Samsung AS070VE Service Manual
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Samsung AS070VE Service Manual

Samsung AS070VE Service Manual

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SERVICE
AIR CONDITIONER

ROOM AIR CONDITIONER

INDOOR UNIT
OUTDOOR UNIT
AS070VE/DOK
AX070VE/DOK
AS071VE/DOK
AX071VE/DOK
AS074VE/DOK
AX074VE/DOK
AS075VE/DOK
AX075VE/DOK
AS090VE/DOK
AX090VE/DOK
AS091VE/DOK
AX091VE/DOK
AS094VE/DOK
AX094VE/DOK
AS095VE/DOK
AX095VE/DOK
AS120VE/DOK
AX120VE/DOK
AS121VE/DOK
AX121VE/DOK
AS124VE/DOK
AX124VE/DOK
AS125VE/DOK
AX125VE/DOK
Manual
I n s t a l l a t i o n
CONTENTS

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Summary of Contents for Samsung AS070VE

  • Page 1: Table Of Contents

    ROOM AIR CONDITIONER INDOOR UNIT OUTDOOR UNIT AS070VE/DOK AX070VE/DOK AS071VE/DOK AX071VE/DOK AS074VE/DOK AX074VE/DOK AS075VE/DOK AX075VE/DOK AS090VE/DOK AX090VE/DOK AS091VE/DOK AX091VE/DOK AS094VE/DOK AX094VE/DOK AS095VE/DOK AX095VE/DOK AS120VE/DOK AX120VE/DOK AS121VE/DOK AX121VE/DOK AS124VE/DOK AX124VE/DOK AS125VE/DOK AX125VE/DOK Manual SERVICE AIR CONDITIONER CONTENTS 1. Pre c a u t i o n s 2.
  • Page 2 © Samsung Electronics Co., Ltd. JAN. 1998. Printed in Korea. Code No. DB81-10123A(1)

  • Page 3: Precautions

    9 . Keep children away from the unit while it is being re p a i re d . Fig. 1-3 No Kids Nearby! 1 0 . Be sure to clean the unit and its surro u n d- ing are a . Fig. 1-4 Clean the Unit Samsung Electronics...
  • Page 4 M E M O Samsung Electronics...

  • Page 5: Product Specifications

    MST24AMN MST24AMM MRA12037 MRA12056 MRA12030 MRA98706 -12008 -12008 -12007 -12007 -12008 -12008 Cooling test Condition INDOOR UNIT : DB27°C WB19°C OUTDOOR UNIT : DB35°C WB24°C Maximum operation Condition INDOOR UNIT : DB32°C WB23°C OUTDOOR UNIT : DB43°C WB26°C Samsung Electronics...
  • Page 6 2-2 Dimensions 2-2-1 Indoor Unit (Front view) (Remote control) Air out Installation plate (Rear view) 2-2-1 Outdoor Unit (Rear view) (Front view) Samsung Electronics...
  • Page 7 A S 0 7 4 V E / A S 0 7 5 V E A X 0 7 4 V E / A X 0 7 5 V E Outdoor Inlet air D. B. temp.(°C) Outdoor Inlet air D. B. temp.(°C) Samsung Electronics...

  • Page 8: Samsung Electronics

    A S 0 7 4 V D / A S 0 7 5 V D A X 0 7 4 V D / A X 0 7 5 V D Outdoor Inlet air D. B. temp.(°C) Outdoor Inlet air D. B. temp.(°C) Samsung Electronics...
  • Page 9 A S 0 9 4 V E / A S 0 9 5 V E A X 0 9 4 V D / A X 0 9 5 V E Outdoor Inlet air D. B. temp.(°C) Outdoor Inlet air D. B. temp.(°C) Samsung Electronics...
  • Page 10 A S 0 9 4 V D / A S 0 9 5 V D A X 0 9 4 V D / A X 0 9 5 V D Outdoor Inlet air D. B. temp.(°C) Outdoor Inlet air D. B. temp.(°C) Samsung Electronics...
  • Page 11 A S 1 2 4 V E / A S 1 2 5 V E A X 1 2 4 V E / A X 1 2 5 V E Outdoor Inlet air D. B. temp.(°C) Outdoor Inlet air D. B. temp.(°C) Samsung Electronics...
  • Page 12 A S 1 2 4 V D / A S 1 2 5 V D A X 1 2 4 V D / A X 1 2 5 V D Outdoor Inlet air D. B. temp.(°C) Outdoor Inlet air D. B. temp.(°C) Samsung Electronics...

