Instruction/ maintenance manual of the product LP121HEM-Y8 LG Electronics
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Window Air Conditioner SVC MANUAL MODEL : LP121HEM-Y8 CAUTION Before Servicing the unit, read the safety precautions in General SVC manual. Only for authorized service personnel.
- 2 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 1. Specification Cooling Capacity kW Btu/h. Heating Capacity ( for Heat Pump models) kW Btu/h. Electric Heater capacity kW Btu/h.
- 3 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 1.2 FEA TURES AND BENEFITS The PTAC has many features, some of which are different than those found on conventional PTAC units.
• Indoor Filters The unit uses two indoor filters which slide in and cut easily. The filters may be cleaned by washing and brushing without removing the front grille. • Rotary Compressor The unit uses a rotary compressor for quiet, reliable operation and long life.
- 5 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 1.3 CONTR OL LOCA TIONS • OPERA TION ELECTRIC HEA TING MODEL VENT OPEN VENT CLOSE TEMPERATURE CONTROL Set the Thermostat control to the desired temperature mark 5 (the mid-point is a good starting position).
- 6 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 1.4 ADDITIONAL CONTR OLS • TEMPERA TURE LIMITING Temperature Limiting can save money by limiting the lowest temperature for cooling and the highest temperature for heating.
- 7 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only (Molex Housing Spec 396-09V) • FRONT DESK CONTR OL When the pair wire is connected to the connector LOand LI, the unit can be turned ON or OFF with a switch located at the Front Desk Control panel.
- 8 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 2.1 MECHANICAL P AR TS 2.1.1 FRONT GRILLE 1. Remove the front grille. (See Figure 1) 2. To remove the front grille, pull out the bottom of the front grille and then lift up.
- 9 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 2.1.2 CONTROL BO X 1. Remove the front grille. (Refer to section 2.1.1) 2. Remove the two screws which fasten the control box.
- 10 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Figure 8 2.2 AIR HANDLING P AR TS 2.2.1 ELECTRIC HEA TER (ELECTRIC HEA TER MODEL ONL Y) 1. Remove the front grille.(Refer to section 2.
- 11 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Figure 12 2.2.2 CROSS FLO W F AN 1. Remove the front grille. (Refer to section 2.1.1) 2. Remove the control box assembly. (Refer to section 2.
- 12 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 2.2.4 SHROUD 1. Remove the axial fan. (Refer to section 2.2.3) 2. Remove the 4 screws which fasten the condenser with the shroud and the basepan.
- 13 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 2.3.5 PO WER CORD 1. Remove the control box. (Refer to section 2.1.2) 2. Disconnect the grounding screw from the control box.
- 14 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 2.4 REFRIGERA TION CYCLE 2.4.1 CONDENSER 1. Remove the brace and the shroud. (Refer to section 2.2.2) 2. Remove the 4 screws which fasten the shroud.
- 15 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only — Replacement of the refrigeration cycle. 1. When replacing the refrigeration cycle, be sure to discharge the refrigerant system using a refrigerant recovery system.
- 16 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Equipment needed: Vacuum pump, charging cylinder, manifold gauge, brazing equipment. pinch-off tool capable of making a vapor-proof seal, leak detector, tubing cutter, hand tools to remove components, service valve.
- 17 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 3.1 HO W T O INST ALL 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.
- 18 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 3.2 W ALL SLEEVE INST ALLA TION 3.
- 19 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 3.2.2 PREP ARA TION OF THE FRONT GRILLE Carefully remove shipping tape from the front grille.
- 20 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only.
- 21 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only W ALL SECTION – DET AILED SIDE VIEW FRAME AND BRICK VENEER INST ALLA TIO.
- 22 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 3.2.3 UNIT INST ALLA TION 1. Remove the shipping screw from the ventilation door. (See Figure 24) 2. Remove the front gille by pulling it out at the bottom to release it, then lift it up along the unit top front.
- 23 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only P erpendicular 20 A T andem 15 A Large T andem 30 A 230/208 v olt receptacle configuration CAUTION 1. Do not use an extension cord with this unit.
- 24 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Contr ol P anel Ke y Lock Part No: AYCP101 Description The Key Lock kit prevents tampering of the controls used to set temperatures and heating or cooling functions.
- 25 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Condensate Disposal Pump Kit Installation Part No: AYSB2101 Description The internal condensate pump serves as a means for disposing of condensate generated during heat pump operation by transferring it to the indoor coil.
- 26 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 7. Remove the screw that attaches the electric heater wire to the side of the indoor fan housing. 8. Remove the 3 screws which fasten the top cover assembly.
