Samsung AQB18J6WC Service Manual Download Page 37

Page: 37 / 86

Samsung Electronics

8-1

8-1-1 Indoor Unit

8. Circuit Descriptions

8-1 PCB Circuit Descriptions

This Document can not be used without Samsung’s authorization.

SMPS PART

INDOOR FAN CONTROL

ZERO CROSSING PART

INDOOR TEMPERATURE SENSOR

MPI PART

BUZZER PART

SUB PCB CONNECTOR

DISPLAY PART

STEP MOTOR & ION

HUMID PART

Summary of Contents for AQB18J6WC

Page 1: ...ner Simple Flat Grille Design good sleep Mode good sleep Mode can help you sleep quickly and soundly and wake up refreshed Multi Functional Cleaning System Silver Nano Health System and Deodorizing Catechin Filter are adopted Silence Mode When you use the Silence Mode you can experience extremely quiet operation of your air conditioner AQV18JAX AQV24JAX Refer to the service manual in the GSPN see ...

Page 2: ...ption Specifications 2 5 13 Alignment and Adjustments 3 1 3 1 Test Mode 3 1 3 2 Indoor Display Error and Check Method 3 2 3 3 Outdoor LED Error Display and Check Method 3 3 3 4 Setting Option Setup Method 3 4 14 Disassembly and Reassembly 4 1 4 1 Indoor Unit 4 2 4 2 Outdoor Unit 4 5 15 Exploded Views and Parts List 5 1 5 1 Indoor Unit 5 1 5 2 Outdoor Unit 5 3 5 3 Ass y Control In 5 5 5 4 Ass y Con...

Page 3: ...eshooting 11 1 11 1 Items to be checked first 11 1 11 2 Fault Diagnosis by Symptom 11 2 11 3 PCB Inspection Method 11 20 11 4 Main Part Inspection Method 11 22 12 Block Diagram 12 1 12 1 Indoor Unit 12 1 12 2 Outdoor Unit 12 3 13 Reference Sheet 13 1 13 1 Index for Model Name 13 1 13 2 Low Refrigerant Pressure Distribution 13 2 13 3 Pressure Capacity mark 13 3 13 4 Q A for Non trouble 13 4 13 5 Cl...

Page 4: ...n order to avoid a hazard The air conditioner 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 0 12inch 3mm Do not extend an electric cord to the air conditioner The air conditioner must be plugged in after you compl...

Page 5: ...ntacts with your skin it can cause skin injury The package of the air conditioner should be recycled or disposed of properly for environmental reasons 1 5 Others Never store or load the air conditioner upside down or sideways to prevent the damage to the compressor Young children or infirm persons should be always supervised when they use the air conditioner Max current is measured according to IE...

Page 6: ...esign With a Smart and fashionable style the high impressive interior design allow this product to set place in anywhere good sleep Mode good sleep Mode can help you sleep quickly and soundly and wake up refreshed Multi functional cleaning system With Silver Nano Health System and Deodorizing Catechin Filters makes your room more refreshed Silence Mode When you use the Silence Mode you can experie...

Page 7: ...0 Compressor Type Rotary G4B135LUAEH Rotary G8T260FUAEW Motor Type Hermetic Hermetic Rated Output W 1324W 2454W Oil Type FREOLα68ES T FREOLα68ES T RLA A 10 25 13 0 Blower Type Cross flow Propeller Cross flow Propeller Motor Type Resin Steel AC Resin Steel DC Resin Steel AC Resin Steel DC Rated Output W 40 90 40 93 FLA 0 3A 65W 0 6A 130W 0 3A 65W 0 6A 130W Piping Maximum Spec Length ft m 98 4 30 98...

Page 8: ...1 9 X 11 7 X 8 6 inch 1 065 X 298 X 218 mm 41 9 X 11 7 X 8 6 inch 1 065 X 298 X 218 mm Outdoor Unit 34 6 X 25 1 X 12 2 inch 880 X 638 X 310 mm 34 6 X 25 1 X 12 2 inch 880 X 638 X 310 mm Noise Indoor Unit AQV18J 48dB Silence 33dB AQV24J 48dB Silence 33dB AQB18J 48dB Silence 33dB AQB24J 48dB Silence 35dB Outdoor Unit AQV18J 58dB AQV24J 60dB AQB18J 58dB AQB24J 60dB Air Purifying System Filter Silver ...

