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Related Manuals for LG AS-H096U*M0
Summary of Contents for LG AS-H096U*M0
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Page 1: Service Manual
LG Room Air Conditioner SERVICE MANUAL MODELS: AS-H096U*M0 AS-H126U*M0 AS-H126U*M1 AS-H096U*M3 AS-H126U*M3 CAUTION • BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. • ONLY FOR AUTHORIZED SERVICE PERSONNEL. -
Page 2: Table Of Contents
Air Conditioner Service Manual TABLE OF CONTENTS LG Model Name ...............................3 Safety Precautions............................4 Dimensions..............................8 Symbols used in this Manual........................8 Indoor Unit..............................8 Outdoor Unit...............................9 Product Specifications ..........................11 Installation ..............................12 Select the best Location ..........................12 Piping Length and Elevation........................13 Fixing Installation Plate ..........................14 Drill a Hole in the Wall ..........................14... -
Page 3: Lg Model Name
Nano Plasma F+(A/changeover)+A/clean+4way Nano Plasma F+(A/changeover)+A/clean+PTC Nano Plasma F+(A/changeover)+Autoclean+4way+PTC Nano Plasma F+(A/changeover)+A/clean+4way+Low A+PTC Negative ION+A/Clean (Nano)Plasma+Negative ION+A/Clean 4way+(Nano)Plasma F+Negative ION+Healthy dehumidification+A/Clean Nano Plasma F+4Way+(A/changeover)+A/clean+ Serial No. LG Model Development Serial No. * ARTCOOL COLOR Mirror Walnut White Gogh Blue Sisley Wood... -
Page 4: Safety Precautions
Safety Precautions 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. This symbol indicates the possibility of death or serious injury. - Page 5 Safety Precautions For installation, always con- Do not install the product on a Be sure the installation area tact the dealer or an defective installation stand. does not deteriorate with age. Authorized Service Center. • There is risk of fire, electric shock, •...
- Page 6 Safety Precautions Do not place a heater or other Do not allow water to run into Do not store of use flammable appliances near the power electric part. gas or combustibles near the cable. air conditioner. • There is risk of fire, failure of the •...
- Page 7 Safety Precautions Operation Use two or more people to lift Use a soft cloth to clean. Do Do not touch the metal parts of and transport the air condi- not use harsh detergents, sol- the product when removing the tioner vents, etc.
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Page 8: Dimensions
Dimensions Dimensions Symbols used in this Manual This symbol alerts you to the risk of electric shock. This symbol alerts you to hazards that may cause harm to the air conditioner. This symbol indicates special notes. NOTICE Indoor Unit Installation plate Model INDOOR UNIT Dimension... -
Page 9: Outdoor Unit
Dimensions Outdoor Unit Gas side (3-way valve) Liquid side (2-way valve) MODEL AS-H096U_Series unit Service Manual 9... - Page 10 Dimensions Gas side (3-way valve) Liquid side (2-way valve) MODEL AS-H126U_Series unit 10 Room Air Conditioner...
