LG Room Air Conditioner - ApplianceAssistant.com
Contents
1. 15 AUHandling 16 Electrical allein in ortis dif cur sedet dn 17 Refrigerating CY CIS t 19 Schematic Dlg Be 22 Mana 22 Troubleshooting Guide eaaa ere etos 23 Piping System m 23 Troubleshooting UIA oo siot en e EE 24 Room Air Conditioner Voltage LimMits cider n utetur sud Aka ente 26 EXPlO DOO VICW m 28 Replacement nri et tere tt tite tte utes dn A Id mies 29 2 Hoom Air Conditioner 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 indications AWARNING This symbol indicates the possibility of death or serious injury ACAUTION This symbol indicates the possibility of injury or damage to property only E Meanings of symbols used in this manual are as shown below Q Be sure not to do Be sure to follow the instruction2. AWARNING Installation Do not use damaged power cord plugs or a Always use the power plug and socket with loose socket the ground terminal There is risk of fire or electric shock There is risk of electric shock Service Manual 3 Safety Precautions Do not modify or extend the power cord Do not install remove or re install the unit by yourself customer There is risk or fire or electric shock There is risk of fire electric shock explosion or injury Be cautious when unpacking and installing Do not store or use flammable gas or com the product bustibles near the air conditioner Sharp edges could cause injury Be especially careful There is risk of fire or failure of product of the case edges and the fins on the condenser and evaporator Be sure the installation area does not deterio rate with age f the base collapses the air conditioner could fall with it causing property damage product failure and per sonal injury 4 Hoom Air Conditioner B Dimensions Symbols Us A This symbol alerts you to the risk of electric shock Dimensions This symbol alerts you to hazards that could cause harm to the A air conditioner This symbol indicates special notes Model LWHD7000HR LWHD1200HR Dimension
3. website http www lgservice co LG LG Room Air Conditioner SERVICE MANUAL MODEL LWHD7000HR LWHD1200HR NIT READ THE SAFETY ANUAL D SERVICE PERSONNEL Air Conditioner Service Manual TABLE OF CONTENTS Safety Prec tions D aai 3 Dimensions me PH 5 Symbils Used in this Manual soie cete recepte e SU xri a ores Reale eee eet die e 5 Outside ee deel 5 Product Specifications 5 ioc ead ngoai bout EE aa bee tete Gore une eec 6 Installallol e ened oe ter 5 E UK MM iud 7 Sele tthe Best Location s soot dota ded taedis Lupe 7 7 How to Secure the Drain Pipe When using drain How to lnstall Models without Installation Kit tie ce met reed eite 8 How to Install Models with Installation Kit esee 9 Suggested Tool Bequiremehls x a2 ches cases qe Eee ed Rice pre astute ate edet e cae 11 jor MMC MEE A 14 14 Control Locations Function of Controls autetn tte tt dubie aie elie 14 Disassembly mpeni iint od a a debuts hif Aat eq eer 15 Mechanical PAIS
4. Turn off the unit allow it to set for a while and then test the leak age of the pinch off connection Disassembly Equipment needed Vacuum pump Charging cylinder Manifold gauge Brazing equipment Pin off tool capable of making a leak proof seal Leak detector Tubing cutter Hand Tools to remove components Service valve CONDENSER COMPOUND EMEN HIGH PRESSURE SIDE O O MANIFOLD GAUGE B CAPILLARY TUBE SEE INSETS BELOW EVAPORATOR LOW PRESSURE SIDE COMPRESSOR EXTERNAL VACUUM PUMP CHARGING CYLINDER Figure 31A Pulling Vacuum Figure 31B Charging Service Manual 21 Schematic Diagram Schematic Diagram E ELECTRIC HEATING MODEL POWER INPUT WH B K Ribbed THERMISTOR BK BR Plain GN YL GN DISPLAY P W B ASSY MAIN P W B ASSY OR BR RY SYNC mo TRANS ZNR ge ER FUSE 250V T2A SIGNAL 250 72 115V T2A CN SIGNAL 9 76 SUB P W B ASSY FUSE LINK HEATER BK RD OL O O uO BI METAL BK RD THERMOSTAT WIRING DIAGRAM 3854A20268w 22 Hoom Air Conditioner Troubl
