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Copyright ©2012 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

3.1 HOW TO INSTALL THE UNIT

For existing sleeve,

you should measure the wall sleeve

dimensions.
Install the new air conditioner according to these installation
instructions to achieve the best performence. All wall sleeves
used to mount the new air conditioner must be in good
structural condition and have a rear grille that securely
attaches to the sleeve or the flange of the sleeve to secure the
new air conditioner.

• To avoid vibration and noise, make sure the unit is installed

securely and firmly.

When installing the sleeve, make certain there is nothing
within 20" of the back that would interfere with heat radiation
and exhaust air flow.

To maintain the best performance of LG
PTAC

1. An insulation strip must be attached. The

insulation strip is provided with the box.

2. After assembly of sleeve & Front grille, the gap

should be 20” from both sleeve & grille. For
assembly PTAC Model refer the diagram given
below.

1) Take out the insulation strip from the upper packing.
2) Attach the insulation strip onto the rear upper side of the

wall sleeve.

3) If anyone would like to improve unit energy efficiency, it is

recommended the change of outside grille for an unit
protection and an addition of a plastic rear grille. (This is
optional.)

NOTICE

406 mm

(16")

1,066 mm

(42")

349 mm
(13

3

/

4

")

505 mm

(20")

42"

13-3/4"

16"

1-1/2" TYP

1/2"

6"

21"

36"

1/2" SQ. HOLE (2 REQ'D.)

1/2" DIA.

HOLE (3 REQ'D.)

2-3/4"

5-5/8"

4"

Over 20"

HEAT

RADIATION

WALL

WALL

INSULATION

SLEEVE

INTAKE
AIR

COOLED
AIR

1/4" Bubble
of the level

Over 20"

Front

Insulation Strip

Rear

Sleeve

280 mm

(11")

• There are sharp edges that can cause serious cuts.
• When lifting the air conditioner, it is HEAVY.

Use 2 people to lift.

CAUTION

Dimension of air conditioner

Dimension of sleeve assembly (optional)

Wall opening 16-1/4"x42-1/4"

3. Installation

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Содержание LP093CD3B

Страница 1: ... 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 Internal Use Only http biz lgservice com ...

Страница 2: ...e Prefilter washable anti fungus Plasma Filter Steps Fan Cool Heat Airflow Direction Control up down Airflow Direction Control left right Remote Controller Type Setting Temperature Cooling Range Heating Auto Operation Micom Control Panel Touch Type Timer Air Discharge Air Ventilation Defrost Control Hot Start Look Cabinet Type Chassis Type Special Function LP093CD3B 8 7 2 3 7 2 0 0 5 9 0 0 3 9 5 3...

Страница 3: ...um of three minutes to have a time of equalizing the refrigerant pressures for optimizing cycling Fan Only Setting High Low The fan can run at HIGH or LOW speed without COOLING or HEATING to provide air circulation and ventilation Indoor Fan Speed Selections High Low The fan can run at HIGH or LOW speed for either COOLING or HEATING Two Fan motors The unit has two fan motors to provide quiet opera...

Страница 4: ... by dip switches on control panel from 50 F to 90 F Temperature limits help to prevent overheating and overcooling and reduce energy costs Quick Heater Recovery The unit is designed to operate the electric heater to warm the room to the temperature set point as soon as heat pump cycle is on in heating This feature has an advantage of reducing the time to reach the set point and improving the tempe...

Страница 5: ...sary in the room set the ventilation lever to the OPEN position The damper is opened and outdoor air is drawn into the room This will reduce the cooling or heating efficiency When the air conditioner has performed a cooling or heating operation and is turned off or set to the fan position wait at least 3 minutes before resetting to the cooling operation A slight heat odor may come from the unit wh...

Страница 6: ...uns continually for normal heating operation TIMER SHUT OFF TIME You will usually use shut off time while you sleep If unit is running use Timer to set number of hours until shut off For your sleeping comfort once Time is set the Temperature setting will raise 2 F after 30 minutes and once again after another 30 minutes Push Timer to cycle through the settings from 1 Hour 2 Hours 12 Hours maximum ...

Страница 7: ...ne the problem So that the engineer should go fully prepared with the prescribed tools to be used regarding that problem It also keeps the customer aware about the unit Here are some of the problems defined below for which the LED indicates by flashing The errors are the mentioned which is as follows Electrical Controls ON Normal OFF No power failed board Fault Codes CH 01 Indoor Air Thermistor Er...

