DB98_16045A(1)_co 12/9/03 1:33 PM Page 3 MULTI AIR CONDITIONER INDOOR UNIT OUTDOOR UNIT MH18AP1(P2)-09 MH19AP1(P2)-07 MH19AP1(P2)-12 MH24AP1(P2)-12 MH26AP1(P2)-07 MH26AP1(P2)-12 MH18AP1(P2)X SERVICE AIR CONDITIONER MH19AP1(P2)X MH24AP1(P2)X MH26AP1(P2)X Manual CONTENTS 11. Product Specifications 12. Operating Instructions & Technical Document 13. Disassembly and Reassembly 14. Refrigerating Cycle Diagram 15. Set Up the Model Option 16. Troubleshooting 17. Exploded Views and Parts List 18.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 1 1. Product Specifications 1-1 Table MH18AP1(P2) Model Item OUTDOOR UNIT MH18AP1(P2)-09 MH18AP1(P2)X MH19AP1(P2)-07 MH19AP1(P2)-12 MH19AP1(P2)X WALL-MOUNTING MULTI SPLIT 2.65 / 2.78 2.05 / 2.25 1 Unit(B/C) 2.65 / 2.78 3.51 / 3.60 5.30 / 5.56 5.56 / 5.85 2 Unit(B+C) - - 3 Unit(A+B+C) - Dehumidifying(A+B/C) Noise Cooling / Heating Power kW - \/h 1.1+1.1 - 1.0+1.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 2 Table(cont.) MH24AP1(P2) Model Item Type Cooling/Heating OUTDOOR UNIT INDOOR UNIT OUTDOOR UNIT MH24AP1(P2)-12 MH24AP1(P2)X MH26AP1(P2)-12 MH26AP1(P2)-07 MH26AP1(P2)X WALL-MOUNTING MULTI SPLIT WALL-MOUNTING MULTI SPLIT 3.51 / 3.51 3.51 / 3.65 3.8 / 3.8 2.05 / 2.06 7.02 / 7.6 5.56 / 5.71 1 Unit(A) 1 Unit(B/C) 2 Unit(A+B/C) Performance kW 2 Unit(B+C) - 4.1 / 4.12 3 Unit(A+B+C) - 7.61 / 7.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 3 MEMO Samsung Electronics 3
DB98_16045A(1)_1 12/9/03 1:35 PM Page 4 2. Operating Instructions & Technical Document 2-1 Operating Instructions 2-1-1 The Feature of Key in remote control No 1 NAMED OF KEY FUNCTION OF KEY (On/Off) On/Off button. Press the button to stop or run the air conditioner. (UP) Temperature adjustment button(UP). To increase the temperature by the pressing the temperature button. (DOWN) Temperature adjustment button(DOWN). To decrease the temperature by the pressing the temperature button.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 5 The Feature of Key in remote control(cont.) No NAMED OF KEY 8 FUNCTION OF KEY On Timer button. The On Timer enables you to switch on the air conditioner automatically after a given period of time that is from 30 minutes to 24 hours. To set the operating time, press the time display. 9 Off Timer button. The Off Timer enables you to switch off the air conditioner automatically after a given period of time that is from 30 minutes to 24 hours.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 6 Operating Instructions & Technical Document 2-1-2 Name & Function of Key in remote control 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 control 2.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 7 Operating Instructions & Technical Document 9. SWING : BLADE-H is rotated vertically by the stepping motor. *Swing Set : Press the button under the remote control is displayed on LCD the and the blades move up and down. If the one more time press the button, blades location is stop. 10. SETTING THE ON/OFF TIMER. : *ON TIMER : The On Timer enables you to switch on the air conditioner automatically after a given period of time.