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Page 11: Product Specifications
sProduct Specifications Product Specifications Table-1 Model Name AS-H126U*M0 AS-H096U*M0 AS-H126U*M1 AS-H096U*M3 Item Unit AS-H126U*M3 Btu/h 9,550 12,000 Cooling Capacity 2,800 3.52 Btu/h 9,900 12,700 Heating Capacity 2,900 3.72 Moisture Removal Power Source Ø, V, Hz 1, 220-240, 50 1, 220-240, 50 Indoor Air Circulation /min... -
Page 12: Installation
Installation Installation Select the best Location Indoor unit 1. Do not have any heat or steam near the unit. 2. Select a place where there are no obstacles in front of the unit. More than 3. Make sure that condensation drainage can be conve- More than 10cm niently routed away. -
Page 13: Piping Length And Elevation
Installation Piping Length and Elevation Pipe Size Capacity Standard Additional Max. Max. Elevation B (m) Length A (m) (Btu/h) Length (m) Refrigerant (g/m) LIQUID 7k, 8k, 9k 3/8" 1/4" 4 or 7.5 11k, 12k, 14k 1/2" 1/4" 4 or 7.5 1/2"... -
Page 14: Fixing Installation Plate
Installation Fixing Installation Plate The wall you select should be strong and solid Installation Plate enough to prevent vibration 1. Mount the installation plate on the wall with type "A" screws. If mounting the unit on a con- crete wall, use anchor bolts. •... -
Page 15: Flaring Work
Installation Flaring Work Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure. Cut the pipes and the cable. 1. Use the piping kit accessory or the pipes purchased locally. -
Page 16: Connecting The Piping
Installation Check 1. Compare the flared work with the figure by. Smooth all round Inside is shiny without scratches 2. If a flared section is defective, cut it off and do flar- ing work again. = Improper flaring = Inclined Surface Cracked Uneven damaged... - Page 17 Installation 4. Indoor unit installation Hook the indoor unit onto the upper portion of the installation plate.(Engage the two hooks of the rear Connecting top of the indoor unit with the upper edge of the cable installation plate.) Ensure that the hooks are prop- erly seated on the installation plate by moving it left Drain hose and right.
- Page 18 Installation For left rear piping 1. Route the indoor tubing and the drain hose to the required piping hole position. 2. Insert the piping, drain hose, and the connecting Connecting cable cable into the piping hole. 3. Insert the connecting cable into the indoor unit. Drain pipe •...
- Page 19 Installation Wrap the insulation material around the connect- Plastic bands Insulation material ing portion. 1. Overlap the connection pipe heat insulation and the indoor unit pipe heat insulation material. Bind them together with vinyl tape so that there may be no gap.
- Page 20 Installation CAUTION: Installation Information For left piping. Follow the instruction below. Good case • Press on the upper side of clamp and unfold the tubing to downward slowly. Bad case • Following bending type from right to left may cause damage to the tubing. 20 Room Air Conditioner...
- Page 21 Installation Outdoor Align the center of the pipings and sufficiently tighten the flare nut by hand. Finally, tighten the flare nut with torque wrench until the wrench clicks. Outdoor unit Liquid side piping • When tightening the flare nut with torque wrench, (Smaller diameter) ensure the direction for tightening follows the arrow on the wrench.
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Page 22: Connecting The Cables To The Indoor Unit
Installation Connecting the Cables to the Indoor Unit. • Connect the cables to the indoor unit by connecting the wires to the terminals on the control board dividually according to the outdoor unit connection. (Ensure that the color of the wires of the outdoor unit and the terminal No. -
Page 23: Connecting The Cables To The Outdoor Unit
Installation Connecting the Cables to the Outdoor Unit 1. Remove the control cover from the unit by loos- Outdoor Unit ening the screw. Connect the wires to the terminals on the control Terminal block board individually. 2. Secure the cable onto the control board with the Over 5mm cord clamp. -
Page 24: Checking The Drainage
Installation Checking the Drainage Forming the Piping 1. Checking the drainage. 1. Form the piping by wrapping the connecting portion of the indoor unit with insulation materi- • Pour a glass of water on the evaporator. al and secure it with two kinds of vinyl tapes. •... -
Page 25: Air Purging
Installation Air Purging Air and moisture remaining in the refrigerant system • Do a leak test of all joints of the tubing(both indoor have undesirable effects as indicated below. and outdoor) and both gas and liquid side service valves. • Pressure in the system rises. Bubbles indicate a leak. - Page 26 Installation Soap water method Gas side (1) Remove the caps from the 2-way and 3-way valves. (2) Remove the service-port cap from the 3-way valve. (3) To open the 2-way valve turn the valve stem coun- Liquid side terclockwise approximately 90°, wait for about 2~3 3-way valve 3-way valve sec, and close it.
