LG AP-Z Series Svc Manual
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LG AP-Z Series Svc Manual

LG AP-Z Series Svc Manual

Floor standing type air conditioner
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Internal Use Only
http://biz.lgservice.com
Floor Standing Type Air Conditioner
SVC MANUAL
MODEL : AP-Z Series
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 AP-Z Series

  • Page 1 Internal Use Only http://biz.lgservice.com Floor Standing Type Air Conditioner SVC MANUAL MODEL : AP-Z Series CAUTION Before Servicing the unit, read the safety precautions in General SVC manual. Only for authorized service personnel.

  • Page 2: Table Of Contents

    Installation of Indoor, Outdoor Unit.......................23 Test running.............................29 3-way valve ..............................31 Cycle Troubleshooting Guide .......................37 Electronic Parts Troubleshooting Guide ....................38 Exploded View............................41 - 2 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 3: Safety Precautions

    • There is risk of fire or electric • There is risk of fire or electric cause fire or electric shock shock. shock. - 3 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 4 • There is risk of fire or electric • There is risk of fire, failure of the shock. shock. product, or electric shock. - 4 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 5 • Low refrigerant levels may cause failure of product. • A bad connection may cause water leakage. - 5 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 6 • There is risk of personal injury and failure of product. • There are sharp and moving parts that could cause personal injury. - 6 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 7: Functions

    • Used to circulate room air without cooling. AutoRestart • The power comes on again after a power failure. - 7 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 8: Remote Control

    Room Temperature Control • Up: up to 30°C • Down: down to 16°C Indoor Fan speed control • High, Low - 8 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 9 • De-ice PCB Outdoor Fan Speed Control • One speed Sensing Heat Exchanger Temperature • Heat exchanger temperature sensor (Thermistor) - 9 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 10: Product Specifications

    198.4 (90) 330.7 (150) Liquid 3/8 (9.52) 3/8 (9.52) 5/8 (15.88) Connections Inch(mm) 5/8 (15.88) 3/4 (19.05) 1 (25.4) - 10 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 11 Outdoor Unit Air Outlet Vent Air Intake Vent (Rear) Remote Signal Receptor Air Outlet Vent Air Intake Vent Piping - 11 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 12: Wiring Diagram

    3854A20144Z CAPACITOR(COMP) KEY PCB ASM DOOR SENSOR (OPTION SENSOR) C TH THERMISTOR(COND TH) L/DOOR L/DOOR MOTOR MOTOR TERMINAL BLOCK - 12 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 13 Wiring Diagram ■ INDOOR *AP-Z286R20, AP-Z286R30 ■ OUTDOOR *AP-Z286RC0, AP-Z286R20, AP-Z286R30 - 13 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 14: Outdoor Unit Wiring Diagram

    POWER SUPPLY HEATER 3Ø,380-415V~,50Hz T/B2 TERMINAL(4P) YL BK YL BK (T1) (T2) (T3) 20SV 49FMo 49FMo GN/YL P/NO : 3854A20119V - 14 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 15 THERMISTOR FOR PIPE TEMP.(OUTDOOR) MAIN TERMINAL BLOCK 49FMo INTERNAL T.P FOR FMo 20SV REVERSING COIL TERMINAL BLOCK FOR CONNECTING - 15 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 16: Operation Details

    ', the Off-Timer function will be cancelled. - During Off-Timer Operation, if you repress the timer set button, the rest time will be displayed. - 16 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 17: Heating Mode Operation

    Selecting speed ≥ 39°C Ⅳ ≥28。 C Selecting speed > 34°C Ⅴ ≥26。 C ≤ 34°C Ⅵ ≤26。 C - 17 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 18 Indoor fan speed Pipe temp. Ⅰ ≤22°C(Hot start operating) Ⅱ ≥22°C Ⅲ Selecting speed ≥C°C Ⅳ ≤D°C Ⅴ ≤20°C - 18 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 19 Defrost Outdoor Pipe Temp. Defrost 12°C (Defrost OFF) -6°C (Defrost ON) HOT- START Indoor Fan Compressor 4-Way Valve - 19 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 20 ❈ During this function is operating, any buttons of Display Panel don't work. But it is possible to operate with Remote controller. - 20 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 21 In case the power comes on again after a power failure, Auto Restarting Operation is the function to operate pro- cedures automatically to the previous operating conditions. - 21 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 22 - After 18 ± 1 minutes of operation, it becomes off itself. - During the operation, signal 88 stands for "Lo" - 22 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 23: Installation Of Indoor, Outdoor Unit

