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Service manual multi

1. 55 33 MICOM n 12 GMS81608 12 I R50 Di RY SV4 4 3 22 RY SV3 2 2 R17 RY SV3 S 23 1 id R55 BUZ WON a 8 RIS R40 NTO RY SV4 1 10 ma 26 NOR n RIJ 42 2 1245 R12 28 R43 NT3 Ve reng 1 1 13 e m R44 ECO ar 315 29 R45 EC2 33 EZ 4 30 U 4 15112 ym 28 RY COMP A I Hh ROS 32 gt use mun ml R60 ANO 29 ES 07H ROZG1 5K__Ros R61 AN1 4 12 5 2 5 7 121 izk Si 158199 4 RY4 COMP A age 039 1 0 01 sik Mer T 1459496 0491 50_ 2 R63 AN3 25V R64 AN4 22 IRY COMP B INTO pex poa Bc sv wes i Seu mel peal R66 ANS Qa E o im ZOE ADD mp 05H gt 0 01 25V ZNROIJ 2 2 30 x RY FAN1 pc 57 RO3H 1K ROSH 1K
2. iagram Schematic D 1 Indoor SLIDE S W per 30K reo Di 7 8012 AN KRC107M ROIF 1K DISPLAY MICOM Am De Sv GMS81516 RISG 6 8K 2136 REMDCUN gt 5v 2 At 1 VI RD ER RO4H RISH RI4H RI3H RI7H Y 2 MP NE ROLES gt R13G 6 8K megma andang L ae R32pe E a m Pm 4 Avref C R33 61 amp cu 51867 7 SYNC R34 60 Je As 6 R66 AN6 BRK R3559 Z BRO 220uF 7 R65 AN5 BRO R36p8 Rm R64 AN4 HALT R3757 1065004 10 5 9 R63 AN3 DO ROOb6 saan AA f Dig1 0192 Gel R62 An2 D b5 2 15 VA o VN R61 AN1 02 R0254 rem 08 12 Re0 ANO p lt 15 b 13 R57 Pw41 04 R0452
3. 1 Indoor Unit Outdoor Unit Pd 2 WAY Valve 3 WAY Valve g Heat n Y EI Exchanger 3 WAY ny i Valve 2 _ Pipe Size Diameter inch Max Max ex Solenoid Valve piping length piping elevation Bug Capillary Gas Liquid q m m Cooling Deice 3 8 1 2 1 4 10 15 S9 d tems Heating Wiring Diagram e Indoor 19 21 FORCED OPERATION AUTO RESTART REMOTE MAIN PCB ASM SSR CONTROL SH CAPA CN POWER THERMISTOR q STEP MOTOR FUSE AC250V T2A CN DISP1 PILLAR TERMINAL DISPLAY PCB ASM INDOOR WIRING DIAGRAM e Outdoor 1 MHA 19 21 OPTION THERMISTOR j a MAIN PCB ASSY FUSE T3 15A THERMISTOR CN COM i CN TRANS 7s 3 30 aL TRANS FORMER WH GN YL ag V V V A ATA MAIN POWER GN YL WH V 7 2 TERMINAL BLOCK 2 N 1 L BR 1
4. Terminal on the OUTDOOR UNIT 1 L 2 N 3 3 12 19 3 102 1 1 1 1 1 1 1 Power cord dani H 1 1 1 Y 100 20 3 1002 B 3 10 2 3 Terminal on the INDOOR Terminal on the INDOOR UNIT Terminal on the INDOOR UNIT A UNIT B UNIT C UNIT 2 Attach the Grille onto the cabinet Grasp lower the left and right side of the Grille and engage four tabs on the top inside edge of the chassis Press the Grille toward the chassis until it will be back into place 30 3 Form pipings 1 Wrap connecting portion of indoor unit with the Insulation material and secure it with two Plastic Bands for the left pipings If you want to connect an additional hose the end of the drain outlet should keep distance from the ground Do not dip it into water and fix it on the wall to avoid swinging in the wind In case of the Outdoor unit is installed bellow position of the Indoor unit 2 Tape the Pipings drain hose and Connecting Cable from down to up 3 Form the pipings gathered by taping along the exterior wall and fix it onto the wall by saddle or equivalent In case of the Outdoor unit is installed upper position of the Indoor unit 1 Tape the Pipings and Connectiong cable from down to
5. 14 1856 PWMO 05 0551 gt 1 15 R55 Buz 06 6 2 4 5 m Um 777 777 EEPROM 4 bano m mc Klwumgm 07 1 90 2h m DISPLAY_PCB 8 d 17 R53 sray Ao Rios 3 1 8 4 7 18 R52 Sclk A1 R11 e 2 7 uc 12 19 R51 Sout A2 R12 6 0 3 6 JORG SS NUR lt R50 Sin A3 R13 45 Q 4 5 5 BSB E 15 21 R47 T30 A4 14 ha 16 43 pe R46 T10 5 1583 12 2 R45 EC2 Ri6 B R44 ECU A7 R17 41 A ICOIM TX E5 AB R20 40 REES xs R42 INT2 BI ISTEP MOTOR 27 1 22 QUIM LS RO2E 20 R40 INTO A12R23B7 nia KRC107M RESET A13R24B6 sos A14R25B5 sv Em BzoiE 31 XOUT 5 26 ste 55 168273 ik Nw B TT da RO2L QR 1 Te SUB PCB lt TRIAC INDOOR MATOR SVT MA laa 4 G Rc T2 213 1 R02C 4 7K Ae NE 22 100 1 2 T See Joe LT SH CAPACITUR krcaiser TSV 1 R Lm EE pe cm gt 02 050 a 158139 600 J acero 4 ds ele DC 12 ab 3i amp aal 2 INROL 1 1 i AEUTRA gt T Ll 1 T CN PDVER e5v 25 sv POWER TRANS steen 54 2 Outdoor 2 1 19 21 DC 5v ROIH IK 6 001 25V
6. 2 The product is with the remote control Turn on Main Power xm operate owing to the delaying While the compressor has been stopped the compressor does not function for 3 minutes after stopped When the compressor stopped low speed by force At this point the wind speed is not controlled by the remote controller When operated in the Sleeping Mode the wind speed 15 set to the Indoor Fan is driven by a low speed d Cause by the remote control d Caused by other parts except the remote control When the mark 44 is displayed in LCD screen replace battery Check the contact of CN DISPI connector d lt gt When the detect switch double key inside the remote controller door is fault it is impossible to operate temperature regulating A w and wind speed selecting Check DISP PWB Ass y Voltage between CN DISP1 D DC 5V d Check the connecting circuit between the remote con troller MICOM No 69 17 20 IR LED Q1 R16 2 2KO Check point e Check the connecting circuit between PIN RO1L 1K CO1L 680PF PIN Check Receiver Ass y 45 3 When cooling does operate Turn on Main Power d Operate Cooling Mode by setting the desired temperature of the remote co
7. JET COOL Setting the Time or Timer 0 2 Os 0 Timer Selection NOOR OFF OFF lt 0 0 Timer Setting SET Timer Cancel pi Cancel Sleep Mode Timer ON or Timer OFF x 1 2 8 4 5 6 7 Off Timer Airflow Direction Control Fan Operation Mode O Fan Operates without cooling or heating O RESET Product Specifications 1 MHA 19 Operation A Unit B Unit A Unit Onl B Unit Onl y y Item Unit Cooling Capacity 94 19 000 4 788 9 500 2 394 9 500 2 394 u h kca Heating Capacity 19 000 4 788 9 500 2 394 9 500 2 394 Moisture Removal 1 h 2 4 1 2 1 2 Power Source V Hz 1 220 240V 50Hz Indoor 7 0 7 0 Air Circulation m min Outdoor 53 Indoor 34 1 34 1 Level Outdoor 54 1 Cooling W 2 000 1 060 1 060 Heating 1 950 1 030 1 030 Runnig Cooling 8 8 4 7 4 7 Current Heating 8 3 4 5 4 5 E E R Cooling Btu h w 9 5 9 0 9 0 C O P Heating 2 8 2 7 2 7 Indoor 7 5 7 5 Motor Output Outdoor 82 9 Indoor 802 x 262 x 165 Dimensions W x H x D mm Outdoor 870 x 655 x 320 Indoor 7 Net Weight kg Outdoor 63 Refrigerant R 22 at 7 5m g 670 670 Airflow Direction Control Up amp Down O Remocon Type L C D Wireless Liquid 1 4 6 35 Service Valve Gas 3 8 9 52 Sleepin
8. B 2 N 1 1 E F DN ES Power cord SIL ERI 10 2 3 10 2 N 3 15 2 3 Terminal on the INDOOR UNIT Terminal on the INDOOR UNIT Terminal on the INDOOR UNIT A UNIT B UNIT C UNIT Outdoor unit Terminal block Holder for 5 power supply Power 2 Secure the cable onto control board with the holder 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 adequately disconnect all supply lines must be fitted Caution If a power plug is not to be used provide a circuit breaker between power source and the unit as shown below Main power source Air Conditioner Main power source Air Conditioner 1 Circuit Breaker Use a circuit breaker or time delay fuse 14K 15K 17K 19K 20K 21K O Circuit Breaker Use a 25A circuit breaker or time delay fuse 30K CAUTION The power cord connected to the outdoor unit should be complied with the following specifica tions Rubber insulation type HO5RN F approved by HAR or SAA NORMAL CROSS SECTIONAL AREA 2 5mm or 3 5mm The connecting cable connected to the indoor and outdoor unit should be complied wit
