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Service Manual

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4. LOCATION PART No DESCRIPTION REMARKS No LSU090CE LSU120CE LSUO90HE LSU120HE 263230 1 THERMISTOR ASSEMBLY 6323A20002L 6323A20002L 6323A20002L 6323A20002L R 263230 2 THERMISTOR ASSEMBLY 6323A20016A 6323A20016A 6323A20016A 6323A20016A R 430410 BASE OUTDOOR 3041A20008K 3041A20008K 3041A20008K 3041A20008K R 435301 GRILLE DISCHARGE 3530A20006G 3530A20006G 3530A20006G 3530A20006G R 435511 COVER ASSEMBLY CONTROL OUTDOOR 3551AR7184R 3551AR7184R 3551AR7184R 355 1AR7184R R 437210 PANEL ASSEMBLY FRONT OUTDOOR 3721A20027Q 3721A20027Q 3721A20027Q 3721A20027Q R 437212 PANEL ASSEMBLY REAR OUTDOOR 3721A20026M 3721A20026M 3721A20026M 3721A20026M R 447910 BARRIER ASSEMBLY OUTDOOR 4791A30002G 4791A30002U 4791A30002U 4791A30002U R 55211G TUBE ASSEMBLY CONDENSER OUT 5211A25032A 5211A24118B 5211A24118B 5211A24118B R 552203 1 VALVE SERVICE 5220A20005B 5220A20005B 5220A20005B 5220A20005B R 552203 2 VALVE SERVICE 5220A20001Q 5220A20006A 5220A20006A 5220A20006A R 546810 MOTOR ASSEMBLY OUTDOOR 4681A20122B 4681A20122B 4681A20122B 4681A20122B R 549610 BRACKET ASSEMBLY MOTOR OUTDOOR 4960 10011 4961A10015B 4961A10015B 4961A10015B R 550140 ISOLATOR 4H00982E 4H00982E 4H00982E 4H00982E R 552102 TUBE ASSEMBLY CAPILLARY 5210A21036K 5211A29045B 5211A29045B 5211A29045B R 552116 TUBE ASSEMBLY REVERSE 5211 26008 5211 26008 5211 26008 R 5
5. LL REE NETT Service Manual 75 Exploded View Outdoor Unit 18k C O Seriess i ye 76 Room Air Conditioner Exploded View Outdoor Unit 18k H P 24k Seriess ZZ ZZ M 7
6. Service Manual 77 Replacement Parts List l Replacement Parts List Parts List Indoor EN DESCRIPTION iniu REMARKS No LSN090CE LSN120CE LSNO90HE LSN120HE 131410 CHASSIS ASSEMBLY 3141A20019F 3141A20034A 3141A20034A 3141A20034A R 135311 GRILLE ASSEMBLY DISCHARGE INDOOR 3531A10307V 3531A10362H 3531A10362C 3531A10362C R 135312 GRILLE ASSEMBLY FRONT INDOOR 3531A23003T 3531A18013J 3531A18013J 3531A18013J R 135516 COVER ASSEMBLY MOTOR 3551A20156B 3551A20156B 3551A20156B 3551A20156B R 146811 MOTOR ASSEMBLY STEP 4681A20055A 4681A20055A 4681A20055A 4681A20055A R 152302 FILTER MESH A C 5230A20051B 5230A20064A 5230A20064A 5230A20064A R 152312 FILTER ASSEMBLY 5231A20040A 5231A20040K 5231A20040K 5231A20040K R 159901 VANE HORIZONTAL 5990A20069A 5990A20068A 5990A20068A 5990A20068A R 249951 CONTROL BOX ASSEMBLY INDOOR 4995A10205C 4995A10205D 4995A10205D 4995A10205D R 263230 THERMISTOR ASSEMBLY 6323A20004N 6323A20004N 6323A20004N 6323A20004N R 267110 REMOTE CONTROLLER ASSEMBLY 6711A20128A 6711A20128A 6711A20128C 6711A20128C R 268712 PWB PCB ASSEMBLY DISPLAY 6871A20680F 6871A20680F 6871A20680D 6871A20680D R 268714 PWB PCB ASSEMBLY MAIN 6871A20771B 6871A20771C 6871A20771C 6871A20771C R 342800 BEAR
7. 29 Checking the Drainage mmm pp tee _ 29 Form the Piping 28 REM SSA 5 a 30 AIR PURGING 31 Air purging W JE 7 EL OEE 31 Air purging with vacuum a ip Fr Lom mime a m Rl 31 Test RUNN NG Ene eee SR EE 34 Operation amm M UG EEE EEE gt gt ENG EEE 35 Function of 99 i Wm 35 Display dE RUE nt Go al bt sp st 39 Self diagnosis FN e C 39 Remote Control Operations 40 Disassembly l 41 jpeg m 41 Troubleshooting aa 44 Refrigeration Cycle Diagram ae ee ee ae ee eer eee 44 2 Way Way 45 lg tac a E EE NN NE 51 FP 52 Schematic Diagram n 62 Electric MI 62 MT 65 Components Locations RE RR 67 Product Specifications M 72 Exploded e 74 Re
8. 3854A20393W Models 18k H P 24k C O H P z m zo MAIN PCB LNOO NO zmo mzr ZO 0 RY COMP B HOOQNI OL 3 4 RY COMP A 3 4 ASTNO 3dld1nO NO ZHL NO BK YL T BLOCK1 SUB PCB U3MOd EBY30540501 Service Manual 67 Schematic Diagram Component B Indoor MAIN P W B ASSEMBLY e TOP VIEW CT CN OPTION R141 RISC e o PCB 6870A90409A K3 ASSY 6871420771A 5 BOTTOM VIEW Sava O e ese l m i us E E i mm p_a 8vH_ 3 0019 asoa a zo 2 aua awa Moar d ee ee exe 31058 HHHH 2 Em m mm 9 ER m e e e i E 68 Air Conditioner Schematic Diagram il Outdoor 9k 12k e TOP VIEW PCB 6870A90706A ASM 6871A20901A e i eO Coe N i v m 2
9. o zo 10 ac ele efe s we MA badet LLL vie vie ZEEE os 9200 8 i Bi be gg o T AB uui B Es Jer l T an AS osnoo BUND ele ne gt mu I me os 6 vicos ja eve jr DEV SS qe 8 1 ozz a v posee 0 agal 5eoovezooszdan e D Ma Wik TL it IN cl 207 O EED z SY E Jr E 9 a S Mo Vus ICT rm Ew a no zlz 715 CAES EN m ih GE EG E lt OOZMNS 31028 inse O d NO as 3v v00S9QIx A v d S l a WLOO ABE sls ON PES ter INO a sivi e z rar r riepa TO V V V V V V V I i EE 95490893 for n Z Ep st ST gm zz AAT y ET Ad sa gt 3008 R Et TA m e 3 Qu ED Pu QT NS Nuog an no oxi Dol YOLOW DNIGdALS 2 OL O ATL 8 6 ozmvns e s z e lele 3 sepa ud o avd LEY 1 5 g 62 Room Air Conditioner Schematic Diagram E Outdoor 9k 12k passion TN AE AT 29080 e Pi Wood il Eus 15NVAL A s Hn SENAI mo ul E red omn 390 px
10. Drill a Hole Th L Jain Pe Drill the piping hole with a 70mm 2 76in hole core drill Drill the piping hole at either the right or the left with the hole slightly slanted to the out door side Left rear piping i 5 d Installation plate 70mm Right rear piping Indoor WALL Outdoor 5 7mm 0 2 0 3 Service Manual 19 Flaring Work Main cause for gas kje 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 O r L door unit i ante neven Roug 3 Cut the pipes a little longer than measured distance D D i LJ 4 Cut the cable 1 5m 59 1in longer than the pipe length x Burrs removal 1 Completely remove all burrs from the cut cross section ON Pipe Reamer of pipe tube 2 Put the end of the copper tube pipe in a downward direction as you remove burrs in order to avoid drop ping burrs into the tubing Point down 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
11. LG LG website http www lgservice com Room Atr SERVICE MANUAL MODELS LSN090CE LSN120CE LSN180CE LSN240CE LSN090HE LSN120HE LSN180HE LSN240HE LSU090CE LSU120CE LSU180CE LSU240CE LSU090HE LSU120HE LSU180HE LSU240HE 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 Safety Preca ti ons Genser 3 Dimensions n NM C cae eee ee 9 Symbols Used Im TEARS IVAN A me 9 NO UN ae 9 radi EE EE EE EEE 11 TE EEE ETA EA eS 14 Selection of the Best NON L ETE 17 Piping Length and PANNE 18 How to Fix Installation PV AUG ean POMA LUE IN IM 19 Dill Holen the Walls u u uu EU 19 Drain hose junction l 19 Flaring work and connection of piping I L n s n 20 Flaring EEE n T Um ere ce ere 20 Connection PN T 21 Connection of th PU ss sa Eisen pf aide cd Gia saya sa 26 Connecting the cable between indoor unit and outdoor unit sse 27 Connect the ER EEE 27 Checking the drainage and forming the
