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Samsung AF28FVSDA Series, Service Manual

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Samsung AF28FVSDA Series Service Manual Download Page 73

Troubleshooting

Samsung Electronics

4-27

4-4-19 Prohibiting cooling and heating maneuvers error

Indoor unit display

(Prohibiting heating maneuver error)
(Prohibiting cooling maneuver error)

Outdoor unit display

●

(YEL)

  ◎

(GRN)

  ○

(RED)

1.   Cause of malfunction
 

1) Problematic temperature sensor

 

2) Faulty sensor itself

2.   Check procedure
 

1) Check connection condition of temperature sensor to the outdoor unit PBA

 

2) Check outside temperature (Prohibiting cooling: under -5°C, prohibiting heating: over 30°C)

Summary of Contents for AF28FVSDA Series

Page 1: ...it Outdoor Unit AF28FVSDASSN AF28FVSDASSX AF28FVZDASSN AF28FVZDASSX KFR 72L EMS1 KFR 72W EMS1 KFR 50L EMS1 KFR 50W EMS1 AF28FSSDASSN AF28FSSDASSX AF28FSZDASSN AF28FSZDASSX AF27FSSDASSN AF27FSSDASSX AF...

Page 2: ...deis indicatedontheindoortemperaturedisplayarea 4 12 4 4 4 When indoor temperature sensor error code is indicated on the indoor temperature display area 4 13 4 4 5 When indoor pipe sensor error code i...

Page 3: ...4 35 4 4 28 When the remote controller stops working 4 36 4 4 29 When the touch buttons stop working 4 37 15 PCB Diagram 5 1 5 1 PCB Diagram 5 1 5 1 1 ASS Y PCB Main IN 5 1 5 1 2 ASS Y PCB MAIN CONTR...

Page 4: ...ase any wire or power plug has been damaged replace it to eliminate any possible danger Do not bend the power cord by force and do not put any heavy object on the power cord There is a danger of elect...

Page 5: ...100 10 AF24FSSDASSN 48 8m 50 100 10 5 stage purifying system fine grade free filter four season cleaning filter antibacterial heat exchanger antibacterial fan Virus Doctor Smart sensor A camera on th...

Page 6: ...e Air conditioner operation mode Current operation mode is displayed Temperature Outdoor unit operation Mute Virus doctor Fan speed Timer Cleaning Smart sensor operation good sleep mode Air conditione...

Page 7: ...n Code No Color Model Name ASSY PANEL OUTLET DB92 02699A TWILIGHT DEEP BRONZE AF28FVSDADFN KFR 72L EMB1 AF28FSSDADFN ASSY PANLE INLET DB92 02701A ASSY PANEL OUTLET DB92 02699B TWILIGHT WHITE AF28FVZDA...

Page 8: ...WILIGHT DEEP BRONZE TWILIGHT WHITE TWILIGHT DEEP BRONZE TWILIGHT WHITE TWILIGHT WHITE Operation mode Cooling Heating Inverter Cooling Inverter Cooling Inverter Cooling Heating Inverter Cooling Heating...

Page 9: ...n Indoor Unit NET mm 360X1948X269 360X1948X269 360X1948X269 360X1948X269 360X1948X269 Outdoor Unit 880 798 310 880 798 310 880 798 310 880 798 310 880 638 310 Indoor Unit GROSS mm 469X2016X469 469X201...

Page 10: ...COLOR TWILIGHTDEEPBRONZE TWILIGHTWHITE TWILIGHTWHITE Operation mode Cooling HeatingInverter Cooling HeatingInverter Cooling HeatingInverter Cooling HeatingInverter Cooling Capacity Btu h Regular T1 28...

Page 11: ...Weak 250 250 250 Dimension IndoorUnit NET mm 360X1948X269 360X1948X269 360X1948X269 Outdoor Unit 880X950X320 880X950X320 880X950X320 IndoorUnit GROSS mm 469X2016X469 469X2016X469 469X2016X469 Outdoor...

Page 12: ...rencesinfeatures SMARTSENSOR O SMARTSENSOR O SMARTSENSOR O COLOR TWILIGHTWHITE TWILIGHTWHITE TWILIGHTWHITE Operation mode Cooling HeatingInverter CoolingInverter Cooling HeatingInverter Cooling Heatin...

