ROOM AIR CONDITIONER INDOOR UNIT AD24A1(B1)E12 AD18A1(B1)E09 AD19A1(B1)E07 AD19A1(B1)E12 SERVICE OUTDOOR UNIT UD24A1(B1)E2 UD18A1(B1)E2 UD19A1(B1)E2 Manual AIR CONDITIONER CONTENTS 1. Precautions 2. Product Specifications 3. Operating Instructions and Installation 4. Disassembly and Reassembly 5. Troubleshooting 6. Exploded Views and Parts List 7. PCB Diagrams 8. Wiring Diagrams 9.
© Samsung Electronics Co., Ltd. NOV. 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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4. Disassembly and Reassembly Stop operation of the airconditioner and remove the power plug from the wall outlet 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 the 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.
Disassembly and Reassembly No Parts Procedure 2 Filter Frame 1) Loosen the left and right screw of the Holder Filter, and Separate the Holder Filter. 3 Ass'y Tray Drain 1) Do " 1 2 ", above. Separate the holder at the rear side of Indoor unit. Remark 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. 4 Main PCB 1) Do " 1 2 ", above 2) Take all the connector of PCB upper side out.
Disassembly and Reassembly No Parts 5 Heat Exchanger Procedure Remark 1) Do " 1 2 3 4 ", above. 2) Loosen the left screws of the heat exchanger. Lifting the heat exchanger up a little to push the up side for separation from the indoor unit 6 Fan Motor and Cross Fan 1) Do " 1 2 3 4 5 ", above. 2) Loosen the fixing two screws and separate the motor holder. 3) Loosen the fixing screw of motor fan. (By use of M3 wrench) Separate the motor from the fan. Separate the fan motor the left holder bearing.
4-2 Outdoor Unit No Parts 1 Cabinet Procedure 1) Turn off the unit and remove the power cable 2) Remove the top cover. 3) Remove the control box cover. 4) Unplug the ass'y cable. 5) Remove the cabi-side. 6) Remove the cabi-front. * When you assemble the parts, check if the each parts and electric connectors are fixed firmly. Remark 2 Fan Motor & Propeller Fan 1) Do Procedure 1 above. 2) Remove the nut flange.
3. Operating Instructions and Installation 3-1 Operating Instructions 3-1-1 Name & Function of Key in remote controller NO FUNCTION OF KEY NAME 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. down 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(a) Heat Pump 1. AUTO MODE : In this mode, operation mode(COOL, HEAT, DRY) is selected automatically by the room temperature of initial operation. Room Temp Operation Type Tr≥ 21°C+∆T Cool Operation (Set Temp:AUTO SETTING) 21°C +∆T>Tr Heat Operation (Set Temp : 22°C+∆T) ∆T= -2°C, -1°C, 0°C, +1°C, +2°C ∆T is controlled by setting temperature up/down key of remote controller 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 3-2-1 Selecting Area for Installation Select an area for installation that is suitable to the customer's needs. 3. 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. Make sure that you install the indoor unit in an area allowing good air handling and endurance of vibration of the indoor unit. 3.
Operating Instructions and Installation 3-2-2 Installation diagram of indoor unit and outdoor unit A Indoor unit gas leak test check point Indoor unit 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. 4.
Operating Instructions and Installation 3-2-2(e) Outdoor unit installation GAS LEAK TEST Outdoor unit check point Indoor unit check point Check for gas leak from the flare nut connections with leak detector. WIRING CONNECTION Two electric cables must be connected to the outdoor unit: • The assembly cable connecting the indoor unit to the outdoor unit. • The power cable connecting the auxiliary circuit breaker to the outdoor unit. 1 Remove the terminal board cover on the side of the outdoor unit.
Operating Instructions and Installation Installation of drain line In heating and ”de-ice” operation, condensed water may be generated. Install drain line as following procedure. Drain hole 1. Insert drain plug into hole and then connect drain hose to drain plug. • Inside diameter of drain hose is 18mm Drain plug Grounding (The parts for this work are optional) • A grounding terminal can be found on the outdoor unit as illustrated. 1. When an existing grounding terminal is avilable.
