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SERVICE

Manual

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

INDOOR
AQT24A1QE/B
AQT24B1QE/B
AQT18A1QE/B
AQT18B1QE/B

INDOOR
AQT24A2QE/B
AQT24B2QE/B
AQT18A2QE/B
AQT18B2QE/B

Содержание AQT18A1QE/B

Страница 1: ...ons 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 INDOOR AQT24A1QE B AQT24B1QE B AQT18A1QE B AQT18B1QE B INDOOR AQT24A2QE B AQT24B2QE B AQT18A2QE B AQT18B2QE B ...

Страница 2: ... Samsung Electronics Co Ltd DEC 1998 Printed in Korea Code No DB81 00029A 1 ...

Страница 3: ...ng into a power cord This practice may result in malfunction or fire 6 After completing repairs and reassembly check the insulation resistance Procedure Prior to applying power measure the resis tance between the power cord and the ground terminal The resistance must be greater than 30 megohms 7 Make sure that the grounds are adequate 8 Make sure that the installation conditions are satisfactory R...

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

Страница 5: ...oprocessor I C Thermostat Wireless remote control Q Timer 24 Hour ON or OFF 3 Steps and Turbo 1 Step Manual Auto Reciprocating Tecumseh R22 1600g Capillary tube 45 43 41 58 Flare type 10 6 35 1 4 15 88 5 8 Optional Hanger plate AQT18A1 B1 QB AQT18A2 B2 QB Heat Pump 220V 60Hz 4 000 5 040 16 000 20 000 13 5 14 0 2 5 187 253 10 5 10 5 2 25 2 1 97 4 90 9 7 1 9 5 52 Microprocessor I C Thermostat Wirele...

Страница 6: ...e C Operating amp Ambient temp Run capacitor µF x VAC Type Dia and length mm Fan motor model Pols rpm at240V Normal output W Coil resistance Ambient temp 20 C Ω Safety devices Type Operating temp Open C Close C Run capacitor µF x VAC Coil Rows x Steps Fin pitch mm Face area m2 UQT24A1 B1 QE UQT24A2 B2 QE Reciprocating AWG5532EXC 2660 WITCO LP200 OR EQUIVALENT INITIAL 1125 REFILL 1066 0 92 Start wi...

Страница 7: ...Samsung Electronics 2 3 2 3 Dimensions 2 3 1 Indoor Unit 2 3 2 Outdoor Unit 2 3 2 a 24K BTU Front view 1080 204 Remote control Rear view Front view Rear view 660 878 58 22 ...

Страница 8: ...Product Specifications 2 4 Samsung Electronics 2 3 3 b 18K BTU Front view Rear view 582 787 340 ...

Страница 9: ...2 5 Samsung Electronics 2 4 Pressure Graph 24K BTU 18K BTU ...

Страница 10: ...2 6 Samsung Electronics MEMO ...

Страница 11: ...f Use this button to reserve the timer on Set up the time that operation stop Set up the time that operation start Each time you press this button FAN SPEED is changed in the following order Adjusts air flow vertically Use this button for sleep operation The SLEEP mode can be selected at COOL and HEAT mode Set up the reserve or cancel the timer on and timer off quickly Use this button to provide h...

Страница 12: ...unit operates in DRY mode Compressor ON OFF Time is controlled compulsorily can not set up the fan speed always breeze Protective function Low temperature release Prevention against freeze 5 TURBO MODE This mode is available in AUTO COOL HEAT DRY FAN MODE When this button is pressed at first the air conditioner is operated powerful state for 30 minutes regardless of the set tempera ture room tempe...

Страница 13: ... displays the polling state sequentially The LCD also displays the time remaining 11 24 Hour ON OFF Real Setting Timer The air conditioner is turned ON at a specified time using OFF TIMER The air Conditioner is turned OFF at a specified time using ON TIMER Only timer LED lights on OFF TIMER Both timer and operation LED lights on 12 SELF Diagnosis 13 BUZZER SOUND Whenever the ON OFF button is press...

Страница 14: ... 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 you ins...

Страница 15: ...Drain hose installation Cut the piping hole sloped slightly Piping Liquid 1 4 Clamper tube Installation plate Installation tube Pipe connection Vinyl tape Screw Putty Drain hose Piping may be laid to the rear left right or down Right Rear Down 125mm ormore 125mmormore Rear Left 3 2 5 6 4 10 1 2 3 4 5 6 7 8 9 10 1 Remote control Remote control holder 18K BTU Piping Gas 1 2 24K BTU Piping Gas 5 8 ...

