LG Multi Type Air Conditioner
Contents
1. Hs 0 Emm Ie p MET GU d ans poem o xi Jeck GT 2 en um m m Sum eil es m asks 1 4 ne nen a ct Dee vao A Ez E 31111 217 jT B ee ze om Tu Iess LIT Zo ele po aevo 55 go eh uno ES E HR 43 pim cl SIS EC sje caco copar We lt IR 25 SIS SS a cn EIST x Tr nn SED nr pue E 481 H De E wel es Let 20 Ki I Tino EXC FE m p EEN dou rm acu ame em om Sn pei Pee TH HH M 67 nn mio 3 LE 0 EN Io DEL L xs SS E se ti m T s on wena w 5 EZL 9 8 V gt n E iini 2 oan 97 i 9 rr moms SE ag 97 n sisioyoedeo peugepun jo yun Z ze 6 uno srooumsrsospouyopun WUN AWIASIO T2. E S 64 HA RI EE bol REE amp d 59 Gas side 3 Way valve Liquid side 2 Way valve TI m MODEL si T2UC242FAA M242CX W mm 870 H mm 655 D mm 320 L1 mm 370 L2 mm 25 L3 mm 630 L4 mm 25 L5 mm 546 L6 mm 160 L7 mm 160 L8 mm 55 L9 mm 80 110 mm 50 Service Manual 11 Electronic Control Device H Electronic Control Device Indoor Unit MAIN P C B ASM VIEW FUSE 250VAC T2A CN L1 CN L ROBL gt o 8888 888 1992558 RY CUMP Ex CN U DCWH T CN DISP2CBL x zz 2 pa E4 CN P70 av 99 2 amp El re 8 a 5 m o pwere e uere elle S e 3 3 2 2 0 amp O GD O ci e e 9 49 9 ECN RF 55 PCB 6870A90238A Si a e 1 feo o o oo E O a 7 lassvise7il_eos7e IG 8 at 2w E m lt E a E amp Sr 51815 els Se B Qh coop TI Nile 3 82478 51 BI Kat 88888 GA e 5 2 Ve o ROAL CN
3. MJUS2367703 349600 BracketMotor 4960A20046A 546810 MotonAC 4681A20052Y 559010 FanAssemblyPropeller 1A00195D 447910 BarierAssembly Outdoor 4791A30004Q 649950 Assembly Control Outdoor ABQS1029004 237200 2 00928 648600 Clamp Capacitor____ 4H00442P W6920 Relay Contact____k 6920AP3400A W6640 ConnectonTerminal Block 4900103 W6640 ConnectorTerminal Block 3H00390A 669010 Assembly 6901 20011 669010 Fuse Assembly 6901A20011Q 349490 4948A20005C 43530 jGrlleDischarge 3530A20007M 435512 Cover 2400958 435511 Assembly Control Outdoor 3A01919A NOTE Please ensure GCSC since these parts may be changed depending upon the buyer s request GCSC WEBSITE http biz LGservice com 54 Multi Air Conditioner December 2007 P No MFL47139201 Printed in China
4. m EN 227 id 27 f DE mem J wee S Ord ND el lHVd IQ i OIN SIS Schematic Diagram Eons mee ZN 5 Y E a 5 x 5 z m u 18 Multi Air Conditioner Functions u Function of Indoor Unit Wall mounted type Operation ON OFF by Remote controller Sensing the Room Temperature 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 High Med Low Chaos Operation indication Lamps LED D Lights up in operation Ww Lights up in Sleep Mode 0 Lights up in Energy Saving Mode E Lights up in Defrost Mode
5. Protection of the evaporator pipe from frosting If the indoor pipe temp is below 0 C in 7 min after the compressor operates without any pause while in cool ing cycle operation mode the compressor and the outdoor fan are turned off in order to protect the indoor evaporator pipe from frosting When the indoor pipe temp is 7 C or higher after 3 min pause of the compressor the compressor and the outdoor fan is turned on according to the condition of the room temperature Buzzer Sounding Operation When the appliance operation key is input by the remote control the short beep beep sounds When the appliance pause key is input by the remote control the long beep sounds 24 Multi Air Conditioner Operation Details The controls will look like the following OPERATION DISPLAY Displays the operation conditions CHAOS SWING BUTTON OPERATION MODE SELECTION BUTTON Used to select the operation mode e OFF TIMER BUTTON START STOP BUTTON Operation starts when this button is pressed and stops when the button is pressed again ROOM TEMPERATURE SETTING BUTTONS INDOOR FAN SPEED SELECTION BUTTON JET COOL speed in cooling mode ENERGY SAVING Energy saving cooling mode can save 1 Operation Mode energy in cooling 2 Operation PROCEDURE Cooling Operation WE Healthy Dehumidifacation Operation 6 1st 2nd
6. ante neven Ro pipe even ug engen Burr removal Completely remove all burrs from the cut cross section of pipe tube e Put the end of the copper tube pipe in a downward direc tion as you remove burrs in order to avoid dropping burrs into the tubing O Pipe Reamer Point down QN 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 Flare nut Copper tube Flaring work Firmly hold copper pipe in a die in the dimension shown in the table above Clamp handle Red arrow mark 42 Multi Air Conditioner Carry out flaring work using flaring tool as shown below Outside diameter A mm inch mm 06 35 1 4 0 0 5 09 52 3 8 0 0 5 012 7 1 2 0 0 5 015 88 5 8 0 1 0 019 05 3 4 1 0 1 3 Compare the flared work with figure below e f flare is noted to be defective cut off the flared sec tion and re flare it Smooth all round Inside is shiny without scratches ee Improper flaring Inclined Surface Cracked Uneven damaged thickness Even length all round Preparing the indoor unit s piping and drain hose for instal lation through the wall Remove the plastic tubing retainer see illustration below and pull the tubing and drain hose away from chassis Replace the plastic tubing holder in the orig