5. mm inch 470 18 2 600 23 8 H mm inch 353 13 s 380 14 21 22 D mm inch 525 22 16 567 22 5 6 Service Manual 5 Specfications Product Specifications MODELS ITEMS LWHD7000HR LWHD1200HR POWER SUPPLY 19 115V 60Hz 16 208 230V 60Hz COOLING CAPACITY Btu h 7 000 11 500 12 000 INPUT W 720 1 170 1 220 RUNNING CURRENT 6 6 5 5 5 8 E E R BTU W h 9 7 9 8 HEATING CAPACITY Btu h 3850 9 200 11 200 INPUT W 1260 2 900 3 500 RUNNING CURRENT A 11 0 14 0 15 3 TT INDOOR C 26 7 DB 19 4 WB OPERATING OUTDOOR C 35 DB 23 9 WB CONDITION mane INDOOR C 21 1 DB 15 6 DB OUTDOOR C 8 3 DB 6 1 DB REFRIGERANT R 22 CHARGE 330 11 6 oz 545 19 2 oz EVAPORATOR 2ROW 16STACKS 2ROW 13STACKS CONDENSER 2ROW 16STACKS 2ROW 17STACKS FAN INDOOR BLOWER FAN OUTDOOR PROPELLER TYPE FAN WITH SLINGER RING FAN SPEEDS FAN COOLING HEATING 1 2 2 1 2 2 FAN MOTOR 4 POLES 6 POLES OPERATION CONTROL TOUCH PANEL ROOM TEMP CONTROL THERMISTOR AIR DIRECTION CONTROL VERTICAL LOUVER RIGHT amp LEFT HORIZONTAL LOUVER UP amp DOWN CONSTRUCTION SLIDE IN OUT CHASSIS ELECTRIC HEATER 1 2KW 115 3 5KW 230V COMPRESSOR OVERLOAD PROTECTOR PROTECTOR FAN MOTOR INTERNAL THERMAL PROTECTOR ELECTRIC HEATER FUSE LINK BIMETAL THERMOSTAT POWER CORD 6m 3
6. 4 Remove the hose from the vacuum pump and place it on the charging cylinder See figure 31B Open valve C Discharge the line at the manifold connection 5 The system is now reagy for final charging 20 Hoom Air Conditioner 3 Remove the capillary tube 4 Re install the component by referring to notes 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 fig ure 31B With valve C open discharge the hose at the manifold connection 3 Open valve A and allow the proper charge to enter the system Valve B is still closed 4 If more charge is required the high side will not take it Close valve A 5 With the unit running open valve B and add the balance of the charge a Do not add the liquid refrigerant to the Low side b Watch the Low side gauge allow pressure to rise to 30 Ibs Turn off valve B and allow pressure to drop d Repeat steps b and c until the balance of the charge is in the system 6 When satisfied the unit is operating correctly use the pinch off tool with the unit still running and clamp on to the pinch off tube Using a tube cutter cut the pinch off tube about 2 inches from the pinch off tool Use sil fos braze and braze pinch off tube closed
7. Check cold air circulation Check outdoor coil for smooth flow heat exchanger amp the fan operation Dirty indoor coil Check gas leakage Heat exchanger Unit runs but poor cooling Check heat load increase Not on separate circuit Malfunction of fan nepar gas leak Clogged of air filter Obstruction at air outlet Check inside gas Replacement of unit if the pressure unit is beyond repair Adjusting of refrigerant charged Correct above trouble Malfunction of compressor Check clogging in refrigera Replacement of tion circuit compressor Satisfactory operation with Repair clogging in refrigera temperature difference of tion circuit inlet amp outlet air 44 50 F 7 10 C 24 Room Air Conditioner Troubleshooting Guide Fails to Start Check circuit breaker and fuse Check of power source Check of control switch Gas leakage of feeler bulb setting of thermostat Check of control switch Fan only fails to start Improper wiring Compressor only fails to start Drop of power voltage a Improper thermostat setting Defect of fan motor Defect of compressor capacitor capacitor Loose terminal connection Irregular motor resistance Q Irregular motor insulation Q Replacement of fan motor Capacitor check Improper wiring Replacement lt Irregular motor resistance Q Regu
8. WIRE WITH GROUNDING ATTACHMENT PLUG CORD CONNECTED TYPE DRAIN SYSTEM DRAIN PIPE OR SPLASHED BY FAN SLINGER NET WEIGHT Ibs kg 64 29 97 44 OUTSIDE DIMENSION inch 18 X 13 7 8 X 20 11 16 23 5 8 X 14 31 22 X 22 5 16 WxHxD mm 470 X 353 X 525 600 X 380 X 567 DB Dry Bulb WB Wet Bulb NOTE Please refer to Label Quality on the produst since this specification may be changed for improving performance 6 Hoom Air Conditioner Installation Installation Select the Besi 1 To prevent vibration and noise make sure the unit is installed securely and firmly 2 Install the unit where the sunlight does not shine directly on the unit 3 The outside of the cabinet must extend outward for at least 12 and there should be no obstacles such as a COOLED AIR fence or wall within 20 from the back of the cabinet because it will prevent heat radiation of the condenser Restriction of outside air will greatly reduce the cooling efficiency of the air conditioner AWNING PENGE HEAT RADIATION Sen E ABOUT 1 2 CAUTION AII side louvers of the cabinet 4 Over 20 must remain exposed to the outside of the structure Figure 1 4 Install the unit a little slanted so the back is slightly lower than the front about 2 This will help force condensed water to the outside 5 Install the unit from the bottom about 30 60 above the floor level The setting conditions must be checked prior