  • Page 13: Refrigerating Cycle Block Diagram

    2-4 Refrigerating Cycle Block Diagram INDOOR UNIT OUTDOOR UNIT Capillary tube 2-way valve Liquid side Heat Heat exchanger exchanger (Evaporator) (Condenser) Gas side 3-way valve Cooling Compressor Gas leak check point Samsung Electronics...
  • Page 14 M E M O 2-10 Samsung Electronics...

  • Page 15: Operating Instructions And

    Without regard to ON/OFF condition in remote controller, use this button to set current time. TIME Adjust the current time using button. (Data can be transmitted after setting up the time) Samsung Electronics...
  • Page 16 6. FAN SPEED : Manual (3 step), Auto (4 step) * P rotective function : Low temperature Fan speed automatically varies depending release. (Prevention against fre e z e ) on both the diff e rence between setting and the room temperature . Samsung Electronics...
  • Page 17 The LCD also displays the time re m a i n i n g . select, the compulsory operation mode, buzzer is sounded "beep" 11 . 24-Hour ON/OFF Real Setting Ti m e r. : The air conditioner is turned ON at a specified time using ON TIMER Samsung Electronics...
  • Page 18 It is harmful to the air conditioner if it is used in the following environments: greasy areas (including areas near machines), salty areas such as coast areas, areas where sulfuric gas is present such as hot spring areas. Contact your dealer for advice. Samsung Electronics...

  • Page 19: Installation Diagram Of Indoor Unit And Outdoor Unit

    200mm or more 250mm or more Cut the piping hole sloped slightly Remote control Remote control holder Piping (Liquid) 1/4" Clamper tube 7K/9K BTU Piping(Gas)3/8” Installation plate 12K BTU Piping(Gas)1/2” Installation tube Pipe-connection Vinyl tape Screw Putty Drain hose Samsung Electronics...
  • Page 20 Result : All inert gas escapes from the indoor unit. • To prevent dirt or foreign objects from getting into the pipes during installation, do NOT remove the caps completely until you are ready to connect the piping. Samsung Electronics...
  • Page 21 4. Pass the drain hose through the hole in the wall, making sure that it is sloping downwards, as shown in the illustrations above. The hose will be fixed permanently into position once Shield the whole installation has been tested for gas leaks; refer to page 16 for further details. Drain hose Extension drain hose Samsung Electronics...
  • Page 22 4. Firmly fix the ass'y cable with clamp wire holder. 5. Assemble the cover-E parts. 6. To prevent the entry of water, form a trap of the ass'y cable as illustrated in the installation dia- gram of indoor and outdoor unit. Cover-E parts Screw Samsung Electronics...
  • Page 23 Caution : Burrs not removed may result in leakage of gas. Pipe Reamer Oblique Raughness Burr 3 ) Insert a flare nut into the pipe and modifty flare . Outer diameter A(mm) ø6.35mm ø9.52mm ø12.7mm * Unproper flaring Inclined Surface Cracked Uneven damaged thickness Samsung Electronics...
  • Page 24 Liquid pipe side Gas pipe side 6. Open the 2-way valve and 3-way valve completely 2-way valve 3-way valve Outdoor Unit 7. Close the cap of each valve. 8. Check each valve for leakage. 3-10 Samsung Electronics...
  • Page 25 7. Stop operation of the air conditioner. 8. Close the 3-way valve, disconnect the pressure gauge, and open the 3-way valve again. 9. Close the cap of each valve. 3-11 Samsung Electronics...
  • Page 26 (R-22) for every 1m. (R-22) for every 1m. 3-2-2(j) Flare unt fixing torque Torque (kg-cm) Outter diameter Fixing Torque Final Torque ø 6.35 (9000Btu, 12000Btu) (Liquid Side) ø 9.52 (9000Btu) (Gas Side) ø 12.7 (12000Btu) (Gas Side) 3-12 Samsung Electronics...
  • Page 27 At this time, cover the pipe of the indoor 8. Remove the mounting plate for the indoor unit and the other pipe using a cap or vinyl unit and move it to a new location. plug to avoid foreign material entering. 3-13 Samsung Electronics...
  • Page 28 M E M O 3-14 Samsung Electronics...

  • Page 29: Disassembly And Reassembly

    7) Pull the upper left and right of discharge softly for the outside cover to be 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. Samsung Electronics...
  • Page 30 4) Separate the bush body at the upper side and holder at the rearside. 5) Loosen the two fixing screws of left side. 6) Lifting the heat exchanger up a little to push the up side for separation from the indoor unit. Samsung Electronics...
  • Page 31 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 motor from the fan. 5)Separate the fan from the left holder bearing. Samsung Electronics...
  • Page 32 Fan and Motor 1) Do “1”, above. 2) Loosen two fixing screw, of the front cabinet. 3) Push the brackets of the outer cover to sepa- rate the protection mesh from the rear side of front cabinet. Samsung Electronics...
  • Page 33 3) Disassemble the inlet and outlet pipe of com- pressor by welding. 4) Disassemble the inlet and outlet pipe of con- denser by welding 5) Loosen the three bolts of the lower part. 6) separate the compressor. Samsung Electronics...
  • Page 34 M E M O Samsung Electronics...