9. CAPACITOR 3A00988B 3 00988 546810 MOTOR ASSEMBLY 4681A20013D 4681A20013A 559010 FAN ASSEMBLY PROPELLER 1 00195 1 00195 437210 PANEL ASSEMBLY FRONT 3721A20004L 3721A20004L 435301 GRILLE ASSEMBLY DISCHARGE 3530A20007B 3530A20007B 435512 COVER ASSEMBLY TOP 3H03266L 3H03266L 447910 BARRIER ASSEMBLY OUTDOOR 4791 30004 4791 30004 268711 PWB PCB ASSEMBLY MAIN 6871 200910 6871 200910 263230 THERMISTOR ASSEMBLY 6323 20002 6323 20002 649950 CONTROL BOX ASSEMBLY OUTDOOR 4995 2701 4995AP2701W 437212 GRILLE REAR 1 00207 1 00207 62 4 Outdoor Unit 30 1 63 Parts List Outdoor Unit LOCATION PARTNO o DESCRIPTION 430411 ASSY OUTDOOR 3041AP2741L 554031 CONDENSER ASSY BENT 5403 20066 554160 1 COMPRESSOR ASSY 2520UKVP2DA 554160 2 COMPRESSOR ASSY 2H02564F 550140 1 ISOLATOR COMP 4830AR4335A 550140 2 RUBBER GROMMET 5040 9417 567502 O L P 6750U L040A 552202 VALVE REVERSING 3A02027A 561410 1 ASSY REVERSING VALVE 6141AR3509C 561410 2 COIL ASSY REVERSING VALVE 6141AR3509B 6421A20001A 551410 SOLENOID ASSY 6421A20001B 6421A20001C 552203 1 VALVE SERVICE 1 2 2H01890D 552203 2 V
10. Heating Capacity 11 000 2 772 12 000 3 024 23 000 5 796 17 000 4 284 28 000 3 056 Moisture Removal 1 h 1 7 1 2 2 9 2 4 4 1 Power Source g V Hz 10 220 240V 50Hz Indoor 9 0 7 0 Air Circulation m min Outdoor 58 Indoor 34 1 884 a E Noise Level dB A Outdoor 60 Cooling 1 150 1 530 2 600 1 700 2 800 Input W Heating 1 030 1 950 2 700 1 500 2 400 Runnig Cooling x 5 1 7 0 11 5 7 7 12 3 Current Heating 4 5 9 0 13 6 8 10 8 E E R Cooling Btu h w 9 5 6 5 8 1 10 10 C O P Heating 3 1 1 8 2 5 3 3 3 4 Indoor 13 7 5 Motor Output Outdoor 82 9 Indoor 900 x 280 x 178 802 x 262 x 165 Dimensions W x D mm Outdoor 870 800 x 320 Indoor 9 7 Net Weight kg Outdoor 68 Refrigerant R 22 at 7 5m g 770 1 250 Airflow Direction Control Up amp Down O Remocon Type L C D Wireless 1 4 6 35 Se NANG 1 2 12 7 3 8 9 52 Sleeping Operation O Drain Hose O Dimensions 1 Indoor Unit Tubing hole cover Installation plate 6K 7K 8K 9K Left rear piping Right rear piping 50 _ g70mm 270mm g70mm 6K 7K 8K 9K 10K 12K MODES 6K 7 8K ok Series 9 10 12K Btu Series mm
11. Sleep Mode m Timer Indicator O 4 Timer Indicator Timer Mode Timer Mode Defrost Indicator Compressor on Indicator DOOR Hot start Defrost Self diagnosis Function Bi 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 H 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 LED Indoor body operation LED Error contents SVC check point Indoor suction temperature once thermistor open short GA Kessel RA Indoor pipe temperature thermistor open short Indoor TH ass y check l K KE Outdoor suction temperature thermistor open short Outdoor pipe temperature thermistor open short Outdoor TH check 1 1 3sec Abnormal operation of product Simultanueous operation of cooling and heating Resetting of remocon operating mode TTT st EA Poor communic
12. Used to select fan speed in four steps low medium high or CHAOS JET COOL Used to start or stop the speed cooling Speed cooling operates super high fan speed in cooling mode Flip up door closed CHAOS SWING BUTTON Used to stop or start louver movement and set the desired up down airflow direction 35 2 Name and Function Remote Control Door Opened Remote Control Signal transmitter Transmits the signals to the room air conditioner BUTTONS Used to set the time of starting and stopping operation dA n SH TIME SETTING BUTTONS Used to adjust the time S Soni TIMER SET CANCEL BUTTONS 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 turns indoor fan on off ROOM TEMPERATURE CHECKING BUTTON Used to check the room temperature RESET BUTTON Used prior to resetting time or after replacing batteries 36 Disassembly of the parts Indoor unit Warning Disconnect the unit from power supply before mak ing any checks Be sure the power switch is set to OFF To remove the Grille from the Chassis Set the up and down air discharge louver to open position horizontally by f
13. Y N 7 G A A A UNIT TO INDOOR UNIT OUTDOOR WIRING DIAGRAM 2 1 L T 7 gt IN B UNIT 3854AP3911C 3854A20023B 2 MHA 30 H RY COMP B SIS 2122 MAIN PCB ASSY FUSE m CN COI SL CN TRANS M TRANS 4 FORMER BL WH WH BK Vel EV Y 2 N 3 2 N Gb 3 Ly Y A A UNIT B UNIT C UNIT TO INDOOR UNIT OUTDOOR WIRING DIAGRAM 3 2 N 1 L U 12 REUS m MAIN POWER 3854 20 THERMISTOR THERMISTOR TERMINAL BLOCK AE 9 075Y Operation Details 1 MAIN UNIT FUNCTION e DISPLAY 1 C O Model Operation Indicator On while in appliance operation off while in appliance pause Flashing while in disconnection or short in Thermistor 3 sec off 0 5 sec Sleep Timer Indicator On while in sleep timer mode off when sleep timer cancel or appliance operation pause Timer Indicator On while in timer mode on off off when timer mode is completed or canceled Comp Running Incidator While in appliance operation on while in outdoor unit compressor running off while in compressor
14. 802 888 H mm 262 287 D mm 165 170 2 Outdoor Unit 19 21 30 gt E Y A a 3 M Y gt Y NA h 5 Ser Gas side ij SS So 3 Way valve d O E om Liquid side 5 2 Way valve L L7 L8 21 30 Sa MHA 19 W mm 870 870 mm 655 800 320 320 L1 mm 370 370 L2 mm 25 25 L3 mm 630 775 L4 mm 25 25 L5 mm 546 546 L6 mm 160 160 L7 mm 160 160 L8 mm 64 64 L9 mm 76 5 76 5 L10 mm 50 50 Refrigeration Cycle Diagram 1 MHA 19 21 Indoor Unit Outdoor Unit 1 COOLING XA og i i O T VE IF ee Cousine E 2 Di J CAPILLARY TUBE CAPILLARY TUBE u Size Diameter inch Max Max mm Capillary piping length piping elevation Cooling amp Deice Gas Liquid m m Heating 3 8 1 2 1 4 10 15 5 7 2 30
15. Check the connector of intake and pipe sensor thermistors Check the related circuit of RO2H 12 1K RO1H 1 0K RO4H 6 2K RO3H 1 0K Check the indoor room temperature is disconnected or not about 25 Check the indoor pipe temperature 15 disconnected or not about 5KQ at 25 Check the DC voltage on the PWB ASS Y The details of check are as followings Comp Relay 4 Way Relay Check point Comp ON Comp OFF Check point 4 Way ON 4 Way OFF Between two pin About DC Between two pin of DC part in relay Below DC 1V of DC part in relay Below DC 1V About DC 12V 12V for COMP for 4 way lE Check Outdoor Unit 49 7 Outdoor unit does at all Check Outdoor lt gt PCB Board Operation Check in Outdoor Items Content Remedy Power Transformer Outdoor unit About AC220V 240V 10 Check the power voltage Replace Trans Input Voltage About AC1413V Output Voltage 12V Replace 1 010 1 010 7812 Output Indoor Outdoor unit 5V Replace 1 020 IC02D 7805 Output Indoor Outdoor unit Replace faulty parts e IC01A KIA7036 Reset X01 8MHz 30 Turn off Main Power JE Check the electrical wiring diagram of outdoor side Check the abnormal condition for the compone
16. Guide 1 Product does not operate at all Refer to Electronic Control Device drawing and Schematic diagram Turn off Main Power l L After 10 seconds Turn on Main Power Does beeping sound is made from the Indoor Unit XU Check the voltage of power About AC 220V AC240V 50Hz Main power s voltage Voltage applied to the unit Connecting method of Indoor Outdoor connecting cable Check PWB Ass y Fuse Pattern damage Varistor ZNRO1J Primarily the operating condition of Micom is OK m Check each load Indoor Outdoor Fan Motor Compressor Stepping Motor etc and contacting condition of related connector gt Check the connection housing for contacting Connector related to CN POWER Display PWB Ass y Check Connector related to 1 Compressor LM 2163C2L M JE PCB Board Operation Check Items Content Remedy Power Transformer Outdoor unit Input Voltage About AC14 3V Output Voltage DC 12V 1 010 7812 Output Indoor Outdoor unit 5V e C02D 7805 Output Indoor Outdoor unit ICO1A KIA7036 Reset X01 8MHz About AC220V 240V 10 Check the power voltage Voltage of Micom No 2 DC 4 5V over and Soldering condition Replace Trans Replace IC01D Replace 020 Replace faulty parts
