SERVICE Manual SPLIT TYPE AIR CONDITIONER Indoor Unit AQ8A9(0)RCF AQ4A()RC Outdoor Unit UQ8A9(0)RCF UQ4A()RC E DB985778A()
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.ft(.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.
Contents DISASSEMBLE AND REASSEMBLE. Indoor unit. Outdoor unit 4 8 Ι SET UP THE OPTION CODE ΙΙ TROUBLESHOOTING. Items to be checked first. Abnormal diagnosis by symptom 3. Replace PCB module 5 6 ΙΙΙ ASSEMBLY DRAWING AND PART S LIST. Indoor unit. Outdoor unit 3. PCB Box 4 8 ΙΛ REFRIGERATING CYCLE BLOCK DIAGRAM 9 Λ PERFORMANCE CURVE 30 ΛΙ ΛΙΙ PCB DIAGRAM 36 WIRING DIAGRAM. Indoor unit. Outdoor unit 38 39 ΛΙΙΙ SCHEMATIC DIAGRAM. 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. ) 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 Front Panel 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. Assembly Tray ) Separate the drain hose from the Drain extension drain hose. ) Take the display PCB out. (Center of the indoor unit) 3) Pull tray drain out from the back body. 5
Ι Disassemble and reassemble (cont d) No. Part Procedure Remark 3 Electrical Parts (Main PCB) ) Take out all the connector of PCB on the upper part. ) 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. ) 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. ) 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 (cont d) Outdoor unit UQ8A9(0)RCF No. Part Procedure Remark Common Work ) Loosen the fixing screws and separate the cover control. ) 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 Common Work 8) Loosen the fixing screws and separate the cabinet side. Fan and Motor ) Remove the nut flange (Turn to the clockwise). ) Separate the fan. 3) Loosen four screws to separate the motor. 3 Heat Exchanger and Compressor ) Release the refrigerant at first. ) 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 (cont d) UQ4A()RC No. Part Procedure Remark Common Work ) Loosen the fixing screws and separate the cover control. ) 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 Common Work 7) Loosen the fixing screws and separate the cabinet side. Fan and Motor ) Loosen the fixing bolt and separate the fan. ) Loosen four fixing bolts to separate the motor. 3 Heat Exchanger and compressor ) Release the refrigerant at first. ) 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.. Press the temperature button simultaneously and insert the battery again. 3. Make sure the remote control display shown as. Step 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.. Every time you press the ) and 7) button, and continue to appear. 3. Every time you press the ), 3), 4), 5), 6), 8), 9), 0), ), ) button, the number increases from ~ (,,,,,,,,, ) and,,,,, in order. ) If the first number is, it is correct. Otherwise, press the button until appears. ) 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.