12. Stopping partway will allow the gas to be discharged f 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 49 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 temperature into the equation Operating Suction Pressure For R410A According to Indoor amp Outdoor Temperature At operating the Unit for 10 minutes 13 I Q 2S 5 ag T 5 9 px g P O 5 10 15 20 25 30 35 40 In
13. 1750 61 7 Power cord AWG P mm 14 3 2 5 14 3 2 5 14 3 2 5 12 3 2 5 Fuse of breaker Capacity A 15 20 20 30 AWG P mm mm in mm in 18 4 0 75 6 35 1 4 9 52 3 8 18 4 0 75 6 35 1 4 12 7 1 2 18 4 0 75 6 35 1 4 12 7 1 2 Connecting Cable Connecting Tube Socket Flare 18 4 0 75 6 35 1 4 Liquid Side Gas Side 15 88 5 8 Length std m ft 7 5 25 7 5 25 7 5 25 7 5 25 Additional Drain Hose outer Dia mm in 15 5 5 8 15 5 5 8 15 5 5 8 15 5 5 8 Dimensions WxHxD Indoor mm 840 270 153 895 282 165 1090 300 178 1090 300 178 in 33 1 1610 5 8 6 1 32 35 211 1 5 42 1516 1113 167 1 32 42 1516 11 13 167 1 32 Outdoor mm 770 541 244 770 541 244 871 655 320 871 800 320 in 30 5 16 21 5 169 5 18 30 5 16 21 5 16 9 5 8 34 5 16 25 13 16 12 5 8 34 5 16 31 1 2 12 518 Net Weight Design and specifications subject to change without prior notice for product improvement Indoor 7 0 15 4 9 3 20 5 13 0 28 6 13 28 6 Outdoor 72 Room Air Conditioner 30 66 1 33 72 8 68 1 149 9 77 169 6 Product Specifications Cooling amp Heating
14. 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 It PCB Board Operation Check Items Content Remedy Power Transformer Outdoor unit Input Voltage About AC 208V AC 230V 10 Replace SMPS Output Voltage Check the power voltage Module 4b About DC15V 3 C01D 7812 Output e Replace IC01D Indoor Outdoor unit DC 12V lt 2 16020 7805 Output Indoor unit Replace IC04D 7805 Output Outdoor unit DC 5V IC02D Indoor unit 4 ICO4D Outdoor unit e ICO1A KIA7036 Reset IC Voltage of Outdoor unit Micom No 18 OSC01B 4MHz Voltage of Indoor unit Micom No 43 and Indoor Outdoor unit soldering condition Replace faulty parts Service Manual 53 Troubleshooting Guide The product is not operate with the remote controller Turn on Main Power iU While the compressor has been stopped the compressor does not operate owing to the delaying function for 3 minutes after stopped It low speed by force When the compressor stopped Indoor Fan is driven by 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 to the d V Cause by the remote controlle
15. RM i Ad t oO O E I M2 PUTES ae CN HEATER _NFOIM CN 4WAY _ 88 THE CN TAB N POWER 125V 3 15A RY COMP A Lg M e fe a 9 i od je O hd MODO ro m al 0 O O e 3 e oO O gt C10M 050 DOZM E O z T c Ly O T di QA en o o 2 1 5 Hwy ee Jor s CN MOTOR 8 6668 NIC Cowo ip o p RI3M w Er 9 CHAM P OBE oo Pid 86868 LL e BOTTOM VIEW mE Q Fond P Men CS iia 4 m O O4 6 O dB Q L exe ooo Qs O O O ora O e4re o x wroga o i O O Q si Owo 66665666 i wm OWE O O Service Manual 69 Schematic Diagram E Outdoor 18k 24k e TOP VIEW
16. 29 33 S E E R 13 13 13 13 Air Circulation m G min cfm 7 1 250 9 3 330 13 0 460 15 530 Moisture Removal I h pts hr 1 2 2 6 1 4 3 0 2 5 5 3 3 1 6 6 Noise Level Sound Pressure 1m Indoor High dB A 36 41 41 46 Med A 31 36 36 41 Low 28 34 35 38 Outdoor Max dB A dB A dB A 48 48 55 57 Features Temperature Control Thermistor themistor Thermistor themistor Air Deflection 4 way 4 way 4 way 4 way Steps Fan Cool 3 3 3 3 3 3 3 3 3 3 Air Deflection Control up amp down Auto auto Auto auto Air Deflection Control left amp right Auto auto Auto auto Remocon Type Wireless LCD Wireless LCD Wireless LCD Wireless LCD Setting Temperature Range Cooling Mode 64 86 64 86 F 64 86 F 64 86 F Temperature Increment 2 1 2 1 2 1 2 1 Auto Operation electronic control Yes Yes Yes Yes Self Diagnosis Yes Yes Yes Yes Timer 24hr On Off 24hr on off 24hr On Off 24hr on off Sleep Operation Yes Yes Yes Yes Healthy Dehumidification Mode Yes Yes Yes Yes Restart Delay minutes 3 3 3 3 Refrigerant R 410a Charge g oz 600 21 1 930 32 8 850 30 0
17. LEES QUEE o sa s S 5 gi BBB om HE dco e JE Ob B dh EE e i E GEO e gt e 2 e COMGND 15V Vm e e 8 8 8 Or O ee ee o eo z C09J at els oT cogs o e 70 Room Air Conditioner Schematic Diagram DISPLAY ASSEMBLY 6871A20681 PCB P No 6870A90240F 23323 8 8 18883838 o M PLASMA 88 O se LJ LEDM e o 9 338 RECEIVER 333 PCB ASSEMBLY P No 6871A20681 6871A20680 CECT PWB P No 6870A90240C 8 9 888 CN DISP1 8 8 8 8 E Ob LED_M PLASMA 88 RI SW_TACT PCB ASSEMBLY 68714 C 20680 E AE b p Service Manual 71 l Product Specifications Cooling Only Item Model Name LS090CE LS120CE Product Specifications LS180CE LS240CE Power Supply 1 115V 60 1 115V 60 1 230 208 60 1 230 208 60 Cooling Capacity 9 000 11 500 18 000 17 800 19 000 19 500 Input 780 1 150 1 940 2 250 Running Current 7 10 5 8 6 9 5 12 5 11 5 COMP Locked Rotor AMP 50 57 25 2
18. lows the arrow on the wrench Outside diameter Torque mm inch 26 35 1 4 1 8 29 52 3 8 4 2 12 7 1 2 5 5 215 88 5 8 6 6 219 05 3 4 6 6 26 Hoom Air Conditioner Outdoor unit Suction Line piping Bigger diameter 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 Wiring Diagram Connecting cable Low voltage Indoor Unit Outdoor Unit Power supply circuit er Ground 1 is neutral for 115V models 8 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
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20. Btu h Suction Evap m mi tt Amfi g mioz ft 9k 3 8 1 4 7 5 25 7 5 25 15 49 20 0 22 25 7 5 0 22 fak aet 1 4 7 5 25 7 5 25 15 49 20 0 22 18k 1 2 4 4 7 5 25 15 49 30 98 20 0 22 24k 5 8 1 4 7 5 25 15 49 30 98 200 0 22 30k 5 8 1 4 7 5 25 15 49 30 98 309 0 32 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 33 E 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 E Ancho
21. PARI SIS ge EAT LL Bp ze hv JAR Jeje PT eu 8 6 T ET HOSTNIN l NW109I A31 NI 64 Room Air Conditioner B Indoor Unit Models 9k 12k 18k 24k MAIN PWB ASM GN DISP1 CN DISP2 1 ICN 12V CN HVB Q O m 2 c O Q u Z LINN HOOGLNO OL i DISPLAY PWB ASM 3854A20427V Service Manual 65 Schematic Diagram Bl Outdoor Unit Models 9k C O WIRING DIAGRAM 00959 eg Im4 gt MI zole 2 gt YHIMOd 3854A20526A Models 12K H P 12K C O H P MOTOR I QOL razm ITAB N CN MOTOR LWOO NO MAIN PCB ma mr zo Uu A HOOQNI OL RY COMP 00 3 4 U3MOd CRANK CASE HEATER 66 Room Air Conditioner Schematic Diagram Models 18k C O WIRING DIAGRAM B B AATNO Adid LNO NO ZHL NO oe 2 gt 20 LAOO NO 2maA mr zo RY COMP B HOOQNI OL NdOSNVdX3 1109 BK goven T BLOCK2 4 WH 3 P Switch yy MG W
22. 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 46 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 3 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 higher pressure gauge of 50kg cm range Balance Refrigerant of the 3 way Valve Gas leakage Troubleshooting Guide Outdoor unit e 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
