DB98-05230A(1)-cover 4/18/02 5:03 PM Page 3 ROOM AIR CONDITIONER INDOOR OUTDOOR AQA24C5(6)ME SH24AC5(6) AQA18C9(0)ME SH18AC9(0) UQA24C5(6)ME SH24AC5(6)X UQA18C9(0)ME SH18AC9(0)X SERVICE Manual AIR CONDITIONER CONTENTS 1. Precautions 2. Product Specifications 3. Operating lnstructions and Installation 4. Disassembly and Reassembly 5. Troubleshooting 6. Exploded Views and Parts List 7. Block Diagrams 8. PCB Diagrams 9. Wiring Diagrams 10.
DB98-05230A(1)-1 4/18/02 5:04 PM Page 1-1 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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DB98-05230A(1)-1 4/18/02 5:04 PM Page 2-1 2. Product Specifications 2-1 Table Model Item SH24AC5(6) Cool Heat Cool Heat 6.90KW 5.30KW 15.0 12.7 220-240V, 50Hz Power Sourse Capacity Performance SH18AC9(0) KW Air circulation (High) m /min Moisture removal (High) Liters/h 3 220-240V, 50Hz 6.80KW 14.0 5.60KW 14.0 3.2 2.2 198 ~ 264 198 ~ 264 Available voltage range V Running amperes A 11.4 11.9 7.9 7.8 kw 2.50 2.60 1.83 1.80 % 94.6 94.2 98.4 98.4 BTU/wh 2.72 2.
DB98-05230A(1)-1 4/18/02 5:04 PM Page 2-2 2-2 Major Component specifications ■ Indoor unit Model Part No. PCB Controls Control circuit fuse Type Dia. and length Fan motor model Pols,rpm(at 240V) Fan Normal out & Fan Motor Coil resistance(Ambient temp.20˚C) S-Motor Heat Exch. ■ mm W Ω Safety devices Type Operating temp. Open ˚C Run capacitor µF x VAC Type Model Rating Coil resistance (Ambient temp.
DB98-05230A(1)-1 4/18/02 5:04 PM Page 2-3 2-3 Dimensions 2-3-1 Indoor Unit (Front view) 115 275 (Remote control) 1080 204 45 22 (Rear view) Installation plate ✳The feature is subject to be varied as a model.
DB98-05230A(1)-1 4/18/02 5:04 PM Page 2-4 Product Specifications 2-3-2 Outdoor Unit 24K BTU 310 ■ (Rear view) 638 (Front view) 660 880 18K BTU 320 ■ (Rear view) 620 (Front view) 582 340 787 2-4 Samsung Electronics
DB98-05230A(1)-1 4/18/02 5:04 PM Page 2-5 2-4 Pressure Graph ■ 24K BTU 10 Low Pressure [kg/cm G] 30.6/22.5 2 9 27/19 8 21.5/14.6 7 6 20 25 30 40 35 Outdoor drybulb temp [deg C] ■ 18 BTU 10 2 Low Pressure [kg/cm G] 30.6/22.5 9 27/19 8 21.5/14.
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DB98-05230A(1)-1 4/18/02 5:04 PM Page 3-1 3. Operating Instructions and Installation 3-1 Operating Instructions 3-1-1 The Feature of Key in remote controller NO FUNCTION OF KEY NAMED OF KEY Power On/Off button to start and stop airconditioner or timer set up. 1 (UP) Temp. up button. To increase the temperatute by the pressing the temperature button. (DOWN) Temp. down button. To decrease the temperature by the pressing the temperature button.
DB98-05230A(1)-1 4/18/02 5:04 PM Page 3-2 Operating Instructions and Installation 3-1-2 Name & Function of Key in remote controller 1. AUTO MODE : In this mode, operation mode(COOL, HEAT) is selected automatically by the room temperature of initial operation. Room Temp Operation Type Tr≥ 21°C+∆T Cool Operation (Set Temp:24°C+∆T) 21°C +∆T>Tr Heat Operation (Set Temp : 22°C+∆T) ∆T= -1°C, -2°C, 0°C+1°C+2°C ∆T is controlled by setting temperature up/down key of remote controller 2.