Page 13: ...on IndoorUnit NET mm 360X1948X269 360X1948X269 360X1948X269 OutdoorUnit 880X798X310 880X950X320 880X950X320 IndoorUnit GROSS mm 469X2016X469 469X2016X469 469X2016X469 OutdoorUnit 1023X888X413 1023X105...

Page 14: ...t SE ASIA 1 DB68 03798A KFR SSL EMS1 DB68 03892A AF28FSSDASSN Except IRAN AF27FSSDAWKNCH For Chile DB68 03857A AF28FSSDAWKNHC For IRAN DB68 03955A AF28FVSDAWKNST For SE ASIA DB68 04033A AF27FSSDAWKNER...

Page 15: ...DB65 10088C 8 Piping tape Color IVORY 80mm X 15m DB69 01194B 2 Insulation Tape 5m DB72 30029A 1 INSULATION TUBE DB72 60033B 1 INSTALL PUTTY DB80 00013A 1 BUSHING PIPE DB81 00422A 1 SLEEVE DB81 01327A...

Page 16: ...eason filter DB91 01473C D E F This is a basic installation at the time of purchase and may be cleaned with water 4 season filter Item Descriptions Code No Remark Dust Filter1 DB63 03415A B This is a...

Page 17: ...Samsung Electronics 3 1 Necessary Tools 3 Disassembly and Reassembly Item Remarks Screw Driver Screw Driver Long Nose Pliers Monkey Spanner Spanner torque wrench...

Page 18: ...unit No Parts Procedure Remark 1 Front Please make sure the power is switched off 1 After switching off the Indoor unit operation shut off the main power 2 Ass y Panel Inlet 1 Pull out the upper part...

Page 19: ...embly and Reassembly Samsung Electronics 3 3 No Parts Procedure Remark 2 Unscrew four fastening screws on the left and right of the Ass y Support Inlet 3 Push the Ass y Support Inlet down to disassemb...

Page 20: ...Electronics No Parts Procedure Remark 3 Ass y Cover Main PCB 1 Unscrew three fastening screws on the Cover Main PCB and then lift it up slightly and pull forward to detach 2 Detach the entire housing...

Page 21: ...rocedure Remark 4 Ass yCoverTop 1 Unscrew the four fastening screws on the top of the Ass y Cover Top 2 Lift the cover ceiling up by gripping its left side 3 Disassemble three connectors Press both ho...

Page 22: ...Disassembly and Reassembly 3 6 Samsung Electronics No Parts Procedure Remark 5 Ass y Panel Outlet 1 Lift up the Ass y Panel Outlet while hooks are detached and then pull it forward...

Page 23: ...ssembly and Reassembly Samsung Electronics 3 7 No Parts Procedure Remark 6 Ass y Cover Duct 1 Unscrew two fastening screws on the top of the Ass y Cover Duct lift it up and then pull it forward to det...

Page 24: ...nd Reassembly 3 8 Samsung Electronics No Parts Procedure Remark 7 2 Unscrew three fastening screws on the bottom of the Ass y Duct Fan 3 Lift the Ass y Duct Fan up and pull it forward while the hooks...

Page 25: ...Electronics 3 9 No Parts Procedure Remark 9 Ass y EVAP UNIT AL 1 Unscrew one fastening screw to detach the Ass y Connector Wire Earth 2 Detach the temperature sensor 3 Unscrew two screws of the ASS Y...

Page 26: ...Disassembly and Reassembly 3 10 Samsung Electronics No Parts Procedure Remark...

Page 27: ...Disassembly and Reassembly Samsung Electronics 3 11 No Parts Procedure Remark 10 Ass y Case Main PCB 1 Unscrew one screw on the bottom of the Ass y Case Main PCB and pull it to detach...

Page 28: ...ly 3 12 Samsung Electronics No Parts Procedure Remark 11 Ass y CABI Body Up 1 Unscrew four fastening screws at the ASSY CABI BODY UP and the ASSY CABI BODY LOW 2 Push the ASS Y CABI BODY UP toward the...

Page 29: ...he FRAME LOW to detach 13 Ass y Frame Grille 1 Unscrew two fastening screws of the Ass y Duct Fan and the Ass y Frame Grille and detach the housing connected with the Motor Fan and the Ass y Connector...

