LG LP070HED1 Service Manual
LG LP070HED1 Manual
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- LG LP070HED1 | Service Manual - Page 1
http://www.lgservice.com LG LG Packaged Terminal Air Conditioner/Heat Pump SERVICE MANUAL Downloaded from www.Manualslib.com manuals search engine CAUTION • BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. • FOR AUTHORIZED SERVICE ONLY. - LG LP070HED1 | Service Manual - Page 2
9 2. DISASSEMBLY INSTRUCTIONS 2.1 MECHANICAL PARTS P.C.B 17 2.4 REFRIGERATION CYCLE 18 2.4.1 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 - LG LP070HED1 | Service Manual - Page 3
Level Indoor,H/M/L dB(A)+3 45/-/43 Outdoor,Max dB(A)+3 60/58 Refrigerant & Charge g(oz) R22,645(22.8) Compressor Type Rotaty(Non POLES 50 3*2.1 1066*406*505 42*16*19-7/8 39.3(87) YA Thermistor O O 2/2/2 Manual 54˚F~86˚F(12.2˚C~30˚C) 54˚F~86˚F(12.2˚C~30˚C) Micom 12h, On/Off Rear O L-Look - LG LP070HED1 | Service Manual - Page 4
LP070HED1 47 49/-/47 Outdoor,Max dB(A)+3 60/58 60/58 63/61 63/61 Refrigerant & Charge g(oz) R22, 625(22.0) R22, 730(25.8) R22, 970( Heat 2/2/2 2/2/2 2/2/2 2/2/2 Airflow Direction Control(up&down) Manual Manual Manual Manual Airflow Direction Control(left&right) - - - - - LG LP070HED1 | Service Manual - Page 5
conventional PTAC units. The servicer must be familiar with these features in order to properly service the unit. VERTICAL AIR give a minimum of three minutes to have a time of equalizing the refrigerant pressures for optimizing cycling. • Fan-Only Setting - High/Low The manuals search engine -5- - LG LP070HED1 | Service Manual - Page 6
-mounted thermostat, if desired. The unit has a built-in low voltage power source which can accommodate a large variety of thermostat choices-manual, auto changeover, or programmable. A remote thermostat can also be added to any installed unit. • Zone Sensor Occupants enjoy ultimate comfort with - LG LP070HED1 | Service Manual - Page 7
cooling season is over. This odor, caused by fine dust particles on the heater, will disappear quickly. This is harmless. Downloaded from www.Manualslib.com manuals search engine -7- - LG LP070HED1 | Service Manual - Page 8
, and once again after another 30 minutes. • Push Timer to cycle through the settings from 1 Hour ¡ 2 Hours ¡ ... ¡ 12 Hours maximum. Downloaded from www.Manualslib.com manuals search engine -8- - LG LP070HED1 | Service Manual - Page 9
the option cover of control box. The standard settings will be in the OFF position. The authorized servicer has to check switches and ensure the switches are in the desired position. REMOTE ON ON ON Heater Heat Pump Only Cooling Only Downloaded from www.Manualslib.com manuals search engine -9- - LG LP070HED1 | Service Manual - Page 10
cover of control box. The standard settings will be in the OFF position. The authorized service man has to check switches and ensure the switches are in the desired position. REMOTE 68°F (20.0°C) 86°F (30.0°C) 54°F (12.2°C) 72°F (22.2°C) Downloaded from www.Manualslib.com manuals search engine -10- - LG LP070HED1 | Service Manual - Page 11
supply the 24 Volt AC. When you install the digital/electronic thermostat, you must set it to 24 Volt AC. See the installation Instruction in this manual for the Remote Wall Thermostat. 24 Volt-N 24 Volt-L Compressor Heater Reversing Valve High Fan Low Fan GL GH O W Y R C (Molex Housing Spec 396 - LG LP070HED1 | Service Manual - Page 12
supply the 24 Volt AC. When you install the digital / electronic thermostat, you must set it to the 24 Volt AC. See the installation Instruction in this manual for the Remote Wall Thermostat. 24 Volt-N 24 Volt-L Compressor Heater Reversing Valve High Fan Low Fan LO LI GL GH O W Y R C (Molex Housing - LG LP070HED1 | Service Manual - Page 13
2. DISASSEMBLY INSTRUCTIONS - Before the following disassembly, POWER SWITCH is set to OFF and disconnected the power cord. 2.1 MECHANICAL PARTS 2.1.1 FRONT GRILLE reattach the discharge grille to the front grille with 4 screws. Downloaded from www.Manualslib.com manuals search engine -13- Screws - LG LP070HED1 | Service Manual - Page 14
the two screws which fasten the control box. (See Figure 2) 3. Pull the control box from the Air guide. Figure 2 4. Remove the control box cover. (See Figure 3) 5. Disconnect wire housings on the control the removal procedure. Figure 4 Downloaded from www.Manualslib.com manuals search engine -14- - LG LP070HED1 | Service Manual - Page 15
