Samsung MH18AP2-09, MH19AP2-07, MH19AP2-12, MH24AP2-12, MH26AP2-07 Service Manual

MULTI AIR CONDITIONER

INDOOR UNIT

MH18AP1(P2)-09
MH19AP1(P2)-07
MH19AP1(P2)-12
MH24AP1(P2)-12
MH26AP1(P2)-07
MH26AP1(P2)-12

SERVICE

OUTDOOR UNIT

MH18AP1(P2)X
MH19AP1(P2)X

MH24AP1(P2)X
MH26AP1(P2)X

Manual

CONTENTSAIR CONDITIONER

11.Product Specifications

12.Operating Instructions &

Technical Document

13. Disassembly and Reassembly

14. Refrigerating Cycle Diagram

15. Set Up the Model Option

16. Troubleshooting

17. Exploded Views and Parts List

18. PCB Diagram

19.Wiring Diagram

10.Schematic Diagram

1. Product Specifications

1-1 Table

Item

Type

Cooling/Heating 1 Unit(A)

1 Unit(B/C)
2 Unit(A+B/C) kW

Perfor­mance

Dehumidifying(A+B/C) \ /h
Noise Cooling / Heating dB
Power ø/V/Hz

Power Consumption 1 Unit(A)
(Cooling/Heating) 1 Unit(B/C)

Power

Operating Current 1 Unit(A)
(Cooling/Heating) 1 Unit(B/C)

Starting Current(Cooling/Heating) A

Outer Dimension WxHxD

Weight kg
Refrigerant Pipe
Drain Hose ID(mm)

Size

Compressor

Blower Motor Type

Heat Exchanger

2 Unit(B+C)
3 Unit(A+B+C)

2 Unit(A+B/C) W
2 Unit(B+C)
3 Unit(A+B+C)

2 Unit(A+B/C) A
2 Unit(B+C)
3 Unit(A+B+C)

Liquid
Gas

Type
Model Name
Capacitor

Motor Type(Model)

Rated Output(A+B/C)

Type

Rated Input W

Model

mm

inch

OD(mm)xL(m)

W

MH18AP1(P2)

INDOOR UNIT OUTDOOR UNIT

MH18AP1(P2)-09 MH18AP1(P2)X

WALL-MOUNTING MULTISPLIT

2.65 / 2.78

2.65 / 2.78

5.30 / 5.56

-

-

1.1+1.1 ­39 / 39 57 / 57

1 / 220-240V~ / 50

1,020 / 980
1,020 / 980

1,940 / 1,900

-

-

4.5 / 4.4

4.5 / 4.4

8.6 / 8.4

-

-

30

795 x 258 x 179 880 x 638 x 310

31 x 10 x 7 35 x 25 x 12

7.5 59.5
ø6.35 x 7.5
ø9.52 x 7.5

ø17

- ROTARY

-

- 35 / 35

-

-

CROSS-FAN PROPELLER

RESIN STEEL

30 100

2ROW 10STEP 2ROW 28STEP

G4A097JU1EP

INDUCTION MOTOR

925+925

MH19AP1(P2)

INDOOR UNIT OUTDOOR UNIT

MH19AP1(P2)-07
MH19AP1(P2)-12

WALL-MOUNTING MULTISPLIT

1.0+1.4 -

(–07):36 / 36,

(–12):43 / 43

1 / 220-240V~ / 50

795 x 258 x 179
890 x 285 x 179

31 x 10 x 7
35 x 11 x 7

7.5 / 8.5 60

- ROTARY

-

- 30 / 35

-

-

CROSS-FAN PROPELLER

RESIN STEEL

30 100

2ROW 10STEP 2ROW 10STEP
2ROW 12STEP 2ROW 18STEP

MH19AP1(P2)X

2.05 / 2.25

3.51 / 3.60

5.56 / 5.85

-

-

57 / 57

870 / 780
1,270 / 1,420
2,100 / 2,120

-

-

3.9 / 3.5

5.7 / 6.3

9.3 / 9.4

-

-

30

880 x 638 x 310

35 x 25 x 12

ø6.35 x 7.5
ø9.52 x 7.5

ø17

G4A080JU1EP
G8C124JU1EL

INDUCTION MOTOR

820+1,060

Refrigerant Control Unit
Refrigerant to Change(R410A)