7. website http www lgservice com e mail http www Igeservice com techsup html LG Multi Type Air Conditioner SERVICE MANUAL MODEL Indoor Unit Wall Mounted Type TMNCO92DYAA MO92CD TMNC122DYAA M122CD Outdoor Unit T2UC182FAA M182CX T2UC242FAA M242CX CAUTION BEFORE SERVICING THE UNIT READ THE SAFETY PRECAUTIONS IN THIS MANUAL ONLY FOR AUTHORIZED SERVICE PERSONNEL Multi Air Conditioner Service Manual TABLE OF CONTENTS cce E 3 Product Specifications c terere eer er nennen 7 AA tr cr rr H Refrigeration Cycle Diagram use ae 12 eben Hill 13 Electronic Control Device T 14 Schematic Diagra un ae Te 17 EUNCUONS EE 19 Operation Details scsi asa 22 RE le EE 26 2 EE 29 Cycle Troubleshooting Guide sss 33 39 Flaring work and connection of piping A ex RARE e REN BARRE RENE NER 42 Connecting the Cable Between Indoor Unit and Outdoor Unit 47 Exploded View and Replacement Parts List 49 2 Multi Air Conditioner Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage the following instructions must be followed Incorrect operation due to ignoring instruction will cause harm or damage The seriousness is classi
8. 3rd Ath Service Manual Cooling Model TEMP Start Stop Button Operation Mode Selection Button Room Temperature Setting Button Indoor Fan Speed Selection Button Used to stop or start louver movement and set the desired up down airflow direction Used to set the time of stopping operation Used to start or stop the speed cooling Speed cooling operates super high fan 25 H Disassembly Inder Unit A WARNING Disconnect the unit from power supply before mak ing any checks Be sure the power switch is setto OFF To remove the Grille from the Chassis Setthe up and down air discharge louver to open position horizontally by finger pressure Remove the securing screws Toremove 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 26 Multi Air Conditioner Conductor Disassembly Disassembly 2 To remove the Control Box Rien conte a gt iS gt 534 E 3 To remove the Discharge Grille Unhook the discharge grille and pull the discharge grille out from the chassis carefully 4 To remove the Evaporator Remove 3 screws securing the evaporator at the left 2EA in the Eva Holder at the right 1EA A CAUTION When repair do not damage the Caution label
9. Service Manual 27 Unhook the tab on the right inside of the chassis at the same time slightly pull the evaporator toward you until the tab is clear of the slot 5 To remove the Motor Cover Remove 2 securing screw Pull the motor cover out from the chassis carefully 6 To remove the Cross Flow Fan Loosen the screw securing the cross flow fan to the fan motor do not remove Lift up the right side of the cross flow fan and the fan motor separate the fan motor from the cross flow fan Remove the left end of the cross flow fan from the self aligning bearing 28 Multi Air Conditioner Disassembly 2 way 3 way Valve 2 way 3 way Valve 2 way Valve Liguid Side 3 way Valve Gas Side Hexagonal wrench 4mm Open position Closed position Flare nut To piping connection To outdoor unit ipin piping connection Open position Closed position Service Service port cap port To outdoor unit Works Shaft position Shaft position Service port Shipping Closed Closed Closed with valve cap with valve cap with cap Air purging Open Closed Open Installation counter clockwise clockwise push pin or with vacuum pump Operation Open Open Closed with valve cap with valve cap with cap Pumping down Closed Open Open Transfering clockwise counter clockwise connected manifold gauge Evacuation Open Ope
10. CENT S x RO2L C06 5 TROIF Does COLD S COPA a NIC y Tos 8 52 Lon du o 3 eest Si o e 9915 6233 98 050 e m ICOIF 8 88 o o Seil S amp 1600 E o leo as 3 7 ROGH C03H C04J S s SMPS S Ro2D Coon BOTTOM VIEW O Or Es 3e CH O e co i m B vunn ii ge L 2 mung BEE 14 Multi Air Conditioner Electronic Control Device 7 D03J 8 EBRo rr Ta PWB EAX32638001 5 ASM EBR326371 RO9J RIO wW o NTC SC i D02J O 9 Int 8 E ROW EBIHO T AM 09 RO2J BDO4D Je 5 9 6 Te x N BD02D S TEE KD 5 T A 2 2 BDO3D 8 9 N v N m BDO1D W s COON 9 N FOIN ICO2D i Ld _ o TEST sw FUSE CN CN CONP e LEDO3 RY 8P RY COMP1 A Gr LEDO2 LEDOI 5 4 Orn SIS Sw RY SWB RY SV A RY FAN RY COMP A RY COMP B RY COMP1 B CO6D u G gt v CN TEMP ICO3D J02 L 52 2 5 9 DA 29g S
