ROOM AIR CONDITIONER INDOOR UNIT AS070VE/DOK AS071VE/DOK AS074VE/DOK AS075VE/DOK AS090VE/DOK AS091VE/DOK AS094VE/DOK AS095VE/DOK AS120VE/DOK AS121VE/DOK AS124VE/DOK AS125VE/DOK SERVICE OUTDOOR UNIT AX070VE/DOK AX071VE/DOK AX074VE/DOK AX075VE/DOK AX090VE/DOK AX091VE/DOK AX094VE/DOK AX095VE/DOK AX120VE/DOK AX121VE/DOK AX124VE/DOK AX125VE/DOK Manual AIR CONDITIONER CONTENTS 1. Precautions 2. Product Specifications 3. Operating Instructions and Installation 4. Disassembly and Reassembly 5.
© Samsung Electronics Co., Ltd. JAN. 1998. Printed in Korea. Code No.
1. Precautions 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 equipment, and know how to use them. Using defective tools or test equipment may cause problems later-intermittent contact, for example. Fig. 1-1 Avoid Dangerous Contact 4.
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2. Product Specifications 2-1 Table Model Item Type Cooling Dehumiditying Performance AS090VE/AS091VE/AS094VE/AS095VE AS090VD/AS091VD/AS094VD/AS095VD AS120VE/AS121VE/AS124VE/AS125VE AS120VD/AS121VD/AS124VD/AS125VD Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit Indoor unit Outdoor unit Outdoor unit Outdoor unit Outdoor unit Outdoor unit Wall-mounting Wall-mounting Wall-mounting Wall-mounting Wall-mounting BTU/h 7500 7500 9000 9000 12000 12000 I/h 1.2 1.2 1.6 1.
2-2 Dimensions 2-2-1 Indoor Unit (Front view) (Remote control) Air in Air out (Rear view) Installation plate 2-2-1 Outdoor Unit (Front view) 2-2 (Rear view) Samsung Electronics
2-3 Low pressure & Current Data Indoor Unit : AS070VE/AS071VE AS074VE/AS075VE Outdoor Unit : AX070VE/AX071VE AX074VE/AX075VE 11 10 9 8 7 6 5 4 3 25 30 35 40 45 50 Outdoor Inlet air D. B. temp.(°C) 14 13 12 11 10 9 8 7 6 5 4 3 25 30 35 40 45 50 Outdoor Inlet air D. B. temp.
Product Specifications Indoor Unit : AS070VD/AS071VD AS074VD/AS075VD Outdoor : Unit AX070VD/AX071VD AX074VD/AX075VD 11 10 9 8 7 6 5 4 3 25 30 35 40 45 50 Outdoor Inlet air D. B. temp.(°C) 14 13 12 11 10 9 8 7 6 5 4 3 25 30 35 40 45 50 Outdoor Inlet air D. B. temp.
Product Specifications Indoor Unit : AS090VE/AS091VE AS094VE/AS095VE Outdoor : Unit AX090VD/AX091VE AX094VD/AX095VE 11 10 9 8 7 6 5 4 3 25 30 35 40 45 50 Outdoor Inlet air D. B. temp.(°C) 14 13 12 11 10 9 8 7 6 5 4 3 25 30 35 40 45 50 Outdoor Inlet air D. B. temp.
Product Specifications Indoor Unit : AS090VD/AS091VD AS094VD/AS095VD Outdoor Unit : AX090VD/AX091VD AX094VD/AX095VD 11 10 9 8 7 6 5 4 3 25 30 35 40 45 50 Outdoor Inlet air D. B. temp.(°C) 14 13 12 11 10 9 8 7 6 5 4 3 25 30 35 40 45 50 Outdoor Inlet air D. B. temp.
Product Specifications Indoor Unit : AS120VE/AS121VE AS124VE/AS125VE Outdoor Unit : AX120VE/AX121VE AX124VE/AX125VE 11 10 9 8 7 6 5 4 3 25 30 35 40 45 50 Outdoor Inlet air D. B. temp.(°C) 14 13 12 11 10 9 8 7 6 5 4 3 25 30 35 40 45 50 Outdoor Inlet air D. B. temp.