Additional Refrigerant
(Refrigerant must be added if the piping)

Protection Device
Standard Conditions

g/m

A,B-UNIT:CAPILLARY TUBE

A-UNIT:770g / B-UNIT:770g

20(A,B-UNIT) -

- RAC12131-9622

ISO R5151 STANDARD

A,B-UNIT:CAPILLARY TUBE
A-UNIT:620g / B-UNIT:1,080g

18(A-UNIT)
25(B-UNIT)

-

ISO R5151 STANDARD

RAC12126-9622
RAC12128-9622

-

1Samsung Electronics

Table(cont.)

Item

Type

Cooling/Heating 1 Unit(A)

1 Unit(B/C)
2 Unit(A+B/C) kW

Perfor­mance

Power

Dehumidifying(A+B/C) \ /h
Noise Cooling / Heating dB
Power ø/V/Hz

Power Consumption 1 Unit(A)
(Cooling/Heating) 1 Unit(B/C)

Operating Current 1 Unit(A)
(Cooling/Heating) 1 Unit(B/C)

Starting Current(Cooling/Heating) A

Outer Dimension WxHxD

Weight kg
Refrigerant Pipe
Drain Hose ID(mm)

Size

Compressor

Blower Motor Type

Heat Exchanger

Refrigerant Control Unit
Refrigerant to Change(R410A)

Additional Refrigerant
(Refrigerant must be added if the piping)

Protection Device
Standard Conditions

2 Unit(B+C)
3 Unit(A+B+C)

2 Unit(A+B/C) W
2 Unit(B+C)
3 Unit(A+B+C)

2 Unit(A+B/C) A
2 Unit(B+C)
3 Unit(A+B+C)

Liquid
Gas

Type
Model Name
Capacitor

Motor Type(Model)

Rated Output(A+B/C)

Type

Rated Input W

Model

mm

inch

OD(mm)xL(m)

W

g/m

MH24AP1(P2)

INDOOR UNIT OUTDOOR UNIT

MH24AP1(P2)-12 MH24AP1(P2)X

WALL-MOUNTING MULTISPLIT

3.51 / 3.8

3.51 / 3.8

7.02 / 7.6

-

-

1.4+1.4 ­43 / 43 60 / 60

1 / 220-240V~ / 50

1,280 / 1,280
1,280 / 1,280

2, 560 / 2, 560

-

-

5.7 / 5.7

5.7 / 5.7

11.4 / 11.4

-

-

35

890 x 285 x 179 1,000 x 790 x 310

35 x 11 x 7 39 x 31 x 12

8.5 69
ø6.35 x 7.5
ø9.52 x 7.5

ø17

-ROTARY

-

- 35 / 35

-

-

CROSS-FAN PROPELLER

RESIN STEEL

30 150

2ROW 12STEP 2ROW 36STEP

A,B-UNIT:CAPILLARY TUBE

A-UNIT:1,000g / B-UNIT:1,000g

16(A,B-UNIT) -

- RAC12128-9622

ISO R5151 STANDARD

G8C124JU1EL

INDUCTION MOTOR

1,060+1,060

MH26AP1(P2)