Page 9: ...NER S INSTRUCTIONS MANUAL DE INSTRUCCIONES ISTRUZIONI PER L USO MANUAL DE INSTRU ÍES MANUEL D UTILISATION GEBRAUCHSANWEISUNG Splut type Room Air Conditioner Aire acondicionado domŽstico sistema Split Condizionatore d aria per ambienti ad unitˆ Separate Aparelho de ar condicionado tipo Split Climatiseur de type sŽparŽ Geteilte raumklimaanlage Installation Manual DB98 27556A 1 OWNER S INSTRUCTIONS M...

Page 10: ...utes 2 How to Check the Unit on Test Mode Please check the three LED and Error Mode Display Please check the low pressure as connecting a manifold gauge with the service valve 3 How to Quit Test Mode Press the power button of indoor unit once again Or press the K1 switch of display board three times again After the test operation is finished you cannot retry the test operation without power reset ...

Page 11: ...unit room temperature sensor error open or short 3 2P Indoor unit heat exchanger temperature sensor error open or short 3 3P Indoor fan motor malfunction 3 4P EEPROM error Option Setting Option error option wasn t set up or option data error Option Setting Outdoor unit error Remote Control on off Outdoor Unit Power Reset Samsung Electronics ...

Page 12: ...charge over temperature 10 Discharge temperature sensor error 11 Current sensor error 12 Compressor limit error 13 Coil temperature sensor error 14 1min Time out Communication 15 Fan error 16 OTP error 17 Compressor rotation error 18 Operation condition secession Dual only 19 DC Link voltage sensor error 20 I_Trip error PFC Over current 21 GAS Leak error 22 AC Line Zero Cross Signal out 23 Power O...

Page 13: ...ption SEG1 Push the button to set the display panel to Every time you push the button the display panel reads repeatedly Setting Option SEG2 Push the button to set the display panel to Every time you push the button the display panel reads repeatedly Change it into the set display of Option SEG3 and SEG4 with the button Setting Option SEG3 Push the button to set the display panel to Every time you...

Page 14: ... Setting Option SEG7 Push the button to set the display panel to Every time you push the button the display panel reads repeatedly Setting Option SEG8 Push the button to set the display panel to Every time you push the button the display panel reads repeatedly Change it into the set display of Option SEG9 and SEG10 with the button Setting Option SEG9 Push the button to set the display panel to Eve...

Page 15: ...ol for unit the sound Ding is heard and the OPERATION LED lamp is flickering at the same time then the input of option is completed If the ding sound isn t heard try again pressing the ON OFF button Step 5 Unit operation test run First Remove the battery from the remote control Second Re insert the battery into the remote control Third Press ON OFF key with the direction of remote control for set ...

Page 16: ...Samsung Electronics 4 1 4 Disassembly and Reassembly Necessary Tools Item Remark SCREW DRIVER MONKEY SPANNER ...

Page 17: ... the main power 2 Open the Front Grille by pulling right and left sides of the hook 3 Loosen 1 of the right screw CCW and detach the Terminal Cover Use Screw Driver 4 Detach the thermistor from the Front Grille 5 Loosen 2 fixing screws CCW of Front Grille 6 Unlock 3 hooks to fix Panel Front and Tray Drain Use Screw Driver 4 2 ...

Page 18: ... Main PCB 1 Take all the connector of PCB upper side out Inclusion Power Cord 2 Detach the outdoor unit connection wire from the Terminal Block 3 Loosen 4 fixing screws CCW of Ass y Control In Use Screw Driver You can disassembly Ass y Control In without evaporator disassembled 3 Tray Drain 1 Pull Tray Drain out from the Back Body 4 3 ...

Page 19: ...n the 4 fixing screws CCW of right and left side Use Screw Driver 5 Lifting the Heat Exchanger up a little to push the up side for separation from the indoor unit First check Comp Down and then disconnect the connection pipes before you disassemble the Evaporator from indoor unit 5 Fan Motor Cross Fan 1 Loosen the fixing screw CCW Use Screw Driver 2 Detach the Fan Motor from the Fan 3 Detach the F...

