LG L6004R Room Air Conditioner Instruction Manual

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Owner’s Manual
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Window Air Conditioner
SVC MANUAL(General)
MODEL : Window**

L6004R Room Air Conditioner

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.
CAUTION This symbol indicates the possibility of injury or damage to properties only.

• Meanings of symbols used in this manual are as shown below.
  | Be sure not to do.
  ---|---
  | Be sure to follow the instruction.
  | Dangerous Voltage

1.1 Cautions in Repair

WARNING

SAFETY PRECAUTIONS
1.   When servicing the unit, set the main SWITCH to OFF and remove the POWER SUPPLY cables.
2.   Observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit.
3.   After servicing the unit, make an insulation resistance test to protect the customer from being exposed to shock hazards.| ****
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INSULATION RESISTANCE TEST
1.  Unplug the power cord and connect a jumper between 2 pins (black and white).
2.   The grounding conductor (green or green & yellow) is to be open.
3.   Measure the resistance value with an ohm meter between the jumpered lead and each exposed metallic part on the equipment.
4.   The value should be over 1MW.| ****

Be sure to disconnect the power cable plug from the plug socket before disas sembling the equipment for a repair.Internal components and circuit boards are at main potential when the equipment is connected to the power cables. This volt- age is extremely dangerous and may cause death or severe injury if come in con- tact with it.| **
Do not touch the discharging refrigerant gas during the repair work. The discharging refrigerant gas.The refrigerant gas can cause frostbite.|

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Release the refrigerant gas completely at a well-ventilated place first. Otherwise, when the pipe is disconnected, refrigerant gas or refrigerating machine oil discharges and it Can cause injury.| **
When the refrigerant gas leaks during work, execute ventilation. If the refrigerant gas touches to a fire, poisonous gas generates. A case of leakage of the refriger- ant and the closed room full with gas is dangerous because a shortage of oxy- gen occurs. Be sure to execute ventilation.| ****
When removing the front panel or cabinet, execute short-circuit and discharge between high voltage capacitor terminals. If discharge is not executed, an elec- tric shock is caused by high voltage resulted in a death or injury.|

Do not turn the air-conditioner ON or OFF by plugging or unplugging the power plug. There is risk of fire or electrical shock.|
Do not use a defective or underrated circuit breaker. Use the correctly rated breaker and fuse. Otherwise there is a risk of fire or electric shock.|
Install the panel and the cover of control box securely. Otherwise there is risk of fire or electric shock due to dust, water etc.|
Indoor/outdoor wiring connections must be secured tightly and the cable should be routed properly so that there is no force pulling the cable from the connection terminals. Improper or loose connections can cause heat generation or fire.| ****
Do not touch, operate, or repaire the product with wet hands. Hoding the plug by hand when taking out. Otherwise there is risk of electric shock or fire.|

CAUTION

Do not turn on the breaker under condition that front panel and cabinet are removed.|
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Be sure to earth the air conditioner with an earthing conductor connected to the earthing terminal.|
Conduct repair works after checking that the refrigerating cycle section has cooled down sufficiently. Otherwise, working on the unit, the hot refrigerating cycle section can cause burns.|
Do not tilt the unit when removing panels. Otherwise, the water inside the unit can spill and wet floor.|
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Do not use the welder in a well-ventilated place. Using the welder in an enclosed room can cause oxygen deficiency.|
Be sure to turn off power switch before connect or disconnect connector, or parts damage may be occurred.|

1.2 Inspections after Repair

WARNING

Check to see if the power cable plug is not dirty or loose. If the plug is dust or loose it can cause an electrical shock or fire.|
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Do not use a joined power cable or extension cable, or share the same power outlet with other electrical appliances. otherwise, it can cause an electrical shock, excessive heat generation or fire.|
Do not insert hands or other objects through the air inlet or outlet while the prod- uct is operating. There are sharp and moving parts that could cause personal injury.| ****
Do not block the inlet or outlet of air flow. It may cause product failure|

CAUTION

Check to see if the parts are mounted correctly and wires are connected. Improper installation and connections can cause an electric shock or an injury.|
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Check the installation platform or frame has corroded. Corroded installation plat- form or frame can cause the unit to fall, resulting in injury.|
Be sure to check the earth wire is correctly connected.|
After the work has finished, be sure to do an insulation test to check the resist tance is 2[Mohm] or more between the charge section and the non-charge metal section (Earth position). If the resistance value is low, a disaster such as a leak or electric shock is caused at user’s side.|
Check the drainage of the indoor unit after the repair. If drainage is faulty the water to enter the room and wet floor.| ****