INDOOR UNIT OUTDOOR UNIT

MH26AP1(P2)-12
MH26AP1(P2)-07

WALL-MOUNTING MULTISPLIT

1.4+1.0 / 1.0 -

(–12):43 / 43,

(–07):36 / 36

1 / 220-240V~ / 50

890 x 285 x 179
795 x 258 x 179

35 x 11 x 7
31 x 10 x 7

8.5 / 7.5 71

-ROTARY

-

- 35 / 35

-

-

CROSS-FAN PROPELLER

RESIN STEEL

30 150

2ROW 12STEP 2ROW 16STEP
2ROW 10STEP 2ROW 20STEP

A-UNIT:CAPILLARY TUBE

B,C-UNIT:ELEC.EXPANSION V/V

A-UNIT:910g / B-UNIT:1,290g

16(A-UNIT)

21(B+C-UNIT)

-

ISO R5151 STANDARD

MH26AP1(P2)X

3.51 / 3.65

2.05 / 2.06

5.56 / 5.71

4.1 / 4.12

7.61 / 7.77

60 / 60

1,370 / 1,310
1,590 / 1,720
2,780 / 2,840
1,640 / 1,490
2,900 / 2,630

6.0 / 5.8

7.2 / 7.8

12.4 / 12.7

7.5 / 6.9

13.0 / 11.7
40

1,000 x 790 x 310

39 x 31 x 12

ø6.35 x 7.5
ø9.52 x 7.5

ø17

G8C124JU1EL

G8C150JU1EH

INDUCTION MOTOR

1,060+1,250

-

RAC12128-9622
RAC12122-9622

Samsung Electronics2

MEMO

3Samsung Electronics

Low Medium High

Automatic(rotated : )

2. Operating Instructions & Technical Document

2-1 Operating Instructions

2-1-1 The Feature of Key in remote control

NAMED OF KEYNo

1

2

3

(On/Off)

(UP)

(DOWN)

On/Off button.
Press the button to stop or run the air conditioner.

Temperature adjustment button(UP).
To increase the temperature by the pressing the temperature button.

Temperature adjustment button(DOWN).
To decrease the temperature by the pressing the temperature button.

Mode selection button.
Each time you press this button
Mode is changed in the following order

Fan speed adjustment button.
Each time you press this button, FAN SPEED is changed in the following order.

FUNCTION OF KEY

: Auto Mode : Fan Only
: Cool Mode : Heat Mode
: Dry Mode

4

5

6

7

Swing button.
It adjusts the airflow to upward and downward.

Turbo button.
The air conditioner cools or heats the room as quickly as possible.
After 30minutes, the air conditioner is reset automatically to the previous mode.

Sleep button.
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 6 hours.

Samsung Electronics4

The Feature of Key in remote control(cont.)

On Timer button.
The On Timer enables you to switch on the air conditioner automatically after

8

9

10

a given period of time that is from 30 minutes to 24 hours.
To set the operating time, press the button one or more times until the required

time display.

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 set the operating time, press the button one or more times until the required
time display.

Timer Set/Cancel button.
After setting On Timer or Off Timer, press the button to set it completely.

And press the button again to cancel On Timer or Off Timer set.

FUNCTION OF KEYNAMED OF KEYNo

11

Digital On/Off button.
If you want to turn off the display during operation press the button.

5Samsung Electronics

Operating Instructions & Technical Document

2-1-2 Name & Function of Key in remote control

1. AUTO MODE : In this mode, operation mode(COOL,
HEAT) is selected automatically by the room temperature
of initial operation.

Room Temp

Tr≥ 21°C+∆T
21°C +∆T>Tr

Cool Operation (Set Temp:24˚C+∆T)
Heat Operation (Set Temp:22˚C+∆T)

Operation Type

∆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
difference between the setting and room temperature.
(18°C~30°C)

3. HEAT MODE : The unit operates according to the
difference between the setting and room tempera­ture.(16°C~30°C)
*Prevention against cold wind : In order to prevent the

cool air from flowing out at the heat mode, the indoor fan
does not operate or operates very slowly in the
following cases. At this time, the indoor heat exchanger
will be preheating.