Страница 8: ...e Limit 1 Limit 2 Limit 3 Lowest Temp Highest Temp Lowest Temp Highest Temp Cooling Operation 3 4 5 Heating Operation Cooling Electric Heater Heat Pump OFF OFF Cooling Electric Heater ON OFF Cooling Only Heat Pump Only Unit Type ON OFF 7 ON ON 6 1 4 ADDITIONAL CONTROLS REMOVING THE FRONT GRILLE Additional controls are available after removing the front grille and option cover of control box To rem...

Страница 9: ... Temperature Temperature Limit 1 Limit 2 Limit 3 Lowest Temp Highest Temp Lowest Temp Highest Temp Cooling Operation Heating Operation 3 4 5 REMOVING THE FRONT GRILLE Additional controls are available after removing the front grille and option cover of control box To remove the front grille pull out the bottom of front grille and then lift up To replace the front grille place the tabs over the top...

Страница 10: ...tch located at the Front Desk Control panel When the front desk switch is ON the fan operates according to the setting without working compressor and heater When the front desk switch is OFF the unit can operate according to the setting of controls REMOTE WALL THERMOSTAT When the wires are connected the unit will be controlled by a remote wall thermostat The thermostat connections supply the 24 Vo...

Страница 11: ...struction in this manual for the Remote Wall Thermostat REMOTE LOCAL CONTROL When remote local switch 1 is on it allow the unit to operate by the control of Remote Wall Thermostat The unit control by knobs are not available ENERGY SAVER The energy saver switch 2 is on This switch is set at continuous fan to provide continuous fan operation in cool or heat modes When the switch is off the continuou...

Страница 12: ...nto place This Room Air Conditioner PTAC discharges air from the top of the unit through reversible 2 position discharge grille louvers The unit is shipped from the factory with the discharge grille louvers at an angle of 40 off vertical In the alternate position the louvers will be at an angle of 15 off vertical To adjust air direction remove the front grille Remove the 4 screws that fasten the d...

Страница 13: ...to section 2 1 1 2 Remove the two screws which fasten the control box See Figure 2 3 Pull the control box from the Air guide 4 Remove the control box cover See Figure 3 5 Disconnect wire housings on the 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 2 Figure 3 Figure 4 ...

Страница 14: ...Refer to section 2 1 2 3 Remove the 4 screws which fasten the Evaporator See Figure 5 4 Remove the top cover assembly net steel brace See Figure 6 5 Remove the 6 screws which fasten the Air guide 6 Pull the Air guide assembly out from the unit See Figure 7 7 Remove the 2 screws which fasten the electric heater in the left hand side 8 Pull the electric heater towards left for a while and then lift ...

Страница 15: ...ve the 4 screws which fasten the indoor motor and the earth wire See Figure 10 6 Remove the supports on both sides 7 Pull the cross flow fan out from the air guide 8 Re install the components by referring to the removal procedure 2 2 3 AXIAL FAN 1 Remove the brace 2 Remove the 4 screws which fasten the condenser with the shroud and the basepan See Figure 11 3 Remove the condenser sideways carefull...

Страница 16: ...charge the refrigerant system using a refrigerant recovery system If there is no valve to attach the recovery system install one such as a WATCO A 1 before venting the refrigerant Leave the valve in place after servicing the system 2 Disconnect the 3 leads from the compressor 3 After purging the unit completely unbraze the suction and discharge tubes at the compressor connections 4 Remove the 3 nu...

Страница 17: ...e supply cord of this appliance is damaged it must be replaced by an exact replacement part The special cord means the cord which has the same specification marked on the supply cord fitted to the unit 2 3 6 P C B 1 Remove the escutcheon 2 Remove the two knobs 3 Remove the 2 screws which fasten P C B cover 4 Disconnect all the leads which connected to the P C B 5 Remove the two screws which fasten...

Страница 18: ...Discharge the refrigerant completely 3 Remove the control box assembly Refer to section 2 1 2 4 Remove the 4 screws which fasten the evaporator at the left side and the right side 5 Move the evaporator sideward carefully and then unbraze the interconnecting tube at the evaporator connectors 6 Remove the evaporator 7 Re install the components by referring to notes See Figure 20 2 4 3 CAPILLARY TUBE...

