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SERVICE MANUAL - General

1. Operation mode No Fan Cooling Sensor dehumidification Heating Automatic Control function Start stop button Start stop button 1 1 1 1 1 basic mode Operation lamp Start stop button Reservation TEMPERATURE OF INDOOR HEAT Cancel EXCHANGER THERMISTOR Operation lamp OFF timer Timer lamp OFF timer during stop Cancel Change of the reservation time v Start stop button 1 1 1 1 1 2 Ti Reservation 1 1 1 1 imer Cancel i 2 operation ON timer Operation lamp 5 Timer lamp d MEE E PDCUT1 ON timer during operation Cancel Change of the reservation time ET PD CUT2 PD CUT3 FAN RELAY OFF gt timer ON OFF timer during operation ON N timer during stop F
2. CONDENSER er h sor 1 3S VALVE REVERSING Y VALVE 9 101 T EVAPORATOR T T CAPILLARY amp Y COOLING STRAINER CAPILLARY 2S VALVE CHARGING CHECK VALVE STRAINER PIPE 42 MODEL 14 2 14 2 ACCUMULATOR CONDENSER 2 m 3S VALVE REVERSING VALVE 2 23 2 3 9 9 6 IB HEATING DS HEATING amp Y pai COOLING STRAINER CAPILLARY 2 VALVE 1 lt gt CHARGING CHECK VALVE STRAINER PIPE 43 DESCRIPTION OF MAIN CIRCUIT OPERATION 1 ON OFF The ON OFF and Timer reserve button and Sleeping function independently Their operations are shown in Fig 1 1 Start Stop Start ON OFF button Timer reserve button When Sleeping timer sleeping is set Operation lamp Timer lamp OFF time Start Stop ON OFF button Timer reserve button When ON timer is set Operation lamp Timer lamp ON time Fig 1 1 Timer operation 44 2 Reset Circuit 5V 12V Micro com
3. P As the settings are stored in memory in the remote controller you only have to press the 1 START STOP button next time A You can raise or lower the temperature setting as necessary by maximum of Press the temperature button and the temperature setting will change by 1 C each time The preset temperature and the actual room temperature may vary somewhat depending on conditions The display does not indicate the preset temperature in the AUTO mode C If you change the setting the indoor unit will produce a beep J Condition of Automatic Operation ming temperatute Function Temperature setting FAN SPEED approx HI at start MED or LOW Over 27 C gt COOL 27 C after the preset temperature is reached E Slightly lower than the EE gt DEHBMIDIEY room temperature LOW HI at start MED or LOW Under 23 C e HEAT 23 C after the preset temperature is reached 13 HEATING OPERATION e Use the device for heating when the outdoor temperature is under 21 C When it is too warm over 24 C the heating function may not work in order to protect the device e In order to keep reliability of the device please use this device above 10 C of the outdoor temperature HIT I N m Press the FUNCTION selector so that the display indicates HEAT Set the desired FAN SPEED with the 2 FAN SPEED button the display indi
4. XH4P 20 cng KS 2mm SLR332YC Q202 25 1121 CN15 5 IKA 2 IKA amp w x a 1 7 20 11 7 4 1 00909099039900 CN2M SLR332YC 211 BLOCK DIAGRAM MODEL 5 08 2 5 10 2 5 14 2 RAC 08KH2 RAC 10KH2 RAC 14KH2 INDOOR UNIT OUTDOOR UNIT gt compressor POWER SUPPLY DC FAN MOTOR INDOOR OUTDOOR OPERATION CIRCUIT FAN MOTOR FAN MOTOR REVERSING VALVE WIRELESS REMOTE 4 WIRELESS RECEN POWER RELAY CONTROLLER ING CIRCUIT gt gt RELAY REVERSING ROOM TEMPERATURE c VALVE RELAY THERMISTOR EXTERNAL FAN RELAY HEAT EXCHANGER THERMISTOR gt BUZZER CIRCUIT 5 INITIALIZING OPERATION CIRCUIT gt ee TIMER FILTER RESET gt AX 3U AUTO SWEEP MOTOR CIRCUIT A MICROCOMPUTER CLOCK CIRCUIT BASIC MODE MODEL 5 08 2 10 2 14 2 08 2 10 2 14 2
5. Cooling Heating Minimum Maximum Minimum Maximum Dry bulb C 21 32 20 27 Indoor Wet bulb C 15 23 12 19 Dry bulb C 21 43 2 21 Wet bulb C 15 26 1 15 30 CONSTRUCTION AND DIMENSIONAL DIAGRAM MODEL RAS 08KH2 10KH2 14KH2 Indoor unit service space 47 hose for the drain cap 210 205 780 Mounting plate Front panel 5 47 400 400 190 70 70 About 380 Drain pan NB 7 7 5X When piping is o T T T drawn horizontally 2 pg exchange the drain View from back Pipe lead out eee Drain hose Drain cap connection port Approx 108 Approx 370 Approx 70 Narrow pipe 06 35 Wide pi pipe 09 52 _ S Power cord _ _ Note Servicing space of 100mm or more is required on the left and right sides of the indoor unit and also 50mm or more space is required above the unit Insulated pipes should be used for both the narrow and wide dia pipes Piping length is within 15m RAS 14KH2 10m RAS 08KH2 RAS 10KH2 Height different of the piping between the indoor u
6. m m ZIN AM 2 mm P ON OFF Timer 1 Press the Os ON OFF 2 Set the turn off time 3 Press the ON button so that the OFF with the TIMER control TIMER button so that the san o mark blinks button OFF mark lights and Press the RESERVE the ON mark blinks button The device will turn off and off ELE at the designated times 2230 The switching occurs first at the A 1 70 1 E preset time that comes earlier siy 7 6 Siy SE The arrow mark appearing on the Qa display indicates the sequence of AM switching operations How to Cancel Reservation Point the signal window of the remote controller toward the indoor unit and press the CANCEL button The RESERVED sign goes out with a beep and the TIMER lamp turns off on the indoor unit NOTE You can set only one of the OFF timer ON timer and ON OFF timer 18 2 Press the TIME button gt gt po C 2 1 1 t Example The current time is 1 30 p m 3 Set the current time with the TIMER control button 4 Press the TIME button again The time indication starts lighting instead of flashing p e automatically 10 second ILI
7. 4 Wait for 3 minutes before forced re operation by the service switch Replace faulty part 3 CN6 BLUE RED V RAS 08KH2 RAS 10KH2 RAS 14KH2 RAC 08KH2 RAC 10KH2 RAC 14KH2 Fan Speed Cool Heat Cool Heat Cool Heat HI 20 8 20 8 21 3 23 0 27 0 28 4 MED 15 6 17 9 18 0 19 7 20 9 23 6 LO 12 5 15 0 13 7 16 6 15 8 19 3 SLEEP MODE 11 0 15 0 11 9 16 6 13 0 19 3 B6 Timer Lamp break down checking in blinking sign Check the break down factor from the frequency of timer lamp blinking Mode of Timer Lamp blinking Indication Factor Estimated Break Down Part 4 way valve not working Inside temperature is low in heating 1 4 way valve is not working 1 1 1 time operation time inside 2 Heat exchanger thermistor is temperature is high in cooling in disconnection operation time Only heating time Force cooling operation Check force cooling switch at Unit is under forcible operation or indoor electrical sec 2 times under balancing after forcible operation DC Fan motor over flow of 1 Indoor Fan is locked electricity EE Elf 10 times Indoor DC Fan motor has over 2 Indoor Fan motor damage flow of electricity 2 3 Indoor control circuit board IC 401 Data read wrongly 1 401 data is not in order In case that data read from 1 401 13 times is wrong 14 times 1
8. i shall be 23 H gt HI Power rela temperature shift Fan relay SS amount L MED Stick relay External fan relay e AL Power relay E 1 5 10 Stick relay A shift is not accepted at the Operation lamp The min ON time of the power relay is 3 minutes and the External fan relay time of operation start The power relay is H min OFF time also is 3 minutes Reversing valve relay There is no switching between delayed by 2 seconds SL The indoor fan is not delayed with operation start by start Pilot lamp modes after start of operation from the start of stop button ON Hot keep lamp When the operation is started thermostat operation The indoor fan is delayed by 5 sec with operation start again within 20 min after Note by thermostat operation stop with the start stop button The min ON time of the power relay is 3 minutes and the min OFF time S PrEVIOUS MOGE inute 2 Set temperature is higher than room temperature The operation details are the Not Air blow mode A B same as for each operation mode otes 2 In other modes than Automatic Nie cae Forced operation by start stop H L H set Same as above but operation is 033460 gt button ON is executed even L L L e room temperature made with the velocity set at the with thermostat OFF adjustment button Correction time of operation start Start stop button sec 30sec The r
9. T1 08 622 055008 115 481 L2 0 01 010 AC258V 258V sen sen 1 8 24 02 vcc HN1D03FU 51 0481 0 1uF 0 O1uF AC258V AC258V 570 25V 0 14F 95 512 5 P94 SCK2 P93 S01 91 1 P77 FD15 P76 FD14 P75 FD13 P74 FD12 P73 FD11 P72 FD18 P70 FD8 POO ANO 7 1 50 1 P66 FD6 FS1 R622 i 2 2 P65 FD5 FS2 P64 FD4 FS3 PO4 AN4 P63 FD3 FS4 POS ANS P62 FD2 FS5 P61 FD1 FS6 PO7 AN7 H8 3712 P60 FD0 FS7 P17 Ndisp R620 P57 FS8 R601 Y Ex UA 2 Bee RE 72 37 9 AUTO RESTART CANCEL AZ 910V 561K NJM78M05 cadis R604 R603 UD 1102 REG2 P55 FS10 1 10 8187 2106 2 TED _ 0108 IN OUT 55 R606 R627 1 3 P54 FS11 254628 34 Q S AN 608 R607 ES GND 5 P53 FS12 2 5 ee joe gd 0105 ooon Ps a a 25V 50V 17312 Z 10V NNAN eee ee 10 s 528 1 GANS 180 11111311 SES MV MM M MM MM 1 see 4 lt gt 5 8615 h 382333832382 1 2 mM R206 O 21 NLN 2 o R630 ig 5 i S SW2 5555912500 5 gt lt gt
10. HEAT DEHUMIDIFY cooL Precautions for Use FAN Do not put the remote controller the following places Emu ee Under direct sunlight o e In the vicinity of a heater SLEEPING Handle the remote controller carefully Do not drop it on the floor O STOP CANCEL and protect it from water START RESERVE Once the outdoor unit stops it will not restart for about 3 minutes D START STOP unless you turn the power switch off and on or unplug the power TIME cord and plug it in again TIMERSET This is to protect the device and does not indicate a failure press the FUNCTION selector button during operation the device may stop for about 3 minutes for protection 12 AUTOMATIC OPERATION varies The device will automatically determine the mode of operation HEAT COOL or DEHUMIDIFY depending on the initial room temperature The selected mode of operation will not change when the room temperature Press the FUNCTION selector so that the display indicates the AUTO mode of operation the initial room temperature RT Press the 0 START STOP button Operation starts with a beep When AUTO has been selected the device will automatically determine the mode of operation HEAT COOL or DEHUMIDIFY depending on Press the button again to stop operation