- For 3~5 minutes after the initial operation

- For deicing operation

- The operation of an indoor fan in accordance with
the temperature of an indoor heat exchanger

The temperature of

indoor heat exchanger

below 28˚C

28˚C~below 34˚C

34˚C~below 40˚C

above 40˚C

Indoor fan speed

off

LL Speed

L Speed

Setting Speed

*High temperature release function : It is a function to

detect an outdoor overload by the sensor of an indoor
heat exchanger and to turn the outdoor fan or the
compressor ON/OFF for safety.

*Deice : Deicing operation is controlled by indoor unit's

heat exchanger temperature and accumulating time of
compressor's operation.
Deice ends by sensing of the processing time by deice
condition.

4. 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)

5. TURBO MODE : This mode is available in AUTO, COOL,
HEAT, 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.

6. SLEEP MODE : Sleep mode is available only in COOL or
HEAT 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
maintained.

*In HEAT mode : The setting temperature is automatically

dropped by 1°C each 1hour.
When the temperature has been dropped by total of 2°C,
that temperature is maintained.

7. FAN SPEED : Manual (3 step), Auto (4 step)
Fan speed automatically varies depending on both the
difference between setting and the room temperature.

8. COMPULSORY OPERATION :
For operating the air conditioner without the remote
control.
*The air conditioner starts up in the most suitable mode

for the room temperature:

Room Temperature

Less than 21˚C

21˚C or above

Operating Mode

Heat

Cool

Temperature Setting

24˚C approx.
22˚C approx.

Samsung Electronics6

Operating Instructions & Technical Document

9. 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.

10. 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.

11. SELF DIAGNOSIS

Error Mode

Indoor unit room temperature sensor
error (open or short)

Indoor unit heat exchanger
temperature sensor error(open or short)

Indoor FAN MOTOR error :
Keep the RPM value 450 below for
15 seconds

EEPROM error

Error in option
In case of No option set-up
In case of option data error

DISPLAY 7-SEGMENT

Operation Off Operation On

OFF E1

OFF E2

OFF E3

OFF E6

All lamp

blinking

All lamp

blinking

Remark

12. 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".

7Samsung Electronics

2-2 Technical Document (Pressure Graph)

20

27.2

26.5

31.6

30.4

38.8

38.5

25 30

Outdoor Temperature (ßC)

High Pressure (kgf/cm

2

G)

35 40 45

43

39

35

31

27

23

19

15

A-unit
B-unit

25.225.225.2

28.828.828.8

20 25 30

Outdoor Temperature (ßC)

Low Pressure (kgf/cm

2

G)

35 40 45

9.8

9.6

9.4

9.2
9

8.8

8.6

8.4

8.2
8

8.2

8.2

8.3

9.4

A-unit
B-unit

8.518.51

8.288.28

8.5

8.3

8.738.738.7

9.529.529.5

2-2-1 MH18AP1(P2)

■ Cooling(7.5m–Piping)

Cooing

Indoor

(DB/WB)

Outdoor

(DB)

High Pressure Low Pressure

A-unit B-unit A-unit B-unit

27/19 21/15 28.8 27.2 8.2 8.2
27/19 27/20 26.5 25.2 8.3 8.3
27/19 35/24 31.6 30.4 8.7 8.5
27/19 43/26 38.5 38.8 9.5 9.4

Samsung Electronics8

2-1-1 MH18AP1(P2)

20 25 30

Outdoor Temperature (ßC)

35 40 45

High Pressure (kgf/cm

2

G)

43

39

35

31

27

23

19

15

27.8

26.8

32.3

31.3

38.2

37.9

A-unit
B-unit

2525

24.424.4

25.025.025.0

24.4

20 25 30

Outdoor Temperature (ßC)

35 40 45

Low Pressure (kgf/cm

2

G)

9

8.8

8.6

8.4

8.2

8

7.8

8.0

8.0

8.0

8.4

8.8

8.8

8.2

8.0

A-unit
B-unit

■ Cooling(15m–Piping)

Operating Instructions & Technical Document

Cooing

Indoor

(DB/WB)

