SERVICE Manual SPLIT TYPE AIR CONDITIONER Indoor Unit AQ8A9(0)RCF AQ8A9(0)RCFD AQ24A(2)RC AQ24A(2)RCD Outdoor Unit UQ8A9(0)RCF UQ8A9(0)RCFD UQ24A(2)RC UQ24A(2)RCD E DB985778A(4)
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
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 5 6 2 ΙΙΙ ASSEMBLY DRAWING AND PART S LIST. Indoor unit 2. Outdoor unit 3. PCB Box 22 24 28 ΙΛ REFRIGERATING CYCLE BLOCK DIAGRAM 29 Λ PERFORMANCE CURVE 30 ΛΙ PCB DIAGRAM ΛΙΙ. Main PCB 36 WIRING DIAGRAM. Indoor unit 2. Outdoor unit 38 39 ΛΙΙΙ SCHEMATIC CIAGRAM. Indoor unit 4 ΙΧ SPLIT TYPE AIR CONDITIONER 3
Disassemble and reassemble Stop operation of the air conditioner and remove the power cable before repairing the Ι 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
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
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
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
Ι Disassemble and reassemble (Continued) 2 Outdoor unit UQ8A9(0)RCF/UQ8A9(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
No. Part Procedure Remark 8) Loosen the fixing screws and separate the cabinet side. [UQ8A9(0)RCF] Loosen the fixing screws and separate the cabinet side LF and RH. [UQ8A9(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 pipeby 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
Ι Disassemble and reassemble (Continued) UQ24A(2)RC / UQ24A(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
No. Part Procedure Remark 7) Loosen the fixing screws and separate the cabinet side. [UQ24A(2)RC] Loosen the fixing screws and separate the cabinet side LF and RH. [UQ24A(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.
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
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 : 04A25700b7 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
ΙΙ Set up the option code(continued) Table of the option code Model AQ8A9RCF/AQ8A9RCFD AQ8A0RCF/AQ8A0RCFD AQ24ARC/AQ24ARCD AQ24A2RC/ AQ24A2RCD Option code 09545A02d 08545A02d 09767A023F 08767A023F 4
ΙΙΙ Troubleshooting Items to be checked first ) The input voltage should be rating voltage 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 seven 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 a symptom not related to the malfunction of the air conditioner. No. 2 3 4 5 6 7 8 9 Operation of air conditioner The STD operation indicator, LED blinks when a power plug of the indoor unit is plugged in at first. In the Cool mode, the compressor does not operate at a room temperature higher than the setting temperature while the indoor fan operates. In the Heat mode, the compressor does not operate at a room temperature lower than the setting temperature that indoor fan should operate. The Fan speed operating is not allowed in the Auto or Dry mode. Compressor stops operating intermittently in the Dry mode. Compressor of the outdoor unit is operating although it is turned off in the Heat mode. Only timer LED of the indoor unit lights up and the air conditioner does not operate. The compressor and indoor fan stop intermittently in the Heat mode. Indoor fan and outdoor fan stop operating intermittently in the Heat mode. The compressor stops intermittently in the Cool mode or Dry mode and the fan speed of the indoor unit decreases. Explanation It indicates power is on. The LED stops blinking if the operation On/Off button on the remote control is pushed. 