17. connection may cause the leakage and incomplete vacuuming 2 Attach the charging hose manifold gage to the service port Charging hose is necessary to check the pressure and to inject R22 for leakage test The valve of charging hose must be closed before being connected 3 lt Inject the 100 3000 R22 through the charging hose opening the valve 4 Check the joint part using a gas detector or soapy water for leakage On checking the service valve of main service port must be closed this test is only for checking whether pipe connection is ok or not 40 5 6 7 8 If there is leakage discharge R22 in piping completely into tank for retrieving Complete discharge is needed for vacuuming leakage is found please fasten the joint more tightly After closing the valve of charging hose discon nect the tank and connect the vacuum pump to charging hose and open the valve again for vacu uming Turn on the vacuum pump until the pressure drops below Okg cm After vacuuming disconnect the vacuum pump and open the spindle of service port liquid side slightly for 30 sec and then open the spindle of gas side with hexagonal wrench 9 Open the liquid side completely first and then the gas side fully in order 2 Disconnection on moving Outdoor unit e Disconnection 1 Attach the charging hose manifold gage to
18. off 2 H P 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 Sleep Timer Indicator On while in sleep timer mode off when sleep timer cancel or appliance operation pause Timer Indicator On while in timer mode on off off when timer mode is completed or canceled Defrost Indicator Off except when hot start during heating mode operation or while in defrost control Cooling Mode Operation When intake air temperature reaches 0 5 C below the setting temp the compressor and the outdoor fan stop When it reaches 0 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 0 5 While in compressor running operating with the airflow speed set by the remote control While in compressor not running operating with the low airflow speed regardless of the setting Healthy Dehumidification Mode When the dehumidification operation input by the remote control is received the intake air temperature is detected and the setting temp is automatically set according to the intake air temperature 26 C lt Intake Air Temp gt 25 24 lt Intake Intake Air Temp lt 26 C 2 Intake Air 1 18 lt Intake Intake Air lt 24 gt Intake Ai
19. 1 STEPPING MOTOR 4681AR2727H 4681AR2727H 352150 DRAIN HOSE ASSEMBLY 5251AR2575A 5251AR2575A 159901 VANE 5990AR7224A 5990AR7224A 135311 DISCHARGE GRILLE ASSEMBLY 3531A10074B 3531A10074B 135314 INLET GRILLE 3531A10092D 3531A10092D 135312 FRONT GRILLE ASSEMBLY 3531A10086J 3531A10086J 268714 PWB PCB ASSEMBLY MAIN 6871A20160P 6871A20160Y 152302 FILTER ASSEMBLY 5230AR2630A 5230AR2630A 131410 CHASSIS ASSEMBLY 3141A20001B 3141A20001B WOCZZ CAPACITOR 3H01487A 3H01487A 58 2 Indoor Unit 30 4 59 Parts List Indoor Unit LOCATION PARTNO NO DESCRIPTION HAS REMARK 733010 PLATE INSTALLATION 1H00843A 346810 MOTOR BLOWER 4681A20003P 131410 CHASSIS ASSEMBLY 3141A20003H 359011 CROSS FLOW FAN 5901AR6141C 342800 BEARING ASSEMBLY 3H02821B 354212 EVAPORATOR ASSEMBLY 5421A20031G 267110 REMOTE CONTROL ASSEMBLY 6711A20026Y 249951 CONTROLLER ASSEMBLY 4995A20062E 35211B TUBING ASSEMBLY 2H02449J 263230 THERMISTEOR ASSEMBLY 6323A20003A 352150 DRAIN HOSE ASSEMBLY 5251AR2575A 159901 1 VANE 5990A30013B 159901 2 VANE 5990A30014B 135311 DISCHARGE GRILLE ASSEMBLY 3531A10075C 135314 INLET GRILLE 3531A10093D 135312 FRONT GRILLE ASSEMBLY 3531A10087J 268714 PWB PCB ASSEMBLY MAIN 6871A20160Z 152302 FILTER ASSEMBLY 5230 20004 W0CZZ SH 3H01487A 268712 PWB PCB ASSEMBLY DISP
20. ALVE SERVICE 3 8 2A00393S 552203 3 VALVE SERVICE 1 4 2H02479J 137213 PANEL ASSY SIDE 3A02284R WOCZZ 1 CAPACITOR 6120AR2194F WOCZZ 2 CAPACITOR 3A00988B 546810 MOTOR ASSY AC 4681A20013D 559010 FAN ASSY PROPELLER 1A00195B 437210 PANEL ASSY FRONT 1A00197C 435301 GRILLE ASSY DISCHARGE 3530A20007B 435512 COVER ASSY TOP 3H03266H 447910 BARRIER ASSY OUTDOOR 4791 A30004B 268711 PWB PCB ASSY MAIN 6871A20091F 263230 1 THERMISTOR ASSY 6323A20002A 263230 2 THERMOSTAT ASSY 3Q35027H 649950 CONTROL BOX ASSY OUTDOOR 4781 27465 64 65 66 2002 3828 20097 Printed in Korea
21. Fan motor Remove the left end of the cross flow fan from the self aligning bearing Bearing 2 way 3 way Valve 2 way Valve Liguid Side 3 way Valve Gas Side Hexagonal wrench 4mm Open position Closed position Flare nut iping connection outdoor unit To N73 ipin piping connection Open position Service Service 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 1 Installation counter clockwise clockwise push pin or with vacuum pump Operation Open Open Closed with valve cap with valve cap with cap 5 Pumping down Closed Open Open Transfering clockwise counter clockwise connected manifold gauge Evacuation Open Open Open 3 Servicing with charging cylinder Gas charging Open Open Open 4 Servicing with charging cylinder Pressure check Open Open Open 5 Servicing with charging cylinder Gas releasing Open Open Open 6 Servicing with charging cylinder 39 1 Installation Connecting piping between indoor and outdoor unit Outdoor unit Purge the air e Installation 1 Connect the piping between the indoor and out door unit firmly Incorrect
22. 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 When the sleep timer mode is input while in the Jet Cool mode operation the Jet Cool mode has the priority When the Jet Cool key is input the upper lower vanes are reset to those of the initial cooling mode and then operated in order that the air outflow could reach further Jet Cool Mode Operation H P Model While in heating mode or Fuzzy operation the Jet Cool key cannot be input When it is input while in the other mode operation cooling dehumidification ventilation the Jet Cool mode is operated In the Jet Cool mode the indoor fan is operated at super high speed for 30 min at cooling mode operation In the Jet Cool mode operation the room temperature is controlled to the setting temperature 18 When the sleep timer mode is input while in the Jet Cool mode operation the Jet Cool mode has the priority When the Jet Cool key is input the upper lower vanes are reset to those of the initial cooling mode and then operated in order that the air outflow could reach further 17 Auto Restarting Operation When the power 15 restored after sudden power failure while in appliance operat
23. LAY 6871A20139A 146811 STEPPING MOTOR 4681AR2727H 60 3 Outdoor Unit 19 21 INK J LOTILI 61 Parts List Outdoor Unit PART NO LOCATION NO DESCRIPTION REMARK MHA 19 MHA 21 430411 BASE ASSEMBLY OUTDOOR 3041AP2741G 3041AP2741H 554031 CONDENSER ASSEMBLY BENT 5403A20049L 5403A20049F 554160 1 COMPRESSOR ASSEMBLY 2520UKRP2BA COMPRESSOR ASSEMBLY gt 5416 20019 5541 60 2 COMPRESSOR ASSEMBLY 2520UKRP2BA E COMPRESSOR ASSEMBLY 5417AR1681P ISOLATOR COMP 4H00982E 550140 1 ISOLATOR COMP 4984AR4361A ISOLATOR COMP 4984AR4361A 550140 2 ISOLATOR COMP 4H00982E O L P 6750U L002A S 567502 1 O L P 2 S 567502 2 O L P 67500 1002 67500 1002 VALVE REVERSING 5220AR3084A 552202 1 3 02027 552202 2 VALVE REVERSING 5220AR3084A 5220AR3084A 561410 1 COIL ASSEMBLY REVERSING VALVE 6141AR3509C 6141AR3509C 561410 2 COIL ASSEMBLY REVERSING VALVE 6141AR3509D 6141AR3509D VALVE SERVICE 3 8 2 003935 552203 1 VALVE SERVICE 1 2 2H01890D 552203 2 VALVE SERVICE 3 8 2 00393 2 003935 552203 3 VALVE SERVICE 1 4 2H02479J 2H02479J 137213 1 PANEL ASSEMBLY SIDE 1A00201G 1A00201D 137213 2 PANEL ASSEMBLY SIDE 3A02284M 3A02284M W0CZZ 1 CAPACITOR 6120AR2194F 6120AR2194D W0CZZ 2