11. 2 Defrosting is on Wait for 5 10 minutes unit the outdoor unit is defrosted The fan speed is set to HI or MED but the heating operation starts with a LO fan speed 2 The heating operation starts with a LO fan speed for 30 seconds If the fan speed is set to HI the operation starts with LO fan speed followed by MED fan speed for 30 seconds and then by HI fan speed The operation stops during a heating operation while the room temperature is set at 30 If a heating operation is per formed when the exterior temperature is high the op eration may stop to protect the equipment The outdoor fan does io move at a heating operation by the service switch 2 is not a trouble When heating the outdoor fan is stopped to avoid ex cessive pressure rise Auto fresh defrosting Heating has been turned off by the main operation but the Hot keep lamp lights and the outdoor unit operations Auto fresh defrosting operates When stopping the operation whether the outdoor unit is frosted or not is checked and if in the affirmative defrosting is performed before stopping the operation 50 Automatic operation Q12 How is the automatic operation mode determined 2 9 At an automatic operation changing the fan speed
12. lt velocity gt ET 2 60 minutes LO sl ti Table 1 Specifications perature Start stop switch sleep operation Start stop switch Sleep key 1 Sleep key 5 Item o gt i 3 Timer lamp Heatin Yes When the sleep key is switched on during OFF timer operation the OFF timer will be cancelled Fan The set temperature The operation is Sensor Yes 7 after sleep shift in switched OFF dehumidification sensor dehumidification at the set time TR Sleep operation is executed Cooling Yes operation is limited temperature 1 9 for each operation mode by 16 C velocity 1 LO sl ti Temporary switch Yes automatic Moles switch 60 minutes after the sleep key is switched on sleep operation Sleep key I g is started Cooling Yes eration lamp n When the sleep key is switched on during OFF timer operation E i Nice temperature reservation Yes the OFF timer will be canceled Sleep key Automatic fresh defrosting Yes Timerlamp Defrosting Yes Pd cut 1 Yes When the sleep key is switched on during ON after a timer reservation sleep operation will be started Pd cut 2 Yes Pd cut 3 Yes Strong circulati i Heating load reduction Yes n 15sec 30 sec 30 sec At the time of heating 9
13. Never use hot water above 40 C benzine gasoline acid thinner or a brush because they will damage the plastic surface and the coating 3 MAINTENANCE AT BEGINNING OF LONG OFF PERIOD e Run the unit by setting the operation mode to FAN and the fan speed to HI for about half a day on a fine day and dry the whole of the unit e Switch off the power plug 28 CAUTION Please use earth line Do not place the earth line near water or gas pipes lightning conductor or the earth line of telephone Improper installation of earth line may cause electric shock e A circuit breaker should be installed depending on the mounting site of the unit Without a circuit breaker the danger of electric shock exists IMPORTANT The wires in this mains lead are coloured in accordance with the following code Green and yellow Earth Blue Neutral Brown Live As the colours of the wires in the mains lead of this appliance may not correspond with the coloured markings identifying the terminals in your plug proceed as follows The wire which is coloured green and yellow must be connected to the terminal in the plug which is marked with the letter E or by the earth symbol or coloured green or green and yellow The wire which is coloured blue must be connected to the terminal which is marked with the letter N or coloured black The wire which is coloured brown must be connecte
14. press the TIME button twice The setting of the current time is now complete 25a the turn off time with the TIMER control button 3 Point the signal window of the remote controller toward the indoor unit and press the RESERVE button The OFF mark starts lighting instead of flashing and the sign 6 RESERVED lights A beep occurs and the TIMER lamp lights on the indoor unit e 11110 O Example The device will turn off at 11 00p m e The setting of turn off time is now complete 25 the turn on time with the TIMER control button 3 Point the signal window of the remote controller toward the indoor unit and press the RESERVE button The ON mark starts lighting instead of flashing and the RESERVED sign lights beep occurs and the C TIMER lamp lights on the indoor unit 6 4 J Example The device will automatically turn on earlier so that the preset temperature can be reached at 7 00 a m The setting of the turn on time is now complete 4 Set the turn on time with the TIMER control button NIA 01 2 1 ZIN 5 Point the signal window of the remote controller toward the indoor unit and press the RESERVE button The ON mark starts lighting instead of flashing and the RESERVED sign lights A beep occurs and the 6 TIMER lamp lights on the indoor unit Lu E
15. DIAGRAM Remote Control D3 K13 K14 RBA425D 1 2 C8 50v tu 0101 23 K7 K8 KI5K16 01 4 10 02 ace E K5 K11K12 K18 D3 a a Key matrix table Output Input DO D1 D2 D3 Door open Door shut Door open P10 Start Stop Start Stop On timer Operation selection Super silent cooling Hour up Fan speed selection Hour down Automatic swing Day present time P11 Door shut Room temperature up Room temperature down Super cooling Door open Off timer Reservation Cancel Door shut 100k M34550M6A 504FP Sleep R15 100k 0102 EL 1L7 D3 2 RB425D D1 02 1 2 5 oo 9 o R10 100k 100k im 7 m d T R6 R9 RI 2 gla 24 1 8W 150k 77 489 13 187 32 768 Le 01 xt kHz 220 330 2563443 Ki9 91042 p R4 or 252982 L TT 100k mo R16 104 T 104 7 34 02 C3 04 0 R12 220 220p 18 220 220k PRINTED WIRING BOARD LOCATION DIAGRAM MODEL RAS 08KH2 10KH2 14KH2 RAC 08KH2 10KH2 14KH2 DAER XT VS 2 50 R912 1 0901 254528 250V 3 15A EYF52BC 0 27 5
16. be careful not to have the test probes of the measuring instrument shortcircuit a load circuit or the like A CAUTION 1 In quiet or stopping operation slight flowing noise of refrigerant in the refrigerating cycle is heard occasionally but this noise is not abnormal for the operation When it thunders near by it is recommended to stop the operation and to disconnect the power cord plug from the power outlet for safety In the event of power failure the airconditioner will restart automatically in the previously selected mode once the power is restored In the event of power failure during TIMER operation the timer will be reset and the unit will begin or stop operating under a new timer setting If the room air conditioner is stopped by adjusting thermostat or missoperation and re start in a moment there is occasion that the cooling and heating operation does not start for 3 minutes it is not abnormal and this is the result of the operation of IC delay circuit This IC delay circuit ensures that there is no danger of blowing fuse or damaging parts even if operation is restarted accidentally This room air conditioner should not be used at the cooling operation when the outside temperature is below 10 C 50 F This room air conditioner the reverse cycle should not be used when the outside temperature is below 10 14 F If the reverse cycle is used under this condition the outside heat exchanger is frosted and effi
17. careful to prevent the occurence of any accident such as electrical shock leak of current or bodily injury due to the drop of any part To check the insulation of the unit measure the insulation resistance between the power cord plug and grounding terminal of the unit The insulation resistance should be 1MQ or more as measured by a 500V DC megger The initial location of installation such as window floor or the other should be checked for being and safe enough to support the repaired unit again If it is found not so strong and safe the unit should be installed at the initial location reinforced or at a new location Any inflammable thing should never LES be placed about the location of e ke ee installation Check the grounding to see whether it is proper or not and if it is found improper connect the grounding terminal to the earth WORKING STANDARDS FOR PREVENTING BREAKAGE OF SEMICONDUCTORS 1 Scope The standards provide for items to be generally observed in carrying and handling semiconductors in relative manufacturers during maintenance and handling thereof They apply the same to handling of abnormal goods such as rejected goods being returned Object parts 1 Micro computer 2 Integrated circuits IC 3 Field effect transistors FET 4 P C boards or the like on which the parts mentioned in 1 and 2 of this paragraph are equipped Items to be observed in handling 1 Use a condu
18. out operation signal to the indoor unit So as to operate the whole unit Refer page 10 Drain pipe Condensed water drain to outside Connecting cord and insulation pipe for piping Air inlet Back Left side Air outlet Drain pipe Condensed water drain to outside Connecting cord and insulation pipe for piping Air inlet Back and Left side 1 MODEL NAME AND DIMENSIONS Air outlet A CAUTION When heating operation drain or defrosted water flows out from outdoor unit Don t close drain outlet portion in chilly area so as not to freeze these MODEL WIDTH mm HEIGHT mm DEPTH mm RAS 08KH2 10KH2 14KH2 780 280 205 RAC 08KH2 10KH2 700 570 210 14 2 750 570 280 y INDOOR UNIT INDICATORS O SWITCH 000000 000000 OPERATION INDICATOR TEMPORARY SWITCH FILTER LAMP When the device is operated for a total of about 100 hours the FILTER lamp lights to indicate that it is time to clean the filter The lamp goes out when the POWER SWITCH set to OFF and ON again OPERATION LAMP This lamp lights during operation The OPERATION LAMP flashes in the following cases during heating 1 During preheating For about 2 3 minutes after starting up 2 During defrosting Def
