Stealth SC-18Z-UM,SC-18FM-UM Service Manual

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Page 1

DESIGNER SERIES DC INVE

RTER AIR

CONDITIONERS SERVICE MANUAL

Page 2

CONTENTS

PRODUCT

1. MODELS LIST...............................................................................................................................................4

1.2 Indoor Unit ...............................................................................................................................................................5

2. PRODUCT DATA

2.1 Product Data of Indoor Unit ................................................................................................................................. 6

2.1.1 Duct Type......................................................................................................................................... 7

2.1.2 Cassette Type ............................................................................................................................ 8 - 9

2.1.3 Floor Ceiling Type .................................................................................................................. 10 - 11

2.2 Operation Range ................................................................................................................................................. 11

2.3 Electrical Data ...................................................................................................................................................... 11

2.3.1 Duct Type......................................................................................................................................... 7

2.3.2 Cassette Type ............................................................................................................................ 8 - 9

2.3.3 Floor Ceiling Type .................................................................................................................. 10 - 11

3 PIPING DIAGRAM ..................................................................................................................................... 12

CONTROL

OPERATION FLOWCHART .................................................................................................................... 14

4.1 Cooling/Dry Operation ........................................................................................................................................ 14

4.2 Heating Operation ............................................................................................................................................... 15

5 WIRELESS REMOTE CONTROLLER ................................................................................................... 16

5.1 Operation and Display View .......................................................................................... 16 - 18

6. WIRED CONTROLLER ............................................................................................................................ 18

6.1 Display View ......................................................................................................................................................... 18

6.2 Operation View .................................................................................................................................................... 20

6.2.1

6.2.2

6.2.3

6.2.3.1

6.2.3.2

ERATION INSTRUCTION OF SPECIAL FUNCTIONS .................................................................. 23

4 OP

4.1 Setting of Filter Clean Reminder Function....................................................................................................... 23

4.2 Low Temperature Drying Function .................................................................................................................... 25

4.3 Lock Function ....................................................................................................................................................... 25

4.4 Memory Function ................................................................................................................................................. 26

4.5 Door Control Function/Human Sensitive Function ......................................................................................... 26

4.6 Switch between Fahrenheit and Centigrade ................................................................................................... 26

4.7 Enquiry of Ambient Temperature ....................................................................................................................... 26

4.8 Enquiry of Historical Malfunction ....................................................................................................................... 27

4.9 Debugging Function ............................................................................................................................................ 27

5 INSTALLATION OF WIRED CONTROLLER ......................................................................................... 31

5.1 Standard Accessories ......................................................................................................................................... 31

5.2 Installation Position and Requirement .............................................................................................................. 31

5.3 Installation of Wired Controller .......................................................................................................................... 32

5.4 Removal of Wired Controller.............................................................................................................................. 32

6 TROUBLESHOOTING .............................................................................................................................. 33

Page 3

7 CENTRALIZED CONTROLLER .............................................................................................................. 34

7.1 Smart Zone Controller ........................................................................................................................................ 34

7.2 Additional Special Functions .............................................................................................................................. 38

INSTALLATION .................................................................................................................................... 53

1 INDOOR UNIT INSTALLATION ............................................................................................................... 53

1.1 Installation of Duct Type ..................................................................................................................................... 53

1.2 Installation of Floor Ceiling Type ....................................................................................................................... 62

1.3 Installation of Cassette Type.............................................................................................................................. 69

2 OUTDOOR UNIT INSTALLATION .......................................................................................................... 79

2.1 Before Installation ................................................................................................................................................ 79

2.2 Installation Site .................................................................................................................................................... 79

2.3 Caution for Installation ........................................................................................................................................ 80

2.4 Dimension Data ................................................................................................................................................... 80

3 REFRIGERATION PIPING WORK ......................................................................................................... 81

3.1 Refrigeration Piping Work Procedures and Caution in Connecting ............................................................. 81

3.2 Specification of Connection Pipe ...................................................................................................................... 86

4 ELECTRIC WIRING WORK ..................................................................................................................... 86

4.1 Wiring Precautions .............................................................................................................................................. 86

4.2 Electrical Wiring ................................................................................................................................................... 87

MAINTENANCE .................................................................................................................................. 94

1 TROUBLE TABLE ...................................................................................................................................... 94

1.1 Main Control Malfunction ................................................................................................................................... 94

1.2 Description of Drive Malfunction ....................................................................................................................... 97

2 FLOW CHART OF TROUBLESHOOTING ............................................................................................ 98

2.1 Troubleshooting Flow Chart of Main Control Malfunction ............................................................................. 98

2.2 Troubleshooting Flow Chart of Drive Malfunction ......................................................................................... 105

2.3 Interface .............................................................................................................................................................. 110

2.4 IPM, PFC Testing Method ................................................................................................................................ 116

3 WIRING DIADRAM .................................................................................................................................. 117

3.1 Outdoor unit ....................................................................................................................................................... 117

3.2 Indoor unit ........................................................................................................................................................... 120

4 DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN PARTS .............................................. 124

4.1 Outdoor Unit ....................................................................................................................................................... 124

4.2 Indoor Unit .......................................................................................................................................................... 128

5 EXPLODED VIEWS AND SPARE PART LIST .................................................................................... 142

5.1 Outdoor Unit ....................................................................................................................................................... 142

5.2 Indoor Unit .......................................................................................................................................................... 154

Page 4

1.PRODUCT MODELS LIST

Model Name

Product Code

Power Supply

(V, Ph, Hz)

Appearance

CF090W0751

208/230V~60Hz

CF090W0771

208/230V~60Hz

CF090W0840

208/230V~60Hz

CF090W0781

208/230V~60Hz

1.1 Outdoor Unit

SC-18Z-UM

SC-24Z-UM CF090W0761 208/230V~60Hz

SC-36Z-UM

SC-42Z-UM

SC-48Z-UM

Page 5

1.2 Indoor Unit

Type

Model Name

Product Code

Nominal Capacity

Cooling/Heating

(Btu/h)

Power Supply

(V, Ph, Hz)

Appearance

Duct

Type

CF060N0512 CF060N0513

17100/18800

208/230V~60Hz

CF060N0522 CF060N0523

23800/27200

208/230V~60Hz

CF060N0532 CF060N0533

34000/41000

208/230V~60Hz

CF060N0600 CF060N0610

39500/44000

208/230V~60Hz

CF060N0542 CF060N0543

48000/54500

208/230V~60Hz

Cassette

Type

ET010N0801

17100/18400

208/230V~60Hz

ET010N0811

23800/27200

208/230V~60Hz

ET010N0821

34000/41000

208/230V~60Hz

ET010N0850

39500/44000

208/230V~60Hz

ET010N0831

48000/54500

208/230V~60Hz

Type

ED020N1081

17100/19100

208/230V~60Hz

ED020N1091

23800/27200

208/230V~60Hz

ED020N1101

34000/41000

208/230V~60Hz

ED020N1130

39500/44000

208/230V~60Hz

ED020N1111

48000/54500

208/230V~60Hz

SC-18CD-UM

SC-24CD-UM

SC-36CD-UM

SC-42CD-UM

SC-48CD-UM

Floor/Ceiling

SC-18CC-UM

SC-24CC-UM

SC-36CC-UM

SC-42CC-UM

SC-48CC-UM

SC-18FM-UM

SC-24FM-UM

SC-36FM-UM

SC-42FM-UM

match the outdoor unit without any change with it.

SC-48FM-UM

Note: 1 Ton =12000Btu/h = 3.517kW

Note: The universal outdoor units means that the customer can choose any of three kind of indoor unit to

Page 6

2 PRODUCT DATA

2.1 Product Data of Indoor Unit

2.1.1 Duct Type

Indoor unit SC-18CD-UM SC-24CD-UM

Model

Capacity

Power Input

SEER / HSPF (Btu/h)/W 16.00/9.50 16.00/10.00

Power Supply V/Ph/Hz 208/230V~60Hz 208/230V~60Hz

Heat Exchange - Cross Fin Coil Cross Fin Coil

Fan

Ext. Static Pressure

Sound Pressure Level(SS/H/M/L) dB(A) 40/39/36/28 47/46/44/40

Air Filter - PP PPKZ

Drain Piping mm(inch)

Outline Dimensions (W×H×D)

Net Weight kg(lb) 33.0(72.8) 34.0(75.0)

Outdoor Unit SC-18Z-UM SC-24Z-UM

Power Supply V/Ph/Hz 208/230V~60Hz 208/230V~60Hz

Heat Exchange - Cross Fin Coil Cross Fin Coil

Compressor

Refrigerant

Outline Dimensions (W×H×D) mm(inch)

Net Weight kg(lb) 48.0(105.8) 69.0(152.1)

Piping

Connections

Product Code

Outdoor unit SC-18Z-UM SC-24Z-UM

Product Code CF090W0751 CF090W0761 Cooling Capacity Btu/h 17100(5400~19800) 23800(7400~29000) Heating Capacity Btu/h 18800(4700~23200) 27200(8200~32400)

Cooling kW 1.55(0.55~1.75) 2.23(0.85~2.50) Heating kW 1.65(0.50~1.90) 2.36(0.80~2.75)

Indoor Unit SC-18CD-UM SC-24CD-UM

Drive - Direct Direct

Motor Output kW 0.06×1 0.15×1

Air Flow

Rated Ext. Static

Pressure

Range

Type - Rotary Rotary

Power Input W 1440 2550

Control -

Charge kg(oz) 1.4(49.4) 2.2(77.6)