24. MICOM ux F GMS81608 E R7 RY SV1 RY BP2 RY BP1 GC RY COMP A 0 5 LSV ES R01GJ 5K 12 VIS 89201 5K R036 1 5K Se 4 E L3 SV3 9591 See RO4G 1 5K gt 0010 0040 0050 15 139 600 RO2A 4 7K Som NEUTRAL C3198Y 56 Exploded View and Replacement Parts List 1 Indoor Unit MHA 19 21 57 Parts List Indoor Unit LOCATION PARTNO NO DESCRIPTION rer TES REMARK 733010 PLATE INSTALLATION 3300A10002A 3300A10002A 346810 MOTOR BLOWER 4681A20003C 4681A20003C 359011 CROSS FLOW FAN 5901AR6141A 5901AR6141A 342800 BEARING ASSEMBLY 3H02821B 3H02821B 354212 EVAPORATOR ASSEMBLY 5421A90002A 5421A90002A 267710 REMOTE CONTROL ASSEMBLY 6711A20026Y 6711A20026Y 249951 CONTROLLER ASSEMBLY 4995A20149Q CONTROLLER ASSEMBLY 4995 10029 35211 TUBING ASSEMBLY 5211AR7288K 5211AR7288K 268712 PWB PCB ASSEMBLY DISPLAY 6871A20139A 6871A20139A 263230 THERMISTEOR ASSEMBLY 6323A20003A 6323A20003A 14681
25. More than eye level I More than 10 cm More than 10 cm More than 70 cm Indoor unit Outdoor unit 2 Indoor Unit Installation The mounting wall should be strong and solid enough to protect it from the vibration 1 Mount the installation plate on the wall with four Type A screws If mounting the unit on the concrete wall consid er using anchor bolts Always mount the Installation plate horizontally by aligning the marking off line by means of the thread and a level 2 Drill the piping hole with 70mm dia holecore drill Line according to the arrows marked on lower the left and the rght side of the Installation Plate The meeting point of the extended line is the center of the hole Drill the piping hole at either the right or the left and the hole should be slightly slant to the out door side marking off line 4 Thread Z Weight Type A screw The lower left and the right side of Installation Plate 6K 7K 8K 9K Btu Left rear piping Right rear piping Jr 5 50mm g70mm g70mm 10K 12K Btu Left rear piping Right rear piping Wall Outdoor Indoor WI 5 7mm 22 2 Piping and Drainage of Indoor Unit 1 Preparation of pipings 1 Cut the pipes and the cable Use the accessory piping kit or the pipes chased locally Measur
26. Multi Room Air Conditioner SERVICE MANUAL MODELS MHA 19 MHA 21 MHA 30 Contents Le Tiet EE 3 e e TEEN 5 DIMENSION 8 Refrigeration Cycle Diagram vennen neel 10 A dee 12 Operation Details o o tailed un etti enke ineen RO nd 13 Display d Let 20 Self Diagnosis e e 20 E EU EEN 21 DS AEN EE 35 Disassembly of the parts Indoor Unit 37 2 Way 3 Way Valve ia dr daria 39 40 Cycle Troubleshooting Guide nsn 43 Electronic Parts Troubleshooting Guide 44 Electronic Control tra diei li lia 51 in o cis 54 Exploded View and Replacement Parts 57 Functions 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 O Lights up in operation Ww Ligh
27. Temp D Setting Temp 3 At the beginning of Fuzzy mode operation the setting temperature is automatically selected according to the intake air temp at that time 20 CxIntake Air Temp 2 Intake Air Temp 0 5 C Intake Air lt 20 220 When the Fuzzy key Temperature Control key is input after the initial setting temperature is selected the Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule While in Fuzzy operation the airflow speed of the indoor fan is set to the high or the medium according to the intake air temperature and the setting temperature Speed Selection airflow speed of the indoor fan is set to high medium low or chaos auto by the input of the airflow speed selection key on the remote control On Timer Operation When the set time is reached after the time 15 input by the remote control the appliance starts to operate The timer LED is on when the on timer is input It is off when the time set by the timer is reached If the appliance is operating at the time set by the timer the operation continues 16 Off Timer Operation When the set time is reached after the time is input by the remote control the appliance stops operating The timer LED is on when the off timer is input It is off when the time set by the timer is reached the appliance is on pa
28. amp Heating This product has a preventive function of cable mis connection In case of mis connection in case that the cables between indoor and outdoor units have not been connected properly it gives a warning signal of LED flickering 3 minutes after starting operation Press the forced operation key more than 3 seconds Once Twice Once Twice 3 seconds F 3 seconds e F 3 CAUTION Don t turn on all the indoor units all at once when you check the connection status In that case the sensor can not be operated properly 7 Maximum Length of Pipe and Freon Extra Charge Charge amount per 1m Capacity STANDARD CONNECTION TYPE Charge am t g Btu h LENGTH m A B 1 7000 7 5 7 15 7 15 20 9000 7 5 7 15 7 15 20 12000 7 5 7 15 7 15 20 18000 7 5 7 15 7 15 40 24000 7 5 7 15 7 15 40 B Length INDOOR UNIT INDOOR UNIT A B mean indoor unit higher located than outdoor unit C D mean outdoor unit higher located than indoor unit OUTDOOR UNIT D Length 33 8 Test running 1 Connection of power supply 1 Connect the power supply cord to the inde pendent power supply 2 Prepare the remote control Insert two batteries provided Remove the battery cover from the remote con troller Slide the cover according to the arrow direction Insert the two batteries Two R03 or AAA dry cell batteries or
29. ates in case of ON or OFF d Turn ON Main Power d Check the SSR high speed operation by remote control The Indoor Fan Motor is connected The voltage of PIN NO 1 blue and 3 yellow of CN FAN or CN MOTOR About AC 180V over About AC 50V over SSR is not damaged SSR Check 47 5 When Vertical Louver does not operate Confirm that the Vertical Louver is normally geared with the 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 E Check the operating circuit of the Vertical Louver e Confirm that there is DC 12V between RED of CN U D and GND If there problems after above checks Confirm the assembly conditions that are catching and interfering parts in the rotation radial of the Vertical Louver 48 6 When Heating does not Turn ON Main Power gt Operate Heating Mode xt by setting the desired temperature of the remote control is higher than one of the indoor temperature 2 least JL In heating Mode the indoor fan operates in case the pipe temperature is higher than 28 E
30. ation Communication line circuit check twice once E I 3560 EES twice Misconnection of connecting cables 20 Primarily check refrigerant pressure Connecting pipe check Connecting cable check Installation 1 Installation of Indoor Outdoor unit 1 Selection of the best location 1 Indoor unit There should not be any heat source or steam near the unit There should not be any obstacles to prevent the air circulation place where air circulation in the room will be good place where drainage can be easily obtained place where noise prevention is taken into consideration Do not install the unit near the door way the spaces indicated by arrows from the wall ceiling fence or other obstacles Outdoor unit e If awning is built over the unit to prevent direct sunlight or rain exposure be careful that heat radiation from the condenser is not restricted There should not be any animals or plants which could be affected by hot air discharged the spaces indicated by arrows from the wall ceiling fence or other obstacles 3 Piping length and the elevation Pipe Size Max piping Max length Elevation GAS LIQUID A m B m 1 2 3 8 1 4 10 15 5 7 21 More than 5 CN
