Samsung AQ07ACVE Service Manual Download Page 41

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Samsung Electronics

5-13

5-4 Fault Diagnosis of Major Parts

Parts

Temp.Sensor

Heat ex. Sensor

Indoor Fan Motor

Outdoor Fan Motor

Stepping Motor

(UP/DOWN swing motor)

Diagnosis

Measure resistance with a tester.

Normal

Ω

~27

Ω

at ambient temperature (+0°C ~ +30°C)

Abnormal

∞

, O

Ω

… open or short

Measure resistance between terminals (CN72) with a tester

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.

380

Ω

at ambient temperature (20°C ~30°C)

Abnormal

∞

, O

Ω

… open or short

between

Resistance

Red, Yellow

190±10

Ω

Red, Blue

170±10

Ω

between

Voltage

Gray, Orange

05V~4.5V

Yellow, Orange

between

Resistance

Black, White

350±10

Ω

Black, Red

270±10

Ω

TSH00-9 5/31/01 1:57 PM Page 5-13

Summary of Contents for AQ07ACVE

Page 1: ...stallation 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 UNIT AQ07ACVE AQ09ACVE AQ12ACVE SH07CA1 SH09CA1 SH12CA1 OUTDOOR UNIT UQ07ACVE UQ09ACVE UQ12ACVE SH07CA1X SH09CA1X SH12CA1X ...

Page 2: ...ELECTRONICS Samsung Electronics Co Ltd Mar 2000 Printed in Korea Code No DB81 00143A 1 ...

Page 3: ... 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 Relocate...

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

Page 5: ...8 2 98 0 17 2 250V10 16A 3 15 815x298x182 720x532x245 32 08x11 73x7 17 28 35x20 94x9 65 9 6 32 ø6 35x5 ø9 52x5 ø17x2 Rotary 800 Cross fan Propeller Resin Steel 35 20 2Row12Step 1Row20Step Capillarytube 362 650 MRA12086 12008 Perfor mance Power Size SH09CA1 AQ09ACVE Indoorunit Outdoorunit Wall mounting 8700 1 1 10 000 6 5 7 0 39 50 39 50 9 3 11 1 1 220 240 50 930 900 4 3 4 5 96 6 96 2 22 2 250V10 1...

Page 6: ... Outdoor Unit Air in Front view Remote control Rear view Air out Installation plate Samsung Electronics 245 720 55 496 11 20 267 532 AQ07ACVE SH07CA1 AQ09ACVE AQ12ACVE SH09CA1 SH12CA1 Front view Rear view Rear view 295 532 555 280 762 Front view 22 45 115 ...

Page 7: ...TDOOR UNIT Heat exchanger Evaporator Gas side 3 way valve 2 way valve Liquid side Capillary tube Cooling Gas leak check point Cross fan Heat exchanger Condenser Propeller fan Heating Capillary tube Check valve Compressor 4 way valve T1 T2 Samsung Electronics ...

Page 8: ...2 4 MEMO Samsung Electronics ...

Page 9: ...automatically after a given period of time that is from 30 minutes to 24 hours To cancel the On Time press the Set Cancel button Each time you press this button Mode is changed in the following order Temp down button To decrease the temperature by the pressing the temperature button Temp up button To increase the temperatute by the pressing the temperature button FUNCTION OF KEY 3 1 1 Name Functio...

Page 10: ... room temperature The 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 t...

Page 11: ... When OFF timer button is pressed at oper ating state LCD 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 3 minutes de...

Page 12: ... 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 13: ...lation 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 70mm or more 250mm ormore 200mmormore Rear Left 3 1 5 6 7 4 9 10 1 2 3 4 5 6 7 8 9 10 2 Remote control H metere s maximum Remote control holder 7K 9K BTU Piping Gas 3 8 12K ...

Page 14: ...ts 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 loade...

Page 15: ... of the assembly cable into the outdoor unit refer to page 3 8 3 2 2 d Installing and Connecting the Indoor Unit Drain Hose Care must be taken when installing the drain hose for the indoor unit to ensure that any condensa tion water is correctly drained outside l When passing the drain hose through the 65mm hole drilled in the wall check that none of the following situations occur To install the d...