Страница 16: ... bolts the anchor bolts must not project by more than 20mm 4 Determine the positions of the wooden uprights to be attached to the window frame 5 Attach the wooden uprights to the window frame in a manner appropriate to the weight of the indoor unit 6 Using tapped screws attach the installation plate to the wooden uprights as illustrated in the last figure oppo site On delivery the indoor unit is l...

Страница 17: ...ssembly 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 3 Remove the screw securing the connector cover 4 Pass the assembly cable through the rear of the indoor unit and c...

Страница 18: ...onnected to upper lowerterminalofauxiliarypowerS W Indoorunit connector wireshould beconnectedto bothindoorunit connectorandoutdoorunit terminalboardasshowninthe figurebelow In heatingand deiceoperation condensedwater may be generated Installdrainlineasfollowingprocedure 1 Insertthedrainpluginto basehole 2 Andthenconnectdrain hosetodrainplug distributind board Auxiliary power S W EARTH WIRE EARTH ...

Страница 19: ...ipe cutter Tools used 2 Remove burrs at the tip of the pipe cut Caution Burrs not removed may result in leakage of gas 3 Insert a flare nut into the pipe and modifty flare Unproper flaring Outer diameter A mm ø6 35mm 1 3 ø9 52mm 1 8 ø12 7mm 2 0 ø15 8mm 2 2 Oblique Raughness Burr Pipe Reamer Inclined Surface damaged Cracked Uneven thickness D A ...

Страница 20: ...e the cap of each valve 8 Check each valve for leakage 5 Open the service valve cap of the 3 way valve and press the needle valve to discharge gas for 3 seconds and leave it for about 1 minute Repeat the above procedure for 3 times to purge air Leaking If leaking tighten the flare nut one more time If continues to leak although the pipe fixing area has been tightened again repair the leaking area ...

Страница 21: ...side to the service valve and open the 3 way valve again 5 Check the pressure indicated by the pressure gauge low pressure side Standard pressure is should be 4 5 5 5kg cm2 in a reqular high operation mode 6 Open the refrigerant tank and fill with refrig erant until the rated pressure is reached It is recommended not to pour the refrigerant in too quickly but gradually while operating a pressure v...

Страница 22: ... Side 160 300 500 700 200 350 550 750 Fixing Torque Final Torque Torque kg cm Connection Pipe Length 5m Max 5 10m Air Purge Method Refer to the detailed Air Purge Procedure Refrigerant Adjustment Unnecessary Add A of refrigerant R 22 for every 1m Air Purge Method Purge air using a vaccum pump or an additional refrigerant cylinder Refrigerant Quantity refer to specification sheet Add A of refrigera...

Страница 23: ...o this procedure when the unit is relocated 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 material entering 5 Disc...

Страница 24: ...ond 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 Loosen two fixing 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 lower part of discharge and push it up Caution Assemble the front ...

Страница 25: ... 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 4 If pulling the Main PCB up it will be taken out Separate the TRANS hook it before 1 Do 1 and 2 3 above 2 Loosen two fixing earth screws of right side 3 Separate the connection pipe 4 Separate the bush body at the upper side and holder at the rearside ...

Страница 26: ...edure Remark 3 Fan Motor and Cross Fan 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 ...

Страница 27: ... 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 ...

Страница 28: ...4 5 Samsung Electronics MEMO ...

Страница 29: ... 9 The compressor 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 reoper ated The same phenomenon occurs when a power is on As a phenomenon that the compressor is reoperated after ...

Страница 30: ...5VDC Is voltage of 1 indoor fan of the micom normal Is voltage at 32 terminal of the Micom normal 0VDC Is voltage at 64 terminal of the Micom normal 5VDC Is the input rating 10 range applied to the primary side of the power transformer Check linkage between power cord and terminal tap Check fuse Is 14 18VAC appear in the secondary side of the power transformer Replace power transformer YES NO YES ...

Страница 31: ...eshooting After unplugging out the power cord should be reconnected within five seconds Does the operating lamp Green blink Does the Solid State Relay SS71 work properly Is the supply voltage of the fan motor sufficient Test rod location PCB CN73 Condition Fan operate AC 180V Normal voltage Pin 3 Pin 5 YES YES YES NO NO NO Check as in the procedur NO power parts Refer tp page 5 2 Microcomputer is ...