  • Page 35: Troubleshooting

    Indoor unit Room sensor Error (open or short) 3 O P E R ATING and TIMER LED blinking (1Hz) Indoor unit heat exchanger temperature sensor Error (open or short) 4 FAN LEA blinking (1Hz) Indoor fan malfunctioning (for spead is Below 38Orpm) Samsung Electronics...

  • Page 36: Fault Diagnosis By Symptom

    Replace Check PCB pattern . ICO2 10ms Replace main PCB. Is voltage output termina of D101~D105(IN4007) normal? Are voltage at #30 and #31 of the micom normal? Replace resonator (X501) 100ns Replace IN4007 Is operation normal? Replace micom Samsung Electronics...
  • Page 37 Is the supply voltage of the fan out of order. be replaced. motor sufficient? Test rod location Normal voltage PCB CN73 Condition Fan operate AC 180V MF-C is out of order Replace MFC Fan motor Fan motor should be is out of order. replaced. Samsung Electronics...
  • Page 38 Tap(TB71) and RY 71 terminal No. 3 Outdoor unit is out of order. 1 NO 2 NO Is the room sensor normal register? 10°C 20°C 30°C 17.96k Ω 12.09k Ω 8.3k Ω YES 3 Samsung Electronics...
  • Page 39 Is the munber #15 of IC07 (KID65003) LOW? Abnormal IC07 Is the voltage between CN71 #3 and RY71 NO AC198~264? Abnormal RY73 Abnormal 4way valve of Outdoor Unit. or connecting Cable PCB should be replaced. 4 way valve should be replaced or connecting Cable Check. Samsung Electronics...
  • Page 40 Voltage at PIN #30 of Remocon Micom change? Voltage at collecter of Q601 or Q602 change? Q601(C4375Y) or Q602(C1623Y) is faulty. IR LED(CL-1L5EU) is faulty. Voltage at pin #26 of micom (IC04) change (INDOOR UNIT)? Receiver module is faulty. Micom (IC04) is faulty. Samsung Electronics...

  • Page 41: Pcb Inspection

    The parts should be replaced in the following pro c e d u re . Check for any faulty part. Detach the faulty part. Replace it with a new part. Check the operation of the new part. The repair is completed. Samsung Electronics...
  • Page 42 1. Indoor unit fan motor is faulty. RMC switch pushed. above 180V~ 1. [FAN] mode 2. Fan speed [Hi] 2. Indoor unit fan motor does not operate. 2. Poor connection of indoor fan motor 3. Continuously operation and connector of RPM sensing (CN43) Samsung Electronics...

  • Page 43: Fault Diagnosis Of Major Parts

    Black, Red ∞, O Ω … open or short Abnormal Measure resistance between red wire and each terminal. Stepping Motor Normal Approx. 380Ω at ambient temperature (20°C ~30°C) (UP/DOWN swing motor) ∞, O Ω … open or short Abnormal Samsung Electronics...

  • Page 44: Exploded Views And Parts List

    6. Exploded Views and Parts List 6-1 Indoor Unit Samsung Electronics...
  • Page 45 Exploded Views and Parts List Parts List Q’TY CODE NO Description Specification Remark AS070VE AS071VE AS074VE AS075VE AS090VE AS091VE AS094VE AS095VE AS120VE AS121VE AS124VE AS125VE AS070VD AS071VD AS074VD AS075VD AS090VD AS091VD AS094VD AS095VD AS120VD AS121VD AS124VD AS125VD DB64-10140A GRILLE AIR INLET DB64-10143A ”...
  • Page 46 6-2 Outdoor Unit 25-1 26-1 26-2 Samsung Electronics...
  • Page 47 INSUL CABI-SIDE FOAMPE+FOAM PU DB90-10024D ASSY-CABI SIDE SECC-P DB63-10443A ASSY-COVER E, PARTS ASS´Y DB39-20388A ASSY-CABLE BAG RUBBER DB39-20387A VINYL 26-1 DB99-90033A ASSY-FLARE NUT 1/4” + 1/2” DB99-90033B 1/4” + 3/8” 26-2 DB60-30010A FLARE-NUT 1/4” DB60-30010B 3/8” DB60-30010C 1/2” Samsung Electronics...

