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SERVICE

Manual

AS180UE
AS181UE
AS18A1UD
AS18A1UE
AS-2408BR

CONTENTS

AIR CONDITIONER

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. Disassembly and Reassembly

5. Tro u b l e s h o o t i n g

6. Exploded Views and Parts List

7. Block Diagrams

8. PCB Diagrams

9. Wiring Diagrams

10. Schematic Diagrams

ROOM AIR CONDITIONER

Summary of Contents for AS-2408BR

Page 1: ... AIR CONDITIONER 1 Precautions 2 Product Specifications 3 Operating Instructions and Installation 4 Disassembly and Reassembly 5 Troubleshooting 6 Exploded Views and Parts List 7 Block Diagrams 8 PCB Diagrams 9 Wiring Diagrams 10 Schematic Diagrams ROOM AIR CONDITIONER ...

Page 2: ... Samsung Electronics Co Ltd FEB 1999 Printed in Korea Code No DB81 10161A 3 ...

Page 3: ...roblems such as intermittent contact etc 5 Lead wire or power cable damaged Check if lead wire or power cord is damaged prior to repair and replace if damaged 6 Avoid tapping a power cord Tapping a power cable or using an extension cord from a power outlet is dangerous and should be avoided It may result is malfunctioning or fire 7 Checking insulation Be sure to check insulation resistance when as...

Page 4: ...1 2 Samsung Electronics MEMO ...

Page 5: ... 15 1050x298x180 787x620x320 41 34x11 73x7 09 30 98x24 4x12 6 13 46 ø6 35 x5 ø12 7 x5 ø17x 2 Rotary 1855 Cross fan Propeller Resin Steel 30 60 2Row12Step 2Row24Step CAPILLARYTUBE 600 1 580 Perfor mance Power Electri cal Chara cteris tics Product INDOORUNIT DB27 C WB19 C OUTDOORUNIT DB35 C WB24 C INDOORUNIT DB32 C WB23 C OUTDOORUNIT DB43 C WB26 C INDOORUNIT DB27 C WB19 5 C OUTDOORUNIT DB35 C WB24 C...

Page 6: ... 2 Dimensions 2 2 1 Indoor Unit 2 2 1 Outdoor Unit Air in Front view Remote control unit Rear view Front view Rear view Air out 1050 787 582 340 180 63 21 Installation plate 250 145 260 200 100 outer edge of indoor unit unit mm ...

Page 7: ... AUTO L ME HI NATURAL Adjusts air flow vertically Each time you press this button BLADE H rotates by 8 Changable range 50 Each time you press this button BLADE H rotates within 35 and stop Without regard to ON OFF condition in remote controller use this button to set current time Adjust the current time using TIME button Data can be transmitted after setting up the time Use this button to reserve ...

Page 8: ...oner is operated powerful state for 30 minutes regardless of the set tempera ture room temperature When this button is pressed again or when the operating time is 30 minutes turbo operation mode is canceled and returned to the previous mode 5 MILD MODE This mode is available only in AUTO COOL mode When this button is pressed at first the air conditioner is operated in its current state for 3 hours...

Page 9: ...Q timer button is pressed at operat ing state LCD displays the polling state sequentially The LCD also displays the time remaining 11 TIMER The air conditioner is turned ON OFF at a specified time using TIMER ON OFF Timer LED lights on 12 SELF TEST Interruption of electric power and Power on Abnormal condition of the room sensor Indoor unit fan motor lock Abnormal condition of the indoor unit s he...

Page 10: ... in a high place 3 Make sure that you install the outdoor unit in area providing good ventilation and which is not dusty It must not be blocked by any obstacle affecting the airflow near the air inlet and the air outlet 4 Make sure that you install the outdoor unit in area free from animals or plants 5 Make sure that you install the outdoor unit in area not blocking the traffic 6 Make sure that yo...

Page 11: ...ase locally Insulation tube Hole dimension of bolts for the outdoor unit Fix firmly if installed in an area affected by typhoons Tighten the flare nut by hand first and tighten firmly with a spanner 582 ø12 Remote control Remote control holder 10 4 5 6 Connection pipe lengh 5mmax 5 10m Air purge method Refertothe detailed air purge procedure Coolant adjustment unnecessary Add10g of coolant R 22 fo...

