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LG AS-H246DGM0 Manual

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Room Air Conditioner

SVC MANUAL(Exploded View)
MODEL : AS-H246DGM0 (S24AHP-ND9/UD6)
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.

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Summary of Contents for LG AS-H246DGM0

  • Page 1: Room Air Conditioner

    Internal Use Only http://biz.lgservice.com Room Air Conditioner SVC MANUAL(Exploded View) MODEL : AS-H246DGM0 (S24AHP-ND9/UD6) CAUTION Before Servicing the unit, read the safety precautions in General SVC manual. Only for authorized service personnel.

  • Page 2: Table Of Contents

    Components Location ..........................37 Troubleshooting Guide ..........................39 Refrigeration Cycle Diagram ........................39 2-way, 3-way Valve ..........................40 Cycle Parts...............................46 Electronic Parts ............................47 Exploded View...............................54 - 2 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 3: Lg Model Name

    Nano Plasma F+4Way+(A/changeove)+A/clean+ Serial No. LG Model De velopment Serial No. * ARTCOOL COLOR Mirror White Blue Wood Metal Cherry - 3 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 4 Wire remocon Serial No. LG Model De velopment Serial No. * ARTCOOL COLOR Mirror White Blue Wood Metal Cherry - 4 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 5: Safety Precautions

    .Do not modify or extend the power cord. securely. • There is risk of fire of electric shock. • No grounding may cause electric shock. - 5 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 6 • If the base collapses, the air conditioner could fall product. with it, causing property damage, product failure, and personal injury. - 6 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 • There is risk of fire, failure of the product, or electric • There is risk of fire or failure of product. shock. - 7 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 8 Use two or more people to lift and transport the air conditioner. • To avoid vibration or water leakage. • Avoid personal injury. 90˚ - 8 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 9 • There is risk of personal injury and failure of product. • There are sharp and moving parts that could cause personal injury. - 9 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 10: Dimensions

    This symbol alerts you to hazards that could cause harm to the air conditioner. NOTICE This symbol indicates special notes. Indoor Unit Installation plate Model 24k Btu Dimension 1209 - 10 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 11 Dimensions • 24K Series Gas side 3-way valve Liquid side 3-way valve MODEL 24k Btu 76.4 - 11 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 12: Product Specifications

    3/8"(9.52) Liquid Service Valve inch(mm) 5/8"(15.88) Sleeping Operation Drain Hose 1.5mm x 3, 0.75mm Connecting Cable 2.5mm Power Cord - 12 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 13: Installation

    • Oil trap should be installed every 5~7 meters. More than 60cm More than 30cm More than 30cm More More than 70cm than 60cm - 13 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 14: How To Fix Installation Plate

    Left rear piping Right rear piping Distance (mm) CHASSIS (Grade) SD(24k) Adhesive Only the Connecting desired direction part Drain hose - 14 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 15: Flaring Work And Connection Of Piping

    Yoke ing and drain hose, especially power Cone cord and connecting cable. Copper pipe Clamp handle Red arrow mark - 15 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 16: For Right Rear Piping

    Press the lower left and right sides of the unit against the Pipe installation plate until the hooks engage into their slots(click- Vinyl tape(narrow) ing sound). - 16 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 17: For Left Rear Piping

    • Insert the spacer etc. between the indoor unit and the installation plate and separate the bottom of the indoor unit from the wall. Indoor unit Spacer Installation plate - 17 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 18 • Bend the tubing to the left side of chassis. Tubing holder - 18 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 19: Connection Of The Pipes-Outdoor

    Ø6.35 Ø9.52 Ø12.7 Ø15.88 Ø19.05 Outdoor unit Gas side piping (Bigger diameter) Liquid side piping (Smaller diameter) Torque wrench - 19 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 20: Connecting The Cable Between Indoor Unit And Outdoor Unit

    -SECTIONAL -SECTIONAL AREA delay fuse. 0.75 0.75 0.75 AREA Cable Type(B) H07RN-F H07RN-F H07RN-F H07RN-F Cable Type(B) H07RN-F H07RN-F - 20 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 21: Connect The Cable To The Outdoor Unit

    9) The means for disconnection from a power supply shall be incorporated in the fixed wiring and have an air gap contact separation of at least 3mm in each active(phase) conductors. - 21 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 22: Checking The Drainage And Forming The Pipings

    Tip of drain hose Less than dipped in water Trap 50mm gap Water Water Water Waving leakage leakage leakage Ditch - 22 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 23: Air Purging

    Usually, the cylinder is used in a vertical standing position. - 23 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 24 This completes air purging with a vacuum pump. The air conditioner is now ready to test run. Vacuum pump - 24 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 25: Test Running

    The pressure of the gas side Refrigerant TEMP. service valve. R-22 35°C (95°F) 4~5kg/cm G(56.8~71.0 P.S.I.G.) R-410A 35°C (95°F) 8.5~9.5kg/cm G(120~135 P.S.I.G.) ON/OFF button - 25 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 26: Operation