Страница 32: ...power cord should be recon nected within five seconds Does the operating lamp blink YES YES NO NO NO NO NO YES NO Outdoor unit is out of order Power relay is out of order Power relay should be replaced PCB should be checked PCB is out of order PCB and Room tempera ture sensor should be checked Room temperature sensor is out of order Check as in the procedure No Power parts Refer to page 5 2 YES Is...

Страница 33: ...ty Driver IC05 KID65003 is faulty Micom IC04 is faulty Normal Check as in the procedure No Power parts Refer to page 5 2 5 2 5 In the Heat mode When there is no warm air current Check this first 1 Is the set temperature of Remote Control lower than room temperature in Heat mode 2 Is the Indoor PCB properly connected with the CN71 and CN78 connector After training on the heating operation should st...

Страница 34: ...on Micom is faulty Receiver module is faulty Q601 C4375Y or Q602 C1623Y is faulty IR LED CL 1L5EU is faulty sound heard from the indoor unit when ON OFF but ton on the remote control unit pushed Voltage of battery less than 2 5V Remote Control Unit LCD display status of REMOCON normal Voltage at PIN 30 of Remocon Micom change Voltage at collecter of Q601 or Q602 change Voltage at pin 26 of micom I...

Страница 35: ...n 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 soldering ...

Страница 36: ...ndary 14 18Vac 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 Voltage check 1 Voltage of relay RY71 coil Voltage at PIN 11 PIN 12 PIN 15 of IC07 12VDC 2 Voltage at Terminal Tap TB71 or 72 and RY71 Terminal N0 4 rating voltage 10 range 1 Compressor does not operate 1 Compressor does not operate 1 Voltage ...

Страница 37: ... 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 Resistance Red ...

Страница 38: ...Samsung Electronics 6 1 6 Exploded Views and Parts List 6 1 Indoor Unit ...

Страница 39: ...P EARTH WIRE TERMINAL BLOCK ASS Y MOTOR FAN IN MOTOR FAN IN ASS Y C F FAN ASS Y HOLDER BEARING RUBBER BEARING HOLDER BEARING BEARING ASS Y MAIN PCB ASS Y MAIN PCB ASS Y MAIN PCB ASS Y MAIN PCB ASS Y TERMISTOR CASE CONTROL ASS Y BACK BODY HOLDER PIPE PLATE HANGER TRANSFORMER HIPS HIPS PC PC PP ASS Y PP POLYESTER CARBON POLYESTER COTTON ABS V0 HIPS AQ24B1QE B AS24A1QE B ASS Y MP24S ABS PLATE1 2 5 8 ...

Страница 40: ...Samsung Electronics 6 3 17 8 9 10 16 7 6 11 1 4 3 2 5 18 1 18 6 18 7 18 5 18 4 18 2 18 3 12 13 1 15 1 15 15 4 15 5 15 3 15 2 14 1 14 14 3 13 13 2 14 2 6 2 Outdoor Unit 6 2 1 18K BTU ...

Страница 41: ... ASS Y CONDENSER COVER CONTROL ASS Y CABI BACK TOP COVER COMPRESSOR COMPRESSOR GROMMET ISOLATOR NUT WASHER ASS Y 4WAY V V PACKED V V 1 2 4WAY V V ASS Y CHECK V V TUBE CAPI C PACKED V V 1 4 TUBE CAPI H ASS Y CONTROL OUT ASS Y CONTROL OUT SWITCH MAGNET SWITCH MAGNET CAPACITOR DUAL CAPACITOR DUAL TERMINAL BLOCK SPARK KILLER FUSE CLOTH SOUND CLOTH SOUND UP CONNECTOR POWER CONNECTOR WIRE CONNECTOR WIRE...

Страница 42: ...6 5 Samsung Electronics 6 2 2 24K BTU 17 8 16 7 6 11 1 4 3 2 5 10 18 1 18 6 18 7 18 4 18 2 18 3 12 13 1 15 1 15 15 4 15 5 15 3 15 2 14 1 14 14 3 13 13 2 14 2 9 ...

