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LG LBNK3660BL Service Manual
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LG LBNK3660BL Service Manual

LG LBNK3660BL Service Manual

Ceiling duct air conditioner
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Ceiling Duct Air Conditioner
SVC MANUAL(Exploded View)
MODEL : LBNS3061BL
LBNS3062BL
LBNK3660BL
LBNK3661BL
LBNK4261BL
LBNK4881BL
LBNK4882BL
LBNH608RSS1
LBNM7280BL
LBNM9080BL
LBNM1081BL
CAUTION
Before Servicing the unit, read the safety precautions in General SVC manual.
Only for authorized service personnel.
http://biz.lgservice.com
LBUS3061BL
LBUS3062BL
LBUK3660BL
LBUK3662BL
LBUK4882BL
LBUM7280BL
LBUM9080BL
LBUM1081BL
LBNM7281BL
LBNM9081BL
Internal Use Only

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  • Page 1 Internal Use Only http://biz.lgservice.com Ceiling Duct Air Conditioner SVC MANUAL(Exploded View) MODEL : LBNS3061BL LBUS3061BL LBNS3062BL LBUS3062BL LBNK3660BL LBUK3660BL LBNK3661BL LBUK3662BL LBNK4261BL LBUK4882BL LBNK4881BL LBUM7280BL LBNK4882BL LBUM9080BL LBNH608RSS1 LBUM1081BL LBNM7280BL LBNM7281BL LBNM9080BL LBNM9081BL LBNM1081BL CAUTION Before Servicing the unit, read the safety precautions in General SVC manual.

  • Page 2: Table Of Contents

    Installation of Indoor, Outdoor Unit ..................22 Cycle ............................36 Cycle Troubleshooting Guide ....................39 Electronic Parts Troubleshooting Guide ................40 Electronic Control Device .....................43 Exploded View ........................44 - 2 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 3: Functions

    • It operates maximum 16 units by only one wired remote con- troller and each unit starts random to prevent overcurrent. Radio Frequency Control (Optional) - 3 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 4: Remote Controller

    Fan Operation Mode :Fan operates without cooling & heating :Used to control the indoor air flow when the comp is off. Fan Auto Function ( )AUTO –4– Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 5: Product Specifications (Cooling & Heating)

    Dimension Indoor 890*350*560 1,030*350*435 1,030*350*435 1,030*350*435 Outdoor (W x H x D) 870*800*320 870*800*320 900*1,220*370 900*1,220*370 Indoor Weight Outdoor - 5 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 6 3/8(9.52) (mm) 5/8(15.88) 5/8(15.88) 3/4(19.05) 3/4(19.05) Dimension Indoor 1,030*350*435 1,030*350*435 1,030*350*435 1,120*400*575 Outdoor (W x H x D) 870*800*320 870*800*320 900*1,220*370 900*1,220*370 Indoor Weight Outdoor –6– Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 7 5/8(15.88) (mm) 3/4(19.05) 1(25.4) 9/8(28.0) 9/8(28.0) Dimension Indoor 1,230*400*590 1,420*400*575 1,596*450*658 1,596*450*658 Outdoor (W x H x D) 900*1,220*370 1,245*930*650 1,245*930*650 1,245*930*650 Indoor Weight Outdoor –7– Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 8: Dimensions

    "A" "B" "C" "D" "E" "F" "G" "J" "K" "L" "M" "N" "P" "Q" "R" "S" "T" "V" "W" "X" "Y" MODEL NO LBNM7281BL 1415 1221 1327 1327 1351 LBNM9081BL 1596 1403 1504 1504 1532 1596 1403 1504 1504 1532 LBNM1081BL –8– Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 9 1358 400 652 294 1004 303 1093 215 LBNH608RSS1 276 242 172 177 1270 1281 1475 31 221 1230 590 - 9 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 10: Outdoor Unit

