Samsung SC07AS2 User manual

INDOOR UNIT
SC07AS2
SC07AS2A
SC09AS2
SC12AS4
OUTDOOR UNIT
SC07AS2X
SC07AS2AX
SC09AS2X
SC12AS4X
SERVICE Manual
CONTENTSAIR CONDITIONER
11. Product Specifications
12. Operating Instructions
13. Disassembly and Reassembly
14. Refrigerating Cycle Diagram
15. Set Up the Model Option
16. Troubleshooting
17. Exploded Views and Parts List
18. Block Diagram
19. PCB Diagram
10. Wiring Diagram
11. Schematic Diagram
ROOM AIR CONDITIONER
DB98_16999A(2)_co 04/3/12 10:22 AM Page 3

1Samsung Electronics
1. Product Specifications
1-1 Table
Model
Item
SC07AS2 SC07AS2A
Type
Cooling kW
Dehumidifying |/h
Air Volume m3/min
Noise dB
Energy Efficiency Ratio W/W
Power V-Hz
Power Consumption W
Operating Current A
Power Factor %
Starting Current A
Length m
Power Cord Number of Core Wire
Capacity A
Outer W x H x D mm
Dimension inch
Weight kg
Refrigerant Pipe Liquid mm x L(m)
GAS mm x L(m)
Drain Hose D x L(mm)
Type
Compressor Motor Type
Rated Output
Type
Blower Motor Type
Rated Output W
Heat Exchanger
Refrigerant Control Unit
Freezer Oil Capacity cc
Refrigerant to Change(R410A) g
Protection Device(OLP)
Cooling Test Condition
Maximum Operation Condition
Indoor unit Outdoor unit
Wall-mounted
2.30
0.9
6.2 22
36 50
2.95
1-220 / 240-50
780
3.5
96.9
17.0
-
-
250V-10 / 16A
795 x 258 x 179 660 x 495 x 235
31.3 x 10.2 x 7.0 26.0 x 19.5 x 9.3
7.5 25.6
ø6.35 x 7.5
ø9.52 x 7.5
ø18 x 2,000
Rotary
--
--
Cross-flow Propeller
steel steel
11 20
2ROW 10STEP 1ROW 22STEP
CAPILLARY TUBE
350
550
MRA99901-9201
Size
Power
Perfor-
mance
Indoor unit Outdoor unit
Wall-mounted
2.30
0.9
6.2 22
36 50
2.95
1-220 / 240-50
780
3.5
96.9
17.0
-
-
250V-10 / 16A
795 x 258 x 179 660 x 495 x 235
31.3 x 10.2 x 7.0 26.0 x 19.5 x 9.3
7.5 25.6
ø6.35 x 7.5
ø9.52 x 7.5
ø18 x 2,000
Rotary
--
--
Cross-flow Propeller
steel steel
11 20
2ROW 10STEP 1ROW 22STEP
CAPILLARY TUBE
280
600
RAC12126-9622
INDOOR UNIT : DB27˚C WB19˚C OUTDOOR UNIT : DB35˚C WB24˚C
INDOOR UNIT : DB32˚C WB23˚C OUTDOOR UNIT : DB43˚C WB26˚C
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Samsung Electronics2
Table(cont.)