9. 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 Fan motor noise Fan If cracked out of balance or partially missing replace it Blower If cracked out of balance or partially missing replace it Loose clamper Tighten it Worn bearings If knocking sounds continue when running or loose replace the motor If the motor hums or noise appears to be internal while running replace motor Compressor will not run but fan motor runs Voltage Check voltage If not within limits call an electrician Wiring Check the wire connections if loose repair or replace the terminal If wires are off refer to wiring diagram for identification and replace Check wire locations If not per wiring diagram correct Rotary Check for continuity refer to the wiring diagram for terminal identification Replace the switch if circuit is open 26 Hoom Air Conditioner Troubleshooting Guide COMPLAINT CAUSE REMEDY Compressor will not run but fan motor runs Thermostat Check the position of knob If not at the coldest set ting advance the knob to this setting and restart unit Check continuity of the thermostat Replace ther mostat if circuit is open Capacitor Discharge capacitor before
10. as a Watco A 1 before venting the Freon Leave the valve in place after servicing the system 3 Remove the overload protector Refer to sec tion 7 4 After purging the unit completely unbraze the suction and discharge tubes at the compressor connections 5 Remove the 3 nuts and the 3 washers that fasten the compressor 6 Remove the compressor See Figure 23 7 Re install the components by referring to the removal procedure above Figure 22 Figure 23 Service Manual 17 Disassembly 9 Capacitor 1 Remove the control box Refer to section 3 2 Remove the knobs and the screw that fasten control panel from control box 3 Remove the screw that located in the front Open the bottom side of control box 5 Remove the screw and the clamp that fastens the capacitor 6 Disconnect all the leads of capacitor terminals 7 Re install the components by referring to the removal procedure above See Figure 24 A 10 Power Cord Remove the control box Refer to section 3 2 Open the control box Refer to section 9 3 Disconnect the grounding screw from the control box 4 Disconnect the 2 receptacles 5 Remove a screw which fastens the clip cord See Figure 25 6 Remove the power cord 7 Re install the component by referring to the above removal procedure above Use only one ground marked hole for ground connection 8 If the supply cord of this ap
11. in 5 Discharge the capacitor by placing a 20 000 ohm resistor across the capacitor terminals 6 Remove the 2 screws that fasten the control box HHHH HAHAHAH HHH a HHHH yy Jt E 5 EF HAH HHH HHHH HHHH HH HHHH ELEEEEHEHL ERXERERXEREHEdE 7 Pull the control box forward completely s 8 Re install the components by referring to the removal bi procedure above See Figure 16 Refer to the circuit diagram found on page 23 in this manual and on the control box Figure 16 Service Manual 15 Disassembly 10 4 Air Guide and Turbo Fan Remove the front grille Refer to section 1 Remove the cabinet Refer to section 2 Remove the control box Refer to section 3 Remove the 4 screws that fasten the brace Remove the brace Remove the 2 screws that fasten the evaporator Move the evaporator forward and pulling it upward slightly See Figure 17 Move the evaporator to the left carefully Remove the 2 terminals carefully See Figure 18 at Electric heater Model Remove the 3 screws that fasten the Heater Cover See Figure 18 at Electric Heater Model 11 Remove the Heater cover See Figure 18 at Electric Heater Model 12 Pull out the hook of orifice by pushing the tabs and remove it See Figure 19 13 Remove the clamp with a hand plier that secures the blower 14 Remove the blower 15 Remove the 4 screws tha