Страница 19: ... at the manifold connection 5 The system is now ready for final charging 6 Recharge as follows 1 Refrigeration cycle systems are charged from the high side If the total charge cannot be put in the high side the balance will be put in the suction line through the access valve which you installed as the system was opened 2 Connect the charging cylinder as shown in Figure 16B With valve C open discha...

Страница 20: ...ent pinch off tool capable of making a vapor proof seal leak detector tubing cutter hand tools to remove components service valve A COMPOUND GAUGE R410A EVAPORATOR LOW PRESSURE SIDE COMPRESSOR CAPILLARY TUBE CONDENSER HIGH PRESSURE SIDE SEE INSETS BELOW MANIFOLD GAUGE B Figure 16 A Pulling Vacuum Figure 16 B Charging A B EXTERNAL VACUUM PUMP COMPOUND GAUGE R410A A CHARGING CYLINDER LOW HI B C ...

Страница 21: ...ttached The insulation strip is provided with the box 2 After assembly of sleeve Front grille the gap should be 20 from both sleeve grille For assembly PTAC Model refer the diagram given below 1 Take out the insulation strip from the upper packing 2 Attach the insulation strip onto the rear upper side of the wall sleeve 3 If anyone would like to improve unit energy efficiency it is recommended the...

Страница 22: ... case may be installed flush with the finished indoor wall Mounting an outdoor grille or louver section to the building face may cause a space between the outdoor coil and the louver section Air splitters aligned with the ends of the outdoor coil must be installed between the outdoor coil inlet and outlet air streams Gaps between the outdoor coil and the louver section may allow condenser air reci...

Страница 23: ...mum exterior dimensions are not met refer to FRAME AND BRICK VENEER INSTALLATION The outside edge of the wall case should extend at least 1 4 beyond the outside wall This is necessary for proper caulking to prevent sealing thedrain holes in the rear flange of the wall case and to facilitate the installation of an accessory drain if used 2 The wall case should be secured to the wall at both sides U...

Страница 24: ... 24 Copyright 2012 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only ...

Страница 25: ...K 1 4 M IN POW ER S U PPLY CO N D U IT W ALL RECEPTACL E BY O TH ERS FINIS H ED FLOO R O R T O P O F CA RPET Caulk around perimeter of wall case all four sides w here it j oins t he buildin g I n terior and E xterior CAULK 1 4 CAULK LINTEL ROOM CABINET 2 M IN M O U NTING S CREW S BY IN STALLER WALL CASE O U TD OO R G RI LLE SI D E CH A NNE L 3 M IN 5 M A X 1 5 1 6 FINIS H ED FLOO R O R T O P O F C...

Страница 26: ...or See Figure 1 2 Remove the front gille by pulling it out at the bottom to release it then lift it up along the unit top front See Figure 2 3 Slide the unit into the wall sleeve and secure with 6 screws through the unit flange holes See Figure 3 4 Reinstall the front grille by hooking the top over the unit top then pushing it in at the bottom See Figure 4 Figure 1 Figure 2 Figure 3 Figure 4 ...

Страница 27: ...r supply requirements 3 3 1 ELECTRICAL DATA FOR 208 230V MODEL 3 3 2 ELECTRICAL SAFETY IMPORTANT GROUNDING INSTRUCTIONS The air conditioner has a three prong grounding plug on its power supply cord which must be plugged into properly grounded three prong wall receptacle for your protection against possible shock hazard FUSE Use a time delay fuse or circuit breaker Refer to the nameplate for proper...

Страница 28: ...s Figure 22 3 Install the new door assembly with the key lock by bowing the door with both hands and aligning the door hinge pins with their bracket in the front Figure 23 Important Note Personal Risk Hazard Underwriter s Laboratories Inc listed For institutional use only where supervisory monitoring is available Any other use may increase the risk of personal injury or property damage Note The in...

Страница 29: ...ote it on the delivery receipt Unit must be stored in its original shipping carton in a dry secure place prior to its installation and use Installation The installation and servicing of the equipment referred to in this booklet should be performed by qualified experienced technicians WARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper...

Страница 30: ...7 Then install one of the three rubber elbows ref Figure 31 at the inlet of the spraying tube and through the rubber grommet 10 Place the top cover assembly back into the unit 11 Install tube 1 and tube 2 ref Figure 31 on the pump assembly using the rubber elbows as shown in Figure 28 12 Position pump assembly to the basepan as shown in Figure 29 and fasten the pump bracket to the basepan using th...

