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Owner`s Manual (General)

1. Bad case Following bending type from left to right may cause damage to the turbing 22 Hoom Air Conditioner Connection of F 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 Finally tighten the flare nut with torque wrench until the wrench Clicks e When tightening the flare nut with torque wrench ensure the direction for tightening follows the arrow on the wrench Outside diameter 180 250 340 420 550 660 630 820 980 1210 Flaring work and connection of piping Outdoor unit Liquid side piping Smaller diameter Gas side piping Bigger diameter Torque wrench Service Manual
2. NOTE Please ensure GCSC since the replacement parts may be changed demending upon the buyer s request Please check the correct parts in View RPL Replacement Part List on GCSC GCSC Website http biz Lgservice com 72 Room Air Conditioner Exploded View 2 Outdoor Uni 43721 52113 67480 SUCTION NOTE Please ensure GCSC since the replacement parts may be changed demending upon the buyer s request Please check the correct parts in View RPL Replacement Part List on GCSC GCSC Website http biz Lgservice com Service Manual 73 Replacement Parts List Replacement Parts List Parts List Indoor LOCATION No DESCRIPTION PART No LAN091CNP 090 ASNC091F2G0 LANO91HNP LAO90HPI ASNH091F2G0 LAN121CNP LA120CPI ASNC121F2G0
3. ZH AOS AS2 001 161000 L L 471000 062T 905 503 WEO w203 Wor i AOOT 7 AS T 37100 I 3 002 el W609 ATTS WIOdZ WEOD M 908 T 0222452 MOOT MTOE W800 3 AT NTO J Zv00 0 8VL N2 W209 RI TEONNZ FZ0NNZ 012 602 ag B0 vP gN3 p E iT 2 Ka neod E W909 woa Woa HON Ysa C 8 8 Jnozz B J TRU g 5 Ma 8 R agi lt 89 B 8 T A WI EM 4i Ae NORE E 9 T Hust 2 T 4 1 t 4 asna 4 gt 1 87 91 2 206 2 Sun TSNVSL 0 0 III Y EP MEUM 3 B 8 09978155 w207 021 day WIOT amp INS WIOG WIOO HOIH 20 cata snr 4H 4604 wh 5j uoj 5 EDU JM AS 37 e lo 3008 BA d992ANL pas ui 39V10 ASZ ton B DALT 2d 2700 3 noo La 42001 azoo L m T I wl m ra 4200 wt wer 4104 Y dno iy N iio anos Ly WioTva _ 4 1 d dl 1 02 11 il 09 H 2 4 6
4. Ub derat su rea D ERU RU 17 wibdjafs Wel ale ore gh dar cr EET 18 Flaring work and connection piping 19 gc ie ERE Ere 19 Conneccion or pipino Ndo sectae t a a 20 iNe NOSE a e 21 Giorgi Ul AS olo Qo G Vifeonre ERE M S 23 Connecting the cable between indoor unit and outdoor unit ssssseeennnn 24 Connect the cabletoahe IBdoOor ae 24 Connection method of the connecting 25 Checking the drainage and forming the 65 26 Checking 6 ud tse 27 T TN EE 28 AIR PURGING 29 Ar pudin 29 NING 31 COIN sed POUR I NIORT RAO RN 32 33 How to replace picture amp photograph 35 at eter ae Sere ede
5. Note 0 cgi s For circuit breaker rating please conform to local standards wherever necessary No relation x Some of functions are slightly different depending upon models x The specification may be subject to change without notic for purpose of improvement Service Manual 11 Installation Installation Read carefully and then follow step by step Installation Parts Installation guide map Type A screw and plastic anchor eae C Screw driver Ohmmeter Hexagonal wrench Electric drill Ammeter Measuring tape Knife 92 Hole core drill Leak detector gt Thermometer Cn Horizontal meter Torque wrench cB Flaring tool set 12 Room Air Conditioner Installation More than 7 9 20cm More than 19 6 50cm Left and right are identical Sleeve CX Bushing Sleeve CX Putty Gum Type Sealer C Bend the pipe as close as possible on the wall but be careful so that it may not break Vinyl tape Wide o carry out the drainage test remove the air filter and pour water into the heat i exchanger FT saddleC9 HE Apply after carrying out a drainage test 4 More than 5 LJ 23 6 60cm More than 11 8 30cm SS SSN Gas side piping Optional part n nts A More than SEL VY drain pipe CX
6. coso com 3 RENE 5 O e 9 C O8 e 8 2 Ses R13M OO 88 N NAG 9 R14M 5 C14M oS m CN LEV Bottom View 88 gB EE E YAWRB MO LTORVS Q Q O 6505 o d e o OO o JU 4 8M02 Yi OOo OwO LEORMN MEO e C C 9 e O O Q doU g gg Mroo Msoa p tenaa me o 0 O OO lt Ox EO woo D E gi gt a 5 Q Q D O 8 a 5 Q O O O a O H KO O D 4 a OXO _ Cy s CP ee f ib 5 E Hs 9 Q Q g 59 ES 1 n age 22 3 5 8 O O 5 5 5 z FWY ag BAT VO O O O 2 O pica O ES 00000000 ae S B EO 0 Ds
7. M vues 36 PORCION RR SIRE IE m 36 T THE TEMG ING OMRON E ene ideas oa enue vice 37 DISDIaV FUNCION ule dentiste t Meetic aenean omi ME 43 DE miUia e OM EE DD 43 Remote Control Oo EE m E E 44 M 45 di XA 45 T 47 Heal Purrp Geoling Only Series Indoor Unit poe Eo E Put ain md RA 47 Heal OUtdoor UNI mr M 48 INDOOR UNITP WN B ASSEMBLY iie dott aa 49 OUTDOOR UNIT P W B ASSEMBLY itn atten ne turre tte aene teda 50 aac indes 51 Wining nd ipid 52 Tro bl shooling quie uda aus Meester teet 54 RETHOSTAUON Cyce 2 54 Pipe lengthiarid the elevatio sosse erene ee 55 SEV MP 56 EM E KT 62 Ria e 63 EXDIOGEA
8. VIP C084 S 30 Dum OLOW 290 cambie 14 4 9 sls aol aeda lt 4 HM NYJ La Sot en 330 3 am zi 1 Lt nm A az 130 N0 NV gt dd ZW PE Agee L Meus Moe 2 Sans an Ll 1 nsun 2 t 3102 22 tiog 30100 49607 91091 ATE 20 trag 9109 Oor YEON HM LS010A NO 7 0 8159 LW ASILW MALW3H NO 6 8 0950 gt 208 Ten LIL Acz o Lo 4 47160 I E Hv02 VL NSO LL SSA SSVA Oldor dor V3H AN 05 4 AS oa 1531 iz HoH gt LL Nix OC 4 NOlldO A31 NO 1 929292929 GIDDG1nD 3dld 9 9 amp 10 1 o2o2s2u2m ve 1 61 WIO3N LNIV L9d AYMy NO C C Pw Sc 13535 81 zNIV zed gt 0 4 9c 1583144 ZL VL NSO 72 91 mn gt 00d 029 963 2HL N2 dio 4nto o zl SU 1591 T er i 1 SNIV G9d 04 60 401 Do 6z yal vl ANNA L4 193 212 C9 S 9NIV 99d 20 26034 cie OL jJ 10 0 s 0 l A AAH CAS 20 9 o T 8 HION 102 ZNIV Z9d 03 LOM 68 4307 40 Le 19 ZL 4 CAWLLn
9. n OAK Os Loro 1255 F ge E O ai 3 ti O 6 0 ap S TOL 5 e aD Os Es m 8 6 oof 8 2 om 55 B amp i 5 Q 5 G O 0 9 O O ORA O 9 ep T 8050 w E gt Qn DOJD a 8 COSD MOOM uut ele amp 00000000 888858868868 c I 6 asoa i 8 00000000 Bere O HOO 22392222223 9 Qeon 8 88888888834 TD e BIW 29M2 OO Q Q Q is 5 O m 50 Hoom Air Conditioner Schematic Diagram DISPLAY P W B ASIV e P No 6871A20921A PCB ASSEMBLY EE 2777772 ff PCB ASM6871A20921 55 p COLA vd T gt G ML NM CN DISP VV A 3 PWB6870A9072948 JJ Service Manual 51 Schematic Diagram Z CN DC DC TO OUTDOOR UNIT Di rcp cs 17 CONNECT SSAKEIYSWITI PCB ASM INDOOR WIRING DIAGRAM 3854A20379Q 52 Hoom Air Conditioner Schematic Diagram 2 Outdoor Unit Cooling Only Models amp Heating Models
10. case of nothing wrong connect the pipe and the wire Refer to installation manual Drill the piping hole with a g 50mm hole core drill WALL Drill the piping hole at either the right or the left with the hole slightly slanted to the outdoor side 18 Room Air Conditioner Flaring work and connection of piping Flaring work and connection of piping Flaring W Main cause for gas leakage is due to defect in flaring work Carry out correct flaring work in the following procedure Cutting 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 outdoor unit 3 Cut the pipes a little longer than measured distance 4 Cut the cable 4 9ft 1 5m longer than the pipe length Removing burrs 1 Completely remove all burrs from the cut cross section of pipe tube 2 Put the end of the copper tube pipe in a downward direction as you remove burrs in order to avoid dropping 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 1 Firmly hold copper pipe in a die in the dimension shown in the table below 2 Carry out flaring work with the flaring tool Outside diameter Copper pipe Hed arrow mark 012 7 1
11. WIRING DIAGRAM MAIN PCB zm mr 200 j O 22 JJ S W ey CRANK CASE HEATER 3854A20379R Service Manual 53 Troubleshooting Guide Troubleshooting Guide Refrigeration 1 Cooling Only Models INDOOR UNIT OUTDOOR UNIT CAPILLARY TUBE HEAT EXCHANGE EXCHANGE EVAPORATOR CONDENSER COMPRESSOR GAS SIDE 2 Cooling amp Heating Models INDOOR UNIT OUTDOOR UNIT 8 CHECK VALVE LIQUID gt lt 4 7000 d ai 0000 CAPILLARY TUBE HEAT HEAT EXCHANGE CONDENSER 4 GASSIDE 4 uq Y 7 gt lt gom REVERSING VALVE CE COMPRESSOR COOLING lt HEATING 54 Room Air Conditioner Troubleshooting Guide Pipe Size Standard Max Additional Capacity Length Elevation Refrigerant Btu h suction Evap m It B m ft 9k 12k Q127mm t 2 6 35 14 7 5 25 7 5 25 20 0 22 Indoor unit Outdoor unit Outdoor unit Oil trap EN 6 Indoor unit Outdoor unit Indoor unit If piping length is more than 16 4ft 5m CAUTION Capacity is based on standard length and maximum allowance length is on the basis of reliability Oil trap should be installed every 16 4 23feets 5 7 meters Service Manual 55 Troubleshooting Guide Pump
12. website http www lgservice com NE Room Air Conditioner SERVICE MANUAL MODELS LAN091CNP ASNC091F2G0 LAU091CNP ASUCO91FUGO0 LAN121CNP ASNC121F2G0 LAU121CNP ASUC121FUGO LANO91HNP ASNHO091F2G0 ASUHO91FUGO0 LAN121HNP ASNH121F2G0 LAU121HNP ASUH121FUGO LAO90CPI 6 091 2 0 1 090 ASUC091FUGO 1 120 6 091 2 0 1 120 ASUC091FUGO LAO90HPI ASNH091F2G0 1 090 ASUHO091FUGO 1 120 ASNH121F2G0 1 120 ASUH121FUGO 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 Salety us 3 DIMENSIONS EDT 9 Symbole Used inthis Mabillonius d etti tate 9 di B In prc M Tome 9 TT per 10 Product SpeciIICatlons E as te deus 11 lere M 12 NSW AN BO EO 12 MAAU 80 etc MTM 12 HM TSU AWN OA tercero cR UTE 13 EUER 14 Select INE DEST LOCATIONS pce ono dus scusa Dalm 15 PENGEN MAn EEVA 16 Preparnng Work TON IIS Te WALOMN