Page 12: ... concrete wall with anchor bolts utilize the anchor bolt holes as illustrated in the left figure 3 When the anchor bolts are already driven in the wall also utilize the anchor bolts holes to secure the installation plate If an anchor bolt is too long adjust the projecting length to 20mm or less 1 As the left Fig Fix the wood pillar at the wood frame and install installation plate with screw tap 2 ...

Page 13: ...d and bend the pipes there 1 Cut out the knock out piece from the leftside of the rear body with a knife etc Smooth the cut edges 1 Cut out the knock out piece from the underside of the rear body with a knife etc Smooth the cut edges 2 Cut out the Holder pipe on its slit part Set the drain hose in the inner part of the indoor unit and the assembly cable in lower part of it Wind tape round them Pip...

Page 14: ...t Outdoor unit 3 2 2 e Wiring connection outdoor unit 3 2 2 d Indoor unit installation 1 Pass the pipes through the hole in the wall and hook the indoor unit to the installation plate at the upper and lower hooks 2 Move the indoor unit to the right and left to make sure that the unit is securely hooked on to the installation plate DRAINAGE 1 Run the drain hose sloped downward 2 Do not install the ...

Page 15: ...rt connect an The grounding wire should be a green wire in order extention lead to it Solder the joint and insulated wire of ø1 6mm or 2mm2 or larger wrap it with tape The soldered joint should not be buried b Fasten the grounding wire with staples underground 4 Check the a After grounding work measure the grounding workmanship resistance with a grounding resistance tester and provide corrective b...

Page 16: ...ar Cone Roller Yoke 1 Cut the pipe using a pipe cutter 3 Insert a flare nut into the pipe and modifty flare Unproper flaring 2 Remove burrs at the tip of the pipe cut Caution Burrs not removed may result in leakage of gas Outer diameter A mm ø6 35mm 1 3 ø12 7mm 2 0 ø15 8mm 2 2 Oblique Raughness Burr Point down D A Inclined Surface damaged Cracked Uneven thickness Pipe Reamer ...

Page 17: ...or about 10 minutes Close the valve of the low pressure side of manifold gauge clockwise Remove the hose of the low pressure side of manifold gauge 7 Check for gas leakage At this time especially check for gas leakage from the 3 way valve s stem nuts and from the service port cap 5 Set valve cork of both liquid side and gas side of packed valve to the open position 2 Connect the charging hose of l...

Page 18: ...dicated by the pressure gauge low pressure side Standard pressure is should be 4 0 5 0kg cm2 in a reqular high operation mode 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 6 Open the coolant tank and fill with coolant until the rated pressure is reached It is recommended not to pour the coolant in too quic...

Page 19: ...ted 1 Carry out the pump down procedure Refer to the details of pump down 2 Remove the power cord 3 Disconnect the assembly cable from the indoor and outdoor units 4 Remove the flare nut connecting the indoor unit and the pipe At this time cover the pipe of the indoor unit and the other pipe using a cap or vinyl plug to avoid foreign materal entering 5 Disconnect the pipe connected to the outdoor ...

Page 20: ...3 14 Samsung Electronics MEMO ...

Page 21: ... 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 5 Loosen one of the right fixing screw and seperate the terminal cover 6 Open the cover screw and loosen three fix ing screws of front grille 7 Pull the upper left and right of discharge softly for the outside cover to be pulled out 8 Pull softly the l...

Page 22: ...eft and right screw of the Holder Filter and Separate the Holder Filter 1 Do above Separate the holder at the rear side of Indoor unit 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 above 2 Take all the connector of PCB 2 piece upper side out ...

Page 23: ...t screws of the heat exchanger 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 Lifting the heat exchanger up a little to push the up side for separation from the indoor unit ...

Page 24: ... 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 1 Do Procedure 1 above 2 Remove the nut flange Turn to the right to remove as it is a left turned screw 3 Disassemble the propeller fan ...

Page 25: ...stops intermittently in a COOL mode or DRY mode and fan speed of the indoor unit decreases It indicates power is on The LED stops blinking if the operation ON OFF button on the remote control unit is pushed In happens after a delay of 3 minutes when the compressor is reoperated The same phenomenon occurs when a power is on As a phenomenon that the compressor is reoperated after a delay of 3 minute...