11. for Heating model DOOR Lights up in Compressor operation for Cooling model Health Dehumidification Operation e Intermittent operation of fan at low speed Sleep Mode Auto Control e The fan is switched to low Cooling med Heating speed The unit will be stopped after 1 2 3 4 5 6 7 hours Natural Air Control by CHAOS Logic The fan is switched to intermittent or irregular operation The fan speed is automatically switched from high to low speed Airflow Direction Control The louver can be set at the desired position or swing up and down automatically Service Manual 19 Functions Remote Controller Operation ON OFF O Operation Mode Selection 0 Cooling Operation Mode a Healthy Dehumidification Operation Mode 0 Heating Operation Mode xx Fan Speed Selection AS S HH ERN IH muii N gt O TEMPERATURE LOW HIGH mc Down to 18 Up to 30 C Cooling JET COOL b e Sleep Operation Cancel Sleep Mode Timer ON or Timer OFF Airflow Direction Control 3 O 1 2 3 4 5 6 7 Off Timer Fan Operation Mode Fan Operates without cooling or heating 20 Multi Air Conditioner Function Display Function Cooling Model Operation Indicator O Cooling Soft Dry Fan Sleep Timer Indicator IX Sleep Mode Energy Saving Mode O Compressor on Indicator BOO St re Functio
12. intake air temperature reaches0 5 C below the setting temp the compressorand the outdoor fan stop When itreaches0 5 C above the setting temp they start to operate again Compressor ON Temp 2 Setting Temp 0 5 C Compressor OFF Temp 2 Setting Temp 0 5 C Whilein compressorrunning operating with the airflow speedset by the remote control While in compressor not running operating with the low airflow speed regardless of the setting Healthy Dehumidification Mode When the dehumidification operation input by the remote control is received the intake air temperature is detected and the setting temp is automatically set according to the intake air temperature 26 C s Intake Air Temp 2 25 C 24 C lt Intake Air Temp lt 26 C 2 Intake Air Temp 1 C 18 C lt Intake Air Temp lt 24 C 2 Intake Air Temp 0 5 C Intake Air Temp lt 18 C 2 18 C While in compressor off the indoor fan repeats low airflow speed and pause Whilethe intake airtemp is between compressoron temp and compressoroff temp 10 min dehumidification operation and 4 min compressor off repeat Compressor ON Temp 2 Setting Temp 0 5 C Compressor OFF Temp 2 Setting Temp 0 5 C In 10 min dehumidification operation the indoor fan operates with the low airflow speed 22 Multi Air Conditioner Operation Details 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 spe
13. unit against the installation plate until the hooks engage into their slots click ing sound Connecting the pipings to the indoor unit and drain hose to drain pipe Align the center of the pipes and sufficiently tighten the flare nut by hand Flarenut Pipes n Tighten the flare nut with a wrench Indoor unit tubing Wrench Indoor unit tubing ER Outside diameter Torque mm inch kom 26 35 1 4 18 29 52 3 8 42 012 7 1 2 55 015 88 5 8 66 19 05 3 4 66 When extending the drain hose at the indoor unit install the drain pipe Adhesive VINY tape narrow Wrap the insulation material around the con necting portion Overlap the connection pipe insulation material and the indoor unit pipe insulation material Bind them together with vinyl tape so that there is no gap Plastic bands Insulation material CT fur 77 da Wrap the area which accommodates the rear piping hous ing section with vinyl tape Connection Indoor pipe unit pipe Vinyl tape Wrap with vinyl tape wide Connecting cable Vinyl tape narrow Service Manual 43 Bundle the piping and drain hose together by wrapping them with vinyl tape for enough to cover where they fit into the rear piping housing section Wrap with vinyl tape Pipe Vinyl tape wide Drain hose For left rear piping Route the indoor tubin
14. 10 559010 447910 249951 W6640 W6640 669010 Fuse Assembly 669010 437212 437210 137213 435301 435511 435512 NOTE Please ensure GCSC since these parts may be changed depending upon the buyer s request GCSC WEBSITE http biz LGservice com 52 Multi Air Conditioner Exploded View and Replacement Parts List T2UC242FAA 7 LIL OOL 00000 00444444407 722277 4 4 Service Manual 53 Exploded View and Replacement Parts List Parts List LOCATION No DESCRIPTION ne an T2UC242FAA CODE M242CX 430410 Base Assembly Qutdoor 3041A30012W 552203 21800 552203 gt motseoD_ 552203 7 5220AR2609F 554160 Compressor 7 MCB42528801 554031 CondenserAssembly Bending 5403A20058H 552114 Assembly Discharge Qutdoor AJR31190003 552114 _lAssembly Discharge Outdoor AJR31021803 552111 Assembly Capillary AJR31194203 552102 Tube Capillary Bending 5210A20710T 552111 Assembly Capillary AJR31194204 552102 Bending 5210A20710U 552117 Assembly Suction Outdoor AJR36907501 Wws210D_ Jupe
15. AREA 075 MIR Cable Type B HO7RN F Op 48 Multi Air Conditioner Exploded View and Replacement Parts List u Exploded View and Replacement Parts List Indoor Unit Service Manual 49 Exploded View and Replacement Parts List Parts List Indoor LOCATION No DESCRIPTION PART No SVC TMNC092DYAA TMNC122DYAA CODE M092CD M122CD Bearing 35211 Assembly Connector 135311 Grille Assembly Discharge Indoor AEB30975809 AEB30975809 146811 4681A20117A 4681A20117A 249951 Case Assembly Control Indoor ABQ36627502 ABQ36627503 6640000036A 6640000036A WOCZZ Capacitor Film Box 3H01487A 3H01487A O R O R O R R OR OR 135516 Joer 3551A30166A 3551A30166A R O R OR O R R IR NOTE Please ensure GCSC since these parts may be changed depending upon the buyer s request GCSC WEBSITE http biz LGservice com 50 Multi Air Conditioner Exploded View and Replacement Parts List T2UC182FAA N Service Manual 51 Exploded View and Replacement Parts List Parts List PART No SVC LOCATION No DESCRIPTION T2UC182FAA CODE M182CX 430410 554170 554030 148390 552117 552204 552114 552203 552203 Valve Service 5220AR2609E 552204 349600 5468