Page 20: ...mon Work 1 Loosen 1 fixing screw CCW of the Cover Control and detach the Cover Control 2 Loosen fixing screws CCW and detach the Cabinet Upper 3 Loosen 1 screw CCW fixed to assemble Control Box with Cabinet Side RH 4 Loosen 6 fixing screws CCW and detach the Cabinet Side RH ...

Page 21: ...4 6 Samsung Electronics Disassembly and Reassembly No Parts Procedure Remark 5 Loosen 2 screws CCW fixed on the Guide Condenser 6 Loosen fixing screws CCW of the Cabinet Front ...

Page 22: ...tach the Nut Flange like the picture on the right side Turn clockwise because the screw is left handed 2 Detach the Fan Propeller 3 Loosen 4 fixing screws CCW to detach the Motor 4 Disconnect the wire between Ass y Control Out and Motor 5 Loosen 2 fixing screws CCW and detach the Bracket Motor ...

Page 23: ... Release the refrigerant at first 2 Loosen fixing screw CCW 3 Disassemble the pipes in both inlet and outlet with welding torch 4 Detach the Heat Exchanger Before you disassemble the pipes and Condenser be sure that there should be no refrigerant remained in the unit 5 Compressor 1 Loosen the fixing nut CCW and detach the Compressor Lead Wire 2 Disassemble the Felt Comp Sound 3 Loosen the 3 bolts ...

Page 24: ...MEMO Samsung Electronics 4 9 ...

Page 25: ...Samsung Electronics 5 1 5 Exploded Views and Parts List 5 1 Indoor Unit ...

Page 26: ...BER CAP DRAIN GUM EPM 1 1 SNA 3 7 DB31 00285A MOTOR STEPPING 220 240V 50 60Hz Class E 1 1 SA 3 8 DB94 00458B ASS Y DRAIN HOSE ASS Y 1 1 SA 4 DB93 05135A ASS Y CONTROL IN ASS Y 1 1 SA 5 DB92 00779L ASS Y PANEL FRONT ASS Y 1 1 SNA 5 1 DB64 01184C PANEL FRONT ABS T2 5 1 1 SA 5 2 DB64 01533B GRILLE AIR INLET PREMIUM ABS 1 1 SNA 5 3 DB64 01534A GRILLE DECO ABS NO COATING 1 1 SNA 5 4 DB63 01186C GUARD A...

Page 27: ...Samsung Electronics 5 2 Outdoor Unit 5 3 ...

Page 28: ...A FELT COMP SIDE FELT PVC Sheet 1 SA DB63 01668A 1 18 G4B135LUAEH COMPRESSOR ROTARY BLDC 1 SNA G8T260FUAEW 1 18 1 DB63 00763A GROMMET ISOLATOR NR 3 SNA DB63 00815A 3 18 2 DB60 30028A SCREW HEX M8 3 3 SNA 18 3 DB63 00817A GASKET EPDM 1 1 SNA 18 4 DB63 00816A COVER TERMINAL PBT G F 15 1 1 SNA 18 5 6021 001142 SCREW MACHINE M5 1 1 SNA 19 DB99 00851A ASS Y VALVE 4WAY ASS Y 1 SA DB99 00852A 1 19 1 DB62...

Page 29: ...2 1 SNA 6 DB61 01097A HOLDER WIRE CLAMP ABS BLK 1 SA 7 6002 001163 SCREW PH M3 L23 1 SNA 8 6001 001054 SCREW TH M4 L16 3 SNA 9 DB93 04832A CONNECT WIRE STEP MOTOR 1 SNA 10 DB32 00020A SENSOR 4P 103AT 1 SA 11 DB63 00851A COVER DRAIN ABS 1 SNA 12 DB73 00242B RUBBER BAND RUBBER 1 SNA 13 DB39 00765T CONNECT WIRE BRN 1 SNA 14 DB39 01193A CONNECT WIRE SKYBLU 3P 1 SNA 15 DB39 01210B CONNECT WIRE RED BLU ...

Page 30: ...MEMO Samsung Electronics 5 6 ...

Page 31: ...Samsung Electronics 5 7 5 4 Ass y Control Out AQV18JAX DB93 04346B AQV24JAX DB93 04346A ...