Model
Item
SC09AS2 SC12AS4
Type
Cooling kW
Dehumidifying |/h
Air Volume m3/min
Noise dB
Energy Efficiency Ratio W/W
Power V-Hz
Power Consumption W
Operating Current A
Power Factor %
Starting Current A
Length m
Power Cord Number of Core Wire
Capacity A
Outer W x H x D mm
Dimension inch
Weight kg
Refrigerant Pipe Liquid mm x L(m)
GAS mm x L(m)
Drain Hose D x L(mm)
Type
Compressor Motor Type
Rated Output
Type
Blower Motor Type
Rated Output W
Heat Exchanger
Refrigerant Control Unit
Freezer Oil Capacity cc
Refrigerant to Change(R410A) g
Protection Device(OLP)
Cooling Test Condition
Maximum Operation Condition
Indoor unit Outdoor unit
Wall-mounted
2.70
1.4
6.8 22
39 51
2.87
1-220 / 240-50
940
4.2
97.3
21.0
-
-
250V-10 / 16A
795 x 258 x 179 660 x 495 x 235
31.3 x 10.2 x 7.0 26.0 x 19.5 x 9.3
7.5 26.3
ø6.35 x 7.5
ø9.52 x 7.5
ø18 x 2,000
Rotary
--
--
Cross-flow Propeller
steel steel
11 20
2ROW 10STEP 1ROW 22STEP
CAPILLARY TUBE
280
500
RBC12131-12500
Size
Power
Perfor-
mance
Indoor unit Outdoor unit
Wall-mounted
3.50
1.9
8.2 24
43 53
2.82
1-220 / 240-50
1,240
5.4
99.8
32.0
-
-
250V-10 / 16A
890 x 285 x 179 720 x 530 x 260
35.0 x 11.2 x 7.0 28.3 x 20.9 x 10.2
8.5 33.0
ø6.35 x 7.5
ø12.7 x 7.5
ø18 x 2,000
Rotary
--
--
Cross-flow Propeller
steel steel
15 25
2ROW 12STEP 1ROW 24STEP
CAPILLARY TUBE
500
730
RBC12128-12500
INDOOR UNIT : DB27˚C WB19˚C OUTDOOR UNIT : DB35˚C WB24˚C
INDOOR UNIT : DB32˚C WB23˚C OUTDOOR UNIT : DB43˚C WB26˚C
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3Samsung Electronics
1-2 Pressure Graph
■SC07AS2
■SC07AS2A
■SC09AS2
■SC12AS4
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Samsung Electronics4
2. Operating Instructions
2-1 The Feature of Key in remote control
FUNCTION OF KEYNAMED OF KEYNo
1
2
3
4
5
6
7
8
9Energy Saving button.
If you wish to save energy when using your air conditioner, select the Energy saving mode
with the button.
Fan speed adjustment button.
Each time you press this button,
FAN SPEED is changed in the following order.
Turbo/Sleep mode selection button.
Press the button one or more times until appears. The sleep timer can be used
when you are cooling or heating your room to switch the air conditioner off
automatically after a period of six hours.
Temperature adjustment button(DOWN).
To decrease the temperature by the pressing the temperature button.
(DOWN)
On/Off & Timer Set/Cancel button.
Press the button to stop and run the air conditioner or On/Off timer set up.
Turbo/Sleep mode selection button.
Press the button one or more times until appears. The air conditioner cools or
heats the room as quickly as possible. After 30minutes, the air conditioner is reset automatically
to the previous mode.
(UP)
Swing button.
It adjusts the airflow to upward and downward.
Mode selection button.
Each time you press this button,
Mode is changed in the following order.
: Auto Mode : Dry Mode
: Cool Mode : Fan Only
Temperature adjustment button(UP).
To increase the temperature by the pressing the temperature button.
On Timer button.
The On Timer enables you to switch on the air conditioner automatically
after a given period of time that is from 30 minutes to 24 hours.
To cancel, press the (Set/Cancel) button.
Off Timer button.
The Off Timer enables you to switch off the air conditioner automatically
after a given period of time that is from 30 minutes to 24 hours.
To cancel, press the (Set/Cancel) button.
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5Samsung Electronics
Operating Instructions
1. AUTO MODE : In this mode, operation mode(COOL) is
selected automatically by the room temperature of initial
operation.
∆T= -1°C, -2°C, 0°C, +1°C, +2°C
∆T is controlled by setting temperature
up/down key of remote control
2. COOL MODE : The unit operates according to the differ-
ence between the setting and room temperature.
(18°C~30°C)
3. DRY MODE : Has 3 states, each determined by 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)
4. TURBO MODE : This mode is available in AUTO, COOL,
DRY, FAN MODE.
When this button is pressed at first, the air conditioner is
operated ''powerful'' state for 30 minutes regardless of the
set temperature, 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.
*But, if you press the TURBO button in DRY or FAN
mode that is changed with AUTO mode automatically.
5. SLEEP MODE : Sleep mode is available only in COOL
mode.
