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Samsung AQ30C2BC Service Manual

Indoor/outdoor unit
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See also: Installation Instructions & Owner's Manual
SERVICE
AIR CONDITIONER
E DB98-05109A(1)

ROOM AIR CONDITIONER

INDOOR UNIT
AQ30C2BC
Manual
Index
OUTDOOR UNIT
UQ30C2BC
CONTENTS

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Summary of Contents for Samsung AQ30C2BC

  • Page 1: Table Of Contents

    Index ROOM AIR CONDITIONER INDOOR UNIT OUTDOOR UNIT AQ30C2BC UQ30C2BC SERVICE Manual AIR CONDITIONER CONTENTS 1. Installation 2. Disassembly and Reassembly 3. Troubleshooting 4. Exploded Views and Parts List 5. Refrigerating Cycle Block Diagrams 6. Wiring Diagrams 7. Schematic Diagrams...

  • Page 2: Installation

    Index 1. Installation 1-1 Refrigerant Refill Procedure • Refill an air-conditioner with refrigerant when refrigerant has been leaked at installing or using 1. Purge air(for new installation only). 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.
  • Page 3 Index 1-2 "Pump down" Procedure Pump down shall be carried out when an evaporator is replaced or when the unit is relocated in another area. 1. Remove the caps from the 2-way valve and the 3-way valve. 2. Turn the 3-way valve clockwise to close and connect a pressure gauge(low pressure side) to the service valve, and open the 3-way valve again.

  • Page 4: Disassembly And Reassembly

    Index 2. Disassembly and Reassembly Stop operation of the air conditioner and remove the power cord before repairing the unit. Parts Procedure Remark Front Grille 1) Stop the air conditioner operation and block the main power. 2) Seperate tape of front panel upper. 3) Contract the second finger to the left, and right handle and pull to open the inlet grille.
  • Page 5 Index Parts Procedure Remark Ass’y Tray Drain. 1) Do “1”, above. Separate the drain hose from the extension drain hose. 2) Take the display PCB out. (Right of indoor unit) 3) Pull tray drain out from the back body. Electrical Parts 1) Do “1”, “2”, above.
  • Page 6 Index Parts Procedure Remark Fan Motor and 1) Do “1” “2” ”3” “4”, above. Cross Fan 2) Loosen the fixing five screws and separate the holder motor. 3) Loosen the fixing screw of fan motor. 4) Separate the fan motor from the right fan.(A) 5) Loosen the fixing screw of the left fan.(B) 6) Seperate the both fan from the back body.
  • Page 7 Index 2-2 Outdoor Unit Parts Procedure Remark COVER TOP 1) Loosen the screws on the cover top, and remove the cover top. BACK CABI 1) Loosen the screws on the side cabinet, and remove the side cabinet. CONTROL BOX 1) Loosen the screw on the control box, and remove the control box.

  • Page 8: Troubleshooting

    Index 3. Troubleshooting 3-1 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 7 cables.

  • Page 9: Fault Diagnosis By Symptom

    Index 3-2 Fault Diagnosis by Symptom 3-2-1 No Power(completely dead)-Initial diagnosis 1) Checklist : (1) Is input voltage normal? (the rating voltage ±10% range) (2) Is AC power linked correctly? (3) Is input voltage of DC regulator IC KA7805 (IC02) normal? (11.5VDC-12.5VDC) (4) Is output voltage of DC regulator IC KA7805 (IC02) normal? (4.5VDC-5.5VDC) 2) Troubleshooting procedure Remove power cord and plug in again...
  • Page 10 Index 3-2-2 When the Indoor Unit Fan Does Not Operate. (Initial Diagnosis) 1) Checklist : (1) Is the indoor unit fan motor properly connected with the connector (CN73)? (2) Is the AC voltage correct? (3) Is HALL IC in indoor fan motor properly connected with the connector (CN43)? (4) Is the running capacitor properly connected with the solder part of the PCB? 2) Troubleshooting procedure After unplugging out the power cord should...
  • Page 11 Index 3-2-3 When the Outdoor Unit Does Not Operate. (Initial Diagnosis) 1) Checklist : (1) Is input voltage normal? (the rating voltage ±10% range) (2) Is the set temperature of the remote control higher than room temperature in COOL mode? (3) Is the set temperature of the remote control lower than room temperature in HEAT mode? (4) Is the POWER IN connector (CN78) linked correctly? (5) Is the outdoor unit properly connected with the TERMINAL BLOCK connector(8P)?
  • Page 12 Index 3-2-4 When the UP/DOWN Louver Motor Does Not Operate. (Initial Diagnosis) 1) Checklist : (1) Is input voltage normal? (the rating voltage ±10% range) (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.
  • Page 13 Index 3-2-6 If Operation By Remote Control Unit Is Impossible. (Initial Diagnosis) 1) Troubleshooting procedure Remove power cord and plug in again approx. 5 Seconds Is operation lamp blinking? Check as in the procedure “NO Power parts”. Refer to page 8. “...
  • Page 14 Index 3-3 Replace PCB module 3-3-1 Replace PCB module Remove power cord Replace the PCB module Check the connection and plug in Replace another PCB module Does al display lamp blink or STD lamp blink? Refer to set up the Model option...