Outdoor

(DB)

High Pressure Low Pressure

A-unit B-unit A-unit B-unit

27/19 21/15 27.8 25.0 8.0 8.0
27/19 27/20 26.8 24.4 8.0 8.0
27/19 35/24 32.3 31.3 8.4 8.2
27/19 43/26 38.2 37.9 8.8 8.8

9Samsung Electronics

Operating Instructions & Technical Document

-15 -10 -5

Outdoor Temperature (ßC)

0510

High Pressure (kgf/cm

2

G)

29.5

27.5

25.5

23.5

21.5

19.5

17.5

15.5

13.5

11.5

23.8

28.6

20.2

A-unit
B-unit

23.8523.85

(27.8)(27.8)

25.6925.69

23.9

27.8

25.7

-15 -10 -5

Outdoor Temperature (ßC)

0510

Low Pressure (kgf/cm

2

G)

7.5
7

6.5
6

5.5
5

4.5
4

3.5
3

6.0

6.8

A-unit
B-unit

(5.9)(5.9)

6.846.84

3.683.68

3.723.72

5.9

6.8

3.7

3.7

■ Heating(7.5m–Piping)

Heating

Indoor

(DB/WB)

Outdoor

(DB)

High Pressure Low Pressure

A-unit B-unit A-unit B-unit

20/15 –10 23.9 20.2 3.7 3.7

20/15 7 28.6 25.7 6.8 6.8

Samsung Electronics10

■ Heating(15m–Piping)

-15 -10 -5

Outdoor Temperature (ßC)

0510

High Pressure (kgf/cm

2

G)

31.5

29.5

27.5

25.5

23.5

21.5

19.5

17.5

15.5

13.5

11.5

29.0

25.7

19.6

27.4

23.8

A-unit
B-unit

23.9323.9323.9

-15 -10 -5

Outdoor Temperature (ßC)

0510

Low Pressure (kgf/cm

2

G)

7

6.5
6

5.5
5

4.5
4

3.5
3

3.5

3.4

A-unit
B-unit

(5.9)(5.9)

(27.4)(27.4)

5.9

6.7

6.7

5.8

Operating Instructions & Technical Document

Heating

Indoor

(DB/WB)

Outdoor

(DB)

High Pressure Low Pressure

A-unit B-unit A-unit B-unit

20/15 –10 23.9 19.6 3.5 3.4

20/15 7 29.0 25.7 6.7 6.7

11Samsung Electronics

Operating Instructions & Technical Document

20 25 30

Outdoor Temperature (ßC)

35 40 45

High Pressure (kgf/cm

2

G)

43

39

35

31

27

23

19

15

27.2

27.0

26.8

26.6

31.8

31.6

38.4

37.6

A-unit
B-unit

20 25 30

Outdoor Temperature (ßC)

35 40 45

Low Pressure (kgf/cm

2

G)

9.4

9.2
9

8.8

8.6

8.4

8.2
8

8.8

9.2

A-unit
B-unit

8.58.5

8.58.5

8.38.3

8.38.3

8.98.9

9.39.3

8.5

8.5

8.3

8.9

9.3

8.3

2-2-2 MH19AP1(P2)

■ Cooling(7.5m–Piping)

Cooing

Indoor

(DB/WB)

Outdoor

(DB)

High Pressure Low Pressure

A-unit B-unit A-unit B-unit

27/19 21/15 27.2 27.0 8.5 8.5
27/19 27/20 26.8 26.6 8.3 8.3
27/19 35/24 31.8 31.6 8.9 8.8
27/19 43/26 38.4 37.6 9.3 9.2

Samsung Electronics12

2-1-1 MH18AP1(P2)

20 25 30

Outdoor Temperature (ßC)

35 40 45

High Pressure (kgf/cm

2

G)

43

39

35

31

27

23

19

15

27.4

27.2

27.0

26.8

32.0

31.8

38.6

37.8

A-unit
B-unit

20 25 30

Outdoor Temperature (ßC)

