Samsung AW126JB Service Manual Download Page 1

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ROOM AIR CONDITIONER

AW126JB/127JB
AW126JE/127JE
AW12A6JD/12A7JD

AIR CONDITIONER

CONTENTS

Precautions

Product Specifications

Installation and Operating
Instructions

Disassembly and Reassembly

Troubleshooting

Exploded Views and Parts List

Block Diagram

PCB Diagram

Wiring Diagram

10. Schematic Diagrams

SERVICE

Manual

FAN

COOL

POWER / MODE

Hour

AW126JB/front 6/27/98 10:37 AM Page 2

Summary of Contents for AW126JB

Page 1: ...R CONTENTS 1 Precautions 2 Product Specifications 3 Installation and Operating Instructions 4 Disassembly and Reassembly 5 Troubleshooting 6 Exploded Views and Parts List 7 Block Diagram 8 PCB Diagram 9 Wiring Diagram 10 Schematic Diagrams SERVICE Manual FAN COOL POWER MODE C Hour ...

Page 2: ... cord and avoid tapping 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 resistance between the power cord and the ground terminal The resistance must be greater than 30 megohms 7 Make sure that the grounds are adequate 8 Make sure that the installation condition...

Page 3: ...eep Timer mm mm Volt Hz A W FREON g BTU h BTU h W kg Row Type Row Type W Model µF VAC µF VAC hr Unit of Measure Window 600 X 394 X 595 715 X 470 X 655 220 240 Single 50 5 8 1 330 R 22 660 12 000 9 0 220 Single 60 6 3 1 330 200 220 Single 50 6 8 1 330 R 22 650 12 000 9 045 45 R 22 880 12 000 9 0 R 22 660 12 000 9 0 2 X 14 Blower 2 X 14 Propeller Fan 3 X 14 Propeller Fan 2 X 14 Propeller Fan Fan spe...

Page 4: ... Samsung Electronics 600 394 394 595 FAN COOL POWER MODE C Hour MODE Front view Side view Unit mm Mode selection Buttons FAN COOL Temperature adjustment buttons Timer setting buttons ON OFF Buttons Air flow swing button Fan speed adjustment Buttons HIGH LOW ...

Page 5: ...ixtures and other electrical appliances obtain a clearance of at least one meter 6 Make sure that you install the unit in an area which provides easy drainage for condensed water 7 Make sure that you install the unit in an area not exposed to rain or direct sunlight Install a separate sunblind if exposed to direct sun light 8 Do not install the unit in an area subjected to noise or vibration ampli...

Page 6: ...erature The compressor is turned off when ambient temperature set temperature 1 C The compressor is turned on when ambient temperature set temperature 1 C 2 Default value after power reset set temperature 18 C FAN SPEED HIGH 3 Set temperature indicating setting range 1 C interval from 18 C to 30 C 3 2 2 Fan operation mode 1 If Fan operation mode signal is received from remocon the compressor is im...

Page 7: ...ion of each temperature sensor open short Error mode display warning sound The operation status is off 2 The outdoor pipe thermistor error mode carry out checking only during heating operation and do not carry out checking during COOLING and FAN operation 3 2 4 Panel key operation Key operational function Key Type Power Mode 1 Operation mode change and POWER OFF in case of model option cooling onl...

Page 8: ...ent reserve OFF TIMER time blinking After setting of the convenient reserve OFF TIMER time ON Others OFF In case of set temperature display NO 1 7 seg LED display indicates temperature of the tens digit C F NO 2 7 seg LED display indicates temperature of the units digit C F In case of time OFF TIMER display NO 1 7 seg LED display indicates time of the tens digit NO 2 7 seg LED display indicates ti...

Page 9: ...2 3 897 4 026 4 161 4 300 4 444 4 594 4 749 4 912 5 080 5 256 5 439 5 630 5 828 6 033 6 246 6 468 6 699 6 941 7 192 7 455 7 729 8 015 8 313 Temperature C THERMISTOR RESISTOR Kohm 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0 1 2 3 4 5 6 7 8 9 8 622 8 944 9 281 9 632 10 000 10 380 10 780 11 200 11 630 12 090 12 560 13 060 13 570 14 120 14 680 15 280 15 900 16 550 1...

