Samsung ASHM070VE Service Manual
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Samsung ASHM070VE Service Manual

Samsung ASHM070VE Service Manual

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SERVICE
AIR CONDITIONER

ROOM AIR CONDITIONER

INDOOR UNIT
OUTDOOR UNIT
ASHM070VE
AXHM260VE
ASHM120VE
Manual
I n s t a l l a t i o n
CONTENTS

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Summary of Contents for Samsung ASHM070VE

  • Page 1: Table Of Contents

    ROOM AIR CONDITIONER INDOOR UNIT OUTDOOR UNIT ASHM070VE AXHM260VE ASHM120VE Manual SERVICE AIR CONDITIONER CONTENTS 1. Pre c a u t i o n s 2. Product Specifications 3. Operating Instructions and I n s t a l l a t i o n 4.
  • Page 2 © Samsung Electronics Co., Ltd. MAY. 1998. Printed in Korea. Code No. DB81-10153A(1)

  • Page 3: Precautions

    . Fig. 1-3 No Kids Nearby! 1 0 . Be sure to clean the unit and its surro u n d i n g a re a . Fig. 1-4 Clean the Unit Samsung Electronics...
  • Page 4 M E M O Samsung Electronics...

  • Page 5: Product Specifications

    2. Product Specifications 2-1 Table Model ASHM260VE Item Indoor Unit Outdoor Unit A-UNIT B/C-UNIT A+B/C UNIT ASHM120VE ASHM070VE Type Wall-Mounting Cooling BTU/h 12,000 7,000 12,000 7,000x2 1 2 , 0 0 0 + 7 , 0 0 0 x 2...
  • Page 6 2-2 Dimensions 2-2-1 Indoor Unit (Remote control) (Front view) Air out Installation plate (Rear view) 2-2-1 Outdoor Unit (Front view) (Rear view) 1000 Samsung Electronics...
  • Page 7 2-3 Refrigerating Cycle Block Diagram Samsung Electronics...
  • Page 8 M E M O Samsung Electronics...
  • Page 9 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 10 De-ice end by sensing of the pro c e s s i n g varies depending on both the diff e re n c e time and outdoor unit’s heat exchanger between setting and the room temperature . t e m p e r a t u re by de-ice Condition. Samsung Electronics...
  • Page 11 When OFF timer button is pressed at oper- ating state, LCD displays the polling state s e q u e n t i a l l y. The LCD also displays the time re m a i n i n g . Samsung Electronics...
  • Page 12 . mode, it shall be in accordance with the o n / o ff control of B/C ro o m . Samsung Electronics...
  • Page 13 5 . When the operation is off, the step is is always off . 144/144 step (for balancing the pre s s u re ) . 5 . When the bypass valve is off, it is off after the positioning completion of pulse operat- ed expansion valve. Samsung Electronics...
  • Page 14 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 15: Installation Diagram Of Indoor Unit And Outdoor Unit

    Piping Tape vinyl B Drain hose installation Cut the piping hole sloped slightly Remote control Remote control holder Piping (Liquid) 1/4" Clamper tube A-UNIT Piping(Gas)1/2” Installation plate B/C-UNIT Piping(Gas)3/8” Installation tube Pipe-connection Vinyl tape Screw Putty Drain hose Samsung Electronics...
  • Page 16 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 17 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 18: Operating Instructions And