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. Fan speed is five steps are selected automatically in the Auto mode. Compressor operation is controlled automatically in the Dry mode depending on the room temperature and humidity. When the unit is turned off while deice is activated, the compressor continues operating for up to 9 minutes (maximum) until the deice is completed. The Timer is being activated and the unit is in the ready mode. The unit operates normally if the timer operation is cancelled. The compressor and indoor fan stop intermittently if room temperature exceeds a setting temperature in order to protect the compressor from overheated air in a Heat mode. The compressor operates in a reverse cycle to remove exterior ice in the Heat mode, and indoor fan and outdoor fan do not operate intermittently for within 20% of the total heater operation 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 details on the display panel. No. 2 3 4 5 6 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 wasn t setup or option data error) 5
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. 5 seconds 6 Replace PCB display Is DC voltage of PCB display normal? Is the rating Voltage ±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 of 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), #7(IC04 : 4way valve) and #6(IC04 : outdoor 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 voltage of #48 and #49 of Micom (IC04)normal? Replace Micom 00ns Normal Refer to remote control unit abnormal diagnosis Replace PCB module Refer to page 2 Are voltages at RY7(Compressor) and RY72 (Outdoor fan) normal? ; DC2V Is voltage at SS7(indoor fan)? Check PCB pattern Replace PCB module Refer to page 2 OK Check connections compressor, outdoor fan and indoor fan Replace RY7, RY73, RY72 and SS7 Is output voltage of ICO2 normal?(dc5v) Is voltage output terminal of D0~D05(IN4007) normal? Replace IC02 Replace IN4007
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? Test rod location + Normal Voltage Micom is abnormal. SS7 SS7 2V Is the supply voltage of the fan motor sufficient? PCB is abnormal. Replace the PCB module Refer to page 2 Test rod location PCB CN73 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
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 block connector(refer to page 6)? 2) Troubleshooting procedure After unplugging out, the power cord should be reconnected within five seconds. Does the STD lamp blink? Does the timer lamp blink during operation? Check PCB and room temperature sensor Check as the procedure No power Refer to page 6 Room temperature sensor is abnormal. 2 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
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? Check as the procedure No Power. Refer to page 6. Normal Is voltage of #~#4 of Micom (ICO4) change?(squarewave) Micom (IC04) is abnormal. Is voltage of pin #0, #5 and #6 of IC06 (KID65003) change?(squarewave) Driver IC06(KID65003) or IC06 is abnormal. UP/DOWN louver motor is abnormal. 5. When there is no warm air in the current mode ) Checklist : () Is the set temperature of Remote Control lower than room temperature in the Heat mode? (2) Is the Indoor PCB properly connected with the CN78 connector? 2) Troubleshooting procedure After training on, the Heating starts in five minutes. Normal Is the number #7 of Micom (IC04) DC 4.8 V? Micom is abnormal. Is the number #2 of IC06 (KID65003) LOW? IC07 is abnormal Is voltage rating between CN7 #5 and CN78 # within ±0% range? 4 way valve of the outdoor unit or connection cable is abnormal. Replace 4 way valve Check connection cable RY73 is abnormal Replace PCB module Refer to page 2 9