19. relay Low temperature T1 ON C 1 0 2 Power relay External fan rela defrosting Reset C 12 0 5 Stick relay Outside fan relay Heater relay Preheating Reset C 17 0 Defrosting 5 l ON C 15 0 9 including automatic O Operation lamp Operation lam E fresh defrosting Hot keep lamp Min 3 minutes T m 5 94 1 50 0 42 5 Fanrelay S 30 sec 60 sec 30 60sec minutes T4 Reset C 47 0 38 5 Power rela For the time TE after start of heating operation defrosting will not be Pd cut 2 16 0 63 0 2 Stok relay iiis Nm ening es executed even when the defrosting signal is given as input 7 Reset 57 0 Outside fan relay When the reserve cycle defrosting TA has continued for the time Ona 5 5 TB 30 sec shown in the table on the left the operation advances to TB and TC Fan Original 430 5 Operation lamp Silencing period independent of the defrosting signal Pd cut 3 T8 ON C 71 0 m TC 30 sec When the power relay becomes ON after expiration of the time TE T9 Reset 63 0 Cycle balancing time defrosting will be started immediately with input of the defrosting signal Once defrosting has been completed the defrosting signal is not accepted for the time TE TE 50 min When a defrosting signal has been given as input at the time of stop Defrosting prohibition 0
20. 1 15 times Heat exchanger thermistor error Heat exchanger thermistor open or short circuit detected Room thermistor error Room thermistor error open or short circuit detected 1 Thermistor 2 Indoor control circuit board 1 Thermistor 2 Indoor control circuit board 0 5 second on 0 5 second off A CAUTION Remote control is disabled while the Timer lamp is flashing To check operation turn off the power switch and turn it on again PARTS LIST AND DIAGRAM MODEL RAS 08KH2 RAS 10KH2 RAS INDOOR UNIT 14KH2 OL f 7 0 7 p fis 58 T 56 PARTS LIST AND DIAGRAM MODEL RAC 08KH2 RAC 10KH2 OUTDOOR UNIT _ 59 _ PARTS LIST AND DIAGRAM OUTDOOR UNIT MODEL RAC 14KH2 60 THE UPDATED PARTS LIST FOR THIS MODEL IS AVAILABLE ON ESTA HITACHI RAS 08KH2 RAC 08KH2 RAS 10KH2 RAC 10KH2 RAS 14KH2 RAC 14KH2 5 0285
21. 2 NO 0 N N m D When the buzzer is to be activated buzzer output pin the micro computer alternates between ON and OFF repeatedly at 4kHz and Q302 is turned ON OFF accordingly A 4kHz voltage is applied to the buzzer and the diaphragm of the buzzer vibrates to output 4kHz sound 4 Initial setting IC301 The pre heating operation start value ratings of the compressor maximum rotation speed etc are preset in the micro computer 5V 519 1 1 5 512 te 2 8 AX 3U ATDA d 84766 EN 10301 8 8 3 E2PROM 9 9 R305 DOG bob die m ov 5 Receive circuit 12V 2 cre Micro computer AX 3U e R622 27 REMOCON 5 8712 1 Receiver 710 Unit R621 N Infrared signals from the wireless remote controller are received by the light receiving unit and output after being amplified and shaped 46 6 Service Operation Circuit Micro computer AX 3U R606 VW FORCE COOL 22 0 Cool Normal e Use the service switch to select Cooling temporarily when the interior electric equipment has troubled e Setting the switch to Cooling causes continuous cooling room temperature control To control the ro
22. 5 MAIN PARTS COMPONENT THERMOSTAT Room Temperature Thermistor Thermostat Specifications MODEL RAS 08KH2 10KH2 14KH2 THERMOSTAT MODEL OPERATION INDICATION 18 7 65 6 18 19 3 66 7 TEMPERATURE F INDICATION 26 7 80 1 27 3 81 1 INDICATION 34 2 94 5 35 3 95 5 FAN MOTOR Fan Motor Specifications MODEL 5 08 2 10 2 14 2 08 2 10 2 14 2 PHASE SINGLE RATED VOLTAGE 220 240V RATED FREQUENCY 50 Hz OUTPUT 20W 30W 30W POLE NUMBER 6 INTERNAL THERMAL FUSE CONNECTION BLACK RM 253 0 RM 250 3 RESISTANCE VALUE 173 4 171 1 RM 307 7 RM 304 4 210 9 208 1 33 COMPRESSOR MOTOR Compressor Motor Specifications MODEL 08 2 10 2 14 2 COMPRESSOR MODEL 5RS080 5PS112 5PS132 PHASE SINGLE RATED VOLTAGE 220 240 V RATED FREQUENCY 50 Hz LOCKED ROTOR CURRENT 45 POLE NUMBER 2 ORANGE CONNECTION RESISTANCE VALUE 0 EXTERNAL OVERLOAD RELAY INTERNAL PROTECTOR MORR ORANGE RAC 08KH2 RAC 10KH2 RAC 14KH2 A CAUTION When the Air Conditioner has been operated for a long time with the capillary tubes clogged or crushed or with too little coolant check the color of the refrigerant oil inside the compressor If the colo
23. 9 900 11 950 TOTAL INPUT TOTAL AMPERES HEATING 490 510 530 2 30 2 30 2 30 740 770 810 3 50 3 50 3 50 960 1000 1050 4 60 4 60 4 60 CAPACITY 2 20 3 00 3 85 7 510 10 240 13 150 DIMENSIONS mm 700 570 210 NET WEIGHT 32 X After installation SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT ROOM AIR CONDITIONER INDOOR UNIT OUTDOOR UNIT DECEMBER 2005 Refrigeration amp Air Conditioning Division 10 11 SAFETY DURING REPAIR WORK In order to disassemble and repair the unit in question be sure to disconnect the power cord plug from the power outlet before starting the work If it is necessary to replace any parts they should be replaced with respective genuine parts for the unit and the replacement must be effected in correct manner according to the instructions in the Service Manual of the unit If the contacts of electrical parts are defective replace the electrical parts without trying to repair them After completion of repairs the initial state should be restored Lead wires should be connected and laid as in the initial state Modification of the unit by user himself should absolutely be prohibited Tools and measuring instruments for use in repairs or inspection should be accurately calibrated in advance In installing the unit having been repaired be
24. AN RELAY L Start stop button POWERRELAY Reservation STICK RELAY OFF ON Cancel g gt B EXTERNAL FAN RELAY timer a REVERSING VALVE RELAY Timer memory emma e 3 ll ee Ll 7 1 00 3 00 5 00 1 00 3 00 5 00 1 00 3 00 5 00 1 00 3 00 5 00 AIR BLOW CHANGE WHEN ENTERING PD CUT 2 Operation in the previous Hl MED or LO operation Is MED LO and Stop are repeated according to the thermostat AIR BLOW CAN BE CHANGED BY REMOTE CONTROL AFTER TEMP T Automatic circulation mode executed according to the thermostat signal and time AIR BLOW RETURNS TO THE SET SPEED AT T 5 signal Refer to Thermostat operation HI Operation in HI mode Same as on the left MED LO and Stop are repeated according to the thermostat The Automatic speed mode LO and Stop are repeated according to the thermostat signal and time for Sach operation Hope s used mode signal independent of the setting independent of the s tting MED Operation in MED mode Same the left LO and Stop are repeated according to the thermostat signal Week at the time of Sensor All relays are stopped by low and time dehumidification 5 temperature input n 1 T g i LO Operation in LO mode Same as on the left LO
25. HITACHI Inspire the Next SERVICE MANUAL TECHNICAL INFORMATION FOR T PERSONNEL ONLY RAS 08KH2 RAC 08KH2 RAS 10KH2 RAC 10KH2 RAS 14KH2 RAC 14KH2 REFER TO THE FOUNDATION MANUAL CONTENTS SPECIFICATIONS 5 8 lj CONSTRUCTION AND DIMENSIONAL DIAGRAM 31 MAIN PARTS COMPONENT 33 RAS 08KH2 WIRING DIAGRAM e eren 35 RAS 10KH2 CIRCUIT DIAGRAM 36 RAS 14KH2 PRINTED WIRING BOARD LOCATION DIAGRAM 37 BLOCK DIAGRAM eee 38 RAC 10KH2 BASIC 39 REFRIGERATING CYCLE DIAGRAM 42 SSS DESCRIPTION OF MAIN CIRCUIT OPERATION 44 AUTO SWING FUNCTION 48 SERVICE Qi BJ speed retired 49 E PARTS AND DIAGRAM 58 SPECIFICATIONS WALL TYPE INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT RAS 08KH2 RAC 08KH2 RAS 10KH2 RAC 10KH2 RAS 14KH2 RAC 14KH2 TYPE MODEL POWER SOURCE TOTAL INPUT 1 PHASE 50 Hz 220 230 240V 590 610 630 1 PHASE 50 Hz 220 230 240V 890 900 950 1 PHASE 50 Hz 220 230 240V 1060 1090 1120 COOLING TOTAL AMPERES 2 80 2 80 2 80 4 20 4 10 4 10 5 00 5 00 4 90 CAPACITY 2 10 2 90 3 50 7 170
26. In quiet operation or stopping the operation the following phenomena may occassionally occur but they are not abnormal for the operation 1 Slight flowing noise of refrigerant in the refrigerating cycle 2 Slight rubbing noise from the fan casing which is cooled and then 4 gradually warmed as operation stops 7 e e The odor will possibly be emitted from the room air conditioner because the various odor emitted by smoke foodstuffs cosmetics and so on sticks to it So the air filter and the evaporator regularly must be cleaned to reduce the odor e Please contact your sales agent immediately if the air conditioner still fails to operate normally after the above inspections Inform your agent of the model of your unit production number date of installation Please also inform him regarding the fault e Power supply shall be connected at the rated voltage otherwise the unit will be broken or could not reach the specified capacity Please note On switching on the equipment particularly when the room light is dimmed a slight brightness fluctuation may occur This is of no consequence The conditions of the local Power Supply Companies are to be observed Note e Avoid to use the room air conditioner for cooling operation when the outside temperature is below 21 C 70 F The recommended maximum and minimum operating temperatures of the hot and cold sides should be as below
27. S Air Down 55 63 blowing 55 0 in up direction 3 Swing start direction 9 direction control Son eet gt gt 90 in down direction Heating UP 50 up direction Vertical positioning 10 Down 9 90 C in down direction 10 C in up direction Swing start direction When the operation switch is turned off 1 gt Automatic shut Vertical positioning 115 operation recti i m 106 C in down direction 445 in up direction Table 1 Specifications Item RAS 08 10 14KH2 Automatic Yes Heating Yes Operation switching Sensor dehumidification Yes Cooling Yes Fan Yes Temporary switch Yes automatic Service switch Cooling Yes Nice temperature reservation Yes Defrosting Yes Sleep circuit Yes Heater operation at the time of sensor dehumidification No Automatic blowing direction Yes Filter sign Yes Wireless mode Heat and Cool wireless Table 2 Sensor operation values Item RAS 08 10 14KH2 ON temperature 16 16 6 Cooling sensor Thermostat operation Thermostat relay dehumidificati 24 24 6 power relay C ehumidification 32 32 6 Differential 0 33 T1 ON 1 0 Low temperature defrosting Reset C 12 0 Other detailed specifications When the room temperature starts to increase within 3 minutes after thermo OFF in cooling and fan speed AUTO the fan speed changes L M
