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AIR CONDITIONER

1. BRW BROWN 5 FAN MOTOR RED RED ibs WHI WHITE LOUVER A YEL YELLOW MOTOR 7 BLU BLUE DC MOTOR BLK BLACK GRY GRAY PNK PINK A ORN ORANGE GRN amp YEL GREEN 8YELLOW GRN GREEN 6151413 090060 r R R CN 10 BLKI 7 4 Ce N 04 5601 VARISTOR FF DSA v T6 3A 250 V E 101 DBO1T FOTEUSE I sj T R21 221 door e f LI 91 Em 8 E Loc ot oDCOV sl BLK ovs DET WHI CN30 i RED T MAIN P C BOARD MCC 821 006 1602 IC E IC01 I 1 CN GRN amp YEL 145 CN23 a I THERMO mia HEAT 4 Papen ae A S SENSOR EXCHANGER i _ L 1 H 516171819710 SENSOR 1 INFRARED RAYS RECEIVE L TC i AND INDICATION PARTS INDOOR 1 2 i TERMINAL S mboon n z BLOCK i i UNIT MAIN P C BOARD MCC 890 X os TRANSFORMER 1 OUTDOOR Fa k POWER SUPPLY UNIT
2. vye 551 lellno loq solWeS ur WIXLHpXp owu fi MOW 10001 0 ESAE JO 009 aa f JO 001 009 Z uoisuauuip uonejelsu SZE 864 09 os 061 a Avs i ig ot dr J 027 _ WM8IHSOL 104 1ououe 0 80 104 5 0 1 12 9 100pino 404 YANO urea 522 s lou 92 8 5 H lo N 021 l 606 00g Buiweiq IIeled 9 FILE SVM 04054 3 WIRING DIAGRAM 3 1 RAS 24UKHP E3 RAS 24UAH E3 1 COLOR IDENTIFICATION
3. Evaporator type Finned tube Indoor fan type Cross flow fan High fan Air volume Medium fan Low fan Fan motor output 30 Air filter OUTDOOR UNIT Honeycomb woven filter with PP frame RAS 24UAH E3 1 RAS 18UAH E3 1 Dimensions Net weight Condenser type Finned tube Outdoor fan type Propeller fan Airflow volume Fan motor output 65 Model Compressor 2JS386D5BB02 2JS350D5DA02 Output 1800 1700 Safety device IOL Td Sensor IOL Td Sensor Louver type Automatic louver Usable outdoor temperature range 10 24 15 43 Note 1 Capacity is based on the following temperature conditions Condition Temperature Indoor unit inlet air temperature FILE NO SVM 04054 JIS B8615 1 Cooling Heating Outdoor unit inlet air temperature Note 2 Charge refrigerant according to the table below Refrigerant RAS 24UKHP E3 RAS 24UAH E3 1 RAS 18UKHP E3 RAS 18UAH E3 1 No need to charge extra refrigerant 15 less 15 less extra refrigerant Over 15 m up to 25 m 30 g m Over 15 m up to 20 m 20 g m 2 1 Indoor Unit 2 CONSTRUCTION VIEWS FILE NO SVM 04054
4. YES YE Does inner Check charged amount of refrigerant Is compressor overload relay Check defective overload turned off shortly in compressor Check compressor NO operate Failure IS eircuil wiring Wiring check modification normal YES Is outdoor P C Outdoor P C board Replace board normal is defective P C board Connect TC Indoor P C board Replace sensor properly is defective P C board YES 09 Other cycle error 2 Is TC sensor resistance value 10 at 25 C normal NO Is TC sensor disconnected from the sensing element YES Does indoor fan operate YES Are filters clogged Clean filters NO Connect Is connector connected properly YES connector properly Is TC sensor Em resistance value ich 10 at 25 normal sensor Repace b Is ch d amount condenser Seer Anti freezing operation of refrigerant normal YES Charge refrigerant Is indoor fan motor normal YES Replace Is outside air YES fan motor low load NO Indoor P C board Replacd is defective P C board Anti freezing operation 43 FILE NO SVM 04054 OC Indoor TA sensor error Is 04 TA sensor connector Connect 04 proper connected properly properly Is TA sensor resistance value UIN Tensa 10 at 25 C normal p h Indoor P C board is defe
5. When the unit is in Timer operation if it is turned off because of power failure the timer operation is 7 8 1 How to turn off filter check lamp cancelled Therefore set the timer operation again Press FILTER button on the remote control OR push TEMPORARY button on the indoor unit Note If TEMPORARY button is pushed while the filter check lamp is not indicating the indoor unit will start the Automatic Operation 21 FILE NO SVM 04054 7 9 Self Cleaning function Self Cleaning function is designed to reduce humidity that causes mold to form inside the air conditioning unit This advanced efficient system reduces moisture in the coil When you turn off your air conditioner the internal fan activates and dries the moisture in the coil for 20 minutes then turns off automatically __ j s ON ON FCU fan rpm is depend on preseting rpm is SUL speed oet FCU louver OPEN CLOSE CLOSE Timer displa ON or OFF ON or OFF pay depend on preseting of timer function depend on E of timer function ON or OFF Compressor depend on preseting per room temperature CDU fan OFF depend on preseting per room temperature Cool mode or dry mode Self Cleaning mode Operation time operation more than 10 mins operate 20 mins Automatically turn off Turn off by remote controller or timer off function e The Self Cleaning function is set as default at ex factory e Self Cleaning operation can
6. 2 Loosen the set screw of the cross flow fan 3 Remove 2 screws fixing the bearing base and the back bogy 4 Pull the cross flow fan toward you When assembling the cross flow fan fix it with the set screw at the position where the gap between the back body and the right surface of the cross flow fan is 4 mm Bearing base 1 Remove the front panel electrical parts assembly horizontal grille heat exchanger and the cross flow fan with procedure 5 2 Remove the bearing from the bearing base If the housing protrudes from the base bearing put the housing in position and assemble the bearing to the bearing base 27 Bearing base o Bearing Fan motor 1 Remove the front panel electrical parts assembly horizontal grille and the heat exchanger with procedure 4 2 Loosen the set screw of the cross flow fan 3 Remove 2 screws of the motor fixture 4 Remove the lower side of the body R and move it right to remove it 5 Remove the motor from the motor fixture Motor fixture 8 10 2 Outdoor Unit RAS 24UAH E3 1 Part name Common procedure Procedures 1 Stop the operation of the air conditioner and turn off its main power supply or remove the power supply cord 2 Remove the electrical parts cover 4 screws 24 x 101 3 Remove 2 cord clamps 4 screws 24 x 221 and disconnect the power supply cord and connecting cable after removing 6 screwson on the terminal bl
7. 24 18 Low temperature 0 3 34 0 High 20 10 10 Standard 0 4 10 0 High 27 19 35 24 Cooling High temperature 0 5 15 0 High 32 23 43 26 Low temperature 0 3 1 0 Low 21 15 Note Measure the heat exchanger temperature at the center of U bend By means of TC sensor 1 During heating overload the high temperature limit control operation is included 13 21 15 FILE NO SVM 04054 6 CONTROL BLOCK DIAGRAM Indoor Unit Control Panel 1 Functions Operation Heat Exchanger Sensor poran 1 1 e Louver Control Display Timer Temperature Sensor Display 3 minute Delay at Restart for Compressor Filter Sign Display Infrared Rays Signal Receiver 1 Motor Revolution Control Louver Driver Noise Filter 1 1 Control 1 Serial Signal Transmitter Receiver pu E Aral S PRE DEF Initiallizing Circuit Processing Sign Display Infrared Temperature Processing R Clock Frequency Timer Hi Power Oscillator Circuit Sign Display Indoor Serial Signal Communication lt Fan Motor Power Supply Bei Circuit Louver ON OFF Signal emote 1 1 From Outdoor Unit 220 240 V AC 50 Hz Serial Signal Communication REMOTE CONTROL Infrared Rays Remote Control j 4 Operation START STOP Opera
8. When the unit is on standby Not operating Operation Motions Push TEMPORARY button for more The unit is on standby than three seconds J The unit starts to operate The green lamp is on After approx three seconds The unit beeps three times The lamp changes from and continues to operate green to orange TEMPORARY button If the unit is not required to operate at this time push TEMPORARY button once more or use the remote control to turn it off When the unit is in operation Operation Motions Push TEMPORARY button for more The unit is in operation The green lamp is on than three seconds The unit stops operating The green lamp is turned off After approx three seconds The unit beeps three times If the unit is required to operate at this time push TEMPORARY button once more or use the remote control to turn it on TEMPORARY button e While this function is being set if the unit is in e While the filter check lamp is on the operation the orange lamp is on TEMPORARY button has the function of filter e This function can not be set if the timer operation reset button has been selected e When the unit is turned on by this function the louver will not swing even though it was swinging automatically before shutting down 20 FILE NO SVM 04054 7 7 2 How to cancel auto restart function To cancel auto restart function proceed a
9. bt CNO6 DISCHARGE 220 240 V 50Hz NGC RED hyn BLU OUTDOOR 1 1 RED bps CN05 CN07 R iM m FERRITE CORE 1 GRNGVEL m 8001 ma 77 S l BLK F01 313 NO 4 BLK GRN amp YEL e 250VAC 6 TNR i GG R73 2 CNO1 X E gu BLK RED EM GRY 57 EXCHANGER SENSOR TE RY07 MAGNETIC CONTACTOR z BLUE f o o 4 CN11 A veia 1 L1 312 5 13 CRI1 620 Tj WT2 6 73 lt r I o S 2 0 ie T QM F CR12 COIL FOR 4 WAY VALVE cris RY06 CAPACITOR CAPACITOR o RED TX RED A S f Hp Hp k Si Nia Be eS Poe Ss wu Q e N Ad BLK AIA BLK BLK 7 NO 2 N bod ee COMPRESSOR TERMINAL COMPRESSOR FAN MOTOR 3 2 RAS 18UKHP E3 RAS 18UAH E3 1 COLOR IDENTIFICATION FILE NO SVM 04054 BRW BROWN 5 FAN MOTOR RED RED de WHI WHITE LOUVER Z YEL YELLOW MOTOR 7 BLU BLUE DC MOTOR BLK BLACK GRY GRAY PNK PINK A ORN ORANGE GRN amp YEL GREEN amp YELLOW GRN GREEN 6151413 6151413 X1 r me CN 10 BLKI 4 NED N 04 5601 V
10. 6 are for Heat pump model The display on the remote control does not change when Hi POWER button is pressed However the microcontroller gives commands to change the preset temperature and air flow level 38 9 3 Primary Judgement 9 3 1 Role of indoor unit controller The indoor unit controller receives the operation commands from the remote control and executes them Temperature measurement at the air outlet of the indoor heat exchanger by the indoor temperature sensor e Temperature setting of the indoor heat exchanger by the heat exchanger sensor Louver motor control Indoor fan motor operation control LED display control Transferring of operation commands to the outdoor unit FILE NO SVM 04054 9 3 2 Failure diagnosis The indoor unit diagnoses the operation condition and indicates the information of the self diagnosis with the lamps on the display panel of the indoor unit Table 9 3 1 Lamps Self diagnosis OPERATION lamp is blinking 1 Hz Power failure when the power supply is turning on OPERATION lamp is blinking 5 Hz Thermo sensor TA short or break Heat exchanger sensor TC short or break OPERATION lamp is blinking 5 Hz Indoor fan motor lock or failure 1 Hz 5 Hz OPERATION lamp is blinking 5 Hz 5 Hz OPERATION lamp is blinking 5 Hz Indoor P C board failure OPERATION and TIMER lamps are blinking 5 Hz Wrong wiring of conne
11. CONTACTOR des BLUE I o CN11 O h A T TERR 626 r F R pu um Pai S 2 10 QN n a BLU 12 COIL FOR 1 4 WAY VALVE cris RY06 CAPACITOR CAPACITOR o RED M RED AB AB k Nast Nia Be eS Poe Ss wu Q e WHI N PNK BLK RED AIA BLK BLK F 7 NO Z N i po cn COMPRESSOR TERMINAL COMPRESSOR FAN MOTOR FILE NO SVM 04054 1 4 SPECIFICATION OF ELECTRICAL PARTS 4 1 Indoor Unit Parts name Fan motor for indoor ICF 340 30 2 Specifications DC 340 V 30 W Thermo sensor TA sensor 10 at 25 C DC DC transformer TO1 SWT 58A DC 390 V Secondary DC 15 V 12V 7V Microcontroller TMP87CM40AN Heat exchanger sensor TC sensor 10 kQ at 25 C Line filter LO1 5511 07190 19 mH AC 0 7 A Diode DB01 D3SBA60 4 A 600 V Capacitor C02 KMH450VNSN120M25C 120uF 450 V Fuse 01 TSCR T6 3 A 250 V Power supply IC 01 MA8920 5 A 900 V Varistor R21 R22 15G561K 560 V Resistor RO1 RF 5TK4R7 4 7 Q 5W Louver motor Parts name Compressor 2JS386D5BB02 MP35EA12 4 2 Outdoor Unit RAS 24UAH E3 1 Output Rated 2 W 10 poles 1 phase DC 12V Specifications Output Rated 2200 W 2 poles 1 phase 220 240 V 50 Hz at 20 Winding resistance C R C S 0