Liquid Inch Φ1/4 Φ3/8

Gas Inch Φ1/2 Φ5/8

Max. Length m(ft) 50(164.0) 50(164.0)

Max. Height m(ft) 15(49.2) 15(49.2)

CF060N0512 CF060N0513

m3/h(CFM)

Pa(InWg) 25(0.1) 25(0.1)

Pa(InWg) 0~30(0~0.12) 0~75(0~0.3)

(inch)

1000(585) 1400(820)

Φ30×1.5

(Φ1.18×0.06)

1035×265×720

(40.8×10.5×28.4)

Electronic Expansion

Valve

955×700×395

(37.6×27.6×15.6)

CF060N0522 CF060N0523

Φ20×1.2

(Φ0.79×0.05)

1280×270×560

(50.4×10.6×22.0)

Electronic Expansion

Valve

980×790×425

(38.6×31.1×16.8)

Page 7

Model

Indoor unit

SC-36CD-UM SC-42CD-UM SC-48CD-UM

Product Code

CF060N0532 CF060N0533

CF060N0600 CF060N0610

CF060N0542 CF060N0543

Outdoor unit

Product Code

CF090W0771

CF090W0840

CF090W0781

Capacity

Cooling Capacity

Btu/h

34000(10800~39000)

39500(12000~42500)

48000(20400~49500)

Heating Capacity

Btu/h

41000(9800~49500)

44000(13000~52500)

54500(17500~58000)

Power Input

Cooling

3.28(0.70~4.50)

4.15(0.65~4.70)

5.15(1.40~5.60)

Heating

3.75(0.70~4.60)

3.90(0.76~4.75)

5.15(1.30~5.50)

SEER / HSPF

(Btu/h)/W

16.00/9.00

Indoor Unit

Power Supply

V/Ph/Hz

208/230V~60Hz

Heat Exchange

Cross Fin Coil

Fan

Drive

Direct

Motor Output

0.25×1

0.56×1

Air Flow

m3/h(CF

2000(1175)

2500(1470)

Rated Ext. Static

Pressure

Pa(InWg)

37(0.15)

50(0.2)

Ext. Static Pressure

Range

Pa(InWg)

0~100(0~0.4)

0~125(0~0.5)

Sound Pressure Level(SS/H/M/L)

dB(A)

53/52/48/44

55/53/49/45

Air Filter

PPKZ

Drain Piping

mm(inch)

Φ20×1.2

(Φ0.79×0.05)

Φ20×1.2

(Φ0.79×0.05)

Φ20×1.2

(Φ0.79×0.05)

Outline Dimensions (W×H×D)

(inch)

1225×290×775

(48.3×11.4×30.5)

1225×290×775

(48.3×11.4×30.5)

1340×350×750

(52.8×13.8×29.5)

Net Weight

kg(lb)

46.0(101.4)

56.0(123.5)

Outdoor Unit

Power Supply

V/Ph/Hz

208/230V~60Hz

Heat Exchange

Cross Fin Coil

Compressor

Type

Rotary

Power Input

4150

4580

Refrigerant

Control

Electronic Expansion

Valve

Electronic Expansion

Valve

Electronic Expansion

Valve

Charge

kg(oz)

3.5(123.5)

3.7(130.5)

4.0(141.1)

Outline Dimensions (W×H×D)

mm(inch)

1105×1100×440

(43.6×43.3×17.3)

960×1350×410

(37.7×53.1×16.2)

960×1350×410

(37.7×53.1×16.2)

Net Weight

kg(lb)

93.0(205.1)

95.0(209.5)

105.0(231.5)

Piping

Connections

Liquid

Inch

Φ3/8

Gas

Inch

Φ5/8

Max. Length

m(ft)

50(164.0)

70(229.7)

Max. Height

m(ft)

15(49.2)

SC-36Z-UM SC-42Z-UM SC-48Z-UM

16.00/9.00

SC-36CD-UM SC-42CD-UM SC-48CD-UM

SC-36Z-UM SC-42Z-UM SC-48Z-UM

Page 8

2.1.2 Cassette Type

Model

Cooling Capacity Btu/h

Capacity

Heating Capacity Btu/h

Power Input

SEER / HSPF (Btu/h)/W 16.00/9.00 18.00/10.00

Power Supply V/Ph/Hz 208/230V~ 60Hz 208/230V~ 60Hz

Heat Exchange - Cross Fin Coil Cross Fin Coil

Fan

Sound Pressure Level(SS/H/M/L) dB(A) 47/46/44/37 47/46/42/38

Air Filter - PP ABS+PP

Drain Piping mm(inch)

Outline Dimensions (W×H×D) mm(inch)

Net Weight kg(lb) 20.0(44.1) 27.0(59.5)

Power Supply V/Ph/Hz 208/230V~ 60Hz 208/230V~ 60Hz

Heat Exchange - Cross Fin Coil Cross Fin Coil

Compressor

Refrigerant

Outline Dimensions (W×H×D) mm(inch)

Net Weight kg(lb) 48.0(105.8) 69.0(152.1)

Piping

Connections

Indoor unit SC-18CC-UM SC-24CC-UM

Product Code ET010N0801 ET010N0811

Outdoor unit SC-18Z-UM SC-24Z-UM

Product Code CF090W0751 CF090W0761

17100(5400~18700) 23800(8200~29000)

18400(4700~22200) 27200(8200~32400) Cooling kW 1.70(0.55~1.75) 2.23(0.85~2.50) Heating kW 2.00(0.50~2.10) 2.36(0.80~2.75)

Indoor Unit SC-18CC-UM SC-24CC-UM

Drive - Direct Direct

Motor Output kW 0.045×1 0.045×1

Air Flow m3/h(CFM) 760(445) 1300(765)

Φ25×1.5

(Φ0.98×0.06)

665×240×595

(26.2×9.4×23.5)

Outdoor Unit SC-18Z-UM SC-24Z-UM

Type - Rotary Rotary

Power Input W 1440 2550

Control -

Charge kg(oz) 1.4(49.4) 2.2(77.6)

Liquid Inch Φ1/4 Φ3/8

Gas Inch Φ1/2 Φ5/8

Max. Length m(ft) 50(164.0) 50(164.0)

Max. Height m(ft) 15(49.2) 15(49.2)

Electronic

Expansion Valve

955×700×395

(37.6×27.6×15.6)

Φ25×1.5

(Φ0.98×0.06)

915×240×840

(36.1×9.4×33.1)

Electronic

Expansion Valve

980×790×425

(38.6×31.1×16.8)

Page 9

Model

Indoor unit

SC-36CC-UM SC-42CC-UM SC-48CC-UM

Product Code

ET010N0821

ET010N0850

ET010N0831

Outdoor unit

Product Code

CF090W0771

CF090W0840

CF090W0781

Capacity

Cooling Capacity

Btu/h

34000(10800~39000)

39500(11000~41000)

48000(20400~50500)

Heating Capacity

Btu/h

41000(9800~49500)

44000(12000~51000)

54500(17500~61500)

Power Input

Cooling

3.28(0.75~4.50)

4.40(0.53~4.65)

5.50(1.30~5.70)

Heating

3.75(0.60~4.80)

4.45(0.64~4.80)

5.10 (1.20~5.40)

SEER / HSPF

(Btu/h)/W

16.00/9.00

Indoor Unit

Power Supply

V/Ph/Hz

208/230V~ 60Hz

Heat Exchange

Cross Fin Coil

Fan

Drive

Direct

Motor Output

0.075×1

0.1×1

Air Flow

m3/h(CFM)

1860(1095)

2300(1350)

Sound Pressure Level(SS/H/M/L)

dB(A)

51/49/46/43

53/52/47/41

Air Filter

ABS+PP

Drain Piping

mm(inch)

Φ25×1.5

(Φ0.98×0.06)

Φ25×1.5

(Φ0.98×0.06)

Φ25×1.5

(Φ0.98×0.06)

Outline Dimensions (W×H×D)

mm(inch)

915×320×840

(36.1×12.6×33.1)

915×320×840

(36.1×12.6×33.1)

910×290×910

(35.8×11.4×35.8)

Net Weight

kg(lb)

32.0(70.6)

43.0(94.8)

Outdoor Unit

Power Supply

V/Ph/Hz

208/230V~ 60Hz

Heat Exchange

Cross Fin Coil

Compressor

Type

Rotary

Power Input

4150

4580

Refrigerant

Control

Electronic

Expansion Valve

Electronic

Expansion Valve

Electronic

Expansion Valve

Charge

kg(oz)

3.5(123.5)

3.7(130.5)

4.0(141.1)

Outline Dimensions (W×H×D)

mm(inch)

1105×1100×440

(43.6×43.3×17.3)

960×1350×410

(37.7×53.1×16.2)

960×1350×410

(37.7×53.1×16.2)

Net Weight

kg(lb)

93.0(205.1)

95.0(209.5)

105.0(231.5)

Piping

Connections

Liquid

Inch

Φ3/8

Gas

Inch

Φ5/8

Max. Length

m(ft)

50(164.0)

70(229.7)

Max. Height

m(ft)

15(49.2)

SC-36Z-UM

SC-36CC-UM SC-42CC-UM SC-48CC-UM

SC-42Z-UM SC-48Z-UM

SC-36Z-UM SC-42Z-UM SC-48Z-UM

Page 10

2.1.3 Floor-ceiling Type

Model

Capacity

Power Input

Heat Exchange - Cross Fin Coil Cross Fin Coil

Fan

Sound Pressure Level(SS/H/M/L) dB(A) 44/42/38/32 49/48/46/40

Outline Dimensions (W×H×D) mm(inch)

