Samsung MC26AC2-07 User manual

SERVICE Manual
ROOM AIR CONDITIONER
INDOOR UNIT
MC26AC2-07
MC26AC2-12
OUTDOOR UNIT
MC26AC2X
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 replacement
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 equipment 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, measure
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 surrounding
area.
1. Precautions
Fig. 1-1 Avoid Dangerous Contact
Fig. 1-2 No Tapping and No Extension Cords
Fig. 1-3 No Kids Nearby!
Fig. 1-4 Clean the Unit
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MEMO
Samsung Electronics1-2
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2-1Samsung Electronics
2. Product Specifications
2-1 Table
kW
Cooling BTU/h
Kcal/h
Dehumidifying \/h
Air volume m
3
/min
Noise dB
Power ø-V-Hz
Power Consumption W
Operating Current A
Starting Current A
Power Cord (Option)
Connection Cable (Option)
Fuse Capacity A
Outer mm
Dimension W x H x D inch
Weight kg
Refrigerant pipe Liquid
OD(mm)xL(m)
Gas
OD(mm)xL(m)
Drain hose
OD(mm)xL(m)
Type
Model name
Compressor Capacitor
Motor Type
Rated output W
Type
Blower Motor Type
Rated output W
Heat exchanger
Refrigerant control unit
Freezer oil capacity cc
Refrigerant to charge(R410A)
Protection device
Cooling test condition
Maximum operation condition
Model
Item
INDOOR UNIT
MC26AC2-07
INDOOR UNIT
MC26AC2-12
OUTDOOR UNIT
MC26AC2X
MC26AC2
Power
Size
Perfor-
mance
Type
2.05 x 2
6,995 x 2
1,763x2
0.9
6
39
1,250
5.5
3.15
790 x 245 x 165
31.1 x 9.64 x 6.50
7.7
ø6.35 x 5
ø9.52 x 5
ø18.0 x 2
-
-
-
-
-
Resin
Cross-flow
22
2Row 12Step
-
-
3.5
11,942
3,009
1.5
8
42
1,210
5.4
3.15
790 x 245 x 165
31.1 x 9.64 x 6.50
7.7
ø6.35 x 5
ø9.52 x 5
ø18.0 x 2
-
-
-
-
-
Resin
Cross-flow
22
2Row 12Step
-
-
7.6
25,932
6,535
-
-
60
2,460
10.9
-
880 x 638 x 310
34.65 x 25.1 x 12.2
60
-
-
-
Rotary
A : G8C124JU1EL
B : G8C124JU1EL
A : 35µF 450VAC
B : 35µF 450VAC
A : 1,060, B : 1,060
Steel
Propeller
74
2Row 36Step
A : 500
B : 500
A : RAC12128-9622
B : RAC12128-9622
Wall-Mounting Multi Split
1-220-240V~, 50Hz
30
2.5 x 3core
1.0 x 4core
A/B-Unit : Capillary tube
A-Unit : 920g, B-Unit : 970g
Indoor unit : DB27˚C WB19˚C Outdoor unit : DB35˚C WB24˚C
Indoor unit : DB32˚C WB23˚C Outdoor unit : DB43˚C WB26˚C
DB98_11868A(1)_1 3/3/03 11:17 AM Page 2-1

245
165
790
Air
in
(Front view)
(Remote control)
Air out
Installation plate
2245
115
Samsung Electronics2-2
2-2 Dimensions
2-2-1 Indoor Unit
(Unit : mm)
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2-3Samsung Electronics
Product Specifications
2-2-2 Outdoor Unit
(Unit : mm)
(Front view) (Rear view)
660
1000 340
796
310
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10
9
8
7
620 30
Outdoor drybulb temperature [deg C]
Low Pressure [kg/cm2G]
40
30.6/22.5
27/19
21.5/14.6
11
10
9
8
720 30
Outdoor drybulb temperature [deg C]
Low Pressure [kg/cm2G]
40
30.6/22.5
27/19
21.5/14.6
Samsung Electronics2-4
2-3 Pressure Graph
■MC26AC2-07
■
■MC26AC2-12
■
DB98_11868A(1)_1 3/3/03 11:17 AM Page 2-4

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 The Feature 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
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 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
function that AUTO MODE in the remote
controller. And each time you press the
button the 5WAY function is changed as
follow. STD ➝ NATURE ➝ POWER ➝
SAVING ➝ SILENCE ➝ POWER OFF
❊ STD(standard)( ) : General opera-
tion 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
quietly
Each mode has Auto, Cool and SLEEP
operation 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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3-3Samsung Electronics
Operating Instructions and Installation
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
location 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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