    24°C ≤ Intake Air Temp<26°C ➲ Intake Air Temp-1°C 18°C ≤ Intake Air Temp<24°C ➲ Intake Air Temp-0.5°C ➲ 18°C Intake Air Temp<18°C - 26 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 27: Defrost Control

    • While in defrost control, the compressor is on and the indoor fan, the outdoor fan, and the 4 way valve are off. - 27 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 28: Sleep Timer Operation

    • While in forced operation, the key input by the remote control has no effect and the buzzer sounds 10 times to indicate the forced operation. - 28 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 29: Test Operation

    • When the appliance-operation key is input by the remote control, the short "beep-beep-" sounds. • When the appliance-pause key is input by the remote control, the long "beep—" sounds. - 29 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 30: Display Function

    • Indoor room temperature • Indoor Thermistor (once) thermistor open/short assembly check • Indoor pipe temperature thermistor open/short. 3sec 3sec 3sec - 30 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 31: Remote Control Operations

    Used prior to using modes printed in blue at the bottom of buttons. 17. AUTO CLEAN (OPTIONAL) Used to set Auto Clean mode. - 31 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 32: Disassembly

    1. Before removing the control box, be sure to take out the wire screwed at the other end. Earth Conductor - 32 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 33 2EA in the Eva Holder, at the right 2EA). • When repair, do not damage the Caution label. - 33 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 34 Cross-flow fan • Remove the left end of the cross-flow fan from the self-aligning bearing. - 34 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 35: Schematic Diagram

    Schematic Diagram Schematic Diagram Electric Control Device • Heating & Cooling Models - 35 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 36: Wiring Diagram

    Schematic Diagram Wiring Diagram • AS-H246D SERIES Heat Pump Model Indoor Unit Outdoor Unit - 36 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 37: Components Location

    Schematic Diagram Components Location MAIN P.W.B ASSEMBLY • TOP VIEW • BOTTOM VIEW - 37 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 38 Schematic Diagram DISPLAY ASSEMBLY – 6871A20681 - 38 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 39: Troubleshooting Guide

    HEAT EXCHANGE EXCHANGE (EVAPORATOR) (CONDENSER) GAS SIDE REVERSING 3-WAY VALVE ACCUMU VALVE LATOR (Heating Model Only) COOLING COMPRESSOR HEATING - 39 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 40: 2-Way, 3-Way Valve

    Open Pressure check (with charging cylinder) Open Open (Servicing) Open Gas releasing (with charging cylinder) Open Open (Servicing) - 40 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 41: Pumping Down

    R-22. Thus, the high pressure side gauge of charge set should be used higher pressure gauge of 50kg/cm2 range. - 41 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 42 – Discharge the refrigerant gradually; if it is dis- charged too suddenly, the refrigeration oil will also be discharged. - 42 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 43 If the vacuum pump oil becomes dirty or depleted, replenish as needed. Use vacuum pump equipped with check value applied to be prevented from flowing backward. - 43 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 44: Gas Charging

    1 minute and then Pay attention not to charge other refrigerant. repeat the procedure (pumping down-pin). - 44 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 45 P = 3 + 0.0123 x T + 0.8 x T . g) Where, P : Suction Pressure(kg/cm Tout : Outdoor Temperature(˚C) : Indoor Temperature(˚C) - 45 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 46: Cycle Parts

    2. The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with putty. - 46 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 47: Electronic Parts

    • IC01A(KIA7036, Reset IC) • Voltage of IC No.1, • Replace faulty parts OSC01B(8MHz) (DC +4.5V over) and Soldering condition. - 47 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 48: The Product Is Not Operate With The Remote Controller

    Check point • Check the connecting circuit between CN-DIS1 - R11L(100Ω) - C01A(100nF) - MICOM PIN • Check Receiver Assembly - 48 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 49: Compressor/Outdoor Fan Are Unable To Drive

    • Check the abnormal condition for the component of Compressor/Outdoor Fan Motor. • Check the "open" or "short" of conmecting wires between indoor and outdoor. - 49 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 50: When Indoor Fan Does Not Operate

    The voltage of PIN NO 1(orange) and 3(yellow) of CN-MOTOR. About AC 180V over About AC 50V over TRIAC is not damaged TRIAC Check - 50 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 51: When Vertical Louver Does Not Operate

    • Confirm the assembly conditions that are catching and interfering parts in the rotation radial of the Vertical Louver - 51 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 52: When Heating Does Not Operate

    Between Micom DC 5V DC 0V (NO.51) and GND Between IC02M Below DC 1V About DC 12V (NO.11) and GND - 52 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 53 • 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. - 53 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 54: Exploded View

    249951 352115 346810 Part for Plasma Model 146811B 135516 145200A 352116 268711A 352150 147581A 146811A 145200B 145200C W0CZZ 147581B - 54 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 55 435511 349600 435301 W0CZZ-1 W0CZZ-2 W0CZZ-2 546810 668713 559010 649950 552202 447910 554160 561410 552116 550140 552203-2 403410 552203-1 - 55 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 56 January, 2008 P/NO : 3828A20926G...

This manual is also suitable for:

S24ahp-nd9S24ahp-ud9

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