Midea Elite, MSE-07HR, MSE-07CR, MSE-09HR, MSE-12CR Service Manual

GD Midea Refrigeration Equipment Co.,Ltd

SPLIT TYPE, HEAT PUMP AIR CONDITIONERS

Technical & service manual 2005

Elite Series(7000-18000) R22 Wall Mounted

[Models]

MSE-07CR
MSE-07HR
MSE-09CR
MSE-09HR
MSE-12CR
MSE-12HR
MSE-18CR
MSE-18HR

1

Elite SERIES (R22)

Contents

1. Features………………………………………………………………… 02

2. Specification………………………………………………………..……03

3. Dimensions…………………………………………………………..… 05

4. Refrigeration cycle diagram……………………………………………08

5. Capacity table…………………………………………………………...09

6. Wiring diagram…………………………………………………..………15

7. Electronic function………………………………………….…………...20

8. Troubleshooting……………………………………………………….…28

9. Characteristic of temp. sensor…………………………………………31

2

1.Features

1.1 Compact design

1.2 LED display

3

2.Specification

MSE-07CR MSE-07HR MSE-09CR MSE-09HR

Ph-V-Hz 220-240V~,50Hz 220-240V~,50Hz 220-240V~,50Hz 220-240V~,50Hz

Capacity Btu/h

7000 7000

9000 9000
Input W 800 800 1050 1050
Rated current A 3.5 3.5 4.6 4.6
EER Btu/w.h, w/w

8.8,2.6 8.8,2.6

8.6,2.5 8.6,2.5
Capacity Btu/h 8000 10000
Input W 800 1020
Rated current A 3.5 4.45
COP W/W 2.93 2.88

L/h 0.8 0.8 1.0 1.0

W 1300

1000

1350 1350
A 6.8 5.0 6.0 6.0
A 17.2 17.2 18.0 18.0

Model

2P14C225ANA 2P14C225ANA

2P18S225ANK 2P18S225ANK

T

yp

e

Rotar

y

Rotar

y

Rotar

y

Rotar

y

Brand GD Matsushita GD Matsushita GD Matsushita GD Matsushita
Ca

p

acity Btu/h 7500 7500 9920 9920

In

p

ut W 725 7 25 9 70 97 0

Rated current

(

RL A 3.4 3.4 4.5 4.5

Locked rotor Am

p

A15152424

Thermal

p

rotector B160-135-141E MRA98854

ternal（MRA98745

ternal（MRA98745

Ca

p

acitor uF 25 25 30 30

Refri

g

erant oil ml ATOMOS M60 270 ATOMOS M60 270 SUNISO 350 SUNISO 350

Model

RPG13H RPG13H RPG13H RPG13H

Brand Wellin

g

Wellin

g

Wellin

g

Wellin

gInp

ut W

39.5 39.5 39.5 39.5

Ca

p

acitor uF

1.2 1.2 1.2 1.2

S

p

eed(hi/mi/lo) r/min 1050/950/800 1050/950/800 1250/1100/850 1250/1100/850

m3/h

400/35/300 400/35/300

450/400/350 450/400/350

dB(A)

35/32/30 35/32/30 37/34/32 37/34/32

Dimension (W*H

*

mm

710×250×195 710×250×195 710×250×195 710×250×195

Packing (W*H*

D

mm

800×340×270 800×340×270 800×340×270 800×340×270

Net/Gross weight Kg
Model

YDK24-6T YDK24-6T YDK24-6T YDK24-6T
Brand Welling Welling Welling Welling
Input W

70 70 70 70

Capacitor uF

3333

Speed r/min

850 850 850 850

m3/h 1500 1500 1800 1800

dB(A)

49 49

50 50

Dimension(W*H*

D

mm

700X535X235 700X535X235 700X535X235 700X535X235

Packing (W*H*D mm

815X580X325 815X580X325 815X580X325 815X580X325

Net/Gross weight Kg

28/31 28/31 28/31 28/31

g 530 570 580 800

MPa

2.6 2.6 2.6 2.6

Liquid side/ Gas

s

mm(inch)

Ф

6.35/Ф9.53

Ф

6.35/Ф9.53

Ф

6.35/Ф9.53

Ф

6.35/Ф9.53

Max. refrigerant

p

m10101010

Max. difference i

n

m5555

16A 16A 16A 16A

Electrolic control Electrolic control Electrolic control Electrolic control

℃

17-30 17-30 17-30 17-30

℃

18?-45 -7 -? 45 18?-45 -7 -? 45
m2 10-14 10-14 14-21 14-21
set 126/272/298 126/272/298 126/272/298 126/272/298

Ambient temp
Application area
Qty’per 20’ /40’ /40'HQ

Connection wiring
Plug type
Thermostat type
Operation temp

Outdoor unit

Refrigerant type R22(R407C)
Design pressure

Refrigerant piping

Indoor unit

Outdoor fan moto

r

Outdoor air flow
Outdoor noise level

Compressor

Indoor fan motor

Indoor air flow (Hi/Mi/Lo)
Indoor noise level (Hi/Mi/Lo)

Moisture Removal
Max. input consumption
Max. current
Starting current

Model

Power supply

Cooling

Heating

★1 The noise date is base on hemi-anechoic chamber, during actual operation, these values are normally somewhat different as a result of ambient
condition.