Product Specifications Indoor Unit : AS120VD/AS121VD AS124VD/AS125VD Outdoor Unit : AX120VD/AX121VD AX124VD/AX125VD 11 10 9 8 7 6 5 4 3 25 30 35 40 45 50 Outdoor Inlet air D. B. temp.(°C) 14 13 12 11 10 9 8 7 6 5 4 3 25 30 35 40 45 50 Outdoor Inlet air D. B. temp.
2-4 Refrigerating Cycle Block Diagram INDOOR UNIT OUTDOOR UNIT Capillary tube T 2-way valve Liquid side Heat exchanger (Evaporator) Heat exchanger (Condenser) T Gas side 3-way valve Compressor Cooling Gas leak check point Samsung Electronics 2-9
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3. Operating Instructions and Installation 3-1 Operating Instructions 3-1-1 Name & Function of Key in remote controller NO NAMED OF KEY FUNCTION OF KEY On/Off Button. Use this button to start and stop air conditioner. 1 2 (UP) Temp. up button. If the button is pressed once, the setting temperature is increased by 1°C (DOWN) Temp. up button. If the button is pressed once, the setting temperature is decreased by 1°C Each time you press this button, MODE is changed in the following order.
Operating Instructions and Installation 3-1-1 Name & Function of Key in remote controller 1. AUTO MODE : In this mode, operation COOL mode is selected automatically by the room temperature of initial operation. Operation Type Cool Operation Room Temp Tr≥ 24.5°C+∆T Compressor ON Tr≤ 24°C+∆T Compressor OFF ∆T= -1°, -2°C, 0°C+1°C+2°C ∆T is controlled by setting temperature up/down key of remote controller * FAN SPEED : AUTO 2.
Operating Instructions and Installation 8. COMPULSORY OPERATION : For operating the air conditioner without the remote controller. *AUTO : The operating is the same function that AUTO MODE in the remote controller. 9. SWING : BLADE-H is rotated vertically by the stepping motor.
3-2 Installation (Fix the unit firmly if it is mounted in a high place.) 3-2-1 Selecting Area for Installation Select an area for installation that is suitable to the customer's needs. 3-2-1(a) Indoor Unit 1. Make sure that you install the indoor unit in an area providing good ventilation. It must not be blocked by an obstacle affecting the airflow near the air inlet and the air outlet. 2.
Operating Instructions and Installation 3-2-2 Installation diagram of indoor unit and outdoor unit A Indoor unit gas leak test check point Piping may be laid to the rear, left, right or down .
Operating Instructions and Installation 3-2-2(a) Fixing the Installation Plate 1. Determine the position of the pipe and drain hose hole using the right figure and drill the hole with an inner diameter of 65mm so that it slants slightly downwards. Installation plate Pipe hole (ø65mm) 2. If you are fixing the indoor unit to a… Then follow Steps… Wall 3. Window frame 4 to 6. 3. Fix the installation plate to the wall in a manner appropriate to the weight of the indoor unit.
Operating Instructions and Installation 3-2-2(c) Connecting the Assembly Cable. The outdoor unit is powered from the indoor unit via the assembly 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 ten metres. 1. Extend the assembly cable if necessary. 2. Open the front grille by pulling on the tabs on the lower right and left sides of the indoor unit. 3. Remove the screw securing the connector cover. Indoor unit 4.
Operating Instructions and Installation 3-2-2(e) Outdoor unit installation Wiring connection 1. 2. 3. 4. 5. 6. Remove the cover-E parts. Firmly connect the cable connector in the terminal block. Fasten the M4 ring terminal to the hole marked Firmly fix the ass'y cable with clamp wire holder. Assemble the cover-E parts. To prevent the entry of water, form a trap of the ass'y cable as illustrated in the installation diagram of indoor and outdoor unit.
Operating Instructions and Installation 3-2-2(f) Flare Modification • Tools used Flare modification procedure 1) Cut the pipe using a pipe cutter. 2) Remove burrs at the tip of the pipe cut. Caution : Burrs not removed may result in leakage of gas. Pipe Oblique Raughness 3) Insert a flare nut into the pipe and modifty flare. Reamer Burr D Outer diameter ø6.35mm ø9.52mm ø12.7mm A A(mm) 1.3 1.8 2.