14. Connect the condensate pump to the ICR rela y of the ter minal of the board as shown in fig. 40 Make sure to f asten the pump wire through the wire clip on the back side of the control barrier as shown in fig. 39 15. Assembly the unit bac k f ollowing the re verse order of disassemb ly .
- 28 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Ar chitecture Grille Aluminum - Single Pa ck Part No: AYAGALA01 Description Outdoor grilles are attached to the wall sleeve and exposed to the exterior wall.
- 29 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 4. Secure the grille to the sleeve by tightening the four screws to their corresponding holes in the grille. 5. Remove the wire handle after the installation is complete.
- 30 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Outdoor Drain Kit Installation Before installing the wall sleeve louvered condenser grille, it must be determined if the optional outdoor wall sleeve drain kit is to be installed.
- 31 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Indoor Drain Kit Installation The internal drain is installed on the bottom of the wall sleeve when it is required to drain the condensate into a drain system inside of the building.
- 32 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Leveling Leg Assembly To install the leveling leg assembly, complete the following: 1. Drill two 1/8-inch holes in each side of the wall sleeve, as shown in Figure 48, using the leveling leg assembly as a template.
- 33 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Har d Wire Kit Part No: AYAGALA01 Description Hard Wire Junction Box (Dire.
- 34 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 208/230 V olt Units 1. Remove and discard the white lead from the wire assembly. 2. Connect the black lead to the line 2 terminal on the control board.
- 35 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Remote Escutcheon Kit Part No: AYRE110 Description This kit provides an attractive replacement escutcheon (see Figure 53).
- 36 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 5. Replace the escutcheon with the one from this kit by inserting the tabs at the top of the escutcheon into the retaining holes and laying the escutcheon flat on the control panel.
- 37 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Note: The proper subbase must be ordered to obtain the correct electrical receptacle. (Figure 61) 8. After wiring is complete, mount covers A and F to the subbase with provided screws.
- 38 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 5.1 OUTSIDE DIMENSIONS 1,066mm (42") 505mm (20") 406mm (16") 406mm (16") 5.2 PIPING SYSTEM Following is a brief description of the important components and their functions in the refrigeration system.
- 39 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 5.3 TR OUBLESHOO TING GUIDE In general, possible trouble is classified in two causes.
- 40 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only Fails to Start Check circuit break er and fuse. Gas leakage of f eeler bulb of thermostat Check control s witch. Only f an fails to start.
- 41 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only COMPLAINT CAUSE REMEDY Check voltage at outlet. Correct if none. Check voltage to rotary switch. If none, check power supply cord.
- 42 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only NAME PLATE RATING MINIMUM MAXIMUM 208/230V 187V 253V COMPLAINT CAUSE REMEDY Check voltage. See the limits on the preceding. page.
- 43 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only COMPLAINT CAUSE REMEDY Check the voltage. See the limits on the preced- ing page. If not within limits, call an electrician. Check overload, if externally mounted.
- 44 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 6. Piping Diagrams CAPILLARY TUBE HEAT EXCHANGER (EVAPORATOR) HEAT EXCHANGER (CONDENSER) COMPRESSOR ACCUMULATOR Cooling Heatig REVERSING VALVE Th1 Th2 LOC.
- 45 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only 1 YL YL YL OR OR RD RD 2 3 4 OR OR OR OR RD YL E/HEA TER ASSEMBL Y CN-TRANS CN-COMP CN-N(N) CN-IAT CN-ICT CN-OUT CN-EXT(L) CN-IDF CN-4WAY CN-ICR CN-ODF RY-HEAT2 RY-HEAT1 CN-N(L) CN-EXT(N) CN-EXT 7.
- 46 - Copyright ©2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only F E B 753010 W50400 152302B 135312 330870 354210 349600B 546810 559011 549.
P/NO : MFL42137109 JANUARY, 2008.
An important point after buying a device LG Electronics LP121HEM-Y8 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought LG Electronics LP121HEM-Y8 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data LG Electronics LP121HEM-Y8 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, LG Electronics LP121HEM-Y8 you will learn all the available features of the product, as well as information on its operation. The information that you get LG Electronics LP121HEM-Y8 will certainly help you make a decision on the purchase.
If you already are a holder of LG Electronics LP121HEM-Y8, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime LG Electronics LP121HEM-Y8.
However, one of the most important roles played by the user manual is to help in solving problems with LG Electronics LP121HEM-Y8. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device LG Electronics LP121HEM-Y8 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