35 40 45

Low Pressure (kgf/cm

2

G)

9.4

9.2
9

8.8

8.6

8.4

8.2
8

8.4

8.2

8.4

9.2

8.8

8.2

8.1

A-unit
B-unit

8.78.78.7

■ Cooling(15m–Piping)

Operating Instructions & Technical Document

Cooing

Indoor

(DB/WB)

Outdoor

(DB)

High Pressure Low Pressure

A-unit B-unit A-unit B-unit

27/19 21/15 27.4 27.2 8.4 8.2
27/19 27/20 27.0 26.8 8.2 8.1
27/19 35/24 32.0 31.8 8.7 8.4
27/19 43/26 38.6 37.8 9.2 8.8

13Samsung Electronics

Operating Instructions & Technical Document

-15 -10 -5

Outdoor Temperature (ßC)

0510

High Pressure (kgf/cm

2

G)

35

32

29

26

23

20

27.5

22.7

33.1

27.7

A-unit
B-unit

-15 -10 -5

Outdoor Temperature (ßC)

0510

Low Pressure (kgf/cm

2

G)

7

6.5
6

5.5
5

4.5
4

3.5
3

3.5

6.8

6.7

3.4

A-unit
B-unit

■ Heating(7.5m–Piping)

Heating

Indoor

(DB/WB)

Outdoor

(DB)

High Pressure Low Pressure

A-unit B-unit A-unit B-unit

20/15 –10 22.7 27.5 3.5 3.4

20/15 7 27.7 33.1 6.8 6.7

Samsung Electronics14

■ Heating(15m–Piping)

-15 -10 -5

Outdoor Temperature (ßC)

0510

High Pressure (kgf/cm

2

G)

36.5

31.5

26.5

21.5

16.5

11.5

26.7

21.3

32.3

26.3

A-unit
B-unit

-15 -10 -5

Outdoor Temperature (ßC)

0510

Low Pressure (kgf/cm

2

G)

7

6.5
6

5.5
5

4.5
4

3.5
3

3.4

6.7

3.1

A-unit
B-unit

6.46.46.4

Operating Instructions & Technical Document

Heating

Indoor

(DB/WB)

Outdoor

(DB)

High Pressure Low Pressure

A-unit B-unit A-unit (7.5m) B-unit (32.5m)

20/15 –10 21.3 26.7 3.4 3.1

20/15 7 26.3 32.3 6.7 6.4

15Samsung Electronics

Operating Instructions & Technical Document

20 25 30

Outdoor Temperature (ßC)

35 40 45

High Pressure (kgf/cm

2

G)

43

39

35

31

27

23

19

15

27.9

31.1

38.0

38.0

30.1

28.7528.75

25.425.4

28.8

26.0

25.4

A-unit
B-unit

20 25 30

Outdoor Temperature (ßC)

35 40 45

Low Pressure (kgf/cm

2

G)

9.5

9.4

9.3

9.2

9.1
9

8.9

8.8

8.7

8.6

8.5

9.0

8.9

9.1

9.2

9.2

9.0

8.8

8.9

A-unit
B-unit

2-2-3 MH24AP1(P2)

■ Cooling(7.5m–Piping)

Cooing

Indoor

(DB/WB)

Outdoor

(DB)

High Pressure Low Pressure

A-unit B-unit A-unit B-unit

27/19 21/15 28.8 26.0 8.9 9.0
27/19 27/20 27.9 25.4 8.8 8.9
27/19 35/24 31.1 30.1 9.0 9.1
27/19 43/26 38.0 38.0 9.2 9.2

Samsung Electronics16

2-1-1 MH18AP1(P2)

20 25 30

Outdoor Temperature (ßC)

35 40 45

High Pressure (kgf/cm

2

G)