Operating Instructions and Installation 3-2-2(f) Flare Modification • Tools used Flare modification procedure 1) Cut the pipe using a pipe cutter. 90° Oblique Raughness 2) Remove burrs at the tip of the pipe cut. Caution : Burrs not removed may result in leakage of gas. Burr Pipe Reamer 3) Insert a flare nut into the pipe and modifty flare. D A Outer diameter ø6.35mm ø9.52mm ø12.7mm A(mm) 1.3 1.8 2.
Operating Instructions and Installation 3-2-2(g) Air Purging CAUTION The air in indoor unit and in the pipe must be purged. If air remains in the refrigeration pipes, it will affect the compressor, reduce to cooling/heating capacity, and could lead to a malfuction. Refrigerant for air purging is not charged in the outdoor unit. Use additional refrigerant as shown at the right figure. Each unit must be purged in turn 1. Check the piping connections 2.
Operating Instructions and Installation 3-2-2(h) Refrigerant Refill If connecting pipe of more than 10 metres is installed, additional refrigerant should be charged by extra metre. You don’t have to charge additional refrigerant up to 10 metres of connecting pipe. 1. Remove the valve stem cap and service port of 3-way valve. 2. Connect the charging hose of low pressure side of Manifold gauge to the packed valve having a charging port(1/2” Packed valve) as shown at the right figure. 3.
Operating Instructions and Installation 3-2-2(j) Pump down 1. Confirm that both the 2-way and 3-way valves are set to the open position. (1) Remove the valve stem caps. (2) Be sure to use a hexagonal wrench to operate the Gas side valve stems. 2. Operate the unit for 10 to 15 minutes. 3. Stop operation and wait for 3 minutes, then connect the charge set to the service port of the 3-way valve. (1) Connect the charge hose with the push pin to the service port. 2-Way Valve 4. Air purging of the charge hose.
Operating Instructions and Installation 3-2-3 Technical Document 3-2-3(a) AD24A1(B1)E12 / AD19A1(B1)E12 •Cooling Characteristics - Outdoor Temperature Test Condition Indoor Unit (DB/WB) : 27/19 Voltage/Frequency : 240V/50Hz •In case of 2Unit, Capacity & Current multiplied by 2 Cooling Capacity & Air Outlet Temperature Cooling Capacity Air Outlet Temp 13000 15 12000 14 11000 21/15 21/19 35/24 43/26 13 Outdoor Temperature(DB/WB) Current & Low Pressure Current Low Pressure 7 7 6 6 5 5 4
Operating Instructions and Installation •Heating Characteristics - Outdoor Temperature Test Condition Indoor Unit (DB/WB) : 20/15 Voltage/Frequency : 240V/50Hz •In case of 2Unit, Capacity & Current multiplied by 2 Heating Capacity & Air Outlet Temperature Heating Capacity Air Outlet Temp 14000 44 13000 42 12000 40 11000 38 10000 36 9000 34 8000 32 7000 7/6 2/1 -5/-6 30 Outdoor Temperature(DB/WB) Current & Low Pressure Current Low Pressure 7 22 6 17 5 12 4 7 7/6 2/1 -5/-6 O
Operating Instructions and Installation 3-2-3(b) AD18A1(B1)E09 / AD19A1(B1)E07 • Cooling Characteristics - Outdoor Temperature Test Condition Indoor Unit(DB/WB) : 27/19 Voltage/Frequency : 240V/50Hz Cooling Capacity & Air Outlet Temperature Cooling Capacity Air Outlet Temp.
Operating Instructions and Installation • Heating Characteristics - Outdoor Temperature (B or C Indoor Unit Only) Test Condition Indoor Unit(DB/WB) : 20/15 Voltage/Frequency : 240V/50Hz Heating Capacity & Air Outlet Temperature Heating Capacity Air Outlet Temp.
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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 the rating Voltage ±10% range. 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 4 cables. Check the terminals if the indoor unit and outdoor unit are properly linked by the same number of cables.