16. ER Terminal on the INDOOR UNIT Terminal on the INDOOR UNIT SUPPLY B Unit C Unit M242CXuo M242HXuo Terminal on the OUTDOOR UNIT 4 L 2 N 4 L 2 N 3 4 3 8 rt 4 js 1 y Y Y Y 2 vo Jaw 3 4 o a9 SO 3 4 POWER Terminal on the INDOOR UNIT Terminal on the INDOOR UNIT SUPPLY A Unit B Unit 2 Secure the cable onto the control board with the hold er clamper 3 Refix the cover control to the original position with the Screw 4 Use a recongnized circuit breaker between the power source and the unit A disconnection device to ade quately disconnect all supply lines must be fitted Outdoor unit Terminal block cord Power cord Service Manual 47 Connecting the cable between indoor unit and outdoor unit A CAUTION The power cord connected to the outdoor unit should be complied with the following specifications ETL recognized and CSA certified T2UC182FAA T2UC242FAA mm T A Grade NORMAL CROSS T2UC182FAA T2UC242FAA 1 SECTIONAL AREA oN oN 25 25 2 2 Cable Type B HO7RN F HO7RN F 7 The power connecting cable connected to the indoor and outdoor unit should be complied with the following specifications mm NORMAL CROSS Grade e SECTIONAL
17. S E RO1W 403 404 lt O EEPROM 05 01 CH Ww CN WRITE Service Manual 15 Electronic Control Device Gau A S LEDI LED2 LED3 056 RO1G RO2G RO4G PWB P No 6870A90240A ASSY 6871420574 SW_T R13L W_TACT mmm 16 Multi Air Conditioner lt A Schematic Diagram ZLS02VL289 4I4 WEN E V8 206V0 89 HOd 17 Service Manual Schematic Diagram Indoor Unit
18. a soldering short at following terminals Between 60 61 62 63 of MICOM Between Gand of ICO1M Between 44 and dp of ICO1M xum 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 38 Multi Air Conditioner Installation u Installation Select the best Location 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 interval between a wall and the left or right of the unit is more than 50cm The unit should be installed as high as possible on the wall allowing a minimum of 10cm from ceiling 6 Use a stud finder to locate studs to prevent unnecessary damage to the wall A CAUTION aan 7 Install the indoor unit on the wall where the 20cm height from the floor is more than 2 meters 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 spaces indicated by arrows around front back and side of the unit 3 Do not place animals and plants in the path of the warm air 4 Take the air conditioner weig
19. ct fail There is risk of fire electric shock or product damage ure Service Manual 5 Safety Precautions ACAUTION Installation check for gas refrigerant Install the drain hose to Keep level even when leakage after installation or ensure that water is drained installing the product repair of product away properly Low refrigerant levels may cause fail A bad connection may cause water To avoid vibration or water leakage ure of product leakage Operational Use two or more people to lift Use a soft cloth to clean Do Do not touch the metal parts and transport the product not use harsh detergents sol of the product when removing vents etc the air filter They are very sharp Avoid personal injury There is risk of fire electric shock or There is risk of personal injury damage to the plastic parts of the prod ID S 2 ML Do not step on or put anyting on the product Do not insert hands or other objects through outdoor units the air inlet or outlet while the product is oper ated There is risk of personal injury and failure of product There are sharp and moving parts that could cause personal injury gt gt N S 6 Multi Air Conditioner Model T2UC242FAA 9 E N A 5 2 Y ES NA Dimensions Y NY
20. eat the procedure pumping down pin 32 Multi Air Conditioner Cycle Troubleshooting Guide Cycle Troubleshooting Guide Trouble analysis 1 Check temperature difference between intake and discharge air and operating current Temp Difference Operating Current Temp difference Current approx 0 C less than 80 of rated current Temp difference Current approx 8 C less than 80 of rated current Notice Temp difference Current less than 8 C over the rated current Temp difference over 8 C All amount of refrigerant leaked out Check refrigeration cycle Refrigerant leakage Clog of refrigeration cycle Defective compressor Excessive amount of refrigerant Normal 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 value Cause of Trouble Description High Defective compressor Current is low Higher Normal Excessive amount of High pressure does not quickly refrigerant rise at the beginning of operation Insufficient amount of Curr
