Samsung MC18AC2-09 User manual

ROOM AIR CONDITIONER
SERVICE Manual
INDOOR UNIT
MC18AC2-09
MC19AC2-07
MC19AC2-12
OUTDOOR UNIT
MC18AC2X
MC19AC2X
CONTENTSAIR CONDITIONER
1. Precautions
2. Product Specifications
3. Operating Instructions 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
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1-1Samsung Electronics
1. Warning: Prior to repair, disconnect the
power cord from the circuit breaker.
2. Use proper parts: Use only exact replace-
ment parts. (Also, we recommend replacing
parts rather than repairing them.)
3. Use the proper tools: Use the proper tools
and test equipment, and know how to use
them. Using defective tools or test equip-
ment may cause problems later-intermittent
contact, for example.
4. Power Cord: Prior to repair, check the
power cord and replace it if necessary.
5. Avoid using an extension cord, and avoid
tapping 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, mea-
sure the resistance between the power cord
and the ground terminal. The resistance
must be greater than 30 megaohms.
7. Make sure that the grounds are adequate.
8. Make sure that the installation conditions
are satisfactory.
Relocate the unit if necessary.
9. Keep children away from the unit while it is
being repaired.
10. Be sure to clean the unit and its surround-
ing area.
1. Precautions
Fig. 1-1 Avoid Dangerous Contact
Fig. 1-2 No Tapping and No Extension Cords
Fig. 1-3 No Kids Nearby!
O.K
Fig. 1-4 Clean the Unit
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Samsung Electronics1-2
MEMO
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2-1Samsung Electronics
2. Product Specifications
2-1 Table
Model
Item
Type KW
Cooling BTU/h
Kcal/h
Dehumiditying \/h
Air volume m3/min
Noise dB
Power ø-V-Hz
Power Consumption W
Operating Current W
Starting current A
Power cord (Option)
Connection cable (Option)
Fuse capacity A
Outer W x H x D mm
Dimension inch
Weight kg
Refrigerant pipe Liquid OD(mm) x L(m)
Gas OD(mm) x L(m)
Drain hose OD(mm)x L(m)
Type
Model name
Compressor Capacitor
Motor Type
Rated output W
Type
Blower Motor Type
Rated output W
Heat exchange
Refrigerant control unit
Freezer oil capacity cc
Refrigerant to charge (R410A)
Protection device
Cooling test condition
Maximum operation Condition
MC18AC2
Indoor unit Outdoor unit
MC18AC2-09 MC18AC2X
2.65 5.3
9042 18084
2279 4558
1.2 -
6.7 -
40 55
940 1880
4.2 8.4
25
2.5 x 3core
1.0 x 4core
3.15 -
790x245x165 880x638x310
31.1 x 9.64 x 6.50 34.65 x 25.1 x 12.2
7.7 60
ø6.35 x 5 -
ø9.52 x 5 -
ø18.0 x 2 -
- Rotary
-
A : G4A097JU1EP
B : G4A097JU1EP
-
A : 35µF 450VAC
B : 35µF 450VAC
-
- A : 925, B : 925
Resin Steel
Cross-flow Propeller
22 30
2Row 12Step 2Row 24Step
-A : 280
280500
A-Unit : 650g, B-Unit : 650g
-
A : RAC12131-9622
B : RAC12131-9622
MC19AC2
Indoor unit Indoor unit Outdoor unit
MC19AC2-07 MC19AC2-12 MC19AC2X
2.05 3.5 5.55
6995 11942 18937
1763 3009 4772
0.9 1.5 -
68-
39 42 55
1-220-240V~, 50Hz
830 1170 2000
3.7 5.1 8.8
30
2.5 x 3core
1.0 x 4core
3.15 3.15 -
790 x 245 x 165 790 x 245 x 165 880 x 638 x 310
31.1 x 9.64 x 6.50 31.1 x 9.64 x 6.50 34.65 x 25.1 x 12.2
7.7 7.7 60
ø6.35 x 5 ø6.35 x 5 -
ø9.52 x 5 ø9.52 x 5 -
ø18.0 x 2 ø18.0 x 2 -
- - Rotary
--
A : G4A080JU1EP
B : G8C124JU1EL
--
A : 35µF 450VAC
B : 35µF 450VAC
--
- - A : 820, B : 1060
Resin Resin Steel
Cross-flow Cross-flow Propeller
22 22 30
2Row 12Step 2Row 12Step 2Row 24Step
A/B-Unit:Capillary tube
--
A : 280
B : 500
A-Unit : 500g, B-Unit : 970g
--
A : RAC12126-9622
B : RAC12128-9622
Perfor-
mance
Power
Size
Indoor unit : DB27˚C WB19˚C Outdoor unit : DB35˚C DB24˚C
Indoor unit : DB32˚C WB23˚C Outdoor unit : DB43˚C DB26˚C
Wall-Mounting Multi Split
DB98-06187A(1)-1 6/4/02 6:17 PM Page 2-1

2-2 Dimensions
2-2-1 Indoor Unit
Samsung Electronics2-2
245
165
790
Air
in
(Front view)
(Remote control)
Air out
Installation plate
2245
115
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Product Specifications
2-3Samsung Electronics
2-2-2 Outdoor Unit
(Front view) (Rear view)
660
