SERVICE Manual SPLIT TYPE AIR CONDITIONER Indoor Unit AS18A9(0)RCF AS18A9(0)RCFD AS24A1(2)RC AS24A1(2)RCD

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1 AS8A9(0)RCF SM_E_5775 3/0/05 7:6 PM Page 43 SERVICE Manual SPLIT TYPE AIR CONDITIONER Indoor Unit AS8A9(0)RCF AS8A9(0)RCFD AS24A(2)RC AS24A(2)RCD Outdoor Unit US8A9(0)RCF US8A9(0)RCFD US24A(2)RC US24A(2)RCD E DB985775A(4)

2 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 2 Safety Precautions The following safety precautions must be taken when using your air conditioner. WARNING Risk of electric shock. Can cause injury or death. Disconnect all remote electric power supplies before servicing, installing or cleaning. This must be done by the manufacturer or its service agent or a similar qualified person in order to avoid a hazard. INSTALLING THE UNIT The unit should not be installed by the user. Ask the dealer or authorized company to install the units except room air conditioners for the U.S.A and Canada area. If the unit is installed improperly, water leakage, electric shock or fire may result. The air conditioner must be installed in accordance with national wiring regulations and safety regulations wherever applicable. Mount with the lowest moving parts at least 8.2ft(2.5m) above the floor or grade level. (If applicable) The manufacturer does not assume responsibility for accidents or injury caused by an incorrectly installed air conditioner. If you are unsure about installation, contact an installation specialist. When installing the builtin type air conditioner, keep all electrical cables such as the power cable and the connection cord in pipe, ducts, cable channels e.t.c to protect them against liquids, outside impacts and so on. POWER SUPPLY LINE, FUSE OR CIRCUIT BREAKER If the power cord of this air conditioner is damaged, it must be replaced by the manufacturer, its service agent or similarly qualified persons in order to avoid a hazard. The unit must be plugged into an independent circuit if applicable or connect the power cable to the auxiliary circuit breaker. An all pole disconnection from the power supply must be incorporated in the fixed wiring with a contact opening of >3mm. Do not use an extension cord with this product. If the unit is equipped with a power supply cord and a plug, the plug must be accessible after installation. This appliance must be installed accordance with the national wiring regulations. 2

3 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 3 Contents DISASSEMBLE AND REASSEMBLE. Indoor unit 2. Outdoor unit 4 8 Ι SET UP THE OPTION CODE 2 ΙΙ TROUBLESHOOTING. Items to be checked first 2. Abnormal diagnosis by symptom 3. Replace PCB module ΙΙΙ ASSEMBLY DRAWING AND PART S LIST. Indoor unit 2. Outdoor unit 3. PCB Box ΙΛ REFRIGERATING CYCLE BLOCK DIAGRAM 29 Λ PERFORMANCE CURVE 30 ΛΙ PCB DIAGRAM ΛΙΙ. Main PCB 36 ΛΙΙΙ WIRING DIAGRAM. Indoor unit 2. Outdoor unit SCHEMATIC DIAGRAM. Indoor unit 40 ΙΧ SPLIT TYPE AIR CONDITIONER 3

4 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 4 Ι Disassemble and reassemble Stop operation of the air conditioner and remove the power cable before repairing the unit. Indoor unit If you disassemble the heat exchanger, you must pump down at first. No. Part Procedure Remark Front Panel ) Stop the operation of the air conditioner and block the main power. 2) Separate the tape from the front panel. 3) Contract the second finger to the left, and right handle. And pull the inlet grille to open. 4) Take the left and right filter out. *Taking off the deodorizing and Electrostatic filter out. (Option) 5) Loosen one of the right screw and separate the terminal cover. 6) Loosen three screws of front grille. 4

5 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 5 No. Part Procedure Remark 7) Pull the upper left and right of discharge softly so that the outside cover is pulled out. 8) Pull softly the lower part of discharge and push it up. Caution Assemble the front panel and fix the hooks of left and right. 2 Assembly Tray ) Separate the drain hose from the Drain extension drain hose. 2) Take the display PCB out. (Center of the indoor unit) 3) Pull tray drain out from the back body. 5