Страница 31: ...as shown in Figure 32 34 whichever is applicable Make sure to fasten the pump wire through the wire clip on the back side of the control barrier as shown in Figure 33 15 Assembly the unit back following the reverse order of disassembly NOTE All tube should be inserted into rubber elbows by at least 1 2 Figure 31 Pump assembly Tube 1 Tube 2 Rubber elbows 3 Spraying Tube Figure 33 Figure 32 BL BL ...

Страница 32: ... sleeve These items may be removed from inside of the building Note The sleeve stiffener must be taken out before the rear sleeve enclosure panel can be removed from the sleeve 2 Prepare the stamped aluminum grille for installation on the sleeve by inserting the six 6 plastic grommets into the square holes located near the outer edges of all four sides of the grille With the grille positioned so t...

Страница 33: ...er before servicing could result in death or serious injury Important Note The unit OFF switch does not disconnect all electrical power to this unit Receiving Upon receipt of the product inspect the shipping carton for signs of visible damage Report any damage or shortage to the carrier and note it on the delivery receipt The product must be stored in its original shipping carton in a dry secure p...

Страница 34: ...rovided See Figure 39 for finished left hand side installation If the unit chassis is to be installed right away install the condenser grille to wall sleeve with hardware provided See condenser grille installation instructions If the unit chassis will not be installed right away replace the rear enclosure panel in the wall sleeve This will help protect the inside of the building from weather damag...

Страница 35: ...cted to the drain system inside of the building Install the two blank off plates C and gaskets A on the outdoor portion of the wall sleeve as shown in Figure 40 These components may be installed after the sleeve is secured in the wall opening just prior to the installation of the condenser grille and chassis Leveling Legs Model AYLL101 Description Leveling legs are designed to provide extra front ...

Страница 36: ...side to side Provide a slight slope one quarter bubble in the sight glass toward the outside Check the level again after the unit has been installed Adjust the legs as needed Installation on Wall Sleeve 1 Drill four 1 8 diameter holes in the wall sleeve two on each side using the leveling legs as a template Caulk around screws to prevent water leaks 2 Attach the legs to the wall sleeve using the s...

Страница 37: ...ocedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury Important Note The unit OFF switch does not disconnect all electrical power to this unit CAUTION Use Copper Conductors Only Unit terminals are not designed to accept other types of conductors Failure to use copper conductors may result in equipment da...

Страница 38: ...iscard the red lead from the wire assembly 2 Connect the black lead to the center terminal of the fuse holder 3 Connect the white lead to the common C terminal on the capacitor 4 Connect the ground wire to the partition panel where the ground wire on the power cord was located Use the supplied green ground screw 5 Connect the white lead of the wire assembly at the junction box to the white lead of...

Страница 39: ...switch does not disconnect all electrical power to this unit CAUTION Use Copper Conductors Only Unit terminals are not designed to accept other types of conductors Failure to use copper conductors may result in equipment damage Important Note All wiring must comply with applicable local and national codes Type and location of fused disconnect switch es must comply with all applicable codes Failure...

Страница 40: ...older Kit Installation With Subbase See previous section for installation in the control panel 1 Remove both knockouts at the fuse holder location Figure 50 2 Install the fuse holders using screws provided The side connector tab on the fuse holders should be towards the left 3 Connect a stripped BK 9 wire to the center of the quick connect tab of the fuse holders Wire nut the other end of this wir...

Страница 41: ... performed by qualified experienced technicians WARNING Hazardous Voltage Disconnect all electric power including remote disconnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury Important Note The unit OFF switch does not disconnect all electrical ...

Страница 42: ...onnects before servicing Follow proper lockout tagout procedures to ensure the power can not be inadvertently energized Failure to disconnect power before servicing could result in death or serious injury Important Note The unit OFF switch does not disconnect all electrical power to this unit CAUTION Use Copper Conductors Only Unit terminals are not designed to accept other types of conductors Fai...

Страница 43: ...ring Access Subbase Box Assy Low Voltage Compartment 2 13 16 71 mm 11 13 16 300 mm A B F C E D D E Wall Sleeve Outdoor Side Wall Sleeve Inside Edge Back of Flange A 13 3 4 2 3 4 2 5 8 13 7 8 352 mm 3 1 16 78 mm Left End View Concentric Knockouts In Bottom Ground Screw Location Receptacle Provided Inside subbase Accessory Top View Concentric Knockouts In Rear Field Wiring Line Voltage Field Wiring ...