Page 26: ... Remove power cord and plug in again in approx 5 seconds Is operating lamp lights on for three minutes and then goes off Check whether the fuse is normal F701 Check whether the output voltage of the trans is normal AC 15V 3V Check whether the DC 12V is normal DC12 0 5V between G and O of the IC01 Check whether the DC 5V is normal DC 5V 0 5V between G and O of the IC02 Check whether the display PCB...

Page 27: ...ox 5 seconds Is operating lamp lights on for three minutes and then goes off Check whether the indoor fan turns with the operation lamp being turned on when the start stop button of the remote control is pressed Is a voltage of above AC 240 300V applied to both ends of theindoor fan connector CN73 Is pin 3 of the CN43 a square wave Replace the indoor fan motor or fan motor capacitor Replace the Q4...

Page 28: ...er cord and plug in again in approx 5 seconds Is operating lamp lights on for three minutes and then goes off Check whether the compressor is activated in three minutes after the operation lamp comes on when you press the ON OFF button of the remote control Is the wave of the micom IC04 pin 62 high Is the wave of the IC06 pin 14 low Is the AC240V voltage between the skyblue wire and Brown wire of ...

Page 29: ...ure Y Y N N Y N N Y Remove power cord and plug in again in approx 5 seconds Is operating lamp blinking in 3 minutes and then lamp off Does operation start when swing button of the remote control unit pushed Voltage at pin 33 36 of micom IC04 change Squarewave Volatge at pin 10 13 of IC05 KID65003AP change Squarewave UP DOWN louver motor is faulty Check as in the procedure No Power parts Refer to p...

Page 30: ...No Power parts Refer to page 5 2 Normal Replace battery LCD is faulty Replace button Q601 KSH29 C4375 or Q602 2SC1623 is faulty LE61 LE62 CL 1L5E is faulty Receiver module GP1U271R is faulty Beep sound heard from the indoor unit when ON OFF button on the remote control unit pushed Voltage of battery less than 2 5V Remote Control Unit LCD display status of REMOCON normal Voltage at collecter of Q60...

Page 31: ... diode on its substrate So if a circuit board is roughly handled such lead wires and parts will be easily broken or damaged by bending or shock 5 When soldering the lead wires of any new part be sure to polish them using an emery paper or the like before solding them Since the lead wires of any new part are covered with an oxide film solder cannot adhere to the lead wires if not polished 6 When so...

Page 32: ... end of transformer Primary 198 264V 2 AC voltage at both end of transformer secondary 15 25V 3 DC voltage at OUT and GND of IC01 KA7812 12VDC 4 DC voltage at OUT and GND of IC02 5VDC 5 DC voltage at Q201 Base and GND change squarewave 1 Compressor does not operate 1 Voltage at 3 5 both ends of CN73 above 190V 2 Indoor unit fan motor does not operate Causes 1 Voltage over 2 Indoor unit fan motor s...

Page 33: ... Normal At ambient temperature 10 C 30 C Abnormal Measure the voltage between ground and signal wire of the fan motor Normal Abnormal Abnormal if voltage does not change from 0V to 5V Normal At ambient temperature 10 C 30 C Abnormal O Ω open or short Measure resistance between red wire and each terminal Normal Approx 380Ω at ambient temperature 20 C 30 C Abnormal O Ω open or short Between Resistan...

Page 34: ...Samsung Electronics 6 1 6 Exploded Views and Parts List 6 1 Indoor Unit ...

Page 35: ...SCREW M COVER SCREW LF COVER TERMINAL GUARD FILTER AIR ASS Y TRAY DRAIN MOTOR STEPPING BLADE H UPP BLADE H LOW ASS Y PCB SUB HOLDER E FILTER ASS Y MAIN PCB ASS Y MAIN PCB CASE CONTROL HOLDER MOTOR HOLDER MOTOR ASS Y HOLDER MOTOR CLIP EARTH TERMINAL BLOCK BRACKET ML CONNECTOR ASS Y EVAP ASS Y EVAP ASS Y EVAP MOTOR FAN IN MOTOR FAN IN ASS Y FAN CROSS ASS Y BEARING RUBBER BEARING BEARING ASS Y BACK B...