21. ed selection key on the remote control Sleep Timer Operation When the sleep time is reached after lt 1 2 3 4 5 6 7 0 cancel hr is input by the remote control while in appli ance 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 temperature 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 Chaos Natural Wind Mode When the Chaos Natural Wind mode is selected and then operated the high medium or low speed of the air flow mode is operated for 2 15 sec randomly by the Chaos Simulation Jet Cool Mode Operation C O Model If the Jet Cool key is input at any operation mode while in appliance operation the Jet Cool mode operates In the Jet Cool mode the indoor fan is operated at super high speed for 30 min at cooling mode operation In the Jet Cool mode operation the room temperature is controlled to the setting temperature 18 C When the sleep timer mode is input while in the Jet Cool mode operation the Jet Cool mode has the priority When the Jet Cool key is input the uppe
22. eft piping Follow the instruction below Press on the upper side of clamp amp Service Manual 45 A CAUTION Bad case Following bending type from right to left could cause problem of pipe damage Flaring work and connection of piping 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 When tightening the flare nut with torque wrench ensure the direction for tightening follows the arrow on the wrench Outside diameter Torque mm inch kom 06 35 1 4 1 8 09 52 3 8 42 0127 1 2 5 5 015 88 5 8 6 6 019 05 3 4 6 6 46 Mutli Air Conditioner Outdoor unit Gas side piping p Bigger diameter Liquid side piping Smaller diameter Torque wrench Connecting the cable between indoor unit and outdoor unit Connecting the cable between indoor unit and outdoor unit Connection of the cable 1 Remove the cover control from the unit by loosening the screw Connect the wires to the terminals on the control board individually as the following M182CXuo M182HX uo Terminal on the OUTDOOR UNIT 4 L 2 N 1 L 2 N 3 a c Y 1 0 2 a GO 3 4 o a GO 3 4 POW
23. ent is low Lower Higher refrigerant Leakage Clogging Current is low Notice 1 The suction pressure is usually 4 5 6 0 kg cm G 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 33 Cycle Troubleshooting Guide Electro Product does not operate at all Refer to Electronic Control Device drawing and Schematic diagram Turn off Main Power JL After 10 seconds Turn on Main Power E Does beeping sound is made from the Indoor Unit Ser Primarily the operating condition of Micom is OK Check the voltage of power About AC 220V 60Hz Main power s voltage JL Voltage applied to the unit Connecting method of Indoor Outdoor connecting cable Check each load Indoor Outdoor Fan Motor Check PWB Assembly Compressor Stepping Motor and contacting Fuse condition of related connector Pattern damage Varistor ZNRO1J gt Check the connection housing for contacting e Connector related to CNN RY COMP NO 3 Connector related to CN MOTOR Connector contacting of Outdoor Fan Compressor Display PCB Assembly Check i Main PCB Board Operation Check Items Content Remedy SMPS Transformer Indoor unit Input Voltage About AC220V 240V 10 Check the power voltage e Replace Trans Output Vo
24. f the case edges and the fins on the condenser and evaporator For installation always con Do not install the product on a Be sure the installation area tact the dealer or an defective installation stand does not deteriorate with age Authorized Service Center There is risk of fire electric shock It may cause injury accident or dam If the base collapses the air condition explosion or injury age to the product er could fall with it causing property damage product failure and personal injury Operational Do not touch operate the Do not place a heater or other Do not allow water to run into product with wet hands appliances near the power electric parts cable There is risk of fire or electrical shock There is risk of fire and electric shock It may cause There is risk of fire fail ure of the product or electric shock 4 Multi Air Conditioner Safety Precautions Do not store or use flammable gas or com If strange sounds or smell or smoke comes bustibles near the product from product Turn the breaker off or discon nect the power supply cable There is risk of fire or failure of product There is risk of electric shock or fire Do not open the inlet grille of the product dur Be cautious that water could not enter the ing operation Do not touch the electrostatic product filter if the unit is so equipped There is risk of physical injury electric shock or produ