6 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 6 Ι Disassemble and reassemble (Continued) No. Part Procedure Remark 3 Electrical Parts (Main PCB) ) Take out all the connector of PCB on the upper part. 2) Separate the outdoor unit connection wire from the terminal block. 3) If you pull out the main PCB up, it will be taken out. 4 Heat Exchanger ) Loosen two ground screws at the right side. 2) Separate the connection pipe. 3) Separate the bush body at the upper side and holder at the rear side. 4) Loosen the two screws at the left side. 5) Lift the heat exchanger up a little to push the upper side to separate it from the indoor unit. 6

7 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 7 No. Part Procedure Remark 5 Fan Motor and ) Loosen two screws and separate the Cross Fan motor holder. 2) Loosen the screw of fan motor. (By use of M3 wrench) 3) Separate the fan motor from the fan. 4) Separate the fan from the left holder bearing. 7

8 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 8 Ι Disassemble and reassemble (Continued) 2 Outdoor unit US8A9(0)RCF/US8A9(0)RCFD The designs and shape are subject to change according to the model. No. Part Procedure Remark Common Work ) Loosen the fixing screws and separate the cover control. 2) Separate the connection wire from the terminal block. 3) Loosen the fixing screws and separate the upper cabinet. 4) Loosen the fixing screws and separate the front cabinet. 5) Loosen two screws and pull up the control box. 6) Loosen the nut on the terminal cover and open it. 7) Separate the comp lead wire. 8

9 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 9 No. Part Procedure Remark 8) Loosen the fixing screws and separate the cabinet side. [US8A9(0)RCF] Loosen the fixing screws and separate the cabinet side LF and RH. [US8A9(0)RCFD] 2 Fan and Motor ) Remove the nut flange (Turn to the clockwise). 2) Separate the fan. 3) Loosen four screws to separate the motor. 3 Heat Exchanger and compressor ) Release the refrigerant at first. 2) Disassemble the inlet and outlet pipe by welding. 3) Loosen the fixing screws of the heat exchanger. 4) Separate the heat exchanger. 5) Loosen three bolts of the compressor. 6) Separate the compressor. 9

10 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 0 Ι Disassemble and reassemble (Continued) US24A(2)RC/US24A(2)RCD The designs and shape are subject to change according to the model. No. Part Procedure Remark Common Work ) Loosen the fixing screws and separate the cover control. 2) Separate the connection wire from the terminal block. 3) Loosen the fixing screws and separate the upper cabinet. 4) Loosen the fixing screws and separate the front cabinet. 5) Loosen three screws and pull up the control box. 6) Separate the terminal cover and separate the comp lead wire. 0

11 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page No. Part Procedure Remark 7) Loosen the fixing screws and separate the cabinet side. [US24A(2)RC] Loosen the fixing screws and separate the cabinet side LF and RH. [US24A(2)RCD] 2 Fan and Motor ) Loosen the fixing bolt and separate the fan. 2) Loosen four fixing bolts to separate the motor. 3 Heat Exchanger and compressor ) Release the refrigerant at first. 2) Disassemble the inlet and outlet pipe by welding. 3) Loosen the fixing screws of the heat exchanger. 4) Separate the heat exchanger. 5) Loosen four bolts of the compressor. 6) Separate the compressor.

12 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 2 ΙΙ Set up the option code The method for setting up the model option with the remote control It is necessary to set up option codes after replacing the main PCB with service parts. Make sure that you can set up option codes of the remote control after replacing the main PBA. Otherwise, the unit won t be working properly and all LED lamps on display will be flickering. Step Preparing for the remote control to the main PCB option set.. Remove the battery from the remote control. 2. Press the temperature button simultaneously and insert the battery again. 3. Make sure the remote control display shown as. Step 2 Preparing for the remote control option set. Note In case that the wrong letter has been selected; continue to press the button until the correct letter appears.. If the number appears on the display, proceed to the second stage. 2. Every time you press the ) and 7) button, and continue to appear. 3. Every time you press the 2), 3), 4), 5), 6), 8), 9), 0), ), 2) button, the number increases from ~ (,,,,,,,,, ) and,,,,, in order. ) If the first number is, it is correct. Otherwise, press the button until appears. 2) When pressing the button ~ on the display, select one of them. 3) When pressing the button ~ on the display, select one of them. 4) When pressing the button ~ on the display, select one of them. 5) When pressing the button ~ on the display, select one of them. 6) When pressing the button ~ on the display, select one of them. 2