12. GND for relay coil DC12 V 2 Between 1 and 2 of terminal block for connecting cable Check whether or not all lamps OPERATION TIMER PRE DEF or FAN ONLY ECONO and AUTO are indicated for 3 seconds and they return to normal 3 seconds later 54 Impluse voltage was applied or the indoor fan motor short circuited The terminal block or the crossover cable is connected wrongly The capacitor C01 and C15 line filter LO1 resistor RO1 or the diode DB01 is defective C01 ICO2 and are defective C01 02 and T1 are defective C01 02 ICO7 and T01 are defective Heat pump model 05 and 06 are defectice Cooling only model 1 The wire of the relay coil RYO4 comes down or the relay drive Q33 is defective 2 CN27 or RY04 is connected wrongly The lamps are defective or the housing assembly CN13 is defective Press START STOP button once to start the unit e Shorten the time of the restart delay timer Set the operation mode to COOL e Set the fan speed level to AUTO Set the preset temperature much lower than the room temperature The unit compressor operates continuously in the above condition If the above condition No 6 still continues start the unit in the following condition Set the operation mode to HEAT Set the preset temperature much higher than room temperature Connect the motor connector
13. the fan motor speed is automatically controlled by the difference between the preset temperature and the room temperature Table 7 1 1 RAS 24UKHP E3 RAS 18UKHP E3 MODEL Motor speed Air flow level Motor speed Air flow level rpm m3 h rpm m3 h Cooling HIGH 1350 950 1150 750 and MED 1150 750 1050 650 Fan only LOW 1000 600 900 530 HIGH 1350 950 1200 800 Heating MED 1200 800 1100 700 LOW 1050 650 950 570 LOW LOW MED 2 15 FILE NO SVM 04054 7 2 Description of Operation Circuit 7 2 2 Cooling operation 1 When turning on the breaker the operation lamp Meine us ME conrentecet blinks This means that the power is on or the power supply is cut off 1 The compressor 4 way valve outdoor fan and 2 When pressing START STOP button on the aU display lampara gontrolsd as Shown In remote control receiving beep sounds from the g i indoor unit and the next operation is performed QV ru together with opening the vertical air flow louver S u 3 Once the operation mode is set it is memorized in the microcomputer so that the previous operation 05 can be effected thereafter simply by pressing ES START STOP button 7 2 1 Fan only operation 5 MODE button on the remote control is set to the fan only operation Preset 0 temp 1 When FAN button is set to AUTO the indoor fan motor operates as shown in Fig 7 2 1 When FAN
14. 2 Nm 0 12 kgf m NOTE 7 Secure the connecting cable with the cord clamp Connect the earth line to the metallic part mark 8 Fix the terminal cover rear plate bushing and air located at the side of 3P terminal inlet grille on the indoor unit How to install the air inlet grille on the indoor unit e When attaching the air inlet grille the contrary of the removed operation is performed 30 FILE NO SVM 04054 8 4 5 Piping and Drain Hose Installation To connect the pipe after installation of the unit figure In case of rightward piping To the forefront of flare e After scribing slits of the body right by a knife or a making off pin cut them by a pair of nippers or the like Outward form of indoor unit core or the like for bending pipe qs R 30 mm Use polisin polyethylene 1 ig i lit Body righ Slit Body right Use the handle of screwdriver etc Fig 8 4 10 Fig 8 4 12 wnward piping gt lt In case of do ard piping NOTE If the pipe is bent incorrectly the indoor unit may unstably be set on the wall After passing the connecting pipe through the pipe hole connect the connecting pipe to the auxiliary pipes and wrap the facing tape around them CAUTION Bind the auxiliary pipes two and connecting cable with facing tape tightly
15. 23 43 26 Low temperature 0 3 1 0 Low 21 15 21 15 Note Measure the heat exchanger temperature at the center of U bend By means of TC sensor 1 During heating overload the high temperature limit control operation is included 12 FILE NO SVM 04054 5 2 RAS 18UKHP E3 RAS 18UAH E3 1 Cooling 0 49 Wl c Connecting pipe Heating 12 7 Ve O D 127 mm P Packed valve lt 2127 Heating 4 valve Heating _ gt Cooling 4 Heating Indoor unit _ Evaporator 1 gt Cross flow fan Gas container connection Reinstall etc Standard pressure MPaG Packed valve 26 35 gt 0 39 O D Surface temp of heat B Fan speed exchanger interchanging indoor Capillary tube 0 8 400 Ir Capillary tube 22 0x600 Condenser 4 PE mE Refrigerant Propeller fan R22 1 15 kg J Outdoor unit Mark means check points of Gas Leak necting pipe 26 35 6 35 mm Ambient temp conditions DB WB C pipe T C Indoor Outdoor Standard 0 4 45 0 High 20 7 6 Heating High temperature 1 0 5 0 6 49 0 58 0 Low 27
16. CLR button After service finish for clear service code in memory is indicated on the display of the remote control Press START STOP button to release the service mode The display of the remote control returns to as it was before service mode was engaged FILE SVM 04054 Table 9 4 1 Block level Diagnosis function Check Check Unit Judgement and action Block iti code code Symptom status Condition Indoor Vi The indoor thermo sensor TA is Operation The lamp on the 1 Check the indoor thermo sensor TA LULU board LU defective continues indoor unit blinks 2 Check the indoor P C board FG IT Disconnection or short circuit when error is defected 1 The indoor heat exchanger Operation The lamp on the 1 Check the indoor heat exchanger LI r sensor TC is defective continues indoor unit blinks sensor TC Disconnection or short circuit when error is 2 Check the indoor P C board defected I The indoor fan motor or its circuit All off The lamp on the 1 Check the connector circuit of the tl is defective indoor unit blinks indoor fan motor CN10 when error is 2 Check the indoor fan motor defected 3 Check the indoor P C board 7 The part other than the above Operation The lamp on the 1 Check the indoor P C board we parts on the indoor P C board is continues indoor unit blinks EEPROM and peripheral circuits defectiv
17. Gas purging when error is defected The IOL operation is defective All off The lamp on the When turning on the unit the normal indoor unit blinks when error is detected phase RST is detected but T R waveform has not been detected for 120 seconds or more 41 FILE NO SVM 04054 Check item Conceivable principle cause 9 5 How To Diagnose Faulty Parts 04 Serial signal error Heat pump model n Measure Item by symptoms NO Does outdoor unit operate Are 1 2 and 3 crossover Connect crossover wires connected properly wires properly YES YES Is connector Connect connector connected properly properly YES Does LED Orange on outdoor P C board blink Outdoor P C board is defective Does LED Green on NO outdoor P C board blink 1 08 Four way valve error Heat pump model Does four way valve operate properly YES Indoor P C board is defective Does coil terminal have 220 240 V in heating operation Are circuit wires normal YES Is outdoor P C board normal YES Four way valve is defective CN11 220 240 V Indoor P C board Replace is defective P C board Is TC sensor resistance value 10 at 25 C normal Replace TC sensor 42 FILE SVM 04054 09 Other cycle error 1 Heat pump model Does compressor operate
18. Holder Plate EVA Seal Plate EVA Seal Holder Plate EVA Seal Guide Drain Fix Motor Fan Motor Cord Motor Fan Fan Cross Flow M Bearing ASSY Base Bearing Back Body ASSY Holder Pipe Plate Installation Owner s Manual Owner s Manual Owner s Manual Owner s Manual Remote Control Wireless Holder Remote Control Cover Terminal 11 3 Outdoor Unit RAS 24UAH E3 1 Location No 43T00024 43T00025 43T00026 43T42307 43T19318 43T19011 43T91001 43T42005 43T15001 43743357 43746014 43746016 43747310 43747020 43747013 43760324 43760325 43741343 43762014 43762015 43749012 43749309 Description Panel Air Outlet Panel Front Panel Side Base Assembly Guard Fin Guard Fan Plate Roof Plate Valve Packed Handle Condenser Assembly Valve Packed 15 88 Dia Valve Packed 6 35 Dia Bonnet 15 88 Dia Bonnet 6 35 Dia Capillary Tube 2 0 Dia Terminal Block 6P Filter Clamp Compressor 2JS386D5BB02 Protector Cord Protector Cord Base Spring B Rubber Cushion Location No FILE NO SVM 04054 1 12 14 11 13 15 CAPILLARY TUBE 2 0 DIA 49 CAPILLARY TUBE 1 0 DIA Description 43T21315 43T20301 43T96001 43T96004 43T62013 43T52305 43T55319 43T55317 43T96003 43746319 43746310 43769059 43769060 43779305 43758301 43769336 43747317 43045085 43747308 43746005 Motor Fan 220 240 V 50 Hz Fan Propeller 491 Bushing Bushing C
19. In case of leftward piping and rear leftward piping bind the auxiliary pipes two only with facing tape e After scribing slits of the body right by a knife or a making off pin cut them by a pair of nippers or the like Slit Body right Indoor unit Fig 8 4 11 CHR O pipas Connecting cable lt Left hand connection with piping gt lt Drain hose Bend the connecting pipe so that it is laid within 43 mm I stallation plate above the wall surface If the connecting pipe is laid exceeding 43 mm above the wall surface the indoor unit may unstably be set on the wall When bending the connecting pipe make sure to use a spring bender so as not to crush the pipe Carefully arrange pipes so that any pipe does not Stick out of the rear plate of the indoor unit Carefully connect the auxiliary pipes and connecting pipes to each other and cut off the insulating tape wound on the connecting pipe to avoid double taping at the joint moreover seal the joint with the vinyl tape etc Since dewing results in a machine trouble make sure to insulate both the connecting pipes Use polyethylene foam as insulating material When bending a pipe carefully do it not to crush N it J Bend the connection pipe within a radius of 30 mm 31 8 4 6 Indoor unit fixing 1 Pass the pipe through the hole in the wall and hook the indoor unit on the installation plate at the upper hooks
20. No other equipment should be connected to this power line For detailed installation acceptance please contact your power supplier whether its restriction does apply for products like washing machines air conditioners or electrical ovens For power details of the air conditioner refer to the rating plate of the product 24 8 2 Installation Diagram of Indoor and Outdoor Units 65 mm or more V plate 7 e Zeolite filter a AOR Filter frame Pan head wood screw With the remote control cover open load the batteries supplied correctly observing their polarity Remote control holder remote control K Wireless remote control Vinyl tape Apply after carrying out a drainage test Extension El Saddle p drain hose 5 Ej Option u lt Extension RB 821SW E drain hose A lt E H Option AS 8 RB 821SW v Electric if xc D parts S Electric JQ E cover 3 parts cover F EE 129 zum S 09 IK amp 19 F IN 0r mam E x V 18 Em 18 55 Loop the connective cable about 100 mm in diameter and 300 350 mm long 25 1 Installation FILE NO SVM 04054 For the rear left and left piping Insert the cushion between the indoor unit and wall and lift the indoor unit for better operation Cut the piping hol
21. board 9 8 1 How to check indoor P C board Cautions for handling P C board 2 1 When removing the front panel and the P C board be sure to turn off the power supply 2 When removing the P C board hold the edge of the P C board and do not apply force to the parts 3 When connecting or disconnecting the connectors on the P C board hold the housing Do not pull at lead wires Check the defects of the P C board with Table 9 8 1 Table 9 8 1 Inspection procedure No Procedure Check points Causes Turn off the power supply and remove the P C board assembly from electric parts base Remove the connecting cables from the terminal block Remove the connector of the motor and turn on the power supply If OPERATION lamp blinks once per second it is not neccessary to check steps 1 to 3 in the right next column Press START STOP button once to start the unit Do not set the mode to Fan Only or On Timer operation Shorten the line of the restart delay timer and start unit Check whenther or not the fuse 01 is blown Check power supply voltage 1 Between TP2 and TP3 of CN12 2 Between and of C02 DC310 340 V 3 Between C04 and output side of IC09 DC15 V 4 Between 12 V and GND 5 Between 5 V and GND Check power supply voltage Heat pump model 1 Between CN31 and CN23 DC15 60 V Cooling only model gt 1 Between connector of Q33 and
