LG Electronics LAU121CNM Air Conditioner User Manual
Contents
1. LCD DISPLAY STEP uD _ lilia I chuwa E npn E ma a TESTER GUT p gt gt als 3 CONTROLLER DE sss s amp E OPTION bie UDSTEP gt av 5 5 BP aoe diu MEELED Tbe d b I Te 1 2 ur KOSSCOANH Chin sour pode Leo BACKLIGHT a rant Dsum Bem HE mE STEPPING MOTOR FG mesra pue suse Ci RE DEGERE FRONTSTEPZOUT s s n mons CNURGL 5098 0128 FRONT STEPA cone i I 1 1 1 8 d ud l s D s gt ERE gf cal 8889 3232082808RR22285 AAR s ale EE EEPROM SC m DE St tact sw S PRPBPPPPPSPPPRIIO sp 1 ETT rone DE S3084BB F84BB E Lx 80 TQFP 142. 68 Room Air Conditioner Replacement Parts List Parts List Indoor Replacement Parts List PART No piu DESCRIPTION LAN121CNM ASNC121ERHO LAN121HNM ASNH121ERHO REMARKS LA121CPMI ASNC121ERHO LA121HPMI ASNH121ERHO 131410 CHASSIS ASSEMBLY 3141A20034C 3141A20034C 359011 FAN ASSEMBLY CROSS FLOW 5901A20017H 5901A20017H 346810 MOTOR ASSEMBLY AC INDOOR 4681AR2295L 4681 AR2295L 342800 BEARING 4280A20004A 4280A20004A 135516 COVER ASSEMBLY MOTOR 3551A20156B 3551A20156B 354210 EVAPORATOR ASSEMBLY FIRST 5421A20258B 5421A20258B 35211B TUBE ASSEMBLY TUBING 5211A29044B 5211A29044B 352115 TUBE ASSEMBLY EVAPORATOR IN 5211A29042A 5211A29042A 352116 TUBE ASSEMBLY EVAPORATOR OUT 5211A29043B 5211A29043B 135311 GRILLE ASSEMBLY DISCHARGE INDOOR 3531A10373B 3531A10373B 147581 LOUVER HORIZONTAL 5990A20072A 5990A20072A 146811 1 MOTOR ASSEMBLY DC STEPPING 4681A20055A 4681A20055A DISCHARGE 249951 CASE ASSEMBLY CONTROL INDOOR 4995A10205L 4995A10205K 268711 3 PCB ASSEMBLY MAIN 6871A20781B 6871A20781A 263230 1 THERMISTOR ASSEMBLY 6323A30002F 6323A30002F INLET AIR EVA MIDDLE 266090 HVPS DC DC 6609A10003Z 6609A10003Z 733010 PLATE ASSEMBLY INSTALLATION 3301A20020A 33
3. 5 Product Specifications l Product Specifications Cooling Only Item Model Name LA 121CNM 5 121 LA121CPM AS C121ERHO0 Power Supply 1 115V 60 Cooling Capacity 11 500 Input 1 150 Running Current COMP Locked Rotor AMP S E E R Air Circulation m G min cfm Moisture Removal l h pts hr Noise Level Sound Pressure 1m Indoor High Med Low Outdoor Max Features Temperature Control themistor Air Deflection 4 way Steps Fan Cool 3 4 Air Deflection Control up amp down auto Air Deflection Control left amp right auto Remocon Type Wireless LCD Setting Temperature Range Cooling Mode 64 86 F Temperature Increment 2 F 1 C Auto Operation electronic control Yes Self Diagnosis Yes Timer 24hr on off Sleep Operation Yes Healthy Dehumidification Mode Yes Restart Delay minutes 3 Refrigerant R 410a Charge 9 02 930 32 8 AWG P mm 14 3 2 5 Fuse of breaker Capacity A 20 Connecting Cable AWG P mm 18 4 0 75 Connecting Tube Socket Flare Liquid Side mmi in 6 35 1 4 Gas Side mm in 12 7 1 2 Length std m ft 7 5 25 Additional Drain Hose outer Dia mm
4. 50 Schematic Diagram u eee bee i nlt up eden 58 Electric Control Device ripe ae 58 Wiring EB I II uo 60 CON ponents LOCAT docs eon ne hte ante Leod DM tae tr 62 Product Specifications ciii ce ebd e pte pct itu du mte enda ah ud ecu 65 Exploded VieW RE 67 Replacement Parts ELS bes incinta te u u Ded ob la aah A aa saa 69 2 Room 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 properties only Meanings of symbols used in this manual are as shown below Be sure not to do Be sure to follow the instruction p A WARNING B Installation Do not use damaged power For electrical work contact the Always use the power plug and cords plugs loose socket dealer seller a qualified electri socket with the ground terminal cian or an Authorized Service Center There is risk of fire or electric There is risk of fire or electr
5. M pies 18 19 COMME CUCM OR The Drai r Ho0se_ emotions Oa 24 CONMECUON Ol SUA OOM 24 G brecuoti ol TI c oom etched edu a etna fio uei 25 Checking The Dralnag8 u ua een tere me 27 Forming UG coi eee eb up eae acai stain eee 28 PAU FUMING sa 2 ua EP 29 Air purging with Vacuum Pump Mete tette Heaut eu e 29 inn 31 Test RUNNING en HD 32 33 F nctiofi of 33 Display FUNGON 37 Self diagnosis Function hc aee deers ee ata teu ru ase 37 Remote Control Operations seu dat acute 38 Disassenibly coerce ue quis ee DA esse 39 HOSP A Mt E UE SD ie 39 Troubleshooting Guide 42 Refrigeration Cycle Diagram 42 2 Way 3 43 Qa uma apa kainasa ua uhu aap nat 49 Electronic Parts carious es o eto eb Point
6. ory Odo d O OW im gt 9 OB EO E Ost iss p a os E 1 oo Ho oita O64 G 8985 Q wo O e64ro O E WE Sted 9 9 5 Q 7 I 5 TENER HG ssi 5 i 9 Cm p sS H 8 00000000 opt EE EHE up O o m 8 Service Manual 63 Schematic Diagram DISPLAY ASSEMBLY 6871A00087B 6871A00088A Q lt 3016 1 gt NO 39HOd ZLIWIT NO 88888 ees 288 5 3 HOLOW 5NIdd31S 280009 1289 NSSV 2 ASSM 6871 00088 qo 4 6871A20259D LCD MODULE 6306A90009A RECEIVER PWB 6870A90719A lt COMPONENT SIDE gt MS LOVL y Oros rj 64 Room Air Conditioner 8LL006V0L89 ON d WSV 8 6306A90009C 1
7. In case more than 5m 16 4ft A CAUTION Capacity is based on standard length and maximum allowance length is on the basis of reliability Oil trap should be installed every 5 7meters 16 4 23 0ft 16 Hoom Air Conditioner Installation The wall you select should be strong and solid enough to prevent vibration 1 Mount the installation plate on the wall with type A screws If mounting the unit on a concrete wall use anchor bolts Mount the installation plate horizontally by aligning the centerline using a level 2 Measure the wall and mark the centerline It is also important to use caution concerning the location of the instal lation plate routing of the wiring to power outlets is through the walls typically Drilling the hole through the wall for piping connections must be done safely CHASSIS Distance mm in Grade A B C D E SE 65 2 6 110 4 3 85 3 3 110 4 3 Installation plate Do ZC 11 0 20 Left rear piping Right rear piping on Drill a Hole In The Drill the piping hole with a a70mm 2 76in hole core drill Drill the piping hole at either the right WA or the left with the hole slightly slanted to the out p door side Indoor Outdoor 5 7mm 0 2 0 3 Service Manual 17 Installation Main cause fo
8. gt L 9rH3Z8dW1 A31 NO WOOIN Service Manual 59 Schematic Diagram Wiring Diagran B Indoor Unit Models 12k LINN YOOdLNO OL AAAA CN MOTOR1 CN DC DC MAIN PCB ASM CN SUB 10PIN C CN SUB 10PIN MOTOR STEP STEP MOTOR 5PIN THERMISTOR 1 2 CN TH1 1 2 PLASMA ot O Q CN LIMIT2 CN FORCE CN RECEIVER Qog 9 5 LIMIT FORCE SWITCH SWITCH 60 Room Air Conditioner RECEIVER PCB P No 3854A20926C Schematic Diagram Outdoor Unit Models 12k C O WIRING DIAGRAM CN MOTOR LNOO NO 2009 MAIN PCB z RY COMP 3 PRESSURE WH S W 5 In
9. Gas side 3 way valve Liquid side 2 way valve MODEL DIM uni TEN W mm inch 770 30 3 H mm inch 540 21 3 D mm inch 245 9 6 L1 mm inch 287 11 3 L2 mm inch 64 2 5 L3 mm inch 518 20 4 L4 mm inch 10 0 4 L5 mm inch 100 3 9 10 Room Air Conditioner Introduction E Introduction Symbols Used In Thi A This symbol alerts you to the risk of electric shock This symbol alerts you to hazards that may cause harm to the air condi A tioner This symbol indicates special notes Air Filter Front Panel Signal Receptor Air Intake Vents Air Outlet Vents Drain Hose Air Outlet Vents Base Plate Service Manual 11 Installation Installation Read carefully and then follow step by step Installation Parts Type A screw and plastic anchor SESS SS 4 Remote Control Holder Installation plate Type B screw Figure Screw driver Ohmmeter Electric Drill Hexagonal wrench Measuring Tape Knife Ammeter Hole Core Drill se lay Gas Leak Detector 7 Thermometer Spanner c x 90 Torque wrench Flaring Tool Set 12 Room Air Conditioner Installation Installation Map _ NOTICE Installation parts you should purchase Installation plate Sleeve Cx
10. NOTICE 1 _ shows field wiring 2 Separately wire the high and low voltage line 3 Use heat proof electrical wiring capable of withstanding temperatures up to 167 F 4 Use outdoor and waterproof connection cable rated more than 300V for the connection between indoor and outdoor unit For example Type STOW Outdoor unit Terminal block Conduit panel Connecting cable Power supply cord Cover control Service Manual 25 Installation A CAUTION How to use the front panel 1 Front panel opening Hold the two ends of the front panel at the bottom and move it upward Front panel 2 Front panel closing Move the link upward and close the front panel 3 Front panel removing Raise the link up to hook hanger and remove front panel forward me CAUTION After the confirmation of the above conditions prepare the wiring as follows 1 Never fail to have an individual power circuit specifically for the air conditioner As for the method of wiring be guided by the circuit diagram posted on the inside of control cover 2 The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from vibrations to which the unit is subjected during the course of transportation Check them and make sure that they are all tightly fastened If they are loose it could cause burn out of the wires 3 Specification of power source 4 Confirm tha
11. 3854A20379R Models 12k H P CN MOTOR LWOO NO MAIN PCB OL RY COMP O _O 3 4 uaMOd PRESSURE WH S W CRANK CASE HEATER 3854A20379M Service Manual 61 Schematic Diagram B Indoor MAIN P W B ASSEMBLY TOP VIEW Q CN_DSPI CN SUB WHITE RI6H ROIL cos J04 CO4B pum CN TH3 CN TH2 CN 898688 888 OPTION OVO a WHITE REMO 201 BOTTOM VIEW kK 8 gt 7878 Ed en OO 60 0 o BES B QRO con 59 8 cN_PTC eb ORO O O u gt O 1000000 od Oxo com OSO o g OOO Bt CN 05 1 2 8 CN TM B 0000000 COSM 5 E d H XO O00 g OBO OO A 5 RO2H Q J33 O B RO6V ROSV gt Bn n Bere i