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. ) When pressing the button ~ on the display, select one of them. Step 3 Reconfirming the option set after completing Example : 04A5700b7 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.. 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.. 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(cont d) Table of the option code Model AQ8A9RCF AQ8A0RCF AQ4ARC AQ4ARC Option code 09545A0d 08545A0d 09767A03F 08767A03F 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. ) 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. 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 0% 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. 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 (cont d) Abnormal diagnosis by symptom. No Power Initial diagnosis ) Checklist : () Is input voltage normal? (voltage rating within ±0% range) () 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 (IC0) normal? (VDC.5VDC) (5) Is output voltage of DC regulator IC KA7805 (IC0) normal? (4.5VDC5.5VDC) ) 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 ~.5VDC appear in the input side of the DC regulator IC KA7805(IC0)? Replace PCB module Refer to page 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 #5 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 Are voltages at RY7(Compressor) and RY7 (Outdoor fan) normal? ; DCV Is voltage at SS7(indoor fan)? Check PCB pattern Replace PCB module Refer to page OK Check connections compressor, outdoor fan and indoor fan Replace RY7, RY73, RY7 and SS7 Is output voltage of ICO normal?(dc5v) Is voltage output terminal of D0~D05(IN4007) normal? Replace IC0 Replace IN4007
. When the Indoor Unit Fan Does Not Operate Initial Diagnosis ) Checklist : () Is the indoor unit fan motor properly connected with the connector (CN73)? () 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? ) 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 V Is the supply voltage of the fan motor sufficient? PCB is abnormal. Replace the PCB module Refer to page 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 (cont d) 3. When the Outdoor Unit Does Not Operate Initial Diagnosis ) Checklist : () Is input voltage normal? (voltage rating within ±0% range) () 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(6p)? ) 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. 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 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. Is the room sensor registered normal? 50 F(0 C) 68 F(0 C) 86 F(30 C) 7.96k Ω.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) () Is the UP/DOWN louver motor properly connected with the connector (CN6)? ) 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? () Is the Indoor PCB properly connected with the CN78 connector? ) 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 # 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 9
ΙΙΙ Troubleshooting (cont d) 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.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 Q60 changed? Replace button Micom is abnormal. Q60(C4375Y) or Q60(C63Y) is abnormal. IR LED(CLL5EU) is abnormal. Is voltage of #6 of Micom (IC04) changed (Indoor unit)? Receiver module is abnormal. Micom (IC04) is abnormal. 0