13. 2 Se 4 Power Supply Cable No n 3 2 5 r 3 2 5 Power and Transmission Cable No mm No mm 4 0 75 4 0 75 4 0 75 4 0 75 Piping Liquid Side mm in 6 35 1 4 6 35 1 4 6 35 1 4 6 35 1 4 Connections mm in 12 7 1 2 12 7 1 2 12 7 1 2 12 7 1 2 Drain Hose mm in 21 5 16 0 85 0 63 21 5 16 0 85 0 63 21 5 16 0 85 0 63 21 5 16 0 85 0 63 Indoor W H D mm 600 600 1 46 600 600 146 600 600 146 600 600 146 Dimension 23 62 23 62 5 75 23 62 23 62 5 75 23 62 23 62 5 75 23 62 23 62 5 75 Outdoor W H D 30 31 21 26 9 65 30 31 21 26 9 65 30 31 21 26 9 65 30 31 21 26 9 65 Indoor 15 83 1 15 33 1 15 33 1 15 33 1 Net Weight Outdoor 32 a 2 70 J 32 70 5 32 70 5 Tool Code Chassis Indoor Outdoor SF UL SF UL Temperature Control Thermistor Thermistor Thermistor Thermistor Functions Plasma Filter Auto Clean CHAOS Wind Auto Wind Steps Fan Cool Heat 3 4 3 4 3 4 3 3 4 3 Airflow Direction Control left amp right Auto Auto Auto Auto Remocon Type Wireless LCD Wireless LCD Wireless LCD Wireless LCD Sy Temperature 18 30 18 18 130 18 30 0 5 0044 Auto Changeover Micom Lr Timer 24h 24h 24h On Off 24h On Off sleep Operation Soft Dry Operation O O Resa tying 5 Deice Control Detrost O Hot Start O Jet Cool O Network Funct Dr Contact _ 0005 f Network LL Y
14. 28 70 y Vinyl tape Narrow A Connecting cable X Optional part Service Manual 13 Installation Confirm The Rei 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 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 Capacity 120 76 0 R 410A 100 70 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 pressure 25 C kg f cnf Vapor density 25 C kg m R 410A 64 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 Room Air Conditioner Indoor unit 1 2 Do not have any heat or steam near the unit Select a place where there are no obstacles in front of the unit Make sure that condensation drainage can be conve niently routed away 4 Do not install near a
15. More than More than 1 8 30cm 11 8 30 More than 28 70cm More than 23 6 60 If the outdoor unit is installed on roof structures or walls this may result in excessive noise and vibration and may be also classed as non serviceable installation Service Manual 15 Installation Pipe Size Standard Max Additional Capacity Length Elevation Refrigerant Btu h suction Evap mitt gimlozitt 9k 12k Qi27mm t 2 Q6 35mm 1 4 7 5 25 7 5 25 20 0 22 Indoor unit Outdoor unit Outdoor unit Oil ae 6 Outdoor unit Indoor unit fadoartinn T If piping length is more than 16 4ft 5m CAUTION Capacity is based on standard length and maximum allowance length is on the basis of reliability Oil trap should be installed every 16 4 23feets 5 7 meters 16 Hoom Air Conditioner Installation Preparing Work Open panel front 1 Pull the upper part of the front panel 2 Lift up the panel 3 To detach the front panel remove the two screws at the lower part 4 Detach the front panel from the body 5 To detach the panel disconnect the connector at the upper part Panel Front Connector Cover pipe and cover side remove 1 Please remove the screw of the center tuning cover 2 Pull up the side cover of desired connecting direction then cover side is separated 3 Pick the pipe hole of the si
16. REMARKS LAN121HNP LA120HPI ASNH121F2G0 131410 Chassis Assembly 3141A20037C 3141A20037C 3141A20037C 3141A20037C 146811 1 Motor Assembly DC Stepping 4681A20055A 4681A20055A 4681A20055A 4681A20055A Discharge 147581 Louver Horizontal 4758A20098A 4758A20098A 4758A20098A 4758A20098A 346810 Motor Assembly DC 4681A20047B 4681A20047B 4681A20047B 4681A20047B 349600 Bracket Motor 4960A20016A 4960A20016A 4960A20016A 4960A20016A 359012 Fan Turbo 5900 20063 5900 20063 5900 20063 5900 20063 352380 Guide Air 5238 20046 5238 20046 5238 20046 5238 20046 135515 Cover Assembly 3551 20225 3551 20225 3551 20225 3551 20225 330870 Pan Assembly Drain 3087A30009B 3087A30009B 3087A30009B 3087A30009B 354210 Evaporator Assembly First 5421 20265 5421 20265 5421 20265 5421 20265 35211 Tube Assembly Tubing 159830 Filter Assembly Air Cleaner 249951 Case Assembly Control Indoor 4995A20653J 4995A20653J 268711 3 PCB Assembly Main 6871A20999A 6871A20999A 266090 HVPS DC DC 567480 1 Thermistor NTC 6323A20004T 6323A20004T 135500 2 Cover 135500 1 3550A20511A 3550A20511A 135316 Grille Assembly Front Indoor 135080 3508A20092F 3508A20092F 152302 Filter Air 268711 4 PCB Asse
17. crete or rigid mount 2 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 3 If the vibration of the unit is transmitted to the hose Tubing connection secure the unit with an anti vibration rubber Evaluation of the performance Operate the unit for 15 20 minutes then check the sys Intake temperature tem refrigerant charge Discharge air fe 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 tempera ture and the discharge is more than 46 4 F 8 C 4 For reference the gas side pressure of optimum con AE Discharge dition is as below Cooling tempe ae The air conditioner is now ready for use Refrigerant The pressure of the gas side service valve 410 95 F 35 C 8 5 9 5kg cm G 120 135 P S L G Service Manual 33 Test running If the actual pressure is 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 PUMP DOWN This is performed when the unit is relocated or the refrigerant circuit is serviced Pump Down means collecting all refrigerant into the outdoor unit without the loss of refrigerant CAUTI
18. 3 Open the valve Lo side on the charge set and valves are set to the back seat discharge the refrigerant until the gauge indi cates 0 kg cm G 2 Connect the charge set to the 3 way valve s f there is no air in the refrigerant cycle the port pressure when the air conditioner is not running Leave the valve on the charge set closed is higher than 1 kg cm G discharge the refrig Connect the charge hose to the service port erant until the gauge indicates 0 5 to 1 kg cm G if this is the case it will not be neces sary to apply a evacuatin Discharge the refrigerant gradually if it is dis charged too suddenly the refrigeration oil will also be discharged 58 Hoom Air Conditioner Troubleshooting Guide 2 Evacuation All amount of refrigerant leaked Liquid side 7 Outdoor unit TD Procedure 1 Connect the vacuum pump to the center hose 3 Close the valve Lo side on the charge set of charge set center hose turn off the vacuum pump and confirm that the gauge needle does not move approxima 2 Evacuation for approximately one hour tely 5 minutes after turning off the vacuum Confirm that the gauge needle has moved pump toward 76 cmHg vacuum of 4 mmHg or less 4 Disconnect the charge hose from the vacuum pump Vacuum pump oil If the vacuum pump oil becomes dirty or depleted replenish as needed Service Manual 59 Troubleshooting Guide 3 Gas Charging Aft
19. 550140 Damper Compressor 554160 Compressor Set Korea 567502 Overload Protect Gas Pipe Liquid Pipe 5220 20005 5403 20019 4961 100150 4681A20122B 5901 10033 4791 300020 4 00982 2520UGAC2AA 6750U L029A 5220 20005 5403 20019 4961A10015D 4681A20122B 5901 10033 4791 300020 4 00982 2520UGAC2AA 6750U L029A 5220 20005 5403 20019 4961 100150 4681A20122B 5901 10033 4791 300020 4 00982 2520UGAC2AA 6750U L029A 5220 20005 5403 20019 4961 100150 4681A20122B 5901 10033 4791 300020 4 00982 2520UGAC2AA 6750U L029A 4995A21006S 6871A20901C Outdoor PCB 6323A20002L nlet air Cond out 435511 Cover Assembly Control Outdoor 3551AR7184R 3551AR7184R 3551AR7184R 3551AR7184R REAR PANEL NOTE Please ensure GCSC since the replacement parts may be changed demending upon the buyer s request Please check the correct parts in View RPL Replacement Part List on GCSC GCSC Website http biz Lgservice com Service Manual 75 December 2006 P No 3828A20926C Printed in Korea
20. Clogging Current is low NOTICE 1 The suction pressure is usually 4 5 6 0 kg cm G Cooling at normal condition 2 temperature can be measured by attaching the thermometer to the low pressure tubing and wrap it with putty 62 Room Air Conditioner Troubleshooting Guide Product does not operate at all Refer to Electronic Control Device drawing and Schematic diagram Turn off Main Power dJ L After 20 seconds Turn on Main Power Does beeping sound is made from the Indoor Unit e Main power s voltage e Voltage applied to the unit e Connecting method of Indoor Outdoor connecting cable e Check PWB Ass y Outdoor unit Check each load Indoor Outdoor Fan Motor Fuse Compressor Stepping Motor and contacting Pattern damage condition of related connector including connecting Varistor ZNRO1J cable of Indoor Outdoor Unit Check the voltage of power About AC 115V 60Hz Primarily the operating condition of Micom is OK 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 PCB Board Operation Check Items Content Remedy Power Transformer Outdoor unit Input Voltage About 115 10 Check the power voltage e Replace SMPS Output Voltage About DC15V 3 Module db 1C01D 7812 Output e 12 e Replace ICO1