Page 30: ...isassembly and Reassembly 3 14 Samsung Electronics No Parts Procedure Remark 4 Unscrew two fastening screws of the Ass y Frame Grille to detach the Ass y Cover Motor 5 Raise the Motor Fan up to detach...

Page 31: ...rts Procedure Remark 14 Ass yPanelGrille 1 Detach the lighting connector on the rear of the Ass y Panel Outlet 2 Unscrew twelve fastening screws on the rear of the Ass y Panel Outlet 3 Detach the Ass...

Page 32: ...sembly 3 16 Samsung Electronics No Parts Procedure Remark 4 Detach the motor wire connector and disconnect the wire from the bearings 5 Unscrew one fastening screw on the rear surface of the Ass y Pan...

Page 33: ...6 While the hooks on the left and the right are slightly lifted turn clockwise and detach the panel frame 7 Unscrew three fastening screws and then detach the cover blade 8 Unhook the transparent mol...

Page 34: ...Disassembly and Reassembly 3 18 Samsung Electronics No Parts Procedure Remark 9 Unscrew four fastening screws of the assembled blade and then detach it 10 Detach Gear Pinion B and the Guide Blade...

Page 35: ...Disassembly and Reassembly Samsung Electronics 3 19 No Parts Procedure Remark 11 Unscrew two fastening screws of the motor and then detach it...

Page 36: ...Electronics No Parts Procedure Remark 15 Ass yCoverTop 1 Unscrew two fastening screws of the Cover Display and detach it 2 Detach the display connector from the Main PCB 3 Detach the motor connector a...

Page 37: ...s 3 21 No Parts Procedure Remark 4 Unscrew two fastening screws on the left and right 5 Unscrew one fastening screw from the PCB and then detach the Ass y PCB at the cover top 6 Unscrew two fastening...

Page 38: ...w from the Ass y Gear Rack and detach the cover rack and the support rack 8 Detach the gear pinion from the motor and unscrew two fastening screws to detach the motor 9 Unhook the left and right of th...

Page 39: ...1 After switching off the Indoor unit operation shut off the Main Power 2 Ass y Cabinet Top 1 Unscrew the 9 fastening screws of the Ass y Cabinet Top to detach Use screw driver 3 Ass y Cover Control 1...

Page 40: ...Disassembly and Reassembly 3 24 Samsung Electronics No Parts Procedure Remark 4 Ass y Cabinet Back RH 1 Unscrew the 6 fastening screws of the Ass y Cabinet Back RH to detach Use Screw Driver...

Page 41: ...ectronics 3 25 No Parts Procedure Remark 5 Ass y Cabinet Front RH 1 Unscrew the fastening screw of the case control out to detach Use Screw Driver 2 Unscrew the 5 fastening screws of the Ass y Cabinet...

Page 42: ...Disassembly and Reassembly 3 26 Samsung Electronics No Parts Procedure Remark 6 Ass y Cabinet Front LF 1 Unscrew the 11 fastening screws of the Ass y Cabinet Front LF Use Screw Driver...

Page 43: ...1 Detach the 4 housings connected to the Ass y Control Out 2 Detach the cables of the Comp and the Solenoid Coil Reactor When detaching the BLDC motor connector from the PBA please do so 30 seconds af...

Page 44: ...s of the Reactor to detach Use Screw Driver 10 Fan Propeller 1 Unscrew the fastening nut of the Fan Propeller to detach Use Monkey Spanner 11 Motor 1 Unscrew the 4 fastening screws of the Motor to det...

Page 45: ...Wire Comp from the Comp Use Monkey Spanner 14 Major Repair Before major repairs please detach after removing the refrigerant inside 1 Detach the suction pipe and the discharge pipe Please detach durin...

Page 46: ...30 Samsung Electronics No Parts Procedure Remark 15 EEV welding point 2 welding points for each EEV 1 Detach the EEV Coil before beginning work 2 Wrap the EEV head with a wet towel to prevent it from...

Page 47: ...button to set it as Each time the button is pressed will be repeatedly selected Set it to Cool by pressing the button SEG3 option set up Press the button to set it as Each time the button is pressed w...

Page 48: ...9 SEG7 option set up Press the button to set it as Each time the button is pressed will be repeatedly selected 10 SEG8 option set up Press the button to set it as Each time the button is pressed will...