13 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 3 7) If the first number is, it is correct. Otherwise, press the button until appears. 8) When pressing the button ~ on the display, select one of them. 9) When pressing the button ~ on the display, select one of them. 0) When pressing the button ~ on the display, select one of them. ) When pressing the button ~ on the display, select one of them. 2) When pressing the button ~ on the display, select one of them. Step 3 Reconfirming the option set after completing Example : b7 Press the button for the mode and the display will be shown as. Press the button for the mode and the display will be shown as. Step 4 Pressing the (On/Off) button When pressing the (On/Off) button in the direction of the remote control for unit, it sounds beep or ringing and the first LED(STANDARD) lamp on the left side is flickering at the same time, then the input option is completed. If it doesn t sound ringing, try again by pressing the (On/Off) button. Step 5 Testing the unit Remove the battery from the remote control. 2. Insert the battery into the remote control. 3. Press the (On/Off) button in the direction of the remote control for set. Note Error mode. If all lamps of the indoor units are flickering, plug out and in again and press the (On/Off) button again. 2. If the unit doesn t work properly or all lamps are continuously flickering after setting the option code, check that the option code is set properly for its own model. 3

14 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 4 ΙΙ Set up the option code (Continued) A table of the option code Model AS8A9RCF/ AS8A9RCFD AS8A0RCF/ AS8A0RCF D AS24ARC/ AS24ARC D AS24A2RC/ AS24A2RC D Option code 09000A A A A0340 4

15 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 5 ΙΙΙ Troubleshooting Items to be checked first ) The input voltage should be voltage rating within ±0% range. The air conditioner may not operate properly if the voltage is out of this range. 2) Is the connection cable linking the indoor unit and the outdoor unit properly? The indoor unit and the outdoor unit shall be linked by six cables. Check the terminals if the indoor unit and outdoor unit are properly linked by the same number of cables. Otherwise the air conditioner may not operate properly. 3) When a problem occurs due to the contents illustrated in the table below, it is not a symptom related to the malfunction of the air conditioner. No. Operation of air conditioner Explanation The STD operation indicator, LED blinks when a It indicates power is on. The LED stops blinking if the power plug of the indoor unit is plugged in at first. operation On/Off button on the remote control is pushed In the Cool mode, the compressor does not operate at a room temperature higher than the setting temperature while the indoor fan operates. The Fan speed operating is not allowed in the Auto or Dry mode. Compressor stops operating intermittently in the Dry mode. The compressor stops intermittently in the Cool or Dry mode, and the fan speed of the indoor unit decreases. It happens after three minutes when the compressor is reoperated. The same phenomenon occurs when a power is on. As a phenomenon that the compressor is reoperated after three minutes, the indoor fan is adjusted automatically with reference to a temperature of the air. The speed of the indoor fan is set to LL in the Dry mode. The Fan speed is five steps are selected automatically in the Auto mode. The compressor is controlled automatically in the Dry mode depending on the room temperature and humidity. The compressor stops intermittently or the fan speed of the indoor unit decreases to prevent inside/outside air from freezing depending on the inside/outside air temperature. 4) Indoor unit observes operation condition of the air conditioner and displays self diagnosis on the display panel Display STD LED blinking (Hz) TIMER LED blinking (Hz) STD and TIMER LED blinking (Hz) BIO LED blinking (Hz) STD, BIO and TIMER LED blinking(hz) All LED blinking(hz) Self Diagnosis Restore from power failure (input initial power) Indoor unit Room sensor Error (open or short) Indoor unit heat exchanger temperature sensor Error (open or short) Indoor fan malfunctioning (for spead is below 450rpm) EEPROM Error Option Error (Option error wasn t setup or option data error) 5