21. The phenomena in case of connecting error INDOOR UNIT Open and connecting error The same as the phenomenon of Outdoor Unit CN DC DC D Blue 2 Black 3 Brown 4 Red The indoor fan does not operate The operation indicator of Indoor unit blinks 8 times up down vane does not operate CN UP DOWN Short between terminals e up down vane does not smoothly operate CN DISP It does not operate with a remote controller he operation indicator blinks once CN MOTOR Open On for 0 5 second Off for 3 seconds e 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 Service Manual 69 Troubleshooting Guide OUTDOOR UNIT All functions stop The operation with the remote controller forced and OPEN test one do not operate CN POWER RY COMP terminal CN TRANS The connecting wire of CN DC DC and Indoor and Outdoor Unit D Blue 2 Black 3 Brown 4 Red Connecting reversely OPEN Connecting reversely OPEN Connecting error
22. 6 1 8 015 88 1 61 8 19 05 1 92 1 Service Manual 19 Flaring work and connection of piping Check 1 Compare the flared work with the figure by Smooth all round 2 If a flared section is defective cut it off and do flaring NA E work again Improper flaring NG Inclined Surface Cracked Uneven damaged thickness Even length all round Indoor Preparing the indoor unit s piping and drain hose for installation through the wall 1 Route the indoor tubing and the drain hose in the direction of rear left or right 2 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 Connecting Gas side pipi cable eo 29 Liquid side piping Drain hose L CAUTION If the drain hose is routed inside the room insulate the hose with an insulation material so that dripping from sweating condensation will not dam age furniture or floors Foamed polyethylene or equivalent is recommended 20 Hoom Air Conditioner Connecting the piping with the indoor unit and drain hose with drain pipe 1 Align the ce
23. Connecting error 9 Connecting error Connecting error 0 lt 9 Connecting error Connecting error 9 70 Room Air Conditioner PWB pattern is damaged when applying the power All functions stop or the compressor does not operate he operation with the remote controller forced and test one do not operate All functions stop he operation with the remote controller forced and test one do not operate All functions stop The operation with the remote controller forced and test one do not operate The Indoor Fan does not operate All functions stop he operation with the remote controller forced and test one do not operate The only signal of remote controller operation stop is inputted but the product does not operate The RED indicator of outdoor unit blinks 5 times after 2 minutes with applying the power he beep sound such as beep beep beep beep occurs periodically in Indoor unit he signal input of a remote controller and operation of product is impossible he RED indicator blinks 5 times after 2 minutes with applying the power 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 No power for Indoor unit he signal input of the rem
24. Manual 49 Schematic Diagram OUTDOOR UNIT P No 6871A20901C PCB ASSEMBLY MAIN Top View PCB 68 0A90 06A ASM 6871A20901A nay 6 6 N POWER CO3J FUSE 125V 3 15A d be o ZNRO3J ZNRO2J o CN HEATER 9 NFOIM 4 RY HEAT Q O R10M O O E d 2 euren OO OD 2 jo Dd s Bra OO Rom 1 RO4M OBO e 8888 CN TH2 1 12M Ow OO0 jar cae OBO com 9 CO6H T O pio ES 2001 E qp E 8 88 26 3 9 58 0 5 i L num OBO O O Q e x pou 0 6 092 8 02 5 009 OOo OM 5 8 rose TEST KEY TACT cO Ber Q4 HO H HO i R13F li ib 3 T a 2 9 m rc Q 9H
25. away 5 RF 7X 5 amp gt lt ala oll lela 019 gt 49 2 gt 0 tuF RO1B ossos CO4A 8 0MHz 00 0 000047uF I 35V Gr P7 5 ADC5 RO1A RA RAK RR 100 P7 6 ADC6 OPTION 1 19315 5 ON LR2 WH CN LR2 WH wR TX 0 01uF 1 03 KID65004 WR_RX WIRERX gt 15 YA td3lS YA vd3lS 0 01uF E R22H 12 1K 1 R21H 12 1K 1 ORiH gt SAGES P4 0 INTO P4 1 INT1 P4 2 INT2 P4 3 INT3 P4 4 INT4 4 5 5 P4 6 INT6 P4 7 INT7 P3 0 T1CKO LEV4 P3 1 T1CK1 BLDC ON OFF 25 P3 2 704CAPO BLDC1H S P3 3 TACAP1 BLDC2 H S P3 4 T10UTO BLDC1 PWM P3 5 TIOUT1 BLDC2 PWM REMOCON AC PHASE EEPROM St EEPROM SA EEPROMWP LEV1 LEV2 LEV3 EEPROM aje e scocz HIS 0 1uF R02E 20 R03A 4 7K lt 5 RO1E 201 1K PKM12EPY 4002 ev co COTA ROAA 0 01uF 100 1 C02A 10uF 50V L1 16020 12 ZBF503D ZBF503D La GT 250 3P TS DC12V RED KRC102S 0 001uF 3 Signal YL EE 22 ae EIEI xl x KRA102S C15k 0 00 1uF 0 0010 Lad R14K Pus 012 aK 1N4
26. doorway 5 Ensure that the interval between a wall and the left or right of the unit is more than 19 6 50cm The unit should be installed as high as possible on the wall allowing a minimum of 7 9 20cm from ceiling Use a stud finder to locate studs to prevent unneces sary damage to the wall more than 4 9 feets 1 5 meters Outdoor unit If an awning is built over the unit to prevent direct sunlight or rain exposure make sure that heat radia tion from the condenser is not restricted Ensure that the space around the back and sides is more than 11 8 30cm The front of the unit should have more than 28 70cm of space Do not place animals and plants in the path of the warm air Take the weight of the air conditioner into account and select a place where noise and vibration are min imum Select a place where the warm air and noise from the air conditioner do not disturb neighbors Rooftop Installations 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 Installation More than 7 9 20cm More than 19 6 50cm i More than 19 6 50cm More than t 4 9ft 1 5m CAUTION Install the indoor unit on the wall where the height from the floor is More than 23 6 60cm
27. e eee 72 Heplacement Parts aoo bna SEED Eicher seda da EO 74 2 Hoom Air Conditioner Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage the following instructions must be followed Incorrect operation due to ignoring instruction will cause harm or damage The seriousness 15 classified by the following indications This symbol indicates the possibility of death or serious injury AXCAUTION 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 A 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 not modify or extend the Do not install remove or re control box securely power cord install the unit by yourself cus There is risk of fire or electric lomen shock There is risk of fire or electric There is risk of fire electri
28. 148 eu S DAN212K KRA102S 02K 0 0010 1025 2 2K lt Roa 974 Joar CN OPTION SMW200 07 CN LINK SMW200 06 Se ee ER RUW 1K gt SU Service Manual 47 Schematic Diagram n L Heat Pump Ser
29. 23 Connecting the cable between indoor unit and outdoor unit Connecting the cable between indoor unit and outdoor unit Remove the cover control from the unit by loosening the screw 2 Dismount caps on the conduit panel 3 Temporarily mount the conduit tubes on the conduit panel 4 Properly connect both the power supply and low volt age lines to the corresponding terminals on the termi nal block 5 Ground the unit in accordance with local codes 6 Be sure to size each wire allowing several inches longer than the required length for wiring 7 Use lock nuts to secure the conduit tubes 1 is neutral for 115V models NOTICE NOTICE Connector trade size for this unit is 1 2 12 7mm 1 gt shows field wiring Refer to How to connect wiring to the terminals for instructions on connecting depending on the wire type you are using 3 Use heat proof electrical wiring capable of with standing temperatures to 167 F 75 C 2 Separately wire the high and low voltage line 4 Use outdoor and waterproof connection cable A WARNING rated more than 300V for the connection between indoor and outdoor unit e Be sure to comply with local codes while For example Type SJO WA running the wire from the indoor unit to the outdoor unit size of wire and wiring method etc Every wire must be connected firmly Outdoor unit e No wire should be allowed to touch Terminal block refrigerant t
30. D Indoor Outdoor unit db e C02D 7805 Output Indoor unit DC 5V Replace ICO3D 7805 Output Outdoor unit ICO2D Indoor unit ICO3D Outdoor unit e CO1A KIA7036 Reset Voltage of Outdoor unit Micom No 18 5 01 4 2 Voltage of Indoor unit Micom No 43 and Indoor Outdoor unit soldering condition Replace faulty parts Service Manual 63 Troubleshooting Guide The product is not operate with the remote controller While the compressor has been stopped the compressor does not operate owing to the delaying function for 3 minutes after stopped 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 to the low speed by force uM Cause by the remote controller Caused by other parts except the remote controller m mark 4 displayed in LCD screen replace Check the contact of CN DISP connector When the detect switch double key inside the remote controller door is fault it is impossible to operate Check DISP PWB Ass y Voltage between CN DISP 0 40 DC 5V temperature regulating A w and wind speed selecting Check the connecting circuit between the remote controller Check point MICOM amp R17 2Q IR LED Q1 R16 2 2KQ Check the connecting circuit between PIN R11L 1K C11L 680PF MICO
