GD Midea Refrigeration Equipment Co.,Ltd
SPLIT TYPE, HEAT PUMP AIR CONDITIONERS
Technical & service manual 2005
Corona Series(7000-18000BTU) R410a Wall Mounted
[Models]
MSC-07CRN1
MSC-07HRN1
MSC-09CRN1
MSC-09HRN1
MSC-12CRN1
MSC-12HRN1
MSC-18CRN1
MSC-18HRN1
Corona Series (R410A)
Contents
1. Features………………………………………………………………… 02
2. Specification………………………………………………………..……03
3. Dimensions…………………………………………………………..… 05
4. Refrigeration cycle diagram……………………………………………09
5. Pressure table…………….……………………………………….……10
6. Capacity table…………………………………………………………...14
7. Wiring diagram…………………………………………………..………20
8. Electronic function………………………………………….…………...25
9. Troubleshooting……………………………………………………….…33
10. Characteristic of temp. sensor…………………………………………36
1
1.Features
1.1 Compact design
1.2 High efficiency and quiet operation
1.3 A class energy level
2
2.Specification
z
z
z
A
A
A
A
y
y
y
A
A
g
g
gInp
g
g
g
g
A16A16A
A
A
App
Model
Power supply Ph-V-Hz 1, 220-240V~, 50H
Capacity Btu/h 7000 7000 9000 9000
Cooling
Heating
Moisture Removal L/h 0.7 0.7 1.0 1.0
Max. input consumption W 850 1000 1000 1200
Max. current
Star ting current
Compressor
Indoor f an motor
Indoor air flow (Hi/Mi/Lo) m3/ h 450/400/350 450/400/350 500/430/370 500/430/370
Indoor noise level (Hi/Mi/Lo) dB(A) 35/32/30 35/32/30 37/34/31 37/34/31
Indoor unit
Outdoor fa n motor
Outdoor air flow m3/ h 1500 1500 1800 1800
Outdoor noise level dB(A) 49 49 50 50
Outdoor unit
Refrigerant type R410A
Design pressure MPa 4.2 4.2 4.2 4.2
Refrigerant piping
Conne ctio n wiring No No No No
Plug type 16
Thermostat type Electrolic control Electrolic control Electrolic control Electrolic control
Operation temp
mbient temp
lication area m2 10-14 10-14 14-21 14-21
Qty’per 20’ /40’ /40'HQ set 126/272/298 126/272/298 113/238/274 113/238/274
Input W 640 640 820 820
Rate d curre nt
EER Btu/w.h, w/w 11,3.2 11,3.2 11,3.2 11,3.2
Capacity Btu/h 8500 11000
Input W 690 890
Rate d curre nt
COP W/W 3.6 3.6
Model PA82X1C-4DZDE PA82X1C-4DZDE PA108X1C-4FTDE PA108X1C-4FTDE
Type Rotar
Brand
Capacity Btu/h 7000 7000 9000 9000
Input W 730 730 920 920
Rate d current(RLA)
Locked rotor Amp(LRA)
Thermal protector MRA13408-9087 MRA13408-9087 MRA13430-9087 MRA13430-9087
Capacitor uF 25 25 25 25
Refrigerant oil ml 300 300 330 330
Model RPG13H RPG13H RPG13H RPG13H
Brand Welli n
ut W 36.5 36.5 39.5 39.5
Capacitor uF 1.2 1.2 1.2 1.2
Speed(hi/mi /lo) r/min 1050/920/820 1050/920/820 1200/950/850 1200/950/850
Dimension (W*H*D) mm
Packing (W*H*D) mm
Net/Gro ss weight Kg 8/10 8/10 8/10 8/10
Model YDK24-6T YDK24-6T YDK24-6F YDK24-6F
Brand Welli n
Input W 56 56 56 56
Capacitor uF 2.5 2.5 2.5 2.5
Speed r/min 800 800 800 800
Dimension(W*H*D) mm 700X535X235 700X535X235 780X540X250 780X540X250
Packing (W*H*D) mm 815X580X325 815X580X325 910X575X335 910X575X335
Net/Gro ss weight Kg 31/34 32/35 36/39 37/40
Liquid side/ Gas side mm(inch)
Max. refrigerant pipe length m 10 10 10 10
Max. difference in level m 5 5 5 5
2.8 2.8 3.6 3.6
3.0 3.9
3.8 4.5 4.5 5.3
3.3 3.3 4.1 4.1
16.0 16.0 18.7 18.7
800 820 900 920
℃
℃ 18~-45 -7 -~ 45 18~-45 -7 -~ 45
MSC- 07CRN1 MSC-07HRN1 MSC- 09CRN1 MSC-09HRN1
1, 220-240V~, 50H
Rotar
TOSHIBA TOSHIBA TOSHIBA TOSHIBA
Welli n
710×250×190 710×250×190 710×250×195 710×250×195
800×340×270 800×340×270 800×340×270 800×340×270
Welli n
Ф6.35/Ф9.53 Ф6.35/Ф9.53 Ф6.35/Ф9.53 Ф6.35/Ф9.53
17-30 17-30 17-30 17-30
1, 220-240V~, 50Hz 1, 220-240V~, 50H
Rotary Rotar
Welli ng We llin
Welli ng We llin
16
★1 The noise date is base on hemi-anechoic chamber, during actual operation, these values are norm ally somewhat different as a result of ambient
condition.