22. breaker DC7V IC ICO1 for once and turn it supplied to ower suppl secondary on again after secondary P or fan motor side of removing motor side of is defective transfer transfer 46 Microcomputer is defective 1 Replace main P C board Replace motor FILE NO SVM 04054 9 6 2 Only indoor fan motor does not operate Primary check gt 1 Is it possible to detect the power supply voltage 200 240 V between 1 and 2 on the terminal block 2 Does the indoor fan motor operate in cooling operation In heating operation the indoor fan motor does not operate for approximately 5 minutes after it is turned on to prevent a cold air from blowing in Turn off power supply once and turn it on again Does Fan motor continue to operate Is it possible to detect DC 1 V or more between 56 and 30 of motor connector CN10 YES Start to operate indoor unit in cooling operation at airflow level LOW Does indoor fan operate YES Is it possible to detect DC 310 340 V between 16 and of motor connector CN10 YES Turn off indoor unit and Mot ti diti remove connector from Motor connection condition motor Then press Is it possible to detect DC 15 NO TARTISTOR between 4 and of motor 3 STOP button on connector CN10 Change airflow level to High remote c
23. button is set to LOW LOW MED MED or HIGH the motor operates with a constant air flow Compressor Common relay 4 way valve Outdoor fan OPERATION display lamp z C Fig 7 2 2 3 2 When FAN button is set to AUTO the indoor fan 9 42 5 motor operates as shown in Fig 7 2 3 When T Ld FAN button is set to LOW LOW MED or m HIGH the motor operates with a constant air flow 5 41 5 E 1 8 E 40 5 2 Preset 0 a 1 Preset temp 24 C 5 E NOTE 1 The values marked with 1 are calculated and die controlled by the difference in motor speed between M and L NOTE Fig 7 2 1 Setting of air flow FAN AUTO 1 The values marked with 1 are calculated and controlled by the difference in motor speed 2 ECO operation cannot be set between M and L Fig 7 2 3 Setting of air flow FAN AUTO 16 FILE NO SVM 04054 7 2 3 Dry operation 7 2 4 Heating operation Heat pump model only MODE button on the remote control is set MODE button on the remote control is set to the dry operation to the heating operation 1 The compressor 4 way valve outdoor fan and 1 The compressor 4 way valve outdoor fan and operation display lamp are controlled as shown in operation display lamp are controlled as shown in Fig 7 2 4 Fig 7 2 6 C LL LLL L ZL 3 9
24. room temperature is small the air conditioner operates at normal airflow level FAN speed One of 5 levels The air conditioner operates at normal airflow level Heating operation Heat pump model only e The preset temperature increases 2 C The value of the preset temperature on the remote control does not change e The indoor unit operates in normal heating mode except the preset temperature is higher 2 The POWER mode can not be set in Dry or Fan only operation FILE NO SVM 04054 7 4 High Temperature Limit Control Heat pump model only The microcontroller detects the indoor heat exchanger temperature to prevent pressure of a refrigerating cycle from increasing excessively The compressor and outdoor fan motor are controlled as shown in Fig 7 4 1 Compressor Outdoor fan Heat exchanger temp OFF OFF C 60 ON OFF 55 ON ON 52 Fig 7 4 1 7 5 Low Temperature Limit Control The microcontroller detects the indoor heat exchanger temperature to prevent the indoor heat exchanger from freezing The compressor and outdoor fan motor are controlled as shown in Fig 7 5 1 Heat exchanger temperature Compressor Outdoor fan Less than 2 C continues for 5 minutes OFF Fig 7 5 1 7 6 Defrost Operation Heat pump model only When the indoor unit is in heating operation if the refrigerant evaporation temperature detected by the outdoor heat exchanger
25. sensor is under the specified temperature the outdoor unit starts the defrosting operation At this time the 4 way valve relay and the outdoor fan motor are turned off The indoor fan motor is also turned off by the cold draft preventing control of the indoor microcomputer Then PRE DEF lamp on the indoor unit comes on The defrosting operation stops and the 4 way valve relay outdoor fan motor and the indoor fan motor are turned on automatically when the refrigerant evaporation increases to the specified temperature or when the defrosting time is over 12 minutes 19 FILE NO SVM 04054 7 7 Auto Restart Function 7 7 1 How to set auto restart function The indoor unit is equipped with an automatic To set the auto restart function proceed as follows restarting function which allows the unit to restart The power supply to the unit must be on the function operating with the set operating conditions in the event _ will not set if the power is off of power supply being accidentally shut down The Push the TEMPORARY button located in the center operation will resume without warning three minutes of the front panel continuously for three seconds after power is restored The unit receives the signal and beeps three times This function is not set to work when shipped from the unit then restarts operating automatically in the factory Therefore it is necessary to set it to work event of power supply being accidentally shut down
26. stop manually by press START STOP botton of the remote control one more time 7 9 1 How to cancel Self Cleaning function To cancel the Self Cleaning function proceed as follows e Press TEMPORARY button one time or use remote control to turn on air conditioner The OPERATION display will show in orange color When AUTO RESTART is ON or green color When AUTO RESTART is OFF e Hold down the TEMPORARY button for more than 20 seconds The air conditioner will stop suddenly when the TEMPORARY is pressed but keep holding it continue Then will beep 3 times in the first 3 seconds but it is not related to Self Cleaning function e After holding about 20 seconds the air conditioner will beep 5 times without any blinking of display e The Self Cleaning Operation had been cancelled Remarks e Per setting of Self Cleaning function above AUTO RESTART function had been cancelled To set AUTO RESTART again please follow item 7 7 1 7 9 2 How to set Self Cleaning function To set the Self Cleaning function proceed as follows e Press TEMPORARY button one time or use remote control to turn on air conditioner The OPERATION display will show in orange color When AUTO RESTART is ON or green color When AUTO RESTART is OFF Hold down the TEMPORARY button for more than 20 seconds The air conditioner will stop suddenly when the TEMPORARY is pressed but keep holding it continue Then will beep 3 times is the first 3 seconds but it is no
27. the front panel Remove 4 screws 2 Remove the cover of the fan motor lead wires 3 Check DC voltage with CN10 connector while the fan motor is rotating NOTE Do not disconnect the connector while the fan motor is rotating Useathin test rod Indoor fan starts rotating when power supply is turned on Check output DC voltage of fan motor on P C board Pa iss P C board 6 Blue Measure voltage between 2 GND BLACK 5 Yellow and 3 V line YELLOW of motor connector CN10 while indoor fan motor is rotating 4 White 3 Black 2 1 Red DC 1 0 V or more Under DC 1 0 V P C board is defective Motor is defective Replace P C board Replace motor 48 FILE NO SVM 04054 9 6 4 Compressor does not operate Primary check 1 Is the preset temperature higher than the room temperature in cooling operation 2 Is the crossover cable connected properly Inspection procedure gt Cooling only model Turn on power supply Does OPERATION lamp blink Refer to 9 6 1 Power can not be turned on Thermo sensor or heat exchanger sensor is defective Is resistance value of thermo sensor TA and heat exchanger sensor TC normal Does miniature relay RY04 switch on and off due to temperature changes Replace thermo sensor or heat exchanger sensor Replace P C board Rewire or replace defective cords Compressor is defecti
28. to the motor and turn on the power supply Start the unit in the following condition Set the operation mode to FAN Set the fan speed level to HIGH The unit compressor operates continuously in the above codition No Procedure Check points 1 Check whether or not the compressor operates 2 Check whether or not the OPERATION lamp blinks Check whether or not the compressor operates Check whether or not the OPERATION lamp blinks Check it is impossible to detect the voltage DC 15 V between 8 and 4 of the motor terminals The motor does not operate But it is possible to receive the signal from the remote control The motor rotates but vibrates strongly FILE NO SVM 04054 Causes The temperature of the indoor heat exchanger is extremely low The connection of the heat exchanger sensor is loose The connector is disconnected 01 The heat exchanger sensor and the P C board are defective Refer to Table 9 8 2 The main P C board is defective The temperature of the indoor heat exchanger is extremely high The connector of the heat exchanger sensor short circuited 01 The heat exchanger sensor and the P C board are defective Refer to Table 9 8 2 The main P C board is defective The indoor fan motor is defective Protected operation of P C board The connection of the motor connect
29. 4 2 where there no obstacles such as a curtain that may block the signal from the indoor unit Do not install the remote control in a place exposed to direct sunlight or close to a heating source such as a stove Keep the remote control at least 1 m apart from the nearest TV set or stereo equipment This is necessary to prevent image disturbances or noise interference The location of the remote control should be determined as shown below For installation of the indoor unit use the paper pattern on the back 1 After determining the pipe hole position on the mounting plate gt drill the pipe hole 265 mm at a slight downward slant to the outdoor side NOTE e When drilling a wall that contains a metal lath wire lath or metal plate be sure to use a pipe hole brim ring sold separately Mounting the installation plate Side view H Top view UNS VAL Indoor unit 9 Indoor unit emote Reception control range L Remote control Reception R range Axial distance Fig 8 4 1 9 Pipe hole Hook Thread Hook Installation Pipe hole plate Indoor unit Weight 8 Mounting screw Fig 8 4 3 28 FILE NO SVM 04054 When the installation plate is directly mounted on 8 4 3 Electrical work the walls 1 The supply voltage must be the same as the rated 1 Securely fit the installation plate onto the wall by voltag
30. 5 mm dia holes in the wall Insert clip anchors for appropriate mounting screws NOTE Secure four corners and lower parts of the installation plate with 6 to 8 mounting screws to install it 29 FILE NO SVM 04054 8 4 4 Wiring connection CAUTION idc s Be sure to refer to the wiring system diagram labeled inside the front panel e Check local electrical cords and also any specific wiring instructions or limitations Front panel Connecting cable DA Terminal block Fig 8 4 6 Cord clam Earth Stripping length of connecting cable H line P Terminal cover Screw 10 Earth line Connecting cable Fig 8 4 7 Fig 8 4 5 NOTE Use stranded wire only How to connect the connecting cable Wire type More than 1 5 mm HO7RN F or Wiring of the connecting cable can be carried out 245 IEC66 or 1 3 mm AWG 16 without removing of the front panel 1 Remove the air inlet grille Open the air inlet grille upward and pull it toward you 2 Remove the terminal cover and cord clamp 3 Insert the connecting cable according to local cords into pipe hole on the wall 4 Take out the connecting cable through the cable slot on the rear panel so that it protrudes about 15 cm from the front 5 Insert the connecting cable fully into the terminal Fig 8 4 8 block and secure it tightly with screws 6 Tightening torque 1