Operation

Features

• Designed for COOLING ONLY.
• Powerful and whispering cooling.
• Slide-in and slide-out chassis for the simple installation 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. • THERMOSTAT
   Thermostat will automatically control the temperature of the room. Select a higher number for a cooler temperature in the room. The temperature is selected by positioning the knob to the desired position.
   The 5or 6 position is a normal setting for average conditions.
   • OPERATION

CAUTION : A slight heat odor may come from the unit when first switching to HEAT after the cooling season is over. This odor, caused by fine dust particles on the heater, will disappear quickly.

2. Heat Pump Model
   • HEATER LAMP
   When the unit sets heating operation condition, the green lamp is lighted.
   When the frost settles on the heat exchanger of the outside, defrosting is made automatically and the green lamp is unlighted. The until it may hiss and the fan motor will stop for 1 to 10 minutes.
   This should not be regarded as trouble. After defrosting, the heating operation begins again. • THERMOSTAT
   Turn the thermostat control to the desired setting.
   The central position is a normal setting for average conditions. You can change this setting, if necessary, in accordance with your temperature preference.
   The thermostat automatically controls cooling or heating, but the fan runs continuously whenever the air conditioner is in operation. If the room is too warm, turn the thermostat control clockwise. If the room is too cool, turn the the most at control counterclockwise. • OPERATION
   OFF ( ) : Turns the air conditioner off.
   LOW FAN ( ) : Permits the low fan speed operation without cooling (or heating).
   LOW COOL ( ) : Permits cooling with the low fan speed operation.
   HIGH COOL ( ): Permits cooling with the high fan speed operation.
   LOW HEAT ( ): Permits heating with the low fan speed operation.
   HIGH HEAT ( ) : Permits heating with the high fan speed operation.

3. Cooling and Heating Model with Remote Control and Touch Type
   DISPLAY REMOTE CONTROL 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, Heating, or Fan mode with this button.
   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. Cooling Model: 3 steps {High[F3] ➔ Low[F1] ➔ Med[F2]➔ High[F3]… }
   Heating Model: 2 steps {High [F2] ➔ Low[F1] ➔ High[F2]… }
   5. 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.
   6. SIGNAL RECEIVER
   7. AUTO SWING
   The vertical louver swings horizontally by the automatic system and stops when you press the button again.

Troubleshooting Guide

Piping System

Figure 32 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.

ROOM AIR CONITIONER
CYCLE OF REFRIGERATION

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 cooling.

Electrical Parts Troubleshooting Guide
LWC1264PAG/PAN/PCG, LWC1264QAG/QAS, LWC126CBHK0, LWC126CGMM0/CBMM1/LWC096CBMK0

Possible Trouble 1 The unit does not operate. Possible Trouble 2 The compressor does not operate.

Possible Trouble 4 FAN does not operate.

Possible Trouble 6 Remote controller does not operate.

LWC1264PBG/PHG, LWC1264VBS/QBG

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 Remote controller does not operate.

Possible Trouble 6 It displays abnormally on display PCB Ass’y.

Possible Trouble 7 The function of Auto Restart does not operate.

Room Air Conditioner Voltage Limits

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 manufacturer’s 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 clamper| 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.
COMPLAINT| CAUSE| REMEDY
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Compressor will not run, but fan motor runs.| Thermostat| Check the position of knob If not at the coldest set- ting, advance the knob to this setting and restart unit. Check continuity of the thermostat. Replace thermo- stat 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 mount- ed. 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.| Fan motor| If not running, determine the cause. Replace if required.
Condenser air flow restriction| 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 bar rier.

P/NO : MFL37825901
JANUARY, 2007

Documents / Resources

| LG L6004R Room Air Conditioner [pdf] Instruction Manual
L6004R, Window, L6004R Room Air Conditioner, L6004R, Room Air Conditioner, Air Conditioner, Conditioner
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References

• below.Be
• diagram.Is
• realtime.at - Domain catched
• Repair Your Grill: Shop Replacement Parts for 24,880 Models
• Lg Air Conditioner Parts - Select From 2329 Models

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