fan with plier. 5. Remove the fan. (See Fig. 8) 6. Re-install the components by referring to the removal procedure, above. Figure 7 Downloaded from www.Manualslib.com manuals search engine Figure 8 -15- - LG LP070HED1 | Service Manual - Page 16
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 Figure 9 Figure 10 Figure 11 Downloaded from www.Manualslib.com manuals search engine -16- Figure 12 - LG LP070HED1 | Service Manual - Page 17
-marked hole for ground connection.) 7. If the supply cord of this appliance is damaged, it must be replaced by an exact replacement part. (The install the components by referring to the removal procedure, above. WARNING After servicing control box ,make sure that AC and DC wires are separated and - LG LP070HED1 | Service Manual - Page 18
before venting the refrigerant. Leave the valve in place after servicing the system. After discharging the refrigerant completely, unbraze the section 2.1.1) 2. Discharge the refrigerant completely. 3. Remove the control 1. After discharging the refrigerant completely, unbraze the interconnecting - LG LP070HED1 | Service Manual - Page 19
recovery system, install one (such as a WATCO A-1) before venting the refrigerant. Leave the valve in place after servicing the system. 2. After discharging the unit completely, remove the desired component, of the pinch-off connection. Downloaded from www.Manualslib.com manuals search engine -19- - LG LP070HED1 | Service Manual - Page 20
vapor-proof seal, leak detector, tubing cutter, hand tools to remove components, service valve. CONDENSER (HIGH PRESSURE SIDE) COMPOUND GAUGE MANIFOLD GAUGE B A CAPILLARY CYLINDER C Figure 17A-Pulling Vacuum Downloaded from www.Manualslib.com manuals search engine -20- Figure 17B-Charging - LG LP070HED1 | Service Manual - Page 21
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 Insulation Strip Rear -21- Downloaded from www.Manualslib.com manuals search engine - LG LP070HED1 | Service Manual - Page 22
to minimize installation problems and assure you of trouble-free installation. Refer to page 24 for required wall opening dimensions. Minimum recommended interior and exterior case projection for standard wall thicknesses are shown in the drawings in this manual - LG LP070HED1 | Service Manual - Page 23
than the case dimensions, spacers must be used on the sides between the wall case and the wall support structure to prevent distorting the wall case. 3. Caulk or gasket the entire opening on the outside between not met, refer to page 23. Downloaded from www.Manualslib.com manuals search engine -23- - LG LP070HED1 | Service Manual - Page 24
Downloaded from www.Manualslib.com manuals search engine -24- - LG LP070HED1 | Service Manual - Page 25
Downloaded from www.Manualslib.com manuals search engine Cord Set Connected WALL SECTION - DETAILED SIDE VIEW FRAME AND BRICK VENEER INSTALLATION Sub-Base Connected -25- CAULK* RAB71 13-3/4" RAB77 13-7/8" 20-7/8" ( - LG LP070HED1 | Service Manual - Page 26
by hooking the top over the unit top, then pushing it in at the bottom. (See Figure 23) Figure 22 Downloaded from www.Manualslib.com manuals search engine Figure 23 -26- - LG LP070HED1 | Service Manual - Page 27
controls is still energized. 3. Disconnect the power to the unit before servicing the unit. 4. Remove the power cord from the wall receptacle. breaker (2500W Heater 3.3.2 ELECTRICAL SAFETY IMPORTANT GROUNDING INSTRUCTIONS The air conditioner has a three-prong grounding manuals search engine -27- - LG LP070HED1 | Service Manual - Page 28
4. FIELD INSTALLED ACCESSORIES Note: The installation and servicing of this equipment must be performed by qualifieed. experienced technicians NOTICE: Warnings and Cautions appear at appropriate sections throughout this manual. Read these carefully. WARNING - Indicates a potentially hazardous - LG LP070HED1 | Service Manual - Page 29
prior to its installation and use. Figure 28 Mounting Screws Installation The installation and servicing of the equipment referred to in this booklet should be performed by qualified, experienced then lifting up and out from chassis. -29- Downloaded from www.Manualslib.com manuals search engine - LG LP070HED1 | Service Manual - Page 30
approximately the position shown. (Figure 34) 14. Snap the provided round plastic grommet into the top condenser baffle. (Figure 34) Downloaded from www.Manualslib.com manuals search engine -30- - LG LP070HED1 | Service Manual - Page 31