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
ΙΛ Assembly drawing and part s list Indoor unit 9 8 7 3 3 6 4 9 8 0 0 5 0 7 0 6 7 6 7 5 3 3 33 3 4
Part s List No. Code No. Description Specification 3 3 3 33 4 5 6 6 7 7 7 8 9 0 0 0 3 3 4 5 6 7 8 9 0 DB64007A DB633050C DB950087N DB6064B DB6300436D DB6300435D DB630009A DB640030A DB93003C DB63005A DB9400099B DB3053B DB660004A DB9605A DB9605G DB6700058A DB9000884A DB9000433Y DB60060A DB6500039G DB305D DB9400040J DB9440003A DB9440007A DB930984A DB30007B DB6063A DB940007A DB9000434A DB700663A DB63007A DB70005A DB930086B GRILLE AIR INLET GUARD AIR FILTER CLEANER FILTER ASS Y CASECLEANER FILTER CARBON FILTER CLEANER FILTER COVER TERMINAL FRONT PANEL ASS Y PCB DISPLAY COVER DISPLAY UP ASS Y TRAY DRAIN STEPPING MOTOR BLADEH ASS Y EVAP ASS Y EVAP SPACEREVAP ASS Y HOLDER MOTOR(4K) ASS Y HOLDER MOTOR(8K) HOLDER MOTOR TERMINAL BLOCK ASS Y MOTOR FAN IN ASS YCROSS FAN RUBBER BEARING BEARING MOTOR ASS Y PCB MAIN ASS YTHERMISTOR CASE CONTROL ASS Y BACK BODY ASS Y HOLDER PIPE PLATE HANGER COVERTERMINAL BLOCK PLATEKCKOUT ASS YREMOCON HIPS PP ASS Y PP POLTER/CARBON POLTER/COTTON ABS(V0) HIPS ASS Y ABS(BLK) ASS Y MP4S HIPS PLATE.(5/8 ) SLIT.5(/ ) PVC ASS Y ASS Y PP(Vo) 6P, 5A IIC9430SKC7B ø95 x L CR(BLK) ASS Y PDSH30ZC00 03AT/DSK03FW ABS(VO) ASS Y ASS Y SGCCM ABS SGCCM ASS Y Q TY AQ8A9(0)RCF AQ4A()RC 3
ΙΛ Assembly drawing and part s list (cont d) Outdoor unit UQ8A9(0)RCF 0 6 8 7 6 9 3 4 4 5 4 5 3 5 5 53 55 3 56 54 57 3 5 7 7 7 73 4
Part s List No. Code No. Description Specification Q TY 3 4 5 6 7 8 9 0 3 4 5 3 3 4 5 5 5 53 54 55 56 57 6 7 7 73 DB9000653K DB90060H DB6750063A DB603000A DB300056D DB60008C DB940065A DB96054B DB904076B DB90067L DB90063D 48D90IUEH DB730008A DB603008A DB603008A DB63065D DB9500C DB990046A DB600898B DB990075C DB9300673K 3500084 500038 DB6500040B DB959006B 36000036 5000370 DB300007A DB750537A DB6700A DB603000A DB603000C ASS YCABI FRONT ASS YBASE OUT FANPROPELLER NUT FLANGE MOTOR FAN OUT BASEMOTOR ASS YPARTITION ASS YCOND UNIT ASS YCOVERCONTROL ASS YCABI BACK ASS YCABI UPPER COMPRESSOR GROMMET ISOLATOR NUT WASHER NUT FLANGE COVERTERMINAL ASS YHEATER ASS Y4WAY V/V PACKED V/V /" ASS YCHECK V/V ASS YCONTROL OUT POWERRELAY CAPACITOR TERMINAL BLOCK ASS Y SPARK KILLER FUSE MOTOR CAPACITOR THERMOSTAT CLOTH SOUND DRAIN PLUG OUT NUT FLARE /4" NUT FLARE /" ASS Y ASS Y AS+G/F0% M6LF ASS030ZTEC SGCCM ASS Y ASS Y ASS Y ASS Y ASS Y PH, 08/30V, 60Hz NR, BLK M8 M5 PBT, BLK 40V, 45W ASS Y PTYPE ASS Y ASS Y UZ A BB0 5A 40uF/450VAC 8P/35A ASS Y A, 50V.5uF/450VAC PW N PP C377BD C377BD 3 3 5
ΙΛ Assembly drawing and part s list (cont d) UQ4A()RC 6 6 8 0 9 5 7 3 3 4 56 4 3 3 54 5 5 55 53 5 7 7 7 73 6