Page 49: ...After setting up the options code if the product is not operating properly or if the power lamp is blinking check to see if the correct options code for the product model has been set up Option Code...

Page 50: ...ndoor unit Communications error between spatial sensor module and Indoor unit Indoor temperature sensor error Indoor EVA In sensor error Indoor EVA Out sensor error Internal fan 1 error Internal fan 2...

Page 51: ...ion control External Discharge protection control Self diagnosis open EEV Prohibit cooling maneuver Prohibit heating maneuver Problematic Outdoor unit FAN Motor error Problematic compressor maneuver o...

Page 52: ...Operation Off Operation Off Page 4 14 Self diagnosis Detached EVA entrance sensor error Check temperature sensor wire Check Main PBA Operation Off Operation Off Operation Off Page 4 19 Self diagnosis...

Page 53: ...f diagnosis Check temperature sensor wire Check Outdoor unit PBA Operation Off Operation Off Operation Off Page 4 23 Temperature delivery sensor error SHORT OPEN Check temperature sensor wire Check Ou...

Page 54: ...oad Inspect compressor condition Inspect SET installation condition Check temperature sensorWIRE Operation Off Operation Off Operation Off Page 4 26 Problematic compressor incoming electric current In...

Page 55: ...on Off Operation Off Page 4 30 AC overvoltage protection Check input voltage Operation Off Operation Off Operation Off Page 4 30 Problematic incoming electric current sensor Replace Outdoor unit PBA O...

Page 56: ...dure Replace or tighten communications cable Replace Outdoor unit PBA A new EEPROM IC must be inserted Unplug Indoor unit and Outdoor unit power cords After removing the ass y control out cover plug i...

Page 57: ...Main PBA 3 Faulty Panel PBA 2 Check procedure Replace faulty Panel PBA Re inspect connection of main panel PBA wire Connect Panel PBA and Main PBA Inspect or replace connector wire No Yes Yes No When...

Page 58: ...twork PBA itself 2 Faulty WIRE between indoor camera network and Panel PBA 2 Check procedure Replace faulty Panel PBA Re inspect after power reset Faulty camera network PBA No Yes Yes No Is the voltag...

Page 59: ...problem occurs even after re soldering the micom pin due to the faulty Main PBA Yes Turn off the main power switch Turn on the main power switch Replace the Main PBA if the same problem occurs even a...

Page 60: ...ce faulty pipe sensor itselfted Replace the Main PBA if the same problem occurs even after re soldering the micom pin due to the faulty Main PBA Yes Turn on the main power switch Replace the Main PBA...

Page 61: ...otor connector while being supplied with power 2 Check procedure Check for disconnected fuse FB10 ntc or coil L10 No Yes Inspect or replace wire connected to PBA point of contact disconnection Turn on...

Page 62: ...tor Is there SHORT from FAN MOTOR WIRE PIN 1 to 6 After reassemble fan motor wire turn on the main power switch Yes Is the voltage of PIN 3 and 1 of power PBA cn40 Dc280v Dc310v No Exchange faulty POW...

Page 63: ...e of malfunction 1 When the operation mode of the problematic Indoor unit does not match that of an Indoor unit already in operation 2 When the indoor period operation mode of multi products do not ma...

Page 64: ...History mode checking method timer off ok cancel on remote controller 2 Check procedure Are the options set up properly Reconnect wire Replace Main PBA No No No Install the filter properly and fully R...

Page 65: ...t indoor unit pipe entrance temperature sensor 2 Inspect indoor unit pipe exit temperature sensor 4 4 9 When Indoor unit Terminal Block Fuse Error Indicated on the Indoor Temperature display area 1 Ca...

Page 66: ...Replace outdoor unit PBA A new EEPROM ic must be inserted After removing the ass y control out cover plug in the power cords for the indoor unit and the outdoor unit and turn power on Check for norma...

Page 67: ...After detaching the ass y control out cover detach the out disch connector from the PBA Pull out power cords for the indoor unit and the outdoor unit Yes Measure resistance on both ends of out pin usi...

Page 68: ...e After detaching the ass y control out cover detach the olp cond connector from the PBA Pull out power cords for the Indoor unit and the Outdoor unit Measure resistance on both ends of cond pin using...

