LG Packaged Terminal Air Conditioner/Heat Pump Service Manual Download

Page: 1 / 59

Packaged Terminal

Air Conditioner/Heat Pump

SERVICE MANUAL

CAUTION

http://www.lgservice.com

• BEFORE SERVICING THE UNIT, READ THE SAFETY

PRECAUTIONS IN THIS MANUAL.

• FOR AUTHORIZED SERVICE ONLY.

Summary of Contents for Packaged Terminal Air Conditioner/Heat Pump

Page 1: ...LG Packaged Terminal Air Conditioner Heat Pump SERVICE MANUAL LG CAUTION http www lgservice com BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL FOR AUTHORIZED SERVICE ONLY ...

Page 2: ...IREMENTS 28 3 3 1 ELECTRICAL DATA FOR 230V 208 MODEL 28 3 3 2 ELECTRICAL SAFETY 28 4 FIELD INSTALLED ACCESSORIES 29 5 FERFORMANCE DATA 45 6 TROUBLESHOOTING GUIDE 6 1 OUTSIDE DIMENSIONS 50 6 2 PIPING SYSTEM 50 6 3 TROUBLESHOOTING GUIDE 51 7 SCHEMATIC DIAGRAM 56 8 EXPLODED VIEW 57 1 PREFACE This SERVICE MANUAL provides various service information including the mechanical and electrical parts etc Thi...

Page 3: ... 1055 3 0 2 8 3 8 3 5 5 2 4 8 3 68 3 66 3 44 3 43 3 29 3 28 12 5 12 5 11 7 11 7 11 2 11 2 1 208 60 1 230 60 1 208 60 1 230 60 1 208 60 1 230 60 94 6 94 7 94 9 95 7 94 8 95 6 9 5 335 9 5 335 11 390 0 9 1 2 1 5 45 43 45 43 49 47 60 58 60 58 63 61 R22 650 22 75 R22 790 27 9 R22 630 22 2 Rotary Non Tropical Rotary Non Tropical Rotary Non Tropical 2R10S236A6G QK125KBD QK145KBA PSC PSC PSC Atmos M60 or ...

Page 4: ... Panel Touch Type Timer Air Discharge Air Ventilation Deice Control Defrost Hot Start Look Cabinet Type Chassis Type Special Function Models LYH07EATA32 LYH09EATA22 LYC12EATA32 2 14 2 73 3 46 7300 9300 11800 1 82 2 35 6200 8000 2 0 3 7 3 7 6823 12623 12623 630 550 830 690 1 105 2 5 2 2 3 3 2 7 4 4 3 39 3 3 11 6 11 11 3 3 3 1 265 60 1 265 60 1 265 60 94 6 94 7 94 9 95 7 94 8 95 6 8 5 300 8 5 300 12...

Page 5: ...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 operation and maximum efficiency LED Diagnostics All units have this feature ind...

Page 6: ...both heating and cooling temperature limits by dip switches on control panel from 50 F to 90 F Temperature limits help to prevent overheating and overcooling and reduce energy costs Condensate Drain Valve The unit has a condensate drain valve to prevent water from collecting or freezing in the basepan Quick Heater Recovery The unit is designed to operate the electric heater to warm the room to the...

Page 7: ...eed fan operation HIGH HEAT Heating with the high speed fan operation VENTILATION The ventilation lever is located to the lower left side of the unit The ventilation lever must be in the CLOSE position in order to maintain the best cooling conditions When fresh air is necessary in the room set the ventilation lever to the OPEN position The damper is opened and outdoor air is drawn into the room Th...

Page 8: ...FF 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 TEMPERATURE SETTING Use this button to automatically cont...

Page 9: ... REMOTE OFF ON ON ON Remote Local Energy Saver Temperature Limit 1 Temperature Limit 2 Temperature Limit 3 PTAC PTHP UNIT TYPE LOCAL LOCAL 1 OFF OFF 2 OFF OFF 3 OFF OFF 4 OFF OFF 5 LOCAL 1 OFF 2 OFF 3 OFF 4 OFF 5 LOCAL LOCAL 1 OFF OFF 2 OFF OFF 3 OFF OFF 4 OFF OFF 5 LOCAL 1 OFF 2 OFF 3 OFF 4 OFF 5 OFF 6 OFF 7 LOCAL LOCAL 1 OFF OFF 2 OFF OFF 3 OFF OFF 4 OFF OFF 5 LOCAL 1 OFF 2 OFF 3 OFF 4 OFF 5 OFF...

Page 10: ... Limit 2 Limit 3 Lowest Temp Highest Temp Lowest Temp Highest Temp Cooling Operation Heating Operation 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 of the unit and push the bottom of fr...

Page 11: ... 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 Volt AC When you install the digital electronic thermostat y...