Page 36: ...Samsung Electronics 6 3 6 2 Outdoor Unit 11 18 1 4 3 2 6 7 20 19 8 16 21 1 21 21 2 21 3 21 4 10 9 5 17 1 17 17 4 15 12 12 2 12 1 13 14 12 4 12 3 17 5 17 6 17 3 17 2 14 2 ...

Page 37: ...1 1 DB96 10624A TUBE SUCTION ASS Y ASS Y 1 13 1 DB62 40022A PACKED VALVE 1 2 10LT MIN 1 2 INCH 1 1 DB62 40055F PACKED VALVE 5 8 20LT MIN 5 8 INCH 1 14 DB96 10609A TUBE CAPILLARY ASS Y ASS Y 1 DB96 10660A TUBE CAPILLARY ASS Y ASS Y 1 DB96 10619A TUBE CAPILLARY ASS Y ASS Y 1 14 1 DB62 40039B PACKED VALVE 1 4 1 4 INCH 1 1 1 15 DB62 31772A TUBE DISCHARGE C122OT O 1 1 DB62 31880A TUBE DISCHARGE C122OT ...

Page 38: ... DB64 20035A DB64 40007B DB74 10008A DB64 40068C DB61 40009A DB63 10081A Description Ass y remocon Case remocon LOW Rubber button B IC MCU LCD Rubber button A Case remocon UPP Door remocon Window remocon Filter remocon Inlay remocon Holder remocon Cover battery Specification AS 1205ER ABS NBR SMC621A AT 025ZAR NBR ABS ABS PC PC ABS ABS ABS Q TY 1 1 1 1 1 1 1 1 1 1 1 1 1 Remark 6 5 2 5 1 5 3 5 4 4 ...

Page 39: ...20244A DB59 10012A DB39 20188B DB61 10122A Description CONNECTOR WIRE OUT ASS Y MAIN PCB ASS Y MAIN PCB TRANS POWER THERMISTOR ASS Y ASS Y PCB SUB C W DISPLAY MODULE MODULE REMOCON CONNECTOR WIRE POWER CASE CONTROL Specification AWG 16 18000BTU 24000BTU AC230V DC17V 103AT ASS Y AWG 26 GP1U271R AWM1007 PP Q TY 18000BTU 24000BTU 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Remark Parts List ...

Page 40: ...6 7 Samsung Electronics MEMO ...

Page 41: ...Samsung Electronics 6 1 6 Exploded Views and Parts List 6 1 Indoor Unit ...

Page 42: ...SCREW M COVER SCREW LF COVER TERMINAL GUARD FILTER AIR ASS Y TRAY DRAIN MOTOR STEPPING BLADE H UPP BLADE H LOW ASS Y PCB SUB HOLDER E FILTER ASS Y MAIN PCB ASS Y MAIN PCB CASE CONTROL HOLDER MOTOR HOLDER MOTOR ASS Y HOLDER MOTOR CLIP EARTH TERMINAL BLOCK BRACKET ML CONNECTOR ASS Y EVAP ASS Y EVAP ASS Y EVAP MOTOR FAN IN MOTOR FAN IN ASS Y FAN CROSS ASS Y BEARING RUBBER BEARING BEARING ASS Y BACK B...

Page 43: ...Samsung Electronics 6 3 6 2 Outdoor Unit 11 18 1 4 3 2 6 7 20 19 8 16 21 1 21 21 2 21 3 21 4 10 9 5 17 1 17 17 4 15 12 12 2 12 1 13 14 12 4 12 3 17 5 17 6 17 3 17 2 14 2 ...

Page 44: ...1 1 DB96 10624A TUBE SUCTION ASS Y ASS Y 1 13 1 DB62 40022A PACKED VALVE 1 2 10LT MIN 1 2 INCH 1 1 DB62 40055F PACKED VALVE 5 8 20LT MIN 5 8 INCH 1 14 DB96 10609A TUBE CAPILLARY ASS Y ASS Y 1 DB96 10660A TUBE CAPILLARY ASS Y ASS Y 1 DB96 10619A TUBE CAPILLARY ASS Y ASS Y 1 14 1 DB62 40039B PACKED VALVE 1 4 1 4 INCH 1 1 1 15 DB62 31772A TUBE DISCHARGE C122OT O 1 1 DB62 31880A TUBE DISCHARGE C122OT ...