4

MSE-12CR MSE-12HR MSE-18CR MSE-18HR

Ph-V-Hz 220-240V~,50Hz 220-240V~,50Hz 220-240V~,50Hz 220-240V~,50Hz

Capacity Btu/h

12000 12000

18000 18000

Input W

1350 1350 1960 1960

Rated current A

6.0 6.0

9.4 9.4

EER Btu/w.h, w/w

8.9,2.6 8.9,2.6 9.2,2.7 9.2,2.7
Capacity Btu/h 14000 / 20500
Input W

1350

/ 1890

Rated current A

6.0

/8.6

COP W/W 3.0 / 3.2

L/h 1.5 1.5 1.9

W

1700 1700

2200 2130
A 8.0 8.0 10.2 10.4
A

25 25 36 36

Model

PH225X2C-4FT PH225X2C-4FT PH290X2C-4FT1 PH290X2C-4FT1

T

yp

e

Rotar

y

Rotar

y

Rotar

y

Rotar

y

Brand

GMCC GMCC

GD Toshiba GD Toshiba

Ca

p

acity Btu/h 13197/13299 13197/13299 17435 17435

In

p

ut W 1250/1285 1250/1285 1670 1670

Rated current

(

RL A 5.7/5.5 5.7/5.5 8.0 8.0

Locked rotor Am

p

A 29.9/33 29.9/33 41.2 41.2

Thermal

p

rotector UP3RE0591-T56 UP3RE0591-T56 Internal Internal

Ca

p

acitor uF

35 35 35 35

Refri

g

erant oil ml

480 480 520 520

Model

RPG13D RPG13D RPG25 RPG25

Brand Wellin

g

Wellin

g

Wellin

g

Wellin

gInp

ut W

38.5 38.5

53 53

Ca

p

acitor uF 1.5uF/450V 1.5uF/450V

S

p

eed(hi/mi/lo) r/min 1180/1000/850 1180/1000/850 1180/1080/800 1180/1080/800

m3/h

580/500/420 580/500/420 80 0/730/60 0 800/730/600

dB(A)

37/32/28 37/32/28

42/40/38 42/40/38

Dimension (W*H

*

mm

790x265x195 790x265x195

920×292×225 920×292×225

Packing (W*H*

D

mm

875×375×285 875×375×285

1015X370X295 1015X370X295

Net/Gross weight Kg

9.0/11.5 9.0/11.5 13/15 13/15

Model

YDK24-6 YDK24-6 YDK36-6 YDK36-6
Brand Welling Welling WELLING WELLING
Input W

85 85 96 96

Capacitor uF

2.5μF/450V 2.5μF/450V 2.5μF/450V 2.5μF/450V

Speed r/min

900 900 900 900

m3/h 2000 2000 1800 1800

dB(A)

54 54

56 56

Dimension(W*H*

D

mm

780×540×250 780×540×250

780X540X250 780X540X250
Packing (W*H*D mm 910x575x335 910x575x335 9 10x575x335 910x575x335
Net/Gross weight Kg

34/37 34/37 37/40 40/43

g

850 900

1130 1400

MPa

2.6 2.6 2.6 2.6

Liquid side/ Gas

s

mm(inch)

Ф

6.35/φ12.7

Ф

6.35/φ12.7

Ф

6.35/Ф9.53

Ф

6.35/Ф9.53

Max. refrigerant

p

m10101010

Max. difference i

n

m5555

No No No No

16A 16A No No

Electronic control Electronic control Electronic control Electronic control

℃

17-30 17-30 17-30 17-30

℃

18-45 —7-45 17-45 —7-45
m2 18-26 18-26 30-40 30-40
set 108/226/266 108/226/266 100/210/245 100/210/245

Ambient temp
Application area
Qty’per 20’ /40’ /40'HQ

Connection wiring
Plug type
Thermostat type
Operation temp

Outdoor unit

Refrigerant type R22(R407C)
Design pressure

Refrigerant piping

Indoor unit

Outdoor fan moto

r

Outdoor air flow
Outdoor noise level

Compressor

Indoor fan motor

Indoor air flow (Hi/Mi/Lo)
Indoor noise level (Hi/Mi/Lo)

Moisture Removal
Max. input consumption
Max. current
Starting current

Model

Power supply

Cooling

Heating

★1 The noise date is base on hemi-anechoic chamber, during actual operation, these values are normally somewhat different as a result of ambient
condition.

5

3.Dimensions

3.1 Indoor unit
MSE-07CR, MSE-07HR
MSE-09CR, MSE-09HR

MSE-12CR, MSE-12HR

6

MSE-18CR, MSE-18HR

7

3.4 Outdoor unit

MSE-07CR, MSE-07HR
MSE-09CR, MSE-09HR

3.5 Outdoor unit

MSE-12CR, MSE-12HR
MSE-18CR, MSE-18HR

8

4.Refrigeration cycle diagram

9

5. Capacity table

5.1 MSE-07CR

SUMMER OUTDOOR TEMPERATURE DRY

Indoor

Conditions

25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

Total capacity kW 2.02 1.92 1.79 1.64 1.51 1.41
Sensitive capacity kW 1.44 1.39 1.34 1.27 1.20 1.15

21ºC D

15ºC W

Input kW. 0.70 0.76 0.82 0.88 0.95 1.00
Total capacity kW 2.16 2.07 1.95 1.83 1.71 1.60
Sensitive capacity kW 1.53 1.48 1.43 1.38 1.34 1.32

24ºC D

17ºC W

Input kW. 0.70 0.77 0.84 0.90 0.97 1.03
Total capacity kW 2.32 2.27

2.15

1.98 1.81 1.65

Sensitive capacity kW 1.65 1.62

1.56

1.48 1.41 1.34

27ºC D

19ºC W

Input kW. 0.72 0.79

0.85

0.92 0.99 1.05
Total capacity kW 2.36 2.39 2.36 2.28 2.18 2.07
Sensitive capacity kW 1.57 1.59 1.57 1.55 1.53 1.54