from the back of the unit). Figure 37 - Internal Condensate Removal Pump Wiring Permagum Plastic Ring Grommet Condensate Pump Cord Downloaded from www.Manualslib.com manuals search engine -31- - LG LP070HED1 | Service Manual - Page 32
The installation and servicing of the equipment before servicing. to disconnect power before servicing could result in death Install the stamped aluminum grille by aligning the guide pins located in the lower right and left 1 of the stamped aluminum grille instructions. 2. Turn the grille so it - LG LP070HED1 | Service Manual - Page 33
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. components of the drain kit. Downloaded from www.Manualslib.com manuals search engine -33- - LG LP070HED1 | Service Manual - Page 34
away, install the condenser grille to wall sleeve with hardware provided. See condenser grille installation instructions. BLANK-OFF PLATE SHEET METAL SCREWS Figure 43 See Detail A Sleeve overflow port Do not MTG. Screws (2) Detail A -34- Downloaded from www.Manualslib.com manuals search engine - LG LP070HED1 | Service Manual - Page 35
in the lower right hand corner of these instructions to locate the field drilled holes. (Two are designed to provide extra front support and leveling of the wall and servicing of servicing. to disconnect power before servicing could result in death an abbreviated guide to leveling leg installation - LG LP070HED1 | Service Manual - Page 36
, using the leveling leg assembly as a template. Locations near the front of the sleeve provide more support. 2. Adjust the leveling legs to the approximate height needed and install them on either side of the are provided in each kit. Downloaded from www.Manualslib.com manuals search engine -36- - LG LP070HED1 | Service Manual - Page 37
installation and use. Installation The installation and servicing of this equipment should performed by qualified, experienced switch in the junction box. Refer to the Power Switch Installation Instructions. 4. Remove control panel assembly by removing the two screws holding manuals search engine - LG LP070HED1 | Service Manual - Page 38
- Electrical Wiring Routing Right Side of Chassis Wire Tie 3/16 Inch Diamenter Hole Electrical Supply Wires Back of Control Panel Downloaded from www.Manualslib.com manuals search engine -38- - LG LP070HED1 | Service Manual - Page 39
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 Fuse Holder Knockouts under panel Downloaded from www.Manualslib.com manuals search engine -39- - LG LP070HED1 | Service Manual - Page 40
Holder Knockouts Leveling Leg Power Switch Knockouts Figure 53 - Fuse Holder Diagram Subbase Installation Fuseholder BK-9 Fuseholder RD-9 Electrical Receptacle Downloaded from www.Manualslib.com manuals search engine Field Connection Wiring -40- Green Black Red - LG LP070HED1 | Service Manual - Page 41
secure place prior to its installation and use. Figure 55 Installation The installation and servicing of the equipment referred to in this booklet should be performed by qualified, experienced TIMER MODE FAN TIMER ON OFF Downloaded from www.Manualslib.com manuals search engine -41- - LG LP070HED1 | Service Manual - Page 42
wall thermostat is no longer desired. Figure 57 Escutcheon Installation The installation and servicing of the equipment referred to in this booklet should be performed by qualified, for appropriate voltage (Figure 61, next page). -42- Downloaded from www.Manualslib.com manuals search engine - LG LP070HED1 | Service Manual - Page 43
(Figure 59) 9. When installing optional accessories to the subbase, refer to each installation instruction for that accessory. Figure 58 Figure 60 - Dimensions Wall Sleeve (Outdoor Side) 13 Voltage Compartment 11(-31030/1m6m" ) Downloaded from www.Manualslib.com manuals search engine -43- - LG LP070HED1 | Service Manual - Page 44
385 LP150CED1 1 / 265 / 60 14000 5.8 1475 9.5 4.4 5.8 1475 - 420 355 450 385 LP070HED1 1 / 265 / 60 7300 2.5/2.2 630/550 11.6 2 6200 2.5/2.2 630/550 3.3 300 255 320 Btu/Hr Heating Watt Heating Amps LP070CED1 2.0 6800 2040 7.6 LP070HED1 2.0 6800 2040 7.6 LP090CED1 3.7 11900 3740 14.0 LP090HED1 - LG LP070HED1 | Service Manual - Page 45
Wattage-Air conditioners and Heat Pumps Model Temperature LP070CED1 LP090CED1 LP120CED1 LP150CED1 LP070HED1 LP090HED1 LP120HED1 LP150HED1 Outdoor Air Return Air Total Wattage Input Total Wattage 640 780 840 1095 1175 1505 1585 Downloaded from www.Manualslib.com manuals search engine -45- - LG LP070HED1 | Service Manual - Page 46