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Page 27: Test Running
Installation Test Running 1. Check that all tubing and wiring have been properly Intake temperature connected. 2. Check that the gas and liquid side service valves are Discharge air fully open. Prepare remote controller 1. Remove the battery cover Discharge by pulling it according to the temperature arrow direction. -
Page 28: Operation
Operation Operation Function of Controls DISPLAY 1) C/O Model (high quality LCD remote controller supplied) Operation Indicator • On while in appliance operation, off while in appliance pause Timer Indicator • On while in timer mode (on/off) and in sleep timer mode, off when timer mode is completed or canceled. Comp. -
Page 29: Defrost Control
Operation Healthy Dehumidification Mode • When the dehumidification operation input by the remote controller is received, the intake air temperature is detected and the setting temp is automatically set according to the intake air temperature. 26°C ≤ Intake Air Temp =>... - Page 30 Operation 26°C ≤ Intake Air Temp => 25°C 24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C 22°C ≤ Intake Air Temp<24°C => Intake Air Temp+0.5°C 18°C ≤ Intake Air Temp<22°C => Intake Air Temp Intake Air Temp<18°C => 18°C •...
- Page 31 Operation • At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp at that time. 26°C ≤ Intake Air Temp => 25°C 24°C ≤ Intake Air Temp<26°C => Intake Air Temp+1°C 22°C ≤...
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Page 32: Sleep Timer Operation
Operation Off-Timer <=> On-Timer Operation • When the set time is reached after the on/off time is input by the remote controller, the on/off-timer operation is carried out according to the set time. Sleep Timer Operation • When the sleep time is reached after <1,2,3,4,5,6,7,0(cancel) hr> is input by the remote controller while in appliance operation, the operation of the appliance stops. -
Page 33: Forced Operation
Operation Auto Restarting Operation • When the power is restored after a sudden power failure while in appliance operation, the mode before the power failure is kept on the memory and the appliance automatically operates in the mode on the memory. •... - Page 34 Operation Air Cleaner Operation • When an air cleaner function is selected during Air Conditioner operation - Plasma air cleaner function will be operated while in any operation mode with selecting the function. - The function is to be stopped while it is operating with selecting the function. •...
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Page 35: Display Function
Operation Display Function 1. Heating Model 2. Cooling Model Operation Indicator Operation Indicator • Cooling, Soft Dry, Fan, Heating • Cooling, Soft Dry, Fan Sleep Timer Indicator Sleep Timer Indicator • Sleep Mode • Sleep Mode Timer Indicator Timer Indicator •... -
Page 36: Remote Control Operations
Operation Remote Control Operations The controls will look like the following. 1. START/STOP BUTTON Operation starts when this button is pressed and Controls stops when the button is pressed again. 2. OPERATION MODE SELECTION BUTTON Used to select the operation mode. 3. -
Page 37: Disassembly
Disassembly Disassembly Indoor Unit WARNING: Disconnect the unit from power supply before making any checks. Be sure the power switch is set to "OFF" To remove the Grille from the Chassis. • Hold up Inlet Grille Horizentally. • To remove the Grille, pull the lower left and right side of the grille toward you (slightly tilted) and lift it straight upward. - Page 38 Disassembly 2. To remove the Control Box. • Remove securing screws. • Pull the control box out from the chassis careful- 3. To remove the Discharge Grille. • Unhook the discharge grille and pull the dis- charge grille out from the chassis carefully. 4.
- Page 39 Disassembly • Unhook the tab on the right inside of the chassis at the same time, slightly pull the evaporator toward you until the tab is clear of the slot. 5. To remove the Motor Cover • Remove 2 securing screw. •...
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Page 40: Schematic Diagram
Schematic Diagram Schematic Diagram Electric Control Device BZ FREQ 40 Room Air Conditioner... -
Page 41: Wiring Diagram
Schematic Diagram Wiring Diagram Indoor Unit (AS-H096U*M0/AS-H126U*M0) AS-H126U*M1 / AS-H126U*M3 /AS-H096U*M3 POWER MAIN PCB THERMISTOR TRIAC MOTOR DISPLAY STEP MOTOR SH-CAPA. STEP MOTOR OPTION FUSE AC250V/T2A H.V.B A/CL RY-COMP. OPTION RY-4WAY RY-FAN TERMINAL BLOCK CN-MAIN LIMIT S/W-1 FORCED CONNECTOR OPERATON PWB ASM LIMIT S/W-2 CN-STEP1... -
Page 42: Components Location
Schematic Diagram Components Location MAIN P.W.B ASSEMBLY (AC PART) • TOP VIEW • BOTTOM VIEW 42 Room Air Conditioner... - Page 43 Schematic Diagram DISPLAY ASSEMBLY Service Manual 43...