31. 7539 For stud bolt 26 2 5 or stud bo E 450 u S For stud bolt 8 210 R 20 20 For stu ES Ve o o 2 4 Outline of indoor unit 1 A 5 T EE iH T To mi n 1 pene Et PM 8 poe IL Pm Le r1 gi Fs i aq I V n P I Y CO MET Oma 0 0 eg Installation Plate outline FILE NO SVM 04054 2 2 Outdoor Unit RAS 24UAH E3 1 v9 alpueH ZT youd ove Hog auas 88 L opis sey 66 9 epis pinbr cl 19400 SU yoq Jououe 0 SOUT 7 10 009 10 001 c 9JouJ 10 009 Z 009 uoisueuuip uonejeisu e 04 10 001 Ove 9 pueH 555 NN NY 069 V8IHSO L jououe org 8 10J s lou 8 21 2 009 076 6649 BOY 81Xe L Y N N 1 8759 076 06 fen A Buiweiq lleled 9 19 INO 92 O FILE NO SVM 04054 2 3 Outdoor Unit RAS 18UAH E3 1 2 0 eel Opis sey lt 90 epis pinbr 19A00 SUR 21449913 104 Joyoue OLD BS 10
32. 8 4 16 Arrange the drain pipe for proper drainage from the unit Improper drainage can result in dew dropping This air conditioner has the structure designed to drain water collected from dew which forms on the back of the indoor unit to the drain pan Therefore do not store the power cord and other parts at a height above the drain guide Wall Drain guide Space for pipes 4 Fig 8 4 17 32 8 5 Outdoor Unit 8 5 1 Installation place A place which provides the spaces around the outdoor unit as shown in the left diagram A place which can bear the weight of the outdoor unit and does not allow an increase in noise level and vibration e A place where the operation noise and discharged air do not disturb your neighbors A place which is not exposed to a strong wind A place free of a leakage of combustible gases A place which does not block a passage When the outdoor unit is to be installed in an elevated position be sure to secure its feet e Anallowable length of the connecting pipe is up 15 m Refer to the table of TO CHARGE REFRIGERANT for detail e Anallowable height level is up to 8 m RAS 18UA or 10 m RAS 24UA A place where the drain water does not raise any problem CAUTION 1 Install the outdoor unit without anything blocking the air discharging 2 When the outdoor unit is installed in a place exposed always to a strong wind like a coast or on a high stor
33. 8 5 5 manifold 6 Open fully the valve stem of the packed valves 4 CAUTION UN both side of Gas and Liquid 7 Remove the charging hose from the service port KEEP IMPORTANT 4 POINTS FOR PIPING WORK 8 Securely tighten the caps on the packed valves 1 Take away dust and moisture Inside of the con necting pipes Compound pressure gauge Pressure gauge 2 Tight connection between pipes and unit 3 Evacuate the air in the connecting pipes using VACUUM PUMP 4 Check gas leak connected points W Handle Lo FO PF m Charge hose Charge hose Connecting pipe Vacuum pump adapter for counter flow prevention Service port Valve core Setting pin Packed valve at liquid side Fig 8 5 6 34 TO CHARGE REFRIGERANT Refrigerant RAS 24UKHP E3 RAS 24UAH E3 1 RAS 18UKHP E3 RAS 18UAH E3 1 No need to charge extra refrigerant 15 less 15 less Need to charge extra refrigerant Over 15 m up to 25 m 30 g m Over 15 m up to 20 m 20 g m Packed valve handling precautions e Open the valve stem all the way out but do not try to open it beyond the stopper Securely tighten the valve stem cap with torque in the following table Gas side Tightening torque A Gas side 215 88 mm 65 to 80 N m 6 5 to 8 0 kgf m 5 mm Gas side 212 70 mm 60 to 62 N m 6 0 to 6 2 kgf m 4 mm Liquid
34. 886 1 979 Fan motor for outdoor KFG6 71SB5P T1 Output Rated 65 W 6 poles 1 phase 220 240 V 50 Hz at 20 C Winding resistance Q Red Black White Black 64 4 127 4 Running capacitor 451355KQ AC 450 V 3 5uF for fan motor Running capacitor for compressor DS441606CPNE AC 440 V 60uF Solenoid coil for 4 way valve VENTE AC 220 240 V TE TD CLK 35J A35 Transformer TT 05 Microcontroller TMP47C840N Varistor R73 R74 R86 15G471K 470 V Fuse F01 T6 3 250 V 10 at 25 C 50 at 25 C 220 240 V 50 Hz 220 240 V Thermo sensor Magnetic contactor 10 Parts name Compressor 4 3 Outdoor Unit RAS 18UAH E3 1 2JS350D5DA02 FILE NO SVM 04054 Specifications Output Rated 1500 W 2 poles 1 phase 220 240 V 50 Hz Winding resistance at 20 C C R 5 0 981 2 845 Fan motor for outdoor KFG6 71SB5P T3 Output Rated 65 W 6 poles 1 phase 220 240 V 50 Hz Winding resistance at 20 C Red Black White Black 64 4 127 4 Running capacitor for fan motor 451205KQ AC 450 V 2uF Running capacitor for compressor 371456JCR 370 V 45uF Solenoid coil for 4 way valve VHV STF AC 220 240 V Thermo sensor TE TD 10 at 25 C 50 at 25 C Magnetic cont
35. ARISTOR YU DSA f K n T6 3A 250 V sr 101 DBO1 25 OO 01 1 FUSE L Taui e S R21 151 o LI 91 Em 8 E AA ot oDCOV sl BLK DC7V WHI CN30 1 RED I BEY MAIN P C BOARD MCC 821 006 602 IC E IC01 I 1 CNO3 CNO DA S GRN amp YEL oo o CN23 a I THERMO mia HEAT 4 Papen ae A S SENSOR EXCHANGER i To a 576177 Oa SENSOR I INFRARED RAYS RECEIVE 4 3 TC i AND INDICATION PARTS INDOOR 4 2 TERMINAL T INDOOR BLOCK i UNIT MAIN P C BOARD MCC 890 a a RR M k TRANSFORMER i OUTDOOR BUT POWER SUPPLY i i UNIT 22 CN06 DISCHARGE 220 240V 50Hz SENSOR TD j i RED hy BLU OUTDOOR 0505 TERMINAL R N a 3 TN BLOCK TERRIER CORE GRN amp YEL 8001 BLK 1725 i OG let INJ i BLK py eo 1 4 GRN amp YEL j 250VAC 6 TNR BLK i GG R73 2 REDA CN01 CX CHASSIS j HEAT BLK RED 5 5 EXCHANGER SENSOR TE 1 1 RY07 MAGNETIC
36. FILE SVM 04054 1 TOSHIBA SERVICE MANUAL AIR CONDITIONER SPLIT WALL TYPE RAS 24UKHP E3 RAS 24UAH E3 1 RAS 18UKHP E3 RAS 18UAH E3 1 24 Class Revised March 2005 18 Class CONTENTS SPECIFICATIONS CONSTRUCTION VIEWS 2 1 Indoor Unit 2 2 Outdoor Unit RAS 24UAH E3 1 2 3 Outdoor Unit RAS 18UAH E3 1 WIRING DIAGRAM 3 1 RAS 24UKHP E3 RAS 24UAH E3 1 3 2 RAS 18UKHP E3 RAS 18UAH E3 1 SPECIFICATION OF ELECTRICAL PARTS 4 1 Indoor Unit 4 2 Outdoor Unit RAS 24UAH E3 1 4 3 Outdoor Unit RAS 18UAH E3 1 REFRIGERATION CYCLE DIAGRAM 5 1 RAS 24UKHP E3 RAS 24UAH E3 1 5 2 RAS 18UKHP E3 RAS 18UAH E3 1 CONTROL BLOCK DIAGRAM OPERATION DESCRIPTION 7 1 Outline of Air Conditioner Control 7 2 Description of Operation Circuit 7 3 Hi POWER Mode 7 4 High Temperature Limit Control 7 5 Low Temperature Limit Control 7 6 Defrosting Operation 7 7 Auto Restart Function 7 8 Filter Check Lamp 7 9 Self Cleaning function INSTALLATION PROCEDURE 8 1 Safety Cautions 8 2 Installation Diagram of Indoor and Outdoor Units 8 3 Installation 8 4 Indoor Unit 8 5 Outdoor Unit 8 6 How to Set Remote Control Selector Switch 8 7 Others FILE NO SVM 04054 10 11 FILE NO SVM 04054 TROUBLESHOOTING CHART 9 1 Troubleshooting Procedure 9 2 Basic Check Items 9 3 Primary Judgement 9 4 Self Diagnosis by Remote Control Check Code 9 5 How to Diagnose F
37. Ge Preset 0 R co E temp 0 zu sit u bed 2 0 5 Preset 0 temp g E 8 E Compressor g Tl Common relay 4 way valve Outdoor fan OPERATION display lamp OPERATION display lamp Compressor Common relay 4 way valve Outdoor fan Fig 7 2 4 Fig 7 2 6 2 The microprocessor turns the compressor on and 2 When FAN button is set to AUTO the indoor fan off at the regular intervals 4 to 6 minutes While motor operates as shown in Fig 7 2 7 When the compressor is turning off the indoor fan motor FAN button is set to LOW LOW MED MED or operates in the SUPER LOW position HIGH the motor operates with a constant air flow The pattern of operation depending on the relation between room temperature and preset temperatures is shown in Fig 7 2 5 Preset 0 L temp 0 5 Fe 1 F Room temp di 5 57 2 Preset temp 1 Preset temp M 5 0 g 5 5 ompressor AUTO H Outdoor fan c 1 2 The values marked with 1 and 2 are Indoor fan L calculated and controlled by the difference in Super Low motor speed between M andL Fig 7 2 5 Fig 7 2 7 Setting of air flow FAN AUTO 3 FAN button on the remote control is set to AUTO only 4 The ECO and Hi Power operations can not be set 17 3 The indoor heat exchanger restricts revolving speed of the fan motor to
38. IBA dealer immediately Exposure of unit to water or other moisture before installation could result in electric shock Do not store it in a wet basement or expose to rain or water After unpacking the unit examine it carefully for possible damage Do not install in a place that can increase the vibration of the unit Do not install in a place that can amplify the noise level of the unit or where noise and discharged air might disturb neighbors To avoid personal injury be careful when handling parts with sharp edges Please read this installation manual carefully before installing the unit It contains further important instruc tions for proper installation 22 FILE NO SVM 04054 REQUIREMENT OF REPORT TO THE LOCAL POWER SUPPLIER Please make absolutely sure that the installation of this appliance is reported to the local power supplier before installation If you experience any problems or if the installation is not accepted by the supplier the service agency will take adequate countermeasures Remark per EMC Directive 89 336 EEC For Europe model only To prevent flicker impressions during the start of the compressor technical process following installation conditions do apply The power connection for the air conditioner has to be done at the main power distribution This distribution has to be of an impedance Normally the required impedance is reached at a 32A fusing point Air conditioner fuse has to be 16A max
39. M I I I I dm 208 Back body Front panel 998 Grille inlet N S LO CO N ay 151 Knock out system Knock out system 50 V FR 0 ws P H li 8 h F GE EE E Sis a l Jodi Connection pipe 0 39 m Drain hose 0 54 m 57 118 For 24 series Flare 215 88 eres 0 49 wireless remote control For 18 series Flare 212 7 Flare 26 35 998 r
40. P C Board Transformer Location No 43T60002 43T50004 43T69005 43T69066 FILE NO SVM 04054 11 EXPLODED VIEWS AND PARTS LIST 11 1 Indoor Unit E Parts Assy Description Terminal Block 3P Sensor Heat Exchanger Sensor Thermostat P C Board Assy WRS LED MCC 819 Location No 62 43 69375 43 69377 43 62003 Description P C Board ASSY For RAS 24UKHP E3 P C Board Assy For RAS 18UKHP E3 Clamp Cord 11 2 Indoor Unit Location No 43T00048 43T00049 43T80306 43T80304 43T80003 43T01004 43 03010 43 03011 43 03012 43 09317 43 70301 43 21302 43 44310 43 44311 43 47311 43 47016 43 47316 43 49010 43 19003 43 49009 43 49036 220 219 213 Location Description Front Panel ASSY Grille ASSY Air Filter L Air Filter R Filter Frame Mark Body Right Body Left Hide Claw Louver H Hose ASSY Drain Motor Stepping Refrigeration Cycle ASSY For 24 Series Refrigeration Cycle ASSY For 18 Series Pipe Deliver Pipe Suction For 18 Series Pipe Suction For 24 Series Pipe Shield Holder Sensor Spring Plate EVA Seal 63 No 43749039 43749038 43749037 43779007 43739016 43760075 43721327 43720014 43722002 43739015 43703013 43707022 43782007 43785410 43785411 43785412 43785413 43769309 43783003 43762029 FILE NO SVM 04054 Description
41. Swing the indoor unit to right and left to confirm that it is firmly hooked up on the installation plate While pressing the indoor unit onto the wall hook it at the lower part on the installation plate Pull the indoor unit toward you to confirm that it is firmly hooked up on the installation plate KE Hook here D Installation B plate Press Hook unhook Fig 8 4 13 For detaching the indoor unit from the installation plate pull the indoor unit toward you while pushing its bottom up at the specified parts Push Push Fig 8 4 14 FILE NO SVM 04054 8 4 7 Drainage 1 Run the drain hose sloped downwards NOTE Hole should be made at a slight downward slant on the outdoor side Do not form the drain hose into a wavy shape Do not rise the drain hose 50 mm somm AX x gt x x VE b P 8 EST Do not put Do not put the drain the drain hose end hose end in into water the drainage ditch Fig 8 4 15 Put water in the drain pan and make sure that the water is drained out of doors When connecting extension drain hose insulate the connecting part of extension drain hose with shield pipe IE Extension drain hose Shield pipe N Drain hose Inside the room Fig