5-2 Checking and Testing Operations (Outdoor Unit) To complete the installation, perform the following checks and tests to ensure that the air conditioner is operating correctly. INDOOR UNIT 1.
Troubleshooting DISPLAY EXPLANATION Outdoor sensor error (Short/Open) REMARK Be sure to check after applying the power to the outdoor unit. Outdoor A cond pipe sensor er ror (Short/Open) Outdoor B cond pipe sensor er ror (Short/Open) Outdoor C cond pipe sensor er ror (Short/Open) A unit test operation error B unit test operation error Display when the test operation finishes.
Troubleshooting 4. Check the test operation status by pressing the PCB switch S/W-A and S/W-B of outdoor unit. • Check the operation status by pushing the switch one at time. • Perform the test operation only for the unit selected last. • 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 pipe connections.
5-3 Fault Diagnosis by Symptom 5-3-1 When the power voltage is not available 1) Inspection items (1) Is the power voltage is normal? (The rating voltage ±10% range) (2) Is the power cord is correctly connected and is the contact good? (3) Does the sound “ting” come out with the operation lamp (green) flickering when the power is applied? If it is not flickering, do inspect and repair in accordance with the following inspection sequence.
Troubleshooting 5-3-2 No Power (Outdoor unit) 1) Inspection items (1) Á Is the power source normal (The rating Voltage ±10% range)? (2) Is the outdoor power connected normally? ((1) of terminal : L, (2) of terminal : N, (3) of terminal : communication) ? (3) Check whether the display of outdoor PCB(SEG1) is shown in the order of A- B - C when the power is applied.
Troubleshooting 5-3-3 When the fan of indoor unit does not operate 1) Inspection items (1) Is the power voltage normal? (2) Is the connector of indoor fan with the good contact? (CN73) (3) Is the soldering status of running condenser (CR71) with the good contact? (4) Is connector of the Hall IC with the good contact (CN 43) ? (5) Is the indoor fan rotating when it is under operation mode? (6) Is the FAN LED (green) flickering when the indoor fan stalled (for more than 15 seconds) and the trouble condition
Troubleshooting 5-3-4 When the outdoor unit fan does not operate 1) Inspection items (1) The outdoor unit fan motor operates only when the operating conditions are satisfied and is selected by the RY74(LOW) and PY75(HI) to rotate.
Troubleshooting 5-3-5 When the UP/DOWN Louver Moter Does Not Operate. (Initial Diagnosis) 1) 2) Checklist : (1) Is input voltage normal? (2) Is the UP/DOWN louver motor properly connected with the connector (CN61)? 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 5-6.
Troubleshooting 5-3-6 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 5-6. Normal N Voltage of battery less than 2.5V (Remote Control Unit)? Y Replace battery.
Troubleshooting 5-3-7 When the 4 way valve (A,B) is not operating 1. Inspection items (1) Are the 4 way valve A and B under the operating conditions? (When the COMP A (4 way valve A ) and COMP B (4 way valve B) are on during the heating operating) (2) Is the power voltage normal? (3) Is the connecting of 4 way valve A (CN 75) and B (CN 76) good? 2) Inspection sequence Put off the outdoor unit power and put it on again after 5 seconds. Select the heating operation of A(B) room by the remote controller.
Troubleshooting 5-3-8 When the compressor does not operate 1) Inspection items (1) Is the COMP A under the operating conditions? (cooling operating of A, B(C) room) (2) Is the power voltage normal? (AC 198- AC 264V) (3) Are the connector connection of COMP A(RY 72, 73) and B(RY 71) good? (4) The COMP A(B) is operated on and off in accordance with the operating conditions of indoor unit of A (B. C) room. 2) Inspection sequence Apply the outdoor power and operate the indoor unit A(B.,C) in the cooling mode.
5-4 PCB Inspection 5-4-1 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 5-4-3 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 Set TURBO operating mode when RMC switch pushed after a delay of 3 minutes. (A-unit and B-unit) Set operating mode when RMC switch pushed. 1. TURBO mode Checking point (symptoms) Causes 1. Voltage over 2.