12. rm LiL m F C op 08 54 1 6 3 4 I 2 CAO Kou Yi 10 aed Ima ON D orF GsE 12 1 _ AUTOCLEAN 17 s 19 13 C 8 15 RESET aw QO 16 Flip up door opened 2 Operation Mode Cooling Operation Us Auto Operation UF Healthy Dehumidification Operation 6 Heating Operation D Cooling Model Heat Pump Model 38 Room Air Conditioner 1 2 8 9 CHAOS SWING BUTTON START STOP BUTTON Operation starts when this button is pressed and stops when the button is pressed again OPERATION MODE SELECTION BUTTON Used to select the operation mode ROOM TEMPERATURE SETTING LN Used to select the room temperature INDOOR FAN SPEED SELECTOR Used to select fan speed in four steps low medium high and CHAOS C gt JET COOL Used to start or stop the speed cooling speed cooling operates super high fan speed in cooling mode Used to stop or start louver movement and set the desired up down airflow direction ON OFF TIMER BUTTONS Used to set the time of starting and stopping operation TIME SETTING BUTTONS Used to adjust the time TIMER SET CANCEL BUTTON Used to set the timer when the desired time is obtained and to cancel the Timer operation 10 SLEEP MODE AUTO BUTTON
13. 1 5m 4 9ft Do not allow water to run into electric part Grasp the plug to remove the cord from the outlet Do not touch it with wet hands There is risk of fire failure of the product and or electric shock There is risk of fire or electric shock Do not place a heater or other appliances near the power cable There is risk of fire failure of the product and or electric shock Do not let the air conditioner run for a long time when the humidi ty is very high and a door ora window is left open Moisture may condense and wet or damage furnishings Safety Precautions Do not store of use flammable gas or combustibles near the air conditioner There is risk of fire or product fail ure Do not use the product ina tightly closed space for a long time Oxygen deficiency could occur Some ventilation by opeing win dow is necessary for the fresh air When flammable gas leaks turn off the gas and open a window for venti lation before turning the product on Do not use the telephone or turn switches on or off There is risk of explosion or fire Unplug the unit if strange sounds odors or smoke comes from it There is risk of fireproduct failure and or electric shock Stop operation and close any window in storm or hurricane before the hurricane arrives There is risk of property damage failure of product or electric shock Do not open the inle
14. website http www lgservice com LG EN Room Air Conditioner SERVICE MANUAL MODELS LAN121CNM 21 LAU121CNM ASUC121EUHO LA121HPMI 121 LA121HPMO ASUH121EUHO LAN121HNM ASNH121ERHO0 LAU121HNM ASUH121EUHO LA121CPMI ASNC121ERHO LA121CPMO ASUC121EUHO CAUTION e BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL ONLY FOR AUTHORIZED SERVICE PERSONNEL Air Conditioner Service Manual TABLE OF CONTENTS 3 Plut me ta 9 Symbols Used in This Manual tees Coq ege Qo mea tete petes eque alunt uns 9 ds opo UIA C 9 IB coro d u sua EA 10 PURE CUI CEN ONY M cR cS 11 Symbols Used In This eet Gace ils tite chant edet y e te Qe ed oet bte o Qc 11 amma T ut MM He ere 11 InstallaHon S l Duros Lu ded qe A uiu ee d pt 12 esate cee E 12 I PEE 12 VAS EMM AEROS 13 Confirm The SIRE 14 Select The Best Location 15 Piping Length and Elevation ant ttu pe lepine eee ee er 16 How to Mount Installation Plate pide pennant eae pes 17 Drilla Holein the i ettet ae ee ae el coms 17 Flaring Work
15. Anchor the outdoor unit with a bolt and nut 10mm 0 39in tightly and horizontally on a concrete or rigid mount When installing on the wall roof or rooftop anchor the mounting base securely with a nail or wire assuming the influence of wind and earthquake B In the case when the vibration of the unit is con veyed to the hose secure the unit with an anti vibration rubber Tubing connection Evaluation of the performance Operate unit for 15 20 minutes then check the system refrigerant charge 1 Measure the pressure of the gas side service valve 2 Measure the temperature of the intake and discharge of air 3 Ensure the difference between the intake tem perature and the discharge is more than 46 4 F 8 C Cooling or Heating Intake temperature Discharge air Discharge temperature 4 For reference the gas side pressure of optimum condition is as below Cooling Outside ambient TEMP The pressure of the gas side service valve 95 F 35 C 8 5 9 5kg cm G 120 135 P S I G NOTE If the actual pressure are higher than shown the system is most likely over charged and charge should be removed If the actual pressure are lower than shown the system is most likely undercharged and charge should be added The air conditioner is now ready for use PUMP DOWN This is performed when the unit is to be relocated or the refrigerant circuit is serviced P
16. higher pressure gauge of 50 range Balance Refrigerant of the 3 way Valve Gas leakage Troubleshooting Guide Outdoor unit Procedure 1 Confirm that both the 2 way and 3 way valves are set to the back seat 2 Connect the charge set to the 3 way valve s port Leave the valve on the charge set closed Connect the charge hose to the service port 3 Open the valve Lo side on the charge set and discharge the refrigerant until the gauge indicates 0 kg cm G f there is no air in the refrigerant cycle the pressure when the air conditioner is not running is higher than 1 kg cm G dis charge the refrigerant until the gauge indi cates 0 5 to 1 kg cm G if this is the case it will not be necessary to apply a evacuatin Discharge the refrigerant gradually if it is discharged too suddenly the refrigeration oil will also be discharged Service Manual 45 Troubleshooting Guide Evacuation All amount of refrigerant leaked Outdoor unit Procedure 1 Connect the vacuum pump to the center hose of charge set center hose 2 Evacuation for approximately one hour Confirm that the gauge needle has moved toward 76 cmHg vacuum of 4 mmHg or less 46 Room Air Conditioner 3 Close the valve Lo side on the charge set turn off the vacuum pump and con firm that the gauge needle does not move approxima tely 5 minutes afte
17. 2 Check temperature and pressure of refrigeration cycle Suction pressure Compared with the normal value Temperature Compared with the normal valve Cause of Trouble Description Defective compressor Current is low Defective 4 way reverse valve Higher Excessive amount of High pressure does not quickly Normal refrigerant rise at the beginning of operation Insufficient amount of Current is low Lower Higher refrigerant Leakage Clogging Current is low NOTICE 1 The suction pressure is usually 8 5 9 5 kg cm G Cooling at normal condition 2 The temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with putty Service Manual 49 Troubleshooting Guide Electronic P Product does not operate at all Refer to Electronic Control Device drawing and Schematic diagram Turn off Main Power Job After 20 seconds Turn on Main Power Does beeping sound is made from the Indoor Unit Check the voltage of power About AC 115V Main power s voltage Voltage applied to the unit 60Hz Primarily the operating condition of Micom is OK Connecting method of Indoor Outdoor connecting cable Check PWB Ass y Outdoor unit Fuse Pattern damage Varistor ZNRO1J Check each load Indoor Outdoor Fan Motor Compressor Stepping Motor and contacting condition of related c
18. 5 8 630 820 019 05 3 4 980 1210 24 Hoom Air Conditioner Outdoor unit Suction Line piping Bigger diameter lt Evaporator Line piping Smaller diameter Torque wrench 1 Remove the cover control from the unit by loosening the 3 screws 2 Dismount caps on the conduit panel 3 Temporarily mount the conduit tubes on the conduit panel 4 Properly connect both the power sup ply and low voltage lines to the corre sponding terminals on the terminal block 5 Ground the unit in accordance with local codes 6 Be sure to size each wire allowing sev eral inches longer than the required length for wiring 7 Use lock nuts to secure the conduit tubes NOTICE Connector trade size for this unit is 1 2 for instructions on connecting depending on the wire type you are using A CAUTION Be sure to comply with local codes while running the wire from the indoor unit to the outdoor unit size of wire and wiring method etc Every wire must be connected firmly No wire should be allowed to touch refrig erant tubing the compressor or any mov ing parts Power Supply AWG MIN Fuse or breaker Model Power source 6 Capacity 12k 19 115V 14 18 20A Installation Wiring Diagram Connecting cable Low voltage Indoor Unit Outdoor Unit Power supply circuit er Ground 1 is neutral for 115V models
19. Whether the line set is made shorter or longer you must adjust the charge based on how many ft of tubing are either added or removed based on 209 0 220z of R 410A per meter foot Pipe Size Standard Max Max Additional peu Length Elevation length Refrigerant Btu h Suction Evap 8 mitt mitt g m oz ft 12k Q12 7 1 2 26 35 1 4 7 5 25 7 5 25 15 49 20 0 22 Example A 30ft line set is used 5 additional ft X 0 22 ounce per foot add 1 1 ounces of R 410A Important If you are ever uncertain of the unit charge reclaim evacuate and weigh in the correct charge using the unit nameplate charge adjusting for line sets longer or shorter than 7 5m 25ft A CAUTION Confirm the refrigerant R 410A Use manifold gauge and hose for R 410A Service Manual 31 Test Running n Test Running 1 Check that all tubing and wiring have been properly connected 2 Check that the gas and liquid side service valves are fully open Prepare remote control 1 Remove the battery cover by pulling it according to the arrow direction 2 Insert new batteries making sure that the and of battery are installed correctly 3 Reattach the cover by pushing it back into position NOTE Use 2 AAA 1 5volt batteries Do not use rechargeable batteries Remove the batteries from the remote control if the system is not going to be used for a long time Settlement of outdoor unit