Heat Exchange - Cross Fin Coil Cross Fin Coil

Compressor

Refrigerant

Outline Dimensions (W×H×D) mm(inch)

Piping

Connections

Cooling Capacity Btu/h 17100(5400~19800) 23800(8200~27800) Heating Capacity Btu/h 19100(4700~23200) 27200(8200~30600)

SEER / HSPF (Btu/h)/W 17.00/9.50 16.00/10.00

Indoor Unit SC-18FM-UM SC-24FM-UM

Power Supply V/Ph/Hz 208/230V~ 60Hz 208/230V~ 60Hz

Motor Output kW 0.06×1 0.06×1

Air Filter - PP PP

Drain Piping mm(inch)

Net Weight kg(lb) 39.0(86.0) 40.0(88.2)

Outdoor Unit SC-18Z-UM UMAT24HP230V1AO

Power Supply V/Ph/Hz 208/230V~ 60Hz 208/230V~ 60Hz

Power Input W 1440 2550

Net Weight kg(lb) 48.0(105.8) 69.0(152.1)

Max. Length m(ft) 50(164.0) 50(164.0)

Max. Height m(ft) 15(49.2) 15(49.2)

Indoor unit SC-18FM-UM SC-24FM-UM

Product Code ED020N1081 ED020N1091

Outdoor unit SC-18Z-UM SC-24FM-UM

Product Code CF090W0751 CF090W0761

Cooling kW 1.55(0.55~1.75) 2.23(0.85~2.50) Heating kW 1.70(0.50~1.90) 2.36(0.80~2.75)

Drive - Direct Direct

Air Flow m3/h(CFM) 1000(585) 1200(705)

Φ17×1.75

(Φ0.67×0.07)

1220×225×700

(48.0×8.9×27.6)

Type - Rotary Rotary

Control -

Charge kg(oz) 1.4(49.4) 2.2(77.6)

Liquid Inch Φ1/4 Φ3/8

Gas Inch Φ1/2 Φ5/8

Electronic Expansion

Valve

955×700×395

(37.6×27.6×15.6)

Φ17×1.75

(Φ0.67×0.07)

1220×225×700

(48.0×8.9×27.6)

Electronic Expansion

Valve

980×790×425

(38.6×31.1×16.8)

Page 11

Model

Indoor unit

SC-36FM-UM SC-42FM-UM SC-48FM-UM

Product Code

ED020N1101

ED020N1130

ED020N1111

Outdoor unit

Product Code

CF090W0771

CF090W0840

CF090W0781

Capacity

Cooling Capacity

Btu/h

34000(10800~39000)

39500(12000~42500)

48000(20400~50500)

Heating Capacity

Btu/h

41000(9800~49500)

44000(13000~52500)

54500(17500~61500)

Power Input

Cooling

3.28(0.80~4.60)

4.05(0.60~4.70)

5.50(1.30~5. 70)

Heating

3.75(0.65~4.80)

4.05(0.69~4.80)

4.60(1.20~5.40)

SEER / HSPF

(Btu/h)/W

16.00/9.00

Indoor Unit

Power Supply

V/Ph/Hz

208/230V~ 60Hz

Heat Exchange

Cross Fin Coil

Fan

Drive

Direct

Motor Output

0.15×1

0.25×1

Air Flow

m3/h(CFM)

1900(1115)

2300(1350)

Sound Pressure Level(SS/H/M/L)

dB(A)

54/53/51/46

55/54/52/47

56/55/50/46

Air Filter

Drain Piping

mm(inch)

Φ17×1.75

(φ0.67×0.07)

Φ17×1.75

(φ0.67×0.07)

Φ17×1.75

(φ0.67×0.07)

Outline Dimensions (W×H×D)

mm(inch)

1420×245×700

(55.9×9.6×27.6)

1420×245×700

(55.9×9.6×27.6)

1700×245×700

(66.9×9.6×27.6)

Net Weight

kg(lb)

48.0(105.8)

50.0(110.3)

59.0(130.1)

Outdoor Unit

Power Supply

V/Ph/Hz

208/230V~ 60Hz

Heat Exchange

Cross Fin Coil

Compressor

Type

Rotary

Power Input

4150

4580

Refrigerant

Control

Electronic Expansion

Valve

Electronic Expansion

Valve

Electronic Expansion

Valve

Charge

kg(oz)

3.5(123.5)

3.7(130.5)

4.0(141.1)

Outline Dimensions (W×H×D)

mm(inch)

1105×1100×440

(43.6×43.3×17.3)

960×1350×410

(37.7×53.1×16.2)

960×1350×410

(37.7×53.1×16.2)

Net Weight

kg(lb)

93.0(205.1)

95.0(209.5)

105.0(231.5)

Piping

Connections

Liquid

Inch

Φ3/8

Gas

Inch

Φ5/8

Max. Length

m(ft)

50(164.0)

70(229.7)

Max. Height

m(ft)

15(49.2)

Indoor

Outdoor

Cooling

DB: 26.7℃(80.0℉)

WB: 19.4℃(67.0℉)

DB: 35.0℃(95.0℉)

WB: 23.9℃(75.0℉)

Heating

DB: 21.1℃(70.0℉)

WB: 15.6℃(60.0℉)

DB: 8.33℃(47.0℉)

WB: 6.11℃(43.0℉)

Piping Length

18k~48k units

7.6m(25.0ft)

SC-36Z-UM SC-42Z-UM SC-48Z-UM

SC-36FM-UM SC-42FM-UM SC-48FM-UM

Nominal capacities are based on the follow conditions.

Note:

SC-36Z-UM SC-42Z-UM SC-48Z-UM

The air volume is measured at the relevant standard external static pressure. Noise is tested in the Semi anechoic room, so it should be slightly higher in the actual operation due to

environmental change.

Page 12

2.2 Operation Range

Mode

Range of Outdoor Temperature

Cooling

-18.0℃(0℉)~48.0℃(118.4℉)

Heating

-18.0℃(0℉)~24.0℃(75.2℉)

Model

Compressor

Fan Motor

Fuse/Breaker

Capacity

Minimum

Circuit

Ampacity

Maximum

Overcurrent

Protection

Power Supply

Qty.

RLA

FLA

V/Ph/Hz

− A A A A

208/230V ~ 60Hz

12.0

1.5

5/25

208/230V ~ 60Hz

18.0

1.5

5/40

Model

Power Supply

Fan Motor FLA

Fuse/Breaker

Capacity

Minimum Circuit

Ampacity

Maximum

Overcurrent

Protection

V/Ph/Hz

A A A

208V/230V ~ 60Hz

0.6

5/15

208V/230V ~ 60Hz

1.3

5/15

208V/230V ~ 60Hz

2.1

5/15

208V/230V ~ 60Hz

2.1

5/15

208V/230V ~ 60Hz

4.0

5/15

208V/230V ~ 60Hz

0.5

5/15

208V/230V ~ 60Hz

0.5

5/15

208V/230V ~ 60Hz

0.9

5/15

1.5

208V/230V ~ 60Hz

0.9

5/15

1.5

208V/230V ~ 60Hz

1.5

5/15

208V/230V ~ 60Hz

0.6

5/15

208V/230V ~ 60Hz

0.6

5/15

208V/230V ~ 60Hz

1.4

5/15

208V/230V ~ 60Hz

1.4

5/15

208V/230V ~ 60Hz

2.1

5/15

2.3 Electrical Data

2.3.1 Outdoor unit

SC-18Z-UM

SC-24Z-UM

SC-36Z-UM 208/230V ~ 60Hz 1 21.2 2.0 5/45 29 45

SC-42Z-UM 208/230V ~ 60Hz 1 21.2 2*2.0 5/50 31 50

SC-48Z-UM 208/230V ~ 60Hz 1 32.5 2*2.0 5/70 45 70

Table 1-3-1 Electrical Data of Outdoor Unit

2.3.2 Indoor unit

SC-18CD-UM

SC-24CD-UM

SC-36CD-UM

SC-42CD-UM

SC-48CD-UM

SC-18CC-UM

SC-24CC-UM

SC-36CC-UM

SC-42CC-UM

Table 1-3-2 Electrical Data of Indoor Unit

SC-48CC-UM

SC-18FM-UM

SC-24FM-UM

SC-36FM-UM

SC-42FM-UM

SC-48FM-UM

Page 13

Notes:

Indoor Unit

Outdoor Unit

TH-OE

TH-D

Condenser

Filter

Electronic Expansion Valve

Liquid Solid Valve with Service Port

Liquid Solid Valve

4-Way Valve

Muffler

TH-C

Low Pressure Switch

Accumulator

High Pressure

Switch

Compressor

Gas Stop Valve

with Service Port

Gas Stop Valve

TH-IE

Evaporator

TH-E

Cooling

Heating

TH-OE: Outdoor Environment Thermal Bulb TH-C: Outdoor Condenser Thermal Bulb TH-D: Compressor Discharge Thermal Bulb

TH-IE: Indoor Environment Thermal Bulb TH-E: Indoor Evaporator Thermal Bulb

Filter

RLA: Rated load amperes (marked in the nameplate of the outdoor unit) FLA: Full load current

① The fuse is located on the main board. ② Install the disconnect device with a contact gap of at least 3mm (1/8inch) in all poles nearby

the units (Both indoor unit and outdoor unit).The appliance must be positioned so that the plug is accessible.

③ Take 2 pieces of power cord of 0.75mm2 (AWG18) as the communication lines between

indoor and outdoor unit, with their longest lengths of 50m (164feet). Please select the appropriate line length as per the actual installation conditions. The communication lines can not be twisted together. For the unit (≤30k), it’s recommended to use 8m (26-1/4feet) long communication line.

