LG LM-1830H2L Svc Manual
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LG LM-1830H2L Svc Manual

LG LM-1830H2L Svc Manual

Multi air conditioner
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Multi Air Conditioner
SVC MANUAL(Exploded View)
MODEL : LM-1830C2L/M/N
LM-1830H2L/M/N
LM-2430C2L/M/N
LM-2430H2L/M
L2-C243AL1
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.
Internal Use Only
http://biz.lgservice.com

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Summary of Contents for LG LM-1830H2L

  • Page 1 Internal Use Only http://biz.lgservice.com Multi Air Conditioner SVC MANUAL(Exploded View) MODEL : LM-1830C2L/M/N LM-1830H2L/M/N LM-2430C2L/M/N LM-2430H2L/M L2-C243AL1 CAUTION Before Servicing the unit, read the safety precautions in General SVC manual. Only for authorized service personnel.

  • Page 2: Table Of Contents

    Cycle Troubleshooting Guide ....................43 Electronic Parts Troubleshooting Guide.................. 45 Electronic Control Device ......................52 Schematic Diagram........................55 Exploded View..........................57 - 2 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 3: Functions

    • The louver can be set at the desired position or swing up and down automatically. • Intermittent operation of fan at low speed. - 3 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 4 ˚C To ˚F Swtiching Button ˚C / ˚F Fan Operation Mode : Fan Operates without cooling or heating. Reset - 4 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 5: Product Specifications

    9.52(3/8") Refrigerant(R-22) – at 7.5m Airflow Direction Control(Up & Down) Remote Controller Type L.C.D Wireless Sleeping Operation Drain Hose - 5 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 6 9.52(3/8") Refrigerant(R-22) – at 7.5m Airflow Direction Control(Up & Down) Remote Controller Type L.C.D Wireless Sleeping Operation Drain Hose - 6 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 7 12.7(1/2") Refrigerant(R-22) – at 7.5m Airflow Direction Control(Up & Down) Remote Controller Type L.C.D Wireless Sleeping Operation Drain Hose - 7 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 8 12.7(1/2) Refrigerant(R-22) – at 7.5m Airflow Direction Control(Up & Down) Remote Controller Type L.C.D Wireless Sleeping Operation Drain Hose - 8 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 9: Dimensions

    ( LM-2430C2L/M, LM-2430H2L/M ) MODEL LM-1830C2L/M, LM-1830H2L/M LM-2430C2L/M, LM-2430H2L/M Hanger Hole Pipe Hole Fix Hole Capacity SP1 Ch. 9K/12K - 9 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 10 2. Outdoor Unit Gas side 3-Way valve Liquid side 2-Way valve MODEL LM-1830C2L/M, LM-1830H2L/M, LM-2430C2L/M, LM-2430H2L/M,L2-C243AL1 76.5 - 10 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 11: Refrigeration Cycle Diagram

    CAPILLARY TUBE 2-WAY VALVE HEAT HEAT EXCHANGER EXCHANGER (EVAPORATOR) (CONDENSER) A-UNIT B-UNIT COMPRESSOR GAS SIDE 3-WAY VALVE COMPRESSOR 2. LM-1830H2L/M, LM-2430H2L/M (Cooling & Heating modes) Indoor Unit Outdoor Unit COOLING HEATING COMPRESSOR-A DEICE 4-WAY VALVE 3-WAY COMPRESSOR-B HEAT VALVE EXCHANGER...

  • Page 12: Wiring Diagram

    Wiring Diagram 1. INDOOR UNIT: LM-1830C2L/M, LM-1830H2L/M, LM-2430C2L/M, LM-2430H2L/M FORCED OPERATION AUTO RESTART REMOTE CONTROL MOTOR THERMISTOR STEP MOTOR MAIN PCB ASSY CN-DISP1 DISPLAY PCB ASSY PILLAR TERMINAL INDOOR WIRING DIAGRAM TO OUTDOOR UNIT 3854A20075M 2. OUTDOOR UNIT • LM-1830C2L/M •...

  • Page 13: Operation Details

    ➲ Intake Air Temp-1°C 18°C ≤ Intake Intake Air Temp<24°C ➲ Intake Air Temp-0.5°C ➲ 18°C Intake Air Temp<18°C - 13 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 14 • Outdoor fan is OFF if pipe temperature is over 6.5°C and outdoor fan is ON if pipe temperature is below 0°C. • Outdoor fan is off if any one part is heating overload condition. - 14 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15 • While in Fuzzy operation, the airflow speed of the indoor fan is automatically selected according to the tem- perature. - 15 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 16 • The timer LED is on when the on-timer is input. It is off when the time set by the timer is reached. • If the appliance is operating at the time set by the timer, the operation continues. - 16 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 17 • When the Jet Cool key is input, the upper/lower vanes are reset to those of the initial cooling mode and then operated in order that the air outflow could reach further. - 17 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 18 • 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. - 18 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 19 "beep-beep-beep-beep-beep-" is made 10 times to indicate that the remote control signal cannot be received. - 19 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 20: Display Function

    • Poor communication line/circuit check 3sec • Check indoor fan • Indoor fan lock motor and outdoor PCB ass'y - 20 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 21: Installation

