Samsung AQT24A1QE/B Service Manual Download Page 47

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Samsung Electronics

7-1

7. Block Diagrams

7-1 Refrigerating Cycle Block Diagram

INDOOR UNIT

OUTDOOR UNIT

Heat
exchanger
(Evaporator)

Gas side

3-way valve

2-way valve

Liquid side

Capillary tube

Cooling

Gas leak check point

Heat
exchanger
(Condenser)

Heating

Capillary tube

Check valve

Compressor

4-way valve

Accumulator

Summary of Contents for AQT24A1QE/B

Page 1: ...ns and Installation 4 Disassembly and Reassembly 5 Troubleshooting 6 Exploded Views and Parts List 7 Block Diagrams 8 PCB Diagrams 9 Wiring Diagrams 10 Schematic Diagrams ROOM AIR CONDITIONER INDOOR A...

Page 2: ...Samsung Electronics Co Ltd DEC 1998 Printed in Korea Code No DB81 00029A 1...

Page 3: ...g into a power cord This practice may result in malfunction or fire 6 After completing repairs and reassembly check the insulation resistance Procedure Prior to applying power measure the resis tance...

Page 4: ...1 2 Samsung Electronics MEMO...

Page 5: ...processor I C Thermostat Wireless remote control Q Timer 24 Hour ON or OFF 3 Steps and Turbo 1 Step Manual Auto Reciprocating Tecumseh R22 1600g Capillary tube 45 43 41 58 Flare type 10 6 35 1 4 15 88...

Page 6: ...Operating amp Ambient temp Run capacitor F x VAC Type Dia and length mm Fan motor model Pols rpm at240V Normal output W Coil resistance Ambient temp 20 C Safety devices Type Operating temp Open C Clo...

Page 7: ...Samsung Electronics 2 3 2 3 Dimensions 2 3 1 Indoor Unit 2 3 2 Outdoor Unit 2 3 2 a 24K BTU Front view 1080 204 Remote control Rear view Front view Rear view 660 878 58 22...

Page 8: ...Product Specifications 2 4 Samsung Electronics 2 3 3 b 18K BTU Front view Rear view 582 787 340...

Page 9: ...2 5 Samsung Electronics 2 4 Pressure Graph 24K BTU 18K BTU...

Page 10: ...2 6 Samsung Electronics MEMO...

Page 11: ...Use this button to reserve the timer on Set up the time that operation stop Set up the time that operation start Each time you press this button FAN SPEED is changed in the following order Adjusts ai...

Page 12: ...nit operates in DRY mode Compressor ON OFF Time is controlled compulsorily can not set up the fan speed always breeze Protective function Low temperature release Prevention against freeze 5 TURBO MODE...

Page 13: ...displays the polling state sequentially The LCD also displays the time remaining 11 24 Hour ON OFF Real Setting Timer The air conditioner is turned ON at a specified time using OFF TIMER The air Condi...

Page 14: ...high place 3 Make sure that you install the outdoor unit in area providing good ventilation and which is not dusty It must not be blocked by any obstacle affecting the airflow near the air inlet and t...

Page 15: ...rain hose installation Cut the piping hole sloped slightly Piping Liquid 1 4 Clamper tube Installation plate Installation tube Pipe connection Vinyl tape Screw Putty Drain hose Piping may be laid to t...

Page 16: ...bolts the anchor bolts must not project by more than 20mm 4 Determine the positions of the wooden uprights to be attached to the window frame 5 Attach the wooden uprights to the window frame in a mann...

Page 17: ...sembly cable If the outdoor unit is more than five metres away from the indoor unit the cable must first be extended to a maximum of 15 metres 1 Extend the assembly cable if necessary 2 Open the front...

Page 18: ...nnected to upper lowerterminalofauxiliarypowerS W Indoorunit connector wireshould beconnectedto bothindoorunit connectorandoutdoorunit terminalboardasshowninthe figurebelow In heatingand deiceoperatio...

Page 19: ...pipe cutter Tools used 2 Remove burrs at the tip of the pipe cut Caution Burrs not removed may result in leakage of gas 3 Insert a flare nut into the pipe and modifty flare Unproper flaring Outer diam...