31. M PIN Check Receiver Ass y 64 Hoom Air Conditioner Troubleshooting Guide Compressor Outdoor Fan are unable to drive Turn on Main Power 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 When in Fan Mode Compressor Outdoor Fan is stopped Check the sensor for indoor temperature is attached as close as to be effected by the temperature of Heat Exchanger EVA When the sensor circuit for indoor temperature and connector bad connection or are not engaged Compressor Outdoor Fan is stopped e Check the related circuit of R02H 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 When the temperature around Outdoor PWB Ass y is above 163 F the compressor is stop and only Outdoor Fan is operating 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 5 6 and GND DC5V DCOV Between 01 ICO2M No 9 Below DC 1V DC12V and ICO1M ICO2M No 8 app FORSE Turn off Main Power AM Check the electrical wiring diagram of outdoor side Check the abnormal condition for the co
32. ON Be sure to perform Pump Down procedure in the cooling mode Pump Down Procedure 1 Connect a low pressure gauge manifold hose to the charge port on the gas side service valve 2 Open the gas side service valve halfway and purge the air in the manifold hose using the refrigerant 3 Close the liquid side service valve all the way 4 Turn on the unit s operating switch and start the cooling operation 5 When the low pressure gauge reading becomes 1 to 0 5kg cm G 14 2 to 7 1 P S I G fully close the gas side valve and then quickly turn off the unit Now Pump Down procedure is completed and all refrigerant is collected into the outdoor unit 34 Hoom Air Conditioner How to replace picture amp photograph How replace picture amp photograph 1 Turn off power and then open 2 Pull out the both links of lower Push and close the top part of the upper part of front panel part of front panel as the front panel and then pull described in the below picture the bottom part of the panel forward until it is secured 5 Turn upside down of the 6 Place the picture photograph picture and turn over mat then between the exited picture and take off a protective tape mat Recommended size of a attached at the mat photo picture 450mm x 450mm Protective tape T Cover mat and press down 8 Slide the photo graph drawing 9 Push both links of lower part of with hand s until contacting requested under b
33. P Suction Pressure kg cm g Tout Outdoor Temperature C Tin Indoor Temperature C Service Manual 61 Troubleshooting Guide Cycle Parts Trouble analysis 1 Check temperature difference between intake and discharge air and operating current Temp difference approx 0 F 0 C Current All amount of refrigerant leaked out Check refrigeration cycle rated current Temp Difference Temp difference approx 14 F 8 C Refrigerant leakege Current less than 80 of Clog of refrigeration cycle rated current Defective compressor Operating Current Temp difference less than 14 F 8 C Current over the reated Excessive amount of refrigerant current Temp difference over 14 F 8 C Normal 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 Temperature Compared with Compared with Cause of Trouble Description the normal value the normal valve Hi Defective compressor Current is low igh Defective 4 way reverse valve Excessive amount of High pressure does not quickly Normal refrigerant rise at the beginning of operation Insufficient amount of Current is low refrigerant Leakage
34. Temp 1 F Compressor OFF Temp 2 Setting Temp 1 F 10 min dehumidification operation the indoor fan operates with the low airflow speed Service Manual 39 Operation 6 Heating Operation Mode only Heating Model The unit will operate according to the setting conditions by the remote controller The operation diagram is shown below INTAKE AIR TEMP SETTING TEMP 6 F D SETTING TEMP D A N Compressor ON Low OFF Selecting Selecting COMPRESSOR ON OFF ON OFF A point While the indoor pipe temperature is higher than 95 F indoor fan operates at low speed When the indoor pipe temperature becomes lower than 95 F indoor fan stops B point When the indoor pipe temperature is higher than 100 F 38 C fan operates at selected fan speed Hot Start Control The indoor fan stops until the indoor pipe temperature will be reached at 82 F During heating operation if indoor pipe temperature falls below 78 F fan stops The operation diagram is shown below INDOOR PIPE TEMP 82 F 78 F Selecting fan speed 40 Room Air Conditioner Operation 7 Cooling or Heating Mode with Sleep Mode Auto Control When selecting the Cooling or the Heating Xx combined with the Sleep Mode Auto Control 5 the operation diagram is as following Cooling Mode with the Sleep Mode he setting temperature will be automatically raised by 2 F 30 minutes later and by 4 1 hour later he ope
35. UD STEPA jH sTEP4 U D STEP3 pe U D STEP3 2 2 U D STEP2 mA U D STEP2 P0 1 PG1 6 5 80 U D STEP1 PO O PGO y R12C 10K _ 14 4 7K OUTDOOR RXD R15C 1K IC9 2 103 R16C 10K KA393 lt 19 20 POLY SW RXE250 POLY SW RXE250 CN UD BL CN UD BL C01B 04B 0 01uF PIN1 N MOTOR1 1 9 1 KA393 1K buo ROIS mE 2012 1K 103 I lt 2 5 H S C018 2 C05B 08B 0 01 ROOM TH IN PIPETH 2 6 s DRY ERROR DRY STATUS sje 5 8 8 5 5 BE fae gezeessses9 555 088752289 lt lt lt lt lt lt zoo z oooobonaorr ozzzog eran x Beg 99909 5 BE Nw 5 5 lt m d c 0 iG d t SN gt Eo 5 2 33 EIS 85500 ESBEN oqcono S c wm wo uas io ae rerata VENTILATION OUTDOORTXD GR 5V 2 ouTFan COMP OUTDOOR RXD BUZZER ON OFF BUZZER PWM RESE 485 SELLECT WIRE TX BLDC ON OFF 6 RF GND osc our OSC IN 4
36. an stops until the louver be set at the desired position or swing up indoor pipe temperature will be and down automatically reached at 82 F 28 C Auto Air Control by the unit electronic control 36 Hoom Air Conditioner Operation The function of 1 Time delay Safety Control e min The compressor operation is delayed for minutes to balance the pressure of cycle Protection of compressor 5sec The indoor fan is delayed for 5 seconds when operating initially to prevent noises occurred by the vertical louver and wind 2min The reversing valve is delayed for 2 minutes to prevent the refrigerant gas for abnormal noise when the heating operation is OFF or switched to the other operation mode while compressor is off While compressor is running it takes 3 5 seconds to switch 2 Chaos Swing Mode By the Chaos Swing key input the vane automatically operates with the Chaos Swing or they are fixed to the desired direction While in Chaos Swing mode the angles of cooling and heating cycle operations are different Cooling Mode gt Heating Mode CLOSED 3 Cooling Operation Mode e When selecting the Cooling 3 amp Mode Operation the unit will operate according to the setting by the remote control and the operation diagram is shown below INTAKE AIR TEMP SETTING TEMP 1 Compressor ON SETTING TEMP 1 F Compressor OFF More than 3 minutes Set
37. ater or other appliance cord from the outlet Do not appliances near the power cable touch it with wet hands here is risk of fire or electrical There is risk of fire or electrical There is risk of fire and electric shock shock shock Do not allow water to run into Do not store or use flammable Do not use the product in a tight electric parts gas or combustibles near the air ly closed space for a long time conditioner e t may cause There is risk of fire here is risk of fire or failure of Oxygen deficiency could occur failure of the product or electric product shock When flammable gas leaks turn Unplug the unit if strange Stop operation and close the off the gas and open a window sounds odors or smoke comes window in storm or hurricane If for ventilation before turn the from it possible remove the air condi product on DO NOT use the tele tioner from the window before phone or turn switches on or off the hurricane arrives There is risk of explosion or fire e There is risk of electrical shock or There is risk of property damage fire failure of product or electric shock Service Manual 5 Safety Precautions Do not open the inlet grill of the product during operation Do not touch the electrostatic filter if the unit is so equipped When the product is soaked flooded or submerged contact an Authorized Service Center There is risk of physical injury electric s
38. c Diagram schematic Diagram 12 SM SM SIM SM LED ewors onors EED SMW200 1P SMW200 P DPV OUT DPGND DP5V HVB HVB SW SW HVB ASSY 2 Ds CRECEIVER coa 220uF 10V CHVBPIN2 PIN2 Ca 15 FORCE SW C13H R12H 10K I 0010 lA SE HLOW 9 RO4H 10K I IH CO1H 03H 0 01uF SMW200 P EH EPR SMW200 P H H ANLO O HPOD H 3ni0 0 H909 i 5 3 5 o 2 3013508 OUTDOORTXD OUTDOOR DRY STATE DRY ERROR DRY IN L s L Lo CN DC DC Wh YW396 05 ee Co1Y 0 01uF E m o a 2 DISPLAY 1 1 Icoam KID65004 2 2 INROOMTH ROOMTH gt PIPETH 1 R13C 10K SSH SH SHS A QI SH SSS all ail DISPALY1 65 DATA1 1 7 56 LGMV OUT 1 6 pa 67 LGMV IN PLS FORCE SW TACT SW P1 4 FRONT STEPS fes 69 FRONT P1 3 FRONT STEP3 70 FRONT STEPS P1 2 FRONT STEP2 71 FRONT STEP2 FRONT STEP1 72 FRONT STEP1 1 0 UR STEPS 73 UR STEP4 PO 7 PG7 UR STEPS mn UR STEP3 P0 6 PG6 UR 5 2 pets UR sTEP2 P0 5 PG5 CUR STEP1__ f76 L R 1 P0 4 PG4