Page 10: ...onnected lines Replace compressor Inspect electrical wiring for defects and terminals for correct and secure connections Solder discharge line Corrective action Check refrigerant oil level Add oil as necessary Solder suction line Use nitrogen gas Perform soldering function Fillsystemwithnitrogengas Check for leakage Recharge system Recharge system Evacuate system Release nitrogen gas Problem Low o...

Page 11: ...igerant Refill 30cc 5 The high pressure side is filled up with oil after the vacuum is completed 6 When the refrigerant leaks it is generally not necessary to refill the oil if the leakage is not severe 4 2 Samsung Electronics Fill the transparent container with 10cc of oil and then conduct the test Refrigerant Cycle Normal Over heated Compressor damage Color Light Yellow Brown Dark brown Odor No ...

Page 12: ...own on both sides of the lower part of the cabinet pull it forward by about 30 and then lift it up for removal 1 Remove the screws on both sides of the cabinet to disconnect the cabinet and frame 2 Pull the handle on the front side of the bottom and remove the unit from the cabinet 1 Remove 6 screws and earth wire screw 2 Remove three lead wire assemblies 3 Remove the blade V and arm blade 4 Take ...

Page 13: ...ung Electronics No Part name Procedures Remarks Frame Up Case Cond Propeller Fan 1 Remove 10 screws on the Frame Up 1 Remove two screws on the bottom side and 5 screws on the case cond 2 Remove the nut flange and remove the propellr fan ...

Page 14: ...eassembly No Part name Procedures Remarks Blower Motor Cond Casing 1 Remove two screws on the clip motor and remove the clip motor 2 Move the motor blower toward the evap and lift up the motor blower from the frame low 1 Remove the cond casing ...

Page 15: ... unit is stopped as a result of completion of the sleep time Pull out the power plug for ten seconds and then insert it again Air flows but Check whether the Air filter is clogged with dust or is dirty no cooling Check whether the desired temperature is too high Set the desired temperature to a lower level than the current temperature Check whether it is in FAN mode The remocon does Check whether ...

Page 16: ...age of the trans normal AC 198V AC 264V Is the secondary voltage of the trans normal AC 13V AC 17V Is the F01 3 15A fuse blown Is the rectifying diode D101 D106 normal Are the IC01 KA7812 and IC02 KA7805 normal Is the voltage of DC 17V DC 23V applied at both ends of the C102 electrolytic condenser Is the voltage of DC 12V applied at both ends of the C104 electrolytic condenser Is the voltage of DC...

Page 17: ...d replace it Check the micom IC02 for a short and replace it Normal operation Check the micom IC02 for a short and replace it Replace the assembly panel PCB Replace the assembly panel PCB Y N Normal operation N N N N N N Y Y Y Y Y Y Y Turn off the power and then turn it on again five seconds later When the LED lamp is not operated When the TACT switch is not operated Is the voltage of the micom IC...

Page 18: ...el PCB Dose the Buzzer sound when the power on Check whether the COOL LED lamp is on and th operation starts when pressing the on off button of the remocon Is the battery voltage of the remocon above DC 2 7V Is the collector voltage of the remocon QT1 QT2 C2412 a square wave Does the X TAL RJ 455JB oscillate normally Is the input voltage of the micom IC02 No 26 pin of the assembly main PCB a aquar...

Page 19: ...L LED lamp is on and the operation starts when pressing the on off button of the remocon Is the IC03 MAIN PCB output normal When the compressor is ON IC03 MAIN PCB No 14 pin Low Does the relay RY71 operate normally When the compressor is ON the RY71 should operat Is the compressor normal Go to the clause No power Go to the clause when he remocon does not operate Check the IC03 MAIN PCB for short a...