32ºC D

23ºC W

Input kW. 0.71 0.19 0.87 0.95 1.03 1.10

5.2 MSE-07HR

SUMMER OUTDOOR TEMPERATURE DRY

Indoor

Conditions

25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

Total capacity kW 2.02 1.92 1.79 1.64 1.51 1.41

Sensitive capacity kW 1.44 1.39 1.34 1.27 1.20 1.15

21ºC D

15ºC W

Input kW. 0.70 0.76 0.82 0.88 0.95 1.00

Total capacity kW 2.16 2.07 1.95 1.83 1.71 1.60

Sensitive capacity kW 1.53 1.48 1.43 1.38 1.34 1.32

24ºC D

17ºC W

Input kW. 0.70 0.77 0.84 0.90 0.97 1.03

Total capacity kW 2.32 2.27

2.15

1.98 1.81 1.65
Sensitive capacity kW 1.65 1.62

1.56

1.48 1.41 1.34

27ºC D

19ºC W

Input kW. 0.72 0.79

0.85

0.92 0.99 1.05

Total capacity kW 2.36 2.39 2.36 2.28 2.18 2.07

Sensitive capacity kW 1.57 1.59 1.57 1.55 1.53 1.54

32ºC D

23ºC W

Input kW. 0.71 0.19 0.87 0.95 1.03 1.10

10

WINTER OUTDOOR CONDITIONS

Indoor

Conditions

12ºC D

11ºC W

7ºC D

6ºC W

4ºC D

3ºC W

0ºC D

-1ºC W

-4ºC D

-6ºC W

-7ºC D

-8ºC W

Capacity kW 2.75 2.45 2.17 1.40 1.17 1.13

15ºC

Input kW. 0.97 0.86 0.77 0.67 0.62 0.65

Capacity kW 2.60 2.33 2.10 1.33 1.23 1.09

18ºC

Input kW. 0.99 0.86 0.78 0.71 0.68 0.68

Capacity kW 2.58

2.35

2.08 1.27 1.14 1.11

20ºC

Input kW. 1.02

0.90

0.81 0.71 0.67 0.64

Capacity kW 2.40 2.29 1.99 1.07 1.15 1.07

22ºC

Input kW. 0.94 0.89 0.81 0.70 0.68 0.63

5.3 MSE-09CR

SUMMER OUTDOOR TEMPERATURE DRY

Indoor

Conditions

25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

Total capacity kW 2.44 2.32 2.16 1.98 1.82 1.70

Sensitive capacity kW 1.68 1.63 1.56 1.48 1.40 1.34

21ºC D

15ºC W

Input kW. 0.87 0.95 1.02 1.09 1.17 1.24

Total capacity kW 2.62 2.50 2.36 2.20 2.07 1.94

Sensitive capacity kW 1.78 1.73 1.67 1.61 1.56 1.54

24ºC D

17ºC W

Input kW. 0.87 0.95 1.03 1.11 1.20 1.28

Total capacity kW 2.80 2.75

2.60

2.40 2.18 1.99
Sensitive capacity kW 1.93 1.89

1.82

1.73 1.64 1.57

27ºC D

19ºC W

Input kW. 0.89 0.97

1.05

1.14 1.22 1.30

Total capacity kW 2.85 2.90 2.86 2.76 2.63 2.50

Sensitive capacity kW 1.83 1.85 1.84 1.81 1.78 1.79

32ºC D

23ºC W

Input kW. 0.88 0.98 1.07 1.17 1.27 1.37

11

5.4 MSE-09HR

SUMMER OUTDOOR TEMPERATURE DRY

Indoor

Conditions

25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

Total capacity kW 2.44 2.32 2.16 1.98 1.82 1.70

Sensitive capacity kW 1.68 1.63 1.56 1.48 1.40 1.34

21ºC D

15ºC W

Input kW. 0.87 0.95 1.02 1.09 1.17 1.24

Total capacity kW 2.62 2.50 2.36 2.20 2.07 1.94

Sensitive capacity kW 1.78 1.73 1.67 1.61 1.56 1.54

24ºC D

17ºC W

Input kW. 0.87 0.95 1.03 1.11 1.20 1.28

Total capacity kW 2.80 2.75

2.60

2.40 2.18 1.99
Sensitive capacity kW 1.93 1.89

1.82

1.73 1.64 1.57

27ºC D

19ºC W

Input kW. 0.89 0.97

1.05

1.14 1.22 1.30

Total capacity kW 2.85 2.90 2.86 2.76 2.63 2.50

Sensitive capacity kW 1.83 1.85 1.84 1.81 1.78 1.79

32ºC D

23ºC W

Input kW. 0.88 0.98 1.07 1.17 1.27 1.37

WINTER OUTDOOR CONDITIONS

Indoor

Conditions

12ºC D

11ºC W

7ºC D

6ºC W

4ºC D

3ºC W

0ºC D

-1ºC W

-4ºC D

-6ºC W

-7ºC D

-8ºC W

Capacity kW 3.58 3.18 2.80 1.82 1.52 1.47

15ºC

Input kW. 1.18 1.05 0.94 0.81 0.75 0.80

Capacity kW 3.37 3.02 2.72 1.73 1.60 1.41

18ºC

Input kW. 1.20 1.05 0.96 0.86 0.83 0.84

Capacity kW 3.35

3.05

2.70 1.64 1.48 1.44

20ºC

Input kW. 1.24

1.08

0.98 0.86 0.82 0.82

Capacity kW 3.11 2.97 2.57 1.40 1.50 1.39

22ºC

Input kW. 1.14 1.07 0.98 0.86 0.82 0.79

12

5.5 MSE-12CR

SUMMER OUTDOOR TEMPERATURE DRY

Indoor

Conditions

25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

Total capacity kW 3.38 3.21 2.99 2.75 2.52 2.35

Sensitive capacity kW 2.53 2.28 2.18 2.07 1.96 1.88

21ºC D

15ºC W

Input kW. 1.20 1.30 1.41 1.51 1.61 1.72

Total capacity kW 3.62 3.46 3.26 3.06 2.86 2.68

Sensitive capacity kW 2.50 2.42 2.34 2.25 2.19 2.16

24ºC D

17ºC W

Input kW. 1.20 1.31 1.43 1.54 1.65 1.76

Total capacity kW 3.88 3.80

3.60

3.32 3.02 2.76
Sensitive capacity kW 2.71 2.65

2.55

2.42 2.30 2.19

27ºC D

19ºC W

Input kW. 1.23 1.34

1.45

1.57 1.68 1.80

Total capacity kW 3.95 4.01 3.95 3.82 3.64 3.46

Sensitive capacity kW 2.56 2.59 2.57 2.53 2.50 2.51

32ºC D

23ºC W

Input kW. 1.22 1.35 1.48 1.62 1.75 1.89

5.6 MSE-12HR

SUMMER OUTDOOR TEMPERATURE DRY

Indoor

Conditions

25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

Total capacity kW 3.38 3.21 2.99 2.75 2.52 2.35

Sensitive capacity kW 2.53 2.28 2.18 2.07 1.96 1.88

21ºC D

15ºC W