Page 45: ... DB64 20035A DB64 40007B DB74 10008A DB64 40068C DB61 40009A DB63 10081A Description Ass y remocon Case remocon LOW Rubber button B IC MCU LCD Rubber button A Case remocon UPP Door remocon Window remocon Filter remocon Inlay remocon Holder remocon Cover battery Specification AS 1205ER ABS NBR SMC621A AT 025ZAR NBR ABS ABS PC PC ABS ABS ABS Q TY 1 1 1 1 1 1 1 1 1 1 1 1 1 Remark 6 5 2 5 1 5 3 5 4 4 ...

Page 46: ...20244A DB59 10012A DB39 20188B DB61 10122A Description CONNECTOR WIRE OUT ASS Y MAIN PCB ASS Y MAIN PCB TRANS POWER THERMISTOR ASS Y ASS Y PCB SUB C W DISPLAY MODULE MODULE REMOCON CONNECTOR WIRE POWER CASE CONTROL Specification AWG 16 18000BTU 24000BTU AC230V DC17V 103AT ASS Y AWG 26 GP1U271R AWM1007 PP Q TY 18000BTU 24000BTU 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Remark Parts List ...

Page 47: ...6 7 Samsung Electronics MEMO ...

Page 48: ... MILD SELECT FAN SPEED SELECT BLADE H MOVING SELECT SWING SELECT ON OFF TIMER SELECT SLEEP SELECT TIME SETTING COM CONTROL SIGNAL STEPPING MOTOR CONTROLSIGNAL BUZZERCONTROL SIGNAL TRIGER SIGNAL SSR COM DRIVE STEPPING MOTOR DRIVE BUZZER DRIVE RESET CIRCUIT OSCILLATION CIRCUIT AUTO OFF SWITCH INDICATOR PANNEL OPER LED TIMER LED FAN ONLY LED TURBO LED INDOOR FAN MOTOR COM STEPPING MOTOR BUZZER VOLTAG...

Page 49: ...rating cycle temperature and pressure Operating Condition STD Pressure kg cm2 G 3 WAY V V Piping Temp Use Temp Condition C T1 T2 Indoor Outdoor DB 27 29 21 10 12 16 18 1 4 4 0 5 0 Cooling Standard Max over load Low temp 10 12 14 18 1 4 19 19 16 35 54 21 24 24 16 WB WB DB ...

Page 50: ...Samsung Electronics 7 3 MEMO ...

Page 51: ...Samsung Electronics 9 1 9 Wiring Diagrams 9 1 Indoor Unit AS 180UE AS181UE AS18A1UD AS18A1UE AS 2408BR ...

Page 52: ...R 220 240V 50Hz 200 220V 50Hz NAME TB1 2 TERMINAL BLOCK FM FAN MOTOR 52C MAGNETIC CONTACTOR CP CAPACTOR F FUSE S SPARK KILLER 9 2 1 AS180UE AS181UE US18A1UD US18A1UE 9 2 2 AS 2408BR AS 2408BR CP 40 2 5µF x 450VAC NAME TB1 2 TERMINAL BLOCK FM FAN MOTOR 52C MAGNETIC CONTACTOR CP CAPACTOR F FUSE 250V 2A S SPARK KILLER ...

Page 53: ...rom without prior written permission of Samsung Electronics Co Ltd NoteMaster 486P Series Service manual First edition June 1994 Printed in Korea Trademarks IBM is a registered trademark and IBM PS 2 Personal System 2 MCA Micro Channel AT XT Monochrome Graphics Adapter MDA Color Graphics Adapter CGA enhanced Graphics Adapter EGA and Video Graphics Array VGA are trademarks of International Business...

Page 54: ...Samsung Electronics 10 1 10 Schematic Diagrams 10 1 Indoor Unit ...

Page 55: ...Samsung Electronics 10 2 10 2 Remote Control ...

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