Page 32: ...0mmm AL 1 1 SNA 12 DB65 00181C TERMINAL BLOCK DAF 6P 1 1 SNA 13 DB93 04328B ASSY PCB MAIN OUT PCB 2L 1 SA DB93 04328A ASSY PCB MAIN OUT PCB 2L 1 SA 14 DB93 04267B ASSY PCB SUB EMI PCB 2L 1 SA DB93 04267A ASSY PCB SUB EMI PCB 2L 1 SA 15 DB93 04329A ASSY PCB DISPLAY PCB 1L 1 1 SA 16 DB98 17991A ASSY INSULATOR MICA MICA 2 2 SNA 17 6002 000630 SCREW TAPPING PH M2 L8 3 3 SNA 18 DB91 00306A ASSY SCREW M...

Page 33: ...Samsung Electronics 6 1 6 Wiring Diagram 6 1 Indoor Unit This Document can not be used without Samsung s authorization ...

Page 34: ...This Document can not be used without Samsung s authorization 6 2 Outdoor Unit 6 2 Samsung Electronics ...

Page 35: ...7 1 Samsung Electronics 7 Schematic Diagram 7 1 Indoor Unit This Document can not be used without Samsung s authorization ...

Page 36: ...7 2 Outdoor Unit This Document can not be used without Samsung s authorization Samsung Electronics 7 2 ...

Page 37: ...escriptions 8 1 PCB Circuit Descriptions This Document can not be used without Samsung s authorization SMPS PART INDOOR FAN CONTROL ZERO CROSSING PART INDOOR TEMPERATURE SENSOR MPI PART BUZZER PART SUB PCB CONNECTOR DISPLAY PART STEP MOTOR ION HUMID PART ...

Page 38: ...This Document can not be used without Samsung s authorization 8 1 2 Outdoor Unit Samsung Electronics 8 2 Circuit Descriptions Circuit Descriptions TEMPERATURE SENSOR EEV PFC SMPS INVERTER ...

Page 39: ... Cycle Diagram 8 3 Heat Exchanger Evaporator Heat Exchanger Condenser Propeller Fan Cross Fan 2 way valve 3 way valve 4 way valve Gas side Liquid side Compressor Indoor Unit Outdoor Unit Cooling Heating Gas Leak Check Point Expansion valve ...

Page 40: ...d Power Temperature Sensor Motor RPM Feedback Auto Grill Remocon Module HVPS High voltage Generator Humidity Sensor BLADE H Step Motor Anions Display MPI Indoor Fan Motor 7 8 9 1 2 3 4 5 10 11 6 12 9 PCB Diagram 9 1 Indoor PCB 9 1 1 11 12 8 7 2 3 4 9 10 6 5 ...

Page 41: ... is not used 9 2 Outdoor Inverter PCB 9 2 Power N COND OLP Temperature Sensor Power L DIS OUT Temperature Sensor BLDC FAN EEV Connector AC FAN Comp Connector Wire Communication 485 Reactor Connector Wire 6 7 1 2 3 4 5 9 10 8 9 2 1 10 4 3 7 6 8 5 ...

Page 42: ...Samsung Electronics MEMO 9 3 ...

Page 43: ...tructions 10 1 Name of Each Part Air Inlet Temperature sensor Air flow blades outlet Turbo indicator RED Operation indicator GREEN Timer indicator GREEN Air filter under the grille On Off button Air Outlet Air Inlet Rear ConnectionValve Inside ...

Page 44: ...cator Turbo function indicator Sleep mode indicator Energy saving indicator Power On Off button Temperature adjustment button Transmission indicator Temperature andTimer setting Turbo button 1 HourTimer button Battery life indicator Battery check button Timer Set Cancel button Fan speed Silence indicator Airflow direction Fan speed adjustment button Silence mode button Airflow control button Opera...

Page 45: ...til is displayed Press the button to select the fan speed until the required setting is displayed Heat Mode Press the button on the remote control until is displayed Press the button to select the fan speed until the required setting is displayed 10 3 1 Basic Function 10 3 Automatic rotated Silence mode Low Medium High Maximum Automatic rotated Silence mode Low Medium High Maximum ...

Page 46: ... 3 2 Applied Function Mode Explanation Remark Turbo Function Press the button After 30 minutes the air conditioner is reset automatically to the previous mode temperature and fan settings You can select the Turbo function in the Auto Cool and Heat mode If you select this function in the Dry or Fan mode it will return to the Auto mode good sleep Mode Press the button until the indicator appears on ...