    3. Piping length and the elevation Indoor unit Pipe Size Max. Max. piping Elevation length LIQUID B (m) A (m) 1/2"(3/8") 1/4" Outdoor unit - 21 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 22 80mm door side. 50mm ø70mm ø70mm LM-2430C2L/M, LM-2430H2L/M Left rear piping Right rear piping ø70mm ø70mm Wall Indoor Outdoor - 22 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 23 Since the flare part comes into contact with the connec- tors, carefully check the flare finish. - 23 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 24 Locating at the upper side can be a reason that drain water overflows drain pan inside the unit. Gas side piping Connecting Liquid side piping cable Drain hose - 24 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 25 Wrap the insulation material around the connecting portion. - 25 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 26 Press the lower left and right side of the unit against the Installation Plate until the hooks engages with their slots (sound click). - 26 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 27 1.8kg . m Liquid Side (1/4") 4.2kg . m Gas Side (3/8") 5.5kg . m Gas Side (1/2") Torque wrench - 27 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 28 • Every wire must be connected firmly. • No wire should be allowed to touch refrigerant tubing, the compressor or any moving parts. - 28 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 29 (4) Position the round terminal wire, and replace and tighten the terminal screw using a screwdriver. Connecting cable - 29 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 30 • Press the Grille toward the chassis until it will be back into place. - 30 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 31 Tip of drain hose Less than dipped in water 50mm gap Water Water Water Waving leakage Ditch leakage leakage - 31 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 32 7. Tighten the valve stem nuts of the 2-way valve and 3-way valve. Liquid side Indoor unit Outdoor unit Closed 2-way valve Gas side 3-way valve Closed Vacuum pump OPEN CLOSE - 32 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 33 ** A, B mean indoor unit higher located than outdoor unit. C, D mean outdoor unit higher located than indoor unit. - 33 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 34 2. Ensure the difference between the intake temperature and the discharge one is more than 8°C. Discharge air - 34 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 35: Operation

    CHAOS SWING BUTTON Used to stop or start louver movement and set the desired up/down airflow direction. - 35 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 36 Used to check the room temperature. ˚C TO ˚F SWITCHING BUTTON RESET BUTTON Used prior to resetting time or after replacing batteries. - 36 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 37: Disassembly Of The Parts (Indoor Unit)

    1. To remove the sensor, housing connect, step motor conductor with sensor holder, Motor, Evaporator & P.C.B. Motor Conductor Sensor Conductor Step Motor Conductor - 37 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 38 • Remove the left end of the cross-flow fan from the self-aligning bearing. - 38 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 39: 2-Way, 3-Way Valve

    Pressure check Open Open Open (Servicing) (with charging cylinder) Gas releasing Open Open Open (Servicing) (with charging cylinder) - 39 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 40 - Open the Low-handle valve on the gauge slightly to air purge from the hose. 5. Set the liquid side valve to the closed position. - 40 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 41 5 minutes after turning off the vacuum pump). - 41 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 42 6. Apply steps from 1 to 5 to each unit (A-unit, B- repeat the procedure(pumping down-pin). unit) by the same method. - 42 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 43: Cycle Troubleshooting Guide

    Insufficient amount of Current is low. Lower Higher refrigerant(Leakage) Clogging Current is low. - 43 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 44 If overload Max. capacity, display error code in indoor unit. Max. capacity Outdoor Max capacity 14k combination 19kcombination 23k combination 33k combination - 44 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 45: Electronic Parts Troubleshooting Guide

    • Voltage of Micom No. 2, • IC01A(KIA7036, Reset IC) (DC +4.5V over) and Soldering condition. • Replace faulty parts X01(8MHz) - 45 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 46 ) - R17(2Ω) - IR LED - Q1 - • Check the connecting circuit between PIN R16(2.2KΩ). R01L(1K) - C01L(680PF) - MICOM PIN • Check Receiver Ass'y - 46 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 47 Check if connection line (Indoor/Outdoor) is complied with Wiring Diagram. Good connection Bad connection Check Outdoor Unit Correct connection line (PCB Ass'y) - 47 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 48 Check POLY S/W in indoor PCB Ass'y If it is opened If it is shorted Exchange Indoor PCB Ass'y Check the outdoor PCB Ass'y - 48 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 49 • Confirm the assembly conditions that are catching and interfering parts in the rotation radial of the Vertical Louver - 49 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 50 Check if connection line (Indoor/Outdoor) is complied with Wiring Diagram. Good connection Bad connection Check Outdoor Unit Correct connection line (PCB Ass'y) - 50 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 51 LED on display and indoor fan, outdoor fan, COMP are not operated. • The unit can be reoperated by On/Off control of Remocon. - 51 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 52: Electronic Control Device

    Electronic Control Device 1. Indoor • MAIN P.C.B ASM - 52 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 53 2. Outdoor • MAIN P.C.B ASM - 53 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 54 3. Display Ass'y - 54 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 55: Schematic Diagram

    Schematic Diagram 1. Indoor - 55 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 56 2. Outdoor - 56 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 57: Exploded View

    Exploded View and Replacement Parts List 1. Indoor Unit (LM-1830C2M, LM-1830H2L/M) - 57 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 58 2. Indoor Unit (LM-1830C2L) - 58 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 59 3. Indoor Unit (LM-2430C2L/M, LM-2430H2L/M) - 59 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 60 4. Indoor Unit (L2-C243AL1) - 60 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 61 5. Outdoor Unit (LM-1830C2L/M, LM-2430C2L/M, L2-C243AL1) - 61 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 62 6. Outdoor Unit (LM-1830H2L/M, LM-2430H2L/M) - 62 - Copyright ©2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 63 September, 2008 P/NO : 3828A20097A...

This manual is also suitable for:

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