④ Take 2 pieces of power cord of 0.75mm2 (AWG18) as the communication lines between the

wired controller and the indoor unit, with their longest lengths of 30m (98-2/5feet). Please select the appropriate line length as per the actual installation conditions. The communication lines can not be twisted together. It’s recommended to use 8m (26-1/4feet) long communication line.

⑤ The wire size of the communication line should be no less than 0.75mm2 (AWG18). It’s

recommended to take 0.75mm2 (AWG18) power cords as the communication line.

3 PIPING DIAGRAM

Notes:

It is just a schematic diagram and some parts may differ from the real objects inside the unit.

Page 14

CONTROL

Satisfying open

Comp. condition

Temp of indoor

≤Set temp

Comp. stop

for 3 min

Open unit running at

cool or dry mode

Indoor fan run

Comp. and outdoor

fan run

Comp. and

outdoor fan stop

Power

4 OPERATION FLOWCHART

4.1 Cooling/Dry Operation

Page 15

4.2 Heating Operation

Satisfying open

comp. condition

Power

Comp. and

outdoor

fan run

Avoid cool wind

(only when comp.

start)

Temp of indoor

≥Set temp

Comp. and

outdoor fan stop

Comp. stop

for 3 min

Open unit running

at heat mode

Page 16

5 WIRELESS REMOTE CONTROLLER

No.

Name

Function Description

Signal

transmitter

 Signal transmitter

ON/OFF

button

 Press this button and the unit will be turned on; press it once more and the unit will be

turned off. When turning off the unit, the Sleep function will be canceled, but the presetting time is still remained.

MODE

button

 By pressing this button, Auto, Cool, Dry, Fan, Heat mode can be selected circularly.

Auto mode is default after power on. Under the Auto mode, the setting temperature will not be displayed; Under the Heat mode, the initial value is 28°C (82°F); under other modes, the initial value is 25°C (77°F).

 AUTO; COOL; DRY; FAN; HEAT (only for cooling and heating

unit)

5.1 Operation and Display View

Table 2-2-1 Operation instruction of wireless remote controller

Page 17

- button

 Preset temperature can be decreased by pressing this button. Pressing and holding this

button for more than 2 seconds can make the temperature changed quickly until release this button and then transmit this order. The temperature adjustment is unavailable under the Auto mode, but the order can be sent by pressing this button. Centigrade setting range: 16~30; Fahrenheit scale setting range 61~86.

+ button

 Preset temperature can be increased by pressing this button. Pressing and holding this

button for more than 2 seconds can make the temperature changed quickly until release the button and then transmit this order. The temperature adjustment is unavailable under the Auto mode, but the order can be sent by pressing this button. Centigrade setting range: 16~30; Fahrenheit scale setting range 61~86.

FAN button

 By pressing this button, Auto, Low, Middle, High speed can be circularly selected. After

power on, Auto fan speed is default.

 Low speed  Middle speed  High speed

Note: Under the DRY mode, the fan will be kept running at the low speed and the fan speed isn't adjustable.

SWING

UP/DOWN

button

 Press this button to set up the swing angle, which circularly changes as below:

 When the guide louver starts to swing up and down, if SWING functions are canceled, the

air guide louver will stop and remains at the current position.

 Indicates the guide louver swings up and down among those five directions

(Simplified SWING function applicable for some Fan Coil Units: When the wireless remote controller is energized initially with the unit under the OFF status, it should be set by pressing the + button and the SWING button simultaneously, with the symbol blinking twice. Then, after the unit is turned on, this function can be activated by pressing the SWING button, with the displayed symbol indicating swing function is on and without this displayed symbol indicating swing function is off).

CLOCK

button

 By pressing this button, the clock is allowed to be set, with blinking, and then press

the +/- button to adjust the clock within 5 seconds. If the +/-button is pressed down constantly for more than 2 seconds, the clock setting will be increased or decreased 10 minutes every 0.5 seconds. After that, another press on the CLOCK button accepts the setting. 12:00 is the default, when the wireless remote controller is energized.

TIMER ON

button

 When TIMER ON is activated, ON will blink while the symbol will disappear. Within 5

seconds it is allowed to set the ON time by pressing the +/- button. Each press will make the time increase or decrease one minute. Besides, the time can also be set by pressing the +/- button constantly. That is, in the early 2.5 seconds, the time will increase/decrease quickly per single minute, and in the late 2.5, the time will increase/decrease per ten minutes. After the desired time value is set, press TIENE ON again to conform the setting within five seconds. After that, another press on TIMER ON will cancel the setting. Prior to this setting, the clock shall be set to the actual time.

Page 18

X-FAN

button

 Pressing this button can activate or deactivate the X-FAN function. In Cool or Dry mode,

by pressing this button, if " " is displayed, it indicates the X-FAN function is activated. By repressing this button, if " " disappears, it indicates the X-FAN function is deactivated. After energizing, X-FAN OFF is defaulted. If the unit is turned off, X-FAN can be deactivated but can't be activated.

TEMP

button

 By pressing this button it is allowed to select displaying the indoor setting temperature or

the indoor ambient temperature.

 Indoor setting temperature is default after the indoor unit is energized initially.

 By pressing the TEMP button, when the temperature symbol is displayed, the indoor

displayer will show the indoor setting temperature; when is displayed, it will show the indoor ambient temperature; when is invalidation, If current displays indoor ambient temperature, if received the other remote control signal, it will display presetting temperature, 5s later, will back to display the ambient temperature (This function is applicable to partial of models).

TIMER

OFF button

 By pressing this button it is available to go to the TIMER OFF setting state with the same

setting method as that of the TIMER ON, in which case the OFF symbol blinks.

TURBO

button

 In the Cool or Heat mode, pressing this button can activate or deactivate the TURBO

function. When the TURBO function is activated, its symbol will be displayed; when the running mode or the fan speed is changed, this function will be canceled automatically (This function is applicable to partial of models).

SLEEP

button

 By pressing this button, Sleep On and Sleep Off can be selected. After powered on,

Sleep Off is defaulted. Once the unit is turned off, the Sleep function is canceled. When Sleep is set to On, the symbol of SLEEP will display. Under the Fan and Auto modes, this function is not available.

LIGHT button

 Press this button to select LIGHT on or off in the displayer. When the LIGHT is set to on,

the icon will be displayed and the indicating light in the displayer will be on. When the LIGHT is set to off, the icon will be disappeared and the indicating light in the displayer will be off.

6 WIRED CONTROLLER

6.1 Display View

Figure 2-3-1 Appearance of wired controller

Page 19

Figure 2-3-2 LCD display of wired controller

No.

Icons

Introduction

Left and right swing function

Up and down swing function

Air exchange function

Sleep function

Auto mode

COOL mode

DRY mode

FAN mode

HEAT mode

Health function

I-Demand function

Vacation function

Status display of master and slave wired controller

Shield function The button operation, temperature setting, "On/Off" operation, "Mode" setting, and "Save" setting are disabled.

Table 2-3-1 Instruction to LCD Display

Page 20

Fan speed

Memory function The unit will resume the original setting state after power recovery.

Turbo function

Energy-saving function

Ambient/setting temperature

Electric heater

Blow function

Defrosting function

Filter cleaning

Timer Setting

Keycard control / Detected status sensed by human body

Quiet function

Lock function

6.2 Operation View

6.2.1 Silk Screen of Buttons

Figure 2-3-3 Silk screen of buttons

Page 21

6.2.2 Instruction to Function of Buttons

No.

Description

Functions

Enter/Cancel

①. Function selection and canceling; ②. Press it for 5s to view the ambient temperature; press Mode button

to select viewing outdoor ambient temperature or indoor ambient temperature.

▲

①. Running temperature setting range of indoor unit:

16~30℃(61~86℉);

②. Timer setting range: 0.5~24hr; ③. Setting of air function level; ④. Setting of energy-saving temperature; ⑤. Setting of cleaning class.

▼

Fan

Setting of high/medium high/medium/medium low/low/auto fan speed.

Mode

Setting of auto/cooling/heating/fan/dry mode of indoor unit.

Function

Switch over among these functions of swing/air/sleep/health/ I-Demand/out/turbo/save/e-heater/X-fan/clean/quiet.

Timer

Timer setting.

On/Off

Turn on/off indoor unit.

4 Mode

and

2 ▲

Memory function

Press Mode and ▲ buttons at the same time for 5s under off state of the

unit to enter/cancel memory function (If memory function is set, indoor unit will resume original setting state after power failure and then power recovery. If not, indoor unit is defaulted to be off after power recovery. Ex-factory setting of memory function is on).

2 ▲

and

6 ▼

Lock

Upon startup of the unit without malfunction or under off state of the unit,

press ▲ and ▼ buttons at the same time for 5s to enter lock state. In this

case, any other buttons won‟t respond when pressing. Repress ▲ and ▼

buttons for 5s to quit lock state.

4 Mode

and

5 Function

Enquiry and

setting of address

of wired

controller

Under off state of the unit, press Mode and Function buttons at the same time for 5s to set the address. (More details please refer to project debugging)

5 Function

and

7 Timer

Setting of project

parameters

(More details

please refer to

the Notes)

Under off state of the unit, press Function and Timer buttons at the same time for 5s to go to the debugging menu. Press Mode button to adjust the setting items and press ▲ or ▼ buttons to set the actual value.