Input kW. 1.20 1.30 1.41 1.51 1.61 1.72

Total capacity kW 3.62 3.46 3.26 3.06 2.86 2.68

Sensitive capacity kW 2.50 2.42 2.34 2.25 2.19 2.16

24ºC D

17ºC W

Input kW. 1.20 1.31 1.43 1.54 1.65 1.76

Total capacity kW 3.88 3.80

3.60

3.32 3.02 2.76
Sensitive capacity kW 2.71 2.65

2.55

2.42 2.30 2.19

27ºC D

19ºC W

Input kW. 1.23 1.34

1.45

1.57 1.68 1.80

Total capacity kW 3.95 4.01 3.95 3.82 3.64 3.46

Sensitive capacity kW 2.56 2.59 2.57 2.53 2.50 2.51

32ºC D

23ºC W

Input kW. 1.22 1.35 1.48 1.62 1.75 1.89

13

WINTER OUTDOOR CONDITIONS

Indoor

Conditions

12ºC D

11ºC W

7ºC D

6ºC W

4ºC D

3ºC W

0ºC D

-1ºC W

-4ºC D

-6ºC W

-7ºC D

-8ºC W

Capacity kW 4.81 4.28 3.78 2.45 2.04 1.97

15ºC

Input kW. 1.61 1.44 1.29 1.11 1.03 0.99

Capacity kW 4.53 4.06 3.66 2.32 2.14 1.98

18ºC

Input kW. 1.65 1.44 1.31 1.18 1.14 1.02

Capacity kW 4.50

4.10

3.63 2.21 1.98 1.94

20ºC

Input kW. 1.69

1.48

1.34 1.18 1.12 1.03

Capacity kW 4.20 3.99 3.46 1.87 2.00 1.87

22ºC

Input kW. 1.78 1.48 1.35 1.12 1.13 1.07

5.7 MSE-18CR

SUMMER OUTDOOR TEMPERATURE DRY

Indoor

Conditions

25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

Total capacity kW 4.69 4.45 4.15 3.81 3.50 3.27

Sensitive capacity kW 3.28 3.18 3.04 2.88 2.74 2.62

21ºC D

15ºC W

Input kW. 1.70 1.84 1.99 2.14 2.28 2.43

Total capacity kW 5.03 4.81 4.53 4.25 3.97 3.73

Sensitive capacity kW 3.47 3.37 3.25 3.13 3.04 3.00

24ºC D

17ºC W

Input kW. 1.70 1.86 2.02 2.17 2.33 2.50

Total capacity kW 5.38 5.28

5.00

4.61 4.20 3.83
Sensitive capacity kW 3.77 3.69

3.55

3.38 3.20 3.06

27ºC D

19ºC W

Input kW. 1.73 1.90

2.05

2.22 2.38 2.54

Total capacity kW 5.68 5.57 5.49 5.30 5.06 4.81

Sensitive capacity kW 3.57 3.61 3.58 3.52 3.48 3.50

32ºC D

23ºC W

Input kW. 1.72 1.91 2.10 2.29 2.48 2.67

14

5.8 MSE-18HR

SUMMER OUTDOOR TEMPERATURE DRY

Indoor

Conditions

25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

Total capacity kW 4.69 4.45 4.15 3.81 3.50 3.27

Sensitive capacity kW 3.28 3.18 3.04 2.88 2.74 2.62

21ºC D

15ºC W

Input kW. 1.70 1.84 1.99 2.14 2.28 2.43

Total capacity kW 5.03 4.81 4.53 4.25 3.97 3.73

Sensitive capacity kW 3.47 3.37 3.25 3.13 3.04 3.00

24ºC D

17ºC W

Input kW. 1.70 1.86 2.02 2.17 2.33 2.50

Total capacity kW 5.38 5.28

5.00

4.61 4.20 3.83
Sensitive capacity kW 3.77 3.69

3.55

3.38 3.20 3.06

27ºC D

19ºC W

Input kW. 1.73 1.90

2.05

2.22 2.38 2.54

Total capacity kW 5.68 5.57 5.49 5.30 5.06 4.81

Sensitive capacity kW 3.57 3.61 3.58 3.52 3.48 3.50

32ºC D

23ºC W

Input kW. 1.72 1.91 2.10 2.29 2.48 2.67

WINTER OUTDOOR CONDITIONS

Indoor

Conditions

12ºC D

11ºC W

7ºC D

6ºC W

4ºC D

3ºC W

0ºC D

-1ºC W

-4ºC D

-6ºC W

-7ºC D

-8ºC W

Capacity kW 6.92 6.15 5.44 3.52 2.94 2.83

15ºC

Input kW. 2.45 2.19 1.96 1.69 1.57 1.45

Capacity kW 6.52 5.84 5.27 3.35 3.09 2.78

18ºC

Input kW. 2.51 2.19 1.99 1.80 1.73 1.48

Capacity kW 6.48

5.90

5.22 3.18 2.86 2.79

20ºC

Input kW. 2.57

2.25

2.04 1.79 1.70 1.51

Capacity kW 6.02 5.74 4.98 2.70 2.88 2.75

22ºC

Input kW. 2.38 2.25 2.05 1.79 1.71 1.53

15

6. Schematic diagram and wiring diagram

6.1 Schematic diagram

1 2 3 4 5 6 78

A

B

C

D

8

7654321

D

C

B

A

C1
104

Vin

1

GND

2

Vout

3

IC3 780 5

+5V

E3

470uF/16V

E1

2200uF/25V

C4
104

D4

D3

D2

D1

Vin

1

GND

2

Vout

3

IC1 781 2

+12V-a

E2

1000uF/16V

C3
104

X14MR7

1M

A0

1

A1

2

A2

3

GND4SDA

5

SCL

6

WC

7

VCC

8

IC2

24C04

+5V C2

104

R2
10KR110K

SDA

SDA

SCL

SCL

C5
104

+5V

R412K

1
2

3

IC5 KIA70 42

RST

RST

BUZ1
BUZZER1

R5
1K

+12V

R27
2K

Q3
9014

BUZ

BUZ

E4

10uF/16V

R8

8.1K/1%

C6

104

R10 2K

D6
IN4148

D5
IN4148

+5V

1

2

CN2

T1_roo m

T1_roo m

T1_roo m

E5
10uF/16V

R9

8.1K/1%

C7

104

R11 2K

D8

IN41 48

D7
IN41 48

+5V

1

2

CN3

T2_I.p ipe

T2_I. pip e

T2_I. pip e

CT1
0057h

D10
1N4148

R14

1.4K/1%

R6

1K/1%

R13
16K

E6

10uF/16V

D9
1N4148

R12 2K

C8

104

+5V

Current

Cu rrent

Q2

9014

R15
12K

C9
104

D11 1N414 8
D12 1N414 8

R16 12K

R17
12K

R18 10K

+5V ZERO

ZERO

A

B

B

A

E7

10uF/16V

C10

102

R19 1 50

+5V

R20 1K

C11

104

REC

REC

R215.1K

D13
IN41 48

C12
103

+5V

1

2

3

CN4

FAN_BACK

+12V-a

FANSP_FEEDBAC K

FANSP_FEEDBAC K

REC

V

GND

REC1

RECEIVER_V

JR7
10K

C13
104

R23 2 K

+5V

AUTO_SELECT

AUTO_SELECT

C14

1.2uF/450V
IC6 PC 81 7

T1T2

G

TR1

BT131

L2

?