42. TION DO NOT INSTALL NEAR CONCENTRATIONS OF COMBUSTIBLE GAS OR GAS VAPORS FAILURE TO FOLLOW THIS INSTRUCTION CAN RESULT IN FIRE OR EXPLOSION TO PREVENT OVERHEATING THE INDOOR UNIT AND CAUSING A FIRE HAZARD PLACE THE UNIT WELL AWAY MORE THAN 2 M FROM HEAT SOURCES SUCH AS RADIATORS HEATORS FURNACE STOVES ETC WHEN MOVING THE AIR CONDITIONER FOR INSTALLING IT IN ANOTHER PLACE AGAIN BE VERY CAREFUL NOT TO GET THE SPECIFIED REFRIGERANT R410A WITH ANY OTHER GASEOUS BODY INTO THE REFRIGERATION CYCLE IF AIR OR ANY OTHER GAS IS MIXED IN THE REFRIGERANT THE GAS PRESSURE IN THE REFRIGERATION CYCLE BECOMES ABNORMALLY HIGH AND IT RESULTINGLY CAUSES BURST OF THE PIPE AND INJURIES ON PERSONS IN THE EVENT THAT THE REFRIGERANT GAS LEAKS OUT OF THE PIPE DURING THE INSTALLATION WORK IMMEDIATELY LET FRESH AIR INTO THE ROOM IF THE REFRIGERANT GAS IS HEATED BY FIRE OR SOMETHING ELSE IT CAUSES GENERATION OF POISONOUS GAS WARNING Never modify this unit by removing any of the safety guards or bypassing any of the safety interlock switches Do not install in a place which cannot bear the weight of the unit Personal injury and property damage can result if the unit falls Before doing the electrical work attach an approved plug to the power supply cord Also make sure the equipment is properly earthed Appliance shall be installed in accordance with national wiring regulations If you detect any damage do not install the unit Contact your TOSH
43. TION lamp and TIMER lamp will blink 5 Hz 9 2 3 Program control The microcontroller operates as shown in Table 9 2 1 to control the air conditioner If there are any opera Operation of air conditioner When the main power supply is turned on the OPERATION lamp on the indoor unit blinks tional problems check whether or not the problems correspond to Table 9 2 1 If they correspond to the Table they are not problems with the air conditioner but they are indispensable operations to control and maintain the air conditioner properly Table 9 2 1 Descriptions The OPERATION lamp blinks to indicate that power is turned on If the START STOP button is pressed the lamp stops blinking The indoor fan motor speed does not change in the Dry operation The indoor fan motor speed is automatically controlled in the Dry operation The compressor is not turned off even though the room temperature is in the range that the compressor is turned off The compressor has a function that it is not turned off for 3 minutes after it is turned on even though the room temperature is in the range that the compressor is turned off The compressor is not turned on and off even though the thermo control is operated in the Dry operation In the Dry operation the compressor is turned on and off automatically at the regular intervals independent of the thermo control The PRE DEF lamp is indicated when the Heating operation s
44. actor CLK 26J 220 240 V 50 2 Transformer TT 05 220 240 V Microcontroller TMP47C840N Varistor R73 R74 R86 15G471K 470 V Fuse 01 MT3 T6 3 A 250 V 11 FILE NO SVM 04054 5 REFRIGERATION CYCLE DIAGRAM 5 1 RAS 24UKHP E3 RAS 24UAH E3 1 T Indoorunit __ Evaporator 1 Cooling f c 1 0 39 m S 5 049m 9 Connecting pipe Connecting pipe lt Crosstown C gt x O D 15 88 O D 6 35 mm Packed valve Packed valve 215 88 26 35 a gt Gas container connection Reinstall etc Heating Cooling 4 way valve Cooling Compressor 2JS386D5BB02 i capi ture Accumulator Capillary tube 2 4x1000 3 Condenser Refrigerant l Propeller fan R22 1 75 kg J gt Cooling Outdoor unit Mark means check points of Gas Leak Heating Ambient temp Standard Surface temp of heat Fan speed conditions DB WB pressure P exchanger interchanging indoor C MPaG ipe T C pip C Indoor Outdoor Standard 0 4 43 0 High 20 7 6 Heating High temperature 0 5 0 7 52 0 59 0 Low 27 24 18 Low temperature 1 0 3 36 0 High 20 10 10 Standard 0 4 11 0 High 27 19 35 24 Cooling High temperature 0 5 12 0 High 32
45. atus and judging of the information or indication of error Role of outdoor unit controller The outdoor unit controller receives the operation commands from the indoor controller and executes them Compressor operation control e Operation control of outdoor fan motor e Turning off the compressor and outdoor fan when the outdoor unit receives the shutdown command Defrost control in heating operation Temperature measurement by the outdoor heat exchanger and control for the four way valve and the outdoor fan motor Heat pump Model only Operations according to the commands from the indoor unit 7 1 1 Louver control 1 Vertical air flow louver Position of veritcal air flow louver is automatically controlled according to the operation mode Besides position of vertical air flow louver can be arbitrarily set by pressing FIX button The louver position which is set by FIX button is stored in the microcomputer and the louver is automatically set at the stored position for the next operation 2 Swing If SWING button is pressed when the indoor unit is in operation the vertical air flow louver starts swinging When FIX button is pressed it stops swinging 7 1 2 Indoor fan control DC Fan motor 1 The indoor fan is operated by the stepless speed change DC motor 2 For air flow level speed of the indoor fan motor is controlled in five steps LOW LOW MED MED and HIGH If AUTO mode is selected
46. aulty Part 9 6 Troubleshooting for Indoor Unit 9 7 Troubleshooting for Wiring Interconnect cable and Serial Signal Wire 9 8 Troubleshooting for P C Board 9 9 Troubleshooting for Remote Control PARTS REPLACEMENT 10 1 Indoor Unit 10 2 Outdoor Unit RAS 24UAH E3 1 10 3 Outdoor Unit RAS 18UAH E3 1 EXPLODED VIEWS AND PARTS LIST 11 1 Indoor Unit E Parts Assy 11 2 Indoor Unit 11 3 Outdoor Unit RAS 24UAH E3 1 11 4 Outdoor Unit RAS 18UAH E3 1 Capacity 1 SPECIFICATIONS RAS 24UKHP E3 RAS 24UAH E3 1 FILE NO SVM 04054 RAS 18UKHP E3 RAS 18UAH E3 1 Cooling Heating Cooling Heating 10 Power source V 220 240 2 50 Power consumption W 2490 1920 Power factor 90 95 Running current A Indoor Outdoor Starting current A 60 40 Moisture removal lit h 2 5 2 Indoor H M L dB 45 41 37 42 39 35 Noise Outdoor 220 240V dB Name of refrigerant Refrigerant Rated amount kg Refrigerant control Capillary tube Gas side size Connection type Flare connection Liquid side size Interconnection Connection type 26 35 Flare connection pipe Maximum length One way 15 Maximum height difference INDOOR UNIT RAS 24UKHP E3 RAS 18UKHP E3 298 Dimensions 998 208 Net weight 12
47. cting cable OPERATION TIMER and PRE DEF or FAN ONLY for cooling only model lamps are blinking Cycle failure e Gas shortage or other refrigerant cycle trouble Heat exchanger sensor open break or short e Overload relay or thermostat trouble of compressor Table 9 3 2 Diagnosis by detective operation Symptom The remote control does not work then turn it on Try to operate the remote control Turn off the power supply once Primary judgement The remote control still does not work The indoor unit and or remote control is are defective The remote control OK works The outdoor fan does not rotate The compressor operates The outdoor unit Outdoor fan motor is defective The compressor does not operate An internal part of the compressor or P C board is defective 39 9 4 Self Diagnosis by Remote Control 1 If the lamps are indicated as shown B to G in Table 2 Check Code 9 3 1 exchanger the self diagnosis by the remote control When the remote control is set to the service mode the indoor controller diagnoses the operation condition and indicate the information of the self diagnosis on the display of the remote control with the check codes If a fault is detected all lamps on the indoor unit will blink at 5 Hz and it will beep for 10 seconds Pi Pi Pi The timer lamp usually blinks 5 Hz during the self diagnosi
48. ctive Replace P C board Od Indoor TC sensor error Is CNO5 TC sensor connector Re nee connected properly properly Is TC sensor resistance value Replace T sens r 10 KQ at 25 C normal Indoor P C board is defective Replace P C board 18 outdoor TE sensor error Heat pump model Is TE sensor connector Connect connector connected properly properly YES Is TE sensor resistance value E ee 10 at 25 C normal p Indoor P C board is defective Replace P C board 44 FILE NO SVM 04054 19 outdoor TD sensor error Heat pump model Is TD sensor Connect connector connected properly properly YES Is TD sensor resistance value Repl TD 50 at 25 C normal eplace sensor Outdoor P C board is defective Replace board 1E Discharge temp error Heat pump model 5 Is protective controller such as discharge thermostat normal Are wires connected NO Connect wires to to connector properly connector properly Is charged amount Check and modify charged of refrigerant normal amount of refrigerant YES Is overload relay normal Unit operates normally NO Is TD sensor resistance value 50 at 25 C normal Replace TD sensor Outdoor P C board is defective Replace P C board 45 FILE NO SVM 04054 9 6 Troubleshooting for Indoor unit 9 6 1 Power can not be turned on The unit does not op
49. e when error is EEPROM access error defected IOL operation All off The lamp on the Overload operation of refrigerating cycle J indoor unit blinks zx when error is defected F1 I Cable Vit The serial signals can not be Operation The lamp on the 1 In the case of the outdoor unit not J connection HW transmitted and received between continues indoor unit blinks operating at all indoor and outdoor units when error is Check the crossover cable and The crossover wire is defected connect it properly connected wrongly Check the outdoor P C board The serial signal transmitting 2 In the case of the outdoor unit operating circuit on the outdoor P C board is defective The serial signal receiving circuit on the indoor P C board is defective normally Check whether or not both of serial LED Green and serial LED Orange is blinking If the serial LED Green is not blinking check the outdoor P C board If the serial LED Orange is not blinking check the indoor board Viu The operation command signals Operation The lamp on the If the operation command signals continue LI 21 are not transmitted from the continues indoor unit blinks to be transmitted between 2 and 9 of the indoor unit to the outdoor unit when error is indoor terminal block replace the outdoor defected And it P C board returns to the normal condition when recovering from errors 7 Outdo
50. e of the air conditioner screwing it in the upper and lower parts to hookup 2 Prepare the power source for exclusive use with the the indoor unit air conditioner 2 To mount the installation plate on a concrete wall with anchor bolts utilize the anchor bolt holes as NOTE illustrated in the above figure e Wire type More than 1 5 mm HO7RN F or 3 Install the installation plate horizontally in the wall 245 IEC66 or 1 3 mm AWG 16 gt CAUTION CAUTION When installing the installation plate with a This appliance be connected to the mains in mounting screw do not use the anchor bolt hole the following way Otherwise the unit may fall down and result in Connection to fixed wiring personal injury and property damage A switch or circuit breaker which disconnects all poles and has a contact separation of at least Installation plate 3 mm must be incorporate in the fixed wiring An Keep horizontal direction L I IL J mei som lt eum C approved circuit breaker or switches must used E x O LIT e Perform wiring works so as to allow a generous wiring capacity Projection 5 mm dia hole 15 mm or less Mounting A screw 04 x 25 M Clip anchor local parts Fig 8 4 4 Failure to firmly install the unit may result in personal injury and property damage if the unit falls In case of block brick concrete or similar type walls make