Part s List No. Code No. Description Specification Q TY DB900065P ASS YCABI FRONT ASS Y DB9000A ASS YBASE OUT ASS Y 3 DB6750074A FANPROPELLER AS+G/F0% 4 DB60000A BOLT SPECIAL M8 L5 5 DB30007F MOTOR FAN OUT OSM906SRC 6 DB95047A ASS YMOTOR B/K ASS Y 7 DB9450039C ASS YPARTITION ASS Y 8 DB96096B ASS YCONDENSER ASS Y 9 DB904076B ASS Y COVERCONTROL ASS Y 0 DB646060B CABI SIDE OUT SC90073T DB90066D ASS YCABI UPPER ASS Y DB950339G COMPRESSOR H9B6UABCA DB730008A GROMMET MOUNT CR 4 DB603008A NUT WASHER M8 4 3 DB99049E ASS Y4WAY V/V ASS Y 3 DB640055F PACKED V/V 5/8" PTYPE 3 DB60056C 4WAY V/V RANCO(V6905) 4 DB99038H ASS YCHECK V/V ASS Y 5 DB9300306G ASS Y CONTROL OUT ASS Y 5 DB3490054B SWITCH MAGNET 4NBAG 5 500037 CAPACITOR 35µFx450VAC 53 DB6500040B TERMINAL BLOCK 8P, 35A 54 DB959006B SPARK KILLER 55 36000036 FUSE A,50V 56 5000379 MOTOR CAPACITOR 4µF/450VAC 6 DB75065A CLOTH SOUND COMP 7 DB6700A DRAIN PLUG OUT PP 7 DB603000A NUT FLANGE /4" C377BD 73 DB603000D NUT FLANGE 5/8" C377BD 7
ΙΛ Assembly drawing and part s list (cont d) 3 PCB Box 3 4 5 Part s List No. Description Specification AQ8A9(0)RCF / AQ4A()RC Q TY Remark ASS Y MAIN PCB DB930984A ASS Y THERMISTOR 03AT / DKS03FW 3 ASS Y PCB DISPLAY ASS Y 4 CASE CONTROL ABS 5 COVER DISPLAY ABS 8
Λ Refrigerating cycle block diagram T Liquid side way valve Capillary tube Check valve Capillary tube Heat exchanger (Evaporator) Cross fan Heat exchanger (Condenser) Propeller fan T 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 T Use Temp. Condition[ F ( C)] Indoor Outdoor DB WB DB WB Cooling Standard Max over load 64~78 46~54(8~) 46~54(8~) 80(7) 80(7) 67(9) 67(9) 95(35) 95(35) 75(4) 75(4) AQ8A9(0)RCF Heating Low temp Standard Max over load 70~37 90~97(3~36) 40~58(60~70) 67(9) 70() 80(7) 57(4) 59(5) 67(9) 47(8) 75(4) 57(4) 43(6) 65(8) Low temp 70() 59(5) 35() 33() Standard 57~7 46~54(8~) 46~54(8~) 80(7) 67(9) 95(35) 75(4) Cooling Max over load 80(7) 67(9) 5(46) 75(4) AQ4A()RC Heating Low temp Standard Max over load 70~37 90~97(3~36) 40~58(60~70) 67(9) 70() 80(7) 57(4) 59(5) 67(9) 47(8) 75(4) 57(4) 43(6) 65(8) Low temp 70() 59(5) 35() 33() 9
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 Total power consumption (x0 3 kw).3..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) 0 8 6 4 0 8 6 4 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 60 0 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 0 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 (cont d) Suction temperature ( F) 80 70 60 50 40 30 0 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) 0 00 80 60 40 0 00 55 Discharge temperature Indoor DB temperature( F) 65 75 85 95 05 5 Outdoor ambient DB temperature ( F) 86 80 75 70 3
AQ4A()RC Total power consumption (x0 3 kw).9.7.5.3..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) 5 0 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 (cont d) Condensing pressure (psi.g) 360 30 60 0 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 0 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 0 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) 0 00 80 60 40 0 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.nF,0%,400V,Y5U,TP,. C70 CFILM,MPPF 00nF,0%,75V,BK,8x6x,5 CR7 CFILM,MPPF 000nF,+05%,450V,BK,38x8x C70 CFILM,MPEF 0NF,0%,75V,BK,6.5X8.5X RY7,7,73, 74 