Operating Instructions and Installation 3-2-2(g) Air-Purge Procedure • Use the refrigerant of the outdoor unit to purge air inside indoor unit and pipe. 1. Remove the caps from the 2-way valve(B) and the 3-way valve(A). 2 Turn the 2-way valve cock approx. 45° counterclockwise to open it. Close it about 10 seconds later. Valve stem Valve stem Stopper 3 Check refrigerant leakage of each joint parts (A, B, C & D in right figure) not leaking Leaking If leaking, tighten the flare nut one more time.
Operating Instructions and Installation 3-2-2(h) Refrigerant Refill • Refill an air-conditioner with refrigerant when refrigerant has been leaked at installing or using 1. Purge air(for new installation only). 2. Turn the 3-way valve clockwise to close, connect the pressure gauge(low pressure side) to the service valve, and open the 3-way valve again. Suspension hook 3. Connect the tank to refill with Refrigerant Hand wheel 4. Set the unit to cool operation mode. 5.
Operating Instructions and Installation 3-2-2(i) Refrigerant Adjustment Class Connection Pipe Length 5m Max. At installation At service Air-Purge Method Refrigerant Adjustment Air-Purge Method Refer to the detailed Air-Purge Procedure Unnecessary Add 10g of refrigerant (R-22) for every 1m. 5~10m Purge air using a vaccum pump or an additional refrigerant cylinder. Refrigerant Quantity refer to specification sheet Add 10g of refrigerant (R-22) for every 1m.
Operating Instructions and Installation 3-2-2(k) "Pump down" Procedure • Pump down' shall be carried out when an evaporator is replaced or when the unit is relocated in another area. 1. Remove the caps from the 2-way valve and the 3-way valve. 2 Turn the 3-way valve clockwise to close and connect a pressure gauge(low pressure side) to the service valve, and open the 3-way valve again. 2-Way Valve 3. Set the unit to cool operation mode. (Check if the compressor is operating.) 4.
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4. Disassembly and Reassembly Stop operation of the air conditioner and remove the power cord before repairing the unit. 4-1 Indoor Unit No Parts 1 Front Grille Procedure Remark 1) Stop the air conditioner operation and block the main power. 2) Seperate tape of front panel upper. 3) Contract the second finger to the left, and right handle and pull to open the inlet grille. 4) Take the left and right filter out. * Take the Deadorizing and Electrostatic filter out.
Disassembly and Reassembly No Parts 2 Ass’y Tray Drain. 3 Electrical Parts (Main PCB) Procedure Remark 1) Do “1”, above. Separate the drain hose from the extension drain hose. 2) Take the display PCB out. (Center of indoor unit) 3) Loosen three fixing screws of left and right 4)Pull tray drain out from the back body. 1) Do “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.
Disassembly and Reassembly No Parts 3 Fan Motor and Cross Fan Procedure Remark 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 motor from the fan. 5)Separate the fan from the left holder bearing.
Disassembly and Reassembly 4-1 Outdoor Unit No Parts Procedure 1 Common Work 1) Loosen the fixing screw and separate the cover E-parts. 2) Separate the connection wire from the terminal block. Remark 3) Loosen three fixing screws and separate the upper cabinet. 4) Loosen the two fixing screws of Ass'y E-part. 5) Loosen seven fixing screws and separate the side cabinet. 2 4-4 Fan and Motor 1) Do “1”, above. 2) Loosen two fixing screw, of the front cabinet.
Disassembly and Reassembly No Parts Procedure Remark 4) Remove the nut flange (Turn to the right to remove, as it is a left hand screw) 5) Separate the fan. 6) Loosen four fixing screws to separate the motor. 3 Heat Exchanger 4 Compressor Samsung Electronics 1) Do “1”, above. 2) Loosen three fixing screws of left and right side. 3) Disassemble the inlet and outlet pipe by welding. 4) Separate the heat exchanger. 1) Do “1”, above.