28. TACHI Signal emitting window transmission sign Point this window toward the indoor unit when controlling it The transmission sign blinks when a signal is sent Display This indicates the room temperature selected current time timer status function and intensity of circulation selected START STOP button Press this button to start operation Press it again to stop operation SLEEP button Use this button to set the sleep timer TEMPERATURE buttons Use these buttons to raise or lower the temperature setting Keep pressed and the value will change more quickly TIME button Use this button to set and check the time and date RESET buttons FUNCTION selector Use this button to select the operating mode Every time you press it the mode will change from 5 AUTO to HEAT to DEHUMIDIFY to COOL to FAN cyclically FAN SPEED selector This determines the fan speed Every time you press this button the intensity of circulation will change from AUTO to to MED to LOW during the FAN mode from amp HI to MED to S LOW AUTO SWING button Controls the angle of the horizontal air deflector TIMER control Use this button to set the timer OFF TIMER button Select the turn OFF time ON TIMER button Select the turn ON time RESERVE button Time setting reservation ale CANCEL button Cancel time reservation
29. WNWARD MAIN SWITCH OFF DURING OPERATION EACH MODE STOP DURING SWINGING DURING INITIALIZING ONE SWING CLOSING AIR DEFLECTOR DOWNWARD 0 UPWARD INITIALIZE AT NEXT OPERATION CHANGE OF OPERATION DURING OPERATION EACH MODE STOP INITIALIZING CONDITION OF EACH MODE DURING SWINGING STOP SWINGING AND MODE BECOMES INITIALIZING CONDITION SERVICE CALL Q amp Cooling operation While cooling the compressor sometimes stops abruptly M Dehumidifying operation The fan speed does not change during a dehumidifying operation Cold air comes out during a dehumidifying operation The operation does not stop even by raising the room temperature setting of remote control at a dehumidifying operation 2 2 In the dehumidifying mode the temperature set by remote controller is set slightly higher than the room temperature but the operation starts Check whether frost sticks on the heat exchanger of in door unit or not Wait for 3 4 minutes until the frost melts The fan speed is always 07 at a dehumidifying operation x 5 To improve the dehumidi 5 fication efficiency LO fan speed operation is performed Therefore the air is cold This is not a trouble 42 At dehumidi
30. ab operation mode the same External fan relay Yes Start stop switch H operation as for heating Reversing valve relay Yes Thermostat signal is executed Reversing valve lock protection Yes Preheating signal Sleep circuit Y Fan relay H es Fan relay L Heater operation at the time of sensor No Fan relay S dehumidification Preheating Power relay 2 sec 2 Automatic blowing direction Yes 8 operation Hot keep lamp Filter sign Yes T 3 minutes Notes Wireless mode Cooling Heating Even when the preheating signal is not given as input heating operation is started when 3 minutes have passed for T Table 2 Sensor operation values Preheating operation is executed at the time of operation start and after completion of defrosting and at all other times there is no operation independent of the preheating signal fen 8 2 2 2 Cooling Sensor 16 16 6 start Completion operation ON temperature dehumidification 24 24 6 M 15 minutes TE mode is executed 30 sec 30 Maosec 30sec Thermostat Thermostat relay 32 32 6 Start stop switch 1 operation power relay Heating 16 18 7 Indoor heat exchanger Defrosting signal a C 24 26 7 thermistor temperature Preheating signal 32 34 7 Ti Fan relay H n 5 Fan relay L Differential 0 33 Fan relay 5 am Fan relay H Powerrelay 2880 gt Stick
31. and Stop are repeated according to the thermostat signal and time o Not accepted during hot keep 5 during compressor stop during Low temperature input Only circulation E B The operation mode at the defrosting and during forced with cut velocity is 1 When the set temperature is lower than the room xample for circulation mode start of operation differs as 8 3 minutes temperature executed independent shown below according to Fan relay H E ic y Accepted only during heatin 1 In case of Automatic mode 3 2 the room temperature gt pt y g 9 signal Temperature shift amount 2 S Stick relay operation 43 Set temperature Cooling D Eternal fatt relay Recovery at the time of stop by 1 Strong A 30sec 30 sec d oT Reversing fan relay low temperature input is reset Start stop button E Bs Sensor The set temperature 2 Start stop button 3 Fan relay 5 m sec 4 dehumidi shall be 2 degrees Timerrelay 11 recovery Fan relay H SgS fication below the room The timer lamp flashes at the Power relay 2 sec 2 temperature at the Start stop button Stick relay Start stop switch 8 time of sto Stick rela mmm FanrelayH co start of operation lt ANS 1 External fan relay Fan relay H Heating The set temperature 080804 05 05656589 TLR Fan relay L F lay L 1 sec Thermostat operation fa
32. and turn off the circuit breaker during cleaning the high speed fan inside the unit may cause danger Turn off the circuit breaker if the unit is not to be operated for a long period Q 8 e Do not climb on the outdoor unit or put objects on it e Do not put water container like vase on the indoor unit to avoid water dripping into the unit Dripping water will damage the insulator inside the unit and causes short circuit e When operating the unit with the door and windows opened the room humidity is always above 80 and with the air deflector facing down or moving automatically for a long period of time water will condense on the air deflector and drips down occasionally This will wet your furniture Therefore do not operate under such condition for a long time e 1 the amount of heat in the room is above the cooling or heating capability of the unit for example more people entering the room using heating equipments and etc the preset room temperature cannot be achieved NAMES AND FUNCTIONS OF EACH PART INDOOR UNIT Air filter To prevent dust from coming into the indoor unit Refer page 25 Front panel Indoor unit indicators Light indicator showing the operating condition Refer page 9 Horizontal deflector Vertical deflector Air Outlet Refer page 20 Remote controller Send
33. cates the setting AUTO The fan speed is HI at first and varies to MED or LOW automatically when the preset temperature has been reached lt Economical as the room will become warm quickly But you may feel a chill at the beginning MED Quiet LOW quiet Set the desired room temperature with the TEMPERATURE buttons the display indicates the setting The range of 18 22 C is recommended as the room temperature for heating If the temperature setting is 20 C the room temperature will be controlled at around 20 C HITACHI The temperature setting and the actual room temperature may vary somewhat depending on conditions START Press the START STOP button Heating operation starts STOP with a beep Press the button again to stop operation As the settings are stored in memory in the remote controller you only have to press the D START STOP button next time DEHUMIDIFYING OPERATION Use the device for dehumidifying when the room temperature is over 16 C When it is under 15 C the dehumidifying function will not work HITACHI Press the FUNCTION selector so that the display indicates DEHUMIDIFY The FAN SPEED is set at LOW automatically The FAN SPEED button does not work Set the desired room temperature with the TEMPERATURE button the display indicates the sett
34. change switch does not vary the fan speed P 2 temperature y cannot be controlled at automatic operation According to the room temperature cooling or dehumidifying operation is automatically selected 12 Cooling When room temperature is approx 27 C or higher Dehumidifying When room temperature is between approx 23 C and 27 C Heating When room temperature is approx 23 C or lower 2 The fan speed is automati V cally determined 3 a a It is automatically set as follows At cooling Set at 27 C At dehumidifying Set slightly lower than room temperature The room temperature setting can be raised 3 by A or lowered 3 C by V 51 When changing the room temperature setting in an automatic operation the next automatic operation mode is determined by new room temperature setting If for example the room temperature setting is 2 C lowered for example the operation mode is as follows Cooling When room temperature is approx 25 C or higher Dehumidifying When room temperature is between approx 21 C and 25 C Heating When room temperature is approx 21 C or V lower Common etc There is a difference between the room temperature setting and actual room temperature Q15 A What will happe
35. ciency falls When the outside heat exchanger is frosted the frost is melted by operating the hot gas system it is not trouble that at this time fan stops and the vapour may rise from the outside heat exchanger SPECIFICATIONS MODEL RAS 08KH2 RAS 10KH2 RAS 14KH2 RAC 08KH2 RAC 10KH2 RAC 14KH2 FAN MOTOR 20 W 20 W 30 W FAN MOTOR CAPACITOR NO 1 5uF 450 VAC 2 5uF 450VAC FAN MOTOR PROTECTOR NO NO COMPRESSOR 585080 5RS112 5RS132 COMPRESSOR MOTOR CAPACITOR 20uF 450 VAC 25uF 450 VAC OVERLOAD PROTECTOR YES OVERHEAT PROTECTOR NO FUSE for MICROPROCESSOR NO POWER RELAY NO POWER SWITCH NO TEMPORARY SWITCH NO SERVICE SWITCH NO TRANSFORMER NO VARISTOR NO FUSE CAPACITY TIME DELAY FUSE THERMOSTAT REMOTE CONTROL SWITCH LIQUID CRYSTAL REFRIGERANT CHARGING UNIT VOLUME Refrigerant 410A WITHOUT REFRIGERANT BECAUSE COUPLING IS FLARE TYPE MAX PIPES MODEL RAS 08KH2 RAC 08KH2 and RAS 10KH2 RAC 10KH2 Figure showing the installation of Indoor and Outdoor unit A The installation height of indoor unit must be 2 3m or more CAUTION ar above 100mm 2 300mm or more must not bend 9 45m above 300mm above The indoor piping should be insulated with the enclosed insulation pipe If the insulator is in