16 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 6 ΙΙΙ Troubleshooting (Continued) 2 Abnormal diagnosis by symptom. No Power Initial diagnosis ) Checklist : () Is input voltage normal? (voltage rating within ±0% range) (2) Is AC power linked correctly? (3) Are connections between primary side, secondary side of the power transformer and PCB good? (4) Is input voltage of DC regulator IC KA7805 (IC02) normal? (VDC2.5VDC) (5) Is output voltage of DC regulator IC KA7805 (IC02) normal? (4.5VDC5.5VDC) 2) Troubleshooting procedure Remove the power cord and plug it in again in approx. five seconds Replace PCB display Is DC voltage of PCB display normal? Is voltage rating within ±0% range applied to the between # and #3 of CN78 Check linkage between a power cord and a terminal tap Check fuse Does ~2.5VDC appear in the input side of the DC regulator ic ka7805(ic02)? Replace PCB module Refer to page 2 Replace resonator (X50) Is operation normal? OK Does the lamp blink? Does it start operating when you push the On/Off button on the remote control? Is transmission display of the remote control unit blinking? Does the beep sound from the main unit? Is DC voltage of the PCB module normal? Are voltages of #8 (IC04 : compressor), #6(IC04 INdoor fan) of Micom normal? : 5VDC is voltage of #60 (IC04 : indoor fan) of Micom normal? DC5V 0ms Is voltage of #33 terminal of Micom (IC04)normal? 0VDC Is voltage of #8 terminal of Micom (IC04)normal? 5VDC Is voltage of #52 terminal of Micom (IC04) normal? 0ms Are voltages of #48 and #49 of Micom (IC04)normal? Replace Micom 250ns Normal Refer to remote control unit abnormal diagnosis Replace the PCB module Refer to page 2 Are voltages of RY7(Compressor) and RY72(outdoor fan) normal? DC2V Is voltage of SS7(indoor fan)? OK Check connections of compressor outdoor fan and indoor fan Is output voltage of ICO2 normal? Replace PCB module Refer to page 2 Replace RY7, RY72 and SS7 Is voltage output terminal of D0~D05(IN4007) normal? Replace ICO2 Replace IN4007 6

17 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 7 2. When the Indoor Unit Fan Does Not Operate Initial Diagnosis ) Checklist : () Is the indoor unit fan motor properly connected with the connector (CN73)? (2) Is the AC voltage correct? (3) Is HALL IC in the indoor fan motor properly connected with the connector (CN43)? (4) Is the running capacitor properly connected with PCB board? 2) Troubleshooting procedure After unplugging out, the power cord should be reconnected within five seconds. Does the STD lamp(orange) blink? Check as the procedure No power Refer to page 6 Does the Solid State Relay(SS7) work properly? Micom is abnormal Test rod location + Normal Voltage SS7 SS7 2V Is the supply voltage of the fan motor sufficient? PCB is abnormal Replace the PCB module Refer to page2 PCB CN73 Test rod location Condition Normal voltage pin #3 and #5 Fan operate about AC 80V MFC is abnormal Replace MFC Fan motor is abnormal. Replace Fan motor 7

18 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 8 ΙΙΙ Troubleshooting (Continued) 3. When the Outdoor Unit Does Not Operate Initial Diagnosis ) Checklist : () Is input voltage normal? (voltage rating within ±0% range) (2) Is the set temperature of the remote control higher than room temperature in the Cool mode? (3) Is the POWER IN connector (CN78) linked correctly? (4) Is the outdoor unit properly connected with the terminal black connector(refer to page 5)? 2) Troubleshooting procedure After unplugging out, the power cord should be reconnected within five seconds. Does the STD lamp blink? Check as the procedure "No Power" Refer to page 6 Does the timer lamp blink during operation? Check PCB and room temperature sensor Room temperature sensor is abnormal. 2 Check PCB Is the power relay RY7 operated by adjusting the room temperature? 3 PCB is abnormal. Test rod location + Condition IC06 Pin #6 GND RY7 ON Normal Voltage DC 4.8V Replace the PCB module Refer to page 2 Is voltage rating within ±0% range applied relay between CN 78 and 3? Power relay is abnormal. Replace the Power relay Outdoor unit is abnormal. 2 Is the room sensor registered normal? 50 F(0 C) 68 F(20 C) 86 F(30 C) 7.96k Ω 2.09k Ω 8.3k Ω 3 8

19 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 9 4. When the UP/DOWN Louver Motor Does Not Operate Initial Diagnosis ) Checklist : () Is input voltage normal? (voltage rating within ±0% range) (2) Is the UP/DOWN louver motor properly connected with the connector (CN6)? 2) Troubleshooting procedure Remove the power cord and plug it in again in approx. five seconds Does the STD lamp blink? Does it start operating when you push the swing button of the remote control? Is voltage of # ~ #4 of Micom (ICO4) changed?(squarewave) Is voltage of pin#0, # IC05 (KID65003), #5 and #6 changed? (squarewave) The UP/DOWN louver motor is abnormal. Check as the procedure "No Power". Refer to page 6 Normal Micom (IC04) is abnormal. Driver IC06 (KID65003) is abnormal. 9