Page 47: ...ed automatically with reference to a temperature of the air blew 3 Fan speed setting is not allowed in DRY mode The speed of the indoor fan is set to LL in DRY mode Fan speed is selected automatically in AUTO mode 4 Compressor stops operation intermittently in DRY mode Compressor operation is controlled automatically in DRY mode depending on the room temperature and humidity 5 Timer LED ORANGE of ...

Page 48: ...No Reconnect wires correctly No Check the display board operate Press the Power Button on the remote control unit to operate the air conditioner Unplug the power cord and plug it after 30 seconds Check the indoor unit control board does not operate Check whether 2 wires of power cord are connected correctly to the terminal block and control board Check whether the fuse on the control board is norm...

Page 49: ...rminal block 1 and 2 correct after power input Pull out the power cord and execute the following step after 30 seconds Is the outdoor unit normal Is the outdoor unit normal Is the reactor connected correctly Is the of C102 short Is the R701 resistance of indoor PCB 200Ω Is the indoor unit fuse normal Exchange the fuse Connect the reactor wire Disassemble the PCB from the case Is there no error at ...

Page 50: ...ting procedure Yes No Yes Yes Driver IC05 06 ULN2003A is faulty No Micom IC04 is faulty No Normal Yes Check as in the procedure No Power No Is STD lamp blinking Unplug the power cord and plug it after 30 seconds Does operation start when swing button of the remote control unit pushed Voltage at pin 30 34 of micom IC04 change Squarewave Voltage at pin 2 5 of CN61 motor connector change Squarewave U...

Page 51: ... No Yes Yes Is the Pin voltage of CN01 1 3 over 250V Follow the Check Procedure of outdoor unit power supply error check FAN DRIVE CIRCUIT Q901 Q902 etc error Exchange the PCB Exchange the PCB MICOM Error Is the Pin voltage of CN01 3 5 within 1V 5V during the operation Does the Pin voltage of IC01 MICOM No 13 change Square Wave Is the Pin voltage of CN01 6 changed during the operation Square Wave ...

Page 52: ...on obstruction at the surrounding of outdoor Outdoor unit cover Fan front obstruction etc 2 Troubleshooting procedure No Exchange the PCB No Exchange the PCB No Exchange the compressor No Reinstall and remove the obstruction Yes Yes Yes Yes Is the installation of outdoor unit good Dose the compressor rotate normally Is the assembly of R418 R413 IC41 C437 and the peripheral part good Pull out the p...

Page 53: ...sensor correctly Over shortage of the refrigerant Connect the connecter correctly 4 WAY valve coil error Exchange the outdoor PCB No No No Yes No Yes Yes Yes No Yes Yes Yes OK Yes No No No NG No Is the Thermo off Is the unit in the defrosting operation Is the compressor in 3 minutes off Indoor operation SW is on Is much frost in the heat exchanger Does the 4 way valve operate normally Is the outdo...

Page 54: ... Dose the voltage of DC300V apply to the connector of outdoor fan during the operation of outdoor unit The over shortage of refrigerant Insufficient Capacity Load estimation error Connect the connector Outdoor fan error Check the motor wire Exchange the out PCB EEV coil error Connect the connector Is much frost in the heat exchanger Is much frost in the heat exchanger Outdoor PCB error EEV main bo...

Page 55: ...nce with a color Is the temperature sensor connected correctly without separation Does the both terminal of sensor satisfy the resistance value in accordance with temperature Refer to the R T TABLE Is the resistance value of sensor connection pull_up 18 2K Reconnect the sensor connector Change the position of sensor Exchange the sensor Exchange the PCB Exchange the PCB Normal operation Exit Yes Ye...

Page 56: ...ith a color Is the temperature sensor connected correctly without separation Does the both terminal of sensor satisfy the resistance value in accordance with temperature Refer to the R T TABLE Is the resistance value of sensor connection pull_up 24K Reconnect the sensor connector Change the position of sensor Exchange the sensor Exchange the PCB Exchange the PCB Normal operation Exit Yes Yes Yes Y...

Page 57: ...e with a color Is the temperature sensor connected correctly without separation Does the both terminal of sensor satisfy the resistance value in accordance with temperature Refer to the R T TABLE Is the resistance value of sensor connection pull_up 18 2K Reconnect the sensor connector Change the position of sensor Exchange the sensor Exchange the PCB Exchange the PCB Normal operation Exit Yes Yes ...