Page 20: ...g the air swing button of the remote control Is the IC03 MAIN PCB output normal When the air swing motor is on IC03 MAIN PCB No 12 pin Low Does the relay RY 75 operate normally When the air swing motor is operated the RY74 should be operated Go to the clause No power Normal operation Check the IC03 MAIN PCB for a short and cold soldering Replace the IC03 MAIN PCB Check the relay coil resistance No...

Page 21: ...e COOL LED lamp is on and the operation starts when pressing the on off button of the remocon Is the IC03 MAIN PCB output normal When the fan motor is High IC03 MAIN PCB No 14 pin LOW When the fan motor is Low IC03 MAIN PCB No 15 pin LOW Does the relay RY 72 73 operate normally When the fan motor is High RY72 should operate When the fan motor is Low RY73 should operate Go to the clause No power Go...

Page 22: ...6 Exploded View and Parts List 6 1 Main unit 6 1 Samsung Electronics 25 1 7 6 5 13 2 3 4 9 8 11 12 14 4 3 2 1 5 6 7 14 15 18 16 17 13 9 8 10 11 12 19 21 20 24 22 23 27 26 10 ...

Page 23: ... 1 1 16 DB62 31741A TUBE CAPILLARY ASS Y ID1 7 L1200 1 1 1 1 1 1 1 17 DB96 10602A ASS Y TUBE CONNECTION ASS Y 1 1 DB96 10602B ASS Y TUBE CONNECTION AW126JE 1 1 1 1 DB96 10602C ASS Y TUBE CONNECTION AW122JB XAX 1 18 DB95 10065W ASS Y COMP 44B124IV1E6 1 1 1 DB95 10064D ASS Y COMP 48A124JV1E1 1 1 DB95 10063B ASS Y COMP 48A124MV1E5 1 1 19 DB72 50546A CLOTH SOUND T12 1 1 1 1 1 1 1 20 DB60 30028A NUT WA...

Page 24: ...Samsung Electronics 6 2 Ass y Control 6 3 1 7 6 5 9 8 13 2 3 4 12 14 10 11 ...

Page 25: ...CITOR SECC P TO 8 1 1 1 1 1 1 1 7 DB95 20065F SWING MOTOR M2LJ49ZU32 1 1 1 1 1 1 1 8 DB93 10502A ASS Y MAIN PCB AW126JE 1 1 1 1 1 1 1 9 DB93 10501A ASS Y PANEL PCB AW126JE 1 1 1 1 1 1 1 10 DB93 20188B C W DISPLAY AWH126JE 1 1 1 1 1 1 1 11 DB32 10051A THERMISTOR AWH126JE 1 1 1 1 1 1 1 12 DB64 70083A PANEL CONTROL E HIPS 1 1 1 1 1 1 1 13 DB64 40178A INLAY CONTROL E AW126JE 1 1 1 1 1 1 1 14 DB39 1008...

Page 26: ...cification Q TY Remarks DB93 30056B ASS Y REMOCON ARC 201 1 1 DB61 10150A CASE REMOCON UPP ABS 1 2 DB61 10145A CASE REMOCON LW ABS 1 3 DB73 20112B RUBBER BT NBR 1 4 DB93 10516B ASS Y REMOCON PCB AWH126JE 1 5 DB74 10084A FILTER REMOCON PC 1 6 DB63 10477A COVER BATTERY ABS 1 7 DB64 40108B INLAY FEMOCON PC 1 ...

Page 27: ... Electronics 7 1 7 Block Diagram 7 1 Refrigerating Cycle Block Diagram Capillay tube Check V V T1 T2 Heat exchanger Evaporator Heat exchanger Condenser Compressor 4 way valve Cooling Heating fan Propeller fan ...

Page 28: ...rcuit Remocon Single Receiving FAN SPEED HIGH LOW TEMP SETTING TIMER SETTING COOL FAN ON OFF AIR SWING Compressor Fan motor Power circuit DC 5V Power circuit DC 12V Down Trans AC13V AC17V Power input AC198V AC264V Oscillation Circuit LED CONTROL Mode COOL FAN Temperature Display Temp HR MICOM Remote Cotrol Room Temperature Sensor Receiving Unit of Remocon Air swing motor ...