12. intake side cooled air discharge VENTILATION The ventilation lever must be in the CLOSE position in order to maintain the best cooling conditions When a fresh air is necessary in the room set the ven tilation lever to the OPEN position The damper is opened and room air is exhausted POWER BUTTON To turn the air conditioner ON push the button To turn the air conditioner OFF push the button again This button takes priority over any other buttons OPERATION MODE SELECTION BUTTON Everytime you push this button it will toggle COOL FAN and HEAT ON OFF TIMER BUTTON Everytime you push this button timer is set as follows 1Hour gt 2Hours 3Hours 4Hours 5Hours gt 6Hours gt 7Hours 8Hours gt 9Hours gt 10Hours gt 11Hours gt 12Hours gt Cancel FAN SPEED SELECTOR Everytime you push this button it is set as follows Fe 2 Low 3 Hi Fe ROOM TEMPERATURE SETTING BUTTON This button can automatically control the temperature of the room The temperature can be set within a range of 60 F to 86 F by 1 ENERGY SAVER The fan stops when the compressor stops cooling Approximately every 3 munutes the fan will turn on and check the room air to determine if cooling is needed REMOCON SIGNAL RECEIVER AUTO SWING This button can automatically control the air flow direction A c o come from the unit when first switching to HEAT after th
13. servicing Check the capacitor Replace if not within 10 of manufacturers rat ing Replace if shorted open or damaged Compressor Check the compressor for open circuit or ground If open or grounded replace the compressor Overload Check the compressor overload if externally mounted Replace if open If the compressor tem perature is high remove the overload cool it and retest Compressor cycles on overload Voltage Check the voltage If not within limits call an electrician Overload Check overload if externally mounted Replace if open If the compressor temperature is high remove the overload cool and retest Compressor cycles on overload Fan motor If not running determine the cause Replace if required Condenser air flow restric tion Remove the cabinet inspect the interior surface of the condenser if restricted clean carefully with a vacuum cleaner do not damage fins or brush Clean the interior base before reassembling Condenser fins damaged If condenser fins are closed over a large area on the coil surface head pressures will increase causing the compressor to overload Straighten the fins or replace the coil Compressor cycles on overload Capacitor Test capacitor Wiring Check the terminals If loose repair or replace Refrigerating system Check the system for a restriction Insufficient cooling or heat
14. to initial starting The following items are especially important checking points when the installation is finished 1 Grounding wire Green or Green and Yellow is provided in the power cord The green wire must be grounded 2 Connect to a single outlet 15A circuit or 20A circuit for Electric Heater Model 3 To avoid vibration or noise make sure the air conditioner is installed securely 4 Avoid placing furniture or draperies in front of the air inlet and outlet Push In humid weather excess water may cause the BASE PAN to overflow To drain i the water remove the DRAIN CAP and secure the DRAIN PIPE to the rear hole of f the BASE PAN Press the drain pipe into the hole by pushing down and away from P i Pipe rf the fins to avoid injury Drain cap Optional 1 Install the drain pan over the corner of the cabinet where you removed the CABINET T 1 T screw plug with 4 or 2 screws 2 Connect the drain hose to the outlet located at the bottom of the drain pan Fig 1 You can purchase the drain hose or tubing locally to satisfy your particular BRAN DRAIN HOSE needs Drain hose is not supplied 3 Select the most appropriate connection from among the following figures considering the hole of the unit to fit drain pan to your own unit Service Manual 7 Installation How to Install M 1 Remove the screws that fasten the cabinet at both sides and at the back 2 Slide th