4 Mode

and

6 ▼

Switch between

Fahrenheit and

Centigrade

Under off state of the unit, press Mode and ▼ buttons at the same time for 5s to switch between Fahrenheit and Centigrade.

5 Function

and

6 ▼

Viewing historical

malfunction

Continuously press Function and ▼ buttons for 5s to view historical

malfunction. Then press ▲ and ▼ buttons to adjust displayed content s.

The timer displaying position displays the sequence of malfunction and the detailed error code. The 5th displayed malfunction is the last malfunction.

1 Enter/Cancel

and

4 Mode

Setting of master

and slave wired

controller

Under off state of the unit, press Enter/Cancel and Mode buttons at the

same time for 5s to set master and slave wired controller. Press ▲ or ▼

button to adjust. (More details please refer to project debugging)

Table 2-3-2 Instruction to buttons of wired controller

Page 22

Note:

temperature sensor, selecting three speeds in high speed and three speeds in low speed of indoor fan motor, display setting of freeze protection error code, setting of cold air prevention and hot air hot prevention function, setting of refrigerant-lacking protection function, selecting of blowing residual heat of indoor unit, selecting of compressor electric heater mode, selecting of low-power consumption mode, selecting door control function, selecting human sensitive function, long-distance monitoring, temperature

The following functions can be set through Function and Timer buttons: setting of ambient

compensation value at the air return port.

6.2.3 Setting of Wired Controller’s Address

6.2.3.1 Enquiry and Setting of Wired Controller’s Address

Under off state of the unit, press Function and Mode buttons at the same time for 5s to enter setting

interface of wired controller‟s address. In this case, LCD displays address number. Then press▲ or ▼

button to adjust address and then press Enter/Cancel button to confirm. The address setting is related to the setting of Debugging Function 4.9.10. When the selection in 4.9.10 is 00, address of centralized controller is to be set and the address setting range is 01~16; when the selection in 4.9.10 is 01, address of long-distance monitor is to be set and the address setting range is 01~255.

Enquiry and setting of wired controller‟s address is shown as Figure 2-3-4 below:

Figure 2-3-4 Enquiry and setting of wired controller‟s address

Page 23

6.2.3.2 Setting of Master/Slave Wired Controller’s Address

Under off status of the unit, press Enter/Cancel and Mode buttons at the same time for 5s to go to the

enquiry and setting interface of master/slave wired controller. In this case, LCD displays wired controller‟s

address (01 for master wired controller and 02 for slave wired controller). Press ▲ or ▼ button to adjust

address of master/slave wired controller and then press Enter/Cancel button to confirm. If slave wired controller is set, the icon will be displayed.

Note: If there is only one wired controller, it only can be set as the master; if there are two wired

controllers, one should be the master and the other should be the slave.

Setting of master/slave wired controller‟s address is shown as Figure 2-3-5 below:

Figure 2-3-5 Enquiry and setting of master/slave wired controller‟s address

7 OPERATION INSTRUCTION OF SPECIAL FUNCTIONS

7.1 Setting of Filter Clean Reminder Function

When unit is on, press Function button to switch to filter clean reminder function. The icon will blink and then enter setting of filter clean reminder function. Timer zone displays the set pollution level and you can press ▲ or ▼ button to adjust the level. Then press Enter/Cancel button to turn on this function.

When filter clean reminder function is turned on, press Function button to switch to filter clean reminder function. The icon will blink and press ▲ or ▼ button to adjust timer zone to display “00”. Then press Enter/Cancel button to cancel this function.

Page 24

Setting of filter clean reminder function is shown as Figure 2-4-1 below:

Figure 2-4-1 Setting of filter clean reminder function

When setting the filter clean reminder function, timer zone will display 2 digits, of which the former indicates the pollution degree of operating place and the latter indicates the accumulated operating time of indoor unit. There are 4 types of situations:

(1) Clean Reminder is off (Timer zone shows “00“); (2) Slight pollution: the former digit in timer zone shows 1 while the latter one shows 0, which

indicates the accumulated operating time is 5500hr. Each time the latter digit increases 1, the accumulated operating time increases 500hr. When it reaches 9, it means the accumulated operating time is 10000hr;

(3) Medium pollution: the former digit in timer zone shows 2 while the latter one shows 0, which

indicates the accumulated operating time is 1400hr. Each time the latter digit increases 1, the

Page 25

accumulated operating time increases 400hr. When it reaches 9, it means the accumulated

Pollution

level

Accumulated

operating time

(hour)

Pollution

level

Accumulated

operating time

(hour)

Pollution

level

Accumulated

operating time

(hour)

5500

1400

100

6000

1800

200

6500

2200

300

7000

2600

400

7500

3000

500

8000

3400

600

8500

3800

700

9000

4200

800

9500

4600

900

10000

5000

1000

operating time is 5000hr;

(4) Heavy pollution: the former digit in timer zone shows 3 while the latter one shows 0, which

indicates the accumulated operating time is 100hr. Each time the latter digit increases 1, the accumulated operating time increases 100hr. When it reaches 9, it means the accumulated operating time is 1000hr;

The detailed pollution level and the corresponding time is as shown in Table 2-4-1 below:

Table 2-4-1 Pollution level and corresponding time

If filter clean reminder function is turned on, the icon will be on.

(1) If cleaning time is not reached, no mater the setting is changed or not, the accumulated operating

time won‟t be recalculated when pressing Enter/Cancel button;

(2) If cleaning time is reached, in unit on or off state, will blink every 0.5s for reminder. Press

Function button to switch to icon and press ▲ and ▼ button to adjust the level. Then press

Enter/Cancel button, so the accumulated operating time won‟t be cleared (If the adjusted level is

higher than the present accumulated operating time, the icon won‟t blink any more; if the adjusted level is lower than the present accumulated operating time, the icon will go on blinking).

(3) The only way to cancel filter clean reminder function is to press Function button to switch to filter

clean reminder function. The icon will blink and press ▲ or ▼ button to adjust timer zone to

display “00”. In this case, the accumulated operating time will be cleared.

7.2 Low Temperature Drying Function

Under dry mode and when set temperature is 16℃(61℉), continuously press ▼ button for twice and then the set temperature will be 12℃ (54℉). In this case, the unit will enter low temperature drying function.

When low temperature drying function is turned on, press ▲ button or Mode button to exit low

temperature drying function.

7.3 Lock Function

When unit is turned on normally or turned off, pressing ▲ and ▼ buttons at the same time for 5s will turn on Lock function. LCD will display . Pressing ▲ and ▼ buttons at the same time for 5s to turn off this function.

When Lock function is turned on, any other buttons won‟t respond when pressing. The function can be memorized after power failure and then power recovery.

Page 26

7.4 Memory Function

Press Mode and ▲ buttons at the same time for 5s under off state of the unit to turn on or cancel

memory function. If memory function is set, is displayed. If not, indoor unit is defaulted to be off after power recovery.

If memory function is set, indoor unit will resume original setting state after power failure and then power recovery.

Note:

abnormal. Do not cut off power within 5s after memorized content is changed.

If cut off power with 5s after memorized content is changed, the memorized content may be

7.5 Door Control Function/Human Sensitive Function

Door control function or human sensitive function can be selected (More details please refer to Debugging Function). These two functions can‟t be turned on at the same time.

When door control function is selected, the wired controller will work when the room card is inserted and stop working when the room card is not inserted; when human sensitive function is selected, the wired controller will work when it senses there is somebody in the room and stop working when it senses there is nobody in the room. When the door control function senses the room card is not inserted or human sensitive function senses there is nobody in the room, the wired controller will display icon.

Notes:

① In long-distance monitoring or centralized control, no matter the room card is inserted or not,

the ON/OFF of unit can be controlled. If long-distance monitoring or centralized control information is received when the room card is not inserted, icon is cleared. When the card is reinserted, door control function is judged to be turned on. If long-distance monitoring or centralized control information is received when the room card is inserted, it will keep the original status.

② The unit can not be controlled by buttons when the card is not inserted. ③ When door control function and human sensitive function have been set at the same time, it

is defaulted that door control function is valid and human sensitive function is invalid.

7.6 Switch between Fahrenheit and Centigrade

Under off state of the unit, press Mode and ▼ buttons at the same time for 5s to switch between

Fahrenheit and Centigrade.

7.7 Enquiry of Ambient Temperature

Under off or on state of the unit, press it for 5s to view the ambient temperature. In this case, timer zone displays ambient temperature type 01 or 02. Ambient temperature zone displays the corresponding temperature of that type. 01 stands for outdoor ambient temperature and 02 stands for the indoor ambient temperature after compensation. Press Mode button to switch between 01 and 02. Pressing other buttons except Mode button or receiving remote control signal will exit enquiry state. If there is no operation within 20s will also exit enquiry state.

Page 27

Notes:

① If the unit is not connected to outdoor ambient temperature sensor, display of outdoor

ambient temperature will be shielding after energizing for 12hr.

② If there is malfunction of outdoor ambient temperature sensor, display of outdoor ambient

temperature will be shielding after energizing for 12hr.

7.8 Enquiry of Historical Malfunction

Under off or on state of the unit, continuously press Function and ▼ buttons for 5s to view historical

malfunction.

In enquiry state, set temperature displaying zone displays “00”. Press ▲ and ▼ buttons to view the 5

malfunctions happened recently. The timer displaying position displays the detailed error code. The 5th displayed malfunction is the last malfunction.

7.9 Debugging Function

Under off state of the unit, press Function and Timer buttons at the same time for 5s to go to the debugging menu. Press Mode button to adjust the setting items and press ▲ or ▼ button to set the actual value.

