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Samsung AW126JB Service Manual

Other manuals for AW126JB: Owner's Instructions Manual

Summary of AW126JB

  • Page 1

    Room air conditioner aw126jb/127jb aw126je/127je aw12a6jd/12a7jd air conditioner 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 di...

  • Page 2: 1. Precautions

    1. Precautions samsung electronics 1-1 1. Warning: prior to repair, disconnect the power cord from the circuit breaker. 2. Use proper parts: use only exact replacement parts. (also, we recommend replacing parts rather than repairing them.) 3. Use the proper tools: use the proper tools and test equip...

  • Page 3: 2. Product Specifications

    2. Product specifications 2-1 table samsung electronics 2-1 item type dimensions: (width x height x depth) packing size (width x height x depth) voltage: phase frequency operating current power consumption refrigerant type refrigerant charge cooling capacity eer net weight condenser condenser fan ev...

  • Page 4

    2-2 dimensions 2-2-1 main unit 2-2-2 remote control 2-2 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 adjust...

  • Page 5

    3. Installation and operating instructions 3-1 installation samsung electronics 3-1 1. Make sure that you install the unit in an area that provides good ventilation. The air conditioner must not be blocked by any obstacle affecting the air flow near the air inlet and air outlet. 2. Make sure that yo...

  • Page 6

    3-2 function description 3-2-1 cooling operation mode 3-2 samsung electronics fan cool power / mode ° c hour remote control sensor temperature/timer settings temperature indicator timer indicator power/mode button operating mode indicator the compressor is turned on and off according to the ambient ...

  • Page 7

    3-2-3 led lamp and led display indication in case of error detection samsung electronics 3-3 error operation room thermistor (open or short) 7-seg led display e1 displayed led lamp display cool fan lamp blinking at every second (on for 0.5s and off for 0.5s) led lamp off 1. Set operation in case of ...

  • Page 8

    3-2-6 led lamp operation specifications lamp name operations specifications cool the mode is set to " cool " –> on others –> off fan the mode is set to " fan " –> on others –> off ˚c the set temperature is displayed or set -> on others –> off hr during setting of the convenient reserve (off timer) t...

  • Page 9

    3-5 samsung electronics 3-2-7 resistor values table of “room thermistor” for each temperature temperature [˚c] thermistor resistor [kohm] 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 2.229 2.296 2.365 2.437 2.512 2.589 2.6...

  • Page 10

    4. Disassembly and reassembly 4-1 compressor replacement flow chart samsung electronics 4-1 locate cause of defect release refrigerant disconnect electrical wiring from compressor cut refrigerant lines from compressor plug disconnected lines replace compressor inspect electrical wiring for defects, ...

  • Page 11

    4-2 checking the oil 4-2-1 oil quality 4-2-2 replacing and refilling the refrigerant oil 1. Replacing the compressor - do not fill the system with oil as the compressor is already charged. 2. Replacing the condenser - refill 50cc. 3. Replacing the evaporator - refill 50cc. 4. Replacing the refrigera...

  • Page 12

    4-3 disassembly and reassembly procedure samsung electronics 4-3 stop operating the air conditioner, and pull out the power cord before repair. No. Part name procedures remarks ① ➁ ➂ ass'y grill ass'y cabinet ass'y control 1. Pull the panel front and remove the screw on the grille 2. Hold the lower ...

  • Page 13

    Disassembly and reassembly 4-4 samsung electronics no. Part name procedures remarks ➃ ➄ 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 aw126jb-2 6/27...

  • Page 14

    Samsung electronics 4-5 disassembly and reassembly no. Part name procedures remarks ➅ ➆ 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 casi...

  • Page 15: 5. Troubleshooting

    5. Troubleshooting 5-1 basic checkpoints for troubleshooting samsung electronics 5-1 check the basic checkpoints first to determine whether it is machine trouble or a problem in the operation method. When it is not related to the basic checkpoints, perform checking in accordance with the procedures ...

  • Page 16

    5-2 troubleshooting by symptom 5-2-1 no power 5-2 samsung electronics 1) check points (1) is the voltage of the power source normal ? (ac 198v ~ ac 264v) (2) is the electric wire in good contact ?(cn 71, ry 71) (3) is the output voltage of the ic01(ka 7812) normal ?(dc 11.5v ~ dc 12.5v) (4) is the o...

  • Page 17

    5-2-2 when the assembly panel pcb is not operated samsung electronics 5-3 1) check points (1) is the voltage of the power source normal ?(ac 198v ~ ac 264v) (2) is the electric wire in good contact ?(cn71, ry71) (3) is the connection of the assembly main pcb, and assembly panel pcb in good contact? ...

  • Page 18

    5-2-3 when the remocon is not operated 5-4 samsung electronics 1) check points (1) is the voltage of the power source normal ? (ac 198 ~ ac 264v) (2) is the electric wire in good contact ? (cn71, ry71) (3) is the assembly main pcb in good contact with the assembly panel pcb?(cn11, cn12) (4) is the v...