15. tube See caution above NOTICE Replacement of the refrigeration cycle 1 When replacing the refrigeration cycle be sure to Discharge the refrigerant system using a Freon recovery System If there is no valve to attach the recovery system install one such as a WATCO A 1 before venting the Freon Leave the valve in place after Servicing the system 2 After discharging the unit completely remove the desired component and unbraze the pinch off tubes 3 Solder service valves into the pinch off tube ports leaving the valves open 4 Solder the pinch off tubes with Service valves 5 Evacuate as follows 1 Connect the vacuum pump as illustrated figure 31A 2 Start the vacuum pump slowly open manifold valves A and B with two full turns counterclock wise and leave the valves open The vacuum pump is now pulling through valves A and B up to valve C by means of the manifold and entire system CAUTION If high vacuum equip ment is used just crack valves A and B for a few minutes then open slowly with the two full turns counterclockwise This will keep oil from foaming and being drawn into the vacuum pump 3 Operate the vacuum pump vaccum for 20 to 30 minutes until 600 microns of vaccum is obtained Close valves A and B and observe vacuum gauge for a few minutes A rise in pressure would indicate a possible leak or moisture remaining in the system With valves A and B closed stop the vacuum pump
16. 00AR1167B 5900AR1173A R 567502 O L P 6750U L005A 6750U L058A R 753000 HEATER ELECTRIC 5300A20003B 5300A20003A R 753010 HEATER ASSEMBLY ELECTRIC 5301A20013A 5301AR7267B R WOCZZ CAPACITOR DRAWING 6120AR2359V 6120AR2194D R W48602 CLAMP SPRING 3H02932B 3H02932B R W52106 1 TUBE EVAPORATOR 5210A30647C 5210AR4373B R W52106 2 TUBE EVAPORATOR 5210A30647D 5210AR7090B R Service Manual 29 2006 3828 20841 Printed in Korea
17. 8 min Without frame curtain NO NAME OF PARTS Q TY 1 FRAME CURTAIN 2 2 SILL SUPPORT 2 3 BOLT 2 4 NUT 2 5 SCREW TYPE 10mm s 16 6 SCREW TYPE B 05 1mmio 2 y 16mm 0 63 3 7 SCREW TYPE C p4 1mmo 7y1emmossy 5 8 FOAM STRIP 1 9 FOAM PE 920mm x 30mm x 2mm 1 10 UPPER GUIDE 1 11 FOAM PE 600mm x 25mm x 2mm 1 12 FRAME GUIDE 2 13 WINDOW LOCKING BRACKET 1 14 DRAIN PIPE 1 Top retainer bar is in the product package Service Manual 9 Installation LWHD7000HR RIGHT SIDE HORIZONTAL LINE 1 WINDOW WIDTH A HEIGHT B 4 DETAILS 5 1 x 30 ROUND HEAD WOOD 2 GASKET SCREWS 3 WALL A B C D E F G H J K 495mm 366mm 250mm 30mm 0 25mm OVER 420mm 12mm 32mm 5 10mm 0 5mm 191 2 147 16 10 11 16 O 1 OVER 1617 32 1 2 11 4 3 16 3 s O 3 16 A When Using Installation Kits 5 1 Window Requirements 22 to 36 This unit is designed for installation in 15 min standard double hung windows with actual opening With frame curtain widths from 22 to 36 The top and bottom window sash must open suffi ciently to allow a clear vertical opening of 15 from the bottom of the upper sash to the window stool Stool 7 Offset e 1 2 to 11 4 Sill Interi
18. 82 LOUVER VERTICAL 4758A30008A 4758AR7308A R 148000 BRACE 4800A30001A 4810AR7029A R 149980 SHROUD 4998A10001A 4998AR1496A R 152302 FILTER MECH A C 5231A20004A 5231AR1152A R 237200 PANEL CONTROL 3720A20053A 3720A10003A R 238310 ESCUTCHEON 3831A20124A 3831A20093D R 249950 CONTROL BOX ASSEMBLY SINGLE 4995A20392T 4995A23005K R 264110 POWER CORD ASSEMBLY 6411A20048F 6411A20048L R 263230 THERMISTOR ASSEMBLY 6323A20003D 6323A20003D R 268712 PWB PCB ASSEMBLY DISPLAY 6871A20189S 6871A20195U R 268714 PWB PCB ASSEMBLY MAIN AC 6871A10188B 6871A10003A R 267110 REMOTE CONTROLLER 6711A20034E 6711A20034E R 346811 MOTOR ASSEMBLY AC 4681A20027A 4681A20009M R 349001 DAMPER VENTILATION 4901A30001A 4900AR7024B R 349480 ORIFICE 4948A20016A 4948A20016A R 349600 MOUNT MOTOR 4960A20002A 4960AR6165A R 352111 TUBE ASSEMBLY CONNECTOR 5211A30260D 5211AR7059A R 352113 TUBE ASSEMBLY DISCHARGE SINGLE 5210A20119D 5211AR2930A R 35211A TUBE ASSEMBLY SUCTION SINGLE 5211A20130A 5211AR6081K R 352390 AIR GUIDE ASSEMBLY 5239A30002N 5239AR1523U R 354210 EVAPORATOR ASSEMBLY FIRST 5421A20036C 5421AR2912C R 359012 FAN ASSEMBLY BLOWER 5901A10005B 5834AR1495B R 550140 ISOLATOR COMP 5040AR4195A 4H00982C R 552101 TUBE CAPILLARY 3H01535T 3H01535V R 552206 VALVE DRAIN 5220A30006A 5220A30006A R 554030 CONDENSER ASSEMBLY FIRST 5403A20024B 5403AR2921A R 554160 COMPRESSOR 2520UAEC2DA 2520UCDK020 R 559010 FAN ASSEMBLY AXIAL 59
