Service Manual
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website http://www.lgservice.com LG LG Room Air Conditioner SERVICE MANUAL MODEL: LWHD1800HR, LWHD2400HR LWHD1807HR, LWHD2400HRY7 CAUTION • BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. • ONLY FOR AUTHORIZED SERVICE PERSONNEL.
website http://www.lgservice.com LG LG Room Air Conditioner SERVICE MANUAL MODEL: LWHD1800HR, LWHD2400HR LWHD1807HR, LWHD2400HRY7 CAUTION • BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. • ONLY FOR AUTHORIZED SERVICE PERSONNEL.
Service Manual
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Air Conditioner Service Manual TABLE OF CONTENTS Safety Precautions...3 Dimensions...5 Product Specifications ...6 Installation ...8 How to Install the Unit ...8 How to use the Reversible Inlet grille ...8 Window Requirements ...9 Installation Kits ...
Air Conditioner Service Manual TABLE OF CONTENTS Safety Precautions...3 Dimensions...5 Product Specifications ...6 Installation ...8 How to Install the Unit ...8 How to use the Reversible Inlet grille ...8 Window Requirements ...9 Installation Kits ...
Service Manual
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...plugs, or a loose socket. The seriousness is risk of electric shock. CAUTION This symbol indicates the possibility of symbols used in this manual are as shown below. s Meanings of injury or damage to property only. s Installation WARNING Do not use the power plug and ...This symbol indicates the possibility of fire or electric shock. • There is classified by the following instructions must be followed. Service Manual 3 Be sure not to follow the instruction. Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage...
...plugs, or a loose socket. The seriousness is risk of electric shock. CAUTION This symbol indicates the possibility of symbols used in this manual are as shown below. s Meanings of injury or damage to property only. s Installation WARNING Do not use the power plug and ...This symbol indicates the possibility of fire or electric shock. • There is classified by the following instructions must be followed. Service Manual 3 Be sure not to follow the instruction. Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage...
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Dimensions Symbols Used in this Manual This symbol alerts you to hazards that could cause harm to the risk of electric shock. Outside Dimensions Dimensions D W H Dimension W H D Model mm(inch) mm(inch) mm(inch) LWHD1800HR 660 (26) 428 (16 27/32) 675 (26 9/16) LWHD2400HR 660 (26) 428 (16 27/32) 770 (30 5/16) Service Manual 5 NOTICE This symbol indicates special notes. This symbol alerts you to the air conditioner.
Dimensions Symbols Used in this Manual This symbol alerts you to hazards that could cause harm to the risk of electric shock. Outside Dimensions Dimensions D W H Dimension W H D Model mm(inch) mm(inch) mm(inch) LWHD1800HR 660 (26) 428 (16 27/32) 675 (26 9/16) LWHD2400HR 660 (26) 428 (16 27/32) 770 (30 5/16) Service Manual 5 NOTICE This symbol indicates special notes. This symbol alerts you to the air conditioner.
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..." above the floor level. 7. THE GRILLE IS ALREADY DESIGNED FOR THAT WAY. 30-60" Installation 1/4 Bubble Level AWNING FENCE HEAT RADIATION About 1/2" Over 20" b (a) (b) (c) Service Manual 8 INSTALLATION How to prevent air and insects from getting into the room. 8. Plastic hose or equivalent may be connected to an independent circuit. FOAM COOLED...
..." above the floor level. 7. THE GRILLE IS ALREADY DESIGNED FOR THAT WAY. 30-60" Installation 1/4 Bubble Level AWNING FENCE HEAT RADIATION About 1/2" Over 20" b (a) (b) (c) Service Manual 8 INSTALLATION How to prevent air and insects from getting into the room. 8. Plastic hose or equivalent may be connected to an independent circuit. FOAM COOLED...
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... to the unit with 3 screws (Type A). Attach the Top retainer bar onto the top of the cabinet. 7. Screw (Type A) Figure 4 Frame guide Screw(Type A) Service Manual 10 Figure 1 4. Insert the Frame guides into the Top retainer bar and Frame guides.
... to the unit with 3 screws (Type A). Attach the Top retainer bar onto the top of the cabinet. 7. Screw (Type A) Figure 4 Frame guide Screw(Type A) Service Manual 10 Figure 1 4. Insert the Frame guides into the Top retainer bar and Frame guides.
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.... 10) Figure 10 7. Window installation of the cabinet. Figure 14 Figure 15 Installation Screw(Type C) Power Cord Screw (Type A) Foam-Strip Window locking bracket Service Manual 12 Slide the unit into the tabs on the front of room air conditioner is now completed. Cut the Foam-strip to each window sash...
.... 10) Figure 10 7. Window installation of the cabinet. Figure 14 Figure 15 Installation Screw(Type C) Power Cord Screw (Type A) Foam-Strip Window locking bracket Service Manual 12 Slide the unit into the tabs on the front of room air conditioner is now completed. Cut the Foam-strip to each window sash...