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 8 2-2 Technical Document (Pressure Graph) 2-2-1 MH18AP1(P2) ■ Cooling(7.5m–Piping) Cooing High Pressure Low Pressure Indoor (DB/WB) Outdoor (DB) A-unit B-unit A-unit B-unit 27/19 21/15 28.75 27.2 8.18 8.2 27/19 27/20 26.5 25.2 8.28 8.26 27/19 35/24 31.59 30.42 8.73 8.51 27/19 43/26 38.5 38.8 9.52 9.42 High Pressure (kgf/cm2G) 43 38.8 39 38.5 35 31.59 31 28.75 30.42 26.5 27 27.2 25.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 9 Operating Instructions & Technical Document 2-1-1 MH18AP1(P2) ■ Cooling(15m–Piping) Cooing High Pressure Low Pressure Indoor (DB/WB) Outdoor (DB) A-unit B-unit A-unit B-unit 27/19 21/15 27.75 25.0 7.98 8.0 27/19 27/20 26.8 24.4 8.02 8.00 27/19 35/24 32.27 31.27 8.39 8.15 27/19 43/26 38.2 37.9 8.82 8.79 43 38.2 High Pressure (kgf/cm2G) 39 37.9 35 32.27 31 27.75 26.8 25 24.4 31.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 10 Operating Instructions & Technical Document ■ Heating(7.5m–Piping) High Pressure Low Pressure Indoor (DB/WB) Outdoor (DB) A-unit B-unit A-unit B-unit 20/15 –10 23.85 20.19 3.72 3.68 20/15 7 28.59 25.69 6.79 6.84 Heating 29.5 High Pressure (kgf/cm2G) 25.5 28.59 (27.8) 27.5 25.69 23.85 (23.8) 23.5 21.5 19.5 20.19 17.5 15.5 A-unit B-unit 13.5 11.5 -15 -10 -5 0 5 10 Outdoor Temperature (ßC) 7.5 6.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 11 Operating Instructions & Technical Document ■ Heating(15m–Piping) High Pressure Low Pressure Indoor (DB/WB) Outdoor (DB) A-unit B-unit A-unit B-unit 20/15 –10 23.93 19.59 3.54 3.42 20/15 7 28.97 25.65 6.69 6.68 Heating 31.5 28.97 High Pressure (kgf/cm2G) 29.5 (27.4) 27.5 25.5 23.93 25.65 23.5 (23.8) 21.5 19.5 17.5 19.59 A-unit B-unit 15.5 13.5 11.5 -15 -10 -5 0 5 10 Outdoor Temperature (ßC) Low Pressure (kgf/cm2G) 7 6.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 12 Operating Instructions & Technical Document 2-2-2 MH19AP1(P2) ■ Cooling(7.5m–Piping) Cooing High Pressure Low Pressure Indoor (DB/WB) Outdoor (DB) A-unit B-unit A-unit B-unit 27/19 21/15 27.2 27.0 8.5 8.5 27/19 27/20 26.8 26.6 8.3 8.3 27/19 35/24 31.8 31.6 8.9 8.8 27/19 43/26 38.4 37.6 9.3 9.2 High Pressure (kgf/cm2G) 43 38.4 39 37.6 35 31.8 31 27.2 26.8 27 26.6 31.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 13 Operating Instructions & Technical Document 2-1-1 MH18AP1(P2) ■ Cooling(15m–Piping) Cooing High Pressure Low Pressure Indoor (DB/WB) Outdoor (DB) A-unit B-unit A-unit B-unit 27/19 21/15 27.4 27.2 8.4 8.2 27/19 27/20 27.0 26.8 8.2 8.1 27/19 35/24 32.0 31.8 8.7 8.4 27/19 43/26 38.6 37.8 9.2 8.8 High Pressure (kgf/cm2G) 43 38.6 39 37.8 35 32 31 27.4 27 27.2 26.8 31.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 14 Operating Instructions & Technical Document ■ Heating(7.5m–Piping) High Pressure Low Pressure Indoor (DB/WB) Outdoor (DB) A-unit B-unit A-unit B-unit 20/15 –10 22.7 27.5 3.5 3.4 20/15 7 27.7 33.1 6.8 6.7 Heating 35 High Pressure (kgf/cm2G) 33.1 32 29 27.5 27.7 26 A-unit B-unit 23 22.7 20 -15 -10 -5 0 5 10 Outdoor Temperature (ßC) Low Pressure (kgf/cm2G) 7 6.8 6.5 6.7 6 5.5 5 4.5 4 3.5 3 -15 A-unit B-unit 3.5 3.