51. e sloped slightly Make sure to run the drain hose sloped downward The auxiliary piping can be connected the left rear left rear right or bottom Insulate the refrigerant pipes separately with insulation not together Loop the connective cable about 100 mm in diameter and 300 350 mm long FILE NO SVM 04054 8 3 Installation 8 3 1 Optional installation parts Part Code Parts name Q ty Refrigerant piping Liquid side 26 35 mm One Gas side 212 70 mm 18 series each 15 88 mm 24 series Pipe insulating material 1 polyethylene foam 6 mm thick One Putty PVC tapes Sach lt Fixing bolt arrangement of outdoor unit gt RAS 24UAH E3 1 600 mm Air inlet 340 mm Air outlet Drain outlet Fig 8 3 1 RAS 18UAH E3 1 600 mm Air inlet 120 mm l Air outlet Fig 8 3 2 Secure the outdoor unit with fixing bolts and nuts if the unit is likely to be exposed to a strong wind e Use 28 mm or 210 mm anchor bolts and nuts e If it is necessary to drain the defrost water attach drain nipple 10 to the bottom plate of the outdoor unit before installing it 26 8 3 2 Accessory and installation parts FILE NO SVM 04054 he Part name Q ty us Part name Q ty Wu Part name Q ty Pel o ZA Installation plate x 1 Remote control holder x 1 Bioenzyme fi
52. efective cords Replace compressor RS 2 Is compressor motor winding normal V NO Compressor is defective Check winding resistor YES 2 PEUT Is capacitor for compressor normal Capacitor is defective YES NO Is overload relay normal Overload relay is defective YES NO 7 Does compressor start Compressor is defective YES Does compressor stop after a while YES Is gas quantity normal Check gas pressure YES Compressor is defective YES Replace compressor Replace capacitor Replace overload relay Replace compressor Gas shortage Gas leak Supply gas 52 FILE NO SVM 04054 9 7 Troubleshooting for Wiring Interconnect cable and Serial Signal Wire 9 7 1 Outdoor unit does not operate Inspection procedure 1 Is the voltage between 1 and 2 of the indoor terminal block varied 2 Are signals from the indoor unit to the outdoor unit transmitted correctly based upon the following diagram NOTE Measure the voltage for 2 minutes and 30 seconds after starting the unit Prepare a diode for checking Heatpump model _ M Tester Terminal block on indoor side Red White Terminal block Normal condition Voltage varied between AC70 100V Abnormal condition Voltage does not vary Cooling model Terminal block on indoor side Tester Red White Terminal block Fig 9 7 1 Normal condition After start operated about 2 minutes and 30 seco
53. erate at all Primary check gt 1 Is the supply voltage normal 2 Is the connection to the AC output OK 3 Are the connection of the primary side and the secondary side of the power transformer inserted into the P C board 4 Is the fuse F01 blown Operation Check item Conceivable principle cause Measure Turn off power supply once and 5 second later turn it on again NO Is OPERATION lamp blinking YES Item by symptoms Does transmission mark on remote control Is it possible to turn on power supply by pressing START STOP button on remote control YES flash normally and is its signal transmitted properly YES Remote control is defective Refer to 9 9 Troubleshooting for Remote Control Parts R21 Does the Is fuse 01 R22 5601 fan motor of indoor YES C15 C01 DBO1 connector control board 2 ICO1 between blown and TO1 and 2 Unit operates are defective short circuit normally Is DC 310 340 V supplied to primary side of transfer Switch Are DC 15 V Switch Is voltage DC 12 V or 5 V indicated on rear of indoor control board normal NO YES Refer to Primary check or this problem is one step short of power P C board block Switch Are DC 15 V DC 12 V and DC 12V or Transfer switch DC7V Turn off
54. fter 3 seconds the electronic beeper 27 Service cap connection makes three short beeps to tell you the Auto Valve stem cap connection Restart has been selected To cancel the Auto Restart follow the steps described in the section Auto Restart Function of the Owner s Manual Fig 8 7 1 e Check the flare nut connections valve stem connections and service port cap connections for gas leak with a leak detector or soap water 8 7 2 Test operation To switch the TEST RUN COOL mode press TEMPORARY button for 10 sec The beeper will make a short beep TEMPORARY button Fig 8 7 2 27 FILE NO SVM 04054 9 TROUBLESHOOTING CHART 9 1 Troubleshooting Procedure Follow the details of 9 2 Basic Check Items If there is no trouble corresponding to 9 2 check whether or not there are faulty parts following 9 4 Self Diagnosis by Remote Control 9 2 Basic Check Items 9 2 1 Power supply voltage The line voltage must be AC 220 240 V If it is not within this range the air conditioner may not operate normally 9 2 2 Incorrect cable connection between Indoor and outdoor units The indoor unit is connected to the outdoor unit with 4 cables Check that the indoor and outdoor units have been properly connected with terminals assigned the same numbers If the connectors are not properly connected the outdoor unit will not operate normally or OPERA
55. ing torque you can perform the air purge together at once 26 35 mm 16 to 18 1 6 to 1 8 kgf m AIR PURGE 212 70 mm 50 to 62 5 0 to 6 2 kgf m Evacuate the air in the connecting pipes and in the 215 88 mm 65 to 80 6 5 to 8 0 kgf m indoor unit using a vacuum pump Do not use the refrigerant in the outdoor unit For details see the e Tightening torque of flare pipe connections manual of the vacuum pump Flare at indoor unit side lt Using a vacuum pump gt Be sure to use a vacuum pump with counter flow prevention function so that inside oil of the pump does not flow backward into pipes of the air conditioner when the pump stops 1 Connect the charge hose from the manifold valve to the service port of the gas side packed valve c 2 Connect the charge hose to the port of vacuum pump Fig 8 5 4 3 Open fully the low pressure side handle of the gauge manifold valve marais D 4 Operate the vacuum pump to start for evacuating Half union Flare nut Perform evacuating for about 15 minutes if the Externally Internally piping length is 20 meters 15 minutes for threaded side gt threaded side 20 meters assuming a pump capacity of 27 liters per minute Then confirm that the compound Use a wrench to secure Use a torque wrench to tighten pressure gauge reading is 101 kPa 76 cmHg 5 Close the low pressure side valve handle of gauge Fig
56. lter x 2 2 5 gt Wireless remote control x 1 Filter frame x 2 Mounting screw 24 x 25 x 8 gt o 8 Pan head wood screw Battery x 2 Zeolite filter x 2 3 1 x 16 x 2 Others Name Owner s manual Installation manual This model is not equipped with an extension drain hose Option Drain nipple X 1 For Heat pump model only The par marked with asterisk is packaged with the outdoor unit For the extension drain hose use an optionally available RB 821SW or commercially available one 27 FILE NO SVM 04054 8 4 Indoor Unit 8 4 2 Cutting a hole and mounting installation plate 8 4 1 Installation place Cutting a hole A place which provides the spaces around the indoor unit as shown in the above diagram When installing the refrigerant pipes from the rear A place where there is no obstacle near the air inlet and outlet o o o e A place that allows easy installation of the piping to the outdoor unit A place which allows the front panel to be opened IDIR Direct sunlight to the indoor units wireless DERE receiver should be avoided The microprocessor in the indoor unit should not be too close to RF noise sources The center of the pipe For details see the owner s manual hole is above 1h arrow x o gt 100mm C o lt Remote control gt Fig 8
57. nds Voltage between 2 and 3 of the of the indoor s Terminal block should be equal AC 220 240V Abnormal condition Don t found voltage AC 220 240V from terminal block OV 9 7 2 Outdoor unit stops a while after starting the unit Confirmation procedure Select one of 3 cases below and follow the procedure 1 The outdoor unit stops between 10 and 20 minutes passed after starting and it takes 10 minutes or more to restart the unit Gas has a low circulation Gas shortage Gas leak Pipe clogging Measure gas pressure Compressor is turned off and on automatically by thermo sensor Heat pump Model or thermostat Cooling only Model 2 The outdoor unit stops once it would not operate until the power is turned on again Refer to 9 6 4 Compressor does not operate 3 The outdoor unit stops between 10 minutes to 1 hour after starting and a check code is indicated on the remote control Check code 03 1E Refer to Table 9 4 1 53 FILE NO SVM 04054 Inspection procedure 1 If the P C board is detective check for disconnec tion burn or discoloration of the copper foil pattern of the P C board The P C board consists of the following 2 parts a Main P C board parts Power relay indoor fan motor drive circuit and control circuit C P U and peripheral circuits buzzer drive circuit and buzzer b Infrared rays parts Infrared rays receiving circuit 9 8 Troubleshooting for P C
58. nel with the procedure 1 2 Remove the screw fixing the electrical part box 3 Remove the drain guide 4 Remove the connector 5P for the fan motor and the connector 6P for the louver motor from the microcomputer assembly 5 Remove the screw for the earth and pull the electrical part base toward you to remove it from the main unit 6 Pull out the TC sensor from the sensor holder 2 screws 6 TC sensor When assembling the electrical parts assembly make the connecting cable U shaped and put it in the drain pan Horizontal grille Procedures 1 Remove center 2 shafts of the horizontal grille from the back bogy 2 Remove left shaft of the horizontal grille from the back bogy 3 Remove the horizontal grille from the back body FILE NO SVM 04054 Remarks 1 Center shafts 2 Left shafts Heat exchanger 1 Remove the front panel electrical parts assembly and the horizontal grille with procedure 2 and 3 2 Remove the screw on the rear side of the main unit to remove the pipe holder 3 Remove 2 screws fixing the heat exchanger and the bearing base 4 Remove 2 screws fixing the heat exchanger fixtures upper and lower and the back body then pull out the upper side of the heat exchanger slowly Pipe holder 3 2 screws Cross flow fan 1 Remove the front panel electrical parts assembly horizontal grille and the heat exchanger with procedure 4
59. ock and 1 ground screw on the electrical parts base 4 Remove the top cabinet 7 screws 24 x 10L 5 Remove the front cabinet 2 screws 24 x 10L 6 Remove the side cabinet 4 screws 24 10L amp 2 screws 24 141 FILE NO SVM 04054 Remarks Top cabinet Electrical parts cover Front cabinet Side cabinet 4 screws 24 x 22L Running capacitor for compressor 1 Perform the common procedure 1 2 Remove the capacitor band 1 screw 24 101 3 Disconnect the lead wires from the capacitor terminal Running capacitor for fan motor 1 Perform the common procedure 1 2 Remove the fixing screw 1 screw 24 x 101 3 Disconnect the lead wires from the capacitor terminal Magnetic contactor 1 Perform the common procedure 1 2 Remove the fixing screw 2 screws 24 x 101 3 Disconnect the lead wires from the terminal Transformer 1 Perform the common procedure 1 2 Remove the fixing screw 2 screws 24 x 101 3 Disconnect the housing from the P C Board P C Board 1 Perform the common procedure 1 2 Disconnect the lead wires from the P C Board 3 Remove P C Board after unhooking 4 clams 60 Magnetic contactor Running capacitor for compressor Running capacitor for fan motor Transformer 10 3 Outdoor Unit RAS 18UAH E3 1 Part name Common procedure Procedures Stop the operation of the air conditioner and turn off its main power su
60. ontrol B is indicated on the liquid crystal display when setting remote control selector switch to B A is not indicated on the display even if the selector switch is set to A Load the remote control with the batteries N T Press the CHECK button using something with sharp point The preset temperature on the remote control changes to 00 3 Press the MODE button while pressing the CHECK button B is indicted at the right of the present temperature display e To reset the switch to the A setting press the MODE button again while pressing the CHECK button AMG MODE button CHECK button Fig 8 6 2 3 Confirm that the indoor unit can operate with the new setting 36 FILE NO SVM 04054 8 7 Others 8 7 3 Auto restart setting 8 7 1 Gas leak test This product is designed so that after a power failure it can restart automatically the same operating mode Electric as before the power failure Qe iii N information ul ashi rt dons The product was shipped with Auto Restart function ey in the off position Turn it on as required Valve stem cap Flare nut connections connection lt How to set the auto restart gt Outdoor unit A A e Press and hold the TEMPORARY button for about F AN 3 seconds A