RELAYMINIATURE VDC,00MW,3000MA,FORM 4 SS7 SSR Vdc,,A,mS,mS IC04 IC MICOM S3C8469(SDIP) IC0 ICVOLT REGU KA7805A,TO0AB,A,0/5C, TN TRANS UEW0.30/UEW0.45,.5KV,KHz,,7Pi FT7 CHOKECOIL LSA0530P,AC50V,A,30.5xx3 BZ6 BUZZER CBE0BA,STICK,,,,,,, F70 FUSE FST,50V,3.5A,0MM,VDE,50T03 F70 HOLDERFUSE FH5H,7.5A,,,,, D0,0,03,04 DIODERECTIFIER N4007,000V,A,DO4,TP 4 D05 DIODERECTIFIER UGB,00V,A,DO04AC,TP ZD DIODEZENER DIODEZENER;MTZ3.6A,3.6V,3.4553.695V,50 ZD3 DIODEZENER DIODEZENER;MTZJB,V,0.5.05V,500m ZD DIODETVS DIODETVS;ST0D00,85/00/5V,00W,DO Q603 TRSMALL SIGNAL TRSMALL SIGNAL;KSA708Y,PNP,800mW,TO9 Q40,60,60 TRSMALL SIGNAL TRSMALL SIGNAL;KSC945,NPN,50mW,TO9,T 3 Q90,90 TRDIGITAL TRDIGITAL;KSR00,PNP,300MW,0K/0K,TO Q0 TRDIGITAL TRDIGITAL;KSR00,NPN,300MW,0K/0K,TO PC PHOTOCOUPLER PHOTOCOUPLER;TR,50600%,00mW,DIP4,ST PC PHOTOCOUPLER PHOTOCOUPLER;TR,0300%,00mW,DIP4,ST IC0 ICPWM CONTROLLER ICPWM CONTROLLER;55,DIP,8P,300MIL,PLAS VA7,7 VARISTOR 560V,500A,7.5x7.5mm,TP R405,406 RCARBON 330ohm,5%,/8W,AA,TP,.8x3.mm R04,05 RCARBON 0OHM,5%,/4W,AA,TP,.4X6.4MM R0 RCARBON 470OHM,5%,/4W,AA,TP,.4X6.4MM R06,50,50,60,604,606,90 RCARBON 0KOHM,5%,/8W,AA,TP,.8X3.MM 7 R0,07,08,40,403,408,603, RCARBON KOHM,5%,/8W,AA,TP,.8X3.MM 9 R605,608 R90,9,9,93 RCARBON 3.3KOHM,5%,/8W,AA,TP,.8X3.MM 4 R0,03 RCARBON 330KOHM,5%,/4W,AA,TP,.4X6.4MM R06,90 RCARBON 4.7KOHM,5%,/8W,AA,TP,.8X3.MM R607 RCARBON 560OHM,5%,/4W,AA,TP,.4X6.4MM R40 RCARBON 6.8KOHM,5%,/8W,AA,TP,.8X3.MM R60 RCARBON(S) KOHM,5%,/W,AA,TP,.4X6.4M R0,03 RMETAL OXIDE(S) 5Kohm,5%,W,AA,TP,4x R404,407 RMETAL 6.8Kohm,%,/8W,AA,TP,.8x3.m C03,04,40 CCERAMIC,MLCAXIAL 0nF,+800%,5V,Y5V 3 C404,903 CCERAMIC,MLCAXIAL nf,0%,50v,y5p,tp, C0,04,07,09,4,6,7, CCERAMIC,MLCAXIAL 00nF,+800%,50V,Y5 4 C8,0,0,40,403,50,90 C05 CAL 000uF,0%,5V,GP,TP,0x0,5 C60 CAL 47uF,0%,50V,GP,TP,6.3x,.5 C08 CAL 470uF,0%,5V,GP,TP,0x6,5 C0,0 CAL 6.8uF,0%,450V,GP,TP,0x6mm,5 X50 RESONATORCERAMIC 4MHz,0.5%,TP,0.0x5.0x F70 FUSERADIAL LEAD 50V,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,.5mm,STRAIG CN43 CONNECTORHEADER BOX,3P,R,.5mm,STRAIGH CN4 CONNECTORHEADER BOX,4P,R,.5mm,STRAIGH CN6 CONNECTORHEADER BOX,6P,R,.5mm,STRAIGH IC07 ICMASK ROM 93LC56B,8BIT,,DIP,8P,,, IC03 ICRESET KA7533,DIP,,,,, IC06 ICDRIVE KID65003AP,DIP,6P,STICK,TRAR L0 COIL CHOKE 5.0mH,,8.0*.0,,,PEM0 WIRESO COPPER PI0.6,SN,T,5MM,TAPING_WI 35 PCBMAIN PDSH30ZC00,FR,,,T.6,W97 Q TY 37
ΛΙΙΙ Wiring diagram Indoor unit AQ8A9(0)RCF/AQ4A()RC This document can not be used without Samsung s authorization. 38
Outdoor unit UQ8A9(0)RCF MARK NAME MARK NAME PR POWER RELAY TB, TERMINAL BLOCK 0S SOLEID COIL FM FAN MOTOR F FUSE(A, 50V~) S SPARK KILLER This document can not be used without Samsung s authorization. 39
ΛΙΙΙ Wiring diagram (cont d) UQ4A()RC MARK NAME MARK NAME 5C MAGNETIC CONTACTOR TB, TERMINAL BLOCK 0C SOLEID COIL CH CRANK CASE HEATER C CAPACITOR FM FAN MOTOR F FUSE(A,50V~) S SPARK KILLER This document can not be used without Samsung s authorization. 40
ΙΧ Schematic diagram Indoor unit AQ8A9(0)RCF/AQ4A()RC 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.