    A (m) B (m) GAS SIDE LIQUID SIDE 5/8" 1/4" 28K/30K 5/8" 3/8" Outdoor unit 5/8" 3/8" 11/10" 1/2" - 23 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 24: Indoor Unit Installation

    Tilt Cut if necessary More than 15mm ④ Cut the extruded outside part of the plastic tube, if necessary. - 24 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 25: Installation Method

    Connecting the cable between outdoor Preparation of the operating and indoor unit Connecting the main cable to outdoor unit - 25 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 26: Preparation Of Installation Parts And Tools

    To connect the cable from outdoor unit to indoor unit Drain hose sockets, elbows To remote the condensing water - 26 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 27: Preparation Of Piping

    Cone Copper pipe Clamp handle Red arrow mark = Improper flaring = Inclined Surface Cracked Uneven damaged thickness - 27 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 28: Connection Of Piping

    ③ Keep in mind that the bending part should not be cracked and make the radius (R) as long as possi- ble (Refer to Fig. 2)` (Fig. 2) - 28 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 29: Test Running

    2. Ensure the difference between the intake temperature and the discharge one is more than 8°C (Cooling) or reversely (Heating). - 29 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 30: Hand Over

    HAND OVER Teach the customer the operation and maintenance procedures, using the operation manual (air filter cleaning, temperature control, etc.). - 30 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 31: 3-Way Valve

    (5) Set the liquid side valve to the closed posi- tion. - 31 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 32 – Close the valve on the gas cylinder and dis- charge the refrigerant until the gauge indicates 3 to 5 kg/cm - 32 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 33 – Discharge the refrigerant gradually; if it is dis- charged too suddenly, the refrigeration oil will also be discharged. - 33 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 34 (4) Disconnect the charge hose from the vacuum pump. – Vacuum pump oil. If the vacuum pump oil becomes dirty or depleted, replenish as needed. - 34 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 35: Gas Charging

    1 minute and then repeat the procedure (pumping down-pin). - 35 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 36 - Be sure to check gas leakage. mately 1 minute and then repeat the procedure (pumping down-pin). - 36 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 37: Cycle Troubleshooting Guide

    2. The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with putty. - 37 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 38: Electronic Parts Troubleshooting Guide

    Is IC03M operated Exchange IC03M normally? Is the each Relay Exchange Relay any problem? Check the fan motor and connector. (CN-MOTOR) - 38 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 39 Is the AC220V (AC 240 V) between connector(CN-outunit) Replacement RY-COMP ① and ③ of Main P.C.B Check the wiring diagram. - 39 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 40 Is the AC220V (AC 240 V) between Replacement RY-HEATER connector(HEATER) and CN-outunit ① of Main P.C.B Check the heater wiring - 40 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 41: Exploded View

    235512 146811C 268711A 267110 437210A W0CZZA W0FZZ W6640A W6640B 249941 268711B 135313B 268711C 159830C 249951 135303B 237201 135313A 135303A - 41 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 42 159830A 35211C 266000 336600 266000 352150 130911 W4811A 159830B 349600 567480B 266090 336610 W50400 349480A 346810 730700 140570 359012 - 42 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 43 Exploded View 2. Outdoor Unit - 43 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 44 1. Indoor Unit 135310 753000 267110 146812 753010 137211 268714 W4811 668713 W4810 354210 237202 354210 W4810 263230-1 330870 152302 135313 - 44 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 45 Exploded View 135515 249951 249941 268715 W4810 135500 130900 W0CZZ W50400 359012 336610 346810 349480 W4810 135317 150170 349600 130400 - 45 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 46 Exploded View 2. Outdoor Unit - 46 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 47 330720 359012 135316 147901A 336610A 147911 359012 330720 147901B W0CZZA 159830 336610B 249941A 249951 135313B 268711B 135313A 268711D 249941B - 47 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 48 135515 137213G 137213C 137213F 137213A 346810 150170 137213B 354210 352118 137213E 437212 137213D W4810 352115 130400 W4811 330871 730700 - 48 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 49 Remark Compressor 2520UUCY2AA 554160A Barrier Side Harness,Multi 6631A20033E W6631A APUZ728FA0 Heating Compressor 2520UBAY2AA 554160B Service Valve Harness,Multi 6631A20033F W6631B - 49 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
  • Page 50 FEBRUARY, 2010 P/NO : 3828A20156G...

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