Page 58: ...4 108 4 45 113 103 3 96 95 90 78 50 122 87 87 81 92 76 45 55 131 74 47 69 44 64 59 60 140 63 65 59 16 54 85 65 149 54 55 50 54 46 71 70 158 46 96 43 37 39 96 75 167 40 55 37 34 34 31 80 176 35 16 32 29 29 58 85 185 30 56 27 99 25 56 90 194 26 66 24 34 22 17 95 203 23 31 21 23 19 28 100 212 20 46 18 58 16 89 105 221 18 01 16 31 14 74 110 230 15 90 17 37 12 95 115 239 14 08 12 69 11 41 120 248 12 51...

Page 59: ... 14 0 44 4 42 5 40 8 1 1 1 1 5 0 23 0 35 3 33 9 32 5 1 1 1 1 0 0 32 0 28 4 27 3 26 2 0 9 0 9 5 0 41 0 22 9 22 1 21 2 0 9 0 9 10 0 50 0 18 6 18 0 17 3 0 7 0 7 15 0 59 0 15 2 14 7 14 2 0 7 0 7 20 0 68 0 12 5 12 1 11 7 0 7 0 7 25 0 77 0 10 3 10 0 9 7 0 5 0 5 30 0 86 0 7 6 8 3 8 0 0 7 0 7 35 0 95 0 7 2 6 9 6 7 0 7 0 7 40 0 104 0 6 0 5 8 5 6 0 9 0 9 45 0 113 0 5 1 4 9 4 7 1 1 1 1 50 0 122 0 4 3 4 2 4 0...

Page 60: ...ue in accordance with temperature 4 Is the resistance value of sensor connection pull_up correct 2 Troubleshooting procedure Isn t the Fan locked Is the connector connected correctly Is the color of Fan wire matched correctly Remove the Fan lock Connect the connector Exchange the Fan Exchange the PCB Normal operation Exit Yes Yes Yes No No No No Troubleshooting 11 14 ...

Page 61: ...in accordance the specification 3 Are R112 R113 R114 470 Kohm 4 Is R115 14 3Kohm 2 Troubleshooting procedure Is the voltage of indoor unit terminal block 1 2 correct after power supply Is the capacitor C101 C102 C103 for DC Link assembled in accordance the specification Apply the troubleshooting for outdoor unit power supply error Connect the connector Exchange the PCB Normal operation Exit Yes Ye...

Page 62: ...sistance value of compressor u v v w w u normal Is the compressor body and interphase resistance insulated Is the condition of indoor outdoor temperature normal load Is the position of temperature sensor and the sensing value normal Is the connection cable for the compressor and power terminal normal Exchange the PCB Terminate the service Exchange the PCB Exchange the Compressor Exchange the Compr...

Page 63: ...edure Yes Restart after power off Is the communication error occurred again Isn t the power cable and communication cable error Is it the outdoor 2 Micom Inverter Main model Exchange the outdoor unit PCB Terminate the service Correct the wrong wiring Is the connection of communication cable normal Correct the connection of communication cable Exchange the indoor outdoor unit PCB Yes Yes Yes No No ...

Page 64: ...rt after power off Is the restart error occurred again Is the interphase resistance value of compressor u v v w w u normal Is the connection cable for the compressor and power terminal normal Exchange the PCB Terminate the service Exchange the compressor Is the compressor body and interphase resistance insulated Exchange the compressor Correct the cable connection Yes Yes Yes No No No No Troublesh...

Page 65: ...art after power off Is the lock error occurred again Is the interphase resistance value of compressor u v v w w u normal Is the connection cable for the compressor and power terminal normal Exchange the PCB Terminate the service Exchange the compressor Is the compressor body and interphase resistance insulated Exchange the compressor Correct the cable connection Yes Yes Yes No No No No Troubleshoo...

Page 66: ...Yes Terminate the service Exchange the PCB Exchange the PCB Exchange the PCB Yes Yes Yes No No Yes Terminate the service No Yes Yes Yes Restart after power off Is the DC Link voltage error occurred again Is the front and back terminal voltage of indoor outdoor power relay normal Is the resistance for the detection of DC Link voltage normal Exchange the reactor Is the appearance of DC Link Capacito...