61. ontrol to stop blinking lamp on indoor unit Start to operate the indoor unit in except heating operation At this time is it possible to detect DC 1 V or more between 5 and 30 of motor connector CN10 Is it possible to detect DC 15 V between 4 and of motor connector CN10 4 Turn off indoor unit and remove connector from r NO motor Then start to leat P LAM bu flow operate indoor unit with an Dy mane Pe remote control Turn off indoor unit and rotate cross flow fan by hand when the unit is on standby At this time is it possible to detect DC 1 V or more between 5 and of motor connector CN10 NO Is it possible to change airflow level to High Start to operate the indoor unit in except heating operation At this time is it possible to detect DC 1 V or more between 5 and 3 of motor connector CN10 Check this condition within 15 seconds after starting unit Fan motor operates normally 47 Replace main P C board Replace bearing FILE NO SVM 04054 9 6 3 Indoor fan motor automatically starts to rotate by turning on power supply Cause The IC is built in the indoor fan motor Therefore the P C board is also mounted to the inside of the motor If the P C board is soldered imperfectly or the IC is defective the fan motor may automatically rotate by turning on power supply Inspection procedure gt 1 Remove
62. or IT The outdoor thermo sensor All off The lamp on the 1 Check the outdoor thermo sensor TE LI P C board is defective indoor unit blinks 2 Check the outdoor P C board Disconnection or short circuit when error is defected TT The outdoor heat exchanger TD All off The lamp on the 1 Check the outdoor heat exchanger t sensor is defective indoor unit blinks sensor TD zu Disconnection or short circuit when error is 2 Check the outdoor P C board defected M 74 Other parts The reply serial signal has been Operation The lamp on the 1 Repeatedly turn the indoor unit on and Li 2 including Wl transmitted when starting the continues indoor unit blinks off with the interval of approx 10 to 40 compressor unit but stops being transmitted when error is minutes The check code is not shortly after defected And it indicated during operation And supply 1 Compressor thermo operation returns to the gas Check gas leak Gas shortage normal condition 2 The indoor unit operates normally Gas leak when recovering during the check 2 Instantaneous power failure from errors If the reply serial signal continues to be transmitted between 2 and 3 of the indoor terminal block replace the outdoor P C board If the signal stops between them replace the indoor P C board The discharge temperature is All off The lamp on the 1 Check the heat exchanger sensor TD over 120 C indoor unit blinks 2
63. or is loose The board is defective Table 9 8 2 Approximate resistance value of thermo sensor Temperature Resistance value 9 8 2 How to Shorten Time of Restart Delay Timer Press CLR button while pressing CHECK button with a tip of a pencil 2 Then press START STOP button to transmit the signal to the indoor unit AAUTOA xx 9 5 6 9 E u OFF LILI PRESET OSTART STCS fra O OG RESET CLOCK CHECK 55 FILE NO SVM 04054 9 8 3 P C Board layout 5 u 2 gt VH N lt n 123456789XYZ Bottom View 56 FILE NO SVM 04054 9 9 Troubleshooting for Remote Control The unit does not beep at all OPERATION lamp on indoor unit is not indicated Press START STOP button Is transmission mark indicated Press RESET button on remote control Is receiver on with tip of pencil indoor unit exposed to direct sunlight Does indoor unit operate when moving remote control near receiver or indoor unit Press START STOP button YES Batteries are exhausted Is transmission mark indicated YES NO Does indoor unit beep and operate YES Remote control is defective Is there any thyristor fluorescent light nearby Does indoor unit start to operate by automa
64. ord Cover E Parts Magnetic Contactor MF Capacitor 60uF 440 V MF Capacitor 3 5uF 450 V Clip Cable Valve 4way Coil V 4way AC 220 240 V Sensor TE Sensor TD Nipple Drain Transformer TT 05 PC Board Assembly Nut Flange Dry Tank Capillary Tube 1 0 Dia Check Valve 11 4 Outdoor Unit RAS 18UAH E3 1 Location No 43005144 43T00005 43T00004 43742306 43700011 43719314 43719005 43762301 43020302 43721333 43747001 43796001 43043609 43746311 43747020 43746019 43747018 43747309 Description Cabinet Front Cabinet Back Cabinet Side Base Plate Packed Valve Guard Fan Handle Cover E Parts Fan Propeller Motor Fan AC 220 240 V 50 Hz Nut Flange Bushing Condenser Assembly Valve Packed 6 35 Dia Bonnet 6 35 Dia Valve Packed 12 7 Dia Bonnet 12 7 Dia Capillary Tube 0 8 Dia Location No FILE NO SVM 04054 19 CAPILLARY TUBE 0 8 DIA 37 CAPILLARY TUBE 2 0 DIA 43T49309 43T55316 43T55318 43T60324 43T41341 43T52302 43746319 43746310 43769059 43769060 43779305 43758301 43769336 43743316 43747013 43760325 43045085 Description Cushion Rubber MF Capacitor 45uF 370V MF Capacitor 2uF 450V Terminal Block 6P Compressor 2JS350D5DA02 Magnetic Contactor Valve 4way Coil V 4way AC 220 240 V VHV Sensor TE Sensor TD Nipple Drain Transformer TT 05 PC Board Assembly Sab Condenser Assembly Capillar
65. own in Fig 7 2 9 The Fan only operation continues until the room temperature reaches a level at which another mode is selected Temporary Auto When the TEMPORARY button on the indoor unit is pushed the preset temperature is fixed at 24 C and the indoor unit is controlled as shown in Fig 7 2 9 C Cooling operation The louver moves to the position same as Hi POWER operation 4 Cooling operation Fan only operation Heating operation Fig 7 2 9 7 3 POWER Mode Hi POWER button on the remote control is pressed When Hi POWER button is pressed while the indoor unit is in Auto Cooling or Heating operation Hi POWER mark is indicated on the display of the remote control and the unit operates as follows 1 Automatic operation e The indoor unit operates in according to the current operation 2 Cooling operation The preset temperature drops 3 C The value of the preset temperature on the remote control does not change e f the difference between the preset temperature and the room temperature is big the horizontal louver moves to the Hi POWER position automatically Then when the difference between them gets smaller the horizontal louver returns automatically FAN speed AUTO If the difference between the preset temperature and room temperature is big the air conditioner operates at maximum airflow level If the difference between the preset temperature and the
66. pply or remove the power supply cord Remove the electrical parts cover 4 screws 4 x 10L Remove 2 cord clamps 4 screws 4 x 22L and disconnect the power supply cord and connecting cable after removing 6 screws on the terminal block and 1 ground screw on the electrical parts base Remove the front cabinet 8 scerws 4 x 10L Pull the front lower portion toward you and pull out it upward to remove it Remove the side cabinet 8 screws 4 x 101 FILE NO SVM 04054 Remarks Remove 8 screws 04 x 10L 4 screws 04 22L 4 screws 04 x 10L Running capacitor for compressor Perform the common procedure 1 Remove the capacitor band 1 screw 4 x 101 Disconnect the lead wires from the capacitor terminal Running capacitor Perform the common procedure 1 Remove the fixing screw 1 screw 4 x 10L Disconnect the lead wires from the capacitor terminal Magnetic contactor Perform the common procedure 1 Remove the fixing screw 2 screw 24 x 16L Disconnect the lead wires from the terminal Transformer Perform the common procedure 1 Remove the fixing screw 2 screws 4 x 10L Disconnect the housing from the P C Board P C Board Perform the common procedure 1 Disconnect the lead wires from the P C Board Remove Board after unhooking 4 clams 61 Running capacitor for compressor Running capacitor for fan motor Magnetic contactor
67. prevent a cold draft The upper limit of the revolving speed is shown in Fig 7 2 8 and Table 7 2 1 Manual One of 5 steps L H Up to setting speed NOTES 1 2 3 4 fan stops for 2 minutes after thermostat OFF A is 24 C when the preset temperature is 24 C or more and A is the preset temperature when it is under 24 C SUL means Super Ultra Low Calculated from difference in motor speed between SUL and HIGH Fig 7 2 8 Cold draft preventing control 5 and 6 Table 7 2 1 5 6 Starting period Stabilized period Upuntil 12 minutes From 12 to 25 minutes passed after starting the unit From 12 to 25 minutes passed after starting the unit and room temperature is 3 C lower than preset temperature passed after starting the unit and room temperature is between preset temperature and 3 lower than preset temperature 25 minutes or more passed after starting the unit Room temperature Preset temperature 4 Room temperature 2 Preset temperature 3 5 C FILE NO SVM 04054 7 2 5 Automatic operation 1 T Room temp Preset temp 18 MODE button on the remote control is set to the automatic operation One of 3 operations Cooling Fan only or Heating is selected according to difference between the preset temperature and the room temperature at which the automatic operation has started as sh
68. r cord M CAUTION 5 Wrong wiring connection may cause some electrical parts burn out Be sure to comply with local codes on running the wire from indoor unit to outdoor unit size of wire and wiring method etc N Every wire must be connected firmly E 4 mm HO7RN F or 245 IEC66 or 3 5 mm AWG 12 NOTE Connecting cable Wire type More than 1 5 mm HO7RN F or 245 IEC66 or 1 3 mm AWG 16 35 8 6 How to Set Remote Control Selector Switch When two indoor units as installed in seperated rooms there is no need to change the selector switch Remote control selector switch When two indoor units are installed in the same room or the adjacent two rooms they may be controlled simultaneously with a single remote control To prevent this set either unit and its remote control to B setting Both units are set to A setting before shipment e The remote control signal is not recived when the indoor unit setting is different from the remote control one 1 Set the remote control selector switch with the indoor unit Turn the circuit breaker of the main power switch off before setting the selector switch 2 Remove the Air inlet grille and Front panel Refer to page 74 10 1 3 Select the terminal of selector switch from A position to B position Slector switch FILE NO SVM 04054 2 Set the remote control selector switch with the remote c
69. s 9 4 1 How to use remote conirol in service mode e Alphanumeric characters are used for the check code RESET CLOCK CHECK AAUTOA 0050 9 irj 128 LILI 2 HiPOWER PM 8 89 cH ENA G a a CO ASTART STOP auto PRESET O OG RESET CLOCK CHECK 5 is 5 is 6 is A h is B L is C d is D This illustration is only for Heat pump model For Cooling only model there is not the xx symbol FILE NO SVM 04054 1 Press CHECK button with a tip of pencil to set the 4 lt 40 remote control to the service mode e 00 is indicated on the display of the remote control e The timer lamp on the indoor unit blinks continuously 5 times per 1 sec Press TIMER A button If there is no fault with a code the indoor unit will beep once Pi and the display of the remote control will change as follows 00 01 02 1d 1 ES Check the unit with all 35 check codes 00 to 22 as shown in Table 9 4 1 e Press TIMER Y button to change the check code backwards If there is a fault the indoor unit will beep for 10 seconds Pi Pi Pi Note the check code on the display of the remote control e 2 digits alphanumeric will be indicated on the display All lamps on the indoor unit will blink 5 times per 1 sec Press