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 15 Operating Instructions & Technical Document ■ Heating(15m–Piping) High Pressure Low Pressure Indoor (DB/WB) Outdoor (DB) A-unit B-unit A-unit (7.5m) B-unit (32.5m) 20/15 –10 21.3 26.7 3.4 3.1 20/15 7 26.3 32.3 6.7 6.4 Heating 36.5 High Pressure (kgf/cm2G) 32.3 31.5 26.7 26.5 26.3 21.5 21.3 16.5 A-unit B-unit 11.5 -15 -10 -5 0 5 10 Outdoor Temperature (ßC) 7 6.7 6.4 Low Pressure (kgf/cm2G) 6.5 6 5.5 5 4.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 16 Operating Instructions & Technical Document 2-2-3 MH24AP1(P2) ■ Cooling(7.5m–Piping) Cooing High Pressure Low Pressure Indoor (DB/WB) Outdoor (DB) A-unit B-unit A-unit B-unit 27/19 21/15 28.75 26 8.9 9.0 27/19 27/20 27.9 25.4 8.8 8.9 27/19 35/24 31.1 30.05 9.0 9.1 27/19 43/26 38.0 38.0 9.17 9.2 High Pressure (kgf/cm2G) 43 38.0 39 38.0 35 31.1 31 28.75 27.9 30.05 27 26 23 25.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 17 Operating Instructions & Technical Document 2-1-1 MH18AP1(P2) ■ Cooling(15m–Piping) Cooing High Pressure Low Pressure Indoor (DB/WB) Outdoor (DB) A-unit B-unit A-unit B-unit 27/19 21/15 27.75 26.0 8.7 8.8 27/19 27/20 26.9 24.4 8.6 8.7 27/19 35/24 30.1 29.05 8.8 8.9 27/19 43/26 37.3 37.0 8.97 9.0 High Pressure (kgf/cm2G) 39 37.3 37 35 30.1 31 27.75 26.9 29.05 27 26 23 24.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 18 Operating Instructions & Technical Document ■ Heating(7.5m–Piping) High Pressure Low Pressure Indoor (DB/WB) Outdoor (DB) A-unit B-unit A-unit B-unit 20/15 –10 24.91 20.61 3.70 3.67 20/15 7 29.98 26.69 6.99 6.85 Heating 31.5 High Pressure (kgf/cm2G) 29.98 (28.4) 29.5 27.5 25.5 26.69 24.91 (24.8) 23.5 21.5 19.5 20.61 17.5 A-unit B-unit 15.5 13.5 11.5 -15 -10 -5 0 5 10 Outdoor Temperature (ßC) 7.5 6.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 19 Operating Instructions & Technical Document ■ Heating(15m–Piping) High Pressure Low Pressure Indoor (DB/WB) Outdoor (DB) A-unit B-unit A-unit B-unit 20/15 –10 23.91 19.61 3.50 3.47 20/15 7 28.98 25.69 6.79 6.65 Heating 31.5 28.98 High Pressure (kgf/cm2G) 29.5 (27.4) 27.5 25.5 25.69 23.91 23.5 21.5 (23.8) 19.61 19.5 17.5 A-unit B-unit 15.5 13.5 11.5 -15 -10 -5 0 5 10 Outdoor Temperature (ßC) 7 6.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 20 Operating Instructions & Technical Document 2-2-4 MH26AP1(P2) ■ Cooling(7.5m–Piping) Cooing High Pressure Low Pressure Indoor (DB/WB) Outdoor (DB) A-unit B-unit A-unit B-unit 27/19 21/10 27.30 25.46 6.77 6.89 27/19 27/19 27.05 25.06 6.64 6.82 27/19 35/24 32.21 31.27 8.62 8.84 27/19 45/26 39.50 38.00 9.31 9.61 43.00 High Pressure (kgf/cm2G) 39.50 39.00 38.00 35.00 32.21 31.00 27.30 27.05 23.00 25.46 25.06 31.27 27.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 21 Operating Instructions & Technical Document 2-1-1 MH18AP1(P2) ■ Cooling(15m–Piping) Cooing High Pressure Low Pressure Indoor (DB/WB) Outdoor (DB) A-unit B-unit A-unit B-unit 27/19 21/10 29.57 29.32 7.62 8.38 27/19 27/19 28.05 28.60 7.57 8.33 27/19 35/24 32.40 32.87 8.14 9.12 27/19 45/26 39.50 38 8.85 9.81 43.00 High Pressure (kgf/cm2G) 39.50 39.00 38.00 32.87 35.00 31.00 29.57 28.60 27.00 29.32 28.05 32.40 23.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 22 Operating Instructions & Technical Document ■ Heating(7.5m–Piping) Heating High Pressure Low Pressure Indoor (DB/WB) Outdoor (DB) A-unit B-unit A-unit B-unit 20/15 –10 19.99 19.28 3.27 3.03 20/15 2 24.75 24.69 5.22 4.94 20/15 7 28.04 27.16 6.38 6.04 High Pressure (kgf/cm2G) 29 28.04 27 27.16 (24.75) 25 (24.69) 23 A-unit B-unit 21 19.99 19.28 19 -12 -7 -2 3 8 Outdoor Temperature (ßC) 7 6.38 High Pressure (kgf/cm2G) 6.