C15
333

R242K

+12V-a

R26
1K

E9
470uF/25V

R28
11K/2W

Z1

12V

D15

IN4 007

R29
11K/2W

L1

N

R25 51/1W

FAN_IN '

FAN_IN

IN1

1

IN2

2

IN3

3

IN4

4

IN5

5

IN6

6

IN7

7

VSS8VDD

9

OUT7

10

OUT6

11

OUT5

12

OUT4

13

OUT3

14

OUT2

15

OUT1

16

IC7

UJN2003

STEP_I2

STEP_I1

STEP_I3

STEP_I4

STEP_I2

STEP_I1

STEP_I3
STEP_I4

+12V-a

C19
104

1
2

3

4

5

CN12

SWING

FAN_IN '

FAN_IN

BUZ '

BUZ '

COMP

COMP

COMP '

COMP '

RY2
RELAY-SPST

+12V-a

D21

IN4148

R33
2K

Q5
9014

RY3
RELAY-SPST

+12V-a

D22

IN4 148

R34
2K

Q6
9014

RY4
RELAY-SPST

+12V-a

D23

IN4148

R35
2K

Q7
9014

RY5
RELAY-SPST

+12V-a

D24

IN4148

C20
333

R36
51/1W

VALVE

VALVE

FAN_OUT

FAN_OUT

HEAT

HEAT

RY6
COMP

C21
333

R37
51/1W

+12V-a

1

CN14

N

L(POWER_IN PORT)

LOAD_COMP

N

FUSE1

3.15A/250V

L1

L1

FRESH

FUSE2

10A

LOAD_VALVE

LOAD_FAN OUT

LOAD_HEAT L

LOAD_HEAT N

1

CN11

N

1

CN10

HEAT_L

1

CN9

HEAT_N

1
2

CN13

ZR1

10D471K

C23

0.1uF/275VAC

1

2

CN15

TRANS_IN

SW1

t

PTC
82RM

R39

5.1K

C22
104

R38
10K

+5V

SW_TEST

SW_TEST

Onl y For He at Pum p

Dsa

1

Dsb

2

Q0

3

Q1

4

Q2

5

Q3

6

GND

7

CP

8

MR9Q4

10

Q5

11

Q6

12

Q7

13

Vcc

14

IC8

74HC164

+5V

+5V

COM1

COM2

COM3SEG1

SEG2

SEG3

SEG4

R60
10K

R59

10K

+5V

C24

104

SEG3

SEG4

Q8

9012Q99012

Q10

9012

R44

330

R45 330
R46 330

R47 330

R48 330

R49 330
R54 330

R55 330

R412KR422KR43

2K

LED6

自动

LED7

化霜

LED8

定时

+5V

abcde

f

g

h

com1

com2

DIS1
WT4021BG

COM1 COM2 COM3

LED9

运行灯

1

2

3
4

5

CN6

FAN_IN

+12V-a

COM1

COM2

COM3SEG1

SEG2

SEG3

SEG4

SCL
SDA

T1

T2
CURRENT

AUTO_SELECT SW

STEP_I1

STEP_I2

STEP_I3
STEP_I4

FAN_IN
BUZ

COMP

VALVE

FAN_OUT

ZERO

FANSP

REC

HEAT

FRESH

RST

X2

X1

C25
104

+5V

IN40 07 *4

VSS0

1

VDD0

2

P25

3

P26

4

P00

5

P01

6

P02

7

P03

8

P04

9

VSS1

10

P05

11

P50

12

P51

13

P52

14

P53

15

AVDD

16

AVREF

17

AN10

18

AN11

19

AN12

20

AN1321AN14

22

AN15

23

AVSS

24

P10

25

P11

26

P30

27

P31

28

P32

29

P33

30

P20

31

VDD1

32

P21

33

P22

34

P23

35

P24

36

Vpp/ IC

37

XT2

38

XT1

39

RESET

40

X2

41

X1

42

IC4

UPD789 166

+5V

C26
104

JR1
10K

JR3 10K

JR2

10K

JR5 10K

JR4

10K

+5V

C16
102

C17
102

JR6
10K

JR8
10K

JR9
10K

+5V

R41
10K

R41
10K

R41
10K

+5V +5V

FRESH

R61
2K

Q11

9014

R62
1K

IC9

PC817

SW2

+12V-a +12V-b

R63

5.1K

Q12

9014

GNDB

+12V-b 1

2

CN16

C23
104

E10

2200uF/25V

D19

D18

D17

D16

Vin

1

GND

2

Vout

3

IC10 7812

+12V-b

E11

1000uF/16V

C24
104

C
D

IN40 07 *4

1

2

3

4

CN1

TRANS

GNDB

16

6.2 Wiring diagram

6.2.1 Cooling only

6.2.1.1 MSE-07CR, MSE-09CR MSE-12CR

1

2(N)

Y&G

BLUE

S

RED

C

BLACK

R

BLACK

COMPRESSOR

CAPACITOR

FAN
MOTOR

BLUE

RED

RED

RED

BLACK

Y&G

INDOOR UNIT

OUTDOOR UNIT

17

6.2.1.2 MSE-18CR

INDOOR UNIT

COMPRESSOR
CAPACITOR

COMPRESSOR

Y/G

WHITE

S

BLUE

R

C

OVERLOAD
RELAY

RED

OUTDOOR UNIT

CAPACITOR

FAN

FAN
MOTOR

BLUE

RED

BLACK

Y&G

BLACK

BLACK

18

6.2.2 Heating/cooling

6.2.2.1 MSE-07HR, MSE-09HR MSE-12HR

INDOOR UNIT
OUTDOOR UNIT

19

6.2.2.2 MSE-18HR

INDOOR UNIT

OUTDOOR UNIT

RED

BLACK

BLUE

BLACK

Y&G

COMPRESSOR

C

S

R

WHITE

BLUE

COMPRESSOR

CAPACITOR

FAN
MOTOR

RED

BLUE

FAN

CAPACITOR

BLACK

BLUE

4-WAY

Y/G

OVERLOAD
RELAY

20

7 Electronic function

7.1 Electric Control working environment

7.1.1 input voltage: 175~253V

7.1.2 Input power frequency:50Hz

7.1.3 Ambient temperature: -7°C~+45°C

7.1.4 Indoor fan normal working amp is less than 1A,

7.1.5 Outdoor fan. Normal working amp is less than 1.5A

7.1.6 Four-way valve normal working amp is less than 1A.

7.1.7 Swing motor: DC12V.

7.1.8 Compressor: single-phase power supply. Its normal working amp is less than 15A

7.2 Proper symbols and their meanings:
TA: Indoor ambient temperature
TE: Indoor evaporator temperature
TS: Setting temperature through the remote controller
I

3sec

: Self-protection amp of compressor, continue three seconds until turns off the compressor.

I

5MIN

: Self-protection amp of compressor, continue five minutes until turns off the compressor.

I

FAN

: Self-protection amp of outdoor fan/indoor fans when they change from higher wind to lower wind.

I

RESTORE

: Amp self-protection return value

TH

DEFROST

: High wind, defrosting temperature difference

TM

DEFROST

: Middle wind, defrosting temperature difference

TL

DEFROST

: Low wind, defrosting temperature difference
TE1: Anti-cold wind, from Fan Off to Breeze temperature
TE2: Anti-cold wind, from Breeze to Setting Fan Speed temperature
TE3: Anti-cold wind, from Setting Fan Speed to Breeze temperature
TE4: Anti-cold wind, from Breeze to Fan Off temperature
TE5: Evaporator low temperature protection entering temperature
TE6: Evaporator low temperature protection restoring temperature
TE7: Evaporator high temperature protection, compressor off temperature
TE8: Evaporator high temperature protection, fan off temperature
TE9: Evaporator high temperature protection, restoring temperature

7.3 Functions
Remote receiving
Testing and forced running
Position set for indoor unit wind vane
LED displaying and alarm
On or off Timer
Protection for the compressor
Current protection
High temperature protection of indoor heat exchanger at heating mode
Auto defrosting and heating recovery at heating mode
Anti cold air at heating mode
Anti frozen at cooling mode

21

7.4 Protection

7.4.1 3 minutes delay at restart for compressor.

7.4.2 Sensor protection at open circuit and breaking disconnection

7.4.3 Fan Speed is out of control. When Indoor Fan Speed is too high(higher than High Fan+300RPM)or
too low(lower than 400RPM), the unit stops and LED displays failure information and can’t returns to
normal operation automatically.

7.4.4 Cross Zero signal error warning. If there is no Cross Zero signals in 4 minutes, the unit stops and LED
displays failure information and can’t returns to normal operation automatically.

7.4.5 The current protection of the compressor

Condition Indoor fan Compressor Outdoor fan Remark

I< I

RESTORE

On On On

On On Off Heating mode I

RESTORE

<I< I

FAN

Low speed On On Cooling mode

I

FAN

<I<I

5MIN

Off Off After 5 Minutes

Current up

I

5MIN

<I< I

3SEC

Off Off After 3 Seconds

I

5MIN

<I< I

3SEC

Off Off After 3 Seconds

I

FAN

<I<I

5MIN

Off Off After 5 Minutes

On On Off Heating mode I

RESTORE

<I< I

FAN

Low speed On On Cooling mode

Current down

I< I

RESTORE

On On On

If compressor turns off for continuously 4 times due to current protection in 5 minutes from

Compressor On, the unit stops and LED displays failure information and can’t returns to normal
operation automatically.

7.5 Fan-only mode

Fan speed is high/mid/low/ Auto

7.6 Cooling mode

The 4-way valve is closed at cooling mode.
The action of the compressor and the outdoor fan:

Condition
T=Indoor T emp.
Ts=Setting Temp.

Compressor Outdoor fan

T> T s+1 On On Room temp. up
T<Ts+1 Off Off
T> T s On On Room temp. down
T<Ts Off Off

Auto fan at cooling mode:

Condition

T=Indoor T emp.-Setting Temp.

Indoor fan speed

T<4℃ Low
4℃<T<5℃ Med.

Room temp. up

T>5℃ High
T> 4℃ High
1<T<℃ 4℃ Med.

Room temp. down

T<1℃ Low

22

Anti-freezing control to indoor evaporator at cooling mode( T: evaporator temp. )

Condition
Temp. Time

Compressor Outdoor fan

T> TE6 On On

Evaporator Temp. up

T< TE6 >5 Minutes Of f Off
T> TE5 On On

Evaporator Temp. down

T< TE5 >5 Minutes Of f Off

7.7 Dehumidifying mode

7.7.1 The 4-way valve is off in dehumidifying mode

7.7.2 Compressor and Indoor Fan actions in dehumidifying mode

NO Conditions Indoor Fan Compressor and Outdoor Fan

1 TA ≥ TS+2

LOW
BREEZE

ON 6minutes
OFF 4minutes

2 TS ≤TA<TS+2

LOW
BREEZE

ON 5minutes
OFF 5minutes

3 TA < TS

LOW
BREEZE

ON 4minutes
OFF 6minutes

Repeat on and off cycle.

7.7.3 Low room temperature protection:

When room temperature decreases to below 10℃, compressor and outdoor fan will stop(indoor fan
is Breeze). Dehumidifying operation will be resumed when room temperature restores to over 13℃.

7.7.4 At dehumidifying mode, the anti-freezing function of the indoor heat exchanger is the same as that of
cooling mode.

7.7.5 At dehumidifying mode, the action of fans of indoor is the same as that of air-only mode.

7.8 Heating mode

7.8.1 Generally, the 4-way valve is open in heating mode, but it is closed in defrosting mode. 4-way valve
must delay 2 minutes compared with compressor if the compressor changed into non-heating mode
or turned off. 4-way valve doesn't delay in dehumidifying mode.

7.8.2 Generally, the outdoor fan is turned off with the on-off action of compressor in heating mode, except
for the defrosting mode or the end of defrost.

7.8.3 Action of compressor and outdoor fan motor at heating mode: compressor must run for 7 minutes
after starting and then judge temperature. Meanwhile other protections are still valid.

Condition Compressor Outdoor fan

T> Ts+3 Off Off Room temp. up
T<Ts+3 On On
T< Ts+2 On On Room temp. down
T>Ts+2 Off Off

7.8.4 Indoor Fan actions at heating mode

Indoor Fan can be set at HIGH/MID/LOW/AUTO by using a remote controller, but Anti-cold wind
function prevails.
Anti-cold wind control function at heating mode

Condition Indoor fan speed

23

T= Indoor exchanger temp.

T<TE1 Off
TE1<T<TE2 Breeze

Indoor exchanger temp. up

T>TE2 Setting fan speed
T> TE3 Setting fan speed
TE3<T<TE4 Breeze

Indoor exchanger temp. down

T<TE4 Off

7.8.5 Auto wind at heating mode

Condition

T=Indoor Temp.-Setting Temp.

Indoor fan speed

T<2℃ High Room temp. up
T>2℃ Med.
T> 0℃ Med. Room temp. down
T<0℃ High

7.8.6 Indoor evaporator high-temperature protection at heating mode

Condition

T= Indoor exchanger temp.

Compressor Outdoor fan

T<TE8 On On
TE8<T<TE7 On Off

Indoor exchanger temp. up

T>TE7 Off Off
T>TE9 Off Off Indoor exchanger temp. down
T<TE9 On On

7.8.7. The louver opens to Standard Angle ANGLHEAT when power is on for the first time

7.9 Defrosting operation (Available for heating only).

7.9.1 Defrosting condition: Defrosting starts when either of the following ①&②:

① A and B are satisfied:

A: The compressor keeps running for 40 minutes or more.
B: The temperature difference of evaporator and room temperature meets one of the following:

℃

Temp. of evaporator---room temp.

Fan speed is high ≤TH

DEFROST

Fan speed is mid ≤TM

DEFROST

Fan speed is low ≤TL

DEFROST

Breeze Meet only if it is Breeze

② Calculate from the end of latest defrost, evaporator high temp. protection only closes outdoor fan

with the compressor still running. Add up to 90 minutes.

7.9.2 Defrosting time

If the temp. difference condition ① is satisfied for less than 40 minutes, this can be regarded as
severe frosting. The defrosting time is 10 minutes.
If the temp. difference condition ② is satisfied for more than 40 minutes, the defrosting time is 6
minutes.

24

If the temp. difference condition ① is satisfied out of 40 minutes, generally the defrosting time is 6
minutes, after three continuous 6-minute defrost, the fourth should be 10 minutes defrost. The
circulation is as following:

→7.5-minute defrost → 7.5-minute defrost→7.5-minute defrost→10-minute defrost→

7.10 Ending condition of defrosting
If one of following conditions is satisfied, end the defrost and turn into heating mode:
A. The defrost time has reached to 7.5 or 10 minutes.
B. The compressor current has reached to I

DEFROST

or above, I

DEROST

differs in different models.

7.11 Defrosting Actions:

7.12 utomatic operation mode

7.12.1 The air conditioner automatically selects one of the following operation modes: cooling, heating or fan
only according to the temp. difference between room temp. (TA) and set temp. (TS).

TA—TS Operation mode
TA—TS>2℃ Cooling

-1 ≤TA℃ -TS≤+2℃ Fan-only
TA-TS<-1℃ Heating (air-only for cooling only type)

7.12.2 The indoor fan blows automatically in corresponding selected mode.

7.12.3 The motion of indoor fan’s blade should accord with the selected operation mode.

7.12.4 One mode should be carried out for at least 15 minutes once selected. If the compressor cannot
start for 15 minutes, reselect the operation mode according to the room temp. and set temp., or
reselect when the set temp. varies.

7.13 orced cooling function

7.13.1 Select forced cooling function with the forced cooling button or the switch.

7.13.2 The compressor is unconditionally turned on, after 30 minutes cooling operation whose fan mode is
set as low, the A/C operates at the DRY mode with a set temp. of 24℃.

Defrost 10or 6minutes

45S 25S
Compressor

4-way Valve 23S
40S
Outdoor Fan

Indoor Fan

10S

25

7.13.3 All protections of remote control cooling are available at forced cooling operation.

7.14 Forced Auto function

Select forced auto function with the forced auto button or the switch.
In forced auto status the A/C operates at remote control mode with a set temp. of 24℃.

7.15 Timer Function

7.16 Economic Running

7.16.1 The economic running function is available at cooling, heating or auto mode.

7.17 Cooling: The set temperature rise 1℃ per hour. Two hours later, the set temperature will maintain

as a constant and the fan speed is kept at low speed.

7.18 Heating: The set temperature decrease 1℃ per hour. Two hours later, the set temperature will

maintain as a constant and the air circulation is kept at low speed (Cold air proof function takes
precedence over all).

7.19 Auto: The economic running function operates in accordance with selected running mode by auto mode.

7.20 uto restart function: In case of a sudden power failure, this function automatically sets the unit to

previous settings before the power failure when power returns.

26

7.21 Models and Parameters

Model MSE-07CR MSE-07HR MSE-09CR MSE-09HR

I3SEC 8.5A 8.5A 10.0

A

10.0

A

I5MIN 6.5A 6.5A 7.5

A

7.5

A

IFAN 5.5A 5.5A 5.5

A

5.5

A

IRESTORE 4.5A 4.5A 4.5

A

4.5

A

IDEFROST 3.5A 3.5

A

TE1 28℃ 28℃
TE2 32℃ 32℃
TE3 30℃ 30℃
TE4 26℃ 26℃
TE5 4℃ 4℃ 4℃ 4℃
TE6 10℃ 10℃ 10℃ 10℃
TE7 60℃ 60℃
TE8 53℃ 53℃
TE9 50℃ 50℃

ANGLCOOL 88 88 88 88

ANGLHEAT 125 125

ANGLOFF 0 0 0° 0°
THDEFROST 15 17°C
TMDEFROST 16 18°C
TLDEFROST 17 19°C

27

Model MSE-12CR MSE-12HR MSE-18CR MSE-18HR
I3SEC 12.0A 12.0A 16.0A 16.0A

I5MIN 8.5A 8.5A 13.0A 13.0A

IFAN 7.5A 7.5A 11.0A 11.0A
IRESTORE 6.5A 6.5A 9.5A 9.5A
IDEFROST 5.0A 7.5A

TE1 34 34
TE2 37 36
TE3 33 30
TE4 22 20
TE5 4 4 3 3
TE6 10 10 14 14
TE7 63 60
TE8 53 52
TE9 52 50

ANGLCOOL 88 88 88 88

ANGLHEAT 125 125

ANGLOFF 0° 0° 0° 0°
THDEFROST 18 17°C
TMDEFROST 19 18°C

TLDEFROST 20 19°C

28

8.Troubleshooting

8.1 Display board

This indicator illuminates when the air conditioner is in AU TO operation.

AUTO indicator

DE FROST indicator (For Cooling & Heating models only)

This indicator illuminates when the air conditioner s tarts defrosting a utomatically or
when the warm air control feature is activated in heating operat ion.

1

22

3

4

5

1

22

3

4

Displays the temperature settings when the air conditioner is operat ional.

This indicator flashes after po wer is on and illuminates when the unit is in operation.

This indicator illuminates when T IMER is set ON/OFF

.

O P ERATION i n d i c ator

TIMER indicator

TEMPER ATUR E indicator

5

Signal receptor

8.2 For all heat pump model

r Extinguish

☆ Flash at 5Hz

Failure phenomenon Operation lamp Timer lamp
Indoor fan speed has been out of control for over 1 minute ☆ X
Indoor room temp. or evaporator sensor is open circuit or short circuit ☆ On
Over current protection of the compressor occurs 4 times X ☆
EEROM error On ☆
No over-zero signal ☆ ☆

29

8.3 Diagnostic Chart

8.3.1 After energizing, no indicator is lighted and the air conditioner can’t be operated.

Yes

Yes No

No Yes

Yes

No

8.3.2 Resetting phenomenon often occurs during operation. (That is automatically entering to the status when
power is on.)

The reason is that the instantaneous voltage of main chip is less than 4.5V. Check according to the following procedure:

Yes

No Yes

No

A

fter energizing, the air conditione

r

can’t be operated

Check if AC220V power supply outputs to Indoor PCB.

Check if AC220V exists at the primary coil of transformer.

Indoor PCB is defective

Check if AC14.5V exists at the secondary coil of transformer.

Take off the secondary plug of transformer, and then check i

f

A

C14.5V exists at the secondary coil of transformer.

The transformer is defective. Indoor PCB is defective

Resetting phenomenon often occurs during operation.

A

fter changing indoor fan motor, check if the failure releases.

Indoor PCB is defective

Power supply circuit has problems.

A

fter changing Indoor PCB, check if the failure releases.

30

8.3.3 Failure phenomenon

Failure phenomenon Operation lamp Timer lamp
Indoor fan speed has been out of control for over 1 minute ☆ X
Indoor room temp. or evaporator sensor is open circuit or short circuit ☆ On
Over current protection of the compressor occurs 4 times X ☆
EEROM error On ☆
No over-zero signal ☆ ☆

r Extinguish

☆ Flash at 5Hz

8.3.3.1 Operation lamp flashes and Timer lamp off.

8.3.3.2 Operation lamp flashes and Timer lamp on.

8.3.3.3 Operation lamp off and Timer lamp flashes

No Yes

Yes No

8.3.3.4 Operation lamp on and Timer lamp flashes
EEROM error, indoor PCB is defective.

8.3.3.5 Operation lamp flashes, Timer lamp flashes .

This is alarm signal when the main chip can’t detect over-zero signal. When such failure occurs, the main
control board must have fault.

Operation lamp off and Timer lamp flashes

Indoor PCB is defective

Power supply fault Outdoor unit fault (such as the compressor)

The voltage of power supply is too low (less than 187V)?

A

fter changing the main control board, check if the failure releases.

Is connector connection good?

Is voltage being applied to the fan motor?

Fan motor is defective

Repair the connector

Indoor PCB is defective

No Yes

Yes No

Is connection to connector good?

Replace the sensor

Repair connector

Yes

No

Yes

31

9. Characteristic of temp. sensor

Temp.℃ Resistance KΩ Temp.℃ Resistance KΩ Temp.℃ Resistance KΩ

-10 62.2756 17 14.6181 44 4.3874

-9 58.7079 18 13.918 45 4.2126

-8 56.3694 19 13.2631 46 4.0459

-7 52.2438 20 12.6431 47 3.8867

-6 49.3161 21 12.0561 48 3.7348

-5 46.5725 22 11.5 49 3.5896

-4 44 23 10.9731 50 3.451

-3 41.5878 24 10.4736 51 3.3185

-2 39.8239 25 10 52 3.1918

-1 37.1988 26 9.5507 53 3.0707
0 35.2024 27 9.1245 54 2.959
1 33.3269 28 8.7198 55 2.8442
2 31.5635 29 8.3357 56 2.7382
3 29.9058 30 7.9708 57 2.6368
4 28.3459 31 7.6241 58 2.5397
5 26.8778 32 7.2946 59 2.4468
6 25.4954 33 6.9814 60 2.3577
7 24.1932 34 6.6835 61 2.2725
8 22.5662 35 6.4002 62 2.1907
9 21.8094 36 6.1306 63 2.1124

10 20.7184 37 5.8736 64 2.0373
11 19.6891 38 5.6296 65 1.9653
12 18.7177 39 5.3969 66 1.8963
13 17.8005 40 5.1752 67 1.830
14 16.9341 41 4.9639 68 1.7665
15 16.1156 42 4.7625 69 1.7055
16 15.3418 43 4.5705 70 1.6469