ΙΙΙ Troubleshooting (Continued) 6. When the remote control does not operate ) 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. Is voltage of battery less than 2.5V (Remote Control Unit)? Is LCD display status of the remote control normal? Check as the procedure No Power Refer to page 6 Normal Replace the battery LCD is abnormal. Does the transmission display lamp blink when you push the On/Off button on the remote control? Is voltage of #30 of remote control of Micom (IC04) changed? Is voltage at collector of Q60 or Q602 changed? Replace button 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)? Receiver module is abnormal. Micom (IC04) is abnormal. 20
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? Refer to set up the option code Replace another PCB module 2
ΙΛ Assembly drawing and part s list Indoor unit 9 8 7 3 3 6 2 4 9 8 02 0 2 5 0 7 20 6 7 6 72 5 3 32 33 22 3 4 2 22
Part s List No. Code No. Description Specification AQ8A9(0)RCF AQ8A9(0)RCFD Q TY AQ24A(2)RC AQ24A(2)RCD DB640027A GRILLE AIR INLET HIPS 2 DB633050C GUARD AIR FILTER PP 2 2 3 DB9500287N CLEANER FILTER ASS Y 3 DB6064B CASECLEANER FILTER PP 2 2 32 DB6300436D CARBON FILTER POLTER/CARBON 33 DB6300435D 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 UP ABS(BLK) 7 DB9400099B ASS Y TRAY DRAIN ASS Y 7 DB3053B STEPPING MOTOR MP24S 72 DB660004A BLADEH HIPS 8 DB96025A ASS Y EVAP PLATE.2(5/8 ) DB96025G ASS Y EVAP SLIT.5(/2 ) 9 DB6700058A SPACEREVAP PVC 0 DB9000884A ASS Y HOLDER MOTOR(24K) DB9000433Y ASS Y HOLDER MOTOR(8K) 0 DB60060A HOLDER MOTOR PP(Vo) 02 DB6500039G TERMINAL BLOCK ASS Y 6P, 25A DB305D MOTOR FAN IN IIC9430SKC7B 2 DB9400040J ASS YCROSS FAN ø95 x L 3 DB9440003A RUBBER BEARING CR(BLK) 3 DB9440007A BEARING MOTOR 4 DB930984A ASS Y PCB MAIN PDSH30ZC00 5 DB3200027B ASS YTHERMISTOR 03AT/DSK03FW 6 DB6063A CASE CONTROL ABS(VO) 7 DB940007A ASS Y BACK BODY 8 DB9000434A ASS Y HOLDER PIPE 9 DB700663A PLATE HANGER SGCCM 20 DB6300227A COVERTERMINAL BLOCK ABS 2 DB70005A PLATEKCKOUT SGCCM 22 DB930086B ASS YREMOCON 23
ΙΛ Assembly drawing and part s list (Continued) 2 Outdoor unit UQ8A9(0)RCF/ UQ8A9(0)RCFD 02 03 0 0 6 8 7 6 9 23 24 2 22 2 4 5 4 5 3 52 5 53 55 3 56 54 57 8 3 2 25 7 7 72 73 24
Part s List No. Code No. Description Specification Q TY UQ8A9(0)RCF UQ8A9(0)RCFD 2 3 4 5 6 7 8 9 0 0 02 03 2 2 22 23 24 25 3 3 4 5 5 52 53 54 55 56 57 6 7 72 73 8 DB9000353K DB900877A DB902060H DB900753A DB6750063A DB6030020A DB300056D DB620008C DB940065A DB940065D DB960438C DB904076B DB90067L DB90083C DB900349A DB700087A DB90063D DB900878A 48D90IUEH DB7300082A DB6030028A DB603008A DB63065D DB950022C DB9500672A DB9900462A DB9900652A DB6200898B DB620396A DB990075C DB9900653A DB9300673K DB9303288A 3500084 25000238 DB6500040B DB9590026B DB9590026L 360000236 25000370 DB3200007A DB7250537A DB630278A DB67200A DB603000A DB603000C 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 HEATER HEATER 4WAYVALVE 4WAYVALVE PACKED V/V /2" PACKED V/V /2" CHECK V/V CHECK V/V CONTROL OUT CONTROL OUT POWERRELAY CAPACITOR TERMINAL BLOCK SPARK KILLER SPARK KILLER FUSE MOTOR CAPACITOR THERMOSTAT CLOTH SOUND FELTCOMP SOUND DRAIN PLUG OUT NUT FLANGE /4" NUT FLANGE /2" BRACKETVALVE AS+G/F20% M6LF ASS030ZTEC SGCCM PH, 208/230V,60Hz NR,BRK M8 M5 PBT,BLK 240V,45W PTYPE UZ 2A BB220 25A 40uF/450VAC 8P/35A 2A,250V 2.5uF/450VAC PW 2N PP C377BD C377BD 3 3 3 3 25