19. CAUTION Discharge the refrigerant system using a Freon Recovery System If there is no valve to attach the ns recovery system install one such as a Leave the valve in place after servicing oly LA WATCO 1 before venting the Freon the system SK 14 Condenser 1 Remove the cabinet Refer to section 2 2 Remove the 4 screws that fasten the brace Refer to section 4 3 Remove the 5 screws that fasten the condenser and shroud 4 After discharging the refrigerant completely unbraze the interconnecting tube at the con denser connections 5 Remove the condenser 6 Re install the component by referring to notes See Figure 29 Figure 29 15 Evaporator 1 Remove the cabinet Refer to section 2 2 Remove the 2 screws that fasten the evaporator 3 Move the evaporator sideways carefully Refer to section 4 4 After discharging the refrigerant completely unbraze the interconnecting tube at the evapo rator connections 5 Remove the evaporator 6 Re install the component by referring to notes See Figure 30 Figure 30 Service Manual 19 Disassembly 16 Capillary Tube 1 Remove the cabinet Refer to section 2 2 After discharging the refrigerant completely unbraze the interconnecting tube at the capil lary
20. e cooling CAUTION A slight heat odor may season is over This odor caused by fine dust particles on the heater will disappear quickly 14 Hoom Air Conditioner Built in adjustable THERMOSTAT Washable one touch filter Compact size Reliable and efficient rotary compressor gt CLOSE VENT alls OPEN FAN SPEED ENERGY TIMER ER n O LWHD1200HR REMOTE CONTROLLER LWHD1200HR LWHD7000HR Disassembly Disassembly Before the following disassembly CONTROL BOX set to OFF and disconnect the power cord Mechanical Par 1 Front Grille 1 Open the Inlet grille upward 2 Remove the screw that fastens the front grille 3 Pull the front grille from the right side 4 Remove the front grille 5 Re install the component by referring to the removal procedure above See Figure 14 2 Cabinet 1 After disassembling the FRONT GRILLE remove the 2 screws that fasten the cabinet at both sides 2 Remove the 2 screws that fasten the cabinet at back 3 Pull the base pan forward See Figure 15 4 Remove the cabinet 5 Re install the component by referring to the removal procedure above 3 Control Box Figure 15 1 Remove the front grille Refer to section 1 2 Remove the cabinet Refer to section 2 3 Remove the 2 screws that fasten the control box cover 4 Remove two housings that connect compressor wire i and motor wire in the control box
21. e unit from the cabinet by gripping the base pan handle and pulling forward while bracing the cabinet 3 Remove EPS Material 4 Slide the unit into the cabinet CAUTION For security pur pose reinstall screw at cabi net s sides 5 Attach the front grille to the cabinet by inserting the tabs on the grille into the tabs on the fornt of the cabinet Push the grille in until it snaps into place 6 Lift the inlet grille and secure it with a screw through the front grille 8 Room Air Conditioner Shipping screws EPS Material Power cord Installation When Using Gasket LWHD1200HR RIGHT SIDE HORIZONTAL LINE 1 WINDOW WIDTH A HEIGHT B 4 DETAILS 5 1 x 30 ROUND HEAD WOOD 2 GASKET SCREWS 3 WALL A B C D E F H 625mm 392mm 280mm 30mm 025mm OVER 420mm 5 10mm 5 5mm 245 s 157 16 11 1 32 11 16 0 1 OVER 1617 2 3 16 3 3 16 3 16 When Using Installation Kits 1 Window Requirements This unit is designed for installation in standard double hung windows with actual opening widths from 27 to 39 The top and bottom window sash must open suffi ciently to allow a clear vertical opening of 16 from the bottom of the upper sash to the window stool Offset SE 1 2 to 1 4 Sill Interior wall T Exterior 2 Installation Kits Contents 235
22. eshooting Guide Troubleshooting Guide CONDENSER COIL FAN CAPILLARY TUBE MOTOR COMPRESSOR BLOWER EVAPORATOR COIL Figure 32 is a brief description of the important components and their function in what is called the refrigeration system This will help you to understand the refrigeration cycle and the flow of the refrigerant in the cooling cycle ROOM AIR CONITIONER CYCLE OF REFRIGERATION EVAPORATOR COILS CONDENSER COILS COMPLETE LIQUID SUGTION LINE HOT BOIL OFF POINT FOOL LOW FRESSURE VAROR DISCHARGED AIR RES OQ DUO UU UU eT 4 Ba ROOM AIR HEAT LOAD 48 He OUTSIDE COOLING lt AIR FOR REFRIGERANT PASS THROUGH lt COMPRESSOR on 00 LIQUID PRESSURE LIQUID OUTLET DROP 3 CO 777 HIGH PRESSURE VAPOR CAPILLARY TUBE REFRIGERANT BE Low PRESSURE VAPOR Figure 32 Service Manual 23 Troubleshooting Guide In general possible trouble is classified in two kinds The one is called 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 Ineffective Cooling
