws that fasten the condenser and shroud.
    4. After discharging the refrigerant completely, unbraze the interconnecting tube at the condenser connections.
    5. Remove the condenser.
    6. Re-install the component by referring to notes.
    (See Figure 31)

15. evaporator
    1. Remove the cabinet. (Refer to section 18)
    2. Remove the 2 screws that fasten the evaporator.
    3. Move the evaporator sideways carefully.
    (Refer to section 20)
    4. After discharging the refrigerant completely, unbraze the interconnecting tube at the evaporator connections.
    5. Remove the evaporator.
    6. Re-install the component by referring to notes.
    (See Figure 32)

16. Capillary Tube
    1. Remove the cabinet. (Refer to section 18)
    2. After discharging the refrigerant completely, unbraze the interconnecting tube at the capillary tube.(See caution above)
    3. Remove the capillary tube.
    4. Re-install the component by referring to notes.

NOTICE
— Replacement of the refrigeration cycle.

1. When replacing the refrigeration cycle, be sure to Discharge the refrigerant system using a Freon™ recovery System.
   If there is no valve to attach the recovery system, install one (such as a WATCO A-1) before venting the Freon™. Leave the valve in place after servicing the system.

2. After discharging the unit completely, remove the desired component, and unbraze the pinch-off tubes.

3. Braze service valves into the pinch-off tube ports, leaving the valves open.

4. Braze the pinch-off tubes with Service valves.

5. Evacuate as follows.

1. Connect the vacuum pump, as illustrated figure 33A.
2. Start the vacuum pump, slowly open manifold valves A and B with two full turns counterclockwise and leave the valves open.
   The vacuum pump is now pulling through valves
   A and B up to valve C by means of the manifold and entire system.
   CAUTION: If high vacuum equip-ment is used, just crack valves A and B for a few minutes, then open slowly with the two full turns counterclockwise.
   This will keep oil from foaming and being drawn into the vacuum pump.
3. Operate the vacuum pump vaccum for 20 to 30 minutes, until 600 microns of vaccum is obtained.
   Close valves A and B, and observe vacuum gauge for a few minutes. A rise in pressure would indi- cate a possible leak or moisture remaining in the system. With valves A and B closed, stop the vac- uum pump.
4. Remove the hose from the vacuum pump and place it on the charging cylinder. See figure 33B.
   Open valve C.
   Discharge the line at the manifold connection.
5. The system is now ready for final charging.

6. Recharge as follows :

1. Refrigeration cycle systems are charged from the High-side. If the total charge cannot be put in the High-side, the balance will be put in the suction line through the access valve which you installed as the system was opened.
2. Connect the charging cylinder as shown in figure 33B.
   With valve C open, discharge the hose at the mani- fold connection.
3. Open valve A and allow the proper charge to enter the system. Valve B is still closed.
4. If more charge is required, the high-side will not take it. Close valve A.
5. With the unit running, open valve B and add the balance of the charge.
   a. Do not add the liquid refrigerant to the Low- side.
   b. Watch the Low-side gauge; allow pressure to rise to 30 Ibs (0.2Mp).
   c. Turn off valve B and allow pressure to drop.
   d. Repeat steps b. and c. until the balance of the charge is in the system.
6. When satisfied the unit is operating correctly, use the pinch-off tool with the unit still running and clamp on to the pinch-off tube. Using a tube cutter, cut the pinch-off tube about 2 inches from the pinch-off tool. Use sil-fos brazing rod and braze pinch-off tube closed. Tum off the unit, allow it to set for a while, and then test the leakage of the pinch-off connection.

Equipment needed: Vacuum pump, Charging cylinder, Manifold gauge, Brazing equipment. Pin-off tool capable of making a leak-proof seal, Leak detector, Tubing cutter, Hand Tools to remove components, Service valve.

Schematic Diagram

Electronic Control Device

Wiring Diagram

• MODEL : M1804RY3 LWC183MGAB1
• MODEL : R1804Y3, WG1800RY3
M2404ER, LWC183MGMM1
LWC183MSMM2
•  MODEL : WG1804R / WG1805R WG2404R / WG2405R

Components Location
Main P.W.B Assembly

Display P.W.B Assembly

Display P.W.B Assembly

Troubleshooting Guide

Piping System

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 refrigeration cycle and the flow of the refrigerant in the cooling cycle.

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. Electrical Parts Troubleshooting Guide
Possible Trouble 1 The unit does not operate.

Possible Trouble 2 The compressor does not operate. Possible Trouble 3 The compressor always operate. Possible Trouble 4  FAN does not operate. Possible Trouble 5  Auto Swing does not operate. Possible Trouble 6 Remote controller does not operate. Possible Trouble 7 It displays abnormally on display PCB Ass’y.