31. e the distance between the indoor and the outdoor unit Cut the pipes little longer than the measured distance Cut the cable 1 5m longer than the length of the pipe 2 Remove burrs Remove burrs from cut edges of pipes Turn the pipe end toward down to avoid the metal powder entering the pipe Caution If burrs are not removed they may cause a gas leakage 3 Flaring the pipes Insert the flare nuts mounted on the connection ports of both indoor and outdoor unit onto the copper pipes Some refrgerant gas may leak when the flare nuts are removed from the indoor unit as some gas is charged to prevent the inside of the pipe from rusting Fit the copper pipe end into the Bar of tool about 0 0 5mm higher See illustration Flare the pipe ends 4 Tape the flaring portion to protect it from the dust or damages ug Pipe cutter Point down 212 7 mm 1 2 0 0 5 mm 29 52 mm 38 0 0 5 mm 96 35 mm 1 4 0 0 5 mm Copper pipe Improper flaring yf i Inclined Surface Cracked damaged nf Uneven thickness When properly flared the internal surface flare will evenly shine and be of even thickness Since the flare part comes into contact with the connec tors carefully check the flare finish 2 Connection of Pipings 1 Remove the installation plate Pull the two A marked portion of bottom of the cha
32. equiv alent Be sure that the and directions cor rect Be sure that both batteries are new Re attach the cover Slide it back into position 3 Operate the unit at cooling operation mode for fifteen minutes or more Battery Cover Settlement of Outdoor Unit Anchor the outdoor unit with a bolt and nut a10cm tightly and horizontally on a concrete or rigid mount When installing on the wall roof or anchor the mounting base securely with a nail or wire assuming the influence of wind and earth quake In the case when the vibration of the unit is con veyed to the house settle the unit with an anti vibration rubber 2 Evaluation of the performance 1 Measure the temperature of the intake and discharge air 2 Ensure the difference between the intake temperature and the discharge one is more than 8 Tubing connection Discharge air 34 Operation 1 and Function Remote Control Door Closed Remote Control Signal transmitter Transmits the signals to the room air conditioner START STOP BUTTON Operation starts when this button is pressed and stops when the button is pressed again OPERATION MODE SELECTION BUTTON Used to select the operation mode ROOM TEMPERATURE SETTING BUTTONS Used to select the room temperature INDOOR FAN SPEED SELECTOR
33. f Defrost Control H P model Defrost operation is controlled by timer and sensing temperature of outdoor pipe first defrost starts only when the outdoor pipe temperature falls below 6 C after 60 minutes passed from starting of heating operation and more than 10 minutes operation of compressor Defrost ends after 12 minutes passed from starting of defrost operation or after the outdoor fan operates with in max 2 minutes 30 seconds when the outdoor pipe temperature rises over 12 C even it before 12 minutes The second defrost starts only when the outdoor pipe temperature falls below 6 C after 60 minutes passed from ending the first defrost and more than 10 minutes operation of compressor Cooling overload Control indoor fan by sensing outdoor pipe temperature One step down from setting fan speed if pipe temperature is oven 50 C and if below 45 lt operate setting temperature Heating overload H P models Outdoor fan ON OFF by sensing outdoor pipe temperature e Outdoor fan is OFF if pipe temperature is over 6 5 C and outdoor fan is ON if pipe temperature is below 0 C Outdoor fan is off if any one part is heating overload condition 14 Fuzzy Operation C O Model According to the temperature set by Fuzzy rule when the intake air temp is 0 5 or more below the setting temp the compressor 15 turned off When 0 5 or more above the setting temp the compress
34. for Dehumidification According to the setting temperature selected by Fuzzy rule when the intake air temp is 0 5 or more below the setting temp the compressor 1 turned off When 0 5 or more above the setting temp the compressor is turned on Compressor ON Temp 2 Setting Temp 0 5 Compressor OFF Temp 2 Setting Temp 0 5 C the beginning of Fuzzy mode operation the setting temperature is automatically selected according to the intake air temp at that time 26 lt Intake Air Temp 225 24 lt Intake Air lt 26 gt Intake Air Temp 1 C 22 lt Intake Air lt 24 gt Intake Air 0 5 18 lt Intake Air lt 22 2 Air Intake Air lt 18 218 When Fuzzy key Temperature Control key is input after the initial setting temperature is selected the Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule While in Fuzzy operation the airflow speed of the indoor fan repeats the low airflow speed or pause as in dehumidification operation 3 Fuzzy Operation for Heating According to the setting temperature selected by Fuzzy rule when the intake air temp is 3 C or more above the setting temp the compressor is turned off When below the setting temp the compressor is turned on Compressor ON Temp gt Setting Temp Compressor OFF
35. g Operation O Drain Hose 2 21 Operation A Unit B Unit A Unit Only B Unit Only Item Unit Cooling Capacity 21 000 5 292 12 000 3 024 9 000 2 268 Btu h kcal h Heating Capacity 22 000 5 544 12 500 3 150 9 500 2 394 Moisture Removal 1 h 2 9 1 7 1 2 Power Source V Hz 10 220 240V 50Hz Indoor 9 0 7 0 Air Circulation m min Outdoor 53 Indoor 39 1 37 1 Noise Level Outdoor 54 1 Cooli 2 200 1 280 1 080 Input Mo Heating 2 100 1 240 1 050 Runnig Cooling A 9 5 5 5 4 8 Current Heating 9 2 5 4 4 7 E E R Cooling Btu h w 9 5 9 4 8 3 C O P Heating 3 0 2 9 2 6 Indoor 13 7 5 Motor Output W Outdoor 61 Indoor 900 x 280 x 178 802 x 262 x 165 Dimensions W x H x D mm Outdoor 870 x 655 x 320 Indoor 10 7 Net Weight kg Outdoor 62 Refrigerant R 22 at 7 5m 9 860 770 Airflow Direction Control Up amp Down O Remocon Type L C D Wireless Liquid 1 4 6 35 ice Val uz 127 8 8 9 52 Sleeping Operation Drain Hose O 3 30 Operation A Unit C Unit or C B C Item Unit Cooling Capacity 11 000 2 772 10 000 2 520 21 000 5 292 17 000 4 284 28 000 7 056 Btu h kcal h
36. geration cycle Temp Difference Refrigerant leakage Clog of refrigeration cycle Defective compressor Temp difference Current 8 less than 80 of rated current Operating Current less than 8 the rated current Temp difference amount of refrigeran Current Excessive amount of refrigerant Temp difference over 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 Compared with the normal value Temperature Compared with the normal value Cause of Trouble Description High Defective compressor Current is low Defective 4 way reverse valve Higher Normal Excessive amount of High pressure does not quickly refrigerant rise at the beginning of operation Insufficient amount of Current is low Lower Higher refrigerant Leakage Clogging Current is low Notice 1 The suction pressure is usually 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 43 Electronic Parts Troubleshooting