  • Page 19

    5-2-4 when the compressor is not operated samsung electronics 5-5 1) check points (1) is the voltage of the power source normal ? (ac 198v ~ ac 264v) (2) is the desired temperature lower than the indoor temperature in the “cool” mode? (compressor stopped) (3) is the desired temperature higher than t...

  • Page 20

    5-2-5 when the air swing motor is not operated 1) check points (1) is the voltage of the power source normal ?(ac198v ~ ac264v) (2) is the electric wire in good contact ?(cn71, ry71) (3) is the swing motor connector in good contact?(cn71) (4) is the terminal connected to the swing motor in good cont...

  • Page 21

    Samsung electronics 5-2-6 when the fan motor does not operated 5-7 1) check points (1) is the voltage of the power source normal ?(ac198v ~ ac264v) (2) is the electric wire in good contact ?(cn71, ry71) (3) is the starting condenser in good contact? (4) is the fan motor connector in good contact?(cn...

  • 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 aw126jb-2 6/27/98 10:40 am page 12.

  • Page 23

    1 db64-10145a grille air inlet hips 1 1 1 1 1 1 1 2 db63-30142a guard air filter hips 1 1 1 1 1 1 1 3 db64-70080a panel front hips 1 1 1 1 1 1 1 4 db66-30169a blade-h pp 1 1 1 1 1 1 1 5 db96-40173a ass’y evap awh120je 1 1 1 1 1 1 1 6 db90-50133a ass’y frame low awh120je 1 1 1 1 1 1 1 7 db67-50073a b...

  • 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 aw126jb-2 6/27/98 10:40 am page 14.

  • Page 25

    Samsung electronics 6-4 ■ part list : ass’y control 0 db98-11178a ass’y control aw126jb - - 1 1 1 - - db98-11178c ass’y control aw126je 1 1 - - - 1 1 1 db61-10153a case control secc-p, to.8 1 1 1 1 1 1 1 2 db66-30170a blade-v pp 1 1 1 1 1 1 1 3 db66-70024a lever damper hips 1 1 1 1 1 1 1 4 db66-7002...

  • Page 26

    Samsung electronics 6-5 6-3 ass’y remocon(db93-30056c) 1 7 3 4 6 5 2 ■ part list no. Code no. Description specification 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 remoc...

  • Page 27: 7. Block Diagram

    Samsung 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 aw126jb-3 6/27/98 10:42 am page 3.

  • Page 28

    Samsung electronics 7-2 7-2 basic structure 7-2-1 micom control diagram a/d converter • air swing motor control • compressor control • buzzer control • temperature control reset circuit remocon single receiving fan speed(high,low) temp. Setting(▼▲) timer setting(▼▲) cool fan on/off air swing compres...

  • Page 29

    7-3 samsung electronics 7-2-2 micom pin assignment ( mb89635) vcc gnd gnd gnd gnd gnd gnd gnd test(time shortened) power/mode key gnd gnd gnd compressor high(fan motor) low(fan motor) 4-way swing motor gnd gnd nc(output port) model option temperature option gnd rs-232c rs-232c gnd gnd gnd buzzer gnd...

  • Page 30: 8. Pcb Diagram

    8-1 samsung electronics 8. Pcb diagram 8-1 main pcb ( ass'y code no : db93-10502a ) aw126jb-3 6/27/98 10:42 am page 6.

  • Page 31

    8-2 samsung electronics ■ part list no. Description code no. Specification q'ty remarks 1 ass’y main pcb db93-1010502a aw126jb 1 2 fuse de32-10037a fst 250v 3.15a 1 f01 3 diode rect 0402-000137 1n4007 6 d101~d106 4 ic volt regu de13-20008a ka7812 to-220ab 1 ic01 5 ic volt regu de13-20016a ka7805 to-...

  • Page 32

    Samsung electronics 8-2 display pcb (ass'y code no : db93-10501a) 8-3 ■ part list no. Description code no. Specification q'ty remarks 1 ass’y panel pcb db93-10501a aw126jb 1 2 led lamp db07-10021a ltl-4233(grn) 4 le03, le05, le06, le07 3 module remocon db32-50023a tsop1238tbi 1 rm41 4 connector wafe...

  • Page 33

    8-4 samsung electronics 8-3 ass’y pcb-remocon (ass’y code no : db93-10516b) ■ part list no. Description code no. Specification q'ty remarks 1 pcb a3083-043-00 49 x 113.52 x 1.6 1 2 ic ac09-10453k ks5180-19 1 ict1 3 resonator a1283-0069 rj455jb 1 xt1 4 tr-chip a4050-0168 2sc2412 2 qt1, qt2 5 ir-led a...

  • Page 34: 9. Wiring Diagram

    Samsung electronics 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 aw126jb-3 6/27/98 10:42 am page 10

  • 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 aw126jb-3 6/27/98 10:42 am page 11.