25. fied by the following indications E WARNING This symbol indicates the possibility of death or serious injury ACAUTION This symbol indicates the possibility of injury or damage Meanings of symbol used in this manual are as shown below 2 N sure not to do Be sure to follow the instruction gt E A WARNING B Installation Do not use a defective or Do not let the air conditioner Always ground the product underrated circuit breaker run for a long time when the Use this appliance on a dedi humidity is very high and a cated circuit door or a window is left open There is risk of fire or electric shock Moisture may condense and wet or There is risk of fire or electric shock damage furniture Install the panel and the cover Always install a dedicated cir Use the correctly rated break of control box securely cuit and breaker er or fuse There is risk of fire or electric shock Improper wiring or installation may There is risk of fire or electric shock cause fire or electric shock Service Manual 3 Safety Precautions Do not modify or extend the Do not install remove or re Be cautious when unpacking power cable install the unit by yourself and installing the product customer There is risk of fire or electric shock There is risk of fire electric shock Sharp edges could cause injury Be explosion or injury especially careful o
26. g and the drain hose to the required piping hole position Insert the piping drain hose and the connect ing cable into the piping hole oo Q Vo 2o 2 0 0 Connecting cable Drain pipe 2 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 connection later Tape the drain hose and the connecting cable Connecting cable Indoor unit installation Hang the indoor unit from the hooks at the top of the instal lation plate Insert the spacer etc between the indoor unit and the installation plate and separate the bottom of the indoor unit from the wall Indoor unit Installation plate 8cm 44 Multi Air Conditioner Flaring work and connection of piping Connecting the pipings to the indoor unit and the drain hose to drain pipe Align the center of the pipes and sufficiently tighten the flare nut by hand DOOD Flare nut Pipes Indoor unit tubing Tighten the flare nut with a wrench Open end wrench fixed Indoor unit tubing Outside diameter Torque mm inch kom 06 35 1 4 1 8 09 52 3 8 4 2 012 7 1 2 5 5 015 88 5 8 6 6 019 05 3 4 6 6 When extending the drain hose at the indoor unit install the drain pipe Drain hose Adhesive Vinyl tape narrow Wrap the insulation material around the con necting portion Overlap
27. ht into account and select a place where noise and vibration are minimum 5 Select a place so that 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 Service Manual 39 Installation Fixing Installation Plate 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 installation 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 BS 70mm c 3 t i safely Left rear piping Right rear piping CHASSIS Distance mm Grade A B C D SY 50 105 59 105 Drill a Hole in the Wall Drill the piping hole with a 870mm hole core drill Drill the piping hole at either the right or the left with the hole slightly slanted t
28. ide valve s service port ed 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 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 2 Purge the air from the charge hose Open the valve at the bottom of the cylinder and Stopping partway will allow the gas to be dis press the check valve on the charge set to purge charged the air Be careful of the liquid refrigerant The If the system has been charged with liquid procedure is the same if using a gas cylinder refrigerant while operating the air conditioner 3 Open the low handle on the gauge and charge turn off the air conditioner before disconnecting the system with liquid refrigerant the hose If the system can not be charged with the speci 5 Mount the valve stem nuts and the service port fied amount of refrigerant it can be charged nut with a little at a time approximately 150g each Use torque wrench to tighten the service port time while operating the air conditioner in the nut to a torque of 1 8 kg m 4 2kg m 5 5kg m cooling cycle however one time is not suffi Be sure to check for gas leakage cient wait approximately 1 minute and then rep
29. inal position Optional Drain hose A CAUTION When install make sure that the remaining parts must be removed clearly so as not to damage the pip ing and drain hose especially power cord and connecting cable Flaring work and connection of piping For right rear piping Route the indoor tubing and the drain hose in the direction of rear right Drain hose Insert the connecting cable into the indoor unit from the out door unit through the piping hole Do not connect the cable to the indoor unit Make a small loop with the cable for easy connection 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 Connecting cable NOTE If the drain hose is routed inside the room insulate the hose with an insulation material so that dripping from sweating condensation will not damage furniture or floors Foamed polyethylene or equivalent is recommended Indoor unit installation Hook the indoor unit onto the upper portion of the installa tion plate Engage the two hooks of the rear top of the indoor unit with the upper edge of the installation plate Ensure that the hooks are properly seated on the installa tion plate by moving it left and right Connecting cable t Drain hose Press the lower left and right sides of the