37. ghten the flare nut with torque wrench until the wrench clicks Wrench tightening the nut with forque wrench ensure the direction for tightening fol lows the arrows on the wrench Pipe Size Torque Liquid Side 1 4 1 8kg m Gas Side 3 8 4 2kg m Gas Side 1 2 5 5kg m 8 Wrap the insulation material around the con necting portion CAUTION Take care to arrange the pipings drain hose and cables as the right upper picture for inserting it into the indoor unit and refixing the tubing holder easily 25 Connecting cable e Press the lower left and right side of the unit against the Installation Plate until the hooks engage with their slots sound click Drain hose Indoor unit S nut Pipings Spanner Torque wrench Plastic bands Insulation material CE O Wrap the insulation material around the connecting portion 9 Set the pipings and connecting cable to the back of the chassis with the tubing holder Hook the edge of tubing holder to tap on chas sis and push the bottom of tubing holder to be engaged in the bottom of chassis 10 Indoor unit installation Hook the indoor unit onto the upper portion of installation plate Engage the two hooks of the rear top of the indoor unit with the upper edge of the installation plate Ensure the hooks are properly seated on the installation pla
38. h the following specifications Rubber insulation type HO7RN F approved by HAR or SAA NORMAL CROSS SECTIONAL AREA 0 75mm or 1 3mm 28 4 Checking the Drainage and forming 1 Checking Drainage 1 Remove Grille from cabinet Set the up and down air direction louver to open position horizontally by finger pressure Remove the securing screws remove the Grille pull lower the left and right side of the grille toward you slightly tilted and lift it straight upward 2 Check the drainage Pour a glass of water on the evaporator Ensure if water flows hose of indoor unit without any leakage 29 Screw ES Connecting cable 2 Connect the cable to indoor unit 1 Connect the wires to the terminals on the gt control board individually according to the outdoor unit connection 2 SSS Ensure that the color of the wires of outdoor SS unit and the terminal No are the same as those of indoor unit respectively Terminal on the OUTDOOR UNIT 1 L 2 N 3 3 2 N 110 B 10 2 N 1 1 1 x Power cord I Connecting cable Y 10 2 N 3 10 2 3 Terminal on the INDOOR UNIT Terminal on the INDOOR UNIT A UNIT B UNIT
39. inger pressure Remove the securing screws To remove the Grille pull the lower left and right side of the grille toward you slightly tilted and lift it straight upward 1 To remove the sensor housing connect earth conductor step motor conductor with sen sor holder Motor Evaporator 8 P C B Jio Earth cor 37 Motor Conductor Power Conductor Sensor Conductor Step Motor Conductor 2 To remove the Control Remove securing screws Pull the control box out from the chassis care fully 3 To remove the Discharge Grille Pull the discharge grille out from the chassis carefully 4 To remove the Evaporator Remove screws securing the evaporator and the holder eva Unhook the tab on the right inside of the chas sis at the same time slightly pull the evapora tor toward you until the tab is clear of the slot 5 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
40. ion the mode before the power failure is kept on the memory and the appliance automatically operates in the mode on the memory The slide switch on the main unit of the appliance should be on the Auto Restarting position in order that the Auto Restarting operation is available Operation Mode that 15 kept on the memory State of Operation ON OFF Operation Mode Setting Temp Selected Airflow Speed Sleep Timer Mode Remaining Time of Sleep Timer unit of hour FORCED OPERATION AUTO RESTART REMOTE CONTROL Slide Switch Forced Operation C O Model To operate the appliance by force in case that the remote control is lost the forced operation selection switch is on the main unit of the appliance to operate the appliance in the standard conditions When the power is supplied while the slide switch is on the forced operation position or when the slide switch position is switched to the Auto Restarting position or test operation or switched from the remote control posi tion to the forced operation position while the power is on the forced operation is carried out When the slide switch position is switched from the forced operation position to the Auto Restarting position or the remote control position the forced operation is canceled and the appliance stops operating The forced operation is carried out in cooling mode with the setting temperature 22 C and the high speed of airflow While in forced operati
41. nt of Compressor Outdoor Fan Motor 4 way Check the open or short of connecting wires between indoor and outdoor 8 Communication error The control data can be transmitted or received between indoor and outdoor unit with one signal cable If the data be disturbed by any noise level the unit will be operated incorrectly In this case the indoor unit blinks the operation and operation LED on display and indoor fan outdoor fan COMP are not operated The unit can be reoperated by On Off control of Remocon 50 Electronic Control Device 1 Indoor e MAIN P C B ASSEMBLY 8 Z g PWB 6870 90005 518 5 6871420146 6871420160 POWER TRANS 51 2 Outdoor e MAIN P C B ASSEMBLY MB ig WK e 52 PCB 6870A90008K ASSY 2 sP e 7 CH 5 8 55893 e EEE 33885385 888 88
42. ntroller 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 effected by the temperature of Heat Exchanger EVA Check the sensor for indoor temperature is attached as close as to be d When the sensor circuit for indoor temperature and connector are in bad connection or are not engaged Compressor Outdoor Fan is stopped e Check the related circuit of RO2H 12 1K RO1H 1 0K RO4H 6 2k RO3H 1 0K Indoor unit Check the indoor temperature sensor is disconnected not About 10 at 25 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 Ass y is normal Check the circuit related to the relay Check point COMP ON COMP OFF Between two pin of DC Below DC 1V part in relay for COMP app About DC12V E Check Outdoor Unit 46 4 When indoor Fan does not operate off power Check the connection of CN FAN or CN MOTOR Check the Fan Motor Check the Fuse AC250V T2A d Check the related circuit of indoor Fan Motor The pin of Micom and the part for driving SSR Check the pattern Check the SSR SSR Open Indoor Fan Motor never operate SSR short Indoor Fan Motor always oper