39

35

31

27

23

19

15

27.8

26.9

29.1

37.3

26.0

A-unit
B-unit

24.424.4

30.130.1

3737

24.4

30.1

37.0

20 25 30

Outdoor Temperature (ßC)

35 40 45

Low Pressure (kgf/cm

2

G)

9.5

9.4

9.3

9.2

9.1
9

8.9

8.8

8.7

8.6

8.5

8.8

8.7

8.7

8.6

8.9

8.8

9.0

A-unit
B-unit

9.0

■ Cooling(15m–Piping)

Operating Instructions & Technical Document

Cooing

Indoor

(DB/WB)

Outdoor

(DB)

High Pressure Low Pressure

A-unit B-unit A-unit B-unit

27/19 21/15 27.8 26.0 8.7 8.8
27/19 27/20 26.9 24.4 8.6 8.7
27/19 35/24 30.1 29.1 8.8 8.9
27/19 43/26 37.3 37.0 9.0 9.0

17Samsung Electronics

Operating Instructions & Technical Document

-15 -10 -5

Outdoor Temperature (ßC)

0510

High Pressure (kgf/cm

2

G)

31.5

29.5

27.5

25.5

23.5

21.5

19.5

17.5

15.5

13.5

11.5

24.9

30.0

26.7

A-unit
B-unit

20.6120.61

(28.4)(28.4)

(24.8)(24.8)

20.6

28.4

24.8

-15 -10 -5

Outdoor Temperature (ßC)

0510

Low Pressure (kgf/cm

2

G)

7.5
7

6.5
6

5.5
5

4.5
4

3.5
3

A-unit
B-unit

6.0

7.0

3.7

6.856.85

3.73.7

(5.9)(5.9)

6.9

3.7

5.9

■ Heating(7.5m–Piping)

Heating

Indoor

(DB/WB)

Outdoor

(DB)

High Pressure Low Pressure

A-unit B-unit A-unit B-unit

20/15 –10 24.9 20.6 3.7 3.7

20/15 7 30.0 26.7 7.0 6.9

Samsung Electronics18

■ Heating(15m–Piping)

-15 -10 -5

Outdoor Temperature (ßC)

0510

High Pressure (kgf/cm

2

G)

31.5

29.5

27.5

25.5

23.5

21.5

19.5

17.5

15.5

13.5

11.5

A-unit
B-unit

19.6

29.0

25.7

27.4

23.8

23.9123.9123.9

-15 -10 -5

Outdoor Temperature (ßC)

0510

Low Pressure (kgf/cm

2

G)

7

6.5
6

5.5
5

4.5
4

3.5
3

A-unit
B-unit

3.5

3.5

5.9

6.8

5.8

6.7

Operating Instructions & Technical Document

Heating

Indoor

(DB/WB)

Outdoor

(DB)

High Pressure Low Pressure

A-unit B-unit A-unit B-unit

20/15 –10 23.9 19.6 3.5 3.5

20/15 7 29.0 25.7 6.8 6.7

19Samsung Electronics

Operating Instructions & Technical Document

High Pressure (kgf/cm

2

G)

43.0

39.0

35.0

31.0

27.0

23.0

19.0

15.0

27.3

27.1

32.2

31.3

39.5

38.0

20 25 30

Outdoor Temperature (ßC)

35 40 45

A-unit
B-unit

25.4625.46

25.0625.06

25.5

25.1

Low Pressure (kgf/cm

2

G)

10.0

9.5

9.0

8.5

8.0

7.5

7.0

6.5

6.0
20 25 30 35 40 45

6.9

6.8

8.8

8.6

9.6

A-unit
B-unit

9.319.319.3

6.646.646.6

6.776.776.8

Outdoor Temperature (ßC)

2-2-4 MH26AP1(P2)

■ Cooling(7.5m–Piping)

Cooing

Indoor

(DB/WB)

Outdoor

(DB)