39. c shock shock explosion or injury Service Manual 3 Safety Precautions Be cautious when unpacking and installing the product Sharp edges could cause injury especially careful of the case edges and the fins on the con denser and evaporator Be sure the installation area does not deteriorate with age f the base collapses the air condi tioner could fall with it causing property damage product failure and personal injury Operation Take care to ensure that power cords could not be pulled out or damaged during operation There is risk of fire or electrical shock 4 Hoom Air Conditioner here is risk of fire electric shock 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 explosion or injury damage to the product Do not let the air conditioner run for a long time when the humidity is very high and a door or a win dow is left open Moisture may condense and wet or damage furnishings Do not turn the air conditioner ON or OFF by plugging or unplugging the power plug Do not place anything on the power cord e There is risk of fire or electrical e There is risk of fire or electric shock shock Safety Precautions Use a dedicated outlet for this Grasp the plug to remove the Do not place a he
40. cifically 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 voltage 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 Hoom Air Conditioner Checking the drainage and forming the pipings Checking the drainage and forming the pipings Checking t To check the drainage 1 Pour a glass of water on the evaporator 2 E
41. de cover CAUTION After removing the pipe hole cut the burr for safety When making pipe path through rear wall you don t need to pick the pipe hole Drain hose junction 1 Remove the rubber stopple in the desired drain direc tion 2 Insert drain hose into the handle of drain pan and join drain hose and connecting hose according to the figure by Connecting part in rubber cap Service Manual 17 Installation Fixing Indoor di i 1 Attach an Installation guide map on the 2 Look at suited horizon by horizontal desired surface meter on the horizontal setting line and INSTALLATION GUIDE MAP fix lightly the map by adhesive tape Horizontality Make a hole with a diameter of mm and 4 Drill the pierted part as a diameter of 50mm depth of 30 35mm by piercing a screw for connecting piping In case of piercing point rear surface 6 First Drive the two points of the upper parts by screws Leave 10mm for hanging the product 5 Drive the fore plastic anchors into drilled points Plastic anchors 7 Hang the hole of product at the upper 8 Drive the lower parts after facing the hole screws and remove the map Falling of product with plastic anchors and fix attention completely the upper screws Plastic anchors Hanger hole Rear side of Te product 9 Check the fixed product with light power
42. dium high and CHAOS JET COOL HEATING OPTIONAL Used to start or stop the speed cooling heaing 2s speed cooling heating operates super high fan speed in cooling heatig mode CHAOS SWING BUTTON Used to stop or start louver movement and set the C 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 SLEEP MODE AUTO BUTTON 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 vertical 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 C F SWITCH BUTTON Used to switch temperature reading from Centigrade to Fahrenheit Disassembly Disassembly WARNING Disconnect the unit from power supply before making any checks Be sure the power switch is set to OFF 1 To remove the Grille from the Chassis Pull the g
43. er Evacuation Gas side NE Check valve Lo UA Charging cylinder 1 OPEN Procedure 1 Connect the charge hose to the charging cylinder Connect the charge hose which you dis con nected from the vacuum pump to the valve at the bottom of the cylinder f you are using a gas cylinder also use a scale and reverse the cylinder so that the sys tem can be charged with liquid 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and press the check valve on the charge set to purge the air Be careful of the liquid refriger ant 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 refrigerant f the system can not be charged with the spec ified amount of refrigerant it can be charged with a little at a time approximately 150g each time while operating the air conditioner in the cooling cycle however one time is not suffi cient wait approximately 1 minute and then repeat the procedure pumping down pin 60 Hoom Air Conditioner Outdoor unit 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 ser
44. f wire cutting pli ers then strip the insulation to expose the solid wire about 25mm 15 16 2 Using a screwdriver remove the terminal screw s on the terminal plate 3 Using pliers bend the solid wire to from a loop suit able for the terminal screw 4 Shape the loop wire properly place it on the terminal plater and tighten securely with the terminal screw using a screwdriver For strand wiring 1 Cut the wire end with a wire cutter or wire cutting pli ers then strip the insulation to expose the strand wiring about 10mm 3 8 2 Using a screwdriver remove the terminal screw s on the terminal plate 3 Using a round terminal fastener or pliers securely clamp each stripped wire end with a round terminal 4 Position the round terminal wire and replace and tighten the terminal screw using a screwdriver Cap Reuse Hole for low voltage line T for sealing Power supply line 1e 115V 208 230V Low voltage line Conduit panel connecting cable Solid wire Loop Insulation Strip dud 15 16 Strand wire terminal Strip 10mm 3 8 Screw with Pd special washer E Round terminal Terminal plate ocrew with special washer Round terminal Service Manual 25 Connecting the cable between indoor unit and outdoor unit CAUTION After the confirmation of the above conditions prepare the wiring as follows 1 Never fail to have an individual power circuit spe
45. for about 2 3 sec and close it 4 Apply a soap water or a liquid neutral detergent on the indoor unit connection or outdoor unit connections by a soft brush to check for leakage of the connecting points of the piping 5 If bubbles come out the pipes have leakage Evacuation 1 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 tubing length and capacity of the pump The following table shows the time required for evacuation Required time for evacuation when 30 gal h vacuum 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 2 When the desired vacuum is reached close the Lo knob of the manifold valve and stop the vacuum pump Finishing the job 1 With a service valve wrench turn the valve stem of liquid side valve counter clockwise to fully open the valve 2 Turn the valve stem of gas side valve counter clockwise to fully open the valve 3 Loosen the charge hose connected to the gas side ser vice port slightly to release the pressure then remove the hose 4 Replace the flare nut and its bonnet on the gas side ser vice port and fasten the flare nut securely with an adjustable wrench This process is very important to pre vent leakage f
46. gauge and hose for R 410A Service Manual 31 Air purgingd 1 First Check the side cover assembly exactly and fix the power cord in the bottom groove of cover side left 2 Assemble connecting lead wire with controller fix the upper part of panel front and match the lower part of panel front Panel Front Connector 3 Screw up panel front and suspend the hook of panel front in the groove 32 Hoom Air Conditioner Test running TEST RUNNING 1 Check that all tubing and wiring are properly connected 2 Check that the gas and liquid side service valves are fully open Prepare remote controller 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 Use 2 AAA 1 5volt batteries Do not use rechargeable batteries Remove the batteries from the remote controller if the system is not used for a long time Settlement of outdoor unit 1 Anchor the outdoor unit with a bolt and nut 0 39 10mm tightly and horizontally on a con
47. he taped piping along the exterior wall Form a trap to prevent water entering the room 3 Fix the piping onto the wall by saddle or equivalent 28 Hoom Air Conditioner Seal small openings around pipings with a gum type sealer Drain hose Trap is required to prevent water from entering electrical parts Seal a small opening around the pipings with gum type sealer Air purgingd AIR PURGING Air purging The air and moisture remaining in the refrigerant system have undesirable effects as indicated below 1 Pressure in the system rises 2 Operating current rises 3 Cooling or heating efficiency drops 4 Moisture in the refrigerant circuit may freeze and block capillary tubing 5 Water may lead to corrosion of parts in the refrigeration system Therefore after evacuating the system take a leak test for the piping and tubing between the indoor and outdoor unit Air purging with vacuum pump 1 Preparation Check that each tube 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 2 Leak test Connect the manifold valve with pressure gauges and dry nitrogen gas cylinder to this service port with charge h