Page 20: ...the cap of each valve 8 Check each valve for leakage 5 Open the service valve cap of the 3 way valve and press the needle valve to discharge gas for 3 seconds and leave it for about 1 minute Repeat t...

Page 21: ...ide to the service valve and open the 3 way valve again 5 Check the pressure indicated by the pressure gauge low pressure side Standard pressure is should be 4 5 5 5kg cm2 in a reqular high operation...

Page 22: ...160 300 500 700 200 350 550 750 Fixing Torque Final Torque Torque kg cm Connection Pipe Length 5m Max 5 10m Air Purge Method Refer to the detailed Air Purge Procedure Refrigerant Adjustment Unnecessa...

Page 23: ...this procedure when the unit is relocated 1 Carry out the pump down procedure refer to the details of pump down 2 Remove the power cord 3 Disconnect the assembly cable from the indoor and outdoor uni...

Page 24: ...nd finger to the left and right handle and pull to open the inlet grille 4 Take the left and right filter out 5 Loosen one of the right fixing screw and seperate the terminal cover 6 Loosen two fixing...

Page 25: ...1 2 above 2 Take all the connector of PCB upper side out Inclusion Power cord 3 Separate the outdoor unit connection wire from the terminal block 4 If pulling the Main PCB up it will be taken out Sepa...

Page 26: ...dure Remark 3 Fan Motor and Cross Fan 1 Do 1 2 3 4 above 2 Loosen the fixing three screws and separate the motor holder 3 Loosen the fixing screw of fan motor By use of M3 wrench 4 Separate the fan mo...

Page 27: ...Remove the top cover 3 Remove the control box cover 4 Unplug the ass y cable 5 Remove the cabi side 6 Remove the cabi front When you assemble the parts check if the each parts and electric connectors...

Page 28: ...4 5 Samsung Electronics MEMO...

Page 29: ...9 The compressor stops intermittently in a COOL mode or DRY mode and fan speed of the indoor unit decreases It indicates power is on The LED stops blinking if the operation ON OFF button on the remote...

Page 30: ...VDC Is voltage of 1 indoor fan of the micom normal Is voltage at 32 terminal of the Micom normal 0VDC Is voltage at 64 terminal of the Micom normal 5VDC Is the input rating 10 range applied to the pri...

Page 31: ...shooting After unplugging out the power cord should be reconnected within five seconds Does the operating lamp Green blink Does the Solid State Relay SS71 work properly Is the supply voltage of the fa...

Page 32: ...e power cord should be recon nected within five seconds Does the operating lamp blink YES YES NO NO NO NO NO YES NO Outdoor unit is out of order Power relay is out of order Power relay should be repla...

Page 33: ...y Driver IC05 KID65003 is faulty Micom IC04 is faulty Normal Check as in the procedure No Power parts Refer to page 5 2 5 2 5 In the Heat mode When there is no warm air current Check this first 1 Is t...

Page 34: ...n Micom is faulty Receiver module is faulty Q601 C4375Y or Q602 C1623Y is faulty IR LED CL 1L5EU is faulty sound heard from the indoor unit when ON OFF but ton on the remote control unit pushed Voltag...

Page 35: ...its substrate So if a circuit board is roughly handled such lead wires and parts will be easily broken or damaged by bending or shock 5 When soldering the lead wires of any new part be sure to polish...

Page 36: ...dary 14 18Vac 3 DC voltage at OUT and GND of IC01 KA7812 12VDC 4 DC voltage at OUT and GND of IC02 5VDC 5 DC voltage at Q201 Base and GND change squarewave Voltage check 1 Voltage of relay RY71 coil V...

Page 37: ...al At ambient temperature 10 C 30 C Abnormal Measure the voltage between ground and signal wire of the fan motor Normal Abnormal Abnormal if voltage does not change from 0V to 5V Normal At ambient tem...

Page 38: ...Samsung Electronics 6 1 6 Exploded Views and Parts List 6 1 Indoor Unit...

Page 39: ...P EARTH WIRE TERMINAL BLOCK ASS Y MOTOR FAN IN MOTOR FAN IN ASS Y C F FAN ASS Y HOLDER BEARING RUBBER BEARING HOLDER BEARING BEARING ASS Y MAIN PCB ASS Y MAIN PCB ASS Y MAIN PCB ASS Y MAIN PCB ASS Y T...