7.9.1 Setting ambient temperature sensor (dual ambient temperature sensors function)

Under debugging state, press Mode button to adjust to “00” in temperature displaying zone. Timer zone displays setting state and press ▲ or ▼ button to adjust. There are 3 selections:

(1) The ambient temperature at air return is set as indoor ambient temperature (timer zone displays

01). (2) The temperature at wired controller is set as indoor ambient temperature (timer zone displays 02). (3) Select the temperature sensor at air return in cooling, dry and fan mode; select the temperature

sensor at wired controller in heating and auto mode.

7.9.2 Selecting three speeds in high speed and three speeds in low speed of indoor fan motor

Under debugging state, press Mode button to adjust to “01” in temperature displaying zone. Timer

zone displays setting state and press ▲ or ▼ button to adjust. There are 2 selections:

(1) Three speeds in low speed (LCD displays 01) (2) Three speeds in high speed (LCD displays 02)

Three speeds in low speed include high, medium and low speeds; three speeds in high speed include

super high, high and medium speed.

For this series, this function is invalid.

Note:

Page 28

7.9.3 Displaying setting of freeze protection error code

Under debugging state, press Mode button to adjust to “02” in temperature displaying zone. Timer

zone displays setting state and press ▲ or ▼ button to adjust. There are 2 selections:

(1) Displayed (LCD displays 01) (2) Not displayed (LCD displays 02)

It is defaulted to be not displayed for export unit and be displayed for domestic unit.

7.9.4 Setting refrigerant lacking protection function

Under debugging state, press Mode button to adjust to “04” in temperature displaying zone. Timer

zone displays setting state and press ▲ or ▼ button to adjust. There are 2 selections:

(1) With refrigerant lacking protection function (LCD displays 01) (2) Without refrigerant lacking protection function (LCD displays 02)

7.9.5 Selecting blowing residual heating of indoor unit

Under debugging state, press Mode button to adjust to “05” in temperature displaying zone. Timer

zone displays setting state and press ▲ or ▼ button to adjust. There are 2 selections:

(1) Mode 1 (LCD displays 00) (2) Mode 2 (LCD displays 01)

Note:

Mode 1: Unit stops when reaching temperature point and indoor fan motor does not stop in cooling mode; after unit stops when reaching temperature point in heating mode, duct type unit and floor ceiling unit blow residual heat for 60s and then stop indoor unit, while cassette type unit always operates in low fan speed and blows residual heat for 60s when there is malfunction.

Mode 2: After unit stops when reaching temperature point, the indoor fan motor stops operation with a 10s delay no matter in cooling mode or in heating mode.

Blowing residual heating of indoor unit

7.9.6 Mode selecting of compressor electric heating belt

Under debugging state, press Mode button to adjust to “06” in temperature displaying zone. Timer zone displays setting state and press ▲ or ▼ button to adjust. There are 2 selections:

(1) Mode 1 (LCD displays 00) (2) Mode 2 (LCD displays 01)

Notes:

① Mode 1: Compressor electric heating belt starts when outdoor ambient temperature is below

35℃ (95℉) and stops when outdoor ambient temperature is above 37℃ (99℉). When outdoor ambient temperature is within 35℃ (95℉)~ 37℃ (99℉), the belt will keep its previous operation state.

② Mode 2: Compressor electric heating belt starts when outdoor ambient temperature is below

-2 (28℉) and stops when outdoor ambient temperature is above 0℃ (32℉). When outdoor ambient temperature is within -2℃ (28℉)~0℃ (32℉), the belt will keep its previous

Page 29

operation state.

7.9.7 Selecting low-power consumption mode

Under debugging state, press Mode button to adjust to “07” in temperature displaying zone. Timer

zone displays setting state and press ▲ or ▼ button to adjust. There are 2 selections:

(1) With low-power consumption mode (LCD displays 00) (2) Without low-power consumption mode (LCD displays 01)

7.9.8 Selecting door control function

Under debugging state, press Mode button to adjust to “08” in temperature displaying zone. Timer

zone displays setting state and press ▲ or ▼ button to adjust. There are 2 selections:

(1) Without door control function (LCD displays 00) (2) With door control function (LCD displays 01)

7.9.9 Selecting human sensitive function

Under debugging state, press Mode button to adjust to “09” in temperature displaying zone. Timer zone displays setting state and press ▲ or ▼ button to adjust. There are 2 selections:

(1) Without human sensitive function (LCD displays 00) (2) With human sensitive function (LCD displays 00)

7.9.10 Selecting long-distance monitoring or centralized controller

Under debugging state, press Mode button to adjust to “10” in temperature displaying zone. Timer

zone displays setting state and press ▲ or ▼ button to adjust. There are 2 selections:

(1) Centralized controller (LCD displays 00) (2) Long-distance monitoring (LCD displays 01)

7.9.11 Selecting fan mode of indoor fan motor

Under debugging state, press Mode button to adjust to “11” in temperature displaying zone. Timer

zone displays setting state and press ▲ or ▼ button to adjust. There are 4 selections:

(1) P3 (LCD displays 03) (2) P4 (LCD displays 04) (3) P5 (LCD displays 05) (4) P6 (LCD displays 06) (5) P7 (LCD displays 07)

Note:

different fan mode combinations are corresponding to different static pressure. Ex-factory defaulted mode is P05. You can set the mode through wired controller. S01, S02, S03……S12, S13 means the rotation speed of indoor unit is from low to high.

You can select P03, P04, P05, P06, P07 in fan mode of indoor fan motor, which means

Page 30

Table 2-4-2 Combination relationship of P03, P04, P05, P06, P07

Static pressure selection

Super

high

speed

High

speed

Medium

high speed

Mediu

speed

Medium

low speed

Low

speed

Quiet

speed

Quiet

speed

Quiet

speed

P03

S09

S08

S07

S06

S05

S04

S03

S02

S01

P04

S10

S09

S08

S07

S06

S05

S04

S03

S02

P05

S11

S10

S09

S08

S07

S06

S05

S04

S03

P06

S12

S11

S10

S09

S08

S07

S06

S05

S04

P07

S13

S12

S11

S10

S09

S08

S07

S06

S05

7.9.12 Selecting compensation of temperature sensor at air return

Under debugging state, press Mode button to adjust to “12” in temperature displaying zone. Timer

zone displays setting state and press ▲ or ▼ button to adjust. There are 16 selections:

(1) Compensate 0℃ (32℉) (LCD displays 00) (2) Compensate 1℃ (34℉) (LCD displays 01) (3) Compensate 2℃ (36℉) (LCD displays 02) (4) Compensate 3℃ (37℉) (LCD displays 03) (5) Compensate 4℃ (39℉) (LCD displays 04) (6) Compensate 5℃ (41℉) (LCD displays 05) (7) Compensate 6℃ (43℉) (LCD displays 06) (8) Compensate 7℃ (45℉) (LCD displays 07)

(9) Compensate 8℃ (46℉) (LCD displays 08) (10) Compensate 9℃ (48℉) (LCD displays 09) (11) Compensate 10℃ (50℉) (LCD displays 10) (12) Compensate 11℃ (52℉) (LCD displays 11) (13) Compensate 12℃ (54℉) (LCD displays 12) (14) Compensate 13℃ (55℉) (LCD displays 13) (15) Compensate 14℃ (57℉) (LCD displays 14) (16) Compensate 15℃ (59℉) (LCD displays 15)

Note:

Indoor ambient temperature compensation can be set through wired controller (E.g. If 02 is

selected, it indicates the compensation temperature is 2℃ (36℉). If the indoor ambient temperature detected by the temperature sensor at air return is 29℃ (84℉), the ambient temperature after compensation is 29℃ (84℉)-2℃ (36℉)=27℃ (81℉)).

After finishing setting, press Enter/Cancel button to save and exit setting. After entering this interface, the system will exit this menu if there is no operation on the button within 20s. Normal off state interface will be displayed and present setting will not be saved.

Page 31

8 INSTALLATION OF WIRED CONTROLLER

Description

Quantity

Note

Socket base box installed in the wall

No.1 in Figure 2-5-1

Base plate of wired controller

No.2 in Figure 2-5-1

Screw M4×25

No.3 in Figure 2-5-1

Panel of wired controller

No.4 in Figure 2-5-1

8.1 Standard Accessories

Table 2-5-1 Standard Accessories of Wired Controller

Figure 2-5-1

8.2 Installation Position and Requirement

(1) Prohibit installing the wired controller at the misty place or the place with direct sunlight. (2) Prohibit installing the wired controller at the place near high temperature objects or

water-splashing places.

(3) Prohibit installing the wired controller at the place where faces forward to the window, to avoid

interference of another remote controller from neighborhood.

(4) Cut off the power of heavy current wire in the installation hole of the wall. All power should be cut

off during installation.

(5) In order to avoid abnormal operation due to electromagnetic interference, etc., pay attention to the

following notes during connecting wires:

1) Make sure the tie-in interface of communication wire is correct, otherwise it may lead to communication malfunction.

2) The signal wires and communication wires of wired controller should be separated from power cord and connection wire between indoor unit and outdoor unit.

3) If the air conditioner is installed at the strong electromagnetic interference place, signal wire and communication wire of wired controller must use shielding twisted wire.

Page 32

8.3 Installation of Wired Controller

Firstly, the selection and connection way of wired controller‟s signal wire are as below:

(1) Choose suitable signal wire: 2-core signal wire (wire diameter ≥0.75mm2 (AWG18), wire

length<30m (98-2/5ft) and the recommended length is 8m (26-1/4ft).