  • Page 15: Exploded Views And Parts List

    Index 4. Exploded Views and Parts List 4-1 Indoor Unit...
  • Page 16 Index Parts List Q’TY Description Specification Remark CODE NO AQ30C2BC DB92-00206D ASSY-PANEL DB64-00339A GRILLE AIR INLET DB63-00268A GUARD-AIR FILTER DB63-00290A FILTER-CLEANER ASSY ASSY DB61-00035A CASE CLEANER-FILTER DB63-00285A FILTER-CARBON 405 x 82 DB63-00286A FILTER-CLEANER 405 x 82 DB63-00270A COVER-TEMINAL DB60-00017A SPACER-EVAP...
  • Page 17 Index 4-2 Outdoor Unit...
  • Page 18 Index Parts List Q’TY Description Specification Remark CODE NO UQ30C2BC DB90-00533B ASSY CABI FRONT ASSY DB63-00320A GUARD FAN MSWR DB90-20157R ASSY-BASE OUT ASSY DB67-00140A FAN-PROPELLER AS+G/F20% DB60-20020A BOLT-SPECIAL M8,L25 DB31-00103B MOTOR FAN OUT OSM-946SRC DB61-00653A BRACKET-MOTOR SGCC-M DB94-00120B ASSY PARTITION ASSY DB95-00297A ASSY COMP...
  • Page 19 Index 4-3 PCB Box Indoor Unit Parts List Description Specification CODE-No Q’TY ASSY-TERMINAL BLOCK DB65-00073C ASSY-MODULE PCB B-PJT DB93-00830A ASS’Y C/W STEP MOTOR 6P, 1007 AWG #28 DB93-00877A C/W EARTH 1P, AWG#16, 1015 DB39-00148A HOLDER-CONTROL HIPS, BLK, V0 DB61-00632B HOLDER-CLAMP IN SGCC-M DB61-00495A BRACKET-EARTH...
  • Page 20 Index Outdoor Unit...
  • Page 21 Index Parts List Q’TY Description Specification CODE NO AQ30C2BC ASSY-CONTROL OUT ASSY DB93-01143A ASSY CASE CONTROL OUT ASSY DB90-00556B MAGNETIC-SWITCH FURNAS, 30A 3501-001243 CAPACITOR AC370V / 45uF 2501-001230 BUSH-CONDENSER RUBBER DB73-30038A CLIP-CAPACITOR SBHG1-M DB69-60008A C-FLIM AC450V / 4uF 2301-001379 ASSY-SPARK KILLER...

  • Page 22: Refrigerating Cycle Block Diagrams

    Refrigerating cycle temperature and pressure STD Pressure Piping Temp(°F) Use Temp. Condition(°F) MODEL Operating Condition (psi) Indoor Outdoor 3-Way Valve Standard 57~71 46~54 46~54 Cooling Max over load Low temp AQ30C2BC Standard 270~327 90~97 140~158 Heating Max over load Low temp...

  • Page 23: Pcb Diagrams

    Index 6. PCB Diagrams 6-1 Main PCB 6-1-1 Indoor Unit (PD-SH30ZC-00/PD-SH30ZC-02)

  • Page 24: Parts List

    Index Parts List Specification Q’TY Design-Location Description C103 C-CERAMIC,DISC 2.2nF,20%,400V,Y5U,TP,12. C702 C-FILM,MPPF 100nF,10%,275V,BK,18x6x12,15 CR71 C-FILM,MPPF 2000nF,+10-5%,450V,BK,38x18x C701 C-FILM,MPEF 220NF,10%,275V,BK,26.5X8.5X1 RY71,72,73,74 RELAY-MINIATURE 12VDC,200MW,3000MA,1FORM SS71 12Vdc,-,2A,1mS,1mS IC04 IC MICOM S3C8469(SDIP) IC02 IC-VOLT REGU KA7805A,TO-220AB,1A,0/125C, TN11 TRANS 2UEW0.30/2UEW0.45,1.5KV,1KHz,-,7Pi FT71 CHOKE-COIL LSA-05230P,AC250V,2A,30.5x22x3 BZ61 BUZZER CBE2220BA,STICK,-,-,-,-,-,-,- F701 FUSE...

  • Page 25: Wiring Diagrams

    Index 7. Wiring Diagrams 7-1 Indoor Unit...
  • Page 26 Index 7-2 Outdoor Unit DIAGRAM-OUTDOOR MARK NAME MARK NAME M-S/W MAGNETIC CONTACTOR TERMINAL BLOCK HIGH-PRESSURE SWITCH FAN MOTOR CAPACITOR SPARK KILLER FUSE(2A, 250V~) SOLENOID COIL...
  • Page 27 Index MEMO...

  • Page 28: Schematic Diagrams

    Index 8. Schematic Diagrams 8-1 Indoor Unit...
  • Page 29 Index ELECTRONICS...

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