LG LP093CD3B Svc Manual

Packaged terminal air conditioner

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LG Packaged Terminal

Air conditioner

SVC MANUAL(Exploded View)

MODEL:LP09 3CD3B

CAUTION

Before Servicing the unit, read the safety precautions in General SVC manual.

Only for authorized service personnel.

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Page 1 Internal Use Only http://biz.lgservice.com LG Packaged Terminal Air conditioner SVC MANUAL(Exploded View) MODEL:LP09 3CD3B CAUTION Before Servicing the unit, read the safety precautions in General SVC manual. Only for authorized service personnel.
Page 2 Some of functions are slightly different depending upon models. The specification may be subject to change without prior notice for purpose of improvement. - 2 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 3 This feature extends the overall life of compressor by preventing the short-cycling of the air-conditioner. When the compressor restarts, LG PTAC is designed to give a minimum of three minutes to have a time of equalizing the refrigerant pressures for optimizing cycling.
Page 4 The unit will activate the reverse cycle defrost when the outdoor coil temperature has remained at a cold temperature to form the ice on the coil.This ice will reduce airflow though the coil and will also reduce the efficiency of unit. The LG PTHP will employ an active reverse cycle defrost function to melt the ice off the outdoor coil for insuring room comfort conditions and savings from extended operation.
Page 5: Control Locations
HEAT after the cooling season is over. This odor, caused by fine dust particles on the heater, will disappear quickly. This is harmless. - 5 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 6 30 minutes. • Push Timer to cycle through the settings from 1 Hour 2 Hours 12 Hours maximum. - 6 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 7 Outdoor Air Thermistor Error (PTHP Only) CH 45 Outdoor Coil Thermistor Error (PTHP Only) CH 67 Outdoor Fan Error - 7 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 8: Additional Controls
86° F (30.0° C) 54° F (12.2° C) Unit Type Cooling+Electric Heater+Heat Pump Cooling+Electric Heater Heat Pump Only Cooling Only - 8 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 9 64°F (17.7°C) 86°F (30.0°C) 54°F (12.2°C) 76°F (24.4°C) 66°F (18.9°C) 86°F (30.0°C) 54°F (12.2°C) 74°F (23.3°C) 68°F (20.0°C) 86°F (30.0°C) 54°F (12.2°C) 72°F (22.2°C) - 9 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 10: Remote/Local Control
24 Volt-N 24 Volt-L Compressor Heater Reversing Valve High Fan Low Fan GL GH O (Molex Housing Spec 396-07V) - 10 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 11 24 Volt-L Compressor Heater Reversing Valve High Fan Low Fan LO LI GL GH O (Molex Housing Spec 396-09V) - 11 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 12: Mechanical Parts
Flip the discharge grille 180°, then reattach the discharge grille to the front grille with 4 screws. - 12 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 13: Control Box
6. Pull the control box assembly out from the unit. (See Figure 4) 7. Re-install the components by referring to the removal procedure. Figure 4 - 13 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 14: Air Handling Parts
8. Pull the electric heater towards left for a while and then lift up vertically to disassemble it completely from Air guide. Figure 8 - 14 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 15: Cross Flow Fan
Figure 12) 5. Remove the axial fan. 6. Re-install the components by referring to the removal procedure. Figure 12 - 15 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 16: Electrical Parts
4. Disconnect all the leads of capacitor terminals. 5. Re-install the components by referring to the removal procedure, above. Figure 16 - 16 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 17: Power Cord
The wires should also be pressed a little downwards to prevent touching it to the display pcb. Figure 18 - 17 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 18: Refrigeration Cycle
2. Remove the capillary tube. 3. Re-install the components by referring to notes. - 18 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 19 Open valve C. Discharge the line at the manifold connection. 5) The system is now ready for final charging. - 19 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 21: Installation
Sleeve protection and an addition of a plastic rear grille. (This is optional.) Rear - 21 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 23: Preparation Of The Front Grille
Preparation of the Wall Case for All Types of temperature control. Construction As shipped, the LG wall sleeve is ready for installation. Care should be taken in location of electrical supply entry Do not remove the stiffener from inside the wall case or the...
Page 26: Unit Installation