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5. Troubleshooting 5-1 Items to be checked first 1) Is the voltage of the power correct? The input voltage shall be 198-264VAC. The airconditioner may not operate properly if the voltage is out of this range. 2) Is the link cable linking the indoor unit and the outdoor unit linked properly? The indoor unit and the outdoor unit shall be linked by 5 cables. Check the terminals if the indoor unit and outdoor unit are properly linked by the same number of cables.
5-2 Fault Diagnosis by Symptom 5-2-1 No Power (completely dead)-Initial diagnosis 1) Checklist : (1) Is input voltage normal? (198-264V~) (2) Is AC power linked correctly? (3) Are connections between primary side, secondary side of the power transformer and PCB good. (4) Is output voltage of DC regulator IC KA7812 (IC01) normal? (11VDC-12.5VDC) (5) Is output voltage of DC regulator IC KA7805 (IC02) normal? (4.5VDC-5.5VDC) 2) Troubleshooting procedure Remove power cord and plug in again in approx.
Troubleshooting 5-2-2 When the Indoor Unit Fan Does Not Operate. (Initial Diagnosis) 1) Checklist : (1) Is the indoor unit fan motor properly connected with the connector (CN73)? (2) Is the AC voltage correct? (3) Is HALL IC in indoor fan motor properly connected with the connector (CN43)? (4) Is the running capacitor properly connected with the terminal? 2) Troubleshooting procedure After unplugging out the power cord should be reconnected within five seconds.
Troubleshooting 5-2-3 When the Outdoor Unit Does Not Operate.
Troubleshooting 5-2-4 When the UP/DOWN Louver Moter Does Not Operate. (Initial Diagnosis) 1) Checklist : (1) Is input voltage normal? (198-264VAC) (2) Is the UP/DOWN louver motor properly connected with the connector (CN61)? 2) Troubleshooting procedure Remove power cord and plug in again in approx. 5 seconds. Y Is operating lamp blinking? Check as in the procedure "No Power parts". Refer to page 5-2.
Troubleshooting 5-2-6 If Operation By Remote Control Unit Is Impossible. (Initial Diagnosis) 1) Troubleshooting procedure Remove power cord and plug in again approx. 5 Seconds Is operation lamp blinking? N Y “ “ sound heard from the indoor unit when ON/OFF button on the remote control unit pushed? Y Check as in the procedure “NO Power parts”. Refer to page 5-2. Normal N Voltage of battery less than 2.5V (Remote Control Unit)? Y Replace battery.
5-3 PCB Inspection 5-3-1 Cautions for Part Replacement 1. The human body carries much static electricity. Before touching a part for repair, replacement or the similar purpose, be sure to touch a grounded metallic portion by hand to let the static electricity go through the matallic portion to the earth. Espectially when handling any micro computer or IC, carefully remove such static electricity before touching them. 2.
Troubleshooting 5-3-3 Detailed Procedure No. Malfunction 1 Pull out the power plug from the AC terminal and confirm the fuse on the PCB assembly 1. Is the broken? 2 Turn the power on. If lamp blinks trouble is not related to the items 1 through 4 on the right. Voltage check 3 4 5 5-8 Set operating mode when RMC switch pushed. Except for [FAN]mode and [TIMER] mode. Checking point (symptoms) Causes 1. Voltage over 2. Indoor unit fan motor short-circuit. 1.
5-4 Fault Diagnosis of Major Parts Diagnosis Parts Temp.Sensor Heat ex. Sensor Indoor Fan Motor Measure resistance with a tester.
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Exploded Views and Parts List ■ Parts List Q’TY No.
6-2 Outdoor Unit 25 25-1 26-1 6-3 26-2 Samsung Electronics
and Parts List ■ Parts List Q’TY No.