Page 16: ... in the installation dia gram of indoor and outdoor unit Wiring connection Installing and Connecting the Outdoor Unit Drain Hose N 1 2 3 4 Ass y cover valve RO Hand cabi RH Drain hole When using the air conditioner in the heating ice may accumulate Duting de icing the condensed water must be drained off safely Consequently you must install a drain hose on the outdoor unit following the instruction...

Page 17: ...a pipe 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 90 D A Oblique Raughness Burr Pipe Reamer Inclined Surface damaged Cracked Uneven thickness D A ...

Page 18: ...ease recheck that pressure is staloilization 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 Conne...

Page 19: ...cuum the system with pump for over 1 hour 7 Stop operation of the air conditioner 9 Close the cap of each valve 2 Repair the leak point 5 Refill the system with the rated weight of refrigerant 6 Operate the system and check the pressure indicated by the gauge low pressure side Recommended low pressure is 4 5 5 5kg cm2 refer to the graph in 3 12 page 8 Disconnect the pressure gauge from the packed ...

Page 20: ...7C Add as liquid state for every 1m Air Purge Method Purge air using a vaccum pump Refrigerant Quantity refer to specification sheet Add 10g of refrigerant R407C Add as liquid state for every 1m MODEL NAME AQ07ACVE SH07CA1 Low Pressure kg cm2G Pressure Graph Outdoor inlet air D B temp 7 00 6 00 5 00 4 00 3 00 20 25 30 35 40 45 21 5 15 0 27 0 19 0 32 4 24 0 MODEL NAME AQ07ACVE SH07CA1 Low Pressure ...

Page 21: ... air conditioner Refer to 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 ...

Page 22: ...3 14 Samsung Electronics MEMO ...

Page 23: ...e 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 Loosen three 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...

Page 24: ... 1 Do 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 rear...

Page 25: ...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 ...

Page 26: ...n Work 1 Loosen the fixing screw and separate the Handle Cabi RH 2 Separate the connection wire from the termi nal block 3 Loosen 6 fixing screws and separate the upper cabinet 4 Loosen the 2 fixing screws of Ass y E part 5 Loosen 5 fixing screws and separate the side cabinet ...

Page 27: ...cedure Remark 2 Fan Motor 1 Loosen fixing screw of the Guard Fan 2 Turn the Guard Fan to separate from the Cabi Front 4 Remove the nut flange Turn to the right to remove as it is a left hand screw 5 Separate the fan 6 Loosen four fixing screws to separate the motor ...

Page 28: ...4 6 MEMO Samsung Electronics ...

Page 29: ...f the indoor unit lights up and the air conditioner does not operate 6 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 ...

Page 30: ...VDC Is voltage of 60 indoor fan of the micom normal Isvoltageat 33terminaloftheMicomnormal 0VDC Isvoltageat 18terminaloftheMicomnormal 5VDC Is 198 264VAC applied to the between TB71 and 4 of RY71 Check linkage between power cord and terminal tap Check fuse Is 11 12 5 VDC appear in the input side of the DC reg ulator IC KA7805 IC02 Refer to Replace PCB module YES NO YES NO YES YES YES NO YES YES YE...

Page 31: ... 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 Pin3 Pin5 YES YES YES NO NO NO Check as in the procedur NO power parts Refer tp page 5 2 Microcomputer is out of orde...

Page 32: ...d should be reconnected within five sec onds Does the operating lamp blink YES YES NO NO NO 1 YES 3 2 NO YES 1 NO 2 NO Outdoor unit is out of order Power relay is out of order Power relay should be replaced PCB should be checked Microcomputer is out of order PCB should be checked Room temperature sensor is out of order Check as in the procedure No Power parts Refer to page 5 2 YES 3 Is the room se...

Page 33: ...g Does operation start when swing button of the remote control unit pushed Voltage at pin 33 36 of micom ICO4 change Squarewave Volatge at pin 10 11 12 13 of IC05 KID65003 change Squarewave UP DOWN louver motor is faulty Driver IC05 KID65003 is faulty Micom IC04 is faulty Normal Check as in the procedure No Power parts Refer to page 5 2 After training on the heating opera tion should start in five...