23. 24 Hoom Air Conditioner Reroute the pipings and the drain hose across the back of the chassis Piping for passage through piping hole Reroute the pipings and the drain hose across the back of the chassis Connecting cable t Drain hose 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 25 Connection Of The D 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 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 Pij 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
24. 3 way valve Liquid side 2 way valve MODEL DIM uni 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 Service Manual 11 Dimensions 2 18k 24k x alo oo AD SIA SA 90 oe i SS TC rz x2 xz r5 ORNS gt T r ail lt lt E S o o o o o O Q S S S S S S S S EE E E E E E E E E E E E E E EE E E E E E E No x von o 3 12 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 Features gt a Air Filter Front Panel Signal Receptor Air Intake Vents Piping Drain Hose Drain Hose Air Outlet Vents Base Plate Plate Service Manual 13 Installation n Installation Read carefully and then follow step by step Installation Parts Installat
25. ASSEMBLY 6323A20002L 6323A20002L 6323A20002L R 263230 2 THERMISTOR ASSEMBLY 6323A20016A 6323A20016A 6323A20016A R 430410 BASE ASSEMBLY OUTDOOR 3041AP2741G 3041AP2741G 3041AP2741G R 435300 GRILLE REAR 1A00208D 1A00208D 1A00208D R 435301 GRILLE DISCHARGE 3530A20007J 3530A20007J 3530A20007J R 435511 COVER ASSEMBLY CONTROL OUTDOOR 3551AR7184T 3551AR7184T 3551AR7184T R 435512 COVER ASSEMBLY TOP OUTDOOR 3H03266H 3H03266H 3H03266H R 437210 PANEL ASSEMBLY FRONT SUB 1A00197C 1A00197C 1A00197G R 447910 BARRIER ASSEMBLY OUTDOOR 4791A30004H 4791A30004H 4791A30004H R 55211G TUBE ASSEMBLY CONDENSER OUT 5211A34008B 5211A34008B 5211A34008B R 552203 1 VALVE SERVICE 2H02479B 2H02479B 2H02479B R 552203 2 VALVE SERVICE 5220A20013C 5220A20013C 5220A20013C R 546810 MOTOR UNCLASSIFIED 4681 A20008E 4681A20008E 4681A20008E R 549610 BRACKET ASSEMBLY MOTOR OUTDOOR 2A010351 2A010351 2 01035 R 550140 DAMPER COMPRESSOR 4H00982E 4H00982E 4H00982E R 552112 TUBE ASSEMBLY CONDENSER IN 5211A34007A 5211A34007A 5211A34007A R 552202 VALVE REVERSE 5220AR3228E 5220AR8228E 5220AR3228E R 552116 TUBE ASSEMBLY REVERSE 5211A24108B 5211A24108B 5211A24108B R 554160 1 COMPRESSOR SET KOREA 2520UGHK2AA 2520UGHK2AA 2520UGHK2AA R 554160 2 COMPRESSOR SET KOREA 2520UGKK2AA 2520UGKK2AA 2520UGKK2AA R 554031 CONDENSER ASSEMBLY BENDING 5403A20066F 5403A20066F 5403A20066F R 566000 SWITCH PRESSURE 6600L000013 6600L000013 6600L000013 R 559010 FAN ASSEMB
26. 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 P S 1 G 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 Operation l Operation Function of Cor DISPLAY 1 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 disconnection or short i
27. Operation C O Model If the Jet Cool key is input at any operation mode while in appliance operation the Jet Cool mode operates n 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 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 E 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 n 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 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 37 E Forced operation Operation procedures wh
28. Troubleshooting Guide Indoor unit ml Check valve Charging cylinder NY Gas side 7 Outdoor unit e 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 If 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 previous 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
29. 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 Drain pipe Indoor unit Spacer Installation plate 8cm Service Manual 21 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 725 02 A s Flare nut Pipings Indoor unit tubing Tighten the flare nut with a wrench Indoor unit tubing Outside diameter Torque mm inch 26 35 1 4 1 8 29 52 3 8 4 2 212 7 1 2 5 5 215 88 5 8 6 6 Mount the clamp on the boss with a type B screw SE H P 9k 12k 12k Type B screw q Clamp Boss G Drain hose When extending the drain hose at the indoor unit install the drain pipe Indoor unit drain hose Vinyl tape narrow Adhesive 22 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 t
30. pipe in a die in the dimen sion shown in the table above Outside diameter A mm inch mm inch 26 35 1 4 0 0 5 0 0 020 29 52 3 8 0 0 5 0 0 020 012 7 1 2 0 0 5 0 0 020 215 88 5 8 071 0 070 039 20 Hoom Air Conditioner Indoor 1 Prepare the indoor unit s piping and drain hose for installation through 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
31. 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 28 Hoom Air Conditioner Pour a glass of water the drain pan 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 Drain piping The drain hose should point downward for easy drain flow Downward slope Avoid these situations Accumulated Do not raise drain water Air Y h 1 Water Water Waving leakage leakage Waving Tip of drain hose Less than dipped in water 50mm gap ese Water leakage Ditch Service Manual 29 Forming The Pip 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 c
32. 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 51 Troubleshooting Guide Electronic 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 Main power s voltage Voltage applied to the unit cable e Check PWB Ass y Outdoor unit Fuse Pattern damage Varistor ZNRO1 J Connecting method of Indoor Outdoor connecting Check the voltage of power About AC 115V 60Hz Primarily the operating condition of Micom is OK Check each load Indoor Outdoor Fan Motor Compressor Stepping Motor and contacting condition of related connector including connecting cable of Indoor Outdoor Unit Check the connection housing for contacting Connector related to CN POWER Connector related to CN FAN Display PWB Ass y Check Connector related to CN DC DC Connector contacting o