20. compressor off repeat Compressor ON Temp 2 Setting Temp 0 5 C Compressor OFF Temp gt Setting Temp 0 5 C In 10 min dehumidification operation the indoor fan operates with the low airflow speed Heating Mode Operation When the intake air temp reaches 3 C above the setting temp the compressor is turned off When reaches the setting temp the compressor is turned on Compressor ON Temp 2 Setting Temp Compressor OFF Temp gt Setting Temp 3 C While in compressor on the indoor fan is off when the indoor pipe temp is below 20 C when above 28 C it operates with the low or setting airflow speed When the indoor pipe temp is between 20 C and 28 it operates with Super Low while in sleep mode with the medium airflow speed While in compressor off the indoor fan is off when the indoor pipe temp is below 33 C when above 35 C it operates with the low airflow speed If overloaded while in heating mode operation in order to prevent the compressor from OLP tion the outdoor fan is turned on off according to the indoor pipe temp While in defrost control both of the indoor and outdoor fans are turned off Defrost Control While in heating mode operation in order to protect the evaporator pipe of the outdoor unit from freezing reversed to cooling cycle to defrost the evaporator pipe of the outdoor unit After 40 min heating mode operation at 4 min interval whether to carry out defrost c
21. stopped e Check the related circuit of RO2H 12 1K RO1H 6 2K Micom No 46 47 Indoor unit Check the indoor temperature sensor is disconnected or not About 10kQ at 77 F d When the temperature around Outdoor PWB Ass y is above 163 F the compressor is stop and only Outdoor Fan is operating d Check Relay RY COMP for driving compressor When the power About AC110V is applied to the connecting wire termi nal support transferred to compressor PWB Ass y is normal Check the circuit related to the relay Outdoor unit Check point COMP ON COMP OFF Between Micom No DC5V DCOV Between ICO2M No 9 Below DC 1V and ICO1M ICO2M No 8 app Turn off Main Power ut Check the electrical wiring diagram of outdoor side Check the abnormal condition for the component of Compressor Outdoor Fan Motor 52 Hoom Air Conditioner When indoor Fan does not operate Troubleshooting Guide Does the voltage of each terminals of CONNECTOR in Indoor unit corresponds to values in the Table of page 52 d uS Does the voltage of terminal of CN DC DC CONNECTOR in Indoor unit corresponds to the values in the table of page 52 Check connecting condition of the CN MOTOR CON d Do the voltage of terminal of CN DC DC CONNECTOR in Outdoor unit corresponds to the values in the
22. 01A20020A 135316 GRILLE ASSEMBLY FRONT INDOOR 3531A10374X 3531A10374H 137211 PANEL ASSEMBLY FRONT INDOOR 3721A20326A 3721A20326A 152302 FILTER AIR 5230A20064A 5230A20064A 146811 2 MOTOR ASSEMBLY DC STEPPING 4681A20055D 4681A20055D FRONT 268711 5 ASSEMBLY SUB 6871A00087B 6871A00087B OPTION 268711 4 ASSEMBLY SUB 6871A20259D 6871A20259D LIMIT S W 263040 LCD MODULE TN 6306A90009C 6306A90009A 267110 REMOTE CONTROLLER ASSEMBLY 6711A20128J 6711A20128H 352150 HOSE ASSEMBLY DRAIN 5251A20011G 5251A20011G 159830 FILTER ASSEMBLY AIR CLEANER 5983A20018G 5983A20018G NOTE Please ensure GCSC since these parts may be changed depending upon the buyer s request GCSC WEBSITE http biz LGservice com Service Manual 69 Replacement Parts List Parts List Outdoor PART No id DESCRIPTION LAUT21CNM ASUC121ERHO LAU121HNM ASUH121ERHO REMARKS LA121CPMO ASUC121ERHO LA121HPMO ASUHT2ERHO 430410 BASE ASSEMBLY OUTDOOR 3041 A20008K 3041 20008 552203 2 VALVE SERVICE 2H02479N 2H02479N GAS PIPE 552203 1 VALVE SERVICE 5220A20006A 5220A20006A LIQUID PIPE 554031 CONDENSER ASSEMBLY BENDING 5403A20221C 5403A20221C 549610 BRACKET ASSEMBLY MOTOR OUTDOOR 4961A10015B 4961A10015B 546810 AC MOTOR ASSEMBLY 4681A20122B 4681A20122B 559010 FAN ASSEMBLY PROPELLER 5901A10033A 5901A10033A 447910 BARRIER ASSEM
23. 11 12 13 14 15 16 17 18 19 Used to set Sleep Mode Auto operation AIR CIRCULATION BUTTON Used to circulate the room air without cooling or heating ROOM TEMPERATURE CHECKING BUTTON Used to check the room temperature NEO PLASMA OPTIONAL Used to start or stop the plasma purification function HORIZONTAL AIRFLOW DIRECTION CONTROL BUTTON OPTIONAL Used to set the desired horizontal airflow direction RESET BUTTON Used prior to resetting time 2nd F Button Used prior to using modes printed in blue at the bottom of buttons AUTO CLEAN OPTIONAL Used to set Auto Clean mode F SWITCHING BUTTON Used to switch temperature reading from Centigrade to Fahrenheit LCD LUMINOSITY BUTTON OPTIONAL Used to adjust LCD luminosity Disassembly indoor Unit A WARNING Disconnect the unit from power supply before mak ing any checks Be sure the power switch is set to OFF To remove the Grille from the Chassis Open the front panel as shown and Remove the Securing screws Set the up and down air discharge louver to open position horizontally by finger pressure Remove the securing screws To remove the Grille pull the lower left and right side of the grille toward you slightly tilted and lift it straight upward 1 Before removing the control box be sure to take out the wire screwed at the other end Disassembly Service Manual 39 Disassembly 2 T
24. 20 pd a corren lt see oe mans ET x RE muse s ES lo s res unser Le m upsrm ERER FEAA HEE msmo j ERRE l unsters Sree pain 2 SSR ate moie PEPSPRSE EE TITI SOS Sem 5 22 P a aja T vlt u option p 1 CH 5v 16 1 CN REMO E ales 2212541 IIS 3s ea Ce S 2 2 eo m 5 La g WoT w 1 gt EST om emnon i Option gt WIRE RC TROV E smwaoopar wi 8 we 2 2 our sv r m PTCAEATTR E E e S dre our L RISC 1K 29 RI6C 10K T 0 001uF ON R13C 10K SMW200 03P RD lt PL 12 16020 2868030 12uH T8L05BP 1 DC12V 27 Ly ARS 7812 eee M 1 ico h 2 2 ud R18C L w co leco len oso coso 10K es sle 2204F 220uF 00014 7990 SK ono 4 4 10 wv Tsw av P 25V 35V pc sv MOOR POLY SW 5 5 RXE250 2 CN MOTOR WH YW396 04V_ w B indoor 58 Hoom Air Conditioner Schematic Diagram Outdoor 12k ow
25. 22 High Pressure refrigerant may cause personal injury Boiling Pt C Vapor pressure 25 C kg Vapor density 25 C kg m R 410A 51 4 19 9 64 R 22 40 8 9 6 44 4 Do not handle the pipe by yourself customer High pressure refrigerant may cause personal injury manifold gauge charging and any piping tools must be dedicated to R 410A systems 14 Hoom Air Conditioner Indoor unit 1 Do not have any heat or steam near the unit 2 Select a place where there are no obstacles in front of the unit 3 Make sure that condensation drainage can be conveniently routed away 4 Do not install near a doorway 5 Ensure that the space around the left and right of the unit is more than 30cm 11 8in The unit should be installed as high on the wall as possi ble allowing a minimum of 20cm 7 9in from ceiling A CAUTION Installation 6 Use a stud finder to locate studs to prevent unnecessary damage to the wall 1 More than More than 20cm 7 9in 30cm 11 8in gt More than 30cm 11 8in More than 1 5m 4 9ft Install the indoor unit on the wall where the height from the floors more than 1 5meters 7 9ft A minimum pipe run of 7 5meters 24 6ft is required to minimize vibration and excessive noise Outdoor unit 1 If an awning is built over the unit to prevent direct sunlight or rain exposure make sure that heat radiation from the condenser is
26. 7 Installation Forming The P Form the piping by wrapping the connect ing portion of the indoor unit with insula tion material and secure it with two kinds of vinyl tapes If you want to connect an additional drain hose the end of the drain outlet should be routed above the ground Secure the drain hose appro priately In cases where the outdoor unit is installed below the indoor unit perform the following Tape the piping drain hose and connecting cable from down to up Secure the tapped piping along the exterior wall using saddle or equivalent Seal small openings around pipings with a gum type sealer Trap is required to prevent water from entering into electrical parts 28 Hoom Air Conditioner In cases where the Outdoor unit is installed above the Indoor unit perform the following Tape the piping and connecting cable from down to up Secure the taped piping along the exterior wall Form a trap to prevent water entering the room Fix the piping onto the wall by saddle or equiva lent Seal a small opening around the pipings with gum type sealer Air Purging Installation Air and moisture remaining in the refrigerant system have undesirable effects as indicated below Pressure in the system rises Operating current rises Cooling or heating efficiency drops Moisture in the refrigerant circuit may freeze and block capillary tubing Water may l
27. BLY OUTDOOR 4791A30002U 4791A30002U 550140 DAMPER COMPRESSOR 4 00982 4H00982E 554160 COMPRESSOR SET KOREA 2520UGAC2AA 2520UGAC2AA 567502 OVERLOAD PROTECT 6750U L029A 6750U L029A 552113 TUBE ASSEMBLY CONDENSER OUT 5211A24118B 5211A24118B 552116 TUBE ASSEMBLY REVERSE 5211A26008A 5211A26008A 552202 VALVE REVERSE 5220AR3228D 5220AR3228D 566000 SWITCH PRESSURE 6600L000013 6600L000013 561410 SOLENOID 6141A90007C ONLY MODEL 649950 CASE ASSEMBLY CONTROL OUTDOOR 4995A21006Q 4995A21006Q 268711 6 PCB ASSEMBLY MAIN 6871A20901B 6871 209018 OUTDOOR PCB 567480 4 THERMISTOR NTC 6323A20002L 6323A20002L INLET AIR COND OUT 567480 6 THERMISTOR NTC 6323A20016A 6323A20016A SUCTION PIPE TEMP WOCZZ CAPACITOR FILM BOX 6120AR2359U 6120AR2359U 437212 PANEL ASSEMBLY REAR OUTDOOR 3721A20026M 3721A20026M 437211 PANEL ASSEMBLY FRONT OUTDOOR 3721A20027Q 3721A20027Q 435301 GRILLE DISCHARGE 3530A20006G 3530A20006G 435511 COVER ASSEMBLY CONTROL OUTDOOR 3551AR7184R 3551AR7184R REAR PANEL NOTE Please ensure GCSC since these parts may be changed depending upon the buyer s request GCSC WEBSITE http biz LGservice com 70 Hoom Air Conditioner P No MFL31443001 Printed in Korea
28. Bushing Sleeve x Putty Gum Type Sealer Bend the pipe as closely on the wall as possible but be careful that it doesn t break Vertical Air deflector Operation Indication Lamps Signal Receptor Vinyl tape Wide x Apply after carrying out a drainage test To carry out the drainage test remove the air filters and pour water into the heat exchanger Forced Operation Button Saddle Cx Air Inlet Vents Gas side piping CX Optional Parts Air Outlet Vents At Additional drain pipe Vinyl tape Narrow Drain Hose Connecting cable Optional Parts Base Plate Service Manual 13 Installation Confirm The jerar 1 Check the quality label on the indoor and outdoor unit 2 Make certain that the refrigerant is R 410A NOTICE THIS PRODUCT CONTAINS R 410A REFRIGERANT 1 Different compressor oil R 410A Polyol ester R 22 Mineral Do not mix the existing mineral oil Do not apply used pipe tools and gauges covered with the existing mineral oil 2 Absorption of moisture Compressor oil has the high absorption rate of moisture 3 Composition R 410A R32 R125 50 50wt NOTE Never mix with other refrigerants Example Split type 12 000 Btu h 120 100 100 93 84 80 76 60 40 20 0 1 1 1 1 R 410A 100 70 50 30 0 R 22 0 30 50 70 100 4 High pressure 1 6 times higher than R
29. above checks Confirm the assembly conditions that are catching and interfering parts in the rotation radial of the Vertical Louver 54 Room Air Conditioner Troubleshooting Guide When a communication error occurs The operation indicator of Indoor unit blinks five times The red indicator of Outdoor unit blinks five times d Check the connecting wires between Indoor and Outdoor unit for the connecting error and the contacting condition d Check the installation condition of outdoor unit d Check for the communication error and the operating condition of product after also operating with the remote controller then taking above 2 minutes d Apply the power again after about 20 seconds by the power of Outdoor unit is off d Check for the communication error and the operating condition of product after also operating with the remote controller then taking above 2 minutes d Check the PWB assembly of Indoor and Outdoor unit A CAUTION If the connecting wires of Indoor and Outdoor unit are not connected within 2 minutes after the power of Outdoor unit is applied a communication error will occur Therefore the power should be applied after connect ing them Service Manual 55 Troubleshooting Guide The phenomena in case of connecting error INDOOR UNIT Connector Type Condition Phe
30. akage age 6 Hoom Air Conditioner Safety Precautions Do not install the product where Use two or more people to lift Do not install the product where the noise or hot air from the out and transport the air conditioner it will be exposed to sea wind door unit could damage the salt spray directly neighborhoods It may cause a problem for your Avoid personal injury t may cause corrosion in the neighbors product Corrosion particularly on the condenser and evaporator fins could cause product mal function or inefficient operation Operation Do not direct airflow at room Do not use the product for special Do not block the inlet or outlet occupants purposes such as preserving of air flow foods works of art etc It is a consumer air conditioner not a precision refrigeration system This could damage your health There is risk of damage loss of It may cause product failure property Use a soft cloth to clean Do not touch the metal parts of Do not step on or put anything Do not use harsh detergents the product when removing the the product outdoor unit solvents etc air filter They are very sharp e There is risk of fire electric shock There is risk of personal injury There is risk of personal injury or damage to the plastic parts of and failure of product the product Service Manual 7 Dimensions Always insert the filter securely Clean the filter every t
31. alone for long time Connecting error The signal of the remote controller is inputted The fuse and Q61 in the Outdoor unit are damaged when the indoor fan is operated Connecting error amp No power for Indoor unit The signal input of the remote controller and opera tion of product is impossible The RED indicator of the Outdoor unit blinks 5 times after 2 minutes with applying the power Service Manual 57 iagram ic D Schemat Schematic Diagram
32. ction or short in Thermistor 3 sec off 0 5 sec on Timer Indicator ON while in timer mode on off OFF when timer mode is completed or canceled Defrost Indicator OFF except when hot start during heating mode operation or while in defrost control Cooling Mode Operation When the intake air temperature reaches 0 5 C below the setting temp the compressor and the out door fan stop When it reaches 0 5 C above the setting temp they start to operate again Compressor ON Temp gt Setting Temp 0 5 C Compressor OFF Temp gt Setting Temp 0 5 C While in compressor running operating with the airflow speed set by the remote control While in compressor not running operating with the low airflow speed regardless of the setting Healthy Dehumidification Mode When the dehumidification operation input by the remote control is received the intake air tempera ture is detected and the setting temp is automatically set according to the intake air temperature 26 C lt Intake Air Temp 2 25 24 C lt Intake Air Temp lt 26 C 2 Intake Air Temp 1 C 18 C lt Intake Air Temp lt 24 C gt Intake Air Temp 0 5 C Intake Air Temp lt 18 C gt 18 C Service Manual 33 Operation While in compressor off the indoor fan repeats low airflow speed and pause While the intake air temp is between compressor on temp and compressor off temp 10 min dehu midification operation and 4 min
33. d both gas and liquid side service valves Bubbles indicate a leak Be sure to wipe off the soap with a clean cloth After the system is found to be free of leaks relieve the nitrogen pressure by loosening the charge hose connector at the nitrogen cylinder When the system pressure is reduced to normal disconnect the hose from the cylinder Manifold valve Pressure gauge Indoor unit Charge hose Nitrogen gas cylinder in vertical standing position Service Manual 29 Installation Soap water method 1 Remove the caps from the gas side and liquid side valves 2 Remove the service port cap from the gas side valve 3 To open the gas side valve turn the valve stem counterclockwise approximately 90 wait for about 2 3 seconds and close it 4 Apply a soap water or a liquid neutral detergent on the indoor unit connection or outdoor unit connec tions by a soft brush to check for leakage of the con necting points of the piping 5 If bubbles come out the pipes have leakage Evacuation Connect the charge hose end described in the preceding steps to the vacuum pump to evacuate the tubing and indoor unit Confirm the Lo knob of the manifold valve is open Then run the vacuum pump The operation time for evacuation varies with tub ing length and capacity of the pump The follow ing table shows the time required for evacuation Required time for evacuation when 30 gal
34. e Operation C O Model If the Jet Cool key is input at any operation mode while in appliance operation the Jet Cool mode operates In the Jet Cool mode the indoor fan is operated at super high speed for 30 min at cooling mode operation In the Jet Cool mode operation the room temperature is controlled to the setting temperature 18 C When the sleep timer mode is input while in the Jet Cool mode operation the Jet Cool mode has the priority When the Jet Cool key is input the upper lower vanes are reset to those of the initial cooling mode and then operated in order that the air outflow could reach further Jet Cool Mode Operation H P Model While in heating mode or Fuzzy operation the Jet Cool key cannot be input When it is input while in the other mode operation cooling dehumidification ventilation the Jet Cool mode is operated In the Jet Cool mode the indoor fan is operated at super high speed for 30 min at cooling mode operation In the Jet Cool mode operation the room temperature is controlled to the setting temperature 18 C When the sleep timer mode is input while in the Jet Cool mode operation the Jet Cool mode has the priority When the Jet Cool key is input the upper lower vanes are reset to those of the initial cooling mode and then operated in order that the air outflow could reach further Service Manual 35 Operation Forced operation Operation procedures when the re
35. ead to corrosion of parts in the refrigeration system Therefore the indoor unit and tubing between the indoor and outdoor unit must be leak tested and evacuated to remove any noncondensables and moisture from the system Air purging Witt Preparation Check that each tubing both liquid and gas side tubes between the indoor and outdoor units have been properly connected and all wiring for the test run has been completed Remove the service valve caps from both the gas and the liquid side on the outdoor unit Note that both the liquid and the gas side service valves on the outdoor unit are kept closed at this stage Leak test Connect the manifold valve with pressure gauges and dry nitrogen gas cylinder to this service port with charge hoses A CAUTION Be sure to use a manifold valve for air purging If it is not available use a stop valve for this purpose The Hi knob of the manifold valve must always be kept close Pressurize the system to no more than 150 P S I G with dry nitrogen gas and close the cylin der valve when the gauge reading reached 150 P S I G Next test for leaks with liquid soap A CAUTION To avoid nitrogen entering the refrigerant system in a liquid state the top of the cylinder must be higher than its bottom when you pressurize the system Usually the cylinder is used in a vertical standing position Do a leak test of all joints of the tubing both indoor and outdoor an
36. erature into the equation Operating Suction Pressure For R410A According to Indoor amp Outdoor Temperature At operating the Unit for 10 minutes 5 o 5 Qoa ag _ 9 2 5 10 15 20 25 30 35 40 Indoor Temp P 3 0 0123 x Tout 0 8 x Tin Where P Suction Pressure kg cm g Tout Outdoor Temperature C Tin Indoor Temperature C 48 Room Air Conditioner Troubleshooting Guide Cycle Parts 5 Trouble analysis 1 Check temperature difference between intake and discharge air and operating current Temp difference Current approx F 0 C less than 80 of rated current All amount of refrigerant leaked out Check refrigeration cycle Temp Difference Refrigerant leakege Clog of refrigeration cycle Defective compressor Temp difference Current approx 14 F 8 C less than 80 of rated current Operating Current Temp difference Current less than 14 F 8 C over the reated current Excessive amount of refrigerant Normal Temp difference over 14 F 8 C NOTICE Temperature difference between intake and discharge air depends on room air humidity When the room air humidity is relativery higher temperature difference is smaller When the room air humidity is relatively lower temperature difference is larger
37. gh the wall 2 Remove the plastic tubing retainer see the illus tration by and pull the tubing and drain hose away from chassis 3 Replace only the plastic tubing holder 1 not the holder 2 in the original position For left rear piping Route the indoor tubing and the drain hose in the direction of rear left Insert the connecting cable into the indoor unit from the outdoor unit through the piping hole Do not connect the cable to the indoor unit Make a small loop with the cable for easy con nection later Tape the tubing drain hose and the connecting cable Be sure that the drain hose is located at the lowest side of the bundle Locating at the upper side can cause drain pan to overflow inside the unit NOTICE If the drain hose is routed inside the room insu late the hose with an insulation material so that dripping from sweating condensation will not damage furniture or floors Foamed polyethylene or equivalent is recom mended Indoor unit installation Hook the indoor unit onto the upper portion of the installation plate Engage the three hooks of the rear top and rear lower of the indoor unit with the upper edge and lower edge of the installation plate Ensure that the hooks are properly seated on the installation plate by moving it left and right cable 2 ye alo Connecting o SS o 9 00 AS Drain pipe Indoor uni
38. h vac uum pump is used If tubing length is less if tubing length is longer than 10m 33 ft than 10m 33 ft 10 min or more 15 min or more When the desired vacuum is reached close the Lo knob of the manifold valve and stop the vac uum pump Finishing the job With a service valve wrench turn the valve stem of liquid side valve counter clockwise to fully open the valve Turn the valve stem of gas side valve counter clockwise to fully open the valve Loosen the charge hose connected to the gas side service port slightly to release the pressure then remove the hose Replace the flare nut and its bonnet on the gas side service port and fasten the flare nut securely with an adjustable wrench This process is very important to prevent leakage from the system Replace the valve caps at both gas and liquid side service valves and fasten them tight This completes air purging with a vacuum pump The air conditioner is now ready to test run 30 Hoom Air Conditioner 3 way valve Close 3 way valve Open Hexagonal wrench Suction Line Cap Vacuum pump Charging Each outdoor unit is factory charged nameplate charge for the evaporator as well as 7 5m 25ft line set Any time a line set is used either shorter or longer then the nominal 7 5m 25ft line set length the refrigerant charge has to be adjusted Installation
39. ic There is risk of electric shock shock shock Install the panel and the cover of Do not modify or extend the Do not install remove or re control box securely power cord install the unit by yourself cus tomer There is risk of fire or electric There is risk of fire or electric There is risk of fire electric shock shock shock explosion or injury Service Manual 3 Safety Precautions Be cautious when unpacking and installing the product Shape edges could cause injury Be especially careful of the sharp edges Be sure the installation area does not deteriorate with age If the base collapses the air con ditioner could fall with it causing property damage product failure and personal injury Operation Use a dedicated outlet for this appliance There is risk of fire or electric shock vA 4 Hoom Air Conditioner Do not install the product on a defective installation stand For installation always contact the dealer or an Authorized Service Center t may cause injury accident or damage to the product There is risk of fire electric shock explosion or injury co Do not handle the pipe by your self customer Install the indoor unit on the wall where the height from the floors more then 1 5m 4 9ft There are sharp moving parts that could cause personal injury High Pressure refrigent may Cause personal injury
40. in 15 5 5 8 Dimensions WxHxD Indoor 915 282 165 36 0 11 1 6 5 Outdoor 770 540 245 30 3 21 3 9 6 Net Weight Indoor 9 3 20 5 Outdoor 33 72 8 Gross Weight Indoor 11 24 3 Outdoor 33 3 73 4 Design and specifications subject to change without prior notice for product improvement Service Manual 65 Product Specifications Cooling amp Heating LA 121HNM AS H121ERHO0 dens e LA121HPM AS H121ERHO Power Supply V Hz 1 115V 60 Cooling Capacity BTU h 11500 Heating Capacity BTU h 11500 Input Cooling W 1150 Heating W 1150 Running Current Cooling A 10 5 Heating A 10 5 COMP Locked Cooling A 57 Rotor AMP Heating A 57 S E E R 13 H S P E 7 8 Air Circulation m min cfm 9 3 330 Moisture Removal I h pts hr 1 4 3 0 Noise Level Indoor High dB A 41 Sound Pressure 1m Med dB A 36 Low dB A 34 Outdoor Max dB A 48 Features Temperature Control themistor Air Deflection 4 way Steps Fan Cool Heat 3 4 3 Airflow Direction Control up amp down auto Airflow Direction Control left amp right auto Remocon Type Wireless LCD Setting Temperature Range Cooling Mode 64 86 F Heating Mode 60 86 F Temperature Increment 2 F 1 C Auto Operation electronic control Yes Self Diagno
41. l tape Wrap with vinyl tape wide Connecting cable Vinyl tape narrow Bundle the piping and drain hose together by wrapping them with vinyl tape over the range within which they fit into the rear piping housing section Wrap with vinyl tape Drain hose For right rear piping Route the indoor tubing and the drain hose to the required piping hole position Insert the connecting cable into the indoor unit Don t connect the cable to the indoor unit Make a small loop with the cable for easy con nection later Tape the drain hose and the connecting cable Connecting cable Indoor unit installation Hook the indoor unit onto the upper portion of the installation plate Engage the three hooks of the rear top and rear lower of the indoor unit with the upper edge and lower edge of the installation plate Ensure that the hooks are properly seated on the installation plate by moving it left and right Connecting cable 1 Drain hose Connecting the pipings to the indoor unit and the drain hose to drain pipe Put a couple drops of refrigerant oil on the face of the flare before assembling taking care not to add any contaminants Align the center of the pipings and sufficiently tighten the flare nut by hand 0895 Indoor unit tubing Flare nut Pipings Tighten the flare nut with a wrench Installation Spanner fixed Flare nut Torque w
42. mote control can t be used The operation will be started if the power button is pressed f you want to stop operation re press the button Heat pump Model Cooling Model Room Temp gt 24 C 75 2F 21 C 69 8F lt Room Temp lt 24 C 75 2F Room Temp lt 21 C 69 8F Operating mode Cooling Cooling Healthy Dehumidification Heating Indoor FAN Speed High High High High Setting Temperature 22 C 71 6 F 22 C 71 6 F 23 C 73 4 F 24 C 75 2F While in forced operation the key input by the remote control has no effect and the buzzer sounds 10 times to indicate the forced operation B Test operation During the TEST OPERATION the unit operates in cooling mode at high speed fan regardless of room temperature and resets 18 1 minutes During test operation if remote controller signal is received the unit operates as remote controller sets If you want to use this operation open the front panel upward and Press the power button let it be pressed for about 3 seconds If you want to stop the operation re press the button B Auto restart n case the power comes on again after a power failure Auto Restarting Operation is the function to operate procedures automatically to the previous operating conditions Protection of the evaporator pipe from frosting If the indoor pipe temp is below 0 C in 7 min after the compressor operates without any pause while in co
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44. nctions stop Connecting reversely The operation with the remote controller forced and test one do not operate All functions stop CN TRANS OPEN The operation with the remote controller forced and test one do not operate CN FAN OPEN The Indoor Fan does not operate The connecting All functions stop wire of CN OPEN The operation with the remote controller forced and test DC DC and one do not operate Indoor and The only signal of remote controller operation stop is Outdoor Unit Blue Black Brown Red Connecting error Do 6 inputted but the product does not operate The RED indicator of outdoor unit blinks 5 times after 2 minutes with applying the power Connecting error The beep sound such beep beep beep beep beep occurs periodically in Indoor unit The signal input of a remote controller and operation of product is impossible The RED indicator blinks 5 times after 2 minutes with applying the power Connecting error The signal of remote controller is inputted but the product does not operate The RED indicator of outdoor unit and the operation indicator of indoor one blinks 5 times after 2 minutes with applying the power Connecting error 9 No power for Indoor unit The signal input of the remote controller and opera tion of product is impossible The thermal protector of the Power Trans operates when let it
45. ng Model only lt 0000 CAPILLARY TUBE LIQUID SIDE I HEAT HEAT EXCHANGE EXCHANGE EVAPORATOR CONDENSER i m E 0 7 REVERSING ACCUMU VALVE LATOR gt 9 Ll Heating Model Only COMPRESSOR COOLING lt HEATING 42 Hoom Air Conditioner Troubleshooting Guide 2 way Valve Liquid Side 3 way Valve Gas Side Hexagonal wrench 4mm Flare nut Open position Closed position To piping connection To outdoor unit Valve cap Open position Closed position Flare nut piping Servi S connection ervice ervice port cap port To outdoor unit Works Shaft position Shaft position Service port Shippi Closed Closed Closed pping with valve cap with valve cap with cap Air purging Open Closed Open Installation counter clockwise clockwise push pin or with vacumm pump Closed persion with valve cap with valve cap with cap Pumping down Closed Open Open Transfering clockwise counter clockwise connected manifold gauge Evacuation Open Open Servicing with charging cylinder Gas charging Open Open Open Servicing with charging cylinder Pressure check Open n with chargin Servicing Open Open cylinder d Gas releasing Open with chargin Servicing Open Open Ecc Service Manual 43 Troubleshooting Guide Pumping Do
46. nomena CN DC DC Open and connecting error The same as the phenomenon of Outdoor Unit O e Blue 2 Black Brown Red The indoor fan does not operate Spon The operation indicator of Indoor unit blinks 8 times Open The up down vane does not operate CN UP DOWN Short between terminals The up down vane does not smoothly operate CN DISP Open It does not operate with a remote controller The operation indicator blinks once On for 0 5 second Open Off for 3 seconds The compressor and the outdoor fan stop The indoor fan speed is low CN TH The operation indicator blinks once Short between terminals on for 0 5 second off for 3 seconds and CN TH2 The compressor operates continuously regardless of the setting temperature and the variation of room temperature Short between terminals The operation indicator blinks once and CN TH1 on for 0 5 second off for 3 seconds Continuous operation 56 Hoom Air Conditioner OUTDOOR UNIT Troubleshooting Guide Connector Type Condition Phenomena All functions stop The operation with the remote controller forced and OPEN test one do not operate CN POWER Connecting reversely PWB pattern is damaged when applying the power All functions stop or the compressor does not operate OPEN The operation with the remote controller forced and test RY COMP one do not operate terminal All fu
47. not restricted 2 Ensure that the space around the back and sides is more than 30cm 1 1 8in The front of the unit should have more than 70cm 27 6in of space 3 Do not place animals and plants in the path of the warm air 4 Take the air conditioner weight into account and select a place where noise and vibration are minimum Rooftop Installations 5 Select a place so that the warm air and noise from the air conditioner do not disturb neigh bors More than 60cm 23 6in More than 30cm 11 8in More than 30cm 11 8in More than 70cm 27 6in More than J 60cm 23 6in If the outdoor unit is installed on a roof structure be sure to level the unit Ensure the roof structure and anchoring method are adequate for the unit location Consult local codes regarding rooftop mounting If the outdoor unit is installed on roof structures or walls this may result in excessive noise and vibra tion and may be also classed as non serviceable installation Service Manual 15 Installation Piping Length and i Pipe Size Standard Max Max Additional P Length Elevation length Refrigerant Btu h Suction Evap m ft mitt g m oz ft 12k 912 7 1 2 6 35 1 4 7 5 25 7 5 25 15 49 20 0 22 Indoor unit h Outdoor unit Outdoor unit E i Oil trap bcn B B Outdoor unit Indoor unit amp Indoor unit Me P
48. ns Bag V Bis B RIH 051 ROAT o R22H lt 9 B ROZT 3 om Lin amp E 0 OO 0 O E 012 2 EEEEEEB 929 ROIA R 62 Room Air Conditioner Schematic Diagram Outdoor 12k TOP VIEW AN PCB 6870A90706A GENE 6 0 ASM 6871A20901A ZNR01J 9 8 CN TAB N POWER em FUSE 125V 315A RY COMP A 8 RY 4WAY o i f ln OND LOND U gom 0 QE 580 80 i __ of wm 99 99 9 5 209 5 9 o A 5119 9 5 OO 6566668 A 69 _ Oe Os it a Lc gt 008 8886 Be gejeB o m s soe A G 99 9 9 o 2658 elle Ono o 4dLe o 90 O N T cL O 0 Find ls J L OO iw
49. o remove the Control Box Remove securing screws Pull the control box out from the chassis carefully AE AQUIS 5 3 To remove the Discharge Grille Unhook the discharge grille and pull the discharge grille out from the chassis carefully 4 To remove the Evaporator Remove 3 screws securing the evaporator at the left 2EA in the Eva Holder at the right 1EA A CAUTION When repair do not damage the Caution label 40 Room Air Conditioner IA Disassembly Unhook the tab on the right inside of the chassis at the same time slightly pull the evaporator toward you until the tab is clear of the slot 5 To remove the Motor Cover Remove 2 securing screw Pull the motor cover out from the chassis carefully 6 To remove the Cross Flow Fan Loosen the screw securing the cross flow fan to the fan motor do not remove Lift up the right side of the cross flow fan and the fan motor separate the fan motor from the cross flow fan Remove the left end of the cross flow fan from the self aligning bearing Service Manual 41 Troubleshooting Guide Troubleshooting Guide 1 Cooling Only Models INDOOR UNIT OUTDOOR UNIT CAPILLARY TUBE HEAT EXCHANGE EXCHANGE EVAPORATOR CONDENSER 9 COMPRESSOR GAS SIDE 2 Cooling amp Heating Models INDOOR UNIT OUTDOOR UNIT CHECK VALVE Heati
50. oling cycle operation mode the compressor and the outdoor fan are turned off in order to protect the indoor evaporator pipe from frosting When the indoor pipe temp is 7 C or higher after 3 min pause of the compressor the compressor and the outdoor fan is turned on according to the condition of the room temperature Buzzer Sounding operation When the appliance operation key is input by the remote control the short beep beep sounds When the appliance pause key is input by the remote control the long beep sounds 36 Room Air Conditioner Display Function E 1 Heating Model Operation Indicator D Cooling Soft Dry Fan Heating 2 Cooling Model Operation Operation Indicator D Cooling Soft Dry Fan 1 Deicer Indicator Compressor on Indicator Hot start Deice Self diagnosis Function Error Error Display LED Code Indoor body operation LED Error contents SVC check point once Indoor room temperature thermistor open short 4 gt lt gt 4 gt 3sec 3sec Indoor pipe temperature thermistor open short Indoor Thermistor assembly check Service Manual 37 Operation Remo te The controls will look like the following P Signal transmitter k Pel 0 JET H NS zL ie
51. on is carried out regardless of the above condi tion When the indoor pipe temp is 42 C or above defrost control is not carried out even if the condition is one of the defrost conditions above While in defrost control the compressor is on and the indoor fan the outdoor fan and the 4 way valve are off 34 Hoom Air Conditioner Operation Airflow Speed Selection The airflow speed of the indoor fan is set to high medium low or chaos auto by the input of the airflow speed selection key on the remote control Sleep Timer Operation When the sleep time is reached after 1 2 3 4 5 6 7 0 cancel hr is input by the remote control while in appliance operation the operation of the appliance stops While the appliance is on pause the sleep timer mode cannot be input While in cooling mode operation 30 min later since the start of the sleep timer the setting tempera ture increases by 1 C After another 30 min elapse it increases by 1 again When the sleep timer mode is input while in cooling cycle mode the airflow speed of the indoor fan is set to the low When the sleep timer mode is input while in heating cycle mode the airflow speed of the indoor fan is set to the medium Chaos Natural Wind Mode When the Chaos Natural Wind mode is selected and then operated the high medium or low speed of the airflow mode is operated for 2 15 sec randomly by the Chaos Simulation Jet Cool Mod
52. onnector including connecting cable of Indoor Outdoor Unit Se Check the connection housing for contacting Connector related to CN POWER Connector related to CN FAN Connector contacting of Outdoor Fan Compressor Display PWB Ass y Check Connector related to CN DC DC 72 PCB Board Operation Check Items Content Remedy Power Transformer Outdoor unit Input Voltage Output Voltage q 1 010 7812 Output Indoor Outdoor unit q 1 020 7805 Output Indoor unit 1 030 7805 Output Outdoor unit q 7036 Reset IC Indoor 16MHz Outdoor 8MHz About 115 10 Check the power voltage Replace SMPS About DC15V 3 Module DC 12V e Replace ICO1D DC 5V Replace ICO2D Indoor unit ICO2D Outdoor unit Voltage of Outdoor unit Micom No 18 Voltage of Indoor unit Micom No 43 and soldering condition Replace faulty parts 50 Hoom Air Conditioner Troubleshooting Guide The product is not operate with the remote controller Turn on Main Power iE While the compressor has been stopped the compressor does not operate owing to the delaying function for 3 minutes after stopped uds When the compressor stopped Indoor Fan is driven by a low speed At this point the wind speed is not controlled by the remote controller When operated in the Sleeping Mode the wind speed is set
