Room air conditioner service manual models: hw500cmy8 caution website http://www.Lgservice.Com • beforeservicingtheunit,readthesafety precautionsinthismanual. • onlyforauthorizedservicepersonnel..
2 room air conditioner air conditioner service manual table of contents safety precautions..........................................................................................................................................3 dimensions ..............................................................
Service manual 3 safety precautions safety precautions to prevent injury to the user or other people and property damage, the following instructions must be followed. ■ incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indicatio...
4 room air conditioner safety precautions operation plug in the power plug properly. Otherwise, it will cause electric shock or fire. Do not operate or stop the unit by inserting or pulling out the power plug. It will cause electric shock or fire. Do not damage or use an unspecified power cord. It w...
Owner s manual 5 en gl ish safety precautions never touch the metal parts of the unit when removing the filter. They are sharp and may cause injury. Do not block the inlet or outlet. It may cause failure of appliance or performance deteriorate. Ensure that the outer case is not damaged by age or wea...
6 room air conditioner safety precautions unplug the air conditioner before cleaning it. Since the fan rotates at high speed during operation, it may cause injury. Do not put a pet or house plant where it will be exposed to direct air flow. This could injury the pet or plant. Do not use this applian...
Service manual 7 dimensions dimensions h d w w mm(inch) 439(17 5 / 16" ) h mm(inch) 283(11 1 / 8" ) d mm(inch) 326(12 13 / 16" ) model dimension all model outside dimensions this symbol alerts you to the risk of electric shock. This symbol alerts you to hazards that could cause harm to the air condi...
8 room air conditioner product specifications product specifications specifications are subject to minor change without notice for further improvement. Notice cooling capacity (btu/h) 5,000 power supply (phase, v, hz) 1ø, 115v, 60hz input (w) 515 operating current (amp.) 4.8 refrigerant control capi...
Service manual 9 window requirements all supporting parts should be secured to firm wood, masonry, or metal. 1. This unit is designed for installation in standard double hung windows with actual opening widths of 21" to 35". The upper and lower sash must open sufficiently to allow a clear vertical o...
10 room air conditioner installation installation kits contents(some models) before installation (some models including installation kit) 1. Insert the guide panels into the guides of the air conditioner. Fasten the curtains to the unit with screws (type a), as shown figure. 4. 2. Cut the adhesive-b...
Service manual 11 caution: during the following step, hold unit firmly until window sash is lowered to top channel behind side panel frames. Personal injury or property damage may result if unit falls from window. 3. Install the air conditioner in the window a. Carefully lift the air conditioner and...
12 room air conditioner operation feature insulation resistance test about the controls or the air conditioner • designed for cooling only • powerful and incredible cooling • top-down chassis for the simple installation and service • built-in adjustable thermostat • washable one-touch filter • compa...
Service manual 13 1. Front grille 1. Disconnect the unit from source of power. 2. Using a screwdriver, remove the screw from the front grille. (see figure 13) 3. Push the front grille up from the bottom. Pull the top of the front grille away from the cabinet as the top tabs lift out of their slots. ...
14 room air conditioner 4. Air guide upper 1. Disconnect the unit from the power source. 2. Remove the front grille. (refer to section 1) 3. Remove the cabinet. (refer to section 2) 4. Remove the control board. (refer to section 3) 5. Remove tape that attached the air guide upper and lower. 6. Lift ...
Service manual 15 disassembly 6. Motor 1. Disconnect the unit from the power source. 2. Remove the front grille. (refer to section 1) 3. Remove the cabinet. (refer to section 2) 4. Remove the control panel. (refer to section 3) 5. Remove the air guide upper. (refer to section 4) 6. Remove the compre...
16 room air conditioner disassembly 10. Capacitor 1. Remove the cabinet. (refer to section 2) 2. Remove the control panel. (refer to section 3) 3. Discharge the capacitor by placing a 20 k Ω resistor across the capacitor terminals. 4. Remove all the leads of capacitor terminals. 5. Re-install the co...
Service manual 17 disassembly 15. Evaporator 1. Remove the cabinet. (refer to section 2) 2. Discharge the refrigerant by using a refrigerant recovery system. 3. Remove the air guide upper. (refer to section 4) 4. After discharging the refrigerant completely, unbraze the interconnecting tube at the e...
18 room air conditioner disassembly 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 and service valve. B a b a b a compound gauge see insets below c...
Service manual 19 schematic diagram schematic diagram wiring diagram 5 1 2 6 7 3 4 power input wh(bl) switch(1) switch(2) hi bl lo bk rd bk bk gn/yl (gl) gn/yl (gl) rd or(br) or(br) bk rd bl yl capacitor f c h motor comp olp thermostar yl 2 2 3 r s c 1 1 (ribbed) • model: hblg5004, hblg5004t4 descri...
20 room air conditioner troubleshooting guide troubleshooting guide piping system following is a brief description of the important components and their function in what is called the refrigeration system. Reference should be made to figure 32 to follow the refrigerating cycle and the flow of the re...
Service manual 21 troubleshooting guide troubleshooting guide in general, possible trouble is classified in two kinds. The one is called starting failure which is caused by an electrical defect. The other is ineffective air conditioning caused by a defect in the refrigeration circuit and improper ap...
22 room air conditioner troubleshooting guide fails to start improper thermostat setting loose terminal connection improper wiring check of power source. Drop of power voltage. Capacitor check. Replacement. Check of control switch setting. Compressor fails only to start. Defect of compressor capacit...
Service manual 23 troubleshooting guide room air conditioner voltage limits name plate rating minimum maximum 115v ± 10% 103.5v 126.5v complaint cause remedy fan motor will not run. No power check voltage at outlet. Correct if none. Power supply cord check voltage to rotary switch. If none, check po...
24 room air conditioner troubleshooting guide complaint cause remedy fan motor noise. Tubo fan if cracked, out of balance, or partially missing, replace it. Axial fan if cracked, out of balance, or partially missing, replace it. Loose set screw tighten it. Worn bearings if knocking sounds continue w...
Service manual 25 troubleshooting guide complaint cause remedy compressor cycles on fan motor if not running, determine the cause. Replace if overload. Required. Condenser air flow remove the cabinet, inspect the interior surface restriction of the condenser. If restricted, clean carefully with a va...
26 room air conditioner exploded view exploded view b a e c d 266002-2 266002-1 149410 352115 349480 352113 35211a 567502 554160 550140 137215 w0czz 264110 354210 130410 w48602 148000 130910 359011 554030 159830 147582-1 147582-2 352380-1 352380-2 135312 249950 359012 149980 346811 731273 w48602 269...
P/no.: 3828a29003d february, 2005 printed in china.