3
Model
R
N
z
z
A
A
A
y
yRotary
y
A
A
g
g
gInp
V
g
g
gInp
g
A16A
A
App
Power supply Ph-V-Hz 1, 220-240V~, 50H
Capacity Btu/h 12000 12000 18000 18000
Cooling
Heating
Moisture Removal L/h 1.2 1.2 1.6 1.6
Max. input consumption W 1550 1550 2500 2500
Max. current
Star ting current
Compressor
Indoor f an motor
Indoor air flow (Hi/Mi/Lo) m3/ h 580/500/420 600/520/420 850/700/600 850/700/600
Indoor noise level (Hi/Mi/Lo) dB(A) 40/37/34 40/37/34 42/39/37 42/39/37
Indoor unit
Outdoor fa n motor
Outdoor air flow m3/ h 1800 1800 2500 2500
Outdoor noise level dB(A) 50 50 52 52
Outdoor unit
Refrigerant type R410A
Design pressure MPa 4.2 4.2 3.8 3.8
Refrigerant piping
Conne ctio n wiring No No No No
Plug type 16
Thermostat type Electrolic control Electrolic control Electronic control Electronic control
Operation temp
mbient temp
lication area m2 18-26 18-26 28~40 28~40
Qty’per 20’ /40’ /40'HQ set 94/199/232 94/199/232 70 / 148 / 170 70 / 148 / 170
Input W 1120 1120 1720 1720
Rate d curre nt
EER Btu/w.h, w/w 11,3.2 11,3.2 10.5,3.1 10.5,3.1
Capacity
Input
Rate d curre nt
COP
Model PA140X2C-4FT PA140X2C-4FT
Type rotar
Brand
Capacity Btu/h 12000 12000 16910 16910
Input W 1200 1200 1720 1720
Rate d current(RLA)
Locked rotor Amp(LRA)
Thermal protector
Capacitor uF 35 35 45 45
Refrigerant oil ml 480 480 ESTER OIL VG74 ·750 ESTER OIL VG74 ·750
Model RPG13D RPG13D RPG28D RPG28D
Brand We llin
ut W 44 44 53 53
Capacitor uF 1.2 1.2 1.5uF/450V 1.5uF/450
Speed(hi/mi /lo) r/min 1220/1000/800 1220/1000/800 1180/1080/800 1180/1080/800
Dimension (W*H*D) mm 790×265×193 790×265×193 920×292×225 1000×353×280
Packing (W*H*D) mm 875x285x375 875x285x375 1015×368×295 1015×368×295
Net/Gro ss weight Kg 9.0/11.5 9/11 13/15 13/15
Model YDK24-6F YDK24-6F YDK53-6K YDK53-6K
Brand Wellin
ut W 56 56 125 125
Capacitor uF 2.5 2.5 3.5 3.5
Speed r/min 800 800 800 800
Dimension(W*H*D) mm 780X540X250 780X540X250 845X695X335 845X695X335
Packing (W*H*D) mm 910X575X335 910X575X335 970X770X395 970X770X395
Net/Gro ss weight Kg 37/40 38/41 52/56 52/56
Liquid side/ Gas side mm(inch)
Max. refrigerant pipe length m 10 10 15 15
Max. difference in level m 5 5 8 8
5.0 5.0 7.8 7.8
10 10 11. 5 11. 5
30 30 42.5 42.5
5.4 5.4 7.50 7.50
29.9 29.9 34.5 34.5
1050 1080 1690 1740
℃
℃ 18~-45 -7 -~ 45
MSC- 12CRN1 MSC-12HRN1 MSC-18CRN1 MSC-18H
1, 220-240V~, 50H
15000 19000
1180 1650
5.3 8.0
3.6 3.4
rotar
TOSHIBA TOSHIBA Toshi ba Tosh iba
UP3RE0591-T56 UP3RE0591-T56 Internal In ternal
Welli n
Welli n
Ф6.35/Ф12.7 Ф6.35/Ф12.7 Ф6.35/Ф12.7 Ф6.35/Ф12.7
17-30 17-30 17-30 17-30
1, 220-240V~,50Hz 1, 220-240V~, 50Hz
PA200X2CS-4KU1 PA 200X2CS-4KU1
Rotar
Welling Welli n
Welling Welli n
NO PLUG NO PLUG
18-45 -7~45
1
★1 The noise date is base on hemi-anechoic chamber, during actual operation, these values are norm ally somewhat different as a result of ambient
condition.
4
3.Dimensions
3.1 Indoor unit
MSC-07CRN1, MSC-07HRN1, MSC-09CRN1, MSC-09HRN1
3.2 Indoor unit
MSC-12CRN1, MSC-12HRN1
5
3.2 Indoor unit
MSC-18CRN1, MSC-18HRN1
6
3.4 Outdoor unit
MSC-07CRN1, MSC-07HRN1
3.5 Outdoor unit
MSC-09CRN1, MSC-09HRN1, MSC-12CRN1, MSC-12HRN1
7
MSC-18CRN1, MSC-18HRN1
12.5
8
4.Refrigeration cycle diagram
9
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 MSC-07CRN1
Cooling mode Outdoor temperature (Dry bulb temp)
Indoor Conditions
Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
21ºC D
15ºC W
24ºC D
17ºC W
27ºC D
19ºC W
32ºC D
23ºC W
Pressure
( kg/cm
Pressure
( kg/cm
Pressure
( kg/cm
Pressure
( kg/cm
2
)
2
)
2
)
2
)
6.2 6.7 7.2 8.0 8.5 9.4
6.3 6.5 7.5 8.1 8.7 9.5
6.1 6.8 7.7 8.2 9.0 10.0
7.0 7.3 7.8 8.4 9.2 10.1
.2 MSC-07HRN1
Cooling mode Outdoor temperature (Dry bulb temp)
Indoor
Conditions
21ºC D
15ºC W
24ºC D
17ºC W
Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