20 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 20 ΙΙΙ Troubleshooting (Continued) 5. When the remote control does not operate lnitial Diagnosis ) Troubleshooting procedure Remove the power cord and plug it in again approx. five Seconds Does the STD lamp blink? The melody sounds from the indoor unit when you push the On/Off button on the remote control. Check as the procedure No Power Refer to page6 Normal Is voltage of battery less than 2.5V (Remote Control Unit)? Is LCD display status of the remote control normal? Replace the battery LCD is abnormal. Does the transmission display lamp blink when you push the On/Off button on the remote control? Replace button Is voltage of #30 of remote control of Micom (IC04) changed? Is voltage at collector of Q60 or Q602 changed? Micom is abnormal. Q60(C4375Y) or Q602(C623Y) is abnormal. IR LED(CLL5EU) is abnormal. Is voltage of #26 of Micom (IC04) changed (Indoor unit)? Micom (IC04) is abnormal. Receiver module is abnormal. 20

21 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 2 3 Replace PCB module Remove the power cord Replace the PCB module Check the connection and plug in Does the display lamp blink or STD lamp blink? Replace another PCB module Refer to set up the option code 2

22 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 22 ΙΛ Assembly drawing and part s list Indoor unit 22

23 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 23 Part s List Q TY No. Code No. Description Specification AS8A9(0)RCF AS8A9(0)RCFD AS24A(2)RC AS24A(2)RCD DB640027A GRILLE AIR INLET HIPS 2 DB633050C GUARD AIR FILTER PP DB N CLEANER FILTER ASS Y 3 DB6064B CASECLEANER FILTER PP DB D CARBON FILTER POLTER/CARBON 33 DB D CLEANER FILTER POLTER/COTTON 4 DB630009A COVER TERMINAL ABS(V0) 5 DB640030A FRONT PANEL HIPS 6 DB93003C ASS Y PCB DISPLAY 6 DB63005A COVER DISPLAY ABC(BLK) 7 DB B ASS Y TRAY DRAIN ASS Y 7 DB3053B STEPPING MOTOR MP24S 72 DB660004A BLADEH ABS 8 DB96025B ASS Y EVAP PLATE.2(5/8 ) DB96025H ASS Y EVAP SLIT.5(/2 ) 9 DB A SPACEREVAP PVC 0 DB B ASS Y HOLDER MOTOR 0 DB60060A HOLDER MOTOR PP(Vo) 02 DB H TERMINAL BLOCK ASS Y 6P, 25A DB305D MOTOR FAN IN IIC9430SKF7A 2 DB J ASS YCROSS FAN ø95 x L 3 DB A RUBBER BEARING CR(BLK) 3 DB A BEARING MOTOR 4 DB930985A ASS Y MAIN PCB PDSH30ZC0 5 DB B ASS YTHERMISTOR 03AT / DKS03FW 6 DB6063A CASE CONTROL PP 7 DB940007A ASS Y BACK BODY HIPS 8 DB A ASS Y HOLDER PIPE 9 DB700663A PLATE HANGER SGCCM 20 DB A COVERTERMINAL BLOCK ABS 2 DB70005A PLATEKCKOUT SGCCM 22 DB930086A ASS Y REMOCON 23

24 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 24 ΙΛ Assembly drawing and part s list (Continued) 2 Outdoor unit US8A9(0)RCF/ US8A9(0)RCFD

25 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 25 Part s List No. Code No. Description Specification Q TY US8A9(0)RCF US8A9(0)RCFD DB K DB900877A DB902060H DB900753A DB A DB A DB300056D DB620008C DB940065A DB940065D DB960523C DB904076B DB90067L DB90083C DB900349A DB700087A DB90063D DB900878A 48D90IUEH DB A DB A DB603008A DB63065D DB960726A DB A DB B DB620396A DB960640B DB A DB P DB A DB B DB B DB L DB A DB630278A DB603000A DB603000C DB A DB950022C DB A DB60593A CABINETFRONT CABINETFRONT BASE OUT BASE OUT FANPROPELLER NUT FLANGE MOTOR FAN OUT BASEMOTOR PARTITION PARTITION COND UNIT COVER CONTROL CABINETBACK CABINETSIDE RH CABINETSIDE LF BARSTEEL CABINETUPPER CABINETUPPER COMPRESSOR GROMMET ISLATOR NUT WASHER NUT FLANGE COVERTERMINAL TUBE SUCTION TUBE SUCTION PACKED V/V /2" PACKED V/V /2" TUBE CAPILLARY TUBE CAPILLARY CONTROL OUT CONTROL OUT POWERRELAY CAPACITOR TERMINAL BLOCK SPARK KILLER SPARK KILLER FUSE MOTOR CAPACITOR CLOTH SOUND FELTCOMP SOUND NUT FLANGE /4" NUT FLANGE /2" TUBE DISCHARGE HEATER HEATER BRACKETVALVE AS+G/F20% M6LF ASS030ZTEC SGCCM PH, 208/230V, 60Hz NR, BRK M8 M5 PBT, BLK PTYPE UZ 2A BB220 25A 40uF/450VAC 8P/35A 2A,250V 2.5uF/450VAC C377BD C377BD 240V, 45W