43. on the key input by the remote control has no effect and the buzzer sounds 10 times to indicate the forced operation Forced Operation H P Model To operate the appliance by force in case that the remote control is lost the forced operation selection switch is on the main unit of the appliance to operate the appliance in the standard conditions When the power is supplied while the slide switch is on the forced operation position or when the slide switch position is switched to the Auto Restarting or test operation position or switched from the remote control posi tion to the forced operation position while the power is on the forced operation is carried out When the slide switch position is switched from the forced operation position to the Auto Restarting position or the remote control position the forced operation is canceled and the appliance stops operating forced operation is carried out in cooling mode with the setting temperature 22 and the high speed of n the forced operation mode the indoor fan is operated at low speed for around 15 sec and then the operation condition is set according to the intake air temperature as follows 24 C lt Intake Air Temp gt Cooling Mode Operation 22 C High Speed 21 lt Air Temp lt 24 C gt Dehumidification Operation 23 C High Speed Intake Air lt 21 C gt Heating Mode Operation 24 C High Speed 18 Remote Control Ope
44. on for Dehumidification Inatake Air Temp lt 21 C 2 Fuzzy Operation for Heating If any of the operation modes among cooling dehumidification heating mode operations is carried out for 10 sec or longer before Fuzzy operation the mode before Fuzzy operation is operated 1 Fuzzy Operation for Cooling According to the setting temperature selected by Fuzzy rule when the intake air temp 15 0 5 or more below the setting temp the compressor 15 turned off When 0 5 or more above the setting temp the compressor is turned on Compressor ON Temp gt Setting Temp 0 5 Compressor OFF Temp 2 Setting Temp 0 5 the beginning of Fuzzy mode operation the setting temperature is automatically selected according to the intake air temp at that time 26 lt Intake Air Temp D 25 C 24 lt Intake Air lt 26 gt Intake Air Temp 1 22 C lt Intake Air Temp lt 24 C 2 Intake Air Temp 0 5 18 C lt Intake Air Temp lt 22 C gt Intake Air Temp Intake Air lt 18 218 When Fuzzy key Temperature Control key is input after the initial setting temperature is selected Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule While in Fuzzy operation the speed of the indoor fan is automatically selected according to the tem perature 15 2 Fuzzy Operation
45. or 15 turned on Compressor ON Temp gt Setting Temp 0 5 Compressor OFF Temp 2 Setting Temp 0 5 the beginning of Fuzzy mode operation the setting temperature is automatically selected according to the intake air temp at that time 26 lt Intake Air Temp 2 25 C 24 lt Intake Air Temp lt 26 gt Intake Air Temp 1 22 lt Intake Air Temp lt 24 gt Intake Air Temp 0 5 18 C lt Intake Air Temp lt 22 gt Intake Air Temp Intake Air lt 18 218 When the Fuzzy key Temperature Control key is input after the initial setting temperature is selected the Fuzzy key value and the intake air temperature at that time are compared to select the setting temperature automatically according to the Fuzzy rule While in Fuzzy operation the airflow speed of the indoor fan is automatically selected according to the temperature Fuzzy Operation H P Model When any of operation mode is not selected like the moment of the power on or when 3 hrs has passed since the operation off the operation mode is selected When determining the operation mode the compressor the outdoor fan and the 4 way valve are off and only the indoor fan is operated for 15 seconds Then an operation mode is selected according to the intake air temp at that moment as follows 24 C lt Inatake Air Temp 2 Fuzzy Operation for Cooling 21 lt Inatake Air lt 24 gt Fuzzy Operati
46. r Temp 0 5 C Intake Air Temp 18 C 2 18 C 13 While in off the indoor fan repeats low speed and pause While the intake air temp is between compressor on temp and compressor off temp 10 min dehumidifica tion operation and 4 min compressor off repeat Compressor ON Temp 2 Setting Temp 0 5 C Compressor OFF Temp 2 Setting 0 5 In 10 min dehumidification operation the indoor fan operates with the low airflow speed Heating Mode Operation H P model When the intake air temp reaches 3 above the setting temp the compressor is turned oft When below the setting temp the compressor is turned on Compressor ON Temp 2 Setting Temp Compressor OFF Temp 2 Setting 3 While in compressor on the indoor fan is off when the indoor pipe temp is below 20 C when above 28 it operates with the low or setting airflow speed When the indoor pipe temp is between 20 and 28 it oper ates with Super Low while in sleep mode with the medium airflow speed While in compressor off the indoor fan 15 off when the indoor pipe temp is below 33 C when above 35 C it operates with the low airflow speed If overloaded while in heating mode operation in order to prevent the compressor from OLP operation the outdoor fan is turned on off according to the indoor pipe temp While in defrost control both of the indoor and outdoor fans are turned of
47. ration Mode When the remote control is selected the slide switch on the main unit the appliance operates according to the input by the remote control 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 sounds When a key is input by the remote control while the slide switch on the main unit of the appliance is on the forced operation position the error sound beep beep beep beep beep is made 10 times to indicate that the remote control signal cannot be received 19 Display Function 1 Heating Model 2 Cooling Model Operation Indicator O Operation Indicator D Cooling Soft Dry Fan Heating Cooling Soft Dry Fan Sleep Timer Indicator Ww 1 Sleep Timer Indicator Sleep Mode
48. re is the same if using a gas cylinder 3 Open the valve Lo side on the charge set and charge the system with liquid refriger ant the system can not be charged with the specified amount of refrigerant it can be charged with a little at a time approximately 1509 each time while operating the air condi tioner in the cooling cycle however one time is not sufficient wait approximately 1 minute and then repeat the procedure 42 This is different from previous procedures Because you are charging with liquid refriger ant from the gas side absolutely do not attempt to charge with larger amounts of liquid refrigerant while operating the air conditioner 4 S Immediately disconnect the charge hose from the 3 way 5 service port Stopping partway will allow the gas to be dis charged the system has been charged with liquid refrigerant while operating the air conditioner turn off the air conditioner before disconnect ing the hose 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 Cycle Troubleshooting Guide Trouble analysis 1 Check temperature difference between intake and discharge air and operating current Temp difference Current approx 0 C less than 80 of rated current All amount of refrigerant leaked out Check refri
49. ssis and pull the installation plate out of chas sis 2 Route the drain hose and the indoor tubing For left rear piping 3 Route the tubing and the drain hose straight backwards see figure 4 Insert the connecting cable into the indoor unit through the piping hole Do not connect the cable to the indoor unit Make a small loop with the cable for easy con nection later 5 Tape the tubing drain hose and the connecting cable Be sure that drain hose locates at the lowest side of the bundle Locating at the upper side can be a reason that drain water overflows drain pan inside the unit 24 s s bina heden ie an To remove the holder press 1 the bottom of the chassis near the holder upwards and the tab is clear of its hole Turn it clockwise approx 90 and remove it Gas side Connecting piping cable E Liquid side Drain hose piping 6 Indoor unit installation Hook the indoor unit the upper position of the installation plate Engage the two hooks of the rear top of the indoor unit with the upper edge of the installation plate Ensure the hooks are properly seated on the installation plate by moving it in left and right 7 Connecting the pipings to the indoor unit Align the center of the pipings and sufficiently tighten the flare nut with fingers Finally ti