36. ctive container for carrying and storing of parts Even rejected goods should be handled in the same way A conductive polyvinyl bag IC Conductive sponge Fig 1 Conductive Container 2 When any part is handled uncovered in counting packing and the like the handling person must always use himself as a body earth Make yourself a body earth by passing one M ohm earth resistance through a ring or bracelet 3 Be careful not to touch the parts with your clothing when you hold a part even if a body earth is being taken 4 Be sure to place a part on a metal plate with grounding 5 Be careful not to fail to turn off power when you repair the printed circuit board At the same time try to repair the printed circuit board on a grounded metal plate Body earth Elimik conductive band 74 Clip for connection with 1MQ grounding wire Fig 2 Body Earth 6 Use a three wire type soldering iron including a grounding wire Metal plate of aluminium stainless steel etc Working table Resistor of 1 MQ 1 2W Staple le Earth wire Bare copper wire for body earth Fig 3 Grounding of the working table Soldering iron Grounding wire Screw stop at the screwed part using a rag plate Fig 4 Grounding a soldering iron Use a high insulation mode 100V 10MQ or higher when ordinary iron is to be used 7 In checking circuits for maintenance inspection or some others
37. d HI Economical as the room will become cool quickly MED Quiet LOW More quiet S Set the desired room temperature with the TEMPERATURE HITACHI button the display indicates the setting The range of 25 28 C is recommended as the room temperature for cooling If the temperature setting is 27 C the room temperature will be controlled at around 27 C The temperature setting and the actual room temperature may vary some how depending on conditions Press the START STOP button Cooling operation starts with a beep Press the button again to stop operation The START cooling function does not start if the temperature setting is higher than the current room temperature even though the STOP OPERATION lamp lights The cooling function will start as soon as you set the temperature below the current room temperature As the settings are stored in memory in the remote controller you only have to press the 0 START STOP button next time 20 16 FAN OPERATION You can use the device simply as an air circulator Use this function to dry the interior of the indoor unit at the end of summer ES HITACHI Press the FUNCTION selector so that the display indicates FAN Press the FAN SPEED button lt Press the START STOP button Fan operation starts with a beep Pre
38. d to the terminal which is marked with the letter L or coloured red NOTE If the supply cord is damaged it must be replaced by the special cord obtainable at authorized service parts centers CAUTION Cleaning and maintenance must be carried out only by qualified service personal Before cleaning stop operation and switch off the power supply REGULAR INSPECTION PLEASE CHECK THE FOLLOWING POINTS BY QUALIFIED SERVICE PERSONAL EITHER EVERY HALF YEARLY OR YEARLY CONTACT YOUR SALES AGENT OR SERVICE SHOP 1 Is the earth line disconnected broken 2 CO Is the mounting frame seriously affected by rust and is the 2 outdoor unit tilted or unstable Is the plug of power line firmly plugged into the socket 3 Please ensure no loose contact between them M 29 AFTER SALE SERVICE AND WARRANTY WHEN ASKING FOR SERVICE CHECK THE FOLLOWING POINTS CONDITION CHECK THE FOLLOWING POINTS e 15 the fuse all right e 5 the voltage extremely high or low e 5 the circuit breaker ON When it does not operate e Was the air filter cleaned e Does sunlight fall directly on the outdoor unit When it does not cool well e 15 the air flow of the outdoor unit obstructed e When it does not hot well Are the doors or windows opened or is there any source of heat in the room e 5 the set temperature suitable Notes e
39. e particular temperature automatically performs Cooling or Dehumidifying operation The value indicated not at an Automatic but manual operation is not the actual room temperature but the room temperature setting The current time disappears soon and the timer settting indication takes a precedence 53 When setting the current time its indication blinks for approximately 3 minutes In spite of timer Isn t the time over the pre the time setting is programmed time extinguished As soon as the prepro grammed time is reached the time setting disappears After selecting a At a Dehumidifying Dehumidifying operation operation the LO fan speed mode the fan speed mode is forcibly selected remains LO fan speed Q25 B4 TROUBLE SHOOTING C No cooling or heating 2 No operation at all 1 Before using the service switch 2 disengage and engage the plug Do not Operates by setting the service operate the remote controller switch to forced cooling a Check the following parts and replace if faulty N YES NO 1 Current fuse Remove and check the continuity across 1 1 2 Varistor Check whether the appearance is blackish not neturn the service switch to 3 Power switch The resistance must be infinite 2 Normal Check the continuity between co
40. entering the room using heating equipments and etc the preset room temperature cannot be achieved Not Operating For Long Time When the indoor unit is not to be used for a long period of time please switch off the power from the mains If the power from mains remains ON the indoor unit still consumes about 8W in the operation control circuit even if it is in OFF mode 7 When Lightning Occurs To protect the whole unit during lightning please stop operating the unit and remove the plug from the ONS socket A Warning IN Interference From Electrical Products an E lt gt lt gt Inverter type fluorescent lamp A Caution To avoid noise interference please place the indoor unit and its remote controller at least 1m away from electrical products interference place at least 1m away a ATTACHING THE AIR CLEANSING AND DEODORIZING FILTERS A CAUTION Cleaning and maintenance must be carried out only by qualified service personal Before cleaning stop operation and switch off the power supply 1 Open the front panel Pull up the front panel by holding it at both sides with both hands 2 Remove the filter Push upward to release the claws and pull out the filter 3 Attaching the air cleansing and deodori
41. eries when you do not use the remote controller for 2 or 3 months 23 THE IDEAL WAYS OF OPERATION Install curtain or blinds Suitable Room Temperature Warning Freezing temperature is bad for health and a waste of electric power It is possible to reduce heat entering the room through windows 9 2 Ventilation Effective Usage Of Timer At night please use the OFF or ON timer A Caution operation mode together with your wake up Do not close the room for a long period of time in the morning This will enable you to time Occasionally open the door and windows enjoy a comfortable room temperature Please to allow the use the timer effectively entrance of fresh air Do Not Forget To Clean The Air Filter Please Adjust Suitable Temperature Dusty air filter will reduce the air volume and For Baby And Children the cooling efficiency To prevent from wasting electric energy please clean the filter every 2 weeks a Please pay attention to the room temperature and air flow direction when operating the unit for baby children and old folks who have difficulty in movement 24 FOR USER S INFORMATION Conditioner The Heat Source Caution If the amount of heat the room is above the cooling capability of the air conditioner for example more people
42. et room temperature and the blowing velocity will be according to the remote control signal The same applies for switching from Cooling to Sensor dehumidifica tion The same also applies for Automatic sensor dehumidifica tion cooling Sensor dehumidifica tion Cooling The filter sign lights after operation of the indoor fan for 100 hours The time is cleared when power switch set to OFF and ON again After entry into trouble mode when the indication lamp is flashing the rapid feed mode can not be changed When operation nice temperature reservation is executed during sleep operation normal operation will be continued and the advance time becomes the temperature difference between the set temperature without sleep shift and the room temperature The 50 minutes of defrosting prohibition are counted from Thermostat ON after start stop switch ON When the thermostat is OFF at the time of start stop switch ON the 60 minutes will be counted from the time of thermostat ON The initial OFF time is not counted Counting starts when the thermostat becomes ON and the count then continues even if the thermostat becomes OFF In case of switching from Heating the reversing valve is held for 3 minutes The defrosting signal is not accepted with overload input and the operation becomes as shown below when the overload input disappears 1 When previously the defrosting signal ex
43. fying operation the actual room temperature is compared with the room tem perature setting when starting the operation and the opera tion is as follows 1 When actual room tem perature gt room tempera ture setting The operation is according to the room temperature setting on the remote con troller 2 When actual room tem perature lt room tempera ture setting Regardless of the room temperature setting the temperature is automati cally set slightly lower than the room temperature In this case the status is as 2 and therefore the operation by the room temperature control is impossible Turn off the On OFF switch set the room temperature to a new value and turn on the opera tion by the On Off switch amp This is the status in 2 of A4 The temperature is set a little lower than the room temperature to carry out a dehumidifying operation as far as possible If cooling is performance when the room temperature is low frost may stick on the heat exchanger of indoor unit Heating operation Air does not come out when Q6 starting a heating operation 27 It is not a trouble The fan is stopped to avoid cold wind When starting the operation the heat exchanger is cold and therefore the fan is stopped Wait 2 3 minutes Air does not come out sometimes while in a heating operation