Room Air Conditioner Voltage Limits

Compressor will not run, but fan motor runs.Thermostat

necessary.
Power supply cord| Check voltage to rotary switch. If none, check power supply cord. Replace cord if circuit is open.
Rotary switch| Check switch continuity. Refer to wiring diagram for terminal identification. Replace switch if defective.
Wire disconnected or con- nection loose| Connect wire. Refer to wiring diagram for terminal identification. Repair or replace loose terminal.
Capacitor (Discharge capacitor before testing.)| Test capacitor.
Replace if not within ±10% of manufacturers rating. Replace if shorted, open, or damaged.
Will not rotate| Fan blade hitting shroud or blower wheel hitting scroll. Realign assembly.
Units using slinger ring for condenser fan must have 1/4 to 5/16 inch clearance to the base. If it hits the base, shim up the bottom of the fan motor with mounting screw(s).
Check fan motor bearings; if motor shaft will not rotate, replace the motor.
Fan motor runs intermittently| Revolves on overload.| Check voltage. If not within limits, call an electrician.
Test capacitor.
Check bearings. Does the fan blade rotate freely? If not, replace fan motor.
Pay attention to any change from high speed to
low speed. If the speed does not change, replace the motor.
Fan motor noise.| Fan| If cracked, out of balance, or partially missing, replace it.
Turbo| If cracked, out of balance, or partially missing, replace it.
Loose damper| Tighten it.
Worn bearings| If knocking sounds continue when running or loose, replace the motor. If the motor hums or noise appears to be internal while running, replace motor.
Compressor will not run, but fan motor runs.| Voltage| Check voltage.
If not within limits, call an electrician.
Wiring| Check the wire connections, if loose, repair or replace the terminal. If wires are off, refer to wiring diagram for identification, and replace. Check wire locations. If not per wiring diagram, correct.
Rotary| Check for continuity, refer to the wiring diagram for terminal identification. Replace the switch if circuit is open.
Thermistor| 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.
Capacitor (Discharge capacitor before servicing.)| Check the capacitor.
Replace if not within ±10% of manufacturers rating. Replace if shorted, open, or damaged.
Compressor| Check the compressor for open circuit or ground. If open or grounded, replace the compressor.
Overload| Check the compressor overload, if externally mounted. Replace if open. (If the compressor temperature is high, remove the overload, cool it, and retest.)
Compressor cycles on overload.| Voltage| Check the voltage.
If not within limits, call an electrician.
Overload| Check overload, if externally mounted.
Replace if open. (If the compressor temperature is high, remove the overload, cool, and retest.)
Compressor cycles on overload.Compressor cycles on overload.| Fan motor| If not running, determine the cause. Replace if required.
Condenser air flow restric- tion| Remove the cabinet. inspect the interior surface of the condenser; if restricted, clean carefully with a vacuum cleaner (do not damage fins) or brush. Clean the interior base before reassembling.
Condenser fins (damaged)| If condenser fins are closed over a large area on the coil surface, head pressures will increase, causing the compressor to overload. Straighten the fins or replace the coil.
Compressor cycles on overload.| Capacitor| Test capacitor.
Wiring| Check the terminals. If loose, repair or replace.
Refrigerating system| Check the system for a restriction.
Insufficient cooling or heat- ing| Air filter| If restricted, clean of replace.
Exhaust damper door| Close if open.
Unit undersized| Determine if the unit is properly sized for the area to be cooled.
Excessive noise| Turbo or fan| Check the set screw or clamp. If loose or missing, correct. If the turbo or fan is hitting air guide, rearrange the air handling parts.
Copper tubing| Remove the cabinet carefully and rearrange tubing not to contact cabinet, compressor, shroud, and barrier.
Compressor cycles on overload.| Capacitor| Test capacitor.
Wiring| Check the terminals. If loose, repair or replace.
Refrigerating system| Check the system for a restriction.
Insufficient cooling or heat-
ing| Air filter| If restricted, clean of replace.
Exhaust damper door| Close if open.
Unit undersized| Determine if the unit is properly sized for the area to
be cooled.
Excessive noise.| Turbo or fan| Check the set screw or clamp. If loose or missing,
correct. If the blower or fan is hitting air guide,
rearrange the air handling parts.
Copper tubing| Remove the cabinet and carefully rearrange tubing
not to contact cabinet, compressor, shroud, and bar-
rier.
Auto air-swing fails.| Rotary switch.| Set the knob to HIGH COOL or LOW COOL while
rocker switch is ON.
Wiring| Check terminals. If loose, repair or replace.
Synchronous motor.| Check the synchronous motor for open circuit.

Exploded View

Model :LWC243NGMM2, LWC243NBMM1, LWC183MNMM2, LWC183MNMM1, LWC183MGMM1 Model : LWC183MGAB1 Model : LWC183MBMM4

Copyright ©2008 LG Electronics.
Inc. All right reserved.
Only for training and
service purposes
LGE Internal Use Only
P/NO : 3828A20294C
FEBRUARY, 2008

References

• Repair Your Grill: Shop Replacement Parts for 24,880 Models
• Goldstar Air Conditioner Parts - Select From 241 Models

Read User Manual Online (PDF format)

Read User Manual Online (PDF format)  >>

Download This Manual (PDF format)

Download this manual  >>