  • Page 48: Remote Control

    LABEL DOOR ART 90 PH-M2 SCREW TAP PH-M2 DB67-60061A SPRING BATTERY SUS 304 DB67-60062A SPRING BATTERY SUS 304 DB67-60063A SPRING BATTERY SUS 304 90 x 250 PE BAG 90 x 250 DB93-40179B ASS’Y PCB REMOCON DB61-40243A HOLDER REMOCON Samsung Electronics...
  • Page 49 AC230V DC17V 300mA 2306-000294 C-film CFS 99N 450VAC 155K 3501-001058 Power-relay DI1U DC12V DE32-10037A Fuse 250V 3.15A AS070,071 VE/D DB93-10470A Ass'y-display and Remocon Module 090,091 VE/D 120,121 VE/D AS074,075,094,095 DB93-10475A Ass'y-display and Remocon Module 124,125 VE/D DB32-50021A Module-remocon TSOP1238UU1 Samsung Electronics...
  • Page 50 M E M O Samsung Electronics...

  • Page 51: Block Diagrams

    STEPPING MOTOR STEPPING MOTOR DRIVE BLADE-H BUZZER DRIVE BUZZER • MOVING SELECT DC 5V DC 12V VOLTAGE REGULATOR ON, OFF TIMER SELECT TEMPERATURE SELECT SLEEP SELECT TIME SETTING AC INPUT POWER TRANSFORMER DR : 200-220V/50Hz ER : 220-240V/50HZ Samsung Electronics...

  • Page 52: Pcb Diagrams

    8. PCB Diagrams 8-1(a) Main PCB-7000Btu(DB93-10484A) Samsung Electronics...
  • Page 53 PCB Diagrams • PART LIST ASH070VE/D AS070VE/D AS070VB ASH071VE/D AS071VE/D AS071VB ASH074VE/D AS074VE/D AS074VB DESIGN LOCATION CODE NO Description Specification ASH075VE/D AS075VE/D AS075VB F701 DE32-10037A FUSE FST 250V 3.15A F701 DE47-40024A HOLDER-FUSE FH-51H 7.5A IC01 DE13-20008A IC-VOLT REGU KA7812A IC01...
  • Page 54 8-1(b) Main PCB-9000Btu(DB93-10486A) 12000Btu(DB93-10482A) Samsung Electronics...
  • Page 55 WIRE SO COPER OP01 DE39-60001A WIRE SO COPER PI0.6 SN T 52MM OP02 DE39-60001A WIRE SO COPER PI0.6 SN T 52MM OP03 DE39-60001A WIRE SO COPER PI0.6 SN T 52MM OP04 DE39-60001A WIRE SO COPER PI0.6 SN T 52MM Samsung Electronics...
  • Page 56 FR-1T1.6 W20L170 MODULE REMOCON DB32-50021A TSOP-1238UU1 C/W DIS & MODULE DB39-20346A CASE-CENTER PCB DB61-10143A AS074,075,094,095,124,125VE/D DB61-10137A AS070,071,090,091,120,121VE/D PAINT DCR200H(BROWN) C-CERAMIC 2202-000780 CA OA 50V 104Z C-CERAMIC 2201-000283 CA OA 50V 102Z DIOD-SWITCHING 0401-000005 1N4148 R-CARBON 2001-000034 RD 1/4TP 221-J Samsung Electronics...

  • Page 57: Wiring Diagrams

    9. Wiring Diagrams 9-1 Indoor Unit Samsung Electronics...
  • Page 58 CAPACITOR AX120/121/124/125VE: 0.9/30µF X 450VAC CAPACITOR AX120/121/124/125VD: 1.2/30µF X 450VAC AX070/071/074/075VE AX070/071/074/075VD • • CAPACITOR AX070/071/074/075VE: 1.5/25µF X 450VAC CAPACITOR AX070/071/074/075VD: 1.7/20µF X 450VAC AX090/091/094/095VE AX090/091/094/095VD • • CAPACITOR AX090/091/094/095VE: 1.5/30µF X 450VAC CAPACITOR AX090/091/094/095VD: 1.7/30µF X 450VAC Samsung Electronics...
  • Page 59 M E M O Samsung Electronics...
  • Page 60 M E M O Samsung Electronics...

  • Page 61: Schematic Diagrams

    10. Schematic Diagrams 10-1 Indoor Unit 10-1 Samsung Electronics...
  • Page 62 10-2 Remote Control 10-2 Samsung Electronics...
  • Page 63 And if you need more information, please see the service bulletin Copyright Tr a d e m a r k s Samsung is a registered trademark and ®œ 1995 by Samsung Electronics Co., Ltd. SyncMaster 17GLi/CMG7387L and All rights reserved. MacMaster...

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