44. g stop operation and switch off the power supply 1 AIR FILTER Clean the air filter as it removes dust inside the room In case the air filter is full of dust the air flow will decrease and the cooling capacity will be reduced Further noise may occur Be sure to clean the filter following the procedure below PROCEDURE 1 Open the front panel and remove the filter e Gently lift and remove the air cleansing and deodorizing filter from the air filter frame 2 Vacuum dust from the air filter and air cleansing and deodorizing filter using vacuum cleaner If there is too much dust rinse under running tap water and gently brush it with soft bristle brush 4 Allow filters to dry in shade 3 e Re insert the air cleansing and deodorizing filter to the filter frame Set the filter with FRONT mark facing front and slot them into the original state L e After attaching the filters push the front panel at three arrow portions as shown in figure and close it NOTE e Air cleansing and deodorizing filter should be cleaned every month or sooner if noticeable loading occurs When used overtime it may loose its deodorizing function For maximum performance it is recommended to replace it every 3 6 months depending on application requirements CAUTION e Do not wa
45. gt H as when thermo ON If cooling is selected during sensor dehumidification operation the operation continues as it is with the thermo ON The 3 minutes delay is not started The set temperature and fan speed depend on the remote control signal It is same for cooling sensor dehumidification It is same for AUTO sensor dehumidification cooling sensor dehumidification cooling The filter sign lights after 100 hours operation of the room fan The lamp goes out when the POWER SWITCH set to OFF and ON again After the failure mode is started indicator lamp flickering rapid mode changing cannot be done If the operation is made by the nice temperature reservation during the sleep operation the normal operation continuously occurs and for the advance time the temperature difference between the set temperature without sleep shift and room temperature is used REFRIGERANT CYCLE DIAGRAM MODEL RAS 08KH2 RAC 08KH2 COMP S TANK CONDENSER 1 1 fo i REVERSING 0 VALVE GO HEATING amp COOLING STRAINER CAPILLARY 2S VALVE AN CHARGING STRAINER PIPE MODEL RAS 10KH2 RAC 10KH2 S TANK
46. ing The range of 20 26 C is recommended as the room temperature for dehumidifying Press the START STOP button Dehumidifying operation starts with a beep Press the button again to stop operation 2 As the settings are stored in memory in the remote controller you only have to press the D START STOP button next time HITACHI Dehumidifying Function When the room temperature is higher than the temperature setting The device will dehumidify the room reducing the room temperature to the preset level When the room temperature is lower than the temperature setting Dehumidifying will be performed at the temperature setting slightly lower than the current room temperature regardless of the temperature setting The function will stop the indoor unit will stop emitting air as soon as the room temperature becomes lower than the setting temperature COOLING OPERATION Use the device for cooling when the outdoor temperature is 22 42 C If indoor humidity is very high over 80 some dew may form on the air outlet grille of the indoor unit HITACHI Press the FUNCTION selector so that the display indicates COOL Set the desired FAN SPEED with the FAN SPEED button the display indicates the setting AUTO The FAN SPEED is HI at first and varies to MED or LOW automatically when the preset temperature has been reache
47. isted without overload input defrosting will start immediately 2 In cases other than the above defrosting will be executed with a defrosting signal in the condition without overload input 40 NICE TEMPERA TURE reservation e Operation starts in advance so that the room temperature reaches the preset value at the set time e The operation time is obtained as follows depending on the room temperature when operation starts 1 Calculation method of the moved up time Moved up time MT Moved up time depending on the temperature difference OT compensation time HT MT is at least 1 minute if OT is not zero Heating Cooling MT 00 60 min 00 60 min OT 00 60 min 00 60 min HT 60 60 min 60 60 min Obtain OT moved up time depending on the temperature difference from the table below Heating Cooling Setting temp Room temp Time min Setting temp Room temp Time min 00 01 00 00 0000 02 00 00 0125 03 00 10 0225 05 00 15 03 25 07 00 20 05 25 08 00 30 0725 10 00 30 08 25 11 00 45 10 25 13 00 40 1125 60 13 25 16 00 50 16 25 19 00 60 1925 22 00 60 22 25 The preset temperature value shown above does not include any shift value 2 Compensation 1 The Attained state is monitored and a Not attained check is done to revise the compensatio
48. ll be 2 C Cooling controlled 2 C above the temperature and the FAN En SPEED will be set to LOW setting 60 minutes after the Sleep a a setting of the sleep timer timer set 2 hours 7 hours later dehumidifying later 60 minutes later hours later Fan The settings of room temperature and circulation are varied T e or current time is not set sleep timer can not be set e f you set the sleep timer after the off on off or off on timer has been set the sleep timer becomes effective instead of the off on off or off on timer set earlier e You can not set other timer during sleep timer operation e After sleep timer time is up and when press sleep button again the sleep timer will be set as last setting e Sleep timer effective only once 21 ADJUSTING THE AIR DEFLECTOR Adjustment of the conditioned air in the upward and downward directions The horizontal air deflector is automatically set to the proper angle suitable for each operation The deflector can be swung up and down continuously and also set to the desired angle using the AUTO SWING button e If the AUTO SWING button is pressed once the horizontal air deflector swings up and down If the button is pressed again the deflector stops in its current position Several seconds about 6 seconds may be required before
49. min by means of the start stop switch or at the time of OFF timer count up time defrosting is executed before operation stop The defrosting signal 15 not accepted at the time of overload input Other detailed specifications 1 When the room temperature rises within 3 minutes after thermostat OFF during cooling operation with automatic velocity the blowing velocity changes in the order of gt gt gt Hin the same way at the time of thermostat ON In case of Tele control input during stopped ON timer operation will be started at that time and the timer will be cleared In case of Tele control input during operation of the OFF timer the operation will be stopped at that time and the timer will be cleared Even when operation stop is executed at the time of outside fan OFF by overload automatic fresh defrosting will not be executed In case of switching to Heating during Automatic heating operation the operation will be continued as it is when the thermostat is ON 3 min delay will not be entered However the set room temperature and the blowing velocity will be according to the remote control signal The same applies for switching from Heating to Automatic heating In case of switching from Sensor dehumidification operation to Cooling as it is when the thermostat is ON 3 min delay will not be entered However the s
50. n if the time setting is changed while in a timer operation 0 Nice temperature reservation In the Automatic fan speed y mode the indoor fan changes to MED and LO fan speed account structure If there is a difference from the room temperature adjust the set temperature to keep living space at a comfortable temperature There may be a difference Y between temperature setting and actual room temperature on the room of the air flow etc room changing A timer performed until the time after is operation the time setting operates It is not a trouble The cold wind preventive function Set the temporary switch normal A In case of ON timer the operation does not start at a preprogrammed time but a little earlier The time to start an operation is irregular while preprogramming at the same time 52 The Nice temperature reservation functions The operation starts earlier so the room temperature will be as set at a programmed time The operation starts at most 60 minutes before a preprogrammed time The Nice temperature reservation operates The starting time depends on the room load Wireless remote controller Q20 1 When the Automatic operation mode is selected Automatic does not change by pressi
51. n off time is 2 38 a m N Sleep The device will be turned off by the sleep timer timer and turned on by on timer 1 Set the ON timer I Z pes the SLEEP button and set the sleep timer aM fe TYE Example i In this case the device will turn off Lu i in 2 hours at 1 38 a m and turn on early so that the preset 1 temperature will be almost reached l 6 00 next morning How to Cancel Reservation Point the signal window of the remote controller toward the indoor unit and press the CANCEL button The 6 RESERVED sign goes out with beep and the TIMER lamp turns off on the indoor unit _ 20 Explanation of the sleep timer The device will control the FAN SPEED and room temperature automatically so as to be quiet and good for people s health You can set the sleep timer to turn off after 1 2 3 or 7 hours The FAN SPEED and room temperature will be controlled as shown below Operation with the sleep timer Function Operation The room temperature will be 5 C controlled 5 C below the 4 Heating temperature and the FAN SPEED will be set to LOW setting 60 minutes after the z 7 hours setting of the sleep timer 2 hours later 60 minutes later later 3 hours later The room temperature wi
52. n time HT Attained monitor Continuously monitored during NICE TEMPERATURE operation r Heating When the room temperature Set value compensation shift it is regarded to be attained and 5 minutes are reduced from the compensation time r Cooling When the room temperature lt Set value compensation shift it s operated same as above Not attained check Performed once when the NICE TEMPERATURE timer is completed r Heating When the room temperature lt Set value compensation shift 1 C it is regarded to be Not attained and 5 minutes are added to the compensation time r Cooling When the room temperature gt Set value compensation shift 1 C it s operated same as above 3 If the room temperature is within 1 C from the set value compensation shift compensation is not done e The air deflector control operation shown below is done when the swing switch is pressed or when the operation mode is changed e The air deflector control operation shown below is done when the operation switch is turned off I Specification em 3 way AUTO Swing Cooling 90 in down direction 7 dehumidi Up 63 in up direction fying N Up Down