The operation will stop after 6 hours.
*In COOL mode : The setting temperature is automatical-
ly raised by 1°C each 1hour. When the temperature has
been raised by total of 2°C, that temperature is main-
tained.
6. FAN SPEED : Manual(3 step), Auto(4 step)
Fan speed automatically varies depending on both the
difference between setting and the room temperature.
7. COMPULSORY OPERATION : For operating the air
conditioner without the remote control.
*The operating is the same function that AUTO MODE in
the remote control.
8. SWING : BLADE-H is rotated vertically by the stepping
motor.
*Swing Set : Press the button under the remote
control is displayed on LCD the and the blades
move up and down. If the one more time press the
button, blades location is stop.
9. SETTING THE ON/OFF TIMER. :
*ON TIMER : The On Timer enables you to switch on the
air conditioner automatically after a given period of time.
You can set the period of time from 30 minutes to 24
hours.
*OFF TIMER : The Off Timer enables you to switch off
the air conditioner automatically after a given period of
time. You can set the period of time from 30 minutes to
24 hours.
10. SELF DIAGNOSIS
11. BUZZER SOUND : Whenever the On/Off button is
pressed or whenever change occurs to the condition
which is set up or select, the compulsory operation mode,
buzzer is sounded "beep".
2-1-1 Name & Function of Key in remote control
Operation Type
Cool Operation
Room Temp
Tr≥25°C+∆T Compressor ON
Tr≥24°C+∆T Compressor OFF
: Lamp flickering
: Lamp off
Indoor unit room temperature sensor
error(open or short)
Description
LAMP or DISPLAY Monitor
TIMER TURBO OPERATION
Indoor unit heat exchanger
temperature sensor error(open or short)
Indoor fan motor malfunction
EEPROM error
Option error(option wasn’t set up or
option data error)
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Samsung Electronics6
2-2 Replace PCB Model option
2-2-1 Replace PCB model option
No
Yes
Remove power cord
Replace the PCB module
Check the connection and plug in
Refer to set up the Model option(13~15page)
Replace another PCB
Does all display lamp blink?
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7Samsung Electronics
3. Disassembly and Reassembly
3-1 Indoor Unit
Stop operation of the air conditioner and remove the power cord before repairing the unit.
No Parts Procedure Remark
1 Front Panel 1) Stop the air conditioner operation and
block the main power.
2) Detach tape of the Front Panel upper.
3) Open the upper Front Grille by pulling
right and left sides of the Grille.
4) Slide the lower Front Grille down, then
disassemble it by pulling it forwards.
5) Take the left and right Filter out.
6) Loosen one of the right screw and
detach the Terminal Cover.
7) Detach the thermistor from the Front Grille.
8) Loosen 5 fixing screws of Front Grille.
9) At first, press the left and center hook of
the back side of the Panel Grille with the
thumb to remove the hook. And press the
right of the upper side of the Panel Grille
with the fingers. And then disassemble the
Panel Grille.
10
) Pull the lower left and right of discharge
softly for the outside cover to be pulled
out.
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Samsung Electronics8
Disassembly and Reassembly
No Parts Procedure Remark
2
3
4
Electrical Parts
(Main PCB)
Tray Drain
Heat Exchanger
1) Take all the connector of PCB upper side
out.(Including Power Cord)
2) Detach the outdoor unit connection wire
from the Terminal Block.
3) If pulling the main PCB up, it will be taken
out.
1) Pull Tray Drain out from the Back Body.
1) Loosen 2 fixing earth screws of right side.
2) Detach the Connection Pipe.
3) Detach the Holder Pipe at the rear side.
4) Loosen 3 fixing screws of right and left
side.
5) Detach the Heat Exchanger from the
indoor unit.
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9Samsung Electronics
Disassembly and Reassembly
No Parts Procedure Remark
5 Fan Motor
&
Cross Fan
1) Loosen 2 fixing screws and detach the
Motor Holder.
2) Loosen 1 screw of Fan Motor.
(By use of M3 wrench)
3) Detach the Fan Motor from the Fan.
4) Detach the Fan from the left Holder
Bearing.
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