5-5 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 No.
6-2 Outdoor Unit (UD24A1(B1)E2) 6-2-1 UD24A1(B1)E2 8-2 10(10-1~10-3) 8-2 9 (9-1~9-3) 17(17-1,16-1) 16(16-1,17-1) 12(12-1~12-6) 15 (15-1~15-5) 5(5-1) 18 6(6-1~6-2) 13(13-1 ~13-1) 8(8-3) 4 7 11 13(13-1~13-5) 14 1(1-1) 6-3 Samsung Electronics
Exploded Views and Parts List ■ Parts List No.
Troubleshooting 6-2-2 UD18A1(B1)E2/UD19A1(B1)E2 10(10-1~10-3) 19 9(9-1~9-3) 8-2 18 16(16-1,17-2) 8-1~8-3 17(17-1,16-1, 16-2) 12(12-1~12-6) 8-1 14(14-1) 13(13-1) 15(15-1~15-5) 4 7 3 11 2 6 1(1-1) 5(5-1) 8 6-5 Samsung Electronics
Troubleshooting ■ Parts List No.
6-3 Remote Control & PCB Box 6-3-1 Remote Control ■ Parts List No CODE NO Description 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 DB93-30071H DB61-10144A DB61-10145A DB64-20054A DB63-10477A DB74-10084A DB73-20110B DB64-40167A DB64-40166B DB68-10775A DB68-10777A PH-M2 DB67-60061A DB67-60062A DB67-60063A 90 250 DB93-40179B DB61-40243A ASS’Y CODE 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 BATTER
Exploded Views and Parts List 6-3-2 PCB Box 2-5 2-6 2-4 2-2 2-1 2-3 3 2 1 ■ Parts List No CODE NO Description Specification Q’TY Remark AD24A1(B1)E12 AD18A1(B1)E09 AD19A1(B1)E07 AD19A1(B1)E12 1 DB61-10151A CASE-CONTROL ABS(94-5V) 1 1 1 1 2 DB93-10585A ASS'Y MAIN PCB ASS’Y - 1 - - DB93-10630A “ “ - - 1 - DB93-10586A “ “ 1 - - - DB93-10630B “ “ - - - 1 1 1 1 1 2-2 DB32-10008D THERMISTOR ASS'Y 103AT 1 1 1 1 2-3 DE26-20154A TRANS-POWER AC230V DC17V 300m
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PCB Diagrams ■ PART LIST No DESIGN LOCATION CODE NO Description Specification Q’TY 1 F701 DE32-10037A FUSE FST 250V 3.15A 1 2 F701 DE47-40024A HOLDER-FUSE FH-51H 7.5A 1 3 IC01 DE13-20008A IC-VOLT REGU KA7812A 1 4 IC01 DE62-30032A HEAT-SINK AL H25 1 5 IC01 DE60-10100A SCREW-PH M3*6 FeFzY 1 6 IC02 DE13-10016A IC-VOLT REGU KA7805A 1 7 CR71 2306-000294 8 FT71 C-FILM CQS 450V 1.
7-2 ASS’Y DISPLAY & Module • DB93-10560B / DB93-10561B • PCB-DISPLAY : DB41-10204A ■ PART LIST No Description CODE-NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 PCB-DISPLAY LED-LAMP LED-LAMP LED-LAMP LED-LAMP MODULE REMOCON C-CERAMIC R-CARBON CONNECTOR WAFER C-CERAMIC DIODE SWITCHING C/W DIS & MODULE CASE-CENTER PCB UP CASE-CENTER PCB LOW SEAL DISPLAY UPP SEAL CASE DISPLAY DB41-10204B 0601-001333 0601-001059 0601-001060 0601-001196 DB32-50027A 2202-000780 2001-000515 7-3 2201-000283 0401-000005 DB39-2
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8-2 Outdoor Unit [UD24A1(B1)E2/UD18A1(B1)E2/UD19A1(B1)E2] 8-2 Samsung Electronics
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.
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9-2 Remote Control Samsung Electronics 9-2