Page 12: ...EMOTE 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 continuous fan allows continuous circulation of room air and make ...

Page 13: ...rom 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 discharge grille to the front grille Flip the discharge gr...

Page 14: ... 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 ...

Page 15: ...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 up vertically to disassemble it completely from Air guide ...

Page 16: ...th 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 carefully 4 Remove the clamp which secures the fan with pliers Se...

Page 17: ...y 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 nuts and the 3 washers which fasten the compressor See Figu...

Page 18: ...laced 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 the P C B board 6 Re install the components by referring...

Page 19: ...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 1 After discharging the refrigerant completely unbraze the in...

Page 20: ...t 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 discharg...

Page 21: ...r proof seal leak detector tubing cutter hand tools to remove components service valve A COMPOUND GAUGE 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 A CHARGING CYLINDER LOW HI B C ...

Page 22: ... recommended the change of outside grille for an unit protection and an addition of a plastic rear grille This is optional 4 Insulation strip prevents the exhaust air from re entering from either side of condenser space which may decrease the cooling efficiency of condenser 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...

Page 23: ...ounting 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 recirculation and affect the operation of the unit See page 40 f...

Page 24: ...ge 23 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 Use a minimum of two screws or other fastening device on each side See Figur...

Page 25: ... 25 ...

Page 26: ...IT WALL RECEPTACLE BY OTHERS FINISHED FLOOR OR TOP OF CARPET Caulk around perimeter of wall case all four sides where it joins the building Interior and Exterior CAULK 1 4 CAULK LINTEL ROOM CABINET 2 MIN MOUNTING SCREWS BY INSTALLER WALL CASE OUTDOOR GRILLE SIDE CHANNEL 3 MIN 5 MAX 1 5 16 FINISHED FLOOR OR TOP OF CARPET SUB BASE RAK204 CAULK POWER SUPPLY CONDUIT ALTERNATE ENTRY 3 11 16 Caulk aroun...

Page 27: ...t the bottom to release it then lift it up along the unit top front See Figure 18 3 Slide the unit into the wall sleeve and secure with 6 screws through the unit flange holes See Figure 19 4 Reinstall the front grille by hooking the top over the unit top then pushing it in at the bottom See Figure 20 Figure 17 Figure 18 Figure 19 Figure 20 ...

Page 28: ...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 power supply requirements 208 230 and 208 230 VOLT UNITS...

Page 29: ... 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 installation and servicing of this equipment must be perfo...

Page 30: ... 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 lockout tagout procedures to ensure the power can no...

Page 31: ...ig 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 fig 31 on the pump assembly using the rubber elbows as shown in fig 28 12 Position pump assembly to the basepan as shown in fig 29 and fasten the pump bracket to the basepan using the three screws provided 13 Insert tube 2 of the pump assembly t...

Page 32: ...en the pump wire through the wire clip on the back side of the control barrier as shown in fig 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 inch 32 Figure 31 Pump assembly Tube 1 Tube 2 Rubber elbows 3 Spraying Tube Figure 32 BL BL Figure 34 Figure 33 ...

Page 33: ...he 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 the flanges of all four sides are in the up position...

Page 34: ...ury 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 place prior to its installation and use Installation The ...

Page 35: ...ly to the left rear of wall sleeve with sheet metal screws provided 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 wil...

Page 36: ...e 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 Part No AYLL101 Description Leveling legs are designed to provide extra front support and leveling of the wall sleeve Two leg assembli...

Page 37: ... 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 inch 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 screws provided 3 Adjust the leveling legs to level t...

Page 38: ...ilure 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 damage Important Note All wiring must comply with applicable local a...

Page 39: ...ead 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 the field power source 6 Connect the black lead of the wire ass...

Page 40: ...N 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 to follow these codes could result in overheating and equipment fa...

Page 41: ...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 wire to the black field connection wire TB1 Figure 51 4 Conn...

Page 42: ...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 power to this unit 1 Grasp the cabinet front as shown in...

Page 43: ...ertently 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 damage Note When using a subbase the wall sleev...

Page 44: ... 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 Line Voltage NEMA 6 20R Receptacle 230 208 VAC Field Sche...

Page 45: ...ty Btu h Cooling Amps A Cooling Power W EER Btuh Watt Moisture Removal Pts h Heat Pump Heating Data Heating Capacity Btu h Heating Amps A Heating Power W COP W W Airflow Indoor CFM W et 0 3ESP Hi Indoor CFM W et 0 3ESP Lo Indoor CFM Dry 0 3ESP Hi Indoor CFM Dry 0 3ESP Lo LP090HE 208 230 9 000 9 300 4 1 3 8 820 845 11 0 11 0 2 6 2 6 8 000 8 200 3 4 3 1 690 705 3 4 3 4 240 270 190 230 260 290 220 25...