    4 Replace the terminal board cover, carefully tightening the screw. 5 connect the power cable to the auxiliary circuit breaker. A-unit B-unit C-unit Indoor unit Earth Earth Earth terminal terminal terminal Outdoor unit Earth terminal Circuit Breaker (Main Power) 3-10 Samsung Electronics...
  • Page 19 Drain hole Install drain line as following pro c e d u re . 1. Insert drain plug into hole and then connect drain hose to drain plug. Inside diameter of drain hose is 18mm Drain plug 3-11 Samsung Electronics...
  • Page 20 90° Oblique Raughness Burr Pipe Reamer 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 3-12 Samsung Electronics...
  • Page 21 It is not necessary to try to open it further. Valve cork 5 . S e c u rely tighten the valve stem cap with a Pipeline w rench or the like. Outdoor unit Low pressure hose Structure of 3-way valve 3-13 Samsung Electronics...
  • Page 22 8. Close the 3-way valve, disconnect the pressure gauge, and open the 3-way valve again. 3-3-2(i) Flare unt fixing torque 9. Close the cap of each valve. Torque (kg-cm) Outter diameter Fixing Torque Final Torque ø6.35(Liquid Side) ø9.52(Gas Side) ø12.7(Gas Side) 3-14 Samsung Electronics...
  • Page 23 7. Move the indoor and outdoor units to a new plug to avoid foreign material entering. l o c a t i o o n . 8. Remove the mounting plate for the indoor unit and move it to a new location. 3-15 Samsung Electronics...
  • Page 24 Cooling Capacity & Air Outlet Temperature Cooling Capacity Air Outlet Temp. 10000 9000 8000 7000 21/15 43/26 35/24 Outdoor Temperature(DB/WB) Cooling Capacity & Low Pressure Cooling Capacity Low Pressure 10000 9000 8000 7000 21/15 35/24 43/26 Outdoor Temperature(DB/WB) 3-16 Samsung Electronics...
  • Page 25 Vo l t a g e / F requency : 240V/50Hz Heating Capacity & Air Outlet Temperature Heating Capacity Air Outlet Temp. 10000 9000 8000 7000 Outdoor Temperature(DB/WB) Heating Capacity & High Pressure Heating Capacity High Pressure 10000 9000 8000 7000 Outdoor Temperature(DB/WB) 3-17 Samsung Electronics...
  • Page 26 Cooling Capacity & Air Outlet Temperature Cooling Capacity Air Outlet Temp. 13000 12000 11000 10000 21/15 43/26 35/24 Outdoor Temperature(DB/WB) Cooling Capacity & Low Pressure Cooling Capacity Low Pressure 13000 12000 11000 10000 21/15 35/24 43/26 Outdoor Temperature(DB/WB) 3-18 Samsung Electronics...
  • Page 27 Vo l t a g e / F requency : 240V/50Hz Heating Capacity & Air Outlet Temperature Heating Capacity Air Outlet Temp. 14000 13000 12000 11000 10000 Outdoor Temperature(DB/WB) Heating Capacity & High Pressure Heating Capacity High Pressure 14000 13000 12000 11000 10000 Outdoor Temperature(DB/WB) 3-19 Samsung Electronics...

  • Page 28: 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 29 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 30 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 31 1) Stop operating the air conditioner, and cut off the main power. 2) Remove the top cover. 3) Remove the electric cover, and then remove the connector of the indoor and outdoor unit. 4) Remove the cabi-side. 5) Remove the cabi-front. Samsung Electronics...
  • Page 32 Electric Box 1) Perform the work of clause ®Á. 2) Remove the electric wires and connectors connected to the electric box. 3) Loosen the clamping screw for the electric box, and then remove it from the partition. Samsung Electronics...

  • Page 33: Troubleshooting

    In case that the operation is made with the mixture of B unit and C unit(the cooling and heating are (RED) not operated simultaneously) *Example:one room-heating, one-room-cooling or drying Outdoor sensor Error (open or short) (GREEN) - Outdoor sensor - Pipe sensor A, B Samsung Electronics...
  • Page 34 - A unit : OPERATION LED on, TIMER LED flickering - B unit : OPERATION LED on, TIMER and FAN LED flickering - C unit : OPERATION LED on, TIMER and FAN, TURBO LED flickering UNIT OPERATION TIMER TURBO Lamp ON Lamp OFF Lamp Flasher Samsung Electronics...
  • Page 35 • Check the pipe pressure and the other operation status during the test operation. • Check items when the error occurs during the test operation (each unit) - Check there is enough refrigerant. - Check the pipe connections. Samsung Electronics...
  • Page 36 Restart is them possible. Once the test operation is completed, push switch S/W-A, S/W-B or S/W-C to finish the test. Once the test is completed, operate the indoor unit normally. Check the operation is normal. Start up is over. Samsung Electronics...