ΙΛ Assembly drawing and part s list (Continued) UQ24A(2)RC / UQ24A(2)RCD 02 03 0 6 6 8 0 5 7 9 32 3 4 56 4 3 22 2 3 2 54 5 5 55 53 52 8 7 2 7 72 73 26
Part s List No. Code No. Description Specification Q TY UQ24A(2)RC UQ24A(2)RCD 2 3 4 5 6 7 8 9 0 0 02 03 2 2 22 3 3 32 4 5 5 52 53 54 55 56 57 6 7 72 73 8 DB9000652P DB900364D DB630083A DB902020A DB900752D DB6750074A DB6700438A DB6020020A DB6030020A DB300027F DB300282B DB952047A DB6027A DB9450039C DB9400685C DB96096B DB904076B DB646060B DB900350G DB90035A DB700088A DB90066D DB90088B DB950339G DB730008A DB6030028A DB99049E DB9900654A DB6240055F DB6202594A DB6200526C DB99038H DB9900655A DB9300306G DB9303290A DB3490054B 25000237 DB6500040B DB9590026B DB9590026L 360000236 25000379 DB3200007A DB725065A DB67200A DB603000A DB603000D 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 4WAYVALVE 4WAYVALVE PACKED V/V 5/8" PACKED V/V 5/8" 4WAY VALVE CHECK V/V CHECK V/V CONTROL OUT CONTROL OUT SWITCH MAGNET CAPACITOR TERMINAL BLOCK SPARK KILLER SPARK KILLER FUSE MOTOR CAPACITOR THERMOSTAT CLOTH SOUND DRAIN PLUG OUT NUT FLANGE /4" NUT FLANGE 5/8" BRACKETVALVE PP AS+G/F20% PP M8 L25 M6LF OSM906SRC SGCCM SGCCM H29B26UABCA CR M8 PTYPE RANCO(V269205) 4NB2AG 35uF/450VAC 8P/35A 2A,250V 4uF/450VAC PW 2N PP C377BD C377BD 4 4 4 4 27
ΙΛ Assembly drawing and part s list (Continued) 3 PCB Box 2 3 4 5 Part s List Specification No. Description AQ8A9(0)RCF / AQ8A9(0)RCFD AQ24A(2)RC / AQ24A(2)RCD Q TY Remark MAIN PCB DB930984A 2 THERMISTOR 03AT / DKS03FW 3 PCB DISPLAY 4 CASE CONTROL ABS 5 COVER DISPLAY ABS 28
Λ Refrigerating cycle block diagram T Liquid side 2way valve Capillary tube Check valve Capillary tube Heat exchanger (Evaporator) Cross fan Heat exchanger (Condenser) Propeller fan T2 Gas side 3way valve Compressor 4way valve Cooling Heating Gas leak check point Refrigerating cycle temperature and pressure Model Operating Condition STD Pressure (psi) 3Way Valve Piping Temp.[ F ( C)] T T2 Use Temp. Condition[ F ( C)] Indoor Outdoor DB WB DB WB Cooling Standard Max over load 64~78 46~54(8~2) 46~54(8~2) 80(27) 80(27) 67(9) 67(9) 95(35) 95(35) 75(24) 75(24) AQ8A9(0)RCF AQ8A9(0)RCFD Heating Low temp Standard Max over load 270~327 90~97(32~36) 40~58(60~70) 67(9) 70(2) 80(27) 57(4) 59(5) 67(9) 47(8) 75(24) 57(4) 43(6) 65(8) Low temp 70(2) 59(5) 35(2) 33() Standard 57~7 46~54(8~2) 46~54(8~2) 80(27) 67(9) 95(35) 75(24) Cooling Max over load 80(27) 67(9) 5(46) 75(24) AQ24A(2)RC AQ24A(2)RCD Heating Low temp Standard Max over load 270~327 90~97(32~36) 40~58(60~70) 67(9) 70(2) 80(27) 57(4) 59(5) 67(9) 47(8) 75(24) 57(4) 43(6) 65(8) Low temp 70(2) 59(5) 35(2) 33() 29
ΛΙ Performance curve Note Data is based on condition of indoor humidity 50% and cooling mode. Air flow should be set at HI. AQ8A9(0)RCF/ AQ8A9(0)RCFD Total power consumption Total power consumption (x0 3 kw) 2.3 2..9.7.5.3. 55 Indoor intake air WB temperature( F) 65 75 85 95 05 5 Outdoor intake air DB temperature( F) 7 67 63 59 Total capacity (x0 3 Btu/h) 20 8 6 4 2 0 8 6 4 2 0 55 Total capacity Indoor intake air WB temperature( F) 65 75 85 95 05 5 Outdoor intake air DB temperature( F) 7 67 63 55 30