33. 052B 5230A20052B 5230A20052B R 152312 FILTER ASSEMBLY 5231A20040B 5231A20040B 5231A20040B 5231A20040B R 159901 VANE HORIZONTAL 5990A20071A 5990A20071A 5990A20071A 5990A20071A R 249951 CONTROL BOX ASSEMBLY INDOOR 4995A10205B 4995A10205E 4995A10205E 4995A10205E R 263230 THERMISTOR ASSEMBLY 6323A20004N 6323A20004N 6323A20004N 6323A20004N R 267110 REMOTE CONTROLLER ASSEMBLY 6711A20128A 6711A20128A 6711A20128C 6711A20128C R 268712 PWB PCB ASSEMBLY DISPLAY 6871A20681F 6871A20681F 6871A20681D 6871A20681D R 268714 PWB PCB ASSEMBLY MAIN 6871A20771A 6871A20771D 6871A20771D 6871A20771D R 342800 BEARING 4280A20004A 4280A20004A 4280A20004A 4280A20004A R 346810 MOTOR ASSEMBLY INDOOR 4681AR2295M 4681AR2295M 4681AR2295M 4681AR2295M R 35211B TUBE ASSEMBLY TUBING 5211A21378C 5211421378D 5211A21378D 5211A21378D R 354210 EVAPORATOR ASSEMBLY FIRST 5421A20220A 5421A20220A 5421A20220A 5421A20220A R 359011 FAN ASSEMBLY CROSS FLOW 5901A92441E 5901A92441E 5901A92441E 5901A92441E R 668713 PWB PCB ASSEMBLY SUB 6871A20990G 6871A20990E 6871A20990D 6871A20990D R 733010 PLATE ASSEMBLY INSTALL 3301A20020B 3301A20020B 3301A20020B 3301A20020B R NOTE Please ensure GCSC since these parts may be changed depending upon the buyer s request GCSC WEBSITE http biz LGservice com Service Manual 79 Replacement Parts List Parts List Outdoor
34. 52202 VALVE REVERSE 5220AR3228D 5220AR3228D 5220AR3228D R 553000 HEATER SUMP 5300AR2915D 5300AR2915D 5300AR2915D R 554031 CONDENSER ASSY BENT 5403A20120A 5403A20221B 5403A20221B 5403A20221B R 554160 COMPRESSOR SET 2520UGDC2AA 2520UGAC2AA 2520UGAC2AA 2520UGAC2AA R 559010 FAN ASSY PROPELLER 5901 10033 5901 10033 5901A10033A 5901A10033A R 561410 SOLENOID 6141A90007C 6141A90007C R 566000 SWITCH PRESSURE 6600L000013 6600L000013 6600L000013 6600L000013 R 567502 O L P 6750U LO31A 6750U LO29A 6750U LO29A 6750U LO29A R 649950 CONTROL BOX ASSY OUTDOOR 4995A21006P 4995A21006Q 4995A21006Q 4995A21006Q R 668711 PWB PCB ASSEMBLY MAIN OUTDOOR 6871A20901A 6871A20901B 6871A20901B 6871A20901B R WOCZZ CAPACITOR DRAWING 0CZZA10001A 6120AR2359U 6120AR2359U 6120AR2359U R NOTE Please ensure GCSC since these parts may be changed depending upon the buyer s request GCSC WEBSITE http biz LGservice com 80 Hoom Air Conditioner Parts List Outdoor Replacement Parts List LOCATION DESCRIPTION baila REMARKS No LSU180CE 263230 1 THERMISTOR ASSEMBLY 6323A20002L R 263230 2 THERMISTOR ASSEMBLY 6323A20016A R 430410 BASE ASSEMBLY OUTDOOR 3041AP2741G R 435301 GRILLE DISCHARGE 3530A20007B R 435511 COVER ASSEMBLY CONTROL OUTDOOR 3551AR7184T R 435512 COVER ASSEMBLY TOP OUTDOOR 3H03266P R 437210 PANEL ASSEMBLY FR
35. 8 Bw t ER Flip up door opened Operation Mode Cooling Operation 3 UF Auto Operation or Auto Changeover A UF Healthy Dehumidification Operation Heating Operation Cooling Model Heat Pump Model 40 Room Air Conditioner 1 2 OPERATION MODE SELECTION BUTTON 10 11 12 13 14 15 16 17 18 INDOOR FAN SPEED SELECTOR START STOP BUTTON _ Operation starts when this button is pressed and stops when the button is pressed again Used to select the operation mode ROOM TEMPERATURE SETTING NN Used to select the room temperature Used to select fan speed in four steps amp low medium high and CHAOS CD JET COOL Used to start or stop the speed cooling speed cooling _ operates super high fan speed in cooling mode CHAOS SWING BUTTON Used to stop or start louver movement and set de the desired up down airflow direction C ON OFF TIMER BUTTONS a Used to set the time of starting and stopping operation See page 22 TIME SETTING BUTTONS Used to adjust the time See page 22 TIMER SET CANCEL BUTTON Used to set the timer when the desired time is obtained and to cancel the Timer operation See page 22 SLEEP MODE AUTO BUTTON Used to set Sleep Mode Auto operation See page 22 AIR CIRCULATION BUTTON Used to circulate the room air without c
36. ING 4280A20004B 4280A20004B 4280A20004B 4280A20004B R 346810 MOTOR ASSEMBLY INDOOR 4681AR2295L 4681AR2295L 4681AR2295L 4681AR2295L R 35211B TUBE ASSEMBLY TUBING 5211A21363A 5211A29044B 5211A29044B 5211A29044B R 354210 EVAPORATOR ASSEMBLY FIRST 5421A20218A 5421A20258B 5421A20258B 5421A20258B R 359011 FAN ASSEMBLY CROSS FLOW 5901A20017F 5901A20017H 5901A20017H 5901A20017H R 668713 PWB PCB ASSEMBLY SUB 6871A20990B 6871A20990F 6871A20990C 6871A20990C R 733010 PLATE ASSEMBLY INSTALL 3301A20020C 3301A20020A 3301A20020A 3301A20020A R NOTE Please ensure GCSC since these parts may be changed depending upon the buyer s request GCSC WEBSITE http biz LGservice com 78 Hoom Air Conditioner Parts List Indoor Replacement Parts List LOCATON DESCRIPTION REMARKS No LSN180CE LSN240CE LSN180HE LSN240HE 131410 CHASSIS ASSEMBLY 3141A20020G 3141A20020G 3141A20020G 3141A20020G R 135311 GRILLE ASSEMBLY DISCHARGE INDOOR 3531A20252Y 3531A20252Y AEB30240201 AEB30240201 R 135312 GRILLE ASSEMBLY FRONT INDOOR 3531A23005R 3531A23005R 3531A23005R 3531A23005R R 135516 COVER ASSEMBLY MOTOR 3551A20154A 3551A20154A 3551A20154A 3551A20154A R 146811 MOTOR ASSEMBLY STEP 4681A20055A 4681A20055A 4681A20055A 4681A20055A R 152302 FILTER MESH 5230A20052B 5230A20
37. Items Unit LS090HE LS120HE LS180HE LS240HE Power Supply 0 V Hz 1 115V 60 1 115V 60 1 230 208 60 1 230 208 60 Cooling Capacity BTU h 9 800 11 500 19 000 19 500 22 100 22 500 Heating Capacity BTU h 9 800 11 500 19 000 19 500 22 100 22 500 Input Cooling W 980 1 150 2 250 2 250 Heating W 980 1 150 2 700 2 700 Running Current Cooling A 9 5 10 5 12 5 11 5 12 5 11 5 Heating A 9 5 10 5 12 5 11 5 12 5 11 5 COMP Locked Cooling A 57 57 29 33 29 33 Rotor AMP Heating 57 57 29433 29 33 S E E R 13 13 13 13 H S P E 7 8 78 7 8 78 Air Circulation m min cim 9 3 330 9 3 330 15 530 15 530 Moisture Removal I h pts hr 1 4 3 0 1 4 3 0 3 1 6 6 3 1 6 6 Noise Level Indoor High dB A 41 41 46 46 Sound Med dB A 36 36 41 41 Pressure 1m Low dB A 34 34 38 38 Outdoor dB A 48 48 57 57 Features Temperature Control themistor themistor themistor themistor Air Deflection 4 way 4 way 4 way 4 way Steps Fan Cool Heat 3 3 3 3 3 3 3 3 3 3 3 3 Airflow Direction Control up amp down auto auto auto auto Airflow Direction Control left amp right auto auto auto auto Remocon Type Wireless LCD Wireless LCD Wireless LCD Wireless LCD Setting Temperature Range Cooling Mode 64 86 F 64 86 64 86 F 64 86 F Heating Mode 60 86 F 60 86 F 60 86 F 60 86 F Temperature Increment 2 F 1 C 2 F 1C 2 F 1 C 2 F 1C Auto Operation electronic control Yes Yes Yes Yes Self Diagnosis Yes Yes Yes Yes Timer 24hr on off 24hr on off 24hr on off 24hr on o
38. LY PROPELLER 1A00195B 1A00195B 1A00195B R 567502 1 OVERLOAD PROTECT 6750U L048A 6750U L048A 6750U L048A R 567502 2 OVERLOAD PROTECT 6750U L035A 6750U L035A 6750U L035A R 561410 SOLENOID 6141AR3733R 6141AR3733R R 649950 CASE ASSEMBLY CONTROL OUTDOOR 4995A20383L 4995A20383L 4995A20383L R 668711 PWB PCB ASSEMBLY MAIN OUTDOOR 6871A10184F 6871A10184F 6871A10184F R WO0CZZ 1 CAPACITOR DRAWING 6120AR2194F 6120AR2194F 6120AR2194F R W0CZZ 2 CAPACITOR DRAWING 3A00988B 3A00988B 3A00988B R NOTE Please ensure GCSC since these parts may be changed depending upon the buyer s request GCSC WEBSITE http biz LGservice com 82 Hoom Air Conditioner P No 3828 20462 Printed in Korea