Page 40: ...Samsung Electronics 6 3 17 8 9 10 16 7 6 11 1 4 3 2 5 18 1 18 6 18 7 18 5 18 4 18 2 18 3 12 13 1 15 1 15 15 4 15 5 15 3 15 2 14 1 14 14 3 13 13 2 14 2 6 2 Outdoor Unit 6 2 1 18K BTU...

Page 41: ...ASS Y CONDENSER COVER CONTROL ASS Y CABI BACK TOP COVER COMPRESSOR COMPRESSOR GROMMET ISOLATOR NUT WASHER ASS Y 4WAY V V PACKED V V 1 2 4WAY V V ASS Y CHECK V V TUBE CAPI C PACKED V V 1 4 TUBE CAPI H...

Page 42: ...6 5 Samsung Electronics 6 2 2 24K BTU 17 8 16 7 6 11 1 4 3 2 5 10 18 1 18 6 18 7 18 4 18 2 18 3 12 13 1 15 1 15 15 4 15 5 15 3 15 2 14 1 14 14 3 13 13 2 14 2 9...

Page 43: ...ASS Y CONDENSER COVER CONTROL CABI SIDE OUT TOP COVER COMPRESSOR COMPRESSOR ASS Y 4WAY V V PACKED V V5 8 4WAY V V ASS Y CHECK V V TUBE CAPI C PACKED V V 1 4 TUBE CAPI H ASS Y CONTROL OUT ASS Y CONTROL...

Page 44: ...10790B PH M2 DB67 60061A DB67 60062A DB67 60063A 90 X 250 DB93 40179C DB61 40243A Description CASE UP CASE LOW DOOR REMOCON COVER BATTERY FILTER REMOCON RUBBER REMOCON INLAY LCD INLAY REMOCON LABEL RE...

Page 45: ...3 10599B DB26 10065B CASE CONTROL ASS Y MAIN PCB ASS Y MAIN PCB ASS Y MAIN PCB ASS Y MAIN PCB ASS Y THERMISTOR ASS Y PCB DISPLAY ASS Y PCB DISPLAY TRANSFORMER ABS PD Q24B1Q 03 PD Q24B1Q 06 PD Q24B1Q 0...

Page 46: ...6 9 Samsung Electronics MEMO...

Page 47: ...Cycle Block Diagram INDOOR UNIT OUTDOOR UNIT Heat exchanger Evaporator Gas side 3 way valve 2 way valve Liquid side Capillary tube Cooling Gas leak check point Heat exchanger Condenser Heating Capilla...

Page 48: ...Samsung Electronics 8 1 8 PCB Diagrams 8 1 Main PCB B B B...

Page 49: ...0262 3711 000879 3711 000940 3711 001038 3711 001036 3711 001154 B3068 0092 DE39 60001A DB47 90053A 2305 001027 Description FUSE HOLDER FUSE IC VOLT REGU HEAT SINK SCREW PH IC VOLT REGU C FILM FILTER...

Page 50: ...ASE CENTER PCB UP R CASE CENTER PCB LOW SEAL C T PCB UP SEAL C T PCB LOW A PCB DISPLAY LED LAMP LED LAMP LED LAMP LED LAMP JUMP WIRE MODULE REMOCON C CERAMIC R CARBON CONNECTOR WAFER C CERAMIC DIODE S...

Page 51: ...Samsung Electronics 9 1 9 Wiring Diagrams 9 1 Indoor Unit...

Page 52: ...amsung Electronics 9 2 9 2 Outdoor Unit MARK NAME MARK NAME 52C MAGNETIC CONTACTOR TB 1 2 TERMINAL BLOCK 20S SOLENOID COIL CH CRANK CASE HEATER C1 CAPACITOR FM1 FAN MOTOR F FUSE 2A 250V S SPARK KILLER...

Page 53: ...ay not in whole or in part be copied photocopied reproduced translated or converted to any electronic or machine readable from without prior written permission of Samsung Electronics Co Ltd SyncMaster...

Page 54: ...Samsung Electronics 10 1 10 Schematic Diagrams 10 1 Indoor Unit PNA4612MOOXD...

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