    (Unit: mm) Model No. TYPE LBUS3061BL/LBUS3062BL LBUK3660BL LBUK4260BL 1220 LBUK4880BL/LBUK4882BL 1220 LBUH608RSS1 1220 LBUM7280BL 1,245 LBUM9080BL 1,245 LBUM1081BL 1,245 - 10 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 11: Refrigeration Cycle Diagram

    • If 60K Model is installed at a distance of 15m, 525g of refrigerant should be added (15-7.5) x 70g = 525g - 11 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 12: Wiring Diagram

    RUN CAPACITOR FOR CM COMPRESSOR RUN CAPACITOR FOR FMo 20SV OUTDOOR FAN MOTOR FUSE (250V, 5A) GN/YL DEICER PCB CRANK CASE HEATER FOR CM START CAPACITOR FOR CM –12– Copyright ©2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 13: Outdoor Unit Wiring Diagram

    20SV OUTDOOR FAN MOTOR FUSE (250V, 5A) GN/YL DEICER PCB CRANK CASE HEATER FOR CM START CAPACITOR FOR CM - 13 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 14 3 PHASE DETECTOR 49FMo INTERNAL T.P FOR FMo START CAPACITOR FOR FMo RUN CAPACITOR FOR FMo 5 SEC. DELAY TIMER - 14 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15 FUSE (250V,10A) 20SV REVERSING COIL DEICER PCB TERMINAL BLOCK COMPRESSOR 3.D.P 3 PHASE DETECTOR SOLENOID VALVE P/NO : 3854A20021Z - 15 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 16 Model : LB-H608RSS1 1. Indoor 2. Outdoor - 16 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 17 MAIN TERMINAL BLOCK 3.P.D 3 PHASE DETECTOR 49FMo INTERNAL T.P FOR FMo 20SV 4-WAY VALVE COIL TERMINAL BLOCK FOR CONNECTING - 17 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 18 3 PHASE DETECTOR 49FMo INTERNAL T.P FOR FMo 20SV REVERSING COIL TERMINAL BLOCK FOR CONNECTING 5 SEC. DELAY TIMER - 18 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 19: Operation Details

    More than More than 3 minutes 3 minutes Selecting Selecting Selecting INDOOR FAN fan speed fan speed fan speed COMPRESSOR - 19 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 20 • The operation diagram is as following. PIPING 1min TEMPERATURE 31°C 28°C INDOOR FAN COMPRESSOR : Selected Fan : Low Fan : Fan Stop - 20 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 21: Defrost Control

    Indoor piping thermistor error CH 03 Indoor main body / Remote controller unit communication error CH 04(Optional) Water level float switch error - 21 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 22: Installation Of Indoor, Outdoor Unit

    3/4'' 3/8" Outdoor unit 60K BTU/h 3/4'' 3/8" 72K BTU/h 1/2" 90K BTU/h 9/8'' 5/8" 100K BTU/h 9/8'' 5/8" - 22 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 23: Ceiling Dimension And Hanging

    4. Avoid places where sulfurous acid gas or corrosive gas is generated. TYPE-B (Using Galvanized steel strap) 5. Avoid places near high frequency generators. - 23 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 24: Remote Controller Installation

    The maximum length of the cord is 100m. If the length of the cord exceeds 50m, use a wire size greater than 0.5mm - 24 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 25 Re-attach the cover. • Slide it back into position. - 25 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 26: Connecting Cables Between Indoor Unit And Outdoor Unit

    4) In Australia, the length of power supply cord measured from the entry of the power supply cord to the middle of live pin on the power plug should be over 1.8m. - 26 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 27: Indoor Unit

    Cover control ed in the control box and do earthing. Please check !! - 27 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 28: Connecting Pipes To The Indoor Unit

    I If flare is noted to be defective, cut off the flared section and do flaring work again. Inclined Surface Cracked Uneven damaged thickness Even length all round - 28 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 29: Piping Connection

    1.8kg . m Ø6.35mm 4.0kg . m Ø9.52mm 5.5kg . m Ø12.7mm 6.6kg . m Ø15.88mm 6.6kg . m Ø19.05mm - 29 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 30 A ≥ 70mm a water leakage caused by the blocking B ≥ 40mm C ≥ 20mm of intake air filter. - 30 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 31: Refrigerant Pipe

    REFRIGERANT PIPE Tape • Insulate and tape both the gas piping and liquid piping. Liquid pipe Gas pipe Thermal insulator - 31 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 32: Test Running

    M4...118N . cm{12kgf . cm} M5...196N . cm{20kgf . cm} M6...245N . cm{25kgf . cm} M8...588N . cm{60kgf . cm} - 32 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 33 • Vibration of a magnetic switch, damage on the contact point there of, fuse breaking, disturbance to the normal function of a overload protection device. • Proper starting power is not given to the compressor. - 33 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 34: Optional Operation

    • To control the room temperature by a wired remote controller, install controller(room temp. sensor) to sense the temperature more accurately. • Maunfactured in the position 1. - 34 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 35: Wiring Design

    • The maximum length of connecting wire should be below 200m(25Ω) on connecting each units. • Use a wire more than 0.5mm - 35 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 36: Cycle

    (9) Open the liquid side completely first and then the pipe connection is ok or not. gas side fully in order. - 36 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 37 (5) After the needle of gage indicates below 0 kgf/cm , close the valve of gas side quickly and turn off the power. - 37 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 38: Gas Charging

    1 minute and then repeat the procedure. - 38 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 39: Cycle Troubleshooting Guide

    2. The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with putty. - 39 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 40: Electronic Parts Troubleshooting Guide

    Exchange IC03D. of IC03D DC5V? Check the Is the PIN 49,58 of 5V P.C.B pattern. MICOM. DC5V? Exchange MICOM. - 40 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 41 Adjust set temperature. set all right? Is IC01M operated Change IC01M. normally? Is 4way-valve operated? Check RY-4Way. Check the connector. (CN-OUT) - 41 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 42 Check the wired Remocon Is the pin 39, 40 of PCB and DC 12V pattern. Micom DC 5V? Change the wired Remocon. - 42 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 43: Electronic Control Device

    Electronic control device I MAIN P.C.B ASM - 43 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 44: Exploded View

    237204D 137211A 359012 346810 330870 W3001A 237204B 137211B 354212 267110A 237201 W6640 268714 237204C 237204A W3300 249941A 249941B 237200 - 44 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 45 137211A 359012 346810 330870 W3001A W3001B 354212 137211B 267110A 237204B 237201 268714 W6640 237204C 237204A W3300 249941A 237200 249941B - 45 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 46 237203 237204D 137211A 359012 346810 330870 W3001 237201 354212 137211B 237204B 267110 W6640 268714 W3300 237204A 249941A 237200 249941B - 46 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 47 137211 263230 263230 W3001A 359012 267110 354212 268714 W3001B 237204B 349781 W6640 237204D 237201 237204A W3300 249941B 249941A 237200 - 47 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 48 137213A 336610A 336610B 137214 W0CZZ W3001 147901 263230A 263230B 267110 354210 137213B 249951 268714 437213A 552111 352118 330870 437213B - 48 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 49 330870 237204D 137211 263230 W3001A 359012 267110 354212 268714 W3001B 237204B W6640 237204C 237201 237204A W3300 249941B 249941A 237200 - 49 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 50 • Model: LBUS3061/3062BL / LBUK3660BL - 50 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 51 2. Outdoor Unit • Model: LBUK4260BL - 51 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 52 2. Outdoor Unit • Model: LBUK4880BL/LBUK4882BL/LBUH608RSS1 - 52 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 53 2. Outdoor Unit • Model: LBUM7280BL - 53 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 54 2. Outdoor Unit • Model: LBUM9080BL/LBUM1081BL - 54 - Copyright ©2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 55 DECEMBER, 2007 P/NO : 3828A20097T...

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