26 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 26 ΙΛ Assembly drawing and part s list (Continued) US24A(2)RC/ US24A(2)RCD

27 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 27 Part s List No. Code No. Description Specification Q TY UQ24A(2)RC UQ24A(2)RCD DB P DB900364D DB630083A DB902020A DB900752D DB A DB A DB A DB A DB300027F DB300282B DB952047A DB6027A DB C DB C DB96097A DB904076B DB646060B DB900350G DB90035A DB700088A DB90066D DB90088B DB950339F DB730008A DB A DB960637B DB A DB F DB A DB960635A DB A DB G DB930329A DB B DB B DB L DB A DB725065A DB603000A DB603000D DB960670B DB60593A CABINETFRONT CABINETFRONT GUARD FAN BASE OUT BASE OUT FANPROPELLER FANPROPELLER BOLT SPECIAL NUT FLANGE MOTOR FAN OUT MOTOR FAN OUT MOTOR B/K BRACKET MOTOR PARTITION PARTITION COND UNIT COVER CONTROL CABINETBACK CABINETSIDE RH CABINETSIDE LF BARSTEEL CABINETUPPER CABINETUPPER COMPRESSOR GROMMET ISLATOR NUT WASHER TUBE SUCTION TUBE SUCTION PACKED V/V 5/8" PACKED V/V 5/8" TUBE CAPILLARY TUBE CAPILLARY CONTROL OUT CONTROL OUT POWER RELAY CAPACITOR TERMINAL BLOCK SPARK KILLER SPARK KILLER FUSE MOTOR CAPACITOR THERMOSTAT CLOTH SOUND NUT FLANGE /4" NUT FLANGE 5/8" TUBE DISCHARGE BRACKETVALVE PP AS+G/F20% PP M8 L25 M6LF OSM906SRC SGCCM SGCCM H29B26UABCA CR M8 PTYPE UZ 2A BB220 35uF/450VAC 8P/35A 2A, 250V 4uF/450VAC PW 2N C377BD C377BD

28 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 28 ΙΛ Assembly drawing and part s list (Continued) 3 PCB Box Part s List Specification No. Description AS8A9(0)RCF / AS8A9(0)RCFD AS24A(2)RC / AS24A(2)RCD Q TY Remark MAIN PCB DB930985A 2 THERMISTOR 03AT / DKS03FW 3 PCB DISPLAY 4 CASE CONTROL ABS 5 COVER DISPLAY ABS 28

29 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 29 Λ Refrigerating cycle block diagram Refrigerating cycle temperature and pressure STD Pressure Piping Temp.[ F/( C)] Use Temp. Condition [ F/( C)] Model Operating Condition (psi) 3Way Valve T T2 Indoor Outdoor DB WB DB WB AS8A9(0)RCF AS8A9(0)RCFD Cooling Standard Max over load Low temp 64~78 50~54 (0~2) 50~54 (0~2) 80 (26) 80 (26) 67 (20) 67 (20) 67 (20) 57 (3) 95 (35) 5 (46) 67 (20) 75 (24) 75 (24) 57 (3) AS24A(2)RC AS24A(2)RCD Cooling Standard Max over load Low temp 57~7 46~54 (7~2) 46~54 (7~2) 80 (26) 80 (26) 67 (20) 67 (20) 67 (20) 57 (3) 95 (35) 5 (46) 67 (20) 75 (24) 75 (24) 57 (3) 29

30 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 30 ΛΙ Performance curve Note Data is based on condition of indoor humidity 50%. Air flow should be set at HI. AS8A9(0)RCF/ AS8A9(0)RCFD Total power consumption Total power consumption (x0 3 kw) Indoor intake air WB temperature( F) Outdoor intake air DB temperature( F) Total capacity Total capacity (x0 3 Btu/h) Indoor intake air WB temperature( F) Outdoor intake air DB temperature( F) 30