  • Page 37: Fault Diagnosis By Symptom

    IC (KA 7812) DC 10V and 12V? D105) and KA7812. Is the output voltage of electrostatic volt- KA7805 is out of order - replace age IC (KA 7805) DC 4.5 V - 5.5 V? Replace the main PCB of indoor unit Samsung Electronics...
  • Page 38 (D101 - D104) IC01 (KA 7812) is DC 12V. and KA 7812. Check whether the output voltage of Replace the IC 02 (KA7805) IC02 (KA 7805) is DC 5V. Replace the outdoor unit Ass'y main PCB. Samsung Electronics...
  • Page 39 Is the pin no. 16 of IC 06 (KID 65003) Replace the IC 06 (KID 65003) and the old type? SS71(G3MB202pl). 120Hz Is the pin no 24 of MICOM Replace Q401 (Ksc 945Y). the old type? Replace the indoor unit PCB Ass'y due to the Micom defect. Samsung Electronics...
  • Page 40 (3) Perform the comp ON/OFF control in the dry mode. (4) When it is under the operation of anti-freezing, overload protection, defrost operation, it may be Low, high or Off . (5) Hi = High speed, Low = Low speed Samsung Electronics...
  • Page 41 Does operation start when swing button of the remote con- Normal trol unit pushed? Voltage at pin #33-#36 of micom (ICO4) Micom (IC04) is faulty. change?(Squarewave) Volatge at pin #13, #14, #15, #16 of IC05 (KID65003) Driver IC05 (KID65003) is faulty. change?(Squarewave) UP/DOWN louver motor is faulty. Samsung Electronics...
  • Page 42 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. 5-10 Samsung Electronics...
  • Page 43 (3) When the C O M P B is under the defrost operating, it shall be in according to (1) and (2).(When the Heating operation) (4) When B comp is under the heating operating, SV - B Y is always off . 5-11 Samsung Electronics...
  • Page 44 (3) The changeover of heating to cooling : put the 4 way valve off immediately (in case of B and C ro o m ) . (4) The changeover of cooling to heating : it is on after 50 seconds delay. 5-12 Samsung Electronics...

  • Page 45: Indoor Unit Operation

    (1) Comp A measuring ; RY 73 (4) ↔ RY 72 (4) RY71 (2) Comp B measuring ; RY 71 (4) ↔ RY 72 (4) (3) Power input ; RY 72 (3) ↔ RY 7 3 ( 3 ) RY73 5-13 Samsung Electronics...

  • Page 46: 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. 5-14 Samsung Electronics...

  • Page 47: Samsung Electronics

    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) 5-15 Samsung Electronics...

  • Page 48: Fault Diagnosis Of Major Parts

    ∞, 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 5-16 Samsung Electronics...
  • Page 49 M E M O 5-17 Samsung Electronics...

  • Page 50: Exploded Views And Parts List

    6. Exploded Views and Parts List 6-1 Indoor Unit Samsung Electronics...
  • Page 51 ASS´Y BEARING ASS´Y DB93-10522A ASS´Y MAIN PCB ASS´Y DB93-10523A ASS´Y ” DB32-10008D ASS´Y-THERMISTOR ASS´Y DB65-40060A ASS´Y TERMINAL BLOCK ASS´Y DB63-10427B COVER TERMINAL DB61-60093A BODY-BUSH HIPS DB94-20030B ASS´Y BACK BODY ASS´Y DB61-40219A HOLDER PIPE HIPS DB70-10618A PLATE HANGER SGCC-M Samsung Electronics...
  • Page 52 6-2 Outdoor Unit Samsung Electronics...
  • Page 53 PARTITION SGCC-M DB63-10214B COVER-TOP SECC-P DB95-10062Y ASS'Y-COMP 48H124JV1E4 16-1 DB73-10004A GROMMET-ISOLATOR EPDM 16-2 DB60-30029A NUT-HEXAGON 16-3 DB60-30018A NUT-FLANGE P10.8 16-4 DB63-10165B COVER-TERMINAL NORYL DB91-20079A ASS’Y-OLP A MRA12030-12008 DB91-20080A ASS’Y-OLP B MRA12030-12008 DB75-30093A CONDENSER ASS'Y DB63-30110J SCREEN-GUARD P.E.H 100% Samsung Electronics...
  • Page 54 ART 90 DB68-10790A 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 90 250 PE BAG 90 250 DB93-40179C ASS’Y PCB REMOCON DB61-40243A HOLDER REMOCON Samsung Electronics...
  • Page 55 Exploded Views and Parts List 6-3-2 PCB Box Parts List Q’TY CODE NO Description Specification Remark ASHM070VE ASHM120VE DB61-10151A CASE-CONTROL DB93-10522A Ass'y main PCB DB93-10523A Ass'y main PCB DB09-10156A Micom MB89635R DB32-10008D Thermistor-EVAP 103AT 240/240 DE26-20154A Trans-power AC230V DC17V 300mA...
  • Page 56 M E M O Samsung Electronics...