6-3 Remote Control & PCB Box 6-3-1 Remote Control Parts List No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 6-5 CODE NO Description DB93-30052B DB61-10144A DB61-10145A DB64-20054A DB63-10477A DB74-10084A DB73-20110B ASS’Y REMOCON CASE UP CASE LOW DOOR REMOCON COVER BATTERY FILTER REMOCON RUBBER REMOCON INLAY LCD INLAY REMOCON LABEL REMOCON LABEL DOOR SCREW TAP SPRING BATTERY SPRING BATTERY SPRING BATTERY PE BAG ASS’Y PCB REMOCON HOLDER REMOCON DB64-40166B DB68-10775A DB68-10777A PH-M2 DB67-60061A DB67
Exploded Views and Parts List 6-3-2 PCB Box 2-5 2-6 2-4 2-2 2-1 2-3 3-1 3 2 1 Parts List 7000 Q’TY 9000 12000 1 1 1 - 1 - - Ass'y main PCB - - 1 - DB93-10472A Ass'y main PCB - - - 1 2-1 DB09-10149A Micom MB89635R-466 1 1 1 2-2 DB32-10008D Thermistor-EVAP 103AT 240/240 1 1 1 2-3 DE26-20154A Trans-power AC230V DC17V 300mA 1 1 1 2-4 2306-000294 C-film CFS 99N 450VAC 155K 1 1 1 2-5 3501-001058 Power-relay DI1U DC12V 1 1 1 2-6 DE32-10037A Fuse 2
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PCB Diagrams • PART LIST No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 DESIGN LOCATION F701 F701 IC01 IC01 IC01 IC02 CR71 FT71 R903,904,905,906 R203 R202,301,409,501~509,513,518~521,601,604,606,902 R522 R523 R405,407 R201,204,405,401,402,404,603,606 R607 R602 R403 R910,912,913 R406,408 D101~105 SS71 BZ61 TN71 TN71 C202,402 C301,401 C102,104,201,203,403,404,501,502,
8-1(b) Main PCB-9000Btu(DB93-10486A) 12000Btu(DB93-10482A) 8-3 Samsung Electronics
PCB Diagrams • PART LIST No 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 DESIGN LOCATION F701 F701 IC01 IC01 IC01 IC02 CR71 FT71 R903,904,905,906 R203 R202,301,409,501~509,513,518~521,601,604,606,902 R522 R523 R405,407 R201,204,405,401,402,404,603,606 R607 R602 R403 R910,912,913 R406,408 D101~105 SS71 BZ61 TN71 TN71 C202,402 C301,401 C102,104,201,203,403,404,501,502,
8-2 ASS’Y DISPLAY & Module •DB93-10470A : AS070,071,090,091,120,121VE/D •DB93-10475A : AS074,075,094,095,124,125VE/D • PCB-DISPLAY (AS070,071,090,091,120,121VE/D) : DB41-10199A • PCB-DISPLAY (AS074,075,094,095,124,125VE/D) : DB41-10200A • PART UST No Description CODE-NO Specification Q’TY A LED - LAMP DB07-10022A LTL-52EG-002(ORG/GRN) 1 B LED - LAMP 0601-001059 SY5511 (YEL) 1 C LED - LAMP 0601-001060 SM5511 (GRN) 1 D LED - LAMP 0601-001196 SO5511 (ORG) 1 E CONNECTOR WAFER YWLA2
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9-2 Outdoor Unit • AX120/121/124/125VE CAPACITOR • • AX120/121/124/125VE: 0.9/30µF X 450VAC AX070/071/074/075VE CAPACITOR 9-2 AX090/091/094/095VE: 1.5/30µF X 450VAC AX120/121/124/125VD CAPACITOR • AX070/071/074/075VE: 1.5/25µF X 450VAC AX090/091/094/095VE CAPACITOR • AX070/071/074/075VD CAPACITOR • AX120/121/124/125VD: 1.2/30µF X 450VAC AX070/071/074/075VD: 1.7/20µF X 450VAC AX090/091/094/095VD CAPACITOR AX090/091/094/095VD: 1.
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UPDA TE LOG SHEET Application date Page Part# Note(Cause & Solution) S/Bulletin# Use this page to keep any special servicing information. (Service Bulletin, etc.) If only parts number changes, Just change parts number directly on parts list. And if you need more information, please see the service bulletin Copyright Trademarks ®œ 1995 by Samsung Electronics Co., Ltd. All rights reserved.