39. ONT SUB 3721A20005H R 437212 PANEL ASSEMBLY REAR OUTDOOR 3720AP0003D R 447910 BARRIER ASSEMBLY OUTDOOR 4791A30004K R 552119 TUBE ASSEMBLY CONDENSER OUT 5211A25034A R 552203 1 VALVE SERVICE 2H02479B R 552203 2 VALVE SERVICE 5220A20006A R 554160 1 COMPRESSOR SET KOREA 2520UGJK2AA R 554160 2 COMPRESSOR SET KOREA 2520UGAK2AA R 546810 MOTOR UNCLASSIFIED 4681A20013N R 549610 BRACKET ASSEMBLY MOTOR OUTDOOR 4960AP1361A R 550140 DAMPER COMPRESSOR 4H00982E R 552112 TUBE ASSEMBLY CONDENSER IN 5211A25033A R 554031 CONDENSER ASSEMBLY BENDING 5403A20058B R 566000 SWITCH PRESSURE 6600L000013 R 567502 1 OVERLOAD PROTECT 6750U LO39A R 567502 2 OVERLOAD PROTECT 6750U LO58A R 559010 FAN ASSEMBLY PROPELLER 1A00195B R 649950 CASE ASSEMBLY CONTROL OUTDOOR 4995A20383M R 668711 PWB PCB ASSEMBLY MAIN OUTDOOR 6871A10184C R woczz 1 CAPACITOR DRAWING 3A00988B R WOCZZ 2 CAPACITOR DRAWING 6120AR2194D R NOTE Please ensure GCSC since these parts may be changed depending upon the buyer s request GCSC WEBSITE http biz LGservice com Service Manual 81 Replacement Parts List Parts List Outdoor LOCATION PART No DESCRIPTION REMARKS No LSU240CE LSU180HE LSU240HE 137213 1 PANEL ASSEMBLY SIDE 1A00202F 1A00202F 1A00202F R 137213 2 PANEL ASSEMBLY SIDE 3A02284Y 3A02284Y 3A02284Y R 263230 1 THERMISTOR
40. Type STOW 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 Model Power source ANG E t 9K 19 115V 14 18 15A TK 10 115V 14 18 20A T8K 119 230 7208V 14 18 20A 24K 19 230 208V 12 18 25A Outdoor unit Terminal block Conduit panel Connecting cable Power supply cord Cover control Service Manual 27 A 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 that 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
41. above checks Confirm the assembly conditions that are catching and interfering parts in the rotation radial of the Vertical Louver 58 Room Air Conditioner Troubleshooting Guide When a comunication 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 59 Troubleshooting Guide The phenomena in case of connecting error INDOOR UNIT Connector Type Condition Phen
42. door 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 50 Hoom Air Conditioner Troubleshooting Guide Cycle Parts 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 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 Hn Defective 4 way reverse
43. e 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 32 Hoom Air Conditioner Suction Line 3 way valve Close 3 way valve Open Pressure gauge Charging ll Each outdoor unit is factory charged nameplate charge for the evaporator as well as a 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 E 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 30g 0 320z of R 410A per meter foot Pipe Size Standard Max Additional Capacity Length Elevation length Refrigerant
44. eable installation Service Manual 17 Piping Length Capacity Pipe Size je sata Additional Refrigerant Btu h Suction Evap mit mf gm ozif 9k C O 3 8 1 4 7 5 25 7 5 25 15 49 20 0 22 9k H P 12k 1 2 1 4 7 5 25 7 5 25 15 49 20 0 22 18k C O 1 2 14 7 5 25 15 49 30 98 20 0 22 18k H P 24k 5 8 1 4 7 5 25 15 49 30 98 30 0 32 lt Outdoor unit Outdoor unit Indoor unit Q In case more than 5m 16 4ft 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 18 Hoom Air Conditioner 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 Grade A B 54 50 105 59 105 SE 65 110 85 110 55 95 122 235 122
45. ealth issues injury B Disuse Do not recharge or disassemble the batteries Do If the liquid from the batteries gets onto your skin not dispose of batteries in a fire or clothes wash it well with clean water Do not use the remote if the batteries have leaked They may burn or explode The chemicals in batteries could cause burns or other health hazards 8 Hoom Air Conditioner E Dimensions This symbol alerts you to the risk of electric shock Dimensions A This symbol alerts you to hazards that could cause harm to the air conditioner This symbol indicates special notes 9k Btu Series Model reg C O 9k MP es 12k Btu Series W mm inch 840 33 1 894 35 2 894 35 2 H mm inch 270 10 6 295 11 6 295 11 6 D mm inch 153 6 0 165 6 5 165 6 5 Service Manual 9 Dimensions Installation plate 8 S lola 0 la a o 2 TIE XE A 2 e lem A 09 e r a EEE gt a E EIE E EIE Z 10 Room Air Conditioner Dimensions 1 9k 12k Gas side
46. em UNES Lan 6 7 165 024 1 TET 4 c 1988 ov rE 1 ele TIVDAB gt 1531 m Sid DE KEKE AS Od AM 226 zs E zy 1 OSENIN WLOO SbHOLB8dWL A31 N3 Pa ASI 3 GET WOOIW 01 XH Age 9508 1e0 27090 63 Service Manual E Outdoor 18k 24k Di 062 nn nmxy vet Seni woos w da cedease 000 hosel We mers T RD GSADN R1 NO AP lL qunm Ea E tar xl Lo 196 ve Ll RNE xui d 86 Eh gis e H wild T ups el 228 1 SE mu AM 5 i av a84ns9rtoq DERO woga WEOT NvOSI KE u una AT 3 gt lt an aan QDdWI2 A8N 19 nor il 2 3 d9E0 aoo 0 m V103 001 vE03 V E a YL vela sen 3atd 1n8 se PE 100 3gld 1NO0 NI z z HE H o oj uus AS i gt 22 sa In i ts Vi NEO
47. emove 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 42 Hoom Air Conditioner 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 a 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 43 Troubleshooting Guide Troubleshooting Guide OUTDOOR UNIT CAPILLARY TUBE HEAT EXCHANGE EXCHANGE EVAPORATOR CONDENSER COMPRESSOR GAS SIDE 2 Cooling amp Heating Models INDOOR UNIT OUTDOOR UNIT cw E CHECK VALVE Heating Model only lt 0000 CAPILLARY TUBE LIQUID SIDE EXCHANGE EVAPORATOR CONDENSER e i D c p REVERSING ACCUMU VALVE LATOR O ENS Heating Model Only COMPRESSOR COOLING HEATING 44 Hoom Air Conditio
48. en the remote 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 75 2F Room Temp lt 21 C 69 8 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 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 in 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 E 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 E Protection of the evaporator pipe from frosting If the indoor pipe temp is below 0 in 7 min after the compressor operates without any pause while in co
49. ersely 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 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 Oo The beep sound such as 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 D G 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 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 alone for long time Con