30. ltage CO3D About DC12V e IC01D 7805 Output e DC 5V e Replace ICO1D Indoor Outdoor unit e 7036 Reset e Voltage of IC No 1 Replace faulty parts OSCO1B 8MHz DC 4 5V over and Soldering condition 34 Multi Air Conditioner Cycle Troubleshooting Guide The product is not operate with the remote controller Turn on Main Power m While the compressor has been stopped the compressor does not operate owing to the delaying function for 3 minutes after stopped E 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 Cause by the remote control Caused by other parts except the remote control aa mark d is displayed in LCD screen replace Check the contact of CN DISP1 connector Es Check the connecting circuit between the remote controller MICOM No amp R16 1 5k IR LED TR R17 10 or MICOM 67 R1 1 5k IR LED TR R2 1Q Check Display PCB Assembly Voltage between CN DISP1 DC 5V Es Check point e Check the connecting circuit between CN DIS1 R11L 100Q CO1A 100nF MICOM PIN Check Receiver Assembly Service Manual 35 Cycle Troubleshooting Guide Compre
31. n Error Indicator The function is to self diagnoisis airconditioner and express the troubles identifically if there is any trouble Error mark is ON OFF for the operation LED of evaporator body in the same manner as the following table If more than two troubles occur simultaneously primarily the highest trouble fo error code is expressed After error occurrence if error is released error LED is also released simultaneously To operate again on the occurrence of error code 12 be sure to pull out power cord and then re insert Having or not of error code is different from Model Error Error Display LED Code Indoor body operation LED Error contents SVC check point Indoor room temperature Indoor Thermistor once thermistor open short assembly check Indoor pipe temperature thermistor open short gt 3sec 3sec 3sec Service Manual 21 Operation Details Operation Details Hunetion of Contols e DISPAY C O Model Operation Indicator ON while in appliance operation OFF while in appliance pause Flashing while in disconnection or short in Thermistor 3 sec off 0 5 sec on Sleep Mode Comp Running Incidator While in appliance operation ON while in outdoor unit compressor running OFF while in compressor off Energy Saving Mode Cooling Mode Operation When the
32. n Open Servicing with charging cylinder Gas charging Open Open Open Servicing with charging cylinder Pressure check Open Open Open Servicing with charging cylinder Gas releasing Open Open Open Servicing with charging cylinder Service Manual 29 2 way 3 way Valve NW Liquid side Hi handle CLOSE Outdoor unit e Procedure 1 Confirm that both the gas side and liquid 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 con nect the manifold gauge to the service port of the gas side valve Connect the hose of the gauge with the push pin to the service port 4 Air purging of the charge hose Open the Low handle valve on the gauge slightly to air purge from the hose 5 Set the liquid side valve to the closed position 30 Multi Air Conditioner Operate the air conditioner at the cooling cycle and stop it when the gauge indicates 1kg cm g Immediately set the gas side valve to the closed position Do this quickly so that the gauge ends up indi cating 1kg cmo Disconnect the charge set and mount the liquid side and gas side valve caps and the service port nut Use to
33. o the outdoor side WALL Indoor Outdoor 5 mm 3 16 5 16 40 Multi Air Conditioner Installation The maximun allowable level and piping length Installation of the outdoor unit on an upper position TT 7 5m SS 7 5m E pu y Installation of the outdoor unit on a lower position 7 5m 7 5m 777777777777777777 Model Standard length pipi i i M g Max piping length of each indoor unit Max total piping length 20 182 TOUC242FAA 7 5m 15m 15m 30m A B Refrigerant Charge Indoor Unit Capacity Pipe Size Rated Max Additional Btu h Gas Liquid Length Length Refrigerant 18k 3 8 9 52mm 1 4 6 35mm 7 5 15 20g m 24k 1 2 12 7mm 1 4 6 35mm 7 5 15 30g m Extra refrigerant Extended length Rated length x Additional refrigerant Service Manual 41 Flaring work and connection of piping u Flaring work and connection of piping Flaring work Main cause for refrigerant leakage is due to defect in the flaring work Carry out correct flaring work using the follow ing procedure Cut the pipes and the cable Use the piping kit accessory or pipes purchased locally Measure the distance between the indoor and the outdoor unit Cut the pipes a little longer than the measured distance Cut the cable 1 5m longer than the pipe length pod Slanted U Rough
