LG Room Air Conditioner
Table of Contents
LG Model Name
2002
Code Type Code of Model Meaning
Meaning
2003~2005
Installation
Safety Precautions
There is risk of fire, electric shock, explosion, or injury
Thinner
Operation
Be cautious that water could not enter the product
Keep level even when installing the product
Operation
9k, 12k Btu Series
Dimensions
Symbols Used in this Manual
Indoor Unit
Outdoor Unit
AS-W096U0 AS-W126U0 AS-W096U1 AS-W126U1
Product Specifications
Outdoor unit
Installation
Select the best Location
Indoor unit
Fixing Installation Plate
Oil trap should be installed every 5~7 meters
Piping Length and Elevation
Flaring Work
Drill a Hole in the Wall
Foamed polyethylene or equivalent is recom- mended
Connecting the Piping
Check
Indoor
Wrap the insulation material around the connecting portion
For left rear piping
Indoor unit installation
Bad case
For left piping. Follow the instruction below Good case
Outdoor unit
Outdoor
Connecting the Cables
Circuit Grade Breaker
Checking the Drainage
To check the drainage
Drain piping
Forming the Piping
Air Purging
Air purging
Air purging with vacuum pump
Soap water method
Evacuation
Finishing the job
Evaluation of the performance
Prepare remote controller
Test Running
Settlement of outdoor unit
Pump Down
Pump Down Procedure
Functions
Stand by control at low temp
Power relay control
Active power filter controlPSC
Overheatng. ProtectionPower module
Cooling Down to 18C Heating Down to 16C Up to 30C
Cancel Sleep Mode, Timer on or Timer OFF
3, 4, 5, 6 Off Timer
High39C Low11C
Operation
LED display of indoor unit
LG Brand/OEM Brand
Control method
Protection of the evaporator pipe from frosting
Model Comp. Operating frequency
Cooling mode operation
Intake air Temp Setting Temp
Healthy Dehumidification mode operation
Heating mode operation
Operating freq. step of comp
Temp. differences Comp. Operating frequency
At beginning
Fuzzy mode operationOptionals
Intake air temp Setting temp Fan speed
Fuzzy operation for cooling
Fuzzy operation for dehumidification
Fuzzy operation for Heating
Chaos swing mode
Jet cool mode operation
Jet heat mode operation
Swing mode
Sleep timer operation
Sleep timer operation for cooling cycle
Sleep timer operation for heating cycle
Trial Operation
Indoor temp Operating Mode Setting temp
Auto restarting operation
Forced operation
Protection from DC Peak Current
Protection from total current control
Portection from overheating of compressor
Portection from overheating of power module
Defrosting control
AS-W096/126U0 Series
AS-W096/126U1 Series
Auto Cleaning
Auto ChangeoverOptional
Low Ambient
To remove the Grille from the Chassis
Disassembly
To remove the Control Box
To remove the Discharge Grille
To remove the Evaporator
To remove the Cross-Flow Fan
To remove the Motor Cover
Schematic Diagram
Electric Control Device
IndoorAS-W096U 0, AS-W126U 0 Series
OutdoorAS-W096Series, AS-W126Series
Indoor Unit AS-W096/126U0,1 Series
Wiring Diagram
AS-W126U0 Series
Outdoor Unit AS-W096U0 Series
Components Location
Indoor Main P.W.B Assembly DC Part
Display ASSEMBLYAS-W096/126U0,1 Series
Outdoor Main P.W.B Assembly AS-W096/126U0 Series
Model Adopted Electrion Expansion Valve
Troubleshooting Guide
Refrigeration Cycle Diagram
Model Capillary Tube
Oil trap should be installed per 5~7 meters
Pipe Length and the Elevation
Outdoor unit Indoor unit
Way Valve Liquid Side
Way, 3-way Valve
Purge the air from the system
Procedure
Air purging
Check for gas leakage
Pumping Down
Air purging of the charge hose
Set the 2-way valve to the closed position
Air purging
Re-installation
Mount the valve stem nuts and the service port nut
Re-air Purging
Gas leakage
Balance Refrigerant of the 3-way Valve
All amount of refrigerant leaked
Evacuation
Purge the air from the charge hose
Gas Charging
After Evacuation
Connect the charge hose to the charging cylinder
Trouble analysis
Cycle Parts
Self-diagnosis function
Diagnosis Procedure
Precaution in Service or Check
Electronic Parts
Procedure Specification Remedy
Product doesnt operate with the remote controller
Check Point Comp. on Comp. OFF
Compressor/Outdoor Fan are unable to drive
When indoor Fan does not operate
Trouble 5 When the horizontal louver does not operate
Heater does not operate at all
Indoor Outdoor
Outdoor Unit does not operate at all
DC Peak ErrorError Code ➅
Trouble 8-1When compressor does not operate normally
Communication error between Indoor and Outdoor Error Code ➄
Trouble 8-2When compressor does not oprate normally
CT Error Error Code ➆
Trouble 8-3When compressor does not oprate normally
CN-T/Block
Problem of missing the connector Indoor Main PCB Assy
Problem of missing the connector Outdoor Main PCB Assy
Connectors Condition Problem error mode
Indoor Unit
Exploded View
Outdoor Unit
Description
Replacement Parts List
Panel ASSY, Front SUB
No A20061Z October