Page 34: ... Q601 C4375Y or Q602 C1623Y is faulty IR LED CL 1L5EU is faulty 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 PIN 30 of Remocon Micom change Voltage at collecter of Q601 or Q602 change Voltage at pin 26 of micom IC04 change INDOOR UNIT Micom IC04 is faulty T...

Page 35: ...Troubleshooting 5 2 7 Replace PCB module Remove power cord Replace the PCB module Check the connection and plug in Does all display lamp blink or STD lamp blink Replace another PCB module Refer to set up the Model option 5 2 8 ...

Page 36: ...e temperature raise down key simultane ously 3 Insert the battery again Result If the screen of remocn dis plays as shown in the right go to the second step 2nd step Method If the first digit of LCD is 0 on the remocon screen go to the 3rd step If it is 1 press the mode key once to change to 0 and go to the 3rd step 3rd step Method Press the marked key to input the option number example 021E31 Res...

Page 37: ...ound Ding or Diriring is heard and then the input of option is completed Refer to the right side if the error appears ERROR MODE 1 When the lamp STANDARD NATURE TIMER is flickering failute of option input After removing the set power cord and insert it again pressing the operation on off key to retry and if the condition is same EPROM is deffcec tive or misinsertted So replace the PCB 2 When all l...

Page 38: ...2 SEG3 SEG4 SEG5 SEG6 SEG7 SEG8 SEG9 SEG10 SEG11 SEG12 AQ07ACVE SH07CA1 AQ09ACVE SH09CA1 AQ12ACVE SH12CA1 0 0 0 0 0 0 5 5 5 5 5 5 4 4 5 5 6 6 b b A A C C 0 0 0 0 0 0 4 4 4 4 5 5 1 1 1 1 1 1 d d d d d d 2 2 2 2 2 2 0 0 0 0 0 0 8 8 C C F F 4 4 8 8 b b REMOCON MODEL ...

Page 39: ...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 soldering...

Page 40: ...oltage at IN and GND of IC02 KA7805 12VDC 3 DC voltage at OUT and GND of IC02 5VDC 4 DC voltage at Q201 Base and GND change squarewave Voltage check 1 Voltage of relay RY71 coil Voltage at pin 12 pin 7 of IC06 12VDC 2 Voltage at Terminal Tap TB71 or 72 and RY71 Terminal N0 4 198 264V 1 Compressor does not operate 1 Voltage at 3 5 both ends of CN73 above 180V 2 Indoor unit fan motor does not operat...

Page 41: ...l 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...

Page 42: ...Samsung Electronics 6 1 6 Exploded Views and Parts List 6 1 Indoor Unit AQ07ACVE SH07CA1 AQ09ACVE SH09CA1 AQ12ACVE SH12CA1 ...

Page 43: ...30E DB61 40247A DB70 10618A GRILLE AIR INLET PANEL CENTER DISPLAY GUARD AIR FILTER ASS Y FILTER COVER TERMINAL ASS Y FRONT PANEL ASS Y PCB DISPLAY ASS Y TRAY DRAIN ASS Y STEP MOTOR BLADE H ASS Y EVAP ASS Y EVAP SPACER EVAP ASS Y HOLDER MOTOR ASS Y TERMINAL BLOCK MOTOR FAN IN ASS Y FAN ASS Y BEARING ASS Y THERMISTOR POWER CORD IN CASE CONTROL BUSH BODY ASS Y BACK BODY HOLDER PIPE PLATE HANGER 1 1 2...

Page 44: ...Samsung Electronics 6 3 6 2 Outdoor Unit UQ07ACVE SH07CAIX UQ09ACVE SH09CAIX UQ12ACVE SH12CAIX 24 1 24 25 25 2 25 1 25 3 ...

Page 45: ... COIL ASS Y LEAD WIRE O L P O L P O L P O L P SPRING CLOTH COMP BOTTOM CLOTH COMP BOTTOM CLOTH COMP BOTTOM CLOTH COMP SIDE CLOTH COMP SIDE CLOTH COMP UPPER COMPRESSOR COMPRESSOR COMPRESSOR GROMMET ISOLATOR NUT WASHER GASKET COVER TERMINAL NUT FLANGE ASS Y 4 WAY VALVE ASS Y 4 WAY VALVE ASS Y 4 WAY VALVE 4 WAY VALVE ASS Y CAPILLARY ASS Y CHECK VALVE ASS Y CHECK VALVE DRYER ASS Y COND ASS Y COND ASS ...