34. ooting Guide When indoor Fan does not operate Turn off Main power d Check the connection of CN MOTOR d Check the Fan Motor d Check the Fuse AC250V T2A d Check the related circuit of indoor Fan Motor Check the pattern Check the TRIAC The pin NO 58 of Micom and the part for driving TRIAC the input and output signal of ICO1M PIN NO 1 16 TRIAC Open Indoor Fan Motor never operate TRIAC short Indoor Fan Motor always operates in case of ON or OFF Turn ON Main Power Check the TRIAC high speed operation by remote control The Indoor Fan Motor is connected The voltage of PIN NO 1 orange and 3 yellow of CN MOTOR About AC 180V over XE TRIAC is not damaged M About AC 50V over mob TRIAC Check Service Manual 37 Cycle 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 U D Connector Check the soldering condition on PWB of CN U D Connector gt Check the operating circuit of the Vertical Louver Confirm that there is DC 12V between pinGXRED of CN U D and GND Confirm that there is
35. r lower vanes are reset to those of the initial cooling mode and then operated in order that the air outflow could reach further 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 Heat pump Model Cooling Model Room Temp gt 24 21 C s Room Temp lt 24 Room Temp lt 21 Operating mode Cooling Cooling Healthy Dehumidification Heating Indoor FAN Speed High High High High Setting Temperature 22 C 22 C 23 C 24 C 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 tem perature 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 f you want to stop the operation re press the button Service Manual 23 Operation Details 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
36. rque wrench to tighten the service port nut to a torque of 1 8kg m 4 2kg m 5 5kg m Be sure to check for gas leakage 2 way 3 way Valve All amount of refrigerant leaked TUN A Liquid side Outdoor unit manifold gauge Low JO LI L Vacuum pump Hi handle CLOSE Procedure 1 Confirm that both the liguid side valve and gas 7 Disconnect the charge hose from the vacuum side valve are set to the opened position pump 2 Connect the vaccum pump to the center hose of Vacuum pump oil the manifold gauge If the vacuum pump oil becomes dirty or deplet 3 Connect the service port of the gas side valve to ed replenish as needed the low side of the gauge 8 Mount the valve caps and the service port caps 4 Connect power supply to outdoor unit 5 Evacuation for approximately one hour Confirm that the gauge needle has moved toward 76 cmHg vacuum of 4 mmHg or less 6 Close the Low handle of the gauge turn off the vacuum pump and confirm that the gauge nee dle does not move approximately 5 minutes after turning off the vacuum pump Service Manual 31 2 way 3 way Valve After Evacuation Outdoor unit Gas side Charging cylinder i handle CLOSE Procedure 1 Connect the gauge to the charging cylinder 4 Immediately disconnect the charge hose from Connect the charge hose which you disconnect the gas s
37. ssor Outdoor Fan are unable to drive Turn on Main Power d Operate Cooling Mode ze by setting the desired temperature of the remote controller is less than one of the indoor temperature by 1 C at least d When in Air Circulation 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 RY FAN e Check the indoor temperature sensor is disconnected or not About 10kQ at 25 C d Check Relay RY COMP for driving compressor When the power About AC220V 240V is applied to the connecting wire terminal support transferred to compressor PWB Assembly is normal Check the circuit related to the relay Check point COMP ON COMP OFF Between Micom No 59 and GND DC5V DCOV Between ICO1M No 15 Below DC 1V About DC12V and GND app Dope d Turn off Main Power xm Check the electrical wiring diagram of outdoor side Check the abnormal condition for the component of Compressor Outdoor Fan Motor Check the open or short of conmecting wires between indoor and outdoor 36 Multi Air Conditioner Cycle Troublesh
38. 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 IT OL A Flaring work and connection of piping Wrap the area which accommodates the rear piping hous ing section with vinyl tape Connection lt 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 Reroute the pipings and the drain hose across the back of the chassis Piping for passage through piping hole Set the pipings and the drain hose to the back of the chassis with the tubing holder Hook the edge of tubing holder to tap on chassis and push the bottom of tubing holder to be engaged at the bottom of chassis Indoor unit installation Remove the spacer Ensure that the hooks are properly seated on the installa tion plate by moving it left and right Connecting cable t Drain hose Press the lower left and right sides of the unit against the installation plate until the hooks engage into their slots clicking sound A CAUTION Installation Information For left piping Good case For l
Download Pdf Manuals
Related Search