DB98-05230A(1)-1 4/18/02 5:04 PM Page 3-3 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. And each time you press the button the 5WAY func-tion is changed as follow.
DB98-05230A(1)-1 4/18/02 5:04 PM Page 3-4 3-2 Installation 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. Make sure that you install the indoor unit in an area allowing good air handling and endurance of vibration of the indoor unit.
DB98-05230A(1)-1 4/18/02 5:04 PM Page 3-5 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 .
DB98-05230A(1)-1 4/18/02 5:04 PM Page 3-6 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… 3. Window frame 4 to 6. 3.
DB98-05230A(1)-1 4/18/02 5:04 PM Page 3-7 Operating Instructions and Installation 3-2-2(c) Connecting the Assembly Cable. The indoor unit is powered from the outdoor 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 15 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.
DB98-05230A(1)-1 4/18/02 5:04 PM Page 3-8 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.
DB98-05230A(1)-1 4/18/02 5:04 PM Page 3-9 Operating Instructions and Installation 3-2-2(f) Air-Purge Procedure 1. Connect each assembly pipe to the appropriate valve on the outdoor unit and tighten the flare nut. Indoor unit Outdoor unit A Gas pipe side C B Liquid pipe side D 2. Connect the charging hose of low pressure side of manifold gauge to the packed valve having a service port (1/2” or 5/8” Packed valve) as shown at the figure. 3.
DB98-05230A(1)-1 4/18/02 5:04 PM Page 3-10 Operating Instructions and Installation 3-2-2(g) Refrigerant Refill • Refill an air-conditioner with refrigerant when refrigerant has been leaked at installing or using. 1. Vacuum system with pump (for new installation, leakage). 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 High pressure gauge Compound gauge 3.
DB98-05230A(1)-1 4/18/02 5:04 PM Page 3-11 Operating Instructions and Installation 3-2-2(h) Refrigerant Adjustment Class For service For installation Connection Pipe Length 5m Max. 5~10m Air-Purge Method Refrigerant Adjustment Air-Purge Method Refer to the detailed Air-Purge Procedure Unnecessary Purge air using a vaccum pump Add “A” of refrigerant R410A(Add as liquid state) for every 1m.
DB98-05230A(1)-1 4/18/02 5:04 PM Page 3-12 Operating Instructions and Installation 3-2-2(j) "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. 3. Set the unit to cool operation mode.
DB98-05230A(1)-1 4/18/02 5:04 PM Page 4-1 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.
DB98-05230A(1)-1 4/18/02 5:04 PM Page 4-2 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. (Right of indoor unit) 3) Pull tray drain out from the back body. 1) Do “1”, “2”, above. 2) Take all the connector of PCB upper side out. (Inclusion Earth Wire) 3) Separate the outdoor unit connection wire from the terminal block.
DB98-05230A(1)-1 4/18/02 5:04 PM Page 4-3 Disassembly and Reassembly No Parts 5 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.
DB98-05230A(1)-1 4/18/02 5:05 PM Page 4-4 4-2 Outdoor Unit No Parts 1 Cabinet Procedure Remark 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. 2 4-4 Fan Motor & Propeller Fan 1) Do Procedure 1 above. 2) Remove the nut flange.
DB98-05230A(1)-1 4/18/02 5:05 PM Page 5-1 5. Troubleshooting 5-1 Items to be checked first 1) The input voltage should be 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 7 cables. Check the terminals if the indoor unit and outdoor unit are properly linked by the same number of cables.
DB98-05230A(1)-1 4/18/02 5:05 PM Page 5-2 5-2 Fault Diagnosis by Symptom 5-2-1 No Power (completely dead)-Initial diagnosis 1) 2) Checklist : (1) Is input voltage normal? (the rating voltage ±10% range) (2) Is AC power linked correctly? (3) Is input voltage of DC regulator IC KA7805 (IC02) normal? (11.5VDC-12.5VDC) (4) Is output voltage of DC regulator IC KA7805 (IC02) normal? (4.5VDC-5.5VDC) Troubleshooting procedure Remove power cord and plug in again in approx.