  • Page 57: Block Diagrams

    BLOCK TURBO FAN SPEED SELECT • 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 Samsung Electronics...
  • Page 58 • Bypass-v/v control circuit • Test operation control OUTDOOR FAN(H, L) RESET CIRCUIT 4-WAY VALVE A OSCILLATION CIRCUIT TRST 4-WAY VALVE B DC POWER SWITCH CIRCUIT (+5V, +12V) Communication status display- BYPASS VALVE control POWER TRANSFORMER AC INPUT Samsung Electronics...
  • Page 59 M E M O Samsung Electronics...

  • Page 60: Pcb Diagrams

    8. PCB Diagrams 8-1 Main PCB-ASHM070VE(DB93-10522A) / ASHM120VE(DB93-10523A) Samsung Electronics...
  • Page 61 PCB Diagrams PART LIST DESIGN LOCATION CODE NO Description Specification ASHM070VE ASHM120VE 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 DE62-30032A HEAT-SINK AL H25 IC01 DE60-10100A SCREW-PH M3*6 FeFzY IC02 DE13-10016A...
  • Page 62 8-2 OUTDOOR PCB ( A S S ’ Y CODE NO : DB93-10525A) Samsung Electronics...
  • Page 63 CONNECTOR WAFER YW236-01 WHT CN91,CN92 3711-003247 CONNECTOR WAFER YW250-14 WHT CN61 3711-000999 CONNECTOR WAFER YW250-05 WHT CN62 3711-000997 CONNECTOR WAFER YW250-05 BLU GT01 3712-001062 CONNECTOR-TERMINAL GP88191-2 IC01 DE60-10100A SCREW-PH M3*G FeFzY IC01 DE62-30032A HEATSI-PH AL H25 DE41-10446A PCB-OUT FR-1 Samsung Electronics...
  • Page 64 DB41-10199A 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 PAINT DCR200H(BROWN) C-CERAMIC 2202-000780 CA OA 50V 104Z C-CERAMIC 2201-000283 CA OA 50V 102Z DIODE-SWITCHING 0401-000005 1N4148 R-CARBON 2001-000034 RD 1/4TP 221-J Samsung Electronics...

  • Page 65: Wiring Diagrams

    C O M P R E S S O R COMPRESSOR COMPRESOR COMPRESEUR COMPRESORE (RED) (RED) (ROJO) (ROSSO) (VERMELHO) NO CONECTADO CONNECTEUR GROUND GROUND MASA TERRE TERRA (GRN/YEL) (GRN/YEL) ( V E R D E / A M A R I L L O ) (VERT/JAUNE) (VERDEI/GIALLO) Samsung Electronics...
  • Page 66 G R E E N / Y E L L O W V E R D E / A M A R I L L O V E RT / J A U N E V E R D E / G I A L L O BROWN MARRON MARRON MARRONE SKY-BLU SKY-BLU AZULCIELOBLEU CLAIR BLU CIELO AMARILLO JAUNE GIALLO AZUL BLEU Samsung Electronics...
  • Page 67 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...

  • Page 68: Schematic Diagrams

    10. Schematic Diagrams 10-1 Indoor Unit 10-1 Samsung Electr onics...
  • Page 69 10-2 Outdoor Unit 10-2 Samsung Electr onics...
  • Page 70 10-3 Remote Control 10-3 Samsung Electr onics...

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