Page 67: ...ow 3V the assembly module PCB is normal and the main PCB is poor Then replace the main PCB 3 Replace the assembly display PCB because the module PCB is poor if the voltage between No 15 16 of CN91 maintains 5V after the remote control starts operation 11 2 18 The others 1 AC Line Zero Cross Signal OUT Check the assembly condition of peripheral part of IC21 ZD21 ZD20 and D200 on the PCB 2 Capacity ...

Page 68: ...ctronic box Check the PCB fuse 1 Is the fuse disconnected Over current Indoor Fan Motor Short AC Part Pattern Short of the MAIN PCB 2 Supply power If the operating lamp twinkles at this time the above 1 3 have no relation Checking the power voltage 1 Is the DB71 input voltage AC200V AC240V Power Cord is fault Fuse open Wrong Power Cable Wiring AC Part is faulty 2 Is the voltage between both termin...

Page 69: ...and the output 5V 4 Recheck after disassembling BLDC FAN Wire Inner short of outdoor PCB Wrong assembly of outdoor PCB BLDC FAN Error 4 Check the condition of indoor outdoor connec tion cable 1 Is the green LED light on once per second 2 Is the indoor outdoor connection able connected in order 3 Is the grounding wire connected to the both of indoor outdoor unit 4 Is the voltage of terminal block N...

Page 70: ...or Short Room Fan Motor Measure the resistance between terminals of the connector CN72 with a tester Normal At the normal temperature 10 C 30 C Abnormal 0Ω Open or Short Stepping Motor Measure the resistance between the red wire and each terminal wire with a tester Normal About 300Ω at the normal temperature 20 C 30 C Abnormal 0Ω Open or Short Compare terminal Resistance Remark Yellow Blue 404 4Ω ...

Page 71: ...LADE H MOVING SELECT ON OFF TIMER SELECT CANCEL ENERGY SAVING SELECT SOUND ON OFF SELECT DIGITAL ON OFF TEMPERATURE SELECT UP DOWN ZERO VOLTAGE DETECT TRIGGER SIGNAL SSR STEPPING MOTOR DRIVE BUZZER DRIVE ANION DRIVE COMPRESSOR CONTROL SIGNAL STEPPING MOTOR CONTROL SIGNAL BUZZER MELODY CONTROL SIGNAL ANION CONTROL SIGNAL DC5V DC12V AC INPUT VOLTAGE REGULATOR OPTION MELODY CONTROL PART SPEAKER 12 Bl...

Page 72: ...Samsung Electronics SMPS 485 COMMUNICATION SUB PCB INDOOR FAN CONTROL BUZZER CONTROL Block Diagram 12 2 ...

Page 73: ...R DISCHARGE TEMPERATURE SENSOR CONDENSOR TEMPERATURE SENSOR 4 WAY VALVE EEV FAN AC INPUT COMPRESSOR INDOOR UNIT AC ZERO CROSSING SIGNAL COMPRESSOR ZERO CROSSING SIGNAL BLDC FAN PULSE SIGNAL IPM FAULT SIGNAL DC VOLTAGE AC CURRENT FAN CONTROL SIGNAL EEV CONTROL SIGNAL 4 WAY CONTROL SIGNAL PFC CONTROL SIGNAL COMPRESSOR CONTROL 6P BLDC LED CONTROL SIGNAL INDOOR COMMUNICATION SIGNAL PFC CIRCUIT DC5V DC...

Page 74: ...Samsung Electronics 12 4 OUTDOOR FAN B D IGBT DIODE IPM SMPS DC_LINK CAP ...

Page 75: ... GEM Buyer Use the digit for classification between indoor and outdoor Indoor N Outdoor X Use the digit for KD models CKD 1 SKD 2 Product Division AS Cooling Only AQ Heat Pump Capacity 09 9 000 Btu 12 12 000 Btu 18 18 000 Btu 24 24 000 Btu 30 30 000 Btu 36 36 000 Btu Inverter V Inverter None Non Inverter Product classification B BIG F Forte G GP H HB J WW Premium L Forte Deluxe M Moderato P Presto...