53. ontrol or not and the time of defrost control are determined according to the following conditions 1 While in heating mode operation the maximum of the indoor pipe temperature is measured and it is compared with the present indoor pipe temperature to get the difference of the indoor pipe temper atures the maximum temperature of indoor pipe the present temperature of indoor pipe according to which whether to carry out defrost control or not is determined 2 According to the need of defrost control shown above and the elapsed time of heating mode opera tion at that moment the defrost control time is determined 3 When the determined time of defrost control is below 7 min heating mode operation continues without carrying out defrost control According to the procedure stated above the determination is made again When the defrost control time is 7 min or longer defrost control is then carried out While in defrost control the minimum temp of the indoor pipe is measured and it is compared with the present temp of the indoor pipe to get the difference of the indoor pipe temperatures the pre sent temperature of the indoor pipe the minimum temperature of the indoor pipe When the differ ence is 5 C or higher defrost control is completed and heating mode operation is carried out While in defrost control if the defrost time determined before the start of defrost control is complet ed defrost control stops and heating mode operati
54. piping hole Reroute the pipings and the drain hose across the back of the chassis Installation A CAUTION Installation Information For left piping Follow the instruction below Correct case Press on the upper side of clamp and unfold the tubing to downward slowly Incorrect case Following bending type from right to left may cause damage to the tubing Service Manual 23 Installation The drain hose can be connected at two different positions Use the most convenient position and if necessary exchange the position of the drain pan rubber cap and the drain hose Drain pan 9 Rubber cap Drain hose Exchange if necessary e Remove the drain hose Securely insert both the rubber plug and drain hose into the drain outlets Be sure the rubber the cap is securely fastened so that there is no leakage Connection of P ip Put a couple drops of refrigerant oil on the face of the flare before assembling taking care not to add any contaminants Align the center of the pipings and suffi ciently tighten the flare nut by hand Finally tighten the flare nut with torque wrench until the wrench clicks When tightening the flare nut with torque wrench ensure the direction for tightening fol lows the arrow on the wrench Outside diameter Torque mm inch kgf cm 26 35 1 4 180 250 99 52 3 8 340 420 212 7 1 2 550 660 215 88
55. r gas leakage is due to defect in flaring work Carry out correct flaring work in the follow ing procedure Cut the pipes and the cable 1 Use the piping kit accessory or the pipes purchased locally 2 Measure the distance between the indoor and the out Copper a O door unit i 90 Sam a Ven ed e 3 Cut the pipes a little longer than measured distance 22 Y LJ 4 Cut the cable 1 5m 59 1in longer than the pipe length Y to Burrs removal 1 Completely remove all burrs from the cut cross section Pipe of pipe tube Reamer 2 Put the end of the copper tube pipe in a downward direction as you remove burrs in order to avoid drop Point down ping burrs into the tubing Putting nut on Remove flare nuts attached to indoor and outdoor unit then put them on pipe tube having completed burr removal not possible to put them on after flaring work Flaring work Carry out flaring work using flaring tool as shown below Firmly hold copper pipe in die in the dimen sion shown in the table above Outside diameter A mm inch mm inch 26 35 1 4 1 1 1 3 0 043 0 051 09 52 3 8 1 5 1 7 0 059 0 066 912 7 1 2 1 6 1 8 0 063 0 070 015 88 5 8 1 6 1 8 0 063 0 070 019 05 3 4 1 9 2 1 0 074 0 082 18 Room Air Conditioner Connecting The Indoor Installation 1 Prepare the indoor unit s piping and drain hose for installation throu
56. r turning off the vacuum pump 4 Disconnect the charge hose from the vac uum pump Vacuum pump oil If the vacuum pump oil becomes dirty or depleted replenish as needed A CAUTION Use vacuum pump equipped with check value applied to be prevented from flowing backward Gas Charging After Evacuation Troubleshooting Guide Indoor unit Charging cylinder Outdoor unit Procedure 1 Connect the charge hose to the charging cylinder Connect the charge hose which you dis connected from the vacuum pump to the valve at the bottom of the cylinder If you are using a gas cylinder also use a scale and reverse the cylinder so that the system can be charged with liquid 2 Purge the air from the charge hose Open the valve at the bottom of the cylin der and press the check valve on the charge set to purge the air Be careful of the liquid refrigerant The procedure is the same if using a gas cylinder 3 Open the valve Lo side on the charge set and charge the system with liquid refrig erant f the system can not be charged with the specified amount of refrigerant it can be charged with a little at a time approximate ly 150g each time while operating the air conditioner in the cooling cycle however one time is not sufficient wait approxi mately 1 minute and then repeat the pro cedure pumping down pin This is different from previou
57. rench Connection pipe Indoor unit tubing Outside diameter Torque mm inch kgf cm 6 35 1 4 180 250 9 52 3 8 340 420 212 7 1 2 550 660 915 88 5 8 630 820 219 05 3 4 980 1210 Mount the clamp the boss with a type B screw SE H P 9k 12k C O 12k B screw Drain hose When extending the drain hose at the indoor unit install the drain pipe L2 Indoor unit drain hose Adhesive Vinyl tape narrow Wrap the insulation material around the connecting portion Overlap the connection pipe heat insulation and the indoor unit pipe heat insulation material Bind them together with vinyl tape so that there is no gap Plastic bands Insulation material P ML WE qe CC Xxe UC Service Manual 21 Installation Wrap the area which accommodates the rear piping housing section with vinyl tape Connection lIndoor pipe unit piping Vinyl tape Wrap with vinyl tape wide Pipe Vinyl tape narrow Connecting cable Bundle the piping and drain hose together by wrapping them with cloth tape over the range within which they fit into the rear piping housing section Pipe Drain hose Vinyl tape narrow Wrap with vinyl tape wide 22 Room Air Conditioner Reroute the pipings and the drain hose across the back of the chassis Piping for passage through
58. s procedures Because you are charging with liquid refrigerant from the gas side absolutely do not attempt to charge with larger amounts of liquid refrigerant while operating the air conditioner 4 Immediately disconnect the charge hose from the 3 way valve s service port Stopping partway will allow the gas to be discharged If the system has been charged with liquid refrigerant while operating the air condi tioner turn off the air conditioner before disconnecting the hose 5 Mount the valve stem nuts and the service port nut Use torque wrench to tighten the service port nut to a torque of 1 8 kg m Be sure to check for gas leakage A CAUTION This unit is charged with R 410A Pay attention not to charge R 22 Service Manual 47 Troubleshooting Guide Additional gas charging Gas leakage When refrigerant is insufficient by leakage recharge the unit with the refrigerant up to normal oper ating suction pressure Use the graph or the equation below to get operating suction pressure according to indoor and out door temperature Suction pressure was measured at 3 way valve service port after operating the unit for 10 minutes The method of using graph Find outdoor temperature Find indoor temperature onto the curve of outdoor temperature Read suction pressure at the axis of ordinates The method of using equation Calculate suction pressure after putting indoor and outdoor temp
59. sis Yes Timer 24hr on off Sleep Operation Yes Healthy Dehumidification Mode Yes Restart Delay minutes 3 Defrost Control Yes Hot Start Yes Refrigerant R410A Charge 9 02 930 32 8 Power cord AWG P mm 14 3 2 5 Fuse or breaker Capacity A 20 Connecting Cable AWG P mm 18 4 0 75 Connecting Tube Liquid Side mm in 6 35 1 4 Socket Flare Gas Side mm in 12 7 1 2 Length std m ft 7 62 25 Additional Drain Hose Outer Dia mm in 15 5 5 8 Dimensions Indoor mm 915 282 165 WxHxD in 36 0 11 1 6 5 Outdoor mm 770 540 245 in 30 3 21 3 9 6 Net Weight Indoor kg Ibs 9 3 20 5 Outdoor kg Ibs 33 72 8 Net Weight Indoor kg lbs 11 24 3 Outdoor kg lbs 33 3 73 4 Design and Specifications subject to change without prior notice for product improvement 66 Room Air Conditioner Exploded View lew Exploded V Indoor Unit Service Manual 67 Exploded View Outdoor Unit 12k Btu h Seriess