Page 29: ... GND 1 P31 Vcc 64 2 P30 P32 63 3 P43 P33 62 4 P42 UI2 P34 61 5 P41 UO2 P35 60 6 P40 P36 59 7 P53 P37 58 8 P52 Vss 57 9 P51 BZ P00 56 10 P50 P01 55 11 P60 AN0 P02 54 12 P61 AN1 P03 53 13 P62 AN2 P04 52 14 P63 AN3 P05 51 15 P64 AN4 P06 50 16 P65 AN5 P07 49 17 P66 AN6 P10 48 18 P67 AN7 P11 47 19 AVcc P12 46 20 AVr P13 45 21 AVss P14 44 22 P74 P15 43 23 P73 INT3 P16 42 24 P72 INT2 P17 41 25 P71 INT1 P...

Page 30: ...8 1 Samsung Electronics 8 PCB Diagram 8 1 Main PCB ASS Y CODE NO DB93 10502A ...

Page 31: ...2 RY73 RY75 14 RELAY POWER DB47 90081A JM1aN DC12V 1 RY71 15 BUZZER DE30 20016A CBE 2220BA STICK 1 BZ601 16 VARISTOR 1405 000147 14D 471K 1 VA71 17 CONNECTOR WAFER 3711 000654 SMW250 12 1 CN11 18 CONNECTOR WAFER 3711 000203 YW396 03AV WHT 1 CN71 19 CONNECTOR WAFER 3711 003407 YW396 03AV RED 1 CN73 20 WIRE SO COPPER DE39 60001A PI 0 6 SN 52MM 4 J01 J04 21 PCB MAIN DE41 10428A AWH126JE 1 PCB 22 TRAN...

Page 32: ... 25 J01 J25 8 SW TACT V 3404 000280 KPT1115A 1 SW901 9 PCB PANEL DE41 10429A AWH126JE 1 PCB 10 R CARBON 2001 000776 RD 1 2 TP 471 7 R901 R907 11 LED DISPLAY DE07 20028A SSD A3202GMT S GRN 1 LE01 12 IC DRIVE DE13 20017A KID65003AP 1 IC04 13 C CERAMIC 2201 000796 1nF 50V 1 C203 14 R CARBON 2001 000429 RD 1 8 TP 102 J 2 R108 R201 15 R CARBON 2001 000003 RD 1 8 TP 331 J 2 R202 R203 16 C CERAMIC 2202 0...

Page 33: ...9 RJ455JB 1 XT1 4 TR CHIP A4050 0168 2SC2412 2 QT1 QT2 5 IR LED A4150 0168 SI5312 H 2 LDT1 6 C ELEC 61079 421 120 50V 4 7uF 1 CT3 7 C CERAMIC CHIP A4150 131 101 CL21C101J BNCS 1 CT1 8 C CERAMIC CHIP A4150 131 101 CL21C101J BNCS 1 CT2 9 R MG CHIP 61079 917 010 RMC 1 10 1 0 J 1 RT2 10 R MG CHIP 61079 917 564 RMC 1 10 330 J 1 RT3 11 R MG CHIP 61079 917 331 RMC 1 10 330 J 1 RT3 12 CHIP DIODE 32167 662...

Page 34: ... 9 Wiring Diagram 9 1 AW126JB 127JB 9 2 AW126JE 127JE 12A6JD 12A7JD 9 1 Samsung Electronics CAPACITOR 3 5 30µF 450VAC POWER SOURCE 220V 60Hz CAPACITOR 3 5 30µF 450VAC POWER SOURCE 200 220V 50Hz POWER SOURCE 220 240V 50Hz ...

Page 35: ...10 Schematic Diagrams 10 1 Main PCB Samsung Electronics 10 1 AW126JB 4 6 27 98 11 55 AM Page 1 ...

Page 36: ...10 2 Samsung Electronics 10 2 Remote Control ...

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