50. f Outdoor Fan Compressor lc PCB Board Operation Check Items Content Remedy Power Transformer Outdoor unit Input Voltage About AC115V 10 Check the power voltage e Replace SMPS Output Voltage About DC15V 3 Module lt IC01D 7812 Output DC 12V Replace IC01D Indoor Outdoor unit lt e IC02D 7805 Output Indoor unit DC 5V Replace IC03D 7805 Output Outdoor unit IC02D Indoor unit ICO3D Outdoor unit ICO1A KIA7036 Reset IC Voltage of Outdoor unit Micom No 18 OSC01B 4MHz Voltage of Indoor unit Micom No 43 and Indoor Outdoor unit soldering condition Replace faulty parts 52 Room Air Conditioner Troubleshooting Guide Electronic Parts Product does not operate at all Refer to Electronic Control Device drawing and Schematic diagram Turn off Main Power IE After 20 seconds Turn on Main Power Does beeping sound is made from the Indoor Unit Check the voltage of power About AC 208V AC 230V 60Hz Primarily the operating condition of Micom is OK Main power s voltage Voltage applied to the unit Connecting method of Indoor Outdoor connecting cable Check PWB Ass y Outdoor unit Check each load Indoor Outdoor Fan Motor Flies Compressor Stepping Motor and contacting Pattern damage a of related connector including connecting Varistor ZNRO1J cable of Indoor Outdoor Unit
51. ff Sleep Operation Yes Yes Yes Yes Healthy Dehumidification Mode Yes Yes Yes Yes Restart Delay minutes 3 3 3 3 Defrost Control Yes Yes Yes Yes Hot Start Yes Yes Yes Yes Refrigerant R410A Charge 0 02 930 32 8 930 32 8 1750 61 7 1750 61 7 AWG P mm 14 325 14 3 2 5 12 3 2 5 12 3 2 5 Fuse or breaker Capacity A 20 20 30 30 Connecting Cable AWG P mm 18 4 0 75 18 4 0 75 18 4 0 75 18 4 0 75 Connecting Tube Liquid Side mm in 6 35 1 4 6 35 1 4 6 35 1 4 6 35 1 4 Socket Flare Gas Side mm in 12 7 1 2 12 7 1 2 15 88 5 8 15 88 5 8 Length std mift 7 62 25 7 62 25 7 62 25 7 62 25 Additional Drain Hose Outer Dia mm in 15 5 5 8 15 5 5 8 15 5 5 8 15 5 5 8 Dimensions Indoor mm 895 282 165 895 282 165 1090 300 178 1090 300 178 WxHxD in 35 2 11 1 6 5 35 2 11 1 6 5 42 15116 11 131167 1 32 42 5116 11 13 167 1 32 Outdoor mm 770 540 245 T10 541 244 770 541 244 871 800 320 871 800 320 in 30 5 1621 5 169 5 8 30 5 16 21 5 16 9 5 8 34 5 16 31 1 2 12 5 8 34 5116 31 1 2 12 5 8 Net Weight Indoor kg lbs 9 3 20 5 9 3 20 5 13 28 6 13 28 6 Outdoor kg lbs 33 72 8 33 72 8 33 72 8 77 169 6 77 169 6 Design and Specifications subject to change without prior notice for product improvement Service Manual 73 Exploded View j Exploded View Indoor Unit 74 Room Air Conditioner Exploded View Outdoor Unit 9k 12k Btu h Seriess
52. here is no gap Plastic bands Insulation material PT UU see UC Wrap the area which accommodates the rear piping housing section with vinyl tape Connection Indoor pipe unit pipe Vinyl 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 Drain hose 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 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 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
53. ing 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 OO Charge hose Nitrogen gas cylinder in vertical standing position Service Manual 31 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 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 valv
54. ion is carried out regardless of the above condi tion When the indoor pipe temp is 42 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 36 Room Air Conditioner Operation E 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 C 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 E 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 E Jet Cool Mode
55. ion plate Type A screw and plastic anchor SESS SS ALALLA Type B screw Remote Control Holder TT Figure Figure EE e Screw driver Electric Drill Ohmmeter Hexagonal wrench Measuring Tape Knife Ammeter Hole Core Drill Gas Leak Detector Spanner Thermometer Level Torque wrench 14 Room Air Conditioner Flaring Tool Set Installation Installation Map NOTICE Installation parts you should purchase Installation Plate Sleeve Bushing Sleeve 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 Gas side piping Liquid side piping Additional drain pipe CX Air Inlet Vents lt Air Outlet Vents Drain Hose Connecting cable Base Plate NOTE refrigerant line wall thickness must be at least 0 8 mm 0 031 inch Service Manual 15 Confirm The Refrigerant 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 Pol
56. les and moisture from the system 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 and 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 loosen
57. n 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 E 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 D Setting 0 5 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 E 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 lt Intake Air Temp 2 25 24 C lt Intake Air Temp lt 26 C gt Intake Air Temp 1 C 18 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 35 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 c
58. necting error Q 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 61 Schematic Diagram
59. ner Troubleshooting Guide 2 way Valve Liquid Side 3 way Val ve Gas Side Hexagonal wrench 4mm Flare nut Open position Closed position To piping connection To outdoor unit Valve cap Flare nut piping connection To outdoor unit Open position Closed position Service Service port cap port 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 Open Open Closed Penn 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 iai in Servicing Open Open masi 9 Gas releasing Open with han in Servicing Open Open Vindel Service Manual 45 Troubleshooting Guide Pumping Down Purge the air Outdoor unit e Procedure 1 Confirm that both the 2 way and 3 way valves are set to the open position Remove the valve stem lt confirm that the valve stems are in the raised posi tion Be sure to use a hexagonal wrench to operate the valve stems
60. 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 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 E 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 38 Room Air Conditioner Display Function 1 Heating Model Operation Indicator D Cooling Soft Dry Fan Heating Operation 2 Cooling Model Operation Indicator O 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 e Indoor room temperature Indoor Thermistor thermistor open short assembly check I 38sec gt lt 3sec gt lt 3sec gt Indoor pipe temperature thermistor open short Service Manual 39 Operation The controls will look like the following B transmitter P d zo 2 yI F HE LILI ED Y DAILY xX IT SR 8 8