Page 46: ...Control PCB Box Samsung Electronics 6 5 Parts List No 1 2 3 4 5 6 7 Description INLAY LCD CASE TOP LCD KEY RUBBER ASS Y PCB REMOCON CASE LOW BATTERY COVER Q TY 1 1 1 1 1 1 1 Remark 6 3 1 ASS Y REMOCON DB93 00251E ...

Page 47: ... 00002A DB32 10008D DE26 20154A 2306 000294 3501 001058 DE32 10037A Description CASE CONTROL Ass y main PCB Ass y main PCB Ass y main PCB Micom Thermistor EVAP Trans power C film Power relay Fuse Specification MB89635R 608 103AT AC230V DC17V 300mA CFS 99N 450VAC 155K DI1U DC12V 250V 3 15A Q TY AQ07ACVE AQ09ACVE AQ12ACVE SH07CA1 SH09CA1 SH12CA1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Remark...

Page 48: ...6 7 Samsung Electronics MEMO ...

Page 49: ... TEMPERATURE SELECT SLEEP SELECT TIME SETTING COMPRESSOR CONTROL SIGNAL OUTDOOR FAN CONTROL SIGNAL 4 WAY VALVE CONTROL SIGNAL STEPPING MOTOR CONTROL SIGNAL BUZZER CONTROL SIGNAL TRIGER SIGNAL SSR COMPRESSOR DRIVE OUTDOOR FAN DRIVE 4 WAY VALVE DRIVE STEPPING MOTOR DRIVE BUZZER DRIVE RESET CIRCUIT OSCILLATION CIRCUIT MODESELECT SWITCH INDICATOR PANNEL OPERATION LED TIMER LED FAN ONLY LED DE ICE LED ...

Page 50: ...Samsung Electronics 8 1 8 PCB Diagrams 8 1 1 Main PCB ...

Page 51: ...WHT SMW250 06 WHT YW396 05AV RED SMW250 10 WHT FTR F3AA012E PI0 6 SN T 52MM YW396 05AV BLU 250V 1A 93LC56B I P 222M RD 1 4 TP 471 J RD 2 TP 513 J STO2D 200 TNY 255P UG2B BZX55 C3V6 BZX55 C11 PC817 PC814 R1002 DI1UDB12V KPT 1115V 250TAP 1PIN Description FUSE HOLDER FUSE 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 DIO...

Page 52: ...B LOW SEAL DISPLAY UPP SEAL CASE DISPLAY PAINT CODE NO DB41 10204C 0601 001333 0601 001059 0601 001060 0601 001196 DB32 00008A 2202 000780 2001 000515 2201 000283 0401 000005 DB39 20346A DB61 10191A DB63 10494A DB72 10233A DB72 10220F Specification FR 1 T1 6 W20 L170 LTL 30EHJ ORG GRN SY5511 YEL SM5511 GRN SO5511 ORG KSM 313TC5 CA OA 50V 104Z RD 1 8TP 221 J YWLA200 09P CA OA 50V 102Z 1N4148 UL1007...

Page 53: ...Samsung Electronics 9 1 9 Wiring Diagrams 9 1 Indoor Unit AQ07ACVE AQ09ACVE AQ12ACVE SH07CA1 SH09CA1 SH12CA1 TERMINAL BLOCK N POWER N 1 COMPRESSOR 2 OUT FAN H 3 OUT FAN L 4 4 WAY VALVE ...

Page 54: ...ctronics 9 2 9 2 Outdoor Unit UQ07ACVE SH07CAIX 1 0 35µF X 450VAC CAPACITOR UQ09ACVE SH09CAIX 1 2 30µF X 450VAC UQ12ACVE SH12CAIX 1 5 35µF X 450VAC UQ07ACVE SH07CAIX UQ09ACVE SH09CAIX UQ12ACVE SH12CAIX DB68 01172A ...

Page 55: ...Samsung Electronics 10 1 Indoor Unit AQ07ACVE SH07CA1 AQ09ACVE SH09CA1 AQ12ACVE SH12CA1 10 1 10 Schematic Diagrams 1K 1 8W ...

Page 56: ...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 Samsung...

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