Page 76: ...ing more than 10 minutes Indoor Temp Variation 68 F 20 C 90 F 32 C Outdoor Temp Variation 23 F 5 C 113 F 45 C 13 2 80 100 120 140 160 50 60 70 80 90 100 Outdoor Temperature i s p s P 80 100 120 140 160 50 60 70 80 90 100 Outdoor Temperature i s p s P 85 80 75 70 90 Indoor Temperature 85 80 75 70 90 Indoor Temperature Low Refrigerant Pressure Distribution AQV18JA AQV24JA ...

Page 77: ...3 4121 0 001341 0 10197 0 73756 4 1868 1 3 6 14 286 0 0056146 0 42693 3 088 1 163 0 27778 1 3 9683 0 0015596 0 11859 0 85778 0 29307 0 06999 0 252 1 3 9302x10 4 0 029885 0 21616 745 7 178 11 641 19 2 544 4 1 76 04 550 9 8067 2 3423 8 4322 33 462 0 013151 1 7 233 1 3558 0 32383 1 1658 4 6262 0 0018182 0 13826 1 13 3 ...

Page 78: ...floods the floor A Place the drain hose properly When it is not placed properly the drain water would flow back flooding the floor So straighten out the drain hose for the water to be drained well Q Water drips at the drain connection service valve of the outdoor unit A When a glass bottle is taken out of the refrigerator moisture gets condensed on its surface due to the temperature differences Th...

Page 79: ... smells A It occurs generally when there are pet animals in the house Their smells stay at the same place But when the air conditioner is turned on the air gets circulated resulting in the circulation of the smells So find and root out the problem or refresh the room frequently Q It sends out bad smells A When the air filter is filthy it could send out bad smells So clean the filter and ventilate ...

Page 80: ...n case with the outdoor unit in it outside the apartment Also it is illegal obstructing passers by with the outdoor unit installed outside Q What can be done to install the outdoor unit facing the road because it is a commercial building A The following is an excerpt from Building Code going into effect from JUNE 1st 2005 The exhaust pipe of a cooling or ventilation facility installed in a buildin...

Page 81: ...h 4 When you finished insert air filters by fixing it to each tab of the grille 5 To close the front grille fix it to hooks and push down the lower right and left tabs of the grille 6 Clean the front grille with a damp cloth and mild detergent do NOT use benzene solvents or other chemicals Note If you have not used the air conditioner for a long period of time set the fan going for three to four h...

Page 82: ... filters every 3 months 1 Open the upper front grille by pulling the lower right and left tabs of the grille 2 Pull out the deodorizing and Bio filter 3 Wash the filters with clean water then dry them in the shade 4 Insert the filters into the original position Note You can change the position of filters with each other 5 Close the front grille Deodorizing Filter Bio Filter Reference Sheet 13 8 ...

Page 83: ... until the pipe surface becomes uneven or torn apart Be sure to use a torque wrench to tighten pipes or flare nuts Leak Test Put an inert gas like nitrogen in the outdoor unit pipe and put soap bubbles or other test liquids on the pipe surface for the leak test Drain Hose Connecting Install the drain hose downward to drain water naturally Be sure to pour water into the hose to check if it drains w...

Page 84: ...se Remove the hose of the low pressure side of manifold gauge 7 Check for gas leakage At this time especially check for gas leakage from the 3 way valve s stem nuts and from the service port cap 2 Connect the charging hose of low pressure side of manifold gauge to the packed valve having a service port as shown at the figure 5 Set valve cork of both liquid side and gas side of packed valve to the ...

Page 85: ...ocation of the air conditioner Refer to this procedure when the unit is relocated Carry out the pump down procedure refer to the details of pump down Remove the power cord Disconnect the assembly cable from the indoor and outdoor units Remove the flare nut connecting the indoor unit and the pipe At this time cover the pipe of the indoor unit and the other pipe using a cap or vinyl plug to avoid fo...

Page 86: ...ronics Co Ltd Mar 2007 Printed in China Code No DB98 27558A 1 GSPN Global Service Partner Network Area Web Site North America http service samsungportal com Latin America http latin samsungportal com CIS http cis samsungportal com Europe http europe samsungportal com China http china samsungportal com Asia http asia samsungportal com Mideast Africa http mea samsungportal com ...

Search results

Summary of Contents for AQB18J6WC

Reviews:

Samsung AQB18J6WC, Service Manual, Page: 37 / 86

Search results

Summary of Contents for AQB18J6WC

Reviews: