Midea MSH-07CRN1 User guide

CONTENTS

1. DIAGNOSTIC CHART 1

2. The service rules of the R407C(R410a) product 5

3. BRIGHT STAR SERIES 8

4. BRIGHT ECO SERIES 45

5. GLORY (ECO)STAR SERIES 65

6. GLORY GIANT 1 97

7. GLORY GIANT 2 115

8. LIGHT STAR SERIES 127

9. CUTE STAR SERIES 139

10. Beta GLORY R407 157

11. AC INVERT SERIES 178

MULTI INVERTER ECO 197

12.

13. Multi-system 1 to 2 214

14. Multi-system 1 to 3 228

15. Alfa Glory H series

(R410A) 244

16. DC inverter(R410A) 276

17. F1 STAR SERIES 305

18. Alfa Glory H series 330

AFLA GLORY SERIES (R410A)

Contents

1. Features………………………………………………………………… 245

2. Specification………………………………………………………..……246

3. Dimensions…………………………………………………………..… 249

4. Refrigeration cycle diagram……………………………………………252

5. Pressure table…………….……………………………………….……253

6. Capacity table…………………………………………………………...256

7. Wiring diagram…………………………………………………..………261

8. Electronic function………………………………………….…………...265

9. Troubleshooting……………………………………………………….…273

10. Characteristic of temp. sensor…………………………………………278

1.Features

1.1 Compact design

1.2 High efficiency and quiet operation

1.3 A class energy level

245

2.Specification

-

~

-

~

-

~

-

~

-

~

-

~

Cooling

——

Heating

——

-

Compressor

Indoor fan motor

Indoor coil

*

Indoor unit

-

Outdoor fan motor

Outdoor coil

*

Outdoor unit

Refrigerant piping

-

~-

-

-~

~-

-

-~

~-

-

-~

-

’

’’'

★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.

246

3.Dimensions

3.1 Indoor unit MSH-07CRN1, MSH-07HRN1, MSH-09CRN1, MSH-09HRN1

3.2 Indoor unit MSH-12CRN1, MSH-12HRN1

247

3.4 Outdoor unit MSH-07CRN1, MSH-07HRN1

3.5 Outdoor unit MSH-09CRN1, MSH-09HRN1

248

3.6 Outdoor unit MSH-12CRN1, MSH-12HRN1

530

315

290

750

110

62

590

285

249

4.Refrigeration cycle diagram

250

5. Pressure table Note: *The pressure data is from 3 way valve, the pressure data are pressure above atmosphere. *D: Dry bulb temp. *W: Wet bulb temp.

5.1 MSH-07CRN1

Cooling mode Outdoor temperature (Dry bulb temp)

Indoor Conditions

Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

21ºC D

15ºC W

Pressure

( kg/cm2 )

6.2 6.8 7.2 8.0 8.5 9.5

24ºC D

17ºC W

Pressure

( kg/cm2 )

6.3 6.5 7.5 8.0 8.7 9.5

27ºC D

19ºC W

Pressure

( kg/cm2 )

6.1 6.9 7.7 8.2 9.1 10.0

32ºC D

23ºC W

Pressure

( kg/cm2 )

7.0 7.3 7.8 8.3 9.2 10.1

5.2 MSH-07HRN1

Cooling mode Outdoor temperature (Dry bulb temp)

Indoor

Conditions

Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

21ºC D

15ºC W

Pressure

( kg/cm2 )

6.2 6.8 7.2 8.0 8.5 9.5

24ºC D

17ºC W

Pressure

( kg/cm

2

)

6.3 6.5 7.5 8.0 8.7 9.5

27ºC D

19ºC W

Pressure

( kg/cm2 )

6.1 6.9 7.7 8.2 9.1 10.0

32ºC D

23ºC W

Pressure

( kg/cm2 )

7.0 7.3 7.8 8.3 9.2 10.1

Heating mode

OUTDOOR CONDITIONS

Indoor Conditions

Pressure

12ºC D

11ºC W

7ºC D

6ºC W

0ºC D

-1ºC W

-4ºC D

-6ºC W

-7ºC D

-9ºC W

-15ºC D

-xºC W

15ºC

Pressure

( kg/cm2 )

24.0 23.0 21.5 21.0 20..5 /

18ºC

Pressure

( kg/cm2 )

24.6 23.5 23.0 22.6 20.8 /

20ºC

Pressure

( kg/cm2 )

25.0 23.8 24.0 23.0 21.0 /

22ºC

Pressure

( kg/cm2 )

25.3 24.6 24.5 23.8 21.7 /

251

5.3 MSH-09CRN1

Cooling mode Outdoor temperature (Dry bulb temp)

Indoor Conditions

Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

21ºC D

15ºC W

Pressure

( kg/cm2 )

7.8 8.1 8.4 9.0 9.3 10.0

24ºC D

17ºC W

Pressure

( kg/cm2 )

7.9 8.2 8.7 9.0 9.5 10.1

27ºC D

19ºC W

Pressure

( kg/cm2 )

8.0 8.5 9.2 9.9 10.2 10.8

32ºC D

23ºC W

Pressure

( kg/cm2 )

8.8 9.1 9.2 10.0 10.5 11.2

5.4 MSH-09HRN1

Cooling mode Outdoor temperature (Dry bulb temp)

Indoor Conditions

Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

21ºC D

15ºC W

Pressure

( kg/cm2 )

7.8 8.1 8.4 9.0 9.3 10.0

24ºC D

17ºC W

Pressure

( kg/cm2 )

7.9 8.2 8.7 9.0 9.5 10.1

27ºC D

19ºC W

Pressure

( kg/cm2 )

8.0 8.5 9.2 9.9 10.2 10.8

32ºC D

23ºC W

Pressure

( kg/cm2 )

8.8 9.1 9.2 10.0 10.5 11.2

Heating mode

OUTDOOR CONDITIONS

Indoor Conditions

Pressure

12ºC D

11ºC W

7ºC D

6ºC W

0ºC D

-1ºC W

-4ºC D

-6ºC W

-7ºC D

-9ºC W

-15ºC D

-xºC W

15ºC

Pressure

(

kg/cm2 )

26.5 25.0 22.0 21.5 20.5 /

18ºC

Pressure

(

kg/cm2 )

27.0 26.0 23.5 22.5 20.8 /

20ºC

Pressure

(

kg/cm2 )

27.5 26.5 25.0 23.0 21.0 /

22ºC

Pressure

2

28.5 27.0 25.5 23.9 21.5 /

252

5.5 MSH-12CRN1

Cooling mode

Outdoor temperature (Dry bulb temp)

Indoor Conditions

Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

21ºC D

15ºC W

Pressure

( kg/cm

2

)

8.4 8.5 8.8 8.9 9.4 9.9

24ºC D

17ºC W

Pressure

( kg/cm

2

)

8.6 8.8 9.2 9.4 10.0 10.4

27ºC D

19ºC W

Pressure

( kg/cm

2

)

8.8 9.2 9.4 9.8 10.3 10.9

32ºC D

23ºC W

Pressure

( kg/cm

2

)

9.2 9.6 9.9 10.4 10.8 11.2

5.6 MSH-12HRN1

Cooling mode Outdoor temperature (Dry bulb temp)

Indoor Conditions

Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

21ºC D

15ºC W

Pressure

( kg/cm

2

)

8.4 8.5 8.8 8.9 9.4 9.9

24ºC D

17ºC W

Pressure

( kg/cm

2

)

8.6 8.8 9.2 9.4 10.0 10.4

27ºC D

19ºC W

Pressure

( kg/cm

2

)

8.8 9.2 9.4 9.8 10.3 10.9

32ºC D

23ºC W

Pressure

( kg/cm2 )

9.2 9.6 9.9 10.4 10.8 11.2

Heating mode

OUTDOOR CONDITIONS

Indoor Conditions

Pressure

12ºC D 11ºC W

7ºC D

6ºC W

0ºC D

-1ºC W

-4ºC D

-6ºC W

-7ºC D

-9ºC W

-15ºC D

-xºC W

15ºC

Pressure

(

kg/cm2 )

27.4 25.9 22.2 21.4 20.0 /

18ºC

Pressure

(

kg/cm2 )

29.8 27.2 23.8 22.0 21.1 /

20ºC

Pressure

(

kg/cm2 )

30.2 29.1 24.2 23.6 22.1 /

22ºC

Pressure

2

32.4 30.1 25.4 24.0 22.7 /

253

6. Capacity table

6.1 MSH-07CRN1

SUMMER OUTDOOR TEMPERATURE DRY

Indoor

Conditions

25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

Total capacity kW 2.06 1.95 1.75 1.51 1.58 1.41

Sensitive capacity kW 1.52 1.37 1.39 1.32 1.19 1.07

21ºC D

15ºC W

Input kW. 0.53 0.58 0.62 0.63 0.78 0.80

Total capacity kW 2.14 2.05 1.96 1.72 1.73 1.52

Sensitive capacity kW 1.61 1.46 1.45 1.54 1.23 1.15

24ºC D

17ºC W

Input kW. 0.60 0.60 0.66 0.65 0.78 0.83

Total capacity kW 2.31 2.24

2.10

1.90 1.73 1.67

Sensitive capacity kW 1.78 1.65

1.42

1.43 1.26 1.28

27ºC D

19ºC W

Input kW. 0.55 0.63

0.64

0.70 0.79 0.84

Total capacity kW 2.33 2.33 2.31 2.38 2.15 2.07

Sensitive capacity kW 1.83 1.67 1.65 1.64 1.57 1.53

32ºC D

23ºC W

Input kW. 0.53 0.65 0.69 0.73 0.83 0.88

6.2 MSH-07HRN1

SUMMER OUTDOOR TEMPERATURE DRY

Indoor

Conditions

25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

Total capacity kW 2.04 1.94 1.70 1.61 1.53 1.41

Sensitive capacity kW 1.52 1.41 1.39 1.32 1.19 1.07

21ºC D

15ºC W

Input kW. 0.53 0.58 0.60 0.67 0.73 0.80

Total capacity kW 2.14 2.05 1.93 1.81 1.73 1.51

Sensitive capacity kW 1.61 1.46 1.45 1.54 1.23 1.15

24ºC D

17ºC W

Input kW. 0.54 0.60 0.62 0.70 0.74 0.82

Total capacity kW 2.31 2.24

2.05

1.95 1.70 1.65

Sensitive capacity kW 1.78 1.65

1.54

1.43 1.26 1.28

27ºC D

19ºC W

Input kW. 0.57 0.62

0.64

0.71 0.75 0.83

Total capacity kW 2.33 2.36 2.31 2.25 2.15 2.03

Sensitive capacity kW 1.83 1.67 1.65 1.64 1.57 1.52

32ºC D

23ºC W

Input kW. 0.58 0.64 0.66 0.73 0.80 0.86

254

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 3.01 2.73 2.47 1.76 1.65 1.58

15ºC

Input kW. 0.76 0.66 0.60 0.58 0.50 0.45

Capacity kW 2.86 2.64 2.34 1.69 1.53 1.41

18ºC

Input kW. 0.78 0.67 0.62 0.59 0.62 0.47

Capacity kW 2.77

2.49

2.28 1.62 1.59 1.33

20ºC

Input kW. 0.81

0.69

0.64 0.59 0.53 0.48

Capacity kW 2.61 2.43 2.13 1.58 1.26 1.17

22ºC

Input kW. 0.83 0.68 0.65 0.60 0.56 0.51

6.3 MSH-09CRN1

SUMMER OUTDOOR TEMPERATURE DRY

Indoor

Conditions

25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

Total capacity kW 2.42 2.37 2.23 2.03 1.87 1.75

Sensitive capacity kW 1.72 1.69 1.65 1.53 1.43 1.36

21ºC D

15ºC W

Input kW. 0.72 0.75 0.80 0.84 0.89 0.96

Total capacity kW 0.65 2.55 2.45 2.24 2.11 1.98

Sensitive capacity kW 1.83 1.73 1.70 1.63 1.63 1.57

24ºC D

17ºC W

Input kW. 0.70 0.76 0.84 0.88 0.92 1.01

Total capacity kW 2.89 2.80

2.66

2.46 2.25 2.03

Sensitive capacity kW 1.95 1.91

1.83

1.78 1.66 1.63

27ºC D

19ºC W

Input kW. 0.65 0.78

0.82

0.91 0.95 1.02

Total capacity kW 3.01 2.98 2.92 2.83 2.69 2.45

Sensitive capacity kW 2.05 1.88 1.96 1.87 1.87 1.85

32ºC D

23ºC W

Input kW. 0.64 0.80 0.88 0.98 1.03 1.10

255

6.4 MSH-09HRN1

SUMMER OUTDOOR TEMPERATURE DRY

Indoor

Conditions

25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

Total capacity kW 2.42 2.41 2.24 2.03 1.87 1.75

Sensitive capacity kW 1.72 1.69 1.65 1.53 1.43 1.36

21ºC D

15ºC W

Input kW. 0.72 0.75 0.80 0.84 0.89 0.97

Total capacity kW 0.65 2.55 2.45 2.24 2.11 1.98

Sensitive capacity kW 1.83 1.73 1.70 1.63 1.63 1.57

24ºC D

17ºC W

Input kW. 0.68 0.76 0.81 0.88 0.93 1.02

Total capacity kW 2.89 2.80

2.63

2.45 2.23 2.05

Sensitive capacity kW 1.99 1.95

1.81

1.78 1.66 1.63

27ºC D

19ºC W

Input kW. 0.65 0.78

0.82

0.92 0.96 1.03

Total capacity kW 3.03 2.98 2.92 2.83 2.69 2.46

Sensitive capacity kW 2.05 1.88 1.96 1.87 1.87 1.85

32ºC D

23ºC W

Input kW. 0.65 0.80 0.86 0.95 0.99 1.08

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 3.75 3.38 3.02 1.97 1.59 1.52

15ºC

Input kW. 0.97 0.84 0.73 0.65 0.62 0.63

Capacity kW 3.52 3.26 2.94 1.84 1.60 1.49

18ºC

Input kW. 0.98 0.86 0.78 0.70 0.65 0.68

Capacity kW 3.45

3.22

2.85 1.82 1.56 1.50

20ºC

Input kW. 1.02

0.89

0.80 0.74 0.68 0.67

Capacity kW 3.18 3.13 2.72 1.73 1.58 1.42

22ºC

Input kW. 1.06 0.93 0.82 0.77 0.71 0.65

256

6.5 MSH-12CRN1

SUMMER OUTDOOR TEMPERATURE DRY

Indoor

Conditions

25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

Total capacity kW 3304 3198 3921 2856 2787 2684

Sensitive capacity kW 2607 2497 2411 2304 2242 2111

21ºC D

15ºC W

Input kW. 907 1006 1096 1184 1259 1457

Total capacity kW 3683 3511 3339 3166 3066 2960

Sensitive capacity kW 2938 2790 2745 2580 2470 2359

24ºC D

17ºC W

Input kW. 926 1035 1127 1230 1278 1380

Total capacity kW 3896 3718

3646

3387 3235 3232

Sensitive capacity kW 3076 2938

2856

2690 2580 2470

27ºC D

19ºC W

Input kW. 943 1058

1120

1265 1322 1437

Total capacity kW 4199 4009 3850 3614 3541 3370

Sensitive capacity kW 3098 2990 2745 2607 2552

32ºC D

23ºC W

Input kW. 977 1090 1190 1310 1368 1495

2900

6.6 MSH-12HRN1

SUMMER OUTDOOR TEMPERATURE DRY

Indoor

Conditions

25ºC 30ºC 35ºC 40ºC 45ºC 50ºC

Total capacity kW 3276 3187 3105 2821 2746 2621

Sensitive capacity kW 2567 2457 2413 2287 2210 2087

21ºC D

15ºC W

Input kW. 890 1010 1082 1188 1243 1337

Total capacity kW 3663 3503 3315 3148 3076 2932

Sensitive capacity kW 2918 2766 2725 2557 2453 2334

24ºC D

17ºC W

Input kW. 915 1033 1121 1228 1278 1367

Total capacity kW 3860 3700

3626

3371 3215 3125

Sensitive capacity kW 3039 2913

2832

2645 2567 2419

27ºC D

19ºC W

Input kW. 944 1048

1120

1253 1312 1426

Total capacity kW 4215 4100 3845 3601 3501 3313

Sensitive capacity kW 3120 2939 2891 2715 2589 2503

32ºC D

23ºC W

Input kW. 969 1088 1189 1302 1349 1455

257

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 4446 4264 4132 3838 3335 305

15ºC

Input kW. 1141 1106 1059 1035 895 812

Capacity kW 4380 4248 3954 3761 3258 2948

18ºC

Input kW. 1188 1153 1142 1082 953 918

Capacity kW 4261

4153

3877 3683 3189 2871

20ºC

Input kW. 1224

1180

1129 1082 976 941

Capacity kW 4106 3989 3761 3567 3045 2876

22ºC

Input kW. 1259 1212 1153 1106 1000 836

258

7. Schematic diagram and wiring diagram

7.1 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 78 05

E3

470uF/16V

E1

2200uF/25V

C4 104

D4

D3

D2

D1

Vin

1

GND

2

Vout

3

IC1 781 2

E2

1000uF/16V

C3 104

X1

4M

R7

1M

A0

1

A1

2

A2

3

GND

4

SDA

5

SCL

6

WC

7

VCC

8

IC2

24C04

C2

104

R2 10K

R1 10K

C5 104

R412K

1

2

3

IC5 KIA7 042

BUZ1 BUZZER1

R5 1K

R27 2K

Q3 9014

E4

10uF/16V

R8

8.1K/1%

C6

104

R10 2K

D6 IN4148

D5 IN4148

1

2

CN2

T1_roo m

E5 10uF/16V

R9

8.1K/1%

C7 104

R11 2K

D8

IN41 48

D7 IN41 48

1

2

CN3

T2_I.p ipe

CT1 0057h

D10 1N4148

R14

1.4K/1%

R6

1K/1%

R13 16K

E6

10uF/16V

D9 1N4148

R12 2K

C8

104

Q2

9014

R15 12K

C9 104

D11 1N4148

D12 1N4148

R16 12K

R17 12K

R18 10K

E7

10uF/16V

C10

102

R19 150

R20 1K

C11

104

R215.1K

D13 IN41 48

C12 103

+5V

1

2

3

CN4

FAN_BACK

REC

V

GND

REC1

RECEIVER_V

JR7 10K

C13 104

R23 2K

C14

1.2uF/450V

IC6 PC8 17

T1

T2

G

TR1

BT131

L2

?

C15 333

R242K

R26 1K

E9 470uF/25V

R28 11K/2W

Z1

12V

D15

IN4 007

R29 11K/2W

R25 51/1W

IN1

1

IN2

2

IN3

3

IN4

4

IN5

5

IN6

6

IN7

7

VSS

8

VDD

9

OUT7

10

OUT6

11

OUT5

12

OUT4

13

OUT3

14

OUT2

15

OUT1

16

IC7

UJN2003

C19 104

1

2

3

4

5

CN12

SWING

RY2 RELAY-SPST

D21

IN4148

R33 2K

Q5 9014

RY3 RELAY-SPST

D22

IN4 148

R34 2K

Q6 9014

RY4 RELAY-SPST

D23

IN4148

R35 2K

Q7 9014

RY5 RELAY-SPST

D24

IN4148

C20 333

R36 51/1W

RY6 COMP

C21 333

R37 51/1W

1

CN14

N

SE1

3.15A/250V

FUSE2

10A

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

Onl y For Hea t Pump

Dsa

1

Dsb

2

Q0

3

Q1

4

Q2

5

Q3

6

GND

7

CP

8

MR

9

Q4

10

Q5

11

Q6

12

Q7

13

Vcc

14

IC8

74HC164

R60 10K

R59

10K

C24

104

Q8

9012

Q9

9012

Q10

9012

R44

330

R45 330

R46 330

R47 330

R48 330

R49 330

R54 330

R55 330

R41 2K

R42 2K

R43 2K

LED6

自动

LED7

化霜

LED8

定时

+5V

a

b

c

d

e

f

g

h

com1

com2

DIS1 WT4021BG

LED9

运行灯

1

2

3

4

5

CN6

FAN_IN

C25 104

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

AN13

21

AN14

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

C26 104

JR1 10K

JR3 10K

JR2

10K

JR5 10K

JR4

10K

C16 102

C17 102

JR6 10K

JR8 10K

JR9 10K

R41 10K

+5V

R61 2K

Q11

9014

R62 1K

IC9

PC817

SW2

R63

5.1K

Q12

9014

1

2

CN16

C23 104

E10

2200uF/25V

D19

D18

D17

D16

Vin

1

GND

2

Vout

3

IC10 7812

E11

1000uF/16V

C24 104

IN40 07* 4

1

2

3

4

CN1

TRANS

+5V+12V-a

+5V

+12V

+5V

+12V-a

+5V

+12V-a

+5V

+12V-a

+5V

+12V-a +12V-b

GNDB

+12V-b

GNDB

SDA

SCL

RST

BUZ

T1_roo m

T2_I. pipe

Current

Curre nt

ZERO

A

B

A

REC

FANSP_FEEDBAC K

AUTO_SELECT

L1

N

FAN_IN '

FAN_IN

STEP_I2

STEP_I1

STEP_I3

STEP_I4

STEP_I2

STEP_I1

STEP_I3 STEP_I4

FAN_IN '

FAN_IN

BUZ '

COMP

COMP '

VALVE

FAN_OUT

HEAT

L(POWER_IN PORT)

LOAD_COMP

N

FU

L1

FRESH

LOAD_VALVE

LOAD_FAN OUT

LOAD_HEAT L

LOAD_HEAT N

SW_TEST

COM1

COM2

COM3SEG1

SEG2

SEG3

SEG4

SEG3

SEG4

COM1 COM2 COM3

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

FRESH

C D

259

7.2 Wiring diagram

7.2.1 Cooling only

7.2.1.1 MSH-07CRN1, MSH-09CRN1

12

34

5

1

2345

21 2

1

21 2

1

351 35

1

32

1

321

31

1

14

DISPLAY BOARD

CN 6 CN4 CN12 CN2

CN 3

CN11

RE D

BLUE

BL ACK

CN1

TR ANSF ORME R

CN5

P

O

WER

S

U

P

L

Y

IND

O

R

M

O

T

O

R

S

T

EP

MOTOR

ROOM TEMPERATURE

SENSOR

PIPE TEMPERATURE

SENSOR

JX1

INDOOR UNIT TO OUTDOOR UNIT

Y/G

1

2(N)

34

BROWN

Y/G

COM

P

RESSOR

REL

A

Y

CN15

8 7 6 5 4 3 21

4

CN7 CN16

21 2

1

21 21

SW2

WAT ER SWITCH

１　２（Ｎ）　

COMPRESSOR CAPACITOR

RE

Ｄ

OＵTＤOOR

Ｕ

Ｎ

IT

OＶERＬOAＤ

REＬA

Ｙ

Y＆G

COMPRESSOR

S

C

ＢＬＵ

E

R

Ｂ

ＬACＫ

RE

Ｄ

Ｂ

ＬACＫ

INDOOR UNIT

FAN CAPACITOR

RED

Y＆G

FAN

MOTOR

Y＆G

Ｂ

Ｌ

UE

Ｂ

ＬACＫ

RED

260

7.2.1.2 MSH-12CRN1

12

34

5

1

2345

21 2

1

21 2

1

351 35

1

32

1

321

31

1

14

DISPLAY BOARD

CN 6

CN4

CN12 CN2

CN 3

CN11

RE D

BLUE

BL ACK

CN1

TR ANSF ORME R

CN5

PO

WER

SU

PP LY

INDOOR MOTOR

STEP MOTOR

ROOM TEMPERATURE

SENSOR

PIPE TEMPERATURE

SENSOR

JX1

INDOOR UNIT TO OUTDOOR UNIT

Y/G

1

2(N)

34

BROWN

Y/G

COMPRESSOR RELAY

CN15

8 7 6 5 4 3 21

4

CN7 CN16

21 2

1

21 21

SW2

WAT ER SWITCH

261

7.2.2 Heating/cooling

7.2.2.1 MSH-07HRN1, MSH-09HRN1

12

34

5

1

2345

21 2

1

21 2

1

351 35

1

32

1

321

2

1

14

DISPLAY BOARD

CN 6

CN4

CN12 CN2

CN 3

CN11

RE D

BLUE

BL ACK

CN1

TR ANSF ORME R

CN5

PO

WER

SU

PP LY

INDOOR MOTOR

STEP MOTOR

ROOM TEMPERATURE

SENSOR

PIPE TEMPERATURE

SENSOR

JX1

INDOOR UNIT TO OUTDOOR UNIT

Y/G

1

2(N)

34

BROWN

Y/G

COMPRESSOR RELAY

CN15

8 7 6 5 4 3 21

4

CN7 CN16

21 2

1

21 21

SW2

WAT ER SWITCH

CN13

1 21

121

1

262

7.2.2.2 MSH-12HRN1

12

34

5

1

2345

21 2

1

21 2

1

351 35

1

32

1

321

2

1

14

DISPLAY BOARD

CN 6

CN4

CN12 CN2

CN 3

CN11

RE D

BLUE

BL ACK

CN1

TR ANSF ORME R

CN5

PO

WER

SU

PP LY

INDOOR MOTOR

STEP MOTOR

ROOM TEMPERATURE

SENSOR

PIPE TEMPERATURE

SENSOR

JX1

INDOOR UNIT TO OUTDOOR UNIT

Y/G

1

2(N)

34

BROWN

Y/G

COMPRESSOR RELAY

CN15

8 7 6 5 4 3 21

4

CN7 CN16

21 2

1

21 21

SW2

WAT ER SWITCH

CN13

1 21

121

1

263

8 Electronic function

8.1 Electric Control working environment

8.1.1 input voltage: 175~253V

8.1.2 Input power frequency:50Hz

8.1.3 Ambient temperature: -7°C~+43°C

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

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

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

8.1.7 Swing motor: DC12V.

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

8.2 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

8.3 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

264

8.4 Protection

8.4.1 3 minutes delay at restart for compressor.

8.4.2 Sensor protection at open circuit and breaking disconnection

8.4.3 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.

8.4.4 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.

8.4.5 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.

8.5 Fan-only mode

Fan speed is high/mid/low/ Auto

8.6 Cooling mode

The 4-way valve is closed at cooling mode.

The action of the compressor and the outdoor fan:

Condition T=Indoor Temp. Ts=Setting Temp.

Compressor Outdoor fan

T> Ts+1 On On Room temp. up

T<Ts+1 Off Off

T> Ts On On Room temp. down

T<Ts Off Off

Auto fan at cooling mode:

Condition

T=Indoor Temp.-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

265

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 Off Off

T> TE5 On On

Evaporator Temp. down

T< TE5 >5 Minutes Off Off

8.7 Dehumidifying mode

8.7.1 The 4-way valve is off in dehumidifying mode

8.7.2 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.

266

8.7.3 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℃.

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

of cooling mode.

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

8.8 Heating mode

8.8.1 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.

8.8.2 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.

8.8.3 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

8.8.4 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

T= Indoor exchanger temp.

Indoor fan speed

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

8.8.5 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

267

8.8.6 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

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

8.9 Defrosting operation (Available for heating only).

8.9.1 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.

8.9.2 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.

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→

8.9.3 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.

268

8.9.4 Defrosting Actions:

Defrost 10or 6minutes

45S 25S Compressor

4-way Valve 23S 40S Outdoor Fan

Indoor Fan

10S

8.10 Automatic operation mode

8.10.1 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)

8.10.2 The indoor fan blows automatically in corresponding selected mode.

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

8.10.4 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.

8.11 Forced cooling function

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

8.11.2 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℃.

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

8.12 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℃.

8.13 Timer Function

8.14 Economic Running

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

8.14.2 Cooling:

The set temperature rise 1℃ per hour. Two hours later, the set temperature will maintain as a

269

constant and the fan speed is kept at low speed.

8.14.3 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).

8.14.4 Auto:

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

8.15 Auto 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.

270

8.16 Models and Parameters

Model MSH-07CRN2 MSH-07HRN2 MSH-09CRN2 MSH-09HRN2 MSH-12CRN2 MSH-12HRN2

I3SEC 7.5A 7.5A 10.0

A

10.0

A

12.0A 12.0

A

I5MIN 6.2A 6.2A 7.5

A

7.5

A

8.5A 8.5

A

IFAN 5.2A 5.2A 5.5

A

5.5

A

7.5A 7.5

A

IRESTORE 4.2A 4.2A 4.5

A

4.5

A

6.5A 6.5

A

IDEFROST 3.2A 3.5

A

5.0

A

TE1 28℃ 28℃ 34℃

TE2 32℃ 32℃ 37℃

TE3 30℃ 30℃ 33℃

TE4 26℃ 26℃ 22℃

TE5 4℃ 4℃ 4℃ 4℃ 3℃ 3℃

TE6 10℃ 10℃ 10℃ 10℃ 10℃ 10℃

TE7 60℃ 60℃ 63℃

TE8 53℃ 53℃ 53℃

TE9 50℃ 50℃ 50℃

ANGLCOOL 200° 200° 200° 200° 155° 155°

ANGLHEAT 0° 0° 10°

ANGLOFF 124° 124° 124° 124° 124° 124°

TH

17°C 17°C 20°C

TM

18°C 18°C 23°C

TL

19°C 19°C 26°C

271

9.Troubleshooting

9.1 Display board

1

2

3

4

5

6

Infrared Signal Recei ver

1: AUTO indicator

2: TIMER indicator

3: PRE.-DEF. Indicator

4: OPERATION indicator

5: SLEEP indicator

9.2 For all heat pump model

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

272

Midea MSH-07CRN1 User guide

Specifications and Main Features

Frequently Asked Questions

User Manual