Страница 43: ... ASS Y CONDENSER COVER CONTROL CABI SIDE OUT TOP COVER COMPRESSOR COMPRESSOR ASS Y 4WAY V V PACKED V V5 8 4WAY V V ASS Y CHECK V V TUBE CAPI C PACKED V V 1 4 TUBE CAPI H ASS Y CONTROL OUT ASS Y CONTROL OUT SWITCH MAGNET SWITCH MAGNET CAPACITOR DUAL CAPACITOR DUAL TERMINAL BLOCK SPARK KILLER FUSE CLOTH SOUND COMP CLOTH SOUND UP CONNECTOR POWER CONNECTOR WIRE CONNECTOR WIRE DRAIN PLUG OUT NUT FLANGE...

Страница 44: ... 10790B PH M2 DB67 60061A DB67 60062A DB67 60063A 90 X 250 DB93 40179C DB61 40243A Description 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 Specification ABS ABS ABS ABS PC SILICON PC PC ART 90 ART 90 PH M2 SUS 304 SUS 304 SUS ...

Страница 45: ...93 10599B DB26 10065B CASE CONTROL ASS Y MAIN PCB ASS Y MAIN PCB ASS Y MAIN PCB ASS Y MAIN PCB ASS Y THERMISTOR ASS Y PCB DISPLAY ASS Y PCB DISPLAY TRANSFORMER ABS PD Q24B1Q 03 PD Q24B1Q 06 PD Q24B1Q 04 PD Q24B1Q 07 103AT 240 240 ROUND EDGE AC230V DC17 1 1 A1 B1 1 A2 B2 1 1 B1 B2 1 A1 A2 1 1 1 A1 B1 1 A2 B2 1 1 B1 B2 1 A1 A2 1 CODE NO Description Specification Q TY 24K BTU 18K BTU Remark ...

Страница 46: ...6 9 Samsung Electronics MEMO ...

Страница 47: ... Cycle Block Diagram INDOOR UNIT OUTDOOR UNIT Heat exchanger Evaporator Gas side 3 way valve 2 way valve Liquid side Capillary tube Cooling Gas leak check point Heat exchanger Condenser Heating Capillary tube Check valve Compressor 4 way valve T T Accumulator ...

Страница 48: ...Samsung Electronics 8 1 8 PCB Diagrams 8 1 Main PCB B B B ...

Страница 49: ...00262 3711 000879 3711 000940 3711 001038 3711 001036 3711 001154 B3068 0092 DE39 60001A DB47 90053A 2305 001027 Description FUSE HOLDER FUSE IC VOLT REGU HEAT SINK SCREW PH IC VOLT REGU C FILM FILTER NOISE R CARBON R CARBON R CARBON R CARBON R CARBON R CARBON R CARBON R CARBON R CARBON R METAL FILM DIODE RECT THYRISTOR BUZZER C CERAMIC C CERAMIC C CERAMIC C ELEC C ELEC C ELEC C ELEC IC MCU IC RSO...

Страница 50: ...CASE CENTER PCB UP R CASE CENTER PCB LOW SEAL C T PCB UP SEAL C T PCB LOW A PCB DISPLAY LED LAMP LED LAMP LED LAMP LED LAMP JUMP WIRE MODULE REMOCON C CERAMIC R CARBON CONNECTOR WAFER C CERAMIC DIODE SWITCHING C W DIS MODULE R CASE CENTER PCB UP R CASE CENTER PCB LOW SEAL C T PCB UP L SEAL C T PCB UP R SEAL C T PCB LOW A Specification FR 1 T1 6 W16 5 L142 5 LTL 30EHJ ORG GRN SY5511 YEL SM5511 GRN ...

Страница 51: ...Samsung Electronics 9 1 9 Wiring Diagrams 9 1 Indoor Unit ...

Страница 52: ...Samsung Electronics 9 2 9 2 Outdoor Unit MARK NAME MARK NAME 52C MAGNETIC CONTACTOR TB 1 2 TERMINAL BLOCK 20S SOLENOID COIL CH CRANK CASE HEATER C1 CAPACITOR FM1 FAN MOTOR F FUSE 2A 250V S SPARK KILLER ...

Страница 53: ... may not in whole or in part be copied photocopied reproduced translated or converted to any electronic or machine readable from without prior written permission of Samsung Electronics Co Ltd SyncMaster 17GLi CMG7387L Service Manual First edition June 1995 Printed in Korea Trademarks Samsung is a registered trademark and SyncMaster 17GLi CMG7387L and MacMaster Cable Adapter are trademark of Samsun...

Страница 54: ...Samsung Electronics 10 1 10 Schematic Diagrams 10 1 Indoor Unit PNA4612MOOXD ...

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