53. ng the fan speed select button The room temperature setting is not displayed Pressing the room temperature control button develops transmit mark and sounds receive sound but does not display the room temperature setting When the room temperature setting is 16 pressing the room temperature control button V causes no transmission At 32 pressing causes transmission either The timer cannot be set The current time disap pears soon 2 When the operation mode is Automatic the fan speed is automatically fixed to Automatic At Automatic operation the room temperature setting is not displayed The room temperature is automatically set as follows Set at 27 C At dehumidifying Set to a temperature slightly lower than the room temperature At heating Set at 23 C At Automatic operation the room temperature setting is not displayed However every pressing A or V button changes 1 C within the range of 27 3 when cooling 23 3 when heating The room temperature is settable within the range of 16 32 and not beyond Is the current time set The timer cannot be set unless the clock is adjusted correctly f The room temperature sensing thermistor in the indoor unit detects the room temperature and according to th
54. nit and the outdoor unit should be within 5m Power supply cord length is about 2m Connecting cable 2 5mm dia x 3 AB Line 1 6mm dia x 2 CD Line is used for the connection f og ROI V deflector 22 Line cord Indoor Unit Outdoor Unit L E N C onnecting RED n cora BRN D 1 1 MODEL RAC 08KH2 10 2 4 700 570 157 gt Viewed from MODEL RAC 14KH2 E rv 3 4 340 l9 428 P 482 Y 2 Air outlet Annig Ir 852 750 76 16 280 5 26 1 6 K 1 8 e 1 19
55. ntacts 4 Thermal fuse for 96 C Continuity across If there is no continuity therminal board also check the fan motor and capacitor F 5 Thermal fuse for 102 C Continuity across If there is no continuity Terminal board check the electric parts and replace if abnormal Set the remote controller to an operation status and press the ON 2 Before checking the varistor detach a terminal OFF button Q relay and OV Is the level LO approx 0 5V between driver 10701 pin power 2 relay abnormal Replace Power relay 6 YES Compressor does not turn at LO relay and OV Is the level LO approx 0 5V panoan caver 10704 stick c relay abnormal Replace Stick relay YES a Is voltage normal between Blue and Red of the CN6 3 Indoor fan motor or Q904 abnormal YES lt 9 Is the level LO approx 0 5V between driver IC 701 pin 3 Reversing valve Replace Reversing Reversing valve relay and OV at relay abnormal valve relay heating operation YES 27552 Is voltage normal approx 280 300V at out put side of the DB201 Ta Check the circuit board inside parts When checking carry out a self diagnosis by indoor indicator lamp Check the circuit board of control board YES
56. om temperature turn on and off the disconnect switch To protect the compressor wait at least 3 minutes before turning on again e The fan speed is e Does not operate is 12V is not generated in the control circuit e When the service switch is used for operation each change switch is overridden e Setting the service switch to Cooling turns on the Stick relay and Power relay AUTO SWING FUNCTION INPUT SIGNAL PRESENT CONDITION OPERATION OPERATION MODE AIR DEFLECTOR OPERATING SPECIFICATION REFERENCE KEY INPUT EACH MODE STOP ONE SWING CLOSING AIR DEFLECTOR DOWNWARD 0 UPWARD INITIALIZE AT NEXT OPERATION DURING ONE SWING STOP AT THE MOMENT DURING OPERATION AUTO COOL COOL FAN AUTO DRY DRY START SWINGING DOWNWARD UPWARD DOWNWARD DURING SWINGING STOP AT THE MOMENT CIRCULATOR START SWINGING DOWNWARD UPWARD DOWNWARD DURING SWINGING STOP AT THE MOMENT INTERNAL FAN ON THERMO ON INTERNAL FAN OFF THERMO OFF DURING OPERATION AUTO DRY DRY CIRCULATOR TEMPORARY STOP START SWING AGAIN DURING SWINGING STOP SWINGING TEMPORARILY SWING MODE IS CLEARED IF SWING COMMAND IS TRANSMITTED DURING TEMPORARY STOP MAIN SWITCH ON COOL FAN DRY STOP DURING ONE SWING INITIALIZE DOWNWARD 0 UPWARD CIRCULATOR STOP DURING ONE SWING INITIALIZE DO
57. oom temperature 30 sec 5 5 L by V 3 C is possible with Fan Speed 5 5sec after operation start minus Automatic L XL At this time the operation mode 5 2 2 2 the set judgement temperature also is ae temperature Notes shifted at the same time is 16 C or lower 16 C The min ON time of the power relay is 3 minutes and the min OFF time However correction is possible becomes the set temperature also is 3 minutes only in cooling operation mode Operation lamp The other operations are the n automatic circulation mode HI in section B occurs only the first time but not in Sensor dehumidifica same as for 1 tion mode _ 39 Operation mode UE Cooling Sensor dehumidification Heating Automatic Control function Sleep operation is executed 5 deg d Set circulation velocity LO sleep operation Set T leg down for each operati on mode
58. puter bi 2 AX 3U 2 Lo 25 26 RES 512 2 55 ig 22 ME 9 oV OV eae DC12V Line DC5V Line 1 POWER OFF Micro computer Pin 69 5V i e The reset circuit is used to reset the program to its initial settings when the power is turned on or when the power is recovered after a power failure e The micro computer is reset when the reset input is and operation is possible when the reset input is Lo e The waveforms at each point when the power is turned on and off are shown in the diagrams e When the power is turned on the voltages of the DC 12V line and DC 5V lines are increased When the voltage of DC 12V lines reaches about 7V ZD511 is turned ON the potential of Q511 s base rises and Q511 is turned ON Since Q511 s collector is set to LO at this time Q512 is turned OFF and the reset input of the micro computer is set to Lo The DC 5V line voltage has already become 5V at this time and the micro computer starts operation e When the power is turned OFF the voltage of the DC 12V line decreases When it becomes about 7V ZD511 is turned OFF then Q511 is turned OFF Q512 is turned ON the reset input of the micro computer is set to and the micro computer is set to the reset mode 45 3 Buzzer Circuit 12V BZ1 AX 3U pisces Q30
59. r has been changed conspicuously replace the compressor 2434 WIRING DIAGRAM MODEL RAS 08 10 14KH2 RAC 08 10 14KH2 BUILT IN TEMPERATURE WIRING DIAGRAM AC m FUSE 102 C CONNECTING E WIRING 501 BLUE ORANGE SWITCH R ORANGE BROWN 17 72 BROWN COMPRESSOR l LIE CLA DIAGRAM MER PROTECTOR N 3 oo Bib Eos i POWER RELAY 4 GREEN amp WHITE YELLOW REVERSING VAVLE RELAY ij WHITE COMPRESSOR 3 15A FUSE TERMINAL el e L BOARD x SURGE VARISTORI 4 EARTH 2 CONNECTING FAN MOTOR GREEN ABSORBER Fle gt 0080 2 CAPACITOR 4 JE TERMINALBOARD 22 FAN MOTOR l VARISTOR 2 5 INDOOR ROOM POWER P W B 4 TEMPERATURE _ L THERMISTOR _ 5 LINES 4 LINES INDOOR 1 m ie z 1294 M ON 1 FAN MOTOR YELLOW RECEIVER P W B 2 18 jj o GRAY 010 WIRELESS REMOTE 2114 STEPPING a CONTROLLER HEAT EXCHANGER MAIN P W B 5 0 TERHMISTOR CN CIRCUIT
60. rosting will be performed about once every one hour when frost forms on the heat exchanger of the outdoor unit for 5 10 minutes each time TIMER LAMP This lamp lights when the timer is working Temporary Switch NL Non conductor Stick Press EN TEMPORARY SWITCH Coco Cc Coco Use this switch to start and stop when the remote controller does not work Use non conductor stick example toothpick e By pressing the temporary switch the operation is done in previously set operation mode e When the operation is done using the temporary switch after the power source is turned off and turn on again the operation is done in automatic mode zo NAMES AND FUNCTIONS OF REMOTE CONTROL UNIT REMOTE CONTROLLER This controls the operation of the indoor unit The range of control is about 7 meters If indoor lighting is controlled electronically the range of control may be shorter This unit can be fixed on a wall using the fixture provided Before fixing it make sure the indoor unit can be controlled from the remote controller e Handle the remote controller with care Dropping it or getting it wet may compromise its signal transmission capability e After new batteries are inserted into the remote controller the unit will initially require approximately 10 seconds to respond to commands and operate HI
61. rt a finger a rod or other objects into the air outlet or inlet As the fan is rotating at a high speed it will cause injury Before cleaning be sure to stop the operation and turn the breaker OFF e Do not use any conductor as fuse wire this could cause fatal accident 02 220 5 gt e 4 During thunder storm disconnect and turn off the circuit breaker PRECAUTIONS DURING OPERATION e The product shall be operated under the manufacturer specification and not for any other intended use Ni e Do not attempt to operate the unit with wet hands this could cause fatal accident e When operating the unit with burning equipments regularly ventilate the room to avoid oxygen insufficiency e Do not direct the cool air coming out from the air conditioner panel to face household heating apparatus as this may affect the working of apparatus such as the electric kettle oven etc e Please ensure that outdoor mounting frame is always stable firm and without defect If not the outdoor unit may collapse and cause danger e Do not splash or direct water to the body of the unit when cleaning it as this may cause short circuit e Do not use any aerosol or hair sprays near the indoor unit This chemical can adhere on heat exchanger fin and blocked the evaporation water flow to drain pan The water will drop on tangential fan and cause water splashing out from indoor unit e Please switch off the unit