31 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 3 High pressure Condensing pressure (psi.g) Indoor DB temperature( F) Outdoor ambient DB temperature( F) Low pressure Suction pressure (psi.g) Indoor DB temperature( F) Outdoor ambient DB temperature( F) 3

32 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 32 ΛΙ Performance curve (Continued) Suction temperature Suction temperature ( F) Indoor DB temperature( F) Outdoor ambient DB temperature ( F) Discharge temperature Discharge temperature ( F) Indoor DB temperature( F) Outdoor ambient DB temperature ( F) 32

33 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 33 AS24A(2)RC/ AS24A(2)RCD Total power consumption Total power consumption (x0 3 kw) Indoor intake air WB temperature( F) Outdoor intake air DB temperature( F) Total capacity Total capacity (x0 3 Btu/h) Indoor intake air WB temperature( F) Outdoor intake air DB temperature( F) 33

34 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 34 ΛΙ Performance curve (Continued) High pressure Condensing pressure (psi.g) Indoor DB temperature( F) Outdoor ambient DB temperature( F) Low pressure Suction pressure (psi.g) Indoor DB temperature( F) Outdoor ambient DB temperature( F) 34

35 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 35 Suction temperature Suction temperature ( F) Indoor DB temperature( F) Outdoor ambient DB temperature ( F) Discharge temperature 86 Discharge temperature ( F) Indoor DB temperature( F) Outdoor ambient DB temperature ( F) 35

36 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 36 ΛΙΙ PCB diagram Main PCB 36

37 AS8A9(0)RCF SM_E_5775 3/0/05 7:5 PM Page 37 Part s List Location No. Description Specification Q TY C03 CCERAMIC,DISC 2.2nF,20%,400V,Y5U,TP,2. C702 CFILM,MPPF 00nF,0%,275V,BK,8x6x2,5 CR7 CFILM,MPPF 2000nF,+05%,450V,BK,38x8x C70 CFILM,MPEF 220NF,0%,275V,BK,26.5X8.5X RY7,72,74 RELAYMINIATURE 2VDC,200MW,3000MA,FORM 3 SS7 SSR 2Vdc,,2A,mS,mS IC04 IC MICOM S3C8469(SDIP) IC02 ICVOLT REGU KA7805A,TO220AB,A,0/25C, TN TRANS 2UEW0.30/2UEW0.45,.5KV,KHz,,7Pi FT7 CHOKECOIL LSA05230P,AC250V,2A,30.5x22x3 BZ6 BUZZER CBE2220BA,STICK,,,,,,, F70 FUSE FST,250V,3.5A,20MM,VDE,50T03 F70 HOLDERFUSE FH5H,7.5A,,,,, D0,02,03,04 DIODERECTIFIER N4007,000V,A,DO4,TP 4 D05 DIODERECTIFIER UG2B,00V,2A,DO204AC,TP ZD2 DIODEZENER DIODEZENER;MTZ3.6A,3.6V, V,50 ZD3 DIODEZENER DIODEZENER;MTZJB,V,0.5.05V,500m ZD DIODETVS DIODETVS;ST02D200,85/200/25V,200W,DO Q603 TRSMALL SIGNAL TRSMALL SIGNAL;KSA708Y,PNP,800mW,TO92 Q40,60,602 TRSMALL SIGNAL TRSMALL SIGNAL;KSC945,NPN,250mW,TO92,T 3 Q90,902 TRDIGITAL TRDIGITAL;KSR2002,PNP,300MW,0K/0K,TO 2 Q20 TRDIGITAL TRDIGITAL;KSR002,NPN,300MW,0K/0K,TO PC PHOTOCOUPLER PHOTOCOUPLER;TR,50600%,200mW,DIP4,ST PC2 PHOTOCOUPLER PHOTOCOUPLER;TR,20300%,200mW,DIP4,ST IC0 ICPWM CONTROLLER ICPWM CONTROLLER;255,DIP,8P,300MIL,PLAS VA7,72 VARISTOR 560V,2500A,7.5x7.5mm,TP 2 R405,406 RCARBON 330ohm,5%,/8W,AA,TP,.8x3.2mm 2 R04,05 RCARBON 220OHM,5%,/4W,AA,TP,2.4X6.4MM 2 R0 RCARBON 470OHM,5%,/4W,AA,TP,2.4X6.4MM R206,50,502,60,604,606,902 RCARBON 0KOHM,5%,/8W,AA,TP,.8X3.2MM 7 R20,207,208,40,403,408,603,605,608 RCARBON KOHM,5%,/8W,AA,TP,.8X3.2MM 9 R90,9,92,93 RCARBON 3.3KOHM,5%,/8W,AA,TP,.8X3.2MM 4 R02,03 RCARBON 330KOHM,5%,/4W,AA,TP,2.4X6.4MM 2 R06,90 RCARBON 4.7KOHM,5%,/8W,AA,TP,.8X3.2MM 2 R607 RCARBON 560OHM,5%,/4W,AA,TP,2.4X6.4MM R402 RCARBON 6.8KOHM,5%,/8W,AA,TP,.8X3.2MM R602 RCARBON(S) KOHM,5%,/2W,AA,TP,2.4X6.4M R202,203 RMETAL OXIDE(S) 5Kohm,5%,2W,AA,TP,4x2 2 R404,407 RMETAL 6.8Kohm,%,/8W,AA,TP,.8x3.2m 2 C203,204,40 CCERAMIC,MLCAXIAL 0nF,+8020%,25V,Y5V 3 C404,903 CCERAMIC,MLCAXIAL nf,0%,50v,y5p,tp, 2 C02,04,07,09,4,6,7,8,20, CCERAMIC,MLCAXIAL 00nF,+8020%,50V,Y ,402,403,50,90 C05 CAL 000uF,20%,25V,GP,TP,0x20,5 C60 CAL 47uF,20%,50V,GP,TP,6.3x,2.5 C08 CAL 470uF,20%,25V,GP,TP,0x6,5 C0,0 CAL 6.8uF,20%,450V,GP,TP,0x6mm,5 2 X50 RESONATORCERAMIC 4MHz,0.5%,TP,0.0x5.0x F702 FUSERADIAL LEAD 250V,A,TIMELAG,,8.5x CN78 CONNECTORHEADER WALL,3P/5P,R,3.96mm,S CN7 CONNECTORHEADER WALL,3P/5P,R,3.96mm,S CN73 CONNECTORHEADER WALL,3P/5P,R,3.96mm,S CN9 CONNECTORHEADER BOX,0P,R,2.5mm,STRAIG CN43 CONNECTORHEADER BOX,3P,R,2.5mm,STRAIGH CN4 CONNECTORHEADER BOX,4P,R,2.5mm,STRAIGH CN6 CONNECTORHEADER BOX,6P,R,2.5mm,STRAIGH IC07 ICMASK ROM 93LC56B,8BIT,,DIP,8P,,, IC03 ICRESET KA7533,DIP,,,,, IC06 ICDRIVE KID65003AP,DIP,6P,STICK,TRAR 2 L0 COIL CHOKE 5.0mH,,8.0*.0,,,PEM0 WIRESO COPPER PI0.6,SN,T,52MM,TAPING_WI 35 PCBMAIN PDSH30ZC00,FR,,,T.6,W97 37