23. et 8 Insert the Frame Curtain into the upper guide and frame guides 2 9 Fasten the curtains to the unit with 4 Type A screws at the both sides d EPS Material Cabinet Installation 1 Open the window Mark a line on center of the win dow stool or desired air conditioner location Carefully place the cabinet on the window stool and align the center mark on the bottom front with the center line marked in the window stool 2 Pull the bottom window sash down behind the upper guide until it meets Do not pull the window sash down so tightly that the movement of Frame Curtain is restricted MU Window B igure Figure 3 Service Manual 11 Installation 3 Loosely assemble the sill support using the parts in Figure 4 4 Select the position that will place the sill support near the outer most point on sill See Figure 4 Be careful when you install the cabinet Frame Guides are broken easily 5 Attach the sill support to the cabinet track hole in relation to the selected position using 2 Type A screws in each support See Figure 5 6 The cabinet should be installed with a very slight tilt about 1 2 downward toward the outside See Figure 6 Adjust the bolt and the nut of Sill Support for bal ancing the cabinet 7 Attach the cabinet to the window stool by driving the screws Type B through the front angle into window stool 5 8 8 Pull each Frame Curtain properly to each wi
24. ing Air filter If restricted clean of replace Exhaust damper door Close if open Unit undersized Determine if the unit is properly sized for the area to be cooled Excessive noise Blower or fan Check the set screw or clamp If loose or missing correct If the blower or fan is hitting air guide rearrange the air handling parts Copper tubing Remove the cabinet carefully and rearrange tubing not to contact cabinet compressor shroud and barrier Auto air swing fails Rotary switch Set the knob to HIGH COOL or LOW COOL while rocker switch is ON Wiring Check terminals If loose repair or replace Synchronous motor Check the synchronous motor for open circuit Service Manual 27 Exploded View Exploded View 28 Room Air Conditioner Replacement Parts List Replacement Parts List LOCATION PART NO NO PERPA UON LWHD7000HR LWHD1200HR batis 130410 BASE ASSEMBLY SINGLE 3041A30005V 3041AR1524T R 130910 CABINET ASSEMBLY SINGLE 3091A10069B 3091A10032Z R 135312 GRILLE ASSEMBLY FRONT SINGLE 3531A10128C 3531A20136E R 135313 GRILLE ASSEMBLY INLET 3530A10027A 3530AR1634A R 135500 COVER 3550A20115A 3550AR7032A R 147581 LOUVER HORIZONTAL 4758A20002D 5990AR6191B R 1475
25. lar but fails to start Irregular motor insulation Replacement of compressor locking of rotor metal Replacement of compressor Motor damaged Service Manual 25 Troubleshooting Guide Room Air C NAME PLATE RATING MINIMUM MAXIMUM 208 230 1096 187V 253V 115 10 104V 126V COMPLAINT CAUSE REMEDY Fan motor will not run No power Check voltage at outlet Correct if necessary Power supply cord Check voltage to rotary switch If none check power supply cord Replace cord if circuit is open Rotary switch Check switch continuity Refer to wiring diagram for terminal identification Replace switch if defective Wire disconnected or con nection loose Connect wire Refer to wiring diagram for terminal identification Repair or replace loose terminal Capacitor Discharge capacitor before testing Test capacitor Replace if not within 10 of manufacturer s rating Replace if shorted open or damaged Will not rotate Fan blade hitting shroud or blower wheel hitting scroll Realign assembly Units using slinger ring for condenser fan must have 1 4 to 5 16 inch clearance to the base If it hits the base shim up the bottom of the fan motor with mounting screw s Check fan motor bearings if motor shaft will not rotate replace the motor Fan motor runs intermittently Revolves on overload Check voltage If not within limits call
26. ndow sash track and repeat step 2 9 Attach each Frame Curtain to the window sash by using screws 7 Type C See Figure 7 12 Hoom Air Conditioner INDOOR OUTDOOR Sill Support 2 Nut Bolt 3 Figure 4 2 Frame Guide G Screw Type A y d INDOOR OUTDOOR About 1 2 Figure 5 Screw Type B 6 Sew A 5 e ex m 2 2 lt Screw Type 6 Sill support Figure 6 Figure 7 10 Slide the unit into the cabinet See Fig 8 CAUTION For security purpose reinstall screws Type A at the cabinet s sides Screw Type A 11 Cut the Foam Strip amp to the proper length and insert between the upper and lower window sash See Fig 9 12 Attach the window Locking Bracket 3 with a type C screw See Fig 10 13 Attach the front grille to the cabinet by inserting the tabs on the grille into the tabs on the front of the cab inet Push the grille in until it snaps into place See Fig 11 Installation Power cord e Screw Type A Figure 8 Foam Strip Figure 9 Figure 10 14 Lift the inlet grille and secure it with a type A screw through the front grille See Fig 12 Figure 13 Service Manual 13 Operation GET Designed for COOLING and HEATING Powerful and whispering cooling Slide in and slide out chassis for the simple instal lation and service Side air