880 340
638
310
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Samsung Electronics2-4
2-3 Pressure Graph
11
10
9
8
7
20 30
Outdoor drybulb temperature [deg C]
Low Pressure [kg/cm2G]
40
30.6/22.5
27/19
21.5/14.6
■MC19AC2-07
■
10
9
8
7
3
20 30
Outdoor drybulb temperature [deg C]
Low Pressure [kg/cm2G]
40
30.6/22.5
27/19
21.5/14.6
■MC18AC2-09
■
10
9
8
7
6
20 30
Outdoor drybulb temperature [deg C]
Low Pressure [kg/cm2G]
40
30.6/22.5
27/19
21.5/14.6
■MC19AC2-12
■
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3-1Samsung Electronics
3. Operating Instructions and Installation
3-1 Operating Instructions
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 & Function of Key in remote controller
: Auto Mode : Dry Mode
: Cool Mode : Fan Only
(DOWN)
Power On/Off button to start and stop airconditioner or timer set up
NAMED OF KEY
(UP)
NO
1
2
3
4
5
6
7
8
9
Adjust air flow vertically.
Press until the appearance. the sleep timer can be used when
you are cooling your room to switch the air conditioner off
automatically after a period of six hours.
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 the Off Time, press the (Set/Cancel) 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 the On Time, press the (Set/Cancel) button.
To select the 5 way function with the remote control, press the 5 way
button one or more times until the desired mode is selected.
Each time you press the 5 way button
Each 5 way indicator on the indoor unit comes on in order.
Each time you press this button,
FAN SPEED is changed in the following order.
Press until the appearance. the air condition cools
the room as quickly as possible. after 30minutes, the air,
the airconditioner is reset automatically to the previous mode
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Operating Instructions and Installation
Samsung Electronics3-2
1. AUTO MODE : In this mode, operation
COOL mode 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 controller
* FAN SPEED : AUTO
2. COOL MODE : The unit operates according
to the difference 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 tempera-
ture, 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 pressed 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.
*The setting temperature is automatically
raised by 1°C each 1hour When the
temperature has been raised by total of
2°C, that temperature is maintained.
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 controller.
*AUTO : The operating is the same func-
tion that AUTO MODE in the remote con-
troller. And each time you press the button
the 5WAY function is changed as follow.
STD ➝ NATURE ➝ POWER ➝ SAVING ➝
SILENCE ➝ POWER OFF
❊ STD(standard)( ) : General operation
Mode
❊ NATURE( ) : The unit is operated
according to health
pattern control
❊ POWER( ) : The unit is operated in
powerful state
❊ SAVING( ) : The unit is operated in
power saving state
❊ SILENCE( ) : The unit is operated
quitely
Each mode has Auto, Cool and SLEEP oper-
ation designed in advance.
Operation Type
Cool Operation
Room Temp
Tr≥25°C+∆T
Tr<24°C+∆T
Compressor ON
Compressor OFF
3-1-2 Name & Function of Key in remote controller
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Operating Instructions and Installation
3-3Samsung Electronics
8. SWING : BLADE-H is rotated vertically by
the stepping motor.
*Memory louver : When ON/OFF button is
pressed at stop state, the BLADE-H returns
to its original location which is operating
state before stop
*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 loca-
tion is stop.
9. 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.
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".
Indoor unit room temperature sensor
error(open or short)
Check Point
LED DISPLAY
TIMER
NATURE STD
POWER SAVING SILENCE
LED
:blinking : LED off
Indoor unit heat exchanger temperature
sensor error(open or short)
Indoor fan mal function
EEPROM error
Option error(option wasn’t set up or
option data error)
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