Страница 44: ...1 to follow the refrigeration cycle and the flow of the refrigerant in the cooling cycle MOTOR COMPRESSOR OIL LIQUID REFRIGERANT CAPILLARY TUBE OUTSIDE COOLING AIR FOR REFRIGERANT PASS THROUGH SUCTION LIME COOL LOW PRESSURE VAPOR COOLED AIR COMPLETE LIQUID BOIL OFF POINT LIQUID PRESSURE DROP ROOM AIR HEAT LOAD VAPOR INLET HOT DISCHARGED AIR LIQUID OUTLET HIGH PRESSURE VAPOR LIQUID PEFRIGERANT LOW ...

Страница 45: ...g Check of outdoor coil heat exchanger the fan operation Check gas leakage Repair gas leak Replacement of unit if the unit is beyond repair Satisfactory operation with temperature difference of inlet outlet air 44 6 50 F 7 10 C Check heat load increase Unexpected residue Overloaded Circuit Check of inside gas pressure Adjusting of refrigerant charge Malfunction of compressor Replacement of compres...

Страница 46: ...capacitor Irregular motor resistance Irregular motor insulation Replacement of fan motor Regular but fails to start Replacement of compressor locking of rotor metal Improper thermostat setting Loose terminal connection Improper wiring Irregular motor resistance Irregular motor insulation Replacement of compressor Motor damaged Drop of power voltage Check capacitor Replacement Only compressor fails...

Страница 47: ...if motor shaft will not rotate replace the motor Check voltage See limits on this page If not within limits call an electrician Check bearings Does the fan blade rotate freely If not replace fan motor Pay attention to any change from high speed to low speed If the speed does not change replace the motor Check grommets if worn or missing replace them If cracked out of balance or partially missing r...

Страница 48: ...eck the position of knob If not at the coldest setting advance the knob to this setting and restart unit Check continuity of the thermostat Replace thermostat if circuit is open Check the capacitor Replace if not within 10 of manufacturers rating Replace if shorted open or damaged Check the compressor for open circuit or ground If open or grounded replace the compressor Check the compressor overlo...

Страница 49: ...e closed over a large area on the coil surface head pressures will increase causing the compressor to cycle Straighten the fins or replace the coil Test capacitor Check the terminals If loose repair or replace Check the system for restriction If restricted clean of replace Close if open Determine if the unit is properly sized for the area to be cooled Check the set screw or clamp If loose or missi...

Страница 50: ... purposes LGE Internal Use Only Heat Exchanger Evaporator Heat Exchanger Condenser Capillary Tube Axial Fan Liquid side Th1 Th2 Compressor Gas side C F F LOC Description PCB Connector Th1 Thermistor for indoor Air temperature CN IDAT Th2 Thermistor for Evaporator Pipe temperature CN IDPT ...

Страница 51: ...B2 GN YL LIVE BK NEUTRAL WH CN 4WAY CN ICR RY COMP CN EXT L CN EXT N CN_N INDOOR FAN MOTOR MAIN PWB ASM YL BL WH BK RD YL BL WH BK RD OUTDOOR FAN MOTOR YL BL WH BK RD YL BL WH BK RD BK BK Pressure Switch BK BK BK BK F HERM BL RD BR OLP BL RD BR R COMP WH TB1 POWER INPUT INDOOR AIR THERMISTOR INDOOR COIL THERMISTOR OUTDOOR AIR THERMISTOR OUTDOOR COIL THERMISTOR CN IDPT CN IDAT2 CN MOTOR_IDF CN MOTO...

Страница 52: ...N OFF 268711A 249940 249941 268711D 264110 D 346810 152302A 359011 342800 337000 349600A W5210B 263230A 263230B 435300A 261704 135500B 435301 W6631B 249950 249300 235041 135500 W49810A W49810B 749750 149400B 349600C 152302C 149400A W6631D W6631C Description Location No Indoor Air Thermistor 263230A Indoor Coil Thermistor 263230B 8 Exploded View Note Please ensure GCSC since the replacement parts m...

Страница 53: ......

Страница 54: ...January 2013 Service call Number 888 LG Canada 888 542 2623 Service call Number 1 888 865 3026 US CANADA ...

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