and Heat Pumps Model Room Air Room Air LP070CED1 LP090CED1 LP120CED1 LP150CED1 LP070HED1 LP090HED1 LP120HED1 LP150HED1 Dry Wet Temperature Across Temperature Across Temperature Across Temperature 17 21 22 24 20 22 18 21 17 21 Downloaded from www.Manualslib.com manuals search engine -46- - LG LP070HED1 | Service Manual - Page 47
85 50 75 65 85 45 75 65 85 40 75 65 LP070HED1 Temperature Across Indoor Coil ( T) Min Max 6100 6300 220 250 22 3.7 4.1 3.5 3.9 3.3 3.7 Model LP150HED1 Amperage Min Max 5.7 5.7 5.5 6.1 5.2 5.8 5 5.5 4.7 5.2 4.5 4.9 Downloaded from www.Manualslib.com manuals search engine -47- - LG LP070HED1 | Service Manual - Page 48
65 85 80 45 75 70 65 85 80 40 75 70 65 85 80 35 75 70 65 LP070HED1 Total Wattage Input Min Max 540 560 600 640 585 620 570 610 545 595 530 580 585 620 1230 1355 1200 1325 1180 1295 1150 1260 Downloaded from www.Manualslib.com manuals search engine -48- - LG LP070HED1 | Service Manual - Page 49
Point 47 42 37 32 27 24 Watts Outdoor Ambient 62 57 52 Rating Point 47 42 37 32 27 24 LP070HED1 265 2.2 550 6200 3.3 300 7200 6900 6500 6200 5900 5600 5300 5000 4800 580 575 555 550 540 525 1425 1405 1370 1335 1300 1265 1220 1180 1170 Downloaded from www.Manualslib.com manuals search engine -49- - LG LP070HED1 | Service Manual - Page 50
6. TROUBLESHOOTING GUIDE 6.1 OUTSIDE DIMENSIONS 1,066mm (42") 406mm (16") 505mm (20") 406mm (16") 6.2 PIPING SYSTEM Following is a brief description of the important components and their functions in the refrigeration system. Refer to Figure 63 to follow the refrigeration cycle and the flow of - LG LP070HED1 | Service Manual - Page 51
6.3 TROUBLESHOOTING GUIDE In general, possible trouble is classified in two causes. The one is Starting Failure which is caused from an electrical defect, and the other is Ineffective Air Conditioning caused by a defect in the refrigeration circuit and improper application. Unit is running but - LG LP070HED1 | Service Manual - Page 52
motor insulation ( ). Replacement of fan motor Irregular motor resistance ( ) Irregular motor insulation ( ) Replacement of compressor (Motor damaged) Downloaded from www.Manualslib.com manuals search engine -52- Regular but fails to start Replacement of compressor (locking of rotor, metal) - LG LP070HED1 | Service Manual - Page 53
or loose, replace the motor. If the motor hums or noise appears to be internal while running, replace motor. -53- Downloaded from www.Manualslib.com manuals search engine - LG LP070HED1 | Service Manual - Page 54
, but fan motor runs. CAUSE Voltage Wiring Rotary Thermostat Capacitor (Discharge capacitor before servicing.) Compressor Overload REMEDY Check voltage. See the limits on the preceding. page. If MINIMUM 265V 239V MAXIMUM 292V Downloaded from www.Manualslib.com manuals search engine -54- - LG LP070HED1 | Service Manual - Page 55
heating Excessive noise. Condenser fins (damaged) Capacitor Wiring Refrigerating system Air filter Exhaust damper door Unit undersized Cross flow missing, correct. If the blower or fan is hitting air guide, rearrange the air handling parts. Carefully rearrange tubing not to contact, compressor, shroud, - LG LP070HED1 | Service Manual - Page 56
/YL Type.2 INDOOR FAN MOTOR GN/YL BK BK BL RD RD OR OR BR BR YL YL P/NO:3850A20594H Downloaded from www.Manualslib.com manuals search engine CN-IDF CN-4WAY CN-ODF CN-ICR -56- - LG LP070HED1 | Service Manual - Page 57
E/SAVE FAN COOL HIGH MODE LOW FAN TIMER TIMER OFOFN 249941-1 W0CZZ-2 OFOFN 264110 249941-2 268711-4 W6640 W0CZZ 147910 -57- Downloaded from www.Manualslib.com manuals search engine 554170 567502 550140 - LG LP070HED1 | Service Manual - Page 58
E/SAVE FAN COOL HIGH MODE LOW FAN TIMER TIMER OFOFN 249941-1 W0CZZ-2 OFOFN 264110 249941-2 268711-4 W6640 W0CZZ 147910 -58- Downloaded from www.Manualslib.com manuals search engine 554170 567502 550140 - LG LP070HED1 | Service Manual - Page 59
P/No.: 3828A20308K Downloaded from www.Manualslib.com manuals search engine February, 2007 Printed in Korea
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LG
Packaged Terminal
Air Conditioner/Heat Pump
SERVICE MANUAL
LG
CAUTION
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
• FOR AUTHORIZED SERVICE ONLY.
Downloaded from
www.Manualslib.com
manuals search engine