4. Reinstall the front grille by hooking the top over the unit top, then pushing it in at the bottom. (See Figure 4) Figure 4 - 26 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 27: Electrical Requirements
National Electrical Code and local codes and ordinances. NOTE: DO NOT USE AN EXTENSION CORD on 208, 230, and 208/230 Volt units. - 27 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 28 Figure 23 - New Door Installation Figure 21 - Remove Front Door Hinge Pins (Each Side) Brackets (Each Side) Front - 28 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 29 Important Note: The unit OFF switch does not disconnect all electrical power to this unit. - 29 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 30 10. Place the top cover assembly back into the unit. coming out of the inlet of the spraying tube. Figure 30 - 30 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 32 The unit OFF switch does not disconnect all electrical power corresonding holes in the architectural grille. to this unit. - 32 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 35 Checklist The following is an abbreviated guide to leveling leg installation. Refer to appropriate areas for more detailed information. - 35 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 36 1. Two leveling legs are supplied in each kit. 2. One kit is required per unit. 3. Fout mounting screws are provided in each kit. - 36 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 37 12. Insert the wire tie into the 1/4" diameter hole located just above the incoming power opening. Tie all wires together securely with the wire tie. See Figure 46. - 37 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 38 8. Install the junction box cover plate. 9. Reinstall the control panel assembly. Back of Control Panel - 38 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 39 Important Note: The unit OFF switch does not disconnect all electrical power Fuse Holder to this unit. Knockouts under panel - 39 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 40 Wire nut the other end to black subbase wire leading to Fuseholder RD-9 receptacle. (Figure 51) Green Field Connection Black Wiring - 40 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 41 Figure 51—Standard Escutcheon HEAT HEAT E/SAVE E/SAVE HIGH HIGH HIGH COOL COOL TIMER TIMER TEMP/TIME MODE TIMER - 41 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 42 Attach skirting with four sheet metal screws provided with kit. prior to its installation and use. (Figure 57, Location E) 7. Wire subbase for appropriate voltage (Figure 59). - 42 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 43 Figure 60 - NEMA Plug Configurations Voltage Unit Plug Subbase Receptacle 2-13/16" Cover (71 mm) Wiring Access Subbase Box Assy Low Voltage Compartment - 43 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 44: Troubleshooting Guide
LIQUID LIQUID OUTLET PRESSURE DROP (LIQUID REFRIGERANT) HIGH PRESSURE VAPOR LIQUID PEFRIGERANT CAPILLARY TUBE LOW PRESSURE VAPOR Figure 60 - 44 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 45 Satisfactory operation with temperature difference of Repair clogging in inlet & outlet air 44.6~50˚ F refrigeration circuit. (7~10˚ C) - 45 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 46 Regular but fails to start Irregular motor insulation ( ) Replacement of compressor (locking of rotor, metal) Replacement of compressor (Motor damaged) - 46 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 47 If knocking sounds continue when running or loose, replace the motor. If the motor hums or noise appears to be internal while running, replace motor. - 47 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 48: Room Air Conditioner Voltage Limits
ROOM AIR CONDITIONER VOLTAGE LIMITS NAME PLATE RATING MINIMUM MAXIMUM 208/230V 187V 253V - 48 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 49 If the blower or fan is hitting air guide, rearrange the air handling parts. Copper tubing Carefully rearrange tubing not to contact, compressor, shroud, and barrier. - 49 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 50 Compressor Gas side LOC. Description PCB Connector Thermistor for indoor Air temperature CN-IDAT Thermistor for Evaporator Pipe temperature CN-IDPT - 48 - Copyright ©2009 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 51 CN-CC CN-WRITE CN-AUX-S CN-IDPT CN-THERMO-S CN-ODT CN-IDAT2 CN-DISP1 CN-DISP2 CN-WRITE CN-PRESS CN-DIP CN-4WAY CN-ICR CN-MOTOR_IDF CN-EXT(L) CN-MOTOR_ODF CN-EXT(N) CN-N - 51 - Copyright ©2012 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 52 Note) * Please ensure GCSC since the replacement parts may be changed depending upon the buyer's request. Please check the correct parts in View RPL(Replacement Part List) on GCSC. (GCSC Website http://biz.Lgservice.com,) - 52 - Copyright ©2010 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 54 Service call Number # : 1-888-865-3026 Service call Number # : (888) LG Canada, (888) 542-2623 CANADA January, 2013...

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