High Pressure Low Pressure

A-unit B-unit A-unit B-unit

27/19 21/10 27.3 25.5 6.8 6.9
27/19 27/19 27.1 25.1 6.6 6.8
27/19 35/24 32.2 31.3 8.6 8.8
27/19 45/26 39.5 38.0 9.3 9.6

Samsung Electronics20

2-1-1 MH18AP1(P2)

High Pressure (kgf/cm

2

G)

43.0

39.0

35.0

31.0

27.0

23.0

19.0

15.0
20 25 30

Outdoor Temperature (ßC)

35 40 45

39.5

28.1

38.0

A-unit
B-unit

28.6

29.5729.57

32.8732.87

32.4032.40

29.3229.32

29.6

32.9

32.4

29.3

Low Pressure (kgf/cm

2

G)

10.0

9.5

9.0

8.5

8.0

7.5

7.0
20 25 30

Outdoor Temperature (ßC)

35 40 45

A-unit
B-unit

8.9

7.67.67.6

9.8

8.33

9.129.12

8.148.14

8.338.33

9.1

8.1

7.62

8.3

7.627.627.6

8.48.48.4

■ Cooling(15m–Piping)

Operating Instructions & Technical Document

Cooing

Indoor

(DB/WB)

Outdoor

(DB)

High Pressure Low Pressure

A-unit B-unit A-unit B-unit

27/19 21/10 29.6 29.3 7.6 8.4
27/19 27/19 28.1 28.6 7.6 8.3
27/19 35/24 32.4 32.9 8.1 9.1
27/19 45/26 39.5 38.0 8.9 9.8

21Samsung Electronics

Operating Instructions & Technical Document

High Pressure (kgf/cm

2

G)

29

27

25

23

21

19

-12 -7 -2

Outdoor Temperature (ßC)

38

A-unit
B-unit

19.3

20.0

24.8

24.7

28.0

27.2

High Pressure (kgf/cm

2

G)

7

6.5
6

5.5
5

4.5
4

3.5
3

2.5

-11 -6 -1

Outdoor Temperature (ßC)

49

A-unit
B-unit

3.0

3.273.27

(5.22)(5.22)

4.9

6.386.38

6.0

3.3

5.2

6.4

■ Heating(7.5m–Piping)

Heating

Indoor

(DB/WB)

Outdoor

(DB)

High Pressure Low Pressure

A-unit B-unit A-unit B-unit

20/15 –10 20.0 19.3 3.3 3.0
20/15 2 24.8 24.7 5.2 4.9
20/15 7 28.0 27.2 6.4 6.0

Samsung Electronics22

■ Heating(15m–Piping)

High Pressure (kgf/cm

2

G)

29

27

25

23

21

19

17

-12 -7 -2

Outdoor Temperature (ßC)

38

A-unit
B-unit

19.0

25.5

27.7

24.4

24.3

19.7

Low Pressure (kgf/cm

2

G)

6.5

6

5.5

5

4.5

4

3.5

3

2.5

-11 -6 -1

Outdoor Temperature (ßC)

49

A-unit
B-unit

2.8

4.5

5.4

6.2

3.1

5.0

Operating Instructions & Technical Document

Heating

Indoor

(DB/WB)

Outdoor

(DB)

High Pressure Low Pressure

A-unit B-unit A-unit B-unit

20/15 –10 19.7 19.0 3.1 2.8
20/15 2 24.4 24.3 5.0 4.5
20/15 7 27.7 25.5 6.2 5.4

23Samsung Electronics

3. Disassembly and Reassembly

Stop operation of the air conditioner and remove the power cord before repairing the unit.

3-1 Indoor Unit

No Parts Procedure Remark

1 Front Panel

1) Stop the air conditioner operation and
block the main power.

2) Detach tape of Front Panel upper.

3) Slide the lower Front Grille down, then
disassemble it by pulling it forwards.

4) Open the upper Front Grille by pulling right
and left sides of the Grille.

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) Pull the lower left and right of discharge
softly for the outside cover to be pulled out.

Samsung Electronics24