48. hock or product failure There is risk of fire or eletric shock Unplug the appliance before per forming cleaning or mainte nance 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 electrical shock here is risk of product damage or failure or unintended operation Ventilate the product from time to time when operating it togeth er with a stove etc here is risk of fire or electrical shock Take care to ensure that nobody could step on or fall onto the outdoor unit This could result in personal injury and product damage CAUTION B installation Always check for gas refriger ant leakage after installation or repair of product Install the drain hose to ensure that water is drained away prop erly Low refrigerant levels may cause failure of product 6 Hoom Air Conditioner A bad connection may cause water leakage Keep level even when installing the product To avoid vibration or water leakage 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 transport the air conditioner it will be exposed to sea wind door unit could damage the salt spray directly neighborhoods t may cause a problem for your Avoid personal injury e It may cause corrosion o
49. ing Down AN Gas side 27 Lo 8 Purge the air Procedure 1 Confirm that both liquid side and gas side valves are set to the open position Remove the valve stem caps and confirm that the valve stems are in the raised position 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 Gas side valve Connect the charge hose 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 liquid side valve to the closed position 56 Hoom Air Conditioner Outdoor unit 6 Operate the air conditioner in cooling mode and stop it when the gauge indicates 1kg cm g 7 Immediately set the Gas side valve to the closed position Do this quickly so that the gauge ends up indi cating 3 to 5kg cm g 8 Disconnect the charge set and mount the Liquid side and Gas side 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 1 Re air purging Re installation WW Liquid side Gas side Gas oylinder nr E Refrigerant OPEN V CLOSE E Procedure 1 Confirm that both the liquid side val
50. mbly Sub 267110 Remote Controller Assembly 352150 Hose Assembly Drain 5251AR1222R 5251AR1222R 5211 21789 5983 25015 6609A10008B 3550 20510 3531 20319 5230 20069 6711A20128F 5211 21789 5983 25015 6609 10008 3550 20510 3531 20319 5230 20069 6711A20128F 5211A21789C 9201AR1222R 5211A21789C 4995000880 6609A10008B 6609100088 3550A20510A 3550A20510A 82304000898 _ 6711A20088R 6711A20083R 9291AR1222R NOTE Please ensure GCSC since the replacement parts may be changed demending upon the buyer s request Please check the correct parts in View RPL Replacement Part List on GCSC GCSC Website http biz Lgservice com 74 Hoom Air Conditioner Parts List Outdoor DESCRIPTION PART No Replacement Parts List LAUO91CNP LAOS0CPO ASUC091FUGO LAUO91HNP LAO90HPO ASUH091FUGO0 LAU121CNP LA120CPO ASUC121FUG0 LAU121HNP LA120HPO ASUH121FUG0 REMARKS 430410 Base Assembly Outdoor 3041A20008K 3041A20008K 3041A20008K 3041A20008K 5220 20006 5220 20006 5220 20006 5220 20006 552203 1 Valve Service 552203 2 Valve Service 554031 Condenser Assembly Bending 549610 Bracket Assembly Motor Outdoor 346811 AC Motor Assembly 559010 Fan Assembly Propeller 447910 Barrier Assembly Outdoor
51. mponent of Compressor Outdoor Fan Motor Service Manual 65 Troubleshooting Guide When indoor Fan does not operate Does the voltage of each terminals of CN MOTOR CONNECTOR in Indoor unit corresponds to values in the Table of page 72 Does the voltage of terminal of CN DC DC CONNECTOR in Check connecting condition of the CN MOTOR CON Indoor unit corresponds to the values in the table of page 72 NECTOR 5 1 Check the pattern and the Check the interference of Indoor Fan Outdoor unit corresponds to the 7 of Indoor unit PWB values the table of page 72 98 Check the motor of Indoor Fan Check the connecting condi tion and disconnection of connecting wires between Indoor and Outdoor unit Check the patterns and the conditions of outdoor unit PWB Assy s 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 66 Hoom Air Conditioner 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 operating circuit of the Vertical Louver Confirm that there is DC 12V between pin RED of CN UP DOWN and GND Confirm that there is a soldering sh
52. n Lamps On Off Self diagnosis Function Error LED Indoor body operation LED Lights up during the system operation Error contents SVC check point once aH Indoor room temperature thermistor open short Indoor pipe temperature thermistor open short Outdoor pipe temperature thermistor open short Poor communication Indoor TH assy check Outdoor TH assy check e Communication line circuit check Service Manual 43 Operation The controls will look like the following Controls oignal transmitter 4 jJ O2 s 2 n 5 1 6 3 4 9 10 7 9 12 H 17 18 13 14 15 16 Flip up door opened 3 Operation Mode Cooling Operation Auto Operation or Auto Changeover Healthy Dehumidification Operation v Heating Operation e Cooling Model 4 2 Heat Pump Model 44 Hoom Air Conditioner N gt 10 11 12 13 14 15 16 17 18 START STOP BUTTON Operation starts when this button is pressed and stops when S the button is pressed again OPERATION MODE SELECTION BUTTON AO Used to select the operation mode C ROOM TEMPERATURE SETTING BUTTONS Used to select the room temperature INDOOR FAN SPEED SELECTOR Used to select fan speed in four steps low me
53. n the prod neighbors uct Corrosion particularly on the condenser and evaporator fins could cause product malfunction or inefficient operation Operation Do not direct airflow at room Do not use the product for spe Do not block the inlet or outlet of occupants Don t sit in the cial purposes such as preserv air flow draft ing foods works of art etc It is a consumer air conditioner not a precision refrigeration system his could damage your health There is risk of damage orloss of It may cause product failure property Use a soft cloth to clean Do not Do not touch the metal parts of Do not step on or put anyting on use harsh detergents solvents the product when removing the the product outdoor units etc air filter They are very sharp There is risk of fire electric shock There is risk of personal injury There is risk of personal injury and or damage to the plastic parts of failure of product the product Service Manual 7 Safety Precautions Always insert the filter securely Do not insert hands or other Do not drink the water drained Clean the filter every two weeks objects through the air inlet or from the unit or more often if necessary outlet while the air conditioner is plugged in A dirty filter reduces the efficiency There are sharp and moving parts It is not sanitary and could cause of the air conditioner and could that could cause personal injury se
54. nsure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit Ws Mossy gt gt E AAY H QUU tif m W Drain piping 1 The drain hose should point downward for easy drain flow Downward slope 2 Do not make drain piping like the following Do not raise Accumulated drain water Tip of drain hose Less than dipped in water 90mm gap Water leakage leakage Service Manual 27 Checking the drainage and forming the pipings 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 f you want to connect an additional drain hose the end of the drain outlet should be routed above the ground Secure the drain hose appropriately In cases where the outdoor unit is installed below the indoor unit perform the following 1 Tape the piping drain hose and connecting cable from down to up 2 Secure the tapped piping along the exterior wall using saddle or equivalent In cases where the outdoor unit is installed above the Indoor unit perform the following 1 Tape the piping and connecting cable from down to 2 Secure t
55. nter of the pipings and sufficiently tighten the flare nut by hand 2 Tighten the flare nut with a wrench Outside diameter m m inch kgf cm 26 35 1 4 180 250 29 52 3 8 340 420 012 7 1 2 550 660 3 When extending the drain hose the indoor unit install the drain pipe Wrap the insulation material around the connecting portion 1 Overlap the connection pipe insulation material and the indoor unit pipe insulation material Bind them together with vinyl tape so that there may be no gap 2 Wrap the area which accommodates the rear piping housing section with vinyl tape 3 Bundle the piping and drain hose together by wrap ping them with vinyl tape over the range within which they fit into the rear piping housing section Flaring work and connection of piping 43 4 Indoor unit tubing Flare nut Pipings Spanner fixed Flare nut Connection pipe Indoor unit drain hose Adhesive Vinyl tape narrow Plastic bands ulation material rt Connection 4 Indoor pipe unit pipe Vinyl tape Wrap with vinyl tape wide Connecting cable Vinyl tape narrow Wrap with vinyl tape Vinyl tape wide Drain hose Service Manual 21 Flaring work and connection of piping CAUTION Installation Information For right piping Follow the instruction below Good case Press on the upper side of clamp and unfold the tubing to downward slowly