(2) Make sure the power of indoor unit is cut off; fix the signal wire of wired controller on the wiring

board for wired controller of indoor unit with screws; make sure the signal wire is solid.

Then, the detailed installation procedures of wired controller are as shown in Figure 2-5-2:

Figure 2-5-2 Installation of wired controller

Brief instructions of installation procedure:

(1) Pull out the 2-core signal wire in the installation hole of the wall and then let this wire go through

the hole at the back of wired controller‟s base plate. (2) Fix the base plate and installation hole of the wall together with screw M4×25mm (3/16×1inch). (3) Fix the above mentioned 2-core signal wire on the copper insert X1 and X2 with the equipped

screws of wired controller. (4) Fasten the wired controller‟s panel with its base plate together.

8.4 Removal of Wired Controller

Figure 2-5-3 Removal of wired controller

Page 33

9 TROUBLESHOOTING

Error Code

Error

Compressor high pressure protection

Freeze protection

Compressor low pressure protection, refrigerant lacking protection, refrigerant recycling mode

Compressor high discharge temperature protection

Communication malfunction

Malfunction of indoor fan motor

Full water protection

Malfunction of indoor ambient temperature sensor

Malfunction of evaporator temperature sensor

Malfunction of condenser temperature sensor

Malfunction of outdoor ambient temperature sensor

Malfunction of discharge temperature sensor

Malfunction wired controller temperature sensor

Wong dial switch of capacity

Malfunction of outdoor main control memory chip

Malfunction of electric box sensor

Compressor overload protection

Overload protection

IPM protection

Malfunction of DC fan motor

Drive desynchronizing protection

PFC protection

Malfunction of humidity sensor

Start-up failure

Compressor phase protection

Power protection

Models of indoor unit and outdoor unit do not match with each other

Direction changing malfunction of 4-way valve

Drive reset protection

Overcurrent protection

Communication malfunction between main control and drive

Malfunction of drive module sensor

High temperature protection of drive module

Zero-cross protection

AC current protection

Malfunction of drive current

Sensor connection protection

9.1 Display of Error Code

Table 2-6-1 Error Code List

Page 34

When there is a malfunction during operation, error will be displayed on the temperature displaying

Temperature excursion protection

Low voltage protection of bus bar

High voltage protection of bus bar

Charging circuit malfunction

Abnormity of input voltage

Malfunction of outdoor drive memory chip

zone of LCD. When several malfunctions occur at the same time, these error codes will be displayed circularly.

When there is a malfunction, please turn off the unit and ask the professional for maintenance. For example, E1 means high pressure protection during operation.

Figure 2-6-1

10 CENTRALIZED CONTROLLER

10.1 Smart Zone Controller

10.1.1 Function

The smart zone controller can directly control up to 16 sets of indoor units in a control network and is available to check the running status of any unit through the LCD, including running mode, timer, fan speed, centralized control and shielding setting etc.

Page 35

10.1.2 Outline Drawing of Press Buttons

No.

Name

Function Description

Mode

It is used for the switchover among different modes.

Fan

It is used to set the fan speed, high, medium, low or auto.

On/Off

It is used to set the on/off status of the indoor unit.

▲

①. Under the single/centralized control status: It is used to set the running

temperature of the indoor unit with max.30°C (86℉) anmin.16°C (61℉);

②. Under the timing setting status: It is used to set the timing period with max.24

hours and min.0 hour;

③. Under the clock setting status: it is used to set the hour (max.:23, min.: 0) and

minute (max.:59, min.: 0) of the clock.

▼

Mon

1/9

It is used for the switchover between unit 1 and unit 9; Under the timing or clock setting status, it indicates Monday.

Tue 2/10

It is used for the switchover between unit 2 and unit 10; Under the timing or clock setting status, it indicates Tuesday.

Wed 3/11

It is used for the switchover between unit 3 and unit 11; Under the timing or clock setting status, it indicates Wednesday.

Figure 2-7-1

10.1.3 Functions of Press Buttons

Table 2-7-1 Functions of Press Buttons

Page 36

Thu

4/12

It is used for the switchover between unit 4and unit 12; Under the timing or clock setting status, it indicates Thursday.

Fri

5/13

It is used for the switchover between unit 5and unit 13; Under the timing or clock setting status, it indicates Friday.

Sat

6/14

It is used for the switchover between unit 6 and unit 14; Under the timing or clock setting status, it indicates Saturday.

Sun

7/15

It is used for the switchover between unit 7 and unit 15; Under the timing or clock setting status, it indicates Sunday.

8/16

It is used for the switchover between unit 8 and unit 16.

Timer/Time

It is used to set the timing or on/off time of the selected indoor unit as well as to set the clock of the system.

Central

It is used for the switchover between single and centralized control modes.

Shield

It is used to deactivate some or all functions of a single or a group the indoor unit(s).

All on/off

It is used to start/stop all indoor units.

10.1.4 LCD of the Controller

10.1.4.1 Outline Drawing of the LCD

Figure 2-7-2

10.1.4.2 Introduction to Symbols on the LCD

Figure 2-7-3

Page 37

Table 2-7-2 Introduction to the Symbols on the LCD

No.

Name

Description

Fan speed

It displays the fan speed of the indoor unit, high, medium, low and auto.

Running mode

It displays the running mode of the indoor unit, auto, cool, dry, fan and heat.

System clock

It displays the current time (hour and minute) in 24-hour time system and also the week day.

Shield

It displays the shield status, “ALL‟, “TEMP”, “MODE” and „ On/Off”.

Weekly timer

It displays the timing period (unit: 0.5 hour) which will circulate every week.

Set temperature Indoor unit code

It displays the set temperature, indoor unit code (01-16), and symbols of Celsius and Fahrenheit scale.

Control mode

It displays “CENTER” under the centralized control mode and no

display under the single control mode.

Ambient

temperature

Serial port

It displays the ambient temperature, serial port as well as symbols of Celsius and Fahrenheit scale.

Indoor unit code

On/off status

Numbers indicate the indoor unit codes which will be displayed when

the corresponding indoor unit is online; “” indicates the on/off status of

the indoor unit, its flashing for “on” or else for “off”

Error

Child lock

It displays the error codes when some error(s) arises and also “CHILD LOCK” when this function is activated.

10.1.4.3 Network Topology

Network Connection of the Smart Zone Controller

Figure 2-7-4

Page 38

10.1.4.4 Dimensions

Figure 2-7-5

10.2 Additional Special Functions

10.2.1 Door control function

Door control function is available for this series. In order to achieve this function, please select the door control accessories from Stealth.

(1) Interface instructions

1) The interface printing is DOOR-C and the type is B2B-XH-B. The wires of door control accessories must be connected to this interface;

2) Electrical characteristic: none;

3) Working principle: when the card is inserted, this interface is short-circuited; when the card is not inserted, this interface is cut off;

Connect the door control detection port of indoor main board with the interface of door control board (CN1 in the following Figure); connect the door control signal to the door control signal input port (X1 and X2 in the following Figure). X1 is AC 220V signal input and X2 is DC +5V to 24V. You can only choose X1 or X2. Definition of interface is as shown in Figure below:

Figure 2-7-6 Illustration of door control port

Page 39

Table 2-7-3 Door control wiring port

No.

Terminal name

Terminal instruction

CN1

CN1 wiring terminal and door control interface of indoor main board

X1(AC-L, AC-N)

X1(AC-L, AC-N) wiring terminal, connected to door control input

signal, rated voltage 220V.

X2 wiring terminal, connected to door control input signal

(2) Function instructions:

In order to achieve this function, set it through wired controller and refer to the following operation method. It is defaulted that this function is not activated; if this function is set and door control accessories are connected, the unit will control the ON/OFF of unit according to the card state detected by door control detection board. When the card is not connected, the unit will turn to standby state. If the unit is with wired controller, icon will be displayed on the wired controller.

If the unit is without wired controller, there will be no display. The unit will control the ON/OFF of unit according to the detected information.

(3) Setting method:

Under off state of the unit, press Function and Timer buttons at the same time for 5s to go to the debugging menu. Press Mode button to adjust to “08” in temperature displaying zone. Timer zone displays setting state and press ▲ or ▼ button to adjust. There are 2 selections:

1) Without door control function (LCD displays 00)

2) With door control function (LCD displays 01)

Choose the second selection and then press Enter/Cancel button to save and exit setting. Now, door control function is activated. The unit will memorize this setting status. The setting value will be memorized after power failure. The detailed setting is as shown in the Figure below:

Figure 2-7-7

Page 40

Note:

Name

Product code

Remark

Controller for door control function

(MK03)

MC207022

One controller for one unit

You can purchase the accessory from Stealth. The information is as below:

10.2.2 Human sensitive function

You can purchase the module of human sensitive function for this series. An interface for this module is reserved on the main board of indoor unit.

(1) Interface instruction:

1) The printing is CN23 and the interface type is JST B3B-PH-K-S;

2) Electrical characteristic: 1-pin: +12V; 2-pin: detection port; 3-pin: GND; current: 150mA;

3) Working principle: when the module detects there is nobody in the room, 2-pin and 3-pin are short-circuited and they are low electrical level; when there are somebody in the room, 2-pin output is high electrical level.

(2) Function instructions:

In order to achieve this function, set it through wired controller and refer to the following operation method. It is defaulted that this function is not activated; if this function is set and human sensitive module is connected, the unit will control the ON/OFF of unit according to the signal detected by human sensitive module. When there is nobody in the room and the unit is with wired controller, icon will be displayed on the wired controller; if the unit is without wired controller, there will be no display. The unit will control the ON/OFF of unit according to the detected information.