Pressure
( kg/cm
Pressure
( kg/cm
2
)
2
)
6.2 6.7 7.2 8.0 8.5 9.4
6.3 6.5 7.5 8.1 8.7 9.5
27ºC D
19ºC W
32ºC D
23ºC W
Pressure
( kg/cm
Pressure
( kg/cm
2
)
2
)
6.1 6.8 7.7 8.2 9.0 10.0
7.0 7.3 7.8 8.4 9.2 10.1
Heating mode
)
)
)
)
12ºC D
11ºC W
24.0 23.0 21.5 21.0 20..5 /
24.6 23.5 23.0 22.6 20.8 /
25.0 24.2 24.0 23.0 21.0 /
25.3 24.6 24.5 23.8 21.7 /
Indoor Conditions
15ºC
18ºC
20ºC
22ºC
10
Pressure
Pressure
( kg/cm
Pressure
( kg/cm
Pressure
( kg/cm
Pressure
( kg/cm
2
2
2
2
7ºC D
6ºC W
OUTDOOR CONDITIONS
0ºC D
-1ºC W
-4ºC D
-6ºC W
-7ºC D
-9ºC W
-15ºC D
-xºC W
(
5.3 MSC-09CRN1
Cooling mode Outdoor temperature (Dry bulb temp)
Indoor Conditions
Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
21ºC D
15ºC W
24ºC D
17ºC W
27ºC D
19ºC W
32ºC D
23ºC W
Pressure
( kg/cm
Pressure
( kg/cm
Pressure
( kg/cm
Pressure
( kg/cm
2
)
2
)
2
)
2
)
7.8 8.1 8.4 9.0 9.3 10.0
7.9 8.2 8.7 9.0 9.5 10.1
8.0 8.5 9.2 9.9 10.2 10.8
8.8 9.1 9.2 10.0 10.5 11.2
5.4 MSC-09HRN1
Cooling mode Outdoor temperature (Dry bulb temp)
Indoor Conditions
21ºC D
15ºC W
24ºC D
17ºC W
Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
Pressure
( kg/cm
Pressure
( kg/cm
2
)
2
)
7.8 8.1 8.4 9.0 9.3 10.0
7.9 8.2 8.7 9.0 9.5 10.1
27ºC D
19ºC W
32ºC D
23ºC W
Heating mode
Indoor Conditions
15ºC
18ºC
20ºC
22ºC
Pressure
( kg/cm
Pressure
( kg/cm
2
2
Pressure
Pressure
( kg/cm
2
Pressure
( kg/cm
2
Pressure
( kg/cm
2
Pressure
kg/cm2 )
)
)
)
)
)
8.0 8.5 9.2 9.9 10.2 10.8
8.8 9.1 9.2 10.0 10.5 11.2
OUTDOOR CONDITIONS
12ºC D
11ºC W
7ºC D
6ºC W
0ºC D
-1ºC W
-4ºC D
-6ºC W
-7ºC D
-9ºC W
-15ºC D
-xºC W
26.5 25.0 22.0 21.5 20.5 /
27.0 26.0 23.5 22.5 20.8 /
27.5 26.5 25.0 23.0 21.0 /
28.5 27.0 25.5 23.9 21.5 /
11
(
5.5 MSC-12CRN1
Cooling mode
Indoor Conditions
Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
Outdoor temperature (Dry bulb temp)
21ºC D
15ºC W
24ºC D
17ºC W
27ºC D
19ºC W
32ºC D
23ºC W
Pressure
( kg/cm
Pressure
( kg/cm
Pressure
( kg/cm
Pressure
( kg/cm
2
)
2
)
2
)
2
)
8.4 8.5 8.8 8.9 9.4 9.9
8.6 8.8 9.2 9.4 10.0 10.4
8.8 9.2 9.4 9.8 10.3 10.9
9.2 9.6 9.9 10.4 10.8 11.2
5.6 MSC-12HRN1
Cooling mode Outdoor temperature (Dry bulb temp)
Indoor Conditions
21ºC D
15ºC W
24ºC D
17ºC W
Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
Pressure
( kg/cm
Pressure
( kg/cm
2
)
2
)
8.4 8.5 8.8 8.9 9.4 9.9
8.6 8.8 9.2 9.4 10.0 10.4
27ºC D
19ºC W
32ºC D
23ºC W
Heating mode
Indoor Conditions
15ºC
18ºC
20ºC
22ºC
Pressure
( kg/cm
2
Pressure
( kg/cm
2
Pressure
Pressure
( kg/cm
2
Pressure
( kg/cm
2
Pressure
( kg/cm
2
Pressure
kg/cm2 )
)
)
)
)
)
8.8 9.2 9.4 9.8 10.3 10.9
9.2 9.6 9.9 10.4 10.8 11.2
OUTDOOR CONDITIONS
12ºC D
11ºC W
7ºC D
6ºC W
0ºC D
-1ºC W
-4ºC D
-6ºC W
-7ºC D
-9ºC W
-15ºC D
-xºC W
27.4 25.9 22.2 21.4 20.0 /
29.8 27.2 23.8 22.0 21.1 /
30.2 29.1 24.2 23.6 22.1 /
32.4 30.1 25.4 24.0 22.7 /
12
5.7 MSC-18CRN1
(
Cooling mode
Indoor Conditions
Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
Outdoor temperature (Dry bulb temp)
21ºC D
15ºC W
( kg/cm
24ºC D
17ºC W
( kg/cm
27ºC D
19ºC W
( kg/cm
32ºC D
23ºC W
( kg/cm
5.8 MSC-18HRN1
Cooling mode
Indoor Conditions
21ºC D
15ºC W
24ºC D
17ºC W
Pressure 25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
( kg/cm
( kg/cm
Pressure
2
Pressure
2
Pressure
2
Pressure
2
Pressure
2
Pressure
2
)
)
)
)
)
)
8.5 8.6 8.9 9.0 9.4 9.9
8.7 8.9 9.3 9.5 10.0 10.5
8.9 9.2 9.5 9.9 10.4 10.9
9.3 9.7 9.9 10.5 10.9 11.3
Outdoor temperature (Dry bulb temp)
8.5 8.6 8.9 9.0 9.4 9.9
8.7 8.9 9.3 9.5 10.0 10.5
27ºC D
19ºC W
32ºC D
23ºC W
Pressure
( kg/cm
Pressure
( kg/cm
2
)
2
)
8.9 9.2 9.5 9.9 10.4 10.9
9.3 9.7 9.9 10.5 10.9 11.3
Heating mode
Indoor Conditions
15ºC
18ºC
20ºC
22ºC
Pressure
Pressure
( kg/cm
2
Pressure
( kg/cm
2
Pressure
( kg/cm
2
Pressure
12ºC D
11ºC W
28.2 27.0 21.4 20.6 20.2 /
)
30.6 28.2 24.6 22.8 22.1 /
)
31.2 29.9 25.2 24.6 23.1 /
)
33.3 31.1 26.2 25.2 23.8 /
7ºC D
6ºC W
kg/cm2 )
13
OUTDOOR CONDITIONS
0ºC D
-1ºC W
-4ºC D
-6ºC W
-7ºC D
-9ºC W
-15ºC D
-xºC W
6. Capacity table
6.1 MSC-07CRN1
SUMMER OUTDOOR TEMPERATURE DRY
Indoor
Conditions
21ºC D
15ºC W
24ºC D
17ºC W
27ºC D
19ºC W
32ºC D
23ºC W
Total capacity kW 2.04 1.94 1.7 1.61 1.53 1.41
Sensitive capacity kW 1.52 1.41 1.39 1.32 1.19 1.07
Input kW. 0.53 0.58 0.6 0.67 0.73 0.8
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
Input kW. 0.54 0.6 0.62 0.7 0.74 0.82
Total capacity kW 2.31 2.24 2.1 1.95 1.7 1.65
Sensitive capacity kW 1.78 1.65 1.56 1.43 1.26 1.28
Input kW. 0.57 0.62
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
Input kW. 0.58 0.64 0.66 0.73 0.8 0.86
25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
0.64 0.71 0.75 0.83
6.2 MSC-07HRN1
SUMMER OUTDOOR TEMPERATURE DRY
Indoor
Conditions
21ºC D
15ºC W
24ºC D
17ºC W
27ºC D
19ºC W
32ºC D
23ºC W
Total capacity kW 2.04 1.94 1.7 1.61 1.53 1.41
Sensitive capacity kW 1.52 1.41 1.39 1.32 1.19 1.07
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
Total capacity kW 2.31 2.24 2.1 1.95 1.7 1.65
Sensitive capacity kW 1.78 1.65 1.56 1.43 1.26 1.28
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
25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
Input kW. 0.53 0.58 0.6 0.67 0.73 0.8
Input kW. 0.54 0.6 0.62 0.7 0.74 0.82
Input kW. 0.57 0.62
Input kW. 0.58 0.64 0.66 0.73 0.8 0.86
0.64 0.71 0.75 0.83
14
WINTER OUTDOOR CONDITIONS
Indoor
Conditions
15ºC
18ºC
20ºC
22ºC
Capacity kW 3.01 2.73 2.47 1.76 1.65 1.58
Input kW. 0.76 0.66 0.6 0.58 0.5 0.45
Capacity kW 2.86 2.64 2.34 1.69 1.53 1.41
Input kW. 0.78 0.67 0.62 0.59 0.62 0.47
Capacity kW 2.77 2.3 2.22 1.62 1.59 1.33
Input kW. 0.81
Capacity kW 2.61 2.23 2.13 1.58 1.26 1.17
Input kW. 0.83 0.68 0.65 0.6 0.56 0.51
12ºC D
11ºC W
7ºC D
6ºC W
0.65 0.64 0.59 0.53 0.48
4ºC D
3ºC W
0ºC D
-1ºC W
-4ºC D
-6ºC W
-7ºC D
-8ºC W
6.3 MSC-09CRN1
SUMMER OUTDOOR TEMPERATURE DRY
Indoor
Conditions
25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
21ºC D
15ºC W
24ºC D
17ºC W
27ºC D
19ºC W
32ºC D
23ºC W
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
Input kW. 0.72 0.75 0.8 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 1.7 1.63 1.63 1.57
Input kW. 0.68 0.76 0.81 0.88 0.93 1.02
Total capacity kW 2.89 2.8 2.6 2.45 2.23 2.05
Sensitive capacity kW 1.99 1.95 1.81 1.78 1.66 1.63
Input kW. 0.65 0.78
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
Input kW. 0.65 0.8 0.86 0.95 0.99 1.08
0.82 0.92 0.96 1.03
15
6.4 MSC-09HRN1
SUMMER OUTDOOR TEMPERATURE DRY
Indoor
Conditions
21ºC D
15ºC W
24ºC D
17ºC W
27ºC D
19ºC W
32ºC D
23ºC W
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
Total capacity kW 0.65 2.55 2.45 2.24 2.11 1.98
Sensitive capacity kW 1.83 1.73 1.7 1.63 1.63 1.57
Total capacity kW 2.89 2.8 2.6 2.45 2.23 2.05
Sensitive capacity kW 1.99 1.95 1.81 1.78 1.66 1.63
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
WINTER OUTDOOR CONDITIONS
Indoor
Conditions
15ºC
18ºC
20ºC
22ºC
25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
Input kW. 0.72 0.75 0.8 0.84 0.89 0.97
Input kW. 0.68 0.76 0.81 0.88 0.93 1.02
Input kW. 0.65 0.78
Input kW. 0.65 0.8 0.86 0.95 0.99 1.08
Capacity kW 3.75 3.38 3.02 1.97 1.59 1.52
Input kW. 0.97 0.84 0.73 0.65 0.62 0.63
Capacity kW 3.52 3.26 2.94 1.84 1.6 1.49
Input kW. 0.98 0.86 0.78 0.7 0.65 0.68
Capacity kW 3.4 3 2.85 1.82 1.56 1.5
Input kW. 1.02
Capacity kW 3.11 2.93 2.72 1.73 1.58 1.42
Input kW. 1.06 0.93 0.82 0.77 0.71 0.65
12ºC D
11ºC W
7ºC D
6ºC W
0.82 0.8 0.74 0.68 0.67
0.82 0.92 0.96 1.03
4ºC D
3ºC W
0ºC D
-1ºC W
-4ºC D
-6ºC W
-7ºC D
-8ºC W
16
6.5 MSC-12CRN1
SUMMER OUTDOOR TEMPERATURE DRY
Indoor
Conditions
21ºC D
15ºC W
24ºC D
17ºC W
27ºC D
19ºC W
32ºC D
23ºC W
Total capacity kW 3.276 3.187 3.105 2.821 2.746 2.621
Sensitive capacity kW 2.567 2.457 2.413 2.287 2.21 2.087
Total capacity kW 3.663 3.503 3.315 3.148 3.076 2.932
Sensitive capacity kW 2.918 2.766 2.725 2.557 2.453 2.334
Total capacity kW 3.86 3.7 3.5 3.371 3.215 3.125
Sensitive capacity kW 3.039 2.913 2.832 2.645 2.567 2.419
Total capacity kW 4.215 4.1 3.845 3.601 3.501 3.313
Sensitive capacity kW 3.12 2.939 2.891 2.715 2.589 2.503
25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
Input kW. 0.89 1.01 1.082 1.188 1.243 1.337
Input kW. 0.915 1.033 1.121 1.228 1.278 1.367
Input kW. 0.944 1.048
Input kW. 0.969 1.088 1.189 1.302 1.349 1.455
1.1 1.253 1.312 1.426
6.6 MSC-12HRN1
SUMMER OUTDOOR TEMPERATURE DRY
Indoor
Conditions
21ºC D
15ºC W
24ºC D
17ºC W
27ºC D
19ºC W
32ºC D
23ºC W
Total capacity kW 3.276 3.187 3.105 2.821 2.746 2.621
Sensitive capacity kW 2.567 2.457 2.413 2.287 2.21 2.087
Total capacity kW 3.663 3.503 3.315 3.148 3.076 2.932
Sensitive capacity kW 2.918 2.766 2.725 2.557 2.453 2.334
Total capacity kW 3.86 3.7 3.5 3.371 3.215 3.125
Sensitive capacity kW 3.039 2.913 2.832 2.645 2.567 2.419
Total capacity kW 4.215 4.1 3.845 3.601 3.501 3.313
Sensitive capacity kW 3.12 2.939 2.891 2.715 2.589 2.503
25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
Input kW. 0.89 1.01 1.082 1.188 1.243 1.337
Input kW. 0.915 1.033 1.121 1.228 1.278 1.367
Input kW. 0.944 1.048
Input kW. 0.969 1.088 1.189 1.302 1.349 1.455
1.1 1.253 1.312 1.426
17
WINTER OUTDOOR CONDITIONS
Indoor
Conditions
15ºC
18ºC
20ºC
22ºC
Capacity kW 4.446 4.264 4.132 3.838 3.335 3.305
Input kW. 1.141 1.106 1.059 1.035 0.895 0.812
Capacity kW 4.38 4.248 3.954 3.761 3.258 2.948
Input kW. 1.188 1.153 1.142 1.082 0.953 0.918
Capacity kW 4.261 4.1 3.877 3.683 3.189 2.871
Input kW. 1.224
Capacity kW 4.106 3.989 3.761 3.567 3.045 2.876
Input kW. 1.259 1.212 1.153 1.106 1 0.836
12ºC D
11ºC W
7ºC D
6ºC W
1.14 1.129 1.082 0.976 0.941
4ºC D
3ºC W
0ºC D
-1ºC W
-4ºC D
-6ºC W
-7ºC D
-8ºC W
6.7 MSC-18CRN1
SUMMER OUTDOOR TEMPERATURE DRY
Indoor
Conditions
25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
21ºC D
15ºC W
24ºC D
17ºC W
27ºC D
19ºC W
32ºC D
23ºC W
Total capacity kW
Sensitive capacity kW
Input kW.
Total capacity kW
Sensitive capacity kW
Input kW.
Total capacity kW
Sensitive capacity kW
Input kW.
Total capacity kW
Sensitive capacity kW
Input kW.
4.914 4.781 4.658 4.232 4.119 3.932
3.851 3.686 3.620 3.431 3.315 3.131
1.335 1.515 1.623 1.782 1.865 2.006
5.495 5.255 4.973 4.722 4.614 4.398
4.377 4.149 4.088 3.836 3.680 3.501
1.373 1.550 1.682 1.842 1.917 2.051
5.790 5.550 5.250 5.057 4.823 4.688
4.559 4.370 4.248 3.968 3.851 3.629
1.416 1.572 1.720 1.880 1.968 2.139
6.323 6.150 5.768 5.402 5.252 4.970
4.680 4.409 4.337 4.073 3.884 3.755
1.454 1.632 1.824 1.953 2.024 2.183
18
6.8 MSC-18HRN1
SUMMER OUTDOOR TEMPERATURE DRY
Indoor
Conditions
21ºC D
15ºC W
24ºC D
17ºC W
27ºC D
19ºC W
32ºC D
23ºC W
Total capacity kW
Sensitive capacity kW
Total capacity kW
Sensitive capacity kW
Total capacity kW
Sensitive capacity kW
Total capacity kW
Sensitive capacity kW
WINTER OUTDOOR CONDITIONS
Indoor
Conditions
15ºC
18ºC
20ºC
22ºC
25ºC 30ºC 35ºC 40ºC 45ºC 50ºC
4.914 4.781 4.658 4.232 4.119 3.932
3.851 3.686 3.620 3.431 3.315 3.131
Input kW.
1.335 1.515 1.623 1.782 1.865 2.006
5.495 5.255 4.973 4.722 4.614 4.398
4.377 4.149 4.088 3.836 3.680 3.501
Input kW.
1.373 1.550 1.682 1.842 1.917 2.051
5.790 5.550 5.250 5.057 4.823 4.688
4.559 4.370 4.248 3.968 3.851 3.629
Input kW.
1.416 1.572 1.720 1.880 1.968 2.139
6.323 6.150 5.768 5.402 5.252 4.970
4.680 4.409 4.337 4.073 3.884 3.755
Input kW.
Capacity kW
Input kW.
Capacity kW
Input kW.
Capacity kW
Input kW.
Capacity kW
Input kW.
1.454 1.632 1.824 1.953 2.024 2.183
12ºC D
11ºC W
7ºC D
6ºC W
4ºC D
3ºC W
0ºC D
-1ºC W
-4ºC D
-6ºC W
6.669 6.396 6.198 5.757 5.003 4.958
1.712 1.659 1.589 1.553 1.343 1.218
6.570 6.372 5.931 5.642 4.887 4.422
1.782 1.730 1.713 1.623 1.430 1.377
6.392 6.150 5.816 5.525 4.784 4.307
1.836 1.780 1.694 1.623 1.464 1.412
6.159 5.984 5.642 5.351 4.568 4.314
1.889 1.818 1.730 1.659 1.500 1.254
-7ºC D
-8ºC W
19
7. Schematic diagram and wiring diagram
7.1 Schematic diagram
D1
IN4007*4
D2
CN1
A
4
D3
3
B
2
D4
1
TRA NS
D
D16
IN4007*4
D17
C
D18
D
D19
E1
2200uF/25V
E10
2200uF/25V
IC1 781 2
1
Vin
C1
104
IC10 7812
1
Vin
C23
104
等离子集尘器电源
+5V
R4 12K
1
C
B
A
C5
104
BUZ '
T1_roo m
8.1K/1%
CN3
T2_I.p ipe
8.1K/1%
机型
日期
CN2
Curre nt
2
1
3
RST
2
C25
IC5 KIA7 0 42
104
104
C7
104
D10
1N4148
CN5
COM
T1_roo m
C6
T2_I.pipe
R6
1K/1%
+12V
R5
1K
BUZ1
BUZZER1
+5V
2
D5
1
IN4148
R10 2K
E4
D6
R8
IN4148
10uF/16V
+5V
D7
IN4148
R11 2K
D8
R9
E5
10uF/16V
IN4148
+5V
D9
1N4148
R14
R12 2 K
1.4K/1%
R13
C8
16K
104
E6
10uF/16V
小功率分体机电控原理图（
1 2 3 4 5 6 78
+12V-a
1
3
Vout
E2
GND
2
GND
2
3
2
1
C3
104
1000uF/16V
+12V-b
3
Vout
E11
C24
104
1000uF/16V
GNDB
+5V
R62
10K
SEG3
SEG4
R59
10K
+5V
+5V
R1
10K
R3
R2
5.1K
8.06K
CT1
0057h
CN6
1
2
3
4
5
FAN_IN
SchemeFor U PD7 8F9177
版本号
IC3 780 5
Vin
R60
10K
TC_SELECT
TC_SELECT
GND
2
+5V
C26
104
FAN_IN
STEP _I1
STEP _I2
STEP _I3
STEP _I4
T1_roo m
T2_I.p ipe
C14
Vout
BUZ
COMP
O2
+5V
Current
TC_SELECT
1.2uF/450V
R242K
V1.02004.02.18
FAN_IN
BUZ
STEP_I1
STEP_I2
STEP_I3
STEP_I4
COMP
O2
SEG3
SEG4
T1
T2
CURRENT
STEP_I1
STEP_I2
STEP_I3
STEP_I4
FAN_IN
COMP
3
470uF/16V
BUZ
C19
104
R25 51/1 W
+12V-a
E3
10
11
12
13
14
15
16
17
18
19
20
21
1
2
3
4
5
6
7
）
+5V
说明：
1.JR1=2K
C4
104
1
VSS0
2
VDD0
3
P25
4
P26
5
P00
6
P01
7
P02
8
P03
9
P04
VSS1
P05
P50
P51
P52
P53
AVDD
AVREF
AN0
AN1
AN2
AN3
IC7
IN1
IN2
IN3
IN4
IN5
IN6
IN7
VSS8VDD
UJN2 003
T1T2
BT131
TR1
G
不带掉电记忆；不接
2.
去掉预留 的换气功能，控制口的输出功能去掉，保留输入功能，用 做自检检测口。
JR2
：端口高电平，芯片自检；
3.
清新控制 口兼作芯片快检选择口。
JR4
：端口高电平，芯片快检；
4.JR6
：端口高电平，选择单冷机型；
IC4 UPD789166
RESET
VppI C
VDD1
AVSS
AN5
AN4
16
OUT1
15
OUT2
14
OUT3
13
OUT4
12
OUT5
FAN_IN '
11
OUT6
BUZ '
10
OUT7
COM P '
9
C15
333
?
L2
Z1
12V
IC6 P C81 7
+12V-a
R26
1K
张次
项目代号
42
X1
X1
41
X2
X2
40
RST
39
XT1
38
XT2
37
36
SCL
P24
35
SDA
P23
34
COM1
P22
33
COM2
P21
32
COM3
31
P20
30
FAN_OUT
P33
29
FANSP
P32
28
ZERO
P31
REC
27
P30
26
VALVE
P11
FRESH
25
P10
24
23
22
1
2
3
4
5
+12V-a
E9
470uF/25V
R28
11K/2W
FAN_IN '
共1张
4205-4207
JR1
，带掉电记忆。
JR3
：端口低电平，芯片正常。
JR5
：端口低电平，芯片正常并可控输出。
JR7
：端口低电平，选择冷暖机型 。
X14MR7
1M
RST
SCL
SDA
COM1
COM2
+5V
COM3
FAN_OUT
FANSP_FEEDBACK
ZERO
REC
FRESH
JR4
JR5 1 0K
JR2
JR3 1 0K
CN12
104
R29
11K/2W
7
14
C24
+5V
8
SEG3
C16
102
2
SEG4
C17
1
102
D15
IN4007
SWING
设计
审核
10K
JR6
10K
JR7
2K
10K
IC8
GND
Vcc
MR9Q4
CP
Dsb
Dsa
74HC164
L1
ZR1
10D471K
N
王成垓
高
璋
VALVE
A
D11 1N4148
D12 1N4148
B
+5V
13
Q7
12
Q6
R45 3 30
11
Q5
R46 3 30
10
R47 3 30
6
Q3
R48 3 30
5
Q2
R49 3 30
4
Q1
R54 3 30
3
Q0
R55 3 30
C23
0.1uF/275VAC
CN11
1
N
+5V
IC2 2 4C0 4
R39
R38
8
10K
10K
SCL
SDA
COM1 COM2 COM3
DIS1
WT4021BG
h
com1
com2
R44
330
PTC
82RM
标准
批准
VCC
7
WC
6
SCL
5
+5V
R16 12K
R15
R17
12K
12K
R61 2K
JR1 2K
R412KR422KR43
+5V
+5V +5V
R56 10K R57 10K R5810K
Q8
9012Q99012
abcde
f
g
CN15
1
2
t
TRANS_IN
李劲松
顾
华
R18 1 0K
C9
104
GND4SDA
C2 104
A0
A1
A2
R19 150
+5V
R20 1 K
REC
C10
102
1
2
3
ZERO
Q2
9014
SW1
2K
Q10
9012
LED5
氧吧
LED6
自动
LED7
化霜
LED8
定时
LED9
运行灯
7654321
REC1
REC
V
E7
RECEIVER_V
FANSP_FEEDBACK
GND
C11
104
10uF/16V
等离子集尘器控制
FRESH
IC 9
R62
R61
1K
2K
Q11
PC817
+12V-a +12V-b
9014
氧吧控制
O2
外风机、四通阀控制
单冷机无此部分
FAN_OUT
VALVE
+12V-a
D22
IN41 48
R33
2K
+12V-a
R34
2K
+12V-a
R35
2K
COMP '
广东美的
制冷设备有限公司
Q5
9014
D23
IN41 48
Q6
9014
D24
IN41 48
Q7
9014
LOAD_FAN OUT
CN13
LOAD_VALVE
+12V-a
8
+5V
D13
IN4148
+12V
CN4
R215.1K
C12
103
FAN_BACK
SW2
+12V-b 1
R63
5.1K
GNDB
LOAD_HEAT L
RY3
RELA Y-SP ST
L1
RY4
RELA Y-SP ST
2
1
C20
333
RY5
RELA Y-SP ST
R36
51/1W
FUSE1
L1
3.15A/250V
LOAD_COMP
RY6
COMP
L( PO WER_IN PORT)
3
2
1
D
CN16
2
Q12
9014
CN10
1
C
O2_L
B
A
20
7.2 Wiring diagram
1
R
INDOOR UNIT
OUTDOOR UNIT
7.2.1 Cooling only
7.2.1.1 MSC-07CRN1, MSC-09CRN1 MSC-12CRN1
Y&G
C
BLACK
BLACK
S
BLUE
RED
R
COMPRESSOR
CAPACITOR
2(N)
Y&G
BLACK
RED
ED
RED
FA N
MOTOR
BLUE
21
7.2.1.2 MSC-18CRN1
OVERLOAD
RELAY
COMPRESSOR
INDOOR UNIT
OUTDOOR UNIT
RED
C
BLUE
R
S
Y/G
WHITE
BLACK
COMPRESSOR
CAPACITOR
BLACK
FAN
MOTOR
Y&G
BLACK
BLUE
RED
FAN
CAPACITOR
22
7.2.2 Heating/cooling
7.2.2.1 MSC-07HRN1, MSC-09HRN1 MSC-12HRN1
INDOOR UNIT
OUTDOOR UNIT
23
7.2.2.2 MSC-18HRN1
INDOOR UNIT
OUTDOOR UNIT
RED
OVERLOAD
RELAY
COMPRESSOR
Y/G
C
S
WHITE
BLUE
R
BLUE
BLUE
4-WAY
BLACK
BLACK
BLACK
FAN
MOTOR
Y&G
RED
BLUE
COMPRESSOR
CAPACITOR
FAN
24
CAPACITOR
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
: Self-protection amp of compressor, continue three seconds until turns off the compressor.
I
3sec
: Self-protection amp of compressor, continue five minutes until turns off the compressor.
I
5MIN
: Self-protection amp of outdoor fan/indoor fans when they change from higher wind to lower wind.
I
FAN
I
RESTORE
TH
TM
TL
: Amp self-protection return value
DEFROST
DEFROST
DEFROST
: High wind, defrosting temperature difference
: Middle wind, defrosting temperature difference
: 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
25
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
Current up
Current down
I< I
RESTORE
I
FAN
I
5MIN
I
5MIN
I
FAN
RESTORE
I< I
On On On
RESTORE
<I< I
FAN
<I<I
Off Off After 5 Minutes
5MIN
<I< I
Off Off After 3 Seconds
3SEC
<I< I
Off Off After 3 Seconds
3SEC
<I<I
Off Off After 5 Minutes
5MIN
<I< I
FAN
On On On
RESTORE
On On Off Heating mode I
Low speed On On Cooling mode
On On Off Heating mode I
Low speed On On Cooling mode
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.
Compressor Outdoor fan
Ts= S e t t i n g Tem p .
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.
Room temp. up
T<4℃ Low
4℃<T<5℃ Med.
T>5℃ High
Room temp. down
T> 4℃ High
1<T<℃ 4℃ Med.
T<1℃ Low
26
Indoor fan speed
Anti-freezing control to indoor evaporator at cooling mode( T: evaporator temp. )
Evaporator Temp. up
Evaporator Temp. down
Condition
Temp. Time
T> TE6 On On
T< TE6 >5 Minutes Off Off
T> TE5 On On
T< TE5 >5 Minutes Off Off
Compressor Outdoor fan
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
2 TS ≤TA <TS+ 2
3 TA < TS
LOW
BREEZE
LOW
BREEZE
LOW
BREEZE
ON 6minutes
OFF 4minutes
ON 5minutes
OFF 5minutes
ON 4minutes
OFF 6minutes
Repeat on and off cycle.
27
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
* This parameter can be changed from 0 to 3.
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.
Optional 1:
Anti-cold wind control function at heating mode
Condition
T= Indoor exchanger temp.
Indoor exchanger temp. up
Indoor exchanger temp. down
T<TE1 Off
TE1<T<TE2 Breeze
T>TE2 Setting fan speed
T> TE3 Setting fan speed
TE3<T<TE4 Breeze
T<TE4 Off
Indoor fan speed
Option 2:
Indoor fan changes breeze when compressor stop, after 127 second, indoor fan stop.