56. o 238323832 207v vod 4404 7 s DEM eoaw2 As S od a ai ail al E 93 u9j i NAH vosznin 1 SOd 8 6 AS 20 salot ZOO 9x1Vet 1 04 Wad 90d t VOU lt CUA la 6 4 AAAS P Eld 10 4 lt 2d 8 LANSA gt vid 04 9 L T oF 1205 lt 212 ATO Tost peg t Wwe 2 2 le 262 6 ver 63 9 gt cu 99 WOO 94 Zld 61 ayaa PATI IWD3 N3 lt 10x1 S rated CT 1 Ld SAT 37100 6 y Do vi 264 e 1 Ies 029 Ld 21281 102 lt Ov 5o PEE GOV DAS 1531 1 Tiza n 91 Rv 264 S 20 iy 1 16a 94d 8 6 TON cy L 082 1 t 44 1021 3 8 1 1 W 21 ASI 94 AG AS2 719083608 Troy 4000 48 Room Air Conditioner Schematic Diagram INDOOR UNIT P W B P No 6871A20999A PCB ASSEMBLY MAIN Top View Hill T a 0 OT OD ou f ab lo 30 Ei Ae _ ASIC pg O _ 8888 MO DC DC 8888 PCB ASM 68716820999 CN MOTORI OTA orsel db mD Service
57. oner Operation Auto Operation for Dehumidification only Heating Model he Setting temperature will be same that of the auto operation for cooling Compressor ON temperature Setting temperature 2 Compressor OFF temperature Setting temperture 1 F Intake air temp below 68 F Over 68 F below 70 F Setting temp 68 F Intake air temperature 1 F Auto Operation for Heating only Heating Model Compressor ON temperature Setting temperature Compressor OFF temperature Setting temperature 6 F Vertical louver auto operation During Auto Operation pressing the chaos swing button makes the horizon tal louvers swing up and down automatically If you want to stop auto swing press chaos swing button again 5 Healthy Dehumidification e When the dehumidification operation input by the remote control is received the intake air temperature is detected and the setting temp is automatically set according to the intake air temperature 79 F lt Intake Air Temp 2 77 F 75 F lt Intake Intake Air lt 799 gt Intake Air Temp 2 F 64 F lt Intake Intake Air lt 75 F gt Intake Air Temp 1 F Intake Air Temp lt 64 F 2 64 F 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 dehumidification operation and 4 min compressor off repeat Compressor ON Temp 2 Setting
58. ort at following terminals Between 7 78 79 and 60 of MICOM Between 4 5 6 and 7 of ICO2M Between 0 47 and 43 ICO1M Between 1 3 and 5 of CN UP DOWN If there are no problems after above checks Confirm the assembly conditions that are catching and interfering parts in the rotation radial of the Vertical Louver Service Manual 67 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 Check the connecting wires between Indoor and Outdoor unit for the connecting error and the contacting condition Check the installation condition of outdoor unit Check for the communication error and the operating condition of product after also operating with the remote controller then taking above 2 minutes Apply the power again after about 20 seconds by the power of Outdoor unit is Check for the communication error and the operating condition of product after also operating with the remote controller then taking above 2 minutes Check the PWB assembly of Indoor and Outdoor unit re 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 connecting them 68 Room Air Conditioner Troubleshooting Guide
59. oses 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 cylinder valve when the gauge reading reached 150 P S I G Next test for leaks with liquid soap 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 1 Do a leak test of all joints of the tubing both indoor and outdoor and both gas and liquid side service valves Manifold valve Bubbles indicate a leak Be sure to wipe off the Pressure a soap with a clean cloth Indoor unit 2 After the system is found to be free of leaks relieve the nitrogen pressure by loosening the Charge hose charge hose connector at the nitrogen cylinder When the system pressure is reduced to normal Nitrogen gas disconnect the hose from the cylinder videri vertical standing position Service Manual 29 Air purgingd Soap water method 1 Remove the caps from the 2 way and 3 way valves 2 Remove the service port cap from the 3 way valve 3 To open the 2 way valve turn the valve stem counterclock wise approximately 90 wait
60. ote controller and opera tion of product is impossible The thermal protector of the Power Trans operates when let it alone for long time he signal of the remote controller is inputted The fuse and Q61 in the Outdoor unit are damaged when the indoor fan is operated No power for Indoor unit he signal input of the remote controller and opera tion of product is impossible RED indicator of the Outdoor unit blinks 5 times after 2 minutes with applying the power Troubleshooting Guide Voltage of Connectors according to Indoor Fan Speed Input Power INDOOR PWB ASSY RY COMP A RY COMP B CN MOTOR Connecting wires between Indoor and Outdoor CN DC DC Indoor Outdoor Connecting Terminal Connecting Terminal CN DC DC BL DC Voltage 10 11 97 1197 1197 1197 11 97 CN DC DC 15 87 15 87 1587 15 87 15 87 15 87 15 87 1587 1587 1587 Service Manual 71 Exploded View Exploded View Indoor Unit 352150
61. oth hanger panel inside and fix it Then closely parts as following and fix them turn on Press the front panel lightly to close In case a mat is not used recommended size of a photo picture 522mm x 522mm When powering on after replacing filter and picture the front panel doesn t intervene Service Manual 35 Operation Operation Functions Operation ON OFF by Remote controller Sensing the Room Temperature e Room temperature sensor THERMISTOR Room temperature control Maintains the room temperature in accordance with the Setting Temp Starting Current Control Indoor fan is delayed for 5 seconds at the starting Time Delay Safety Control Restarting is inhibited for approx 3 minutes Indoor Fan Speed Control e High Med Low and Auto Operation indication Lamps LED Lights up in operation Healthy Dehumidification Mode Intermittent operation of fan at low speed Sleep Mode Auto Control The fan is switched to low Cooling med Heating speed Defrost control Heating he unit will be stopped after 1 2 3 4 5 6 7 hours Both the indoor and outdoor fan stops during defrosting Hot start will be operated after The fan is switched to intermittent or irregular operation defrosting ends The fan speed is automatically switched from high to low speed Chaos Swing Hot start Control Heating he indoor f
62. ration will be stopped after 1 2 3 4 5 6 7 hours INTAKE AIR TEMP 30 minutes 30 minutes SETTING TEMP 1 N Compressor NER Pad as SETTING TEMP 1 F Compressor OFF More than lt Heating Mode with the Sleep Mode only Heating Model he operation will be stopped after 1 2 3 4 5 6 7 hours INTAKE AIR TEMP M SETTING TEMP 6 Compressor OFF SETTING TEMP Compressor ON More than More than INDOOR FAN SPEED Low or OFF Low or OFF Low or OFF COMPRESSOR ON ON OFF ON Service Manual 41 Operation 8 Forced Operation Operation procedures when the remote control can t be used The operation will be started if the power button is pressed If you want to stop operation re press the button ON OFF button Cooling Heat pump Model Model Room Temp gt 76 F 24 C 70 F 21 C lt Room Temp lt 76F 24 C Room Temp lt 70 F 21 C Operating mode Healthy Dehumidification Indoor FAN Speed Healthy Dehumidification Rule High Setting Temperature 72 F 22 C T2 F 22 C 74 F 23 C 76 F 24 C Test operation During the TEST OPERATION the unit operates in cooling mode at high speed fan regardless of room tempera ture and resets in 18 minutes During test operation if remote controller signal is received the unit operates as remote controller sets If you want to use this operation Press and hold the ON OFF button for 3 5 second
63. rille bottom the remove 2 securing screws Lift the both lower parts of panel front After pull down this panel a bit separate connecting wire with product Panel Front Connector 2 To remove the Control Box Before removing the control box be sure to disconnect the wires from PWB SS Step Motro Connector Pull the cover control out from the control box iN LT CORO and disconnect other wires Remove securing screws Pull the control box out from the chassis carefully zy o SU 4 ey A A Service Manual 45 Disassembly 3 To remove the Evaporator Remove hole tubing holde Remove 2 screws securing the evaporator Pull the evaporator out from the chassis carefully 4 Before removing Turbo Fan Remove the securing screws from the chassis Pull the pipe top cover and the air guide 5 To remove the Motor Remove the securing bolt from the motor shaft Pull the fan out from the motor shaft Turbo Fan Remove 4 screws securing motor mount from the chassis and lift up the motor mount and the bracket 46 Hoom Air Conditioner Schemati