27. or wall Exterior 181 2 min 2 Installation Kits Contents Without frame curtain NAME OF PARTS FRAME CURTAIN SILL SUPPORT BOLT NUT SCREW TYPE A 10mm s SCREW TYPE B 05 1mm o 2 y 16mm o 63 SCREW TYPE C p4 1mm o 17 y 16mm 0 63 FOAM STRIP FOAM PE 920mm x 30mm x 2mm 10 UPPER GUIDE 11 FOAM PE 600mm x 25 x 2mm 12 FRAME GUIDE 13 WINDOW LOCKING BRACKET 14 DRAIN PIPE o pe po 4 lt po Lo W Top retainer bar is in the product package 10 Hoom Air Conditioner Installation Suggested SCREWDRIVER RULER KNIFE HAMMER PENCIL LEVEL Shippi Preparation of Chassis M ee 1 Remove the screws that fasten the cabinet at both sides and at the back 2 Slide the unit out from the cabinet by gripping the base pan handle and pulling forward while bracing the cabinet 3 Remove EPS Material 4 Cut the window sash seal to the proper length Peel off the backing and attach the foam pe 9 to the underside of the window sash 5 Remove the backing from the top upper guide Foam PE and attach it to the bottom of the upper guide d 6 Attach the upper guide onto the top of the cabinet with 3 type A screws 7 Insert the frame guides 2 into the bottom of the cabin
28. pliance is damaged it must be replaced by the special cord The special cord means the cord that has the same specification marked on the supply cord attached at the unit 11 Thermistor 1 Remove the control box Refer to section 3 2 Open the control box Refer to section 6 3 Disconnet the thermistor terminals from main P W B assembly 4 Remove the thermistor 5 Re install the components by refereing to the above removal procedure See Figure 26 12 SYNCHRONOUS MOTOR 1 Remove the control box Refer to section 3 2 Unfold the control box Refer to section 10 3 Remove the crankshaft 4 Disconnect all the leads of the synchronous motor Remove the 2 screws which fasten the synchronous motor See Fig 27 6 Re install the components by referring to the removal procedure above e 18 Hoom Air Conditioner Disassembly 13 Motor Remove the cabinet Refer to section 2 Remove the evaporator Refer to section 4 Remove the orifice Refer to section 4 Remove the blower Refer to section 4 Remove the fan Refer to section 5 Remove the control box cover and disconnect 5 or 4 wires of motor housing Refer to section 3 7 Remove the 2 or 4 screws that fasten the motor from the mount motor See Figure 28 8 Remove the motor 9 Re install the components by referring to the removal procedure above See Figure 28 oak DN Figure 28
29. t fasten the air guide from the barrier 16 Move the air guide backward pulling out from the base pan 17 Re install the components by referring to the removal procedure above FAN 1 Remove the cabinet Refer to section 2 2 3 4 5 6 T Remove the brace Refer to section 4 Remove the 4 screws that fasten the condenser Move the condenser to the left carefully Remove the clamp that secures the fan Remove the fan See Figure 20 Re install by referring to the removal procedure 16 Hoom Air Conditioner a Figure 18 Figure 19 Figure 20 Disassembly 6 Shroud 1 Remove the fan Refer to section 5 2 Remove the screw that fastens the shroud 3 Remove the shroud See Figure 21 4 Re install the component by referring to the removal procedure above S NL CEA 7 Overload Protector 1 Remove the cabinet Refer to section 2 Remove the nut that fastens the terminal cover me Remove the terminal cover See Figure 22 Remove all the leads from the overload protec is tor Remove the overload protector 6 Re install the component by referring to the removal procedure above AOUN 01 8 Compressor 1 Remove the cabinet Refer to section 2 2 Discharge the refrigerant system using a Freon Recovery System If there is no valve to attach the recovery sys tem install one such
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