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Page 44: Troubleshooting Guide
Troubleshooting Guide Troubleshooting Guide Refrigeration Cycle Diagram (1) Cooling Only Models INDOOR UNIT OUTDOOR UNIT LIQUID SIDE CAPILLARY TUBE HEAT HEAT EXCHANGE EXCHANGE (EVAPORATOR) (CONDENSER) GAS SIDE COMPRESSOR (2) Cooling & Heating Models INDOOR UNIT OUTDOOR UNIT CHECK VALVE LIQUID SIDE (Heating Model only) 3-WAY VALVE CAPILLARY TUBE... -
Page 45: 2-Way, 3-Way Valve
Troubleshooting Guide 2-way, 3-way Valve 2-way Valve (Liquid Side) 3-way Valve (Gas Side) Valve cap Hexagonal wrench (4mm) Open position Flare nut Flare nut Closed position Open position Closed position piping piping Service Service connection connection port cap port To outdoor unit To outdoor unit Works Shaft position... -
Page 46: Pumping Down
Troubleshooting Guide Pumping Down Liquid side Indoor unit Outdoor unit Open 2-Way valve Gas side Closed 3-Way valve CLOSE CLOSE Purge the air • Procedure (6) Operate the air conditioner at the cooling (1) Confirm that both the 2-way and 3-way valves cycle and stop it when the gauge indicates are set to the open position. - Page 47 Troubleshooting Guide Balance Refrigerant of the 3-way Valve (Gas leakage) Liquid side Indoor unit Outdoor unit 3-Way valve Open Gas side 3-Way valve Open OPEN CLOSE • Procedure (1) Confirm that both the 2-way and 3-way valves (3) Open the valve (Lo side) on the charge set and are set to the back seat.
- Page 48 Troubleshooting Guide Evacuation (All amount of refrigerant leaked) Liquid side Indoor unit Outdoor unit 3-Way valve Open Gas side 3-Way valve Open Vacuum pump OPEN CLOSE • Procedure (1) Connect the vacuum pump to the center hose (3) Close the valve (Lo side) on the charge set, of charge set center hose turn off the vacuum pump, and confirm that the gauge needle does not move (approxima-...
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Page 49: Gas Charging
Troubleshooting Guide Gas Charging (After Evacuation) Liquid side Indoor unit Open Outdoor unit 3-Way valve Gas side Open 3-Way valve Check valve Charging cylinder OPEN CLOSE • Procedure (1) Connect the charge hose to the charging This is different from previous procedures. cylinder. -
Page 50: Cycle Parts
Troubleshooting Guide Cycle Parts Trouble analysis 1. Check temperature difference between intake and discharge air and operating current. Temp. difference : approx. 0°C • All amount of refrigerant leaked Current : less than 80% of out. Check refrigeration cycle. rated current Temp. -
Page 51: Electronic Parts
Troubleshooting Guide Electronic Parts Product does not operate at all. (* Refer to Electronic Control Device drawing and Schematic diagram.) Turn off Main Power (After 10 seconds) Turn on Main Power Does "beeping" sound is made from the Indoor Unit? Primarily, the operating condition of Micom is OK. - Page 52 Troubleshooting Guide The product does not operate with the remote controller. Turn on Main Power While the compressor has been stopped, the compressor does not operate owing to the delaying function for 3 minutes after stopped. When the compressor stopped Indoor Fan is driven by a low speed. At this point the wind speed is not controlled by the remote controller.