64. rious health issues cause product malfunction or dam age gt Use a firm stool or ladder when cleaning or main Replace the all batteries in the remote control with taining the air conditioner new ones of the same type Do not mix old and new batteries or different types of batteries Be careful and avoid personal injury There is risk of fire or explosion 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 2 SS 8 Room Air Conditioner Dimensions Dimensions Symbols Used in this 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 This symbol indicates special notes Indoor Unit mm Hanger Hole Fix Hole Pipe Hole INDOOR UNIT 222000000000 9 23 6 mm nch p 23 6 Service Manual 9 Dimensions Gas side 8 way valve Liquid side 2 way valve 9k 12k Models 770 30 3 540 21 3 245 9 6 285 11 2 64 2 5 518 20 4 10 0 4 100 3 9 10 Hoom Air Conditioner Product Specifica
65. rom the system 5 Replace the valve caps at both gas and liquid side ser vice 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 2 way valve Open 3 way valve Close Liquid side Hexagonal wrench Indoor unit Outdoor unit Charging Air purgingd 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 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 200 0 2202 of R 410A per meter foot Pipe Size Standard p Capacity Btu h Suction Evap m Max Elevation B m ft Additional Refrigerant mozi 12k Q127mm t 2 6 35 14 7 5 25 Example A line set is used 5 additional ft X 0 22 ounce per foot add 1 1 ounces of R 410A Important 7 5 25 20 0 22 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
66. s then the buzzer sound 1 beep If you want to stop the operation re press the button 9 Auto restart In 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 So there is no need of activating this function by pressing any key or button In the initial mode the fan operates at a low speed and the compressor starts 2 5 3 minutes later As the compressor starts the fan speed also resumes its previous setting mode Helpful information Fan speed and cooling capacity The cooling capacity indicated in the specification is the value when the fan speed is set to high and the capacity will be lower at low or medium fan speed High fan speed is recommended when you wish to cool the room quickly NOTICE Auto restart function has set enable as factory default But customer can set up by following this instruction To be disable function Press and hold the ON OFF button for 6 seconds then the buzzer sound 2 beep and the indicator lamp 1 blinks 4 times To be enable function Press and hold the ON OFF button for 6 seconds then the buzzer sound 2 beep and the indicator lamp 1 brights 4 times 42 Hoom Air Conditioner Display Function Signal Receptor Operation Receives the signals from the remote control Signal receiving sound two short beeps or one long beep Operation Indicatio
67. ting Setting fan fan B Protection of the indoor heat exchanger from frosting Compressor and outdoor fan stop when indoor pipe temperature is below 32 F 0 C and restart at the pipe temperature is above 45 F 7 C Service Manual 37 Operation Auto Operation Electronic control mode The operation procedure is shown below Cooling amp Heating Model Press Start Stop Button Select Auto Operation Mode Check the Room temperature Operation mode Indoor fan speed jare decided automatically by the unit electronic control Setting temperature Intake air Over X below Operation Mode Heating Soft Dry f initial mode is decided that mode is continued without the room temperature changing Auto Operation for Cooling Operation Condition Intake air Temperature Setting Temperature Fan Speed Air Direction Control Over 78 F 77 F Over 76 F below 78 F Intake air 1 C In this mode 1 Operation Over 72 F below 76 F Intake air 0 5 C when pressing the vertical air Over 68 F below 72 F Intake air temperature Controlled by direction control button vertical below 64 control ene ouver swings up When pressing room Over 64 F below 86 F Electronic control and down button during Auto button during Auto below 64 F 64 F SETTING TEMP 1 F 45 SETTING TEMP 1 F INDOOR FAN SPEED The electronic control operation COMPRESSOR OFF ON 38 Hoom Air Conditi
68. tions Product Specifications AS CO91F2GO LAO91CNP AS C121F2G0 LA121CNP AS HO91F2GO LAO91HNP AS H121F2GO LA121HNP or AS CO91F2GO LAO90CP AS C121F2GO LA120CP AS HO91F2G0 LAO90HP AS H121F2GO LA120HP Cooling Capacity 2 87 3 97 2 87 3 37 Min Rating Max 9 800 11 500 9 800 11 500 Heating Capacity 2 87 3 97 9 800 11 500 Power Input Cooling Heating W 1 100 980 980 1 100 1 100 Running Current Cooling Heating A 10 9 4 9 4 10 10 Starting Current Cooling Heating A 57 0 57 0 57 0 57 0 57 0 57 0 WW 10 0 10 5 10 0 10 5 2 93 3 06 Power Suppl 1 115 60 1 115 60 1 115 60 1 115 60 Power Factor 95 7 90 7 95 7 Air Flow Bale Indoor Max m min cfm 9 3 330 9 3 330 9 3 330 9 3 330 Outdoor Max m min cfm 25 883 25885 25 883 25 883 Moisture Removal 1 4 1 4 Indoor H M L 41 35 29 rim 41 35 29 41 35 29 SoundLevel om 8 48 Refrigerant amp Charge at 7 5m R410A 900 31 8 900 31 8 R410A 900 31 8 R410A 900 31 8 Type Compressor Model 13 ca 13 GK113CAA GK113CAA Motor PSC PSC PSC PSC FVC68D PVE FVC68D PVE FVC68D PVE FVC68D PVE MRA12053 12027 MRA12053 12027 MRA12053 12027 MRA12053 12027 Turbo Fan Turbo Fan Turbo Fan Turbo Fan Fan Indoor 24 Propeller Fan outdoor Motor Type AC AC Induction AC Induction Motor Output 27 27
69. ubing the compressor or any moving parts Conduit panel ANI Power Supply ANS Connecting AWG MIN source Capacity cable Power supply d Cover control 24 Room Air Conditioner Connecting the cable between indoor unit and outdoor unit Dismount two caps on the conduit panel Make a hole appropriate for the passage of connec tion cable through on cap by tool for low voltage line 3 Pass the connecting cable through the hole Properly connect the cable on the terminal block 5 Fix the connection cable with clamp cord provided on the unit not to have strain at the terminal when the connection cable is pulled outside up to a 35 pound weight Wind the vinyl tape round the connecting cable for sealing between the surface of the connection cable and cap Mount the taped part of cable on the cap 8 Finally mount the holed cap with the wound cable on the conduit panel A WARNING Loose wiring may cause the terminal to over heat or result in unit malfunction A fire hazard may also exist Therefore be sure all wiring is tightly connected 1 2 O gt N When connecting each power wire to the corresponding terminal follow instructions How to connect wiring to the terminals and fasten the wire tightly with the fixing screw of the terminal plate How to connect wiring to the terminals For solid core wiring or F cable 1 Cut the wire end with a wire cutter o
70. ve and the gas side valve are set to the closed position 2 Connect the charge set and a gas cylinder to the service port of the Gas side valve Leave the valve on the gas cylinder closed 3 Air purging Open the valves on the gas cylinder and the charge set Purge the air by loosening the flare nut on the liquid side valve approximately 45 for 3 seconds then closing it for 1 minute repeat 3 times After purging the air use a torque wrench to tighten the flare nut on liquid side valve 4 Check for gas leakage Check the flare connections for gas leakage 5 Discharge the refrigerant Close the valve on the gas cylinder and dis charge the refrigerant until the gauge indicates to 5 kg cm g Troubleshooting Guide Outdoor unit 6 Disconnect the charge set and the gas cylin der and set the Liquid side and Gas side valves to the open position Be sure to use a hexagonal wrench to operate the valve stems 7 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 CAUTION Do not leak the gas in the air during Air Purging Service Manual 57 Troubleshooting Guide 2 Balance refrigerant of the 3 way valve NW Liquid side Outdoor unit Gas leakage OPEN mr CLOSE Procedure 1 Confirm that both the liquid side and gas side
71. vice port Stopping partway will allow the gas to be dis charged f the system has been charged with liquid refrigerant while operating the air conditioner 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 CAUTION This unit is charged with R 410A Pay attention not to charge R 22 Troubleshooting Guide Additional gas charging Gas leakage When refrigerant is insufficient by leakage recharge the unit with the refrigerant up to normal operating suc tion pressure Use the graph or the equation below to get operating suction pressure according to indoor and outdoor tem perature 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 Suction Pressure Kg cm g 5 10 15 20 25 30 35 40 Indoor Temp C P 3 0 0123 x Tout 0 8 x Where

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