(3) Setting method:

Under off state of the unit, press Function and Timer buttons at the same time for 5s to go to the debugging menu. Press Mode button to adjust to “09” in temperature displaying zone. Timer zone displays setting state and press ▲ or ▼ button to adjust. There are 2 selections:

1) Without human sensitive function (LCD displays 00)

2) With human sensitive function (LCD displays 01)

Choose the second selection and then press Enter/Cancel button to save and exit setting. Now, human sensitive function is activated. The unit will memorize this setting status. The setting value will be memorized after power failure. The detailed setting is as shown in the Figure below:

Page 41

Figure 2-7-8

Note:

When door control function and human sensitive function have been set at the same time, it is defaulted that door control function is valid and human sensitive function is invalid.

The user can purchase the human sensitive module by himself. Please pay attention to the following notes:

① There is the needle stand interface on the main board. The interface model inserted into this

needle stand must be PH-3P-K;

② The current consumption of module can not exceed the current capacity provided by this

interface.

10.2.3 MODBUS interface

The indoor unit of this series has MODBUS interface. If the user needs to connect the unit to the management system of the building, please enquire Stealth for the MODBUS protocol.

Page 42

Figure 2-7-9

(1) Interface instruction:

1) The printing is COM-BMS1 and the interface type is B4B-XH-K3;

2) Electrical characteristic: baud rate: 9600bps; standard: RS485;

3) Working principle:

The indoor main board can send out the unit operation state through this interface and receive logical control information to realize control and monitor of the unit.

(2) Function instructions:

In order to achieve this function, set the address mode and address through wired controller. Please refer to Point 3 for the setting method. You must set the address mode into long-distance control address mode.

The address mode is defaulted to be connecting to centralized controller mode and the defaulted address is 1.

(3) Setting method:

1) Firstly, set the address mode of wired controller into centralized controller address mode. The setting method is:

Under off state of the unit, press Function and Timer buttons at the same time for 5s to go to the debugging menu. Press Mode button to adjust to “10” in temperature displaying zone. Timer zone displays setting state and press ▲ or ▼ button to adjust. There are 2 selections:

① Centralized controller address mode (LCD displays 00) ② Long-distance control address mode (LCD displays 01)

Choose the second selection and then press Enter/Cancel button to save and exit setting. Now, the address of wired controller is set to match the address of long-distance control. The unit will memorize this setting status. The setting value will be memorized after power failure. The detailed setting is as shown in the Figure below:

Page 43

Figure 2-7-10

2) Address setting of each unit: when the address mode is set to be long-distance control address mode. The address setting value range is 01~255. The setting method is:

Under off state of the unit, press Function and Mode buttons at the same time for 5s to enter setting

interface of wired controller address. LCD displays address sequence. Press ▲ or ▼ button to adjust the

address sequence and then press Enter/Cancel button to confirm. The setting value will be memorized after power failure. The detailed setting is as shown in the Figure below:

Page 44

Figure 2-7-11

Notes:

① In order to realize the MODBUS interface function, the address mode of the unit must be set

into long-distance control address mode; you can not set it into centralized control address mode, otherwise, this function can not be realized;

② The unit can not be connected to MODBUS and centralized controller at the same time; only

one of them can be selected;

③ 255 sets of unit in maximum can be connected in the same network; the unit addresses in the

same network must be different, otherwise, the unit control will be affected;

④ Perform wiring when the unit power is cut off.

10.2.4 Connect to interface of centralized controller:

The indoor unit is with the interface of centralized controller. When centralized controller is connected,

centralized control of unit can be realized when the wired controller is not connected;

(1) Interface instruction:

1) The printing is COM-BMS2, COM-BMS3 and the interface type is B2B-XH-K3;

2) Electrical characteristic: none;

3) Working principle: centralized control the communication of indoor main board and realize the unit control;

(2) Function instructions:

Page 45

In order to achieve this function, set the address mode and address through wired controller. Please

refer to Point 3 for the setting method. The address mode is defaulted to be connecting to centralized controller mode and the defaulted address is 1;

When the centralized controller is connected, centralized control of the unit can be realized to control

unit ON/OFF, operation mode, set fan speed/temperature and weekly timer.

(3) Setting method:

Firstly, set the address mode of wired controller into centralized controller address mode. The setting

method is:

1) Under off state of the unit, press Function and Timer buttons at the same time for 5s to go to

the debugging menu. Press Mode button to adjust to “10” in temperature displaying zone.

Timer zone displays setting state and press ▲ or ▼ button to adjust. There are 2 selections:

① Centralized controller address mode (LCD displays 00) ② Long-distance control address mode (LCD displays 01)

Choose the first selection and then press Enter/Cancel button to save and exit setting. Now, the address of wired controller is set to match the address of centralized controller. The unit will memorize this setting status. The setting value will be memorized after power failure. The detailed setting is as shown in the Figure below:

Figure 2-7-12

2) Address setting of each unit: when the address mode is set to be centralized controller address mode. The address setting value range is 01~16. The setting method is:

Page 46

Under off state of the unit, press Function and Mode buttons at the same time for 5s to enter setting

Name

Product code

Remark

Centralized controller

CE50-24/E

MC207025

Only 16 sets of unit in maximum can be connected to

this controller

interface of wired controller address. LCD displays address sequence. Press ▲ or ▼ button to adjust the

address sequence and then press Enter/Cancel button to confirm. The setting value will be memorized after power failure. The detailed setting is as shown in the Figure below:

Figure 2-7-13

When the address is set, the wired controller can be removed and connect the centralized controller to

the indoor main board. Then connect the required units to realize centralized control of these units;

Notes:

① When centralized controller is to be connected, set the address mode into centralized

controller address mode through wired controller. Long-distance control address mode can not be set;

② The unit addresses in the same network must be different, otherwise, communication

malfunction will occur and the unit can not work normally;

③ When centralized controller is to be connected, the unit address range is 1-16. Only 16 sets

of unit in maximum can be connected

④ The code and model of wired controller is as below:

Page 47

10.2.5 Light board control:

Name

Product code

Remark

Receiving board Z6L

30260000001

Only for duct type unit

Light board interface is reserved on the main board of duct type unit. You can purchase Stealth light board to realize control of the unit. When wired control is also connected, you can realize control of the unit through light board and wired controller.

Light board information:

There are two buttons on the light board to control ON/OFF of cooling and heating. There are also other indicators and nixie tube display.

Cooling: set temperature 26°(79℉), low fan speed; heating: set temperature 20°(68℉), low fan speed

Function instructions: under OFF state, pressing Cool/Heat button can turn on cooling/heating mode. Under unit ON state, pressing Cool/Heat button can turn off the unit. When the unit is in cooling/heating mode, pressing any button can turn off the unit.

Figure 2-7-14

10.2.6 Malfunction output of relay:

There is malfunction outlet signal on the main board of indoor unit; when the unit occurs unrecovered malfunction, this signal will be output.

(1) Interface instruction:

1) Printing: X5, ERROR

2) Electrical characteristic OF malfunction indicator or electric bell: 220V~AC, power≤10W

3) Working principle: when the unit occurs unrecovered malfunction, the relay will suck and 220V AC signal will be output.

(2) Function instructions:

When the user needs centralized control over several units, malfunction signals can be connected to control room through this malfunction output interface. The user can indicate the unit malfunction through malfunction indicator or electric bell, so the management people can go to check the malfunction unit directly.

If dry contact detection of unit malfunction is needed, please connect this interface into the monitoring system. When the closed signal is detected when malfunction occurs, this signal can be seen in monitoring system.

Page 48

Figure 2-7-15 Malfunction output

(3) Setting method:

Do not need to set this function

Notes:

① The interface voltage should be 220V AC intense current; ② If malfunction light is connected, please make sure its power is not too big (it should be within

10W), otherwise, the relay on main board will be burnt.

Page 49

Figure 2-7-16

No.

Interface

Evaporator temperature sensor

Swing motor

Human sensitive

Door control

Full water detection

Interface of light board

Communication port of centralized controller

MODBUS interface

Interface of annunciator live wire

ON interface of fresh air valve

OFF interface of fresh air valve

Interface of annunciator neutral wire

Interface of DC motor

Main board grounding wire

Power live wire

Power neutral wire

Neutral wire of fresh air valve

Water pump interface

Live wire of fresh air valve

Interface of anion generator

Interface of auxiliary heating board

Interface of outdoor unit

Interface of wired controller

Monitor interface

Ambient temperature sensor

Table 2-7-4 Corresponding interfaces of main board

Page 50

10.2.7 Reserved fresh air valve interface for duct type unit

Outdoor

fresh air

Fresh air

Air valve

Indoor side

Air intake pipe

Air supply pipe

Before starting up the unit, make sure remove all the sealing film on the healthy filter block.

MOTOR WIRING DIAGRAM

EARTH WIRING DIAGRAM

POWER

F C O

2BU 1RD

5WH

8BN

COOL PLASMA GENERATOR

9RD

AP1

15WH

XT1

OUTDOOR UNIT

1 2

WIRE CONTROL

XT2

AP2

Fresh Air Valve Common

OPEN

2 H1 H2

11RD 12BK 13BN 14OG

COM6

COM7

PUMP-C

PUMP

15K

20K

LIQUID SWITCH

Environment

Temp. Sensor

Pipe Temp. Sensor

Pump Motor

E500

N2(X6)

AC-L

(X501)

V-NEW-CLOSE(X2)

V-NEW-OPEN(X1)

AC-N

(X500)

HEALTH

(X4)

(X6