Page 46: ...770 855 1000 1125 1040 1160 60 555 680 765 850 990 1120 1030 1150 55 540 670 765 835 980 1105 1020 1135 85 540 660 730 815 950 1070 965 1085 80 540 665 735 820 950 1075 980 1095 75 540 665 735 820 955 1080 990 1105 90 70 540 665 735 820 950 1075 990 1105 65 535 660 730 815 950 1070 990 1100 60 525 660 720 805 940 1060 980 1095 55 520 640 710 795 930 1055 965 1075 85 510 635 690 770 895 1020 915 10...

Page 47: ...400 1520 60 575 675 780 880 1060 1170 1390 1515 55 560 655 770 865 1050 1160 1370 1495 85 550 640 745 845 1020 1130 1305 1430 80 555 645 750 850 1025 1135 1325 1445 75 555 645 750 850 1025 1135 1335 1460 90 70 555 645 750 850 1025 1125 1340 1460 65 550 640 745 845 1020 1130 1335 1455 60 540 630 735 835 1010 1120 1320 1440 55 530 620 720 825 1000 1110 1260 1420 85 515 610 700 800 970 1080 1240 1360...

Page 48: ...4 28 31 26 30 26 28 65 12 15 12 14 9 13 9 13 70 60 17 20 16 18 13 17 13 17 55 22 24 20 22 18 21 17 21 Model Room Air Room Air LP070HE LP090HE LP120HE LP150HE Dry Wet Temperature Across Temperature Across Temperature Across Temperature Across Bulb Bulb Indoor Coil T Indoor Coil T Indoor Coil T Indoor Coil T Min Max Min Max Min Max Min Max Rating Btu h 7300 7600 9300 9600 12300 12600 14300 14600 Rat...

Page 49: ...28 30 80 23 24 25 28 28 31 29 31 50 75 24 25 26 29 29 32 30 31 70 26 27 28 30 31 34 32 33 65 26 27 28 30 31 34 32 33 85 19 22 22 24 24 29 27 30 80 20 23 23 25 25 29 28 31 45 75 21 24 24 26 26 30 29 31 70 22 24 24 27 27 31 30 32 65 23 25 25 28 28 32 31 33 85 17 20 20 22 23 27 27 30 80 18 21 21 23 23 28 28 31 40 75 19 22 22 24 24 29 29 31 70 20 23 23 24 25 29 30 32 65 21 24 24 25 26 30 31 33 85 15 1...

Page 50: ...le 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 PRESSURE VAPOR ROOM AIR CONDITION...

Page 51: ...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 compressor Check of cold air circulation for smooth flow Dirty i...

Page 52: ...lation 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 to start Defect of compressor capacitor Check power sour...

Page 53: ... bearings if motor shaft will not rotate replace the motor Check voltage See limits on this page If not within limits call an electrician Test capacitor 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 balan...

Page 54: ...e 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 overload if ...

Page 55: ...ures 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 missing correct If the blower or fan is hitting air guide rear...

Page 56: ... 56 7 SCHEMATIC DIAGRAM MECHANICAL P NO 3850A20594J CN EXT CN TRANS CN ODF RY HEST1 RY OFD CN IDF CN COMP CN N CN L CN EXTN N CN IDAT CN IDPT ...

Page 57: ...170 554030 148000 135515 135800 135500 567502 550140 D 346810 152302 1 359011 352390 149400 337000 349600 1 435300 567480 4 263230 1 C 552114 35211A 552113 249951 A 1 237200 W0CZZ 2 W0CZZ W6640 268711 2 135511 147910 264110 149410 238310 249941 1 8 EXPLODED VIEW 8 1 MECHANICAL COOLING ...

Page 58: ...1 549990 130411 554170 554030 148000 135515 135800 135500 567502 550140 249951 552206 D 346810 152302 1 359011 352390 149400 337000 349600 1 435300 567480 4 263230 1 C 1 552113 552116 552112 352116 352115 A 1 237200 W0CZZ 2 W0CZZ W6640 268711 2 135511 147910 264110 149410 238310 249941 1 435300 1 ...

Page 59: ...P No 3828A20308L Setember 2007 Printed in Korea ...

Search results

Summary of Contents for Packaged Terminal Air Conditioner/Heat Pump

Reviews:

Related manuals for Packaged Terminal Air Conditioner/Heat Pump

Brands by name

Popular brands

LG Packaged Terminal Air Conditioner/Heat Pump, Service Manual

Search results

Summary of Contents for Packaged Terminal Air Conditioner/Heat Pump

Reviews:

Related manuals for Packaged Terminal Air Conditioner/Heat Pump

Brands by name

Popular brands