50. t is subjected during the course of transportation Check them and make sure that they are all tightly fastened If they are loose it could give rise to burn out of the wires 4 Specification of power source 5 Confirm that electrical capacity is sufficient 6 See to that the starting voltage is maintained at more than 90 percent of the rated voltage marked on the name plate 7 Confirm that the cable thickness is as specified in the power sources specification Particularly note the relation between cable length and thickness 8 Never fail to equip a leakage breaker where it is wet or moist 9 The following troubles would be caused by voltage drop down Vibration of a magnetic switch damage on the contact point there of fuse breaking disturbance to the normal function of a overload protection device Proper starting power is not given to the compressor Ore 2 Connection of cable 1 Remove the cover control from the unit by loosen ing the screw Connect the wires to the terminals on the control board individually as the following Terminal on the OUTDOOR UNIT 10 2 3 1200101 1 D 2 N 1 k i Power cord 1 101 20 3 10 2 3 Terminal INDOOR UNIT Terminal on the INDOOR UNIT A UNIT B UNIT Terminal on the OUTDOOR UNIT 0 2 3 3 12N 3
51. te by moving it in left and right 26 Connecting cable Drain hose Press the lower left and right side of the unit against the Installation Plate until the hooks engages with their slots sound click 3 Connecting Pipings and the cable to Outdoor unit 1 Connecting the pipings to the Outdoor unit 1 Align the center of the pipings and sufficiently tighten the flare nut with fingers 2 Finally tighten the flare nut with torque wrench until the wrench clicks When tightening the nut with torque wrench Outdoor unit ensure the direction for tightening follows the arrow on the wrench B UNIT Pipe Size Torque Liquid side piping Liquid Side 1 4 1 8kg m Gas Side 3 8 4 2kg m Gas Side 1 2 5 5kg m Torque wrench CAUTION After the confirmation of the above conditions prepare the wiring as follows 1 Never fail to have an individual power specialized for the air conditioner As for the method of wiring be guided by the circuit diagram pasted on the inside of control box cover 2 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 in each active phase conductors 3 The screw which fasten the wiring in the casing of electrical fittings are liable to come loose from vibrations to which the uni
52. the service port Connect the manifold gage once to the ser vice port not stopping Stopping in the middle of process may cause the leakage 2 Purge the air in hose into special device such as retrieving tank opening the valve of charging hose gas side slightly and then close it tightly 3 Operate the air conditioner for 10 15 min until cycle is stabilized 4 Close the spindle of service port liquid side high pressure and wait till pressure of gas side low pressure drops below 5 After the needle of gage indicates below 0 kgf cm close the valve of gas side quickly and turn off the power 41 6 Disconnect the piping between indoor and outdoor unit and then put on service cap to the service port 3 Gas Charging After Evacuation Indoor unit Charging cylinder Outdoor unit e 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 scale and reverse the cylinder so that the sys tem can be charged in liquid state 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 refrig erant The procedu
53. ts up in Sleep Mode 9 Lights up in Timer Mode Lights up Deice Mode for Heat pump model Lights up in Compressor operation for Cooling model Health Dehumidification Operation Intermittent operation of fan at low speed Sleep Mode Auto Control Deice defrost control Heating The fan is switched to low Cooling med Heating speed 5 The unit will be stopped after 1 2 3 4 5 6 7 hours Both the indoor and outdoor fan stops during deicing Natural Air Control by CHAOS Logic Hot start after deice ends The fan is switched to intermittent or irregular operation Hot start Control Heating The fan speed is automatically switched from high to low speed The indoor fan stops until the Airflow Direction Control evaporator piping temperature will be The louver can be set at the desired position or swing reached at 26 up and down automatically Remote Controller Operation ON OFF Operation Mode Selection e Cooling Operation Mode Auto Operation Mode A model oriy Healthy Dehumidification Operation Mode Heating Operation Mode x Fan Speed Selection AD f F illl Se High nes Room Temperature Display High 39 C LOW 11 C O Temperature Setting HIGH LOW Cooling gt r Down to 18 G Heating Down to 16 C A Y Up to 30 Up to 30
54. up 2 Form the pipings gathered by taping along the exterior wall and the Trap to be required to prevent the room from entering the water 3 Fix the pipings onto the wall by saddle or equivalent 31 LLT 9 d 5 5 o D l CECI Connecting cable TTL Plastic band Trap is required to prevent water from entering into electrical parts Seal a small opening around the pipings with gum type sealer 5 Air Purging of the Pipings and indoor unit air which contains moisture remaining in the is refrigeration cycle may cause malfunction on the compressor 1 Confirm that both the liquid side valve and the gas side valve are set to the closed position 2 After connecting the piping check the joints for gas leakage with gas leak detector 3 Remove the service port nut and connect the gauge manifold and the vacuum pump to the service port by the charge hose 4 Vacuum the indoor unit and the connecting pipes until the pressure in them lowers to below 76cmHg 5 Disconnect the charge hose and fit the nut to the service port Tightening torque 1 8kg m 6 Remove the valve stem nuts and fully open the stems of the 2 way and 3 way valves with a hexagon wrench 7 Tighten the valve stem nuts of the 2 way valve and 3 way valve Outdoor unit i0 6 Preventive function of cable mis connection Cooling
55. use at the time set by the timer the pause continues Off Timer lt gt On Timer Operation When the set time is reached after the on off time is input by the remote control the on off timer operation is carried out according to the set time Sleep Timer Operation When the sleep time is reached after 1 2 3 4 5 6 7 0 cancel hr is input by the remote control while in 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 After another 30 min elapse it increases by 1 again When the sleep timer mode is input while in cooling cycle mode the airflow speed of the indoor fan is set to the low When the sleep timer mode is input while in heating cycle mode the airflow speed of the indoor fan is set to the medium Chaos Swing Mode By the Chaos Swing key input the upper lower 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 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

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