Condensing pressure (psi.g) 360 30 260 20 60 0 55 High pressure Indoor DB temperature( F) 65 75 85 95 05 5 Outdoor ambient DB temperature( F) 86 80 75 70 Suction pressure (psi.g) 00 90 80 70 60 50 40 30 20 55 Indoor DB temperature( F) Low pressure 65 75 85 95 05 5 Outdoor ambient DB temperature( F) 86 80 75 70 3
ΛΙ Performance curve (Continued) Suction temperature ( F) 80 70 60 50 40 30 20 0 0 55 Suction temperature 86 80 75 Indoor DB temperature( F) 70 65 75 85 95 05 5 Outdoor ambient DB temperature ( F) Discharge temperature ( F) 220 200 80 60 40 20 00 55 Discharge temperature Indoor DB temperature( F) 65 75 85 95 05 5 Outdoor ambient DB temperature ( F) 86 80 75 70 32
AQ24A(2)RC / AQ24A(2)RCD Total power consumption (x0 3 kw) 2.9 2.7 2.5 2.3 2..9.7.5.3 55 Total power consumption Indoor intake air WB temperature( F) 65 75 85 95 05 5 Outdoor intake air DB temperature( F) 7 67 63 59 Total capacity (x0 3 Btu/h) 25 20 5 0 5 0 55 Total capacity Indoor intake air WB temperature( F) 65 75 85 95 05 5 Outdoor intake air DB temperature( F) 7 67 63 55 33
ΛΙ Performance curve (Continued) Condensing pressure (psi.g) 360 30 260 20 60 0 55 High pressure Indoor DB temperature( F) 65 75 85 95 05 5 Outdoor ambient DB temperature( F) 86 80 75 70 Suction pressure (psi.g) 00 90 80 70 60 50 40 30 20 55 Indoor DB temperature( F) Low pressure 65 75 85 95 05 5 Outdoor ambient DB temperature( F) 86 80 75 70 34
Suction temperature 80 70 Suction temperature ( F) 60 50 40 30 20 0 Indoor DB temperature( F) 86 80 75 70 0 55 65 75 85 95 05 5 Outdoor ambient DB temperature ( F) Discharge temperature Discharge temperature ( F) 220 200 80 60 40 20 00 55 Indoor DB temperature( F) 65 75 85 95 05 5 Outdoor ambient DB temperature ( F) 86 80 75 70 35
ΛΙΙ PCB diagram Main PCB 36
Part s List Location No. Description Specification 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 RY7,72,73, 74 RELAYMINIATURE 2VDC,200MW,3000MA,FORM 4 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,3.4553.695V,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, RCARBON KOHM,5%,/8W,AA,TP,.8X3.2MM 9 R605,608 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, CCERAMIC,MLCAXIAL 00nF,+8020%,50V,Y5 4 C8,20,202,402,403,50,90 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 Q TY 37
ΛΙΙΙ Wiring diagram Indoor unit AQ8A9(0)RCF/ AQ8A9(0)RCFD/ AQ24A(2)RC/ AQ24A(2)RCD This document can not be used without Samsung s authorization. 38
2 Outdoor unit UQ8A9(0)RCF/ UQ8A9(0)RCFD MARK NAME MARK NAME PR POWER RELAY TB, 2 TERMINAL BLOCK 20S SOLEID COIL FM FAN MOTOR F FUSE(2A, 250V~) S SPARK KILLER This document can not be used without Samsung s authorization. 39
ΛΙΙΙ Wiring diagram (Continued) UQ24A(2)RC/ UQ24A(2)RCD MARK NAME MARK NAME 52C MAGNETIC CONTACTOR TB,2 TERMINAL BLOCK 20C SOLEID COIL CH CRANK CASE HEATER C CAPACITOR FM FAN MOTOR F FUSE(2A,250V~) S SPARK KILLER This document can not be used without Samsung s authorization. 40
ΙΧ Schematic diagram Indoor unit AQ8A9(0)RCF/ AQ8A9(0)RCFD/ AQ24A(2)RC/ AQ24A(2)RCD This document can not be used without Samsung s authorization. 4
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.