61. om No 27 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 EE DC5V DCOV Between IC01M ICO2M No 9 Below DC 1V and ICO1M ICO2M No 8 app DEAN It Turn off Main Power It Check the electrical wiring diagram of outdoor side Check the abnormal condition for the component of Compressor Outdoor Fan Motor Service Manual 55 Troubleshooting Guide Compressor Outdoor Fan are unable to drive 18k Model Turn on Main Power d Operate Cooling Mode 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 n
62. omena CN DC DC Open and connecting error The same as the phenomenon of Outdoor Unit DODO Blue Black Brown Red The indoor fan does not operate Open 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 of ROOM TH The compressor operates continuously regardless of the setting temperature and the variation of room temperature Short between terminals The operation indicator blinks once and of PIPE TH on for 0 5 second off for 3 seconds Continuous operation 60 Air Conditioner OUTDOOR UNIT 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 functions stop Connecting rev
63. ompressor off repeat Compressor ON Temp 2 Setting 0 5 Compressor OFF Temp gt Setting Temp 0 5 C In 10 min dehumidification operation the indoor fan operates with the low airflow speed E Heating Mode Operation When the intake air temp reaches 3 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 when above 28 it operates with the low or setting airflow speed When the indoor pipe temp is between 20 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 opera 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 E 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
64. onds to the values in the table of page 56 Check the pattern and the condition of Indoor unit PWB Ass y NECTOR It Check the interference of Indoor Fan Q 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 x 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 57 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 e Confirm that there is DC 12V between pin RED of CN UP DOWN and GND Confirm that there is a soldering short at following terminals Between 60 6 62 and 63 of MICOM Between 3 and of ICO1M Between 3 43 44 Sof ICO1M Between 1 2 3 and s of CN UP DOWN a If there are no problems after
65. onnect 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 Taping Drain Trap is required to prevent water from entering into electrical parts 30 Room 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 E 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 lead 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 noncondensab
66. 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 operat
67. ooling or heating See page 23 ROOM TEMPERATURE CHECKING BUTTON Used to check the room temperature NEO PLASMA OPTIONAL Used to start or stop the plasma purification function See page 20 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 See page 21 AUTO CLEAN OPTIONAL Used to set Auto Clean mode C TO F SWITCHING BUTTON Used to switch temperature reading from Centigrade to Fahrenheit Disassembly l Disassembly 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 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 Service Manual 41 Disassembly 2 To remove the Control Box Remove securing screws Pull the control box out from the chassis carefully i 0 2 2 3 To remove the Discharge Grille Unhook the discharge grille and pull the discharge grille out from the chassis carefully 4 To r
68. ot engaged Compressor Outdoor Fan is stopped e Check the related circuit of RO2H 12 1K RO4H 6 2K Micom No 27 Indoor unit e Check the indoor temperature sensor is disconnected or not About 10 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 AC200V 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 Ee Ad ND DC5V DCOV Between ICO1M ICO2M No 9 Below DC 1V and ICO1M ICO2M No 8 app PEN D Turn off Main Power E Check the electrical wiring diagram of outdoor side Check the abnormal condition for the component of Compressor Outdoor Fan Motor 56 Hoom Air Conditioner When indoor Fan does not operate Troubleshooting Guide Does the voltage of each terminals of CN MOTOR CONNECTOR in Indoor unit corresponds to values in the Table of page 56 d E Does the voltage of terminal of CN DC DC CONNECTOR in Indoor unit corresponds to the values in the table of page 56 Check connecting condition of the CN MOTOR CON d Do the voltage of terminal of CN DC DC CONNECTOR in Outdoor unit corresp
69. placement Parts List En Ennet 78 2 Room Air Conditioner Safety Precautions Il 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 WARNING This symbol indicates the possibility of death or serious injury ACAUTION This symbol indicates the possibility of injury or damage to properties only E Meanings of symbols used in this manual are as shown below Be sure not to do Be sure to follow the instruction p WARNING B Installation Do not use damaged power For electrical work contact the Always use the power plug and cords plugs or a 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 electric 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 P
70. r Caused by other parts except the remote controller d When the mark 4 is displayed in LCD screen replace battery Check the contact of 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 d Check the connecting circuit between the remote controller MICOM No R17 2Q IR LED Q1 R16 2 2KQ MU Check DISP PWB Ass y Voltage between CN DISP 09 DC 5V It Check point 54 Room Air Conditioner Check the connecting circuit between PIN 43 R11L 1K C11L 680PF MICOM PIN Check Receiver Ass y Troubleshooting Guide Compressor Outdoor Fan are unable to drive 9k Model Turn on Main Power d Operate Cooling Mode 3k 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 stopped Check the related circuit of RO2H 12 1K RO4H 6 2K Mic
71. r the outdoor unit with a bolt and nut g 10mm 0 39in tightly and horizontally on a concrete or rigid mount E 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 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 34 Hoom Air Conditioner 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 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 35 8 5 9 5kg cm G 120 135 P S 1 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 Pump
72. recautions 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 E Operation Use a dedicated outlet for this appliance There is risk of fire or electric shock 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 It may cause injury accident or damage to the product There is risk of fire electric shock explosion or injury Aa US J m LN gt AYE Y Do not handle the pipe by your self customer Install the indoor unit on the wall where the height from the floors more then 8ft 2 4m There are sharp moving parts that could cause personal injury High Pressure refrigent may cause personal injury UAT 8ft 2 4m 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 Safety Precautions Do not place a heater or other Do not let the air conditioner run not s