38 AS8A9(0)RCF SM_E_5775 3/0/05 7:6 PM Page 38 ΛΙΙΙ Wiring diagram Indoor unit AS8A9(0)RCF/ AS8A9(0)RCFD/AS24A(2)RC/AS24A(2)RCD This document can not be used without Samsung s authorization. 38

39 AS8A9(0)RCF SM_E_5775 3/0/05 7:6 PM Page 39 2 Outdoor unit US8A9(0)RCF/US8A9(0)RCFD MARK NAME MARK NAME PR POWER RELAY TB, 2 TERMINAL BLOCK F FUSE(2A, 250V~) FM FAN MOTOR S SPARK KILLER C CAPACITOR US24A(2)RC/US24A(2)RCD MARK NAME MARK NAME PR POWER RELAY TB, 2 TERMINAL BLOCK C CAPACITOR FM FAN MOTOR F FUSE(2A, 250V~) S SPARK KILLER This document can not be used without Samsung s authorization. 39

40 AS8A9(0)RCF SM_E_5775 3/0/05 9:36 PM Page 40 ΙΧ Schematic diagram Indoor unit AS8A9(0)RCF/ AS8A9(0)RCFD/ AS24A(2)RC/ AS24A(2)RCD This document can not be used without Samsung s authorization. 40

41 AS8A9(0)RCF SM_E_5775 3/0/05 7:6 PM Page 4 MEMO 4

42 AS8A9(0)RCF SM_E_5775 3/0/05 7:6 PM Page 42 ELECTRONICS This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable lnternational and/or domestic law.

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