62. sh with hot water at more than 40 The filter may shrink e When washing it shake off moisture completely and dry it in the shade do not expose it directly to the sun The filter may shrink e Do not use detergent on the air cleansing and deodorizing filter as some detergent may deteriorate the filter electrostatic performance 2 Washable Front Panel Remove the front panel and wash with clean water Wash it with a soft sponge After using neutral detergent wash thoroughly with clean water When front panel is not removed wipe it with a soft dry cloth Wipe the remote controller thoroughly with a soft dry cloth Wipe the water thoroughly If water remains at indicators or signal receiver of indoor unit it causes trouble Method of removing the front panel Be sure to hold the front panel with both hands to detach and attach it Removing the Front Panel When the front panel is fully opened with both hands push the right arm to the inside to release it and while closing the front panel Move the projections of the left and right arms into the Flanges in the unit and securely insert them into the holes slightly put it out forward A CAUTION Do not splash or direct water to the body of the unit when cleaning it as this may cause short circuit
63. ss the button again to stop operation FAN SPEED AUTO When the AUTO fan speed mode is set in the cooling heating operation The fan speed will automatically change according to the temperature of discharged air When the difference of room temperature and setting temperature is large fan starts to run at HI speed When the room temperature reaches setting temperature fan speed changes to LOW automatically For the heating operation When the difference of room temperature and setting temperature is large fan starts to run at HI speed For the cooling operation After room temperature reaches the preset temperature the cooling operation which changes the fan speed and room temperature to obtain optimum conditions for natural healthful cooling will be performed cq HOW TO SET THE TIMER Time Day Month 1 Set the current month and TIME DAY After you change the day with the TIMER control MONTH batteries button current time day month 3 c5 Nur siz siz 2 OFF TIMER ON TIMER 1 Press the OFF TIMER button The OFF mark blinks RESERVE on the display CANCEL One 108 4 o 0 You can set the device to turn off at the present time button the ON mark blinks on the display on time One dew Zens e The device will turn on at the designated times
64. sufficient please use commersial products Maximum pipe length 10m Minimum pipe length 5m 25 above 200mm e The difference in height between the indoor and outdoor unit should be kept max 5m The connecting pipe no give clearance matter big or small should as wide as possible all be insulated with insulation pipe and then wrapped with vinyl tape The insulator will deteriorate if it is not wrapped with tape E F is above 50mm when installed on the above 100mm ceiling of balcony 7247 above 100mm CUT XS aw p amp gt lt 27 The connection of insulated above 300mm RY drain hose M above 200mm inner diameter 16mm Please use insulated drain hose for the indoor piping commercial product MODEL 14 2 RAC 14KH2 Figure showing the installation of Indoor and Outdoor unit A The installation height of indoor unit must be 2 3m or more CAUTION 50 at me jb E 5 2 13 2 gy 214 g jo 5 2 55 2 ja 5 The indoor piping should be 2 insulated with the enclosed Sle is insufficient please use commersial products above 200mm e The difference in height between the indoor and outdoor unit should be kept w wW wW wW w
65. the deflector starts to move Use the horizontal air deflector within the adjusting range shown on the right When the operation is stopped the horizontal air deflector moves and stops at the position where the air outlet closes A CAUTION In Cooling operation do not keep the horizontal air deflector swinging for a long time Some dew may form on the horizontal air deflector and dew may drop Adjustment of the conditioned air to the left and right Hold the vertical air deflector as shown in the figure and adjust the conditioned air to the left and right When cooling dehumidifying Vertical about 15 about 60 When heating Vertical about 45 A CAUTION occasionally This will wet your furniture When operating the unit in cooling operation with the air deflector facing down and moving automatically for a long period of time water will condensed on the air deflector and drips down 22 HOW EXCHANGE THE BATTERIES IN THE REMOTE CONTROLLER old batteries 1 Remove the cover as shown in the figure and take 2 pulliotiis direction of arrow v 2 Install the new batteries The direction of the batteries should match the marks in the NV case E CAUTION 1 Do not use new and old batteries or different kinds of batteries together 2 Take out the batt
66. uit or fire may occur if you reconstruct the unit by yourself A Please ask your sales agent or qualified technician for the installation of your unit Water leakage short circuit or fire may occur if you install WARNING the unit by yourself e Please use earth line Do not place the earth line near water or gas pipes lightning conductor or the earth line of telephone Improper installation of earth line may cause electric shock e A circuit breaker should be installed depending on the mounting site of A the unit Without a circuit breaker the danger of electric shock exists e Do not install the unit near a location where there is flammable gas CAUTION The outdoor unit may catch fire if flammable gas leaks around it Please ensure smooth flow of water when installing the drain hose e Should abnormal situation arises like burning smell please stop operating the unit and turn off the circuit breaker Contact your agent Fault short circuit or fire may occur if you continue to operate the unit under abnormal situation e Please contact your agent for maintenance Improper self maintenance may cause electric shock and fire e Please contact your agent if you need to remove and reinstall the unit Electric shock or fire may occur if you remove and reinstall the unit yourself improperly PRECAUTIONS DURING OPERATION e Avoid an extended period of direct air flow for your health e Do not inse
67. w w 5 insulation pipe If the insulator w w w w ow w w w w w w w w w w w above 50mm when EET 100 max Sm The connecting pipe no give clearance as matter big or small should 2 11096 as possible all be insulated with 185 insulation pipe and then wrapped with vinyl tape The mg insulator will deteriorate if it above 100mm is not wrapped with tape The connection of insulated drain hose above 700mm inner diameter 16mm Please use insulated drain hose for the indoor piping commercial product SAFETY PRECAUTION Please read the Safety Precaution carefully before operating the unit to ensure correct usage of the unit Pay special attention to signs of Warning and Caution The Warning section contains matters which if not observed strictly may cause death or serious injury The Caution section contains matters which may result in serious consequences if not observed properly Please observe all instructions strictly to ensure safety The sign indicate the following meanings e Make sure to connect earth line The sign in the figure indicates prohibition Q Indicates the instructions that must be followed Please keep this manual after reading PRECAUTIONS DURING INSTALLATION Do not reconstruct the unit Water leakage fault short circ
68. xample The device will turn off at 10 30 p m and then automatically turn on earlier so that the preset temperature can be reached at 7 00 a m The settings of the turn on off times are now complete The time indication will disappear To check the current time setting e The timer may be used in three ways off timer on timer and ON OFF OFF ON timer Set the current time at first because it serves as a reference e As the time settings are stored in memory in the remote controller you only have to press the RESERVE button in order to use the same settings next time 19 HOW SET THE SLEEP TIMER Set the current time at first if it is not set before 566 the pages for setting the current time Press the SLEEP button and the display changes as shown below HITACHI Mode Indication Sleep timer hour 2 hours 3 hours 7 hours Sleep timer off J di N Sleep Timer The device will continue working for the designated number of hours and then turn off SLEEP Point the signal window of the remote controller toward the indoor unit and press the SLEEP button The timer information will be displayed on the remote controller The TIMER lamp lights with a beep from the indoor unit When the sleep timer has been set the display indicates the turn off time Example If you set 3 hours sleep 2 8 time at 11 38 p m the tur
69. zing filters to the filter Attach the air cleansing and deodorizing filters to the frame by gently compress its both sides and release after insertion into filter frame A CAUTION Do not bend the air cleansing and deodorizing filter as it may cause damage to the structure 4 Attach the filters e Attach the filters by ensuring that the surface written FRONT is facing front e After attaching the filters push the front panel at three arrow portion as shown in figure and close it NOTE In case of removing the air cleansing and deodorizing filters please follow the above procedures The cooling capacity is slightly weakened and the cooling speed becomes slower when the air cleansing and deodorizing filters are used So set the fan speed to HIGH when using it in this condition e Air cleansing and deodorizing filters are washable and reusable up to 20 times by using vacuum cleaner or water rinse under running tap water Type number for this air cleansing filter is lt SPX CFH11 gt Please use this number for ordering when you want to renew it Do not operate the air conditioner without filter Dust may enter the air conditioner and fault may occur _ 26 MAINTENANCE A CAUTION Cleaning and maintenance must be carried out only by qualified service personal Before cleanin

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