DB98-05230A(1)-1 4/18/02 5:05 PM Page 5-3 Troubleshooting 5-2-2 When the Indoor Unit Fan Does Not Operate.
DB98-05230A(1)-1 4/18/02 5:05 PM Page 5-4 Troubleshooting 5-2-3 When the Outdoor Unit Does Not Operate.
DB98-05230A(1)-1 4/18/02 5:05 PM Page 5-5 Troubleshooting 5-2-4 When the UP/DOWN Louver Moter Does Not Operate. (Initial Diagnosis) 1) 2) Checklist : (1) Is input voltage normal? (the rating voltage ±10% range) (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. NO Is operating lamp blinking? Check as in the procedure "No Power parts". Refer to page 5-2.
DB98-05230A(1)-1 4/18/02 5:05 PM Page 5-6 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 NO Is operation lamp blinking? Check as in the procedure “NO Power parts”. Refer to page 5-2. YES “ “ sound heard from the indoor unit when ON/OFF button on the remote control unit pushed? YES Normal NO YES Voltage of battery less than 2.5V (Remote Control Unit)? Replace battery.
DB98-05230A(1)-1 4/18/02 5:05 PM Page 5-7 5-3 Replace PCB module 5-3-1 Replace PCB module Remove power cord Replace the PCB module Check the connection and plug in NO Does all display lamp blink or STD lamp blink? Replace another PCB module YES Refer to set up the Model option(5-3-2) Samsung Electronics 5-7
DB98-05230A(1)-1 4/18/02 5:05 PM Page 5-8 Troubleshooting 5-3-2 Set up the Model option The Method for Setting up the model option with remocon • It is necessary to set up option code after replacing the main-PBA as a service parts. Make sure that you can set up the option of code the remote controller after you replace the main PBA otherwise, the unit won’t be working properly and all LED lamps on display will be flickering.
DB98-05230A(1)-1 4/18/02 5:05 PM Page 5-9 Troubleshooting ! If the first number is appear. , it is correct otherwise press until @ When pressing the select one of them. button ~ appear on the display, # When pressing the select one of them. button ~ appear on the display, $ When pressing the select one of them. button ~ appear on the display, % When pressing the select one of them. button ~ appear on the display, ^ When pressing the select one of them.
DB98-05230A(1)-1 4/18/02 5:05 PM Page 5-10 Troubleshooting ■ OPTION ITEMS REMOCON SEG1 SEG2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 0 9 5 9 1 4 1 A 0 3 5 1 0 8 5 9 1 4 1 A 0 3 5 1 0 9 5 9 1 4 1 A 0 2 1 d 0 8 5 9 1 4 1 A 0 2 1 d MODEL AQA24C5ME SH24AC5 AQA24C6ME SH24AC6 AQA18C9ME SH18AC9 AQA18C0ME SH18AC0 5-10 Samsung Electronics
DB98-05230A(1)-1 4/18/02 5:05 PM Page 5-11 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 metallic portion to the earth. Especially when handling any micro computer or IC, carefully remove such static electricity before touching them. 2.
DB98-05230A(1)-1 4/18/02 5:05 PM Page 5-12 Troubleshooting 5-4-3 Detailed Procedure No. Malfunction 1 Pull out the power plug from the Checking point (symptoms) 1. Is the broken? AC terminal and confirm the fuse Causes • Voltage over • Indoor unit fan motor short-circuit on the PCB assembly Voltage check SMPS circuit is faulty 1. AC voltage at both C702? • SMPS circuit is faulty : rating voltage ±10% range 2. DC voltage at both C101? : about DC 325[v] ±10% 2 Turn the power on. 3.
DB98-05230A(1)-2 4/18/02 5:05 PM Page 6-1 6. Exploded Views and Parts List 6-1 Indoor Unit 17 17R or 16R 15R 14 11 12 10 8 7 9-1 13 9 6R 5 6-1 6-1 6-3 6-2 3 3-2 3-3 4 3-1 1 2 You can search for the updated part code number through the ITSELF. 1-1 Samsung Electronics URL : http://itself.sec.samsung.co.