73. t unnecessary damage to the wall 1 More than More than 12cm 4 7in 30cm 11 8in More than 30cm 11 8in Install the indoor unit on the wall where the height from the floors more than 2 3meters 7 6ft 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 not restricted 2 Ensure that the space around the back and sides is more than 10cm 3 9in 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 M More than 10cm 3 9in More than 10cm 3 9in 2 le ST More than than 70cm 27 6in A 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 servic
74. the pipings and sufficiently tighten the flare nut by hand ES D Flare nut Indoor unit tubing Pipings Tighten the flare nut with a wrench Spanner fixed Flare nut Torque wrench Connection pipe Indoor unit tubing Outside diameter Torque 6 35 1 4 1 8 9 52 3 8 4 2 212 7 1 2 5 5 215 88 5 8 6 6 Mount the clamp on the boss with a type B screw SE H P 9k 12k C O 12k Type B screw y Clamp Boss LO Drain hose When extending the drain hose at the indoor unit install the drain pipe 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 oC UC Service Manual 23 Wrap the area which accommodates the rear piping housing section with vinyl tape Connection Indoor 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
75. time when operating it togeth performing cleaning or mainte er with a stove etc nance There is risk of fire or electrical There is risk of electric shock shock Take care to ensure that nobody Do not insert hands or other could step on or fall onto the objects through the air inlet or outdoor unit outlet while the air conditioner is plugged in There could result in personal There are sharp and moving injury and product damage parts that could cause personal injury EQ Sx S Install the drain hose to ensure Keep level even when installing that water is drained away prop the product erly A bad connection may cause To avoid vibration or water leak water leakage age 6 Hoom Air Conditioner When the product is not be used for a long time disconnect the power supply plug or turn off the breaker There is risk of product damage or failure or unintended opera tion II A CAUTION Bi Installation Always check for gas refriger ant leakage after installation or repair of product Low refrigerant levels may cause product failure Do not install the product where the noise or hot air from the out door unit could damage the neighborhoods It may cause a problem for your neighbors Safety Precautions E Operation Use two or more people to lift Do not install the product where Do not direct airflow at room and transport the air conditioner it will be exposed
76. to sea wind occupants salt spray directly Avoid personal injury t may cause corrosion in the This could damage your health product Corrosion particularly on the condenser and evaporator fins could cause product mal function or inefficient operation Do not use the product for special Do not block the inlet or outlet Use a soft cloth to clean purposes such as preserving of air flow Do not use harsh detergents foods works of art etc It is a solvents etc consumer air conditioner not a precision refrigeration system There is risk of damage or loss of It may cause product failure There is risk of fire electric shock property or damage to the plastic parts of the product Do not touch the metal parts of not step on or put anything Always insert the filter securely the product when removing the the product outdoor unit Clean the filter every two weeks air filter They are very sharp or more often if necessary There is risk of personal injury There is risk of personal injury A dirty filter reduces the efficien and failure of product of the air conditioner and Service Manual 7 Dimensions Do not drink the water drained Use a firm stool or ladder when Replace all the batteries in the from the unit cleaning or maintaining the air remote conditioner It is not sanitary and could cause Be careful and avoid personal There is risk of fire or explosion serious h
77. tore of use flammable appliances near the power for a long time when the humidi gas or combustibles near the air cable ty is very high and a door or a conditioner window is left open There is risk of fire failure of the e Moisture may condense and wet There is risk of fire or product fail product and or electric shock or damage furnishings ure Do not use the product in a When flammable gas leaks turn off Unplug the unit if strange tightly closed space for a long the gas and open a window for venti sounds odors or smoke comes time lation before turning the product on from it Do not use the telephone or turn switches on or off Oxygen deficiency could occur There is risk of explosion or fire There is risk of fireproduct failure Some ventilation by opeing win and or electric shock dow is necessary for the fresh air Stop operation and close any Do not open the inlet grill of the When the product is soaked window in storm or hurricane product during operation Do flooded or submerged contact before the hurricane arrives not touch the electrostatic filter Authorized Service Center if the unit is so equipped There is risk of property damage There is risk of physical injury There is risk of electrical shock failure of product or electric electric shock or product shock Service Manual 5 Safety Precautions Ventilate the product from time Unplug the appliance before to
78. 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 47 Troubleshooting Guide Evacuation All amount of refrigerant leaked Outdoor unit e 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 48 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 after 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
79. yol 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 s 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 80 60 40 20 0 R 410A 100 7096 50 30 0 R 22 0 30 50 70 100 4 High pressure 1 6 times higher than R 22 High Pressure refrigerant may cause personal injury Boiling Pt C Vapor 25 f cnf Vapor density 25 C kg m R 410A 51 4 15 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 16 Room 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 12cm 4 7in from ceiling A CAUTION 6 Use a stud finder to locate studs to preven

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