Page 69: ...temperature sensor error Outdoor unit display YEL GRN RED 1 Cause of malfunction 1 Sensor detached from sensor holder 2 Sensor detached from outdoor unit PBA connector 3 Faulty sensor itself 4 Proble...

Page 70: ...re After detaching the ass y control out cover detach the out disch connector from the PBA Pull out power cords for the indoor unit and the outdoor unit Measure resistance on both ends of disch pin us...

Page 71: ...ull out power cords for the indoor unit and the outdoor unit After detaching the ass y control out cover detach the olp cond connector from the PBA Yes Measure resistance on both ends of olp pin using...

Page 72: ...GRN RED when E416 1 Cause of malfunction 1 Abnormal refrigerant pressure 2 Problematic pipes 3 Problematic service valve 2 Check procedure 1 Inspect refrigerant pressure 2 Inspect Indoor unit and Outd...

Page 73: ...euver error Prohibiting cooling maneuver error Outdoor unit display YEL GRN RED 1 Cause of malfunction 1 Problematic temperature sensor 2 Faulty sensor itself 2 Check procedure 1 Check connection cond...

Page 74: ...the cause of damage 2 Check procedure No No No Remove foreign substances Replace fan motor Reconnect connector or check for disconnection Yes Yes Pull out power cords for the indoor unit and the outdo...

Page 75: ...Problematic Outdoor unit PBA 4 Faulty compressor itself 2 Check procedure Pull out power cords for the Indoor unit and the Outdoor unit No End No Check condition of outdoor unit power connection No Re...

Page 76: ...sensor error Problematic radiator temperature sensor error AC overvoltage protection error Problematic external controller incoming current sensor error Outdoor unit display YEL GRN RED when E462 YEL...

Page 77: ...ndition Yes Yes Yes Yes Pull out power cords for the indoor unit and the outdoor unit Replace outdoor unit PBA A new EEPROM ic must be inserted Is the connection condition of the wires to the outdoor...

Page 78: ...be loaded according to each code and released as service material The servicing professional will insert the EEPROM ic on location If an ic has already been inserted a replacement will suffice If the...

Page 79: ...k item E458 Yes Yes Pull out power cords for the indoor unit And the outdoor unit Replace ass y control out A new EEPROM ic must be inserted Is the ipm pfcm screw Connection condition satisfactory Is...

Page 80: ...gerant leakage error Indoor unit display Outdoor unit display YEL GRN RED 1 Cause of malfunction 1 Faulty tightness of service valve 2 Faulty pipe 2 Check procedure 1 Check tightness of service valve...

Page 81: ...or unit terminal block to the outdoor unit PBA point of contact disconnection No Is the voltage of n l of the outdoor unit PBA ac187v 253v Are the voltages on both ends of bd101 between ac187v ac253v...

Page 82: ...light Yes Check if batteries have run out No No No After turning off the main power switch Breaker or power outlet wait 10 seconds before turning the power on After verifying the remote controller Ba...

Page 83: ...ause of malfunction 1 Faulty connection or disconnection of Panel touch wire 2 Faulty touch itself 2 Check procedure No Reconnect wire Yes Start Is the connection condition of the Panel board wire num...

Page 84: ...Samsung Electronics 5 1 5 PCB Diagram 5 1 PCB Diagram 5 1 1 Ass y PCB Main IN 4 5 6 7 16 15 8 1 2 3 14 13 12 11 9 10...

Page 85: ...2 GND 3 PANEL Transmission signal 4 PANEL Reception signal 5 NULL 6 DC 5V 1 DC 12V 2 MOTOR Operation signal 3 MOTOR Operation signal 4 MOTOR Operation signal 5 MOTOROperation signal 1 SPI Control sig...

Page 86: ...MOTOR Operation signal 9 MOTOR Operation signal 10 MOTOR Operation signal 1 RXD_485 2 TXD_485 3 nTRST 4 TDO 5 TCK 6 TDI 7 TMS 8 TRACE_CLK 9 GND 10 VCC 11 VCC 12 MD0 13 RESET 14 TRACE_3 15 F_SCLK 16 F_...

Page 87: ...B DISPLAY 1 TEST 2 VCC 3 GND 4 RESET 5 P4 1 6 P4 0 1 CAMERA_RX 2 CAMERA_TX 3 DC 12V 4 GND 5 NC CN103 Control PBA Connection 1 DC 12V 2 GND 3 VCC 4 DISP_RX 5 DISP_TX 6 GBL_RST 7 CAMERA_RX 8 CAMERA_TX C...