DB98-05230A(1)-2 4/18/02 5:05 PM Page 6-2 Exploded Views and Parts List ■ Parts List Q’TY No.
DB98-05230A(1)-2 4/18/02 5:05 PM Page 6-3 6-2 Outdoor Unit 6-2-1 18K BTU 10 8 16 7 9 6 11 12-4 12-5 14 12-3 12 12-2 15 12-1 4 15-2 1 5 15-1 3 15-3 15-6 15-5 15-4 13 13-1 2 17-1 17-3 17-4 17-2 17-5 Samsung Electronics 17-7 17-6 6-3
DB98-05230A(1)-2 4/18/02 5:05 PM Page 6-4 Exploded Views and Parts List ■ Parts List Q’TY No.
DB98-05230A(1)-2 4/19/02 12:01 PM Page 6-5 Exploded Views and Parts List 6-2-2 24K BTU 17 6 10 8 16 9 5 11 7 13 14 12-3 12 4 15-6 15-1 12-4 13-1 15-5 1 15-4 3 15-2 12-2 15-3 15-2 12-1 2 17-1 17-3 17-2 17-6 17-4 Samsung Electronics 17-5 6-5
DB98-05230A(1)-2 4/18/02 5:05 PM Page 6-6 Exploded Views and Parts List ■ Parts List Q’TY No.
DB98-05230A(1)-2 4/18/02 5:05 PM Page 6-7 6-3 Remote Control & PCB Box 6-3-1 Remote Control (DB93-00251L) 1 ■ Parts List No 1 Description Specification Q’TY ASS’Y PCB REMOCON ARH-403 1 BATTERY COVER Samsung Electronics Remark 1 6-7
DB98-05230A(1)-2 4/18/02 5:05 PM Page 6-8 Exploded Views and Parts List 6-3-2 PCB Box 2 4 3 1 ■ Parts List No CODE NO 1 PD-SH30ZC-00 2 Description Specification Q’TY ASS'Y MAIN PCB PD-SH30ZC-00 1 DB32-00027B ASS'Y THERMISTOR 103AT 240/240 1 3 DB93-00926A ASS’Y PCB S/W & MODULE ASS’Y 1 4 DB39-00172A CONNECTOR WIRE DISPLAY AWG#26 1 6-8 Remark Samsung Electronics
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DB98-05230A(1)-2 4/18/02 5:06 PM Page 7-3 PCB Diagrams ■ Parts List No Design-Location Description Specification Q’TY 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 C103 C702 CR71 C701 RY71,72,73,74 SS71 IC04 IC02 TN11 FT71 BZ61 F701 F701 D101,102,103,104 D105 ZD12 ZD13 ZD11 Q603 Q401,601,602 Q901,902 Q201 PC11 PC12 IC01 VA71,72 R405,406 R104,105 R101 R206,501,502,601,604,606,902 R201,207,208,401,403,408,603,605,608 R910,911,912
DB98-05230A(1)-2 4/18/02 5:06 PM Page 7-4 PCB Diagrams ■ ASS’Y MODULE PCB : DB93-00926A ■ Parts List NO Description Specification Q’TY 1 PCB-DISPLAY FR-1 T1.
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DB98-05230A(1)-2 4/18/02 5:06 PM Page 9-2 9-2 Outdoor Unit ■ SH24AC5(6)X, SH18AC9(0)X 9-2 MARK NAME MARK NAME PR POWER-RELAY T1 1, 2 TERMINAL BLOCK 20S SOLENOID COIL CH C1 CAPACITOR FM1 FAN MOTOR F FUSE(2A, 250V~) S SPARK KILLER Samsung Electronics
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DB98-05230A(1)-2 4/18/02 5:06 PM Page 9-7 UPDATE LOG SHEET Application date Page Part# Note(Cause & Solution) 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 website. Itself Solution Integrated technology supporting electronic library http://itself.sec.samsung.co.kr Copyright © 2002 By Samsung Electronics Co., Ltd.
DB98-05230A(1)-cover 4/18/02 5:03 PM Page 2 ELECTRONICS © Samsung Electronics Co., Ltd. Apr. 2002. Printed in Korea. Code No.