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Page 53: Compressor/Outdoor Fan Are Unable To Drive
Troubleshooting Guide Compressor/Outdoor Fan are unable to drive. Turn on Main Power Operate "Cooling Mode( )" by setting the desired temperature of the remote controller is less than one of the indoor temperature by 1°C at least. When in Air Circulation Mode, Compressor/Outdoor Fan is stopped. Check the sensor for indoor temperature is attached as close as to be effected by the temperature of Heat Exchanger(EVA). -
Page 54: When Indoor Fan Does Not Operate
Troubleshooting Guide When Indoor Fan does not operate. Turn off Main power Check the connection of CN-MOTOR1, 2 Check the Fan Motor Check the Fuse(AC250V/3.15A) - Check PWM signal from Micom Pin 50 - Check On/Off signal from micom pin14. - Check Voltage of CN-Motor 1, 2 (pin is about 15V) - Page 55 Troubleshooting Guide When Louvers do not operate. • Confirm that the Louver is normally geared with the shaft of Stepping Motor. • If the regular torque is detected when rotating the Louver with hands Normal • Check the connecting condition of CN-UD, LR1, LR2 Connector. •...
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Page 56: When Heating Does Not Operate
Troubleshooting Guide When Heating does not operate Turn ON Main Power Operate “Heating Mode( )” by setting the desired temperature of the remote control is higher than one of the indoor temperature by 2°C at least. In heating Mode, the indoor fan operates in case the pipe temperature is higher than 28°C. - Page 57 Troubleshooting Guide Turn off Main Power • Check the electrical wiring diagram of outdoor side. • Check the abnormal condition for the component of Compressor/Outdoor Fan Motor, 4 way. • Check the "open" or "short" of connecting wires between indoor and outdoor.
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Page 58: Exploded View
Exploded View Exploded View Indoor Unit 135316 146811-2 152313 152302 268711-4 135080-1 146811-2 145200 268711-4 135313 268711-1 W3300 135080-2 267110 359011 342800 159830 131410 354210 249951 352150 346810 266090 135516 35211B 268711-2 146811-1 567480 147581 135311 58 Room Air Conditioner... - Page 59 Exploded View Outdoor Unit 437211 237205 554031 435301 435511 546810 559010 649950 552201 552111 552116 552202 567502 561410 554160 447910 550140 552203-1 430411 552203-2 Service Manual 59...
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Page 60: Replacement Parts List
Replacement Parts List Replacement Parts List Indoor Unit PART No. LOCATION AS-H126U*M1 DESCRIPTION REMARKS ASNH096U*M3 AS-H096U*M0 AS-H126U*M0 ASNH126U*M3 (AS-H096U*M3) (AS-H126U*M3) 131410 CHASSIS ASSEMBLY 3141A20007B 3141A20007B 3141A20007B 3141A20007B 135080-1 DECORATION(TOP) 3508A20034E 3508A20034E 3508A20034E 3508A20034E 135080-2 DECORATION(BOTTOM) 3508A20034F 3508A20034F 3508A20034F 3508A20034F 135311 GRILLE ASSEMBLY,DISCHARGE(INDOOR) 3531A10137B 3531A10137B 3531A10137B 3531A10137B... - Page 61 Replacement Parts List Outdoor Unit PART No. LOCATION DESCRIPTION REMARKS AS-H126U*M1 ASNH096U*M3 AS-H096U*M0 AS-H126U*M0 ASNH126U*M3 (AS-H096U*M3) (AS-H126U*M3) 430410 BASE ASSEMBLY,OUTDOOR 3041A20079A 3041A20008K 3041A20008K 3041A20079A 435301 GRILLE,DISCHARGE 3530A10059H 3530A20006G 3530A20006G 3530A10059H 435511 COVER ASSEMBLY,CONTROL(OUTDOOR) 3551A30023Q 3551A30023E 3551A30023W 3551A30023Q 437210 PANEL ASSEMBLY,FRONT(OUTDOOR) 3720A10171A 3721A20027P 3721A20027T...
- Page 62 Memo 62 Room Air Conditioner...
- Page 63 P/No.: 3828A20195T Printed in Korea...