60. t Spacer Installation plate 8cm Service Manual 19 Installation Connecting the pipings to the indoor unit and drain hose to drain pipe Put a couple drops of refrigerant oil on the face of the flare before assembling taking care not to add any contaminants Align the center of the pipings and sufficiently tighten the flare nut by hand 4 Indoor unit tubing Flare nut Pipings Tighten the flare nut with a wrench Indoor unit tubing Outside diameter Torque mm inch kgf cm 26 35 1 4 180 250 99 52 3 8 340 420 012 7 1 2 550 660 015 88 5 8 630 820 019 05 3 4 980 1210 Mount the clamp on the boss with a type B screw SE H P 9k 12k C O 12k I Type B screw 9 Drain hose When extending the drain hose at the indoor unit install the drain pipe Indoor unit drain hose Vinyl tape narrow Adhesive 20 Hoom Air Conditioner Wrap the insulation material around the connecting portion Overlap the connection pipe insulation material and the indoor unit pipe insulation material Bind them together with vinyl tape so that there is no gap Plastic bands Insulation material uU eee Wrap the area which accommodates the rear piping housing section with vinyl tape Connection Indoor pipe unit pipe Viny
61. t electrical capacity is sufficient 5 Confirm that the starting voltage is maintained at more than 90 percent of the rated volt age marked on the name plate 6 Confirm that the cable thickness is as specified in the power source specification Particularly note the relation between cable length and thickness 7 Always install an GFCI circuit breaker in a wet or moist area 8 The following would be caused by voltage drop Vibration of a magnetic switch which will damage the contact point open fuse disturbance of the normal function of the overload 9 The means for disconnection from a power supply shall be incorporated in the fixed wiring and have an air gap contact separation of at least 3mm 0 12in in each active phase conductors 26 Room Air Conditioner Pour a glass of water on the drain pan Installation Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit Connecting area drain hose Leakage checking SE lt lt gt Drain piping The drain hose should point downward for easy drain flow Downward slope Avoid these situations Bin not raise Accumulated drain water Air Tip of drain hose Y dipped in water 5 L Water Water Water leakage leakage leakage Ditch Less than 50mm gap y Service Manual 2
62. t grill of the product during operation Do not touch the electrostatic filter if the unit is so equipped There is risk of physical injury electric shock or product When the product is soaked flooded or submerged contact an Authorized Service Center There is risk of electrical shock Service Manual 5 Safety Precautions Ventilate the product from time Unplug the appliance before When the product is not be used to time when operating it togeth performing cleaning or mainte for a long time disconnect the er with a stove etc nance power supply plug or turn off the breaker There is risk of fire or electrical There is risk of electric shock shock There is risk of product damage or failure or unintended opera tion Take care to ensure that nobody could step on or not insert hands or other objects through the fall onto the outdoor unit air inlet or outlet while the air conditioner is plugged in There could result in personal injury and product There are sharp and moving parts that could cause damage personal injury A CAUTION B installation Always check for gas refriger Install the drain hose to ensure Keep level even when installing ant leakage after installation or that water is drained away prop the product repair of product erly Low refrigerant levels may cause A bad connection may cause To avoid vibration or water leak product failure water le
63. table of page 52 Check the pattern and the condition of Indoor unit PWB AsS y NECTOR JL Check the interference of Indoor Fan E Check the patterns and the conditions of outdoor unit PWB Assy s Check the connecting condi tion and disconnection of connecting wires between Indoor and Outdoor unit Check the motor of Indoor Fan x Indoor Fan may be stopped in the Soft Dry Mode change to the Cooling Operation Mode Indoor Fan is to be stopped when Indoor pipe coil termperature is lower than 79 F At that times Defrost indicator is turned on Service Manual 53 Troubleshooting Guide When Vertical Louver does not operate Confirm that the Vertical Louver is normally geared with the shaft of Stepping Motor f the regular torque is detected when rotating the Vertical Louver with hands Normal Check the connecting condition of CN UP DOWN Connector Check the soldering condition on PWB of CN UP DOWN Connector E Check the operating circuit of the Vertical Louver Confirm that there is DC 12V between pin RED CN UP DOWN and GND Confirm that there is a soldering short at following terminals Between 67 78 79 and 0 of MICOM Between 2 5 7 of ICO1M Between 40 47 42 of ICO1M Between 1 2 3 5 of CN UP DOWN 772 If there are no problems after
64. to the low speed by force d lE Cause by the remote controller Caused by other parts except the remote controller d When the mark 4 is displayed LCD screen replace battery 72 Check the contact CN DISP connector d When the detect switch double key inside the remote controller door is fault it is impossible to operate temperature regulating A w and wind speed selecting Check DISP PWB Ass y Voltage between CN DISP 4 DC 5V d Check the connecting circuit between the remote controller No R17 2Q IR LED Q1 R16 2 2KQ M Check point Check the connecting circuit between PIN 43 R11L 1K C11L 680PF MICOM PIN Check Receiver Ass y Service Manual 51 Troubleshooting Guide Compressor Outdoor Fan are unable to drive Turn on Main Power d Operate Cooling Mode s by setting the desired temperature of the remote controller is less than one of the indoor temperature by 2 F at least d When in Fan Mode Compressor Outdoor Fan is stopped d Check the sensor for indoor temperature is attached as close as to be effected by the temperature of Heat Exchanger EVA d When the sensor circuit for indoor temperature and connector are in bad connection or are not engaged Compressor Outdoor Fan is
65. ump Down means collecting all refrigerant in the out door unit without loss of refrigerant CAUTION Be sure to perform Pump Down procedure with the unit cooling mode Pump Down Procedure 1 Connect a low pressure gauge manifold hose to the charge port on the gas side service valve Open the gas side service valve halfway and purge the air from the manifold hose using the refrigerant gas Close the liquid side service valve all the way in Turn on the unit s operating switch and start the cooling operation When the low pressure gauge reading becomes 1 to 0 5kg cm G 14 2 to 7 1 5 1 6 fully close the gas Side valve stem and then quickly turn off the unit At that time Pump Down has been completed and all refriger ant will have been collected in the outdoor unit 32 Hoom Air Conditioner Operation Operation Function of Cor DISPLAY 1 C O Model Operation Indicator ON while in appliance operation OFF while in appliance pause Flashing while in disconnection or short in Thermistor 3 sec off 0 5 sec on Timer Indicator ON while in timer mode on off OFF when timer mode is completed or canceled Comp Running Incidator While in appliance operation ON while in outdoor unit compressor running OFF while in compres sor off 2 H P Model Operation Indicator ON while in appliance operation OFF while in appliance pause Flashing while in disconne
66. wn Purge the air Outdoor unit Procedure 1 Confirm that both the 2 way and 3 way valves are set to the open position Remove the valve stem caps and confirm that the valve stems are in the raised posi tion Be sure to use a hexagonal wrench to operate the valve stems 2 Operate the unit for 10 to 15 minutes 3 Stop operation and wait for 3 minutes then connect the charge set to the service port of the 3 way valve Connect the charge hose with the push pin to the service port 4 Air purging of the charge hose Open the low pressure valve on the charge set slightly to air purge from the charge hose 5 Set the 2 way valve to the closed position 44 Room Air Conditioner 6 Operate the air conditioner at the cooling cycle and stop it when the gauge indi cates 1kg cm g 7 Immediately set the 3 way valve to the closed position Do this quickly so that the gauge ends up indicating to 5kg cm g 8 Disconnect the charge set and mount the 2 way and 3 way valve s stem nuts and the service port nut Use torque wrench to tighten the service port nut to a torque of 1 8 kg m Be sure to check for gas leakage A CAUTION Do not use the existing charge set for R 22 It is necessary to use new charge set for R 410A The pressure of R 410A is 1 6 times higher than that of R 22 Thus the high pres sure side gauge of charge set should be used
67. wo weeks or more often if necessary A dirty filter reduces the efficiency of the air condi tioner and Use a firm stool or ladder when cleaning or main taining the air conditioner Be careful and avoid personal injury B Disuse Do not drink the water drained from the unit is not sanitary and could cause serious health issues Replace all the batteries in the remote There is risk of fire or explosion Do not recharge or disassemble the batteries Do not dispose of batteries in a fire They may burn or explode 2 SS 8 Room Air Conditioner If the liquid from the batteries gets onto your skin or clothes wash it well with clean water Do not use the remote if the batteries have leaked The chemicals in batteries could cause burns or other health hazards Dimensions imensions ED This symbol alerts you to the risk of electric shock A This symbol alerts you to hazards that could cause harm to the air conditioner A NOTICE This symbol indicates special notes Indoor Unit e oO a s gg jal 2 m 12 5 E o c s z Service Manual 9 Dimensions Outdoor Uni i 1 12k
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