8.8.5 Auto wind at heating mode
Condition
T=Indoor Temp.-Setting Temp.
T<2℃ High Room temp. up
T>2℃ Med.
T> 0℃ Med. Room temp. down
T<0℃ High
Indoor fan speed
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8.8.6 Indoor evaporator high-temperature protection at heating mode
Condition
T= Indoor exchanger temp.
Indoor exchanger temp. up
T<TE8 On On
TE8<T<TE7 On Off
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:
℃
Fan speed is high ≤TH
Fan speed is mid ≤TM
Fan speed is low ≤TL
Breeze Meet only if it is Breeze
Temp. of evaporator---room temp.
Compressor Outdoor fan
DEFROST
DEFROST
DEFROST
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
(a) For defrosting condition ① leading to frost——both condition A and B are satisfied, if B is
satisfied before A, this can be regarded as severe frosting, and the defrosting time is 10 minutes,
or the defrosting time is 7.5 minutes.
(b) For defrosting condition ② leading to frost, the defrosting time is 10 minutes.
(c) For any case leading to frost, if A/C defrosts for 7.5 minutes three times, the forth defrosting time is
10 minutes.
→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.
29
8.9.4 Defrosting Actions:
45S 25S
Compressor
4-way Valve 23S
40S
Outdoor Fan
Indoor Fan
10S
Defrost 10or 6minutes
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 Sleep mode
8.14.1 The sleep 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
30
constant and the fan speed is kept at low speed.
The total time is 7 hours, after 7 hours the unit stops.
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).
The total time is 7 hours, after 7 hours the unit stops.
8.14.4 Auto:
The economic running function operates in accordance with selected running mode by auto mode.
The total time is 7 hours, after 7 hours the unit stops.
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.
8.16 PLASMA ( optional):
Starts with indoor fan.
Note: Plasma and Anion can be use together.
8.17 Anion (optional)
Starts with indoor fan.
Note: Plasma and Anion can be use together.
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A
A
A
A
A
A
8.18 Models and Parameters
Model MSC-07CRN1 MSC-07HRN1 MSC-09CRN1 MSC-09HRN1 MSC-12CRN1 MSC-12HRN1
I3SEC 7.5A 7.5A 10.0A 10.0A 12.0A 12.0A
I5MIN 6.2A 6.2A 7.5A 7.5A 8.5A 8.5A
IFAN 5.2A 5.2A 5.5
IRESTORE 4.2A 4.2A 4.5A 4.5A 6.5A 6.5
IDEFROST 3.2A 3.5A 5.0
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℃
NGLCOOL 200° 200° 200° 200° 155° 155°
NGLHEAT 0° 0° 10°
NGLOFF 124° 124° 124° 124° 124° 124°
TH
TM
TL
17°C 17°C
18°C 18°C
19°C 19°C
5.5A 7.5A 7.5A
20°C
23°C
26°C
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9.Troubleshooting
.
9.1 Display board
Signal receptor
5
4
1
AUTO indicator
1 22 3
This indicator illuminates when the air conditioner is in AUTO operation.
22
DEFROST indicator (For Cooling & Heating models only)
This indicator illuminates when the air conditioner starts defrosting automatically or
when the warm air control feature is activated in heating oper ation.
3
TE MPER ATUR E ind i ca t or
Displays the temperature settings when the air conditioner is operational.
4
O P E R AT ION i n di cato r
This indicator flashes after power is on and illuminates when the unit is in operation.
TIMER indicator
5
This indicator il luminates when TIMER is set ON/OFF
9.2 Malfunction display
Failure phenomenon Operation lamp Timer lamp
Indoor fan speed has been out of control for over 1 minute
Indoor room temp. or evaporator sensor is open circuit or short circuit
Over current protection of the compressor occurs 4 tim es X
EEROM error On
No over-zero signal
☆
☆
☆ ☆
X
On
☆
☆
r Extinguish
☆ Flash at 5Hz
33
9.3 Diagnostic Chart
9.3.1 After energizing, no indicator is lighted and the air conditioner can’t be operated.
After energizing, the air conditioner can’t be operated
Check if AC220V power supply outputs to Indoor PCB.
Ye s
Check if AC220V exists at the prim ary coil of transformer.
Ye s No
Indoor PCB is defective
Check if AC14.5V exists at the secondary coil of transformer.
No Yes
Yes
Take off the secondary plug of transformer, and then check if
AC14.5V exists at the secondary coil of transformer.
No
The transformer is defective. Indoor PCB is defective
9.3.2 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:
Resetting phenomenon often occurs during operation.
Ye s
After changing Indoor PCB, check if the failure releases.
No Yes
After changing indoor fan motor, check if the failure releases.
Indoor PCB is defective
No
Power supply circuit has problems.
34
9.3.3 Failure phenomenon
Failure phenomenon Operation lamp Timer lamp
Indoor fan speed has been out of control for over 1 minute
Indoor room temp. or evaporator sensor is open circuit or short circuit
Over current protection of the compressor occurs 4 tim es X
EEROM error On
No over-zero signal
r Extinguish
☆ Flash at 5Hz
☆
☆
☆ ☆
X
On
☆
☆
9.3.3.1 Operation lamp flashes and Timer lamp off.
Is connector connection good?
No Yes
Is voltage being applied to the fan motor?
Repair the connector
Yes No
Fan motor is defective
Indoor PCB is defective
9.3.3.2 Operation lamp flashes and Timer lamp on.
Is connection to connector good?
Yes
Replace the sensor
No
Repair connector
9.3.3.3 Operation lamp off and Timer lamp flashes
Operation lamp off and Timer lam p flashes
After changing the main control board, check if the failure releases.
Yes
No Yes
The voltage of power supply is too low (less than 187V)?
Indoor PCB is defective
Ye s No
Power supply fault Outdoor unit fault (such as the compressor)
9.3.3.4 Operation lamp on and Timer lamp flashes
EEROM error, indoor PCB is defective.
9.3.3.5 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.
35
10. 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
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