Service Manual
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... means opening direction. 2. Before the following disassembly, power switch is set to the wiring diagram found on the control box.) Figure 17 Figure 18 Service Manual 14 Mechanical parts 1. Pull the base pan forward. Control box 1. Remove the screw which fastens the front grille. 3. Figure 16 3. Remove the front grille. (See... resistor across the capacitor terminals. 5. Pull the front grille from the right side. 4. Cabinet 1. Keep these for later use. 2. Disconnect two wire housings in this manual and on page 29~30 in the control box. 6.
... means opening direction. 2. Before the following disassembly, power switch is set to the wiring diagram found on the control box.) Figure 17 Figure 18 Service Manual 14 Mechanical parts 1. Pull the base pan forward. Control box 1. Remove the screw which fastens the front grille. 3. Figure 16 3. Remove the front grille. (See... resistor across the capacitor terminals. 5. Pull the front grille from the right side. 4. Cabinet 1. Keep these for later use. 2. Disconnect two wire housings in this manual and on page 29~30 in the control box. 6.
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... motor. 7. After purging the unit completely, unbraze the suction and discharge tubes at the compressor connections. 5. Figure 23 Figure 24 Figure 25 Figure 26 Service Manual 16 Remove the shroud. (See Fig. 24) 4. Remove the brace and shroud cover. (Refer to section 3) 3. Compressor 1. Leave the valve in control box. (Refer to...
... motor. 7. After purging the unit completely, unbraze the suction and discharge tubes at the compressor connections. 5. Figure 23 Figure 24 Figure 25 Figure 26 Service Manual 16 Remove the shroud. (See Fig. 24) 4. Remove the brace and shroud cover. (Refer to section 3) 3. Compressor 1. Leave the valve in control box. (Refer to...
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Unfold the control box. (Refer to the removal procedure, above. Figure 30 Service Manual 18 Re-install the components by referring to section 10) 3. SYNCHRONOUS MOTOR 1. Disconnect all the leads of the synchronous motor. 5. Remove the crankshaft. 4. Disassembly 13. Remove the control box. (Refer to section 3) 2. Remove the 2 screws which fasten the synchronous motor. (See Fig. 30) 6.
Unfold the control box. (Refer to the removal procedure, above. Figure 30 Service Manual 18 Re-install the components by referring to section 10) 3. SYNCHRONOUS MOTOR 1. Disconnect all the leads of the synchronous motor. 5. Remove the crankshaft. 4. Disassembly 13. Remove the control box. (Refer to section 3) 2. Remove the 2 screws which fasten the synchronous motor. (See Fig. 30) 6.
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... to drop. See Fig. 35B. If the total charge cannot be put in Fig. 35B. a. d. Repeat steps B and C until 600 microns of the charge. Service Manual 20 Evacuate as follows. 1) Connect the vacuum pump, as shown in the suction line through valves A and B up to the pinch-off connection. This will...
... to drop. See Fig. 35B. If the total charge cannot be put in Fig. 35B. a. d. Repeat steps B and C until 600 microns of the charge. Service Manual 20 Evacuate as follows. 1) Connect the vacuum pump, as shown in the suction line through valves A and B up to the pinch-off connection. This will...
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Schematic Diagram Wiring Diagram s ELECTRIC HEATING MODEL Schematic Diagram Service Manual 22
Schematic Diagram Wiring Diagram s ELECTRIC HEATING MODEL Schematic Diagram Service Manual 22
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Ineffective Cooling Check cold air circulation for smooth flow. Check heat load increase. Service Manual 24 Dirty indoor coil (Heat exchanger) Malfunction of fan Clogged of refrigerant charged. Check clogging in two kinds. Troubleshooting Guide Troubleshooting Guide In general, possible ...
Ineffective Cooling Check cold air circulation for smooth flow. Check heat load increase. Service Manual 24 Dirty indoor coil (Heat exchanger) Malfunction of fan Clogged of refrigerant charged. Check clogging in two kinds. Troubleshooting Guide Troubleshooting Guide In general, possible ...
Service Manual
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... circuit is open. Test capacitor. Realign assembly. If it . Pay attention to be internal while running or loose, replace the motor. Check wire locations. Service Manual 26 If none, check power supply cord. Repair or replace loose terminal. If not, replace fan motor. If cracked, out of balance, or partially missing...
... circuit is open. Test capacitor. Realign assembly. If it . Pay attention to be internal while running or loose, replace the motor. Check wire locations. Service Manual 26 If none, check power supply cord. Repair or replace loose terminal. If not, replace fan motor. If cracked, out of balance, or partially missing...
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Exploded View 130910 Exploded View 148000 135500 554031 749750 135515 749740 731273 346811 W48602 559011 149980 130410 354210 359012 349600 W48602 349001 147582 135312 135314 159830 264110 567480 268711-1 137215 238310 268711-2 554160 249950 W0CZZ 550140 552102 352115-2 352113 352115-1 352111 146812 35211A 753010 147581-2 147581-1 267110 135510 753000 Service Manual 28
Exploded View 130910 Exploded View 148000 135500 554031 749750 135515 749740 731273 346811 W48602 559011 149980 130410 354210 359012 349600 W48602 349001 147582 135312 135314 159830 264110 567480 268711-1 137215 238310 268711-2 554160 249950 W0CZZ 550140 552102 352115-2 352113 352115-1 352111 146812 35211A 753010 147581-2 147581-1 267110 135510 753000 Service Manual 28