70. s follows Repeat the setting prodedure the unit receives the signal and beeps three times The unit will be required to be turned on with the remote control after the main power supply is turned off When the unit is on standby Not operating Operation Push TEMPORARY button for more than three seconds TEMPORARY button When the unit is in operation Operation Push TEMPORARY button for more than three seconds TEMPORARY button Motions The unit is on standby Y The unit starts to operate The orange lamp is on After approx three seconds The unit beeps three times The lamp changes from and continues to operate orange to green If the unit is not required to operate at this time push TEMPORARY button once more or use the remote control to turn it off Motions The unit is in operation The orange lamp is on Y The unit stops operating The orange lamp is turned off After approx three seconds The unit beeps three times If the unit is required to operate at this time push TEMPORARY button once more or use the remote control to turn it on e While this function is being set if the unit is in 7 8 Filter Check Lamp operation the orange lamp is on When the elapsed time reaches 1000 hours the filter 7 7 3 Power failure during timer operation check lamp indicates After cleaning the filters turn off the filter check lamp
71. side 26 35 mm 16 to 18 1 6 to 1 8 Same as Gas side 9 to 10 N m SS Ve part I gto LAKIEN e Hexagonel wrench A Unit mm Hexagonal wrench is required 22 S J V 8 5 4 Wiring connection 1 Remove the valve cover from the outdoor unit 2 Connect the connecting cable to the terminal as identified with their respective matched numbers on the terminal block of indoor and outdoor unit 3 When connecting the connecting cable to the outdoor unit terminal make a loop as shown in the installation diagram of indoor and outdoor unit to prevent water coming in the outdoor unit 4 Insulate the unused cords conductors from any water coming in the outdoor unit Proceed them so that they do not touch any electrical or metal parts FILE NO SVM 04054 Stripping length of connecting cable Terminal block YOR HHHH IH o lt r Terminal screw Earth line Cord clamp Screw Power supply cord Connecting cable md E s 70 80 60 70 v Y Earth line Power supply cord Connecting cable Fig 8 5 8 RAS 24UKHP E3 RAS 24UAH E3 1 RAS 18UKHP E3 RAS 18UAH E3 1 Power source 50 Hz 220 240V Single phase Maximum 18A 16A running current Plug socket amp 20A 20A fuse rating Powe
72. t related to Self Cleaning function e After holding about 20 seconds the air conditioner will beep 5 times and OPERATION display blinks 5 times e The Self Cleaning function had been set n N TEMPORARY button Remarks e Per setting of Self Cleaning function above AUTO RESTART function had been cancelled To set AUTO RESTART again please follow item 7 7 1 22 FILE NO SVM 04054 8 INSTALLATION PROCEDURE 8 1 Safety Cautions For general public use Power supply cord of Outdoor unit shall be more than 4 mm HO7RN F or 245 IEC66 polychloroprene sheathed flexible cord or 3 5 mm AWG 12 CAUTION To Disconnect the Appliance from the Main Power Supply This appliance must be connected to the main power supply by means of a circuit breaker or a switch with a contact separation of at least 3 mm If this is not possible a power supply plug with earth must be used This plug must be easily accessible after installation The plug must be disconnected from the power supply socket in order to disconnect the appliance completely from the mains FOR USE BY QUALIFIED PERSONS ONLY TURN OFF MAIN POWER SUPPLY BEFORE ATTEMPTING ANY ELECTRICAL WORK MAKE SURE ALL POWER SWITCHES ARE OFF FAILURE TO DO SO MAY CAUSE ELECTRIC SHOCK CONNECT THE CONNECTING CABLE CORRECTLY IF THE CONNECTING CABLE IS CONNECTED WRONGLY ELECTRIC PARTS MAY BE DAMAGED CHECK THE EARTH WIRE THAT IT IS NOT BROKEN OR DISCONNECTED BEFORE INSTALLA
73. tarts The PRE DEF lamp is indicated during the Defrosting operation or if the indoor heat exchanger temperature is low when the Heating operation starts At this time the indoor fan motor stops to prevent cold air from blowing in the room The outdoor fan motor stops in the Heating operation When the indoor heat exchanger temperature is high the outdoor fan motor is stopped by the high temperature limit control operation The compressor is not turned on even though the room temperature is in the range that the compressor is turned on The compressor is not turned on in the restart delay timer 3 minutes timer operation It is also not turned on after the power supply is turned on because of this timer operation The operation mode changes in the Automatic operation In Automatic operation the room temperature is detected all time for control fan speed and the operation mode is changed every 15 minutes according to difference between the room temperature and the preset temperature The Fan only operation continues in the Automatic operation When the room temperature is in the range Preset temperature 1 C the Fan only operation is selected The ECO operation or Hi POWER operation does not work These operations do not work when the unit is in the Dry operation or Fan only operation When Hi POWER button is pressed the display on the remote control does not change at all Note 5 and
74. tic restart function Does radio sound is affected by remote control when a signal is transmitted at distance of 5 cm from radio P C board is defective Avoid direct Keep indoor unit Replace Replace Normal Replace sunlight away from P C board batteries operation remote control thyristor fluorescent light Note After replacing batteries press the RESET button with a tip of a pencil 57 10 1 Indoor Unit Part name Front panel 10 PART REPLACEMENT Procedures How to remove the front panel 1 Stop the operation of the air conditioner and turn off its main power supply 2 Pull the inlet grille toward you to open it and remove 4 screws fixing the front panel 3 Remove upper 3 hooks of the front panel from the back bogy 4 Open the horizontal grille right below by hand 5 Pull the lower side of the front panel toward you until it touches the horizontal grille to remove it How to mount the front panel 1 Mount the front panel with the inverse procedure of How to remove the front panel 2 Push 3 places right left and center of the air outlet 3 Check the gap between the front panel and the back body If you operate the air conditioner in cooling or dry operation without pushing the 3 places the surface of the front panel may be covered with frost and have dewdrops FILE NO SVM 04054 Remarks 4 screws Electrical part assembly 1 Remove the front pa
75. tion Mode Selection AUTO COOL DRY HEAT FAN ONLY Temperature Setting Fan Speed Selection ON TIMER Setting OFF TIMER Setting Louver Auto Swing Louver Direction Setting m C 9 Hi power Filter Reset FILE NO SVM 04054 7 OPERATION DESCRIPTION 7 1 Outline of Air Conditioner Control This is a fixed capacity type air conditioner which uses a DC motor for an indoor fan The DC motor drive circuit is mounted in the indoor unit And electrical parts which operate the compressor and the outdoor fan motor are mounted in the outdoor unit The air conditioner is mainly controlled by the indoor unit controller The controller operates the indoor fan motor based upon commands transmitted by the remote control and transfers the operation commands to the outdoor unit controller The outdoor unit controller receives operation commands from the indoor unit and operates the outdoor fan motor and the compressor 1 Role of indoor unit controller The indoor unit controller receives the operation commands from the remote control and executes them Temperature measurement at the air inlet of the indoor heat exchanger by the indoor temperature sensor e Temperature setting of the indoor heat exchanger by the heat exchanger sensor Louver motor control Indoor fan motor operation control LED display control Transferring of operation commands to the outdoor unit e Receiving of information of the operation st
76. ve Replace compressor Replace capacitor Replace overload relay Compressor is defective Replace compressor Microcontroller is defective Is it possible to detect AC 220 240 V between 2 on the terminal block Are all of compressor cords normal YES Is compressor motor winding normal Check winding resistor YES Is capacitor for compressor normal YES Is overload relay normal YES Does compressor start YES Does compressor stop after a while YES Is gas quantity normal Check gas pressure YES Compressor is defective YES Replace Compressor 49 Miniature relay RY04 is defective Capacitor is defective Overload relay is defective Gas shortage Gas leak Supply gas FILE NO SVM 04054 Inspection procedure Colling model Turn on power supply Refer to item Power can not be turned on Does OPERATION lamp blink YES Is it possible to start unit by remote control YES Is it possible to detect AC 200V 1 E between and on terminal block YES Is crossover cable normal Gonnectrerossoyer cable properly YES Rewire or replace Are all of compressor cords normal defective cords YES Is compressor motor winding normal C is defecti Replace compressor Check winding resistor Compressors detective p YES Is capacitor for compressor normal Capacitor is defective Replace compressor YES Is o
77. verload relay normal Overload relay is defective Replace overload relay YES Does compressor start Compressor is defective Replace compressor YES Refer to 9 9 Troubleshooting for Remote Control Does compressor stop after a while YES Is gas quantity normal Check gas pressure YES Compressor is defective YES Replace P C borad Gas shortage Gas leak Supply gas 50 Inspection procedure Heating model Turn on power supply Does OPERATION lamp blink YES Is it possible to start unit by remote control YES Is it possible to detect AC 70 100V between 2 and 3 on terminal block Is crossover cable normal YES Is it possible to detect AC 12 V on secondary side CNO6 of transfer YES Is it possible to detect DC 5 V at IC61 and 12 V at IC51 YES Are TD and TE sensors normal TD 17 9 kQ at 50 C TE 10 kQ at 25 C Is it possible to detect AC 220 240 V at CN11 Does MG switch operate Next Page 51 FILE NO SVM 04054 Refer to item Power can not be turned on Refer to 9 9 Troubleshooting for Remote Control Check 01 04 Table 9 4 1 Connect crossover cable properly Replace transformer Replace outdoor P C board Replace sensors Replace outdoor P C board Replace MG switch FILE NO SVM 04054 s Are all of compressor cords normal YES Rewire or replace d
78. y Tube 2 0 Dia Filter Clamp Dry Tank TOSHIBA CARRIER THAILAND CO LTD 144 9 MOO 5 BANGKADI INDUSTRIAL PARK TIVANON ROAD TAM BOL BANGKADI AMPHUR MUANG PATHUMTHANI 12000 THAILAND
79. y of a building secure the normal fan operation using a duct or a wind shield 3 Specially in windy area install the unit to prevent the admission of wind 4 Installation in the following places may result in trouble Do not install the unit in such places A place full of machine oil e saline place such as the coast A place full of sulfide gas A place where high frequency waves are likely to be generated as from audio equipment welders and medical equipment 39 Me FILE NO SVM 04054 8 5 2 Refrigerant piping connection 1 Cut the pipe with a pipe cutter Roughness Warp H Fig 8 5 2 2 Insert a flare nut into the pipe and flare the pipe e Projection margin in flaring A Unit mm gt gt 4 Pipe Fig 8 5 3 Outer dia of copper pipe Rigid 1 0 to 1 5 1 0 to 1 5 1 0 to 1 5 Imperial 1 5 to 2 0 2 0 to 2 5 2 0 to 2 5 6 35 12 70 15 88 Tightening connection gt Align the centers of the connecting pipes and tighten the flare nut as far as possible with your fingers Then tighten the nut with a spanner and torque wrench as shown in the figure Do not apply excess torque Otherwise the nut may crack depending on the conditions 32 FILE NO SVM 04054 Unit 8 5 3 Evacuating Outer dia F After the piping has been connected to the indoor unit of copper pipe Tighten

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