Page 88: ...nics 5 5 5 1 4 ASS Y PCB POWER 1 AC Power 2 NC 3 AC Power 4 NC 5 GND 1 DC 12V 2 GND 3 DC 5V 4 NC 5 GND 6 BLDC PS 7 GND 8 NC 1 DC 310V 2 NC 3 GND 4 DC 15V 5 BLDC_OVP CN100 AC Power CN200 MAIN PBA Conne...

Page 89: ...6 Samsung Electronics 5 1 5 ASS Y PCB SUB TOUCH 1 VCC 2 GND 3 Downloading 4 Downloading 5 Downloading 1 VCC 2 TOUCH Transmission signal 3 TOUCH Reception signal 4 GND CN02 Downloading CN01 CONTROL PBA...

Page 90: ...PCB Diagram Samsung Electronics 5 7 5 1 6 ASS Y PCB SUB LIGHT 1 12V 2 Lighting Control signal CN01 Lighting 1...

Page 91: ...USB D Bluetooth Control 5 USB D Bluetooth Control 6 5V 7 NC 8 NC 1 MCU RXD UART Transmission 2 MCU TXD UART Reception 3 12V 4 GND 5 NC 1 GND 2 USB D Wireless LAN Control 3 USB D Wireless LAN Control 4...

Page 92: ...PCB Diagram Samsung Electronics 5 9 5 1 9 ASS YPCBMAINOUT 8 15 16 17 18 1 2 3 4 5 6 7 9 14 10 13 11 12...

Page 93: ...V 1 DC5V 2 RAC DETECT Signal 3 GND 1 7 7GEG Control Signal 8 KEY 1 Signal 9 KEY 2 Signal 10 KEY 3 Signal 1 KEY Input Signal 2 4 GRID Control Signal RED V phase BLU U phase YEL W phase REACTOR1 REACTOR...

Page 94: ...MEMO Samsung Electronics 5 11 Samsung Electronics...

Page 95: ...6 1 Samsung Electronics Wiring Diagram Samsung Electronics 6 2 This Document can not be used without Samsung s authorization 6 Wiring Diagram 6 1 All Model Except KFR 50LW EMA1...

Page 96: ...6 3 Samsung Electronics Wiring Diagram Samsung Electronics 6 4 6 2 Only KFR 50LW EMA1 Model This Document can not be used without Samsung s authorization...

Page 97: ...Disp 18 18K BTU H 24 24K BTU H 27 27K BTU H 28 28K BTU H TYPE R RAC F FAC PERFORMANCE 1 S INVERTER H P V INVERTER C O P STANDARD H P C STANDARD C O CAPACITY 2 S Smart Sensor Zero Filter Virus Doctor...

Page 98: ...7 3 Samsung Electronics 7 2 Refrigerating Cycle Diagram 2 1 F T Condenser Outdoor unit Air flow 4Way valve Sensor EEV Compressor indoor unit heat exchanger ServiceValve ServiceValve...

Page 99: ...7 8 7 9 8 0 8 0 8 1 8 1 8 2 8 3 8 3 8 4 8 4 8 5 8 5 8 6 8 6 8 6 8 7 8 7 8 8 25 7 7 7 8 7 9 8 0 8 0 8 1 8 2 8 2 8 3 8 4 8 4 8 5 8 5 8 6 8 6 8 7 8 7 8 8 8 8 8 9 8 9 9 0 26 7 8 7 9 8 0 8 1 8 1 8 2 8 3 8...

Page 100: ...0 2 0 4 0 6 0 8 1 0 0 20 40 60 80 100 Resistance Comp Temperatures C UG8T265FXAEW UG8T265FUAEW BLDC Compressor Comp Temp UG8T265FXAEW UG8T265FUAEW 20 0 39 0 37 30 0 40 0 38 40 0 42 0 4 50 0 43 0 41 60...

Page 101: ...le International and or domestic law Samsung Electronics Co Ltd September 2017 Printed in Korea Code No AC 00011E_3 GSPN Global Service Partner Network Area Web Site Eurpoe CIS Mideast Africa gspn1 sa...

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