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 23 Operating Instructions & Technical Document ■ Heating(15m–Piping) Heating High Pressure Low Pressure Indoor (DB/WB) Outdoor (DB) A-unit B-unit A-unit B-unit 20/15 –10 19.99 19.28 3.27 3.03 20/15 2 24.75 24.69 5.22 4.94 20/15 7 28.04 27.16 6.38 6.04 High Pressure (kgf/cm2G) 29 28.04 27 27.16 (24.75) 25 (24.69) 23 21 19.99 19 A-unit B-unit 19.28 17 -12 -7 -2 3 8 Outdoor Temperature (ßC) 7 6.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 24 3. Disassembly and Reassembly Stop operation of the air conditioner and remove the power cord before repairing the unit. 3-1 Indoor Unit No Parts 1 Front Panel Procedure Remark 1) Stop the air conditioner operation and block the main power. 2) Detach tape of Front Panel upper. 3) Slide the lower Front Grille down, then disassemble it by pulling it forwards. 4) Open the upper Front Grille by pulling right and left sides of the Grille.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 25 Disassembly and Reassembly No Parts Procedure Remark 10) At first, press the left and center hook of the back side of the Panel Grille with the thumb to remove the hook. And press the right of the upper side of the Panel Grille with the fingers. And then disassemble the Panel Grille. 2 Electrical Parts (Main PCB) 3 Tray Drain Samsung Electronics 1) Take all the connector of PCB upper side out.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 26 Disassembly and Reassembly No Parts 4 Heat Exchanger Procedure 1) 2) 3) 4) Remark Loosen 2 fixing earth screws of right side. Detach the Connection Pipe. Detach the Holder Pipe at the rear side. Loosen 3 fixing screws of right and left side. 5) Detach the Heat Exchanger from the indoor unit. 5 Fan Motor & Cross Fan 1) Loosen 2 fixing screws and detach the Motor Holder. 2) Loosen 1 fixing screw of Fan Motor.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 27 3-2 Outdoor Unit No Parts 1 Cabinet Procedure 1) Turn off the unit and remove the power cable. 2) Detach the Top Cover. 3) Detach the Control Box Cover. 4) Unplug the Ass'y Cable. 5) Detach the Cabinet-Side. 6) Detach the Cabinet-Front. Remark * When you assemble the parts, check if the each parts and Component Electric Box are fixed firmly. 2 Fan Motor & Propeller Fan 1) Detach the Nut Flange.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 28 4. Refrigerating Cycle Diagram 4-1 MH18AP1(P2)X 3/8" A-Room 3/8" 3/8" ID1.3*650L 7.94mm sensor sensor Comp-A 1/4" 3/8" 3/8" 3/8" 3/8" B-Room 7.94mm ID1.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 29 4-2 MH19AP1(P2)X 3/8" A-Room 3/8" ID 1.3*800L 3/8" 7.94mm sensor sensor Comp-A 1/4" 3/8" 3/8" 3/8" 3/8" sensor 7.94mm 1/4" ID1.3*550L 1/4" 5/16" ¿4.76 B-Room Comp-B sensor ID 1.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 30 4-3 MH24AP1(P2)X 3/8" 3/8" 3/8" sensor ID 1.3*550 7.94mm A-Room sensor Comp-A 1/4" 3/8" 3/8" 3/8" 3/8" sensor 7.94mm sensor ID1.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 31 4-4 MH26AP1(P2)X B-Room (MH26AP2-07) sensor A-Room (MH26AP2-12) Air sensor C-Room (MH26AP2-07) sensor ID1.5*700 sensor ID1.3*500 sensor 1/4"(7.5m) ID1.3*650 Distributor 3/8"(7.5m) 1/4"(7.5m) Elec.expansion valve Comp-B/C ID1.3*650 3/8"(7.5m) 1/4"(7.5m) Comp-A Samsung Electronics Elec.expansion valve 3/8"(7.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 32 5. Set Up the Model Option 5-1 Setting Option Setup Method ex) Option No. : Step 1 : Enter the Option Setup mode. 1st Take out the batteries of remote control. 2nd Press the temperature insert the battery again. 3rd Make sure the remocon display shown as button simultaneously and . Step 2 : Enter the Option Setup mode and select your option according to the following procedure. 1 The default value is Otherwise, push the . button to .
DB98_16045A(1)_1 12/9/03 1:35 PM Page 33 Set Up the Model Option 7 Press button, then the default value is . 8 Push the button to set the display panel to . Every time you push the button, the display panel reads ... repeatedly. 9 8 9 Do not touch the 7 button because its default is Unless the display panel reads , push the . button to . 10 10 11 Push the 12 button to set the display panel to . Every time you push the button, the display panel reads ... repeatedly.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 34 Set up the Model Option ■ Table of the option code 34 MODEL OPTION CODE MH18AP1(P2)-09 024553-106340 MH19AP1(P2)-07 023553-10620c MH19AP1(P2)-12 067503-106362 MH24AP1(P2)-12 067533-106362 MH26AP1(P2)-07 025773-10620c MH26AP1(P2)-12 067553-106351 Samsung Electronics
DB98_16045A(1)_1 12/9/03 1:35 PM Page 35 6. Troubleshooting 6-1 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 4 cables. Check the terminals if the indoor unit and outdoor unit are properly linked by the same number of cables.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 36 6-2 Checking and Testing operations To complete the installation, perform the following checks and tests to ensure that the air conditioner is operating correctly. 1.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 37 Troubleshooting 3. Check the connection of PCB communication of outdoor unit. (Check whether the red LED of outdoor unit PCB is flickering.) • The communication lamp is flickering after the display of each unit on the outdoor PCB display part. (every one second). LED is not flickering, if the connection is bad or the room select switch is located in the wrong position. - LED lamp (red) flickering after display of A (0.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 38 Troubleshooting The error indicated on the PCB display of outdoor unit Display Remark Explanation Outdoor sensor error (Short/Open) Be sure to check after applying the power to the outdoor unit. Outdoor A cond pipe sensor error (Short/Open) Outdoor B cond pipe sensor error (Short/Open) Outdoor C cond pipe sensor error (Short/Open) A unit test operation error B unit test operation error Display when the test operation finishes.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 39 Troubleshooting The error indicated on the display panel of indoor unit Display Explanation Indoor unit room temperature sensor error Remark When inputting MICOM over 4.9V and below 0.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 40 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.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 41 6-3 Fault Diagnosis by Symptom 6-3-1 No Power (completely dead)-Initial diagnosis 1. Checklist : 1) Is input voltage normal? 2) Is AC power linked correctly? 3) 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.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 42 Troubleshooting 6-3-2 When the power voltage is not available 1. Checklist : 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? If it doesn't come out the sound "ting", do inspect and repair in accordance with the following inspection sequence. 2.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 43 Troubleshooting 6-3-3 No Power (Outdoor unit) 1. Checklist : 1) 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.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 44 Troubleshooting 6-3-4 When the fan of indoor unit does not operate 1. Checklist : 1) Is the power voltage normal? 2) Is the connector of indoor fan with the good contact? (CN72) 3) Is the soldering status of running condenser (CR71) with the good contact? 4) Is connector of the Hall IC with the good contact (CN44)? 5) Is the indoor fan rotating when it is under operation mode? 2. Troubleshooting procedure Put the power off and put it on after 5 seconds.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 45 Troubleshooting 6-3-5 When the outdoor unit fan does not operate 1. Checklist : 1) The outdoor unit fan motor operates only when the operating conditions are satisfied and is selected by the RY74(LOW) and RY75(HI) to rotate.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 46 Troubleshooting 6-3-6 When the UP/DOWN louver motor does not operate. (Initial Diagnosis) 1. Checklist : 1) Is input voltage normal? 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. Is the operation icon( ) lamp flickering with the sound of "ting"? No Check as in the procedure "No Power parts". Refer to page 41.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 47 Troubleshooting 6-3-7 If Operation by remote control unit is impossible. (Initial Diagnosis) 1. Troubleshooting procedure Remove power cord and plug in again in approx. 5 seconds. Is the operation icon( ) lamp flickering with the sound of "ting"? No Check as in the procedure "No Power parts". Refer to page 41. 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.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 48 Troubleshooting 6-3-8 When the 4-Way valve (A,B) is not operating 1. Checklist : 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 (CN75) and B (CN76) good? 2. Troubleshooting procedure Put off the outdoor unit power and put it on again after 5 seconds.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 49 Troubleshooting 6-3-9 When the compressor does not operate 1. Checklist : 1) Is the COMP A under the operating conditions? (cooling operating of A, B(C) room) 2) Is the power voltage normal? (the rating voltage ±10% range) 3) Are the connector connection of COMP A(RY72, 73) and B(RY71) 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.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 50 6-4 PCB Inspection 6-4-1 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_16045A(1)_1 12/9/03 1:35 PM Page 51 Troubleshooting 6-4-3 Detailed Inspection Procedure No Procedure Inspection Method 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 • Voltage over • Indoor unit fan motor short-circuit.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 52 7. Exploded Views and Parts List 7-1 Indoor Unit 12 7 7-1 14 15 7-3 15-1 15-6 8 15-4 7-2 15-2 15-3 3 10 15-5 9 3-1 6 11 1-2 1 13 1-1-2 1-1 1-1-3 1-1-1 1-1-4 1-3 1-1-5 2 1-1-6 1-4 4 5 You can search for the updated part code number through the ITSELF. URL : http://itself.sec.samsung.co.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 53 Exploded Views and Parts List ■ Parts List Q'TY No. Code No.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 54 7-2 Outdoor Unit ■ MH18AP1(P2)X / MH19AP1(P2)X 10 12 4 13 14 7-2 9 7-3 8(8-1~8-7) 3 1 11(11-1~11-5) 2 7-4 7-5 7(7-1) 5 6 54 Samsung Electronics
DB98_16045A(1)_1 12/9/03 1:35 PM Page 55 Exploded Views and Parts List ■ Parts List Q'TY No. Code No. Description Specification 1 DB90-00734A ASS'Y CABI FRONT 2 DB67-50063A FAN-PROPELLER 3 DB31-00001B MOTOR-FAN IC-9630SLJ5A 1 1 4 DB61-20008C BASE-MOTOR SGCC-M,T1.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 56 Exploded Views and Parts List ■ MH24AP1(P2)X 19 18 11 14 5(5-1) 4 13(13-1~13-2) 3 2 1(1-1) 12 (12-1~12-6) 10(10-1~10-3) 15(15-1~15-5) 9(9-1~9-3) 8-2 8-2 6(6-1~6-2) 8(8-3) 7 56 17(17-1, 17-2) 16(16-1, 16-2) Samsung Electronics
DB98_16045A(1)_1 12/9/03 1:35 PM Page 57 Exploded Views and Parts List ■ Parts List No.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 58 Exploded Views and Parts List ■ MH26AP1(P2)X 10 12 4 2 19 5(5-1) 11-2 3 15 11-3 11-5 11-4 11-1 13 11-6~11-7 8 8-3(8-3-1, 8-3-2, 8-3-3) 8-1-1 6 6-2 6-1 8-1-3 8-1-2 1-1 8-1-4 8-1-2 16-3 1 16-4 9 (9-1, 9-2) 8-1 (8-1-5 8-1-6 8-1-7 8-1-8) 17 16 8-1-4 18 16-2 16-1 7 58 8-2(8-2-1, 8-2-2) Samsung Electronics
DB98_16045A(1)_1 12/9/03 1:35 PM Page 59 Exploded Views and Parts List ■ Parts List No.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 60 7-3 Ass'y Control In (Indoor Unit) ■ MH18AP1(P2)-09, MH19AP1(P2)-07, MH26AP1(P2)-07 : DB93-02567A ■ MH19AP1(P2)-12, MH24AP1(P2)-12, MH26AP1(P2)-12 : DB93-02568A 60 Samsung Electronics
DB98_16045A(1)_1 12/9/03 1:35 PM Page 61 Exploded Views and Parts List ■ Parts List Q'TY MH18AP1(P2)-09 MH19AP1(P2)-07 MH26AP1(P2)-07 MH19AP1(P2)-12 MH24AP1(P2)-12 MH26AP1(P2)-12 ABS 1 - CASE-CONTROL AC ABS - 1 DB93-02416A ASS'Y MAIN PCB ASS'Y 1 1 3 DB93-01368C ASS'Y S/W & DISPLAY PCB ASS'Y 1 1 4 DB93-01369A ASS'Y-MODULE PCB ASS'Y 1 1 5 DB65-00046A ASS'Y TERMINAL BLOCK ASS'Y 1 1 6 DB70-00289A PLATE TERMINAL LOW SGCC-M,TI,2 1 1 7 DB61-00171A HOLDER WIRE CRAMP HIP
DB98_16045A(1)_1 12/9/03 1:35 PM Page 62 8.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 63 PCB Diagram ■ BOTTOM Samsung Electronics 63
DB98_16045A(1)_1 12/9/03 1:35 PM Page 64 PCB Diagram ■ Parts List Location No. Description Specification Q'TY PCB PCB-BOARD FR-4,1.6t 1 D101 DIODE-RECTIFIER UG2D,200V,2A,DO-204AC,TP 1 D701, D702, D703 DIODE-RECTIFIER MRA4005,600V,1A,SMA,TP 3 BD71 DIODE-BRIDGE DF06S,600V,1A,SMD-4,TP 1 ZD11 DIODE-ZENER BZX84C3V6,3.6,350mW,SOT-23,TP 1 ZD71 DIODE-ZENER 1N4749A,24V,5%,1W,DO-41,TP 1 ZD12 DIODE-ZENER BZX84-C11,10.4-11.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 65 PCB Diagram ■ Parts List (cont.) Location No. Description Specification Q'TY R503 R-CHIP 6.8Kohm,5%,1/8W,TP,2012 1 C108 C-CERAMIC,DISC 2.2NF,20%,400V,Y5U,BK,12.5x6mm,10 1 C-CER,CHIP;100nF,+80-20%,50V,Y5V,TP,2012 21 C-CER,CHIP 1nF,10%,50V,X7R,TP,2012,- 2 C202,C203,C501 C-CER,CHIP 10nF,+80-20%,50V,Y5V,TP,2012 3 C704 C-FILM,LEAD-PEF 10nF,10%,630V,TP,16x11x7.5mm,5 1 C702,C703 C-FILM,LEAD-PEF 4.7nF,10%,100V,TP,10x8.5x5.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 66 8-2 MAIN PCB(Outdoor Unit) ■ 18K/19K/24K 66 Samsung Electronics
DB98_16045A(1)_1 12/9/03 1:35 PM Page 67 PCB Diagram ■ 26K Samsung Electronics 67
DB98_16045A(1)_1 12/9/03 1:35 PM Page 68 PCB Diagram ■ Parts List Location No. Description Specification Q'TY F701 FUSE FST 250V 3.15A 1 F101 FUSE FST250V 2A 1 F701,F101 HOLDER-FUSE FH-51H 7.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 69 PCB Diagram ■ Parts List (cont.) Location No. Description Specification Q'TY VA71,VA72 VARISTOR INR14D 471K 2 DS71 DISCHARGER MP362MA 1 J01~J22 WIRE SO COPPER P10.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 70 8-3 ASS'Y DISPLAY PCB ■ 18K/19K/24K/26K : DB93-01368G ■ Parts List No 70 Description Specification Q'TY Remark 1 SNA 1 ASS'Y LED MODULE 2 PCB-DISPLAY FR-1 T1.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 71 8-4 ASS'Y MODULE PCB : DB93-01369A ■ Parts List No Description Specification Q'TY Remark 1 PCB MODULE FR1 T1.6 1 SNA 2 CONNECTOR-HEADER BOX, 3P, 1R, 2mm, ANGLE, SN 1 SNA 3 C-CERAMIC, MLC-AXIAL 1nF, 10%, 50V, Y5P, TP, 1.9 x 3.5, - 1 SNA 4 DIODE-SWITCHING 1N4148, 100V, 200mA, DO-35, TP 1 SNA 5 C-CERAMIC, MLC-AXIAL 100nF, +80-20%, 50V, Y5V, TP, 3.
DB98_16045A(1)_1 12/9/03 1:35 PM Page 72 MEMO 72 Samsung Electronics
DB98_16045A(1)_1 12/9/03 1:35 PM Page 73 9. Wiring Diagram 9-1 Indoor Unit Code No : DB98-15806A This Document can not be used without Samsung's authorization.
DB98_16045A(1)_1 12/9/03 1:36 PM Page 74 9-2 Outdoor Unit ■ MH18AP1(P2)X/MH19AP1(P2)X/MH24AP1(P2)X Code No : DB68-20814A This Document can not be used without Samsung's authorization.
DB98_16045A(1)_1 12/9/03 1:36 PM Page 75 Wiring Diagram ■ MH26AP1(P2)X Code No : DB68-01437A This Document can not be used without Samsung's authorization.
DB98_16045A(1)_1 12/9/03 1:36 PM Page 76 MEMO 76 Samsung Electronics
DB98_16045A(1)_1 12/9/03 1:36 PM Page 77 10. Schematic Diagram 10-1 Indoor Unit This Document can not be used without Samsung's authorization.
DB98_16045A(1)_1 12/9/03 1:36 PM Page 78 10-2 Outdoor Unit ■ MH18AP1(P2)X/MH19AP1(P2)X/MH24AP1(P2)X This Document can not be used without Samsung's authorization.
DB98_16045A(1)_1 12/9/03 1:36 PM Page 79 Schematic Diagram ■ MH26AP1(P2)X This Document can not be used without Samsung's authorization.
DB98_16045A(1)_1 12/9/03 1:36 PM Page 80 MEMO 80 Samsung Electronics
DB98_16045A(1)_co 12/9/03 1:33 PM Page 2 ELECTRONICS This Service Manual is a property of Samsung Electronics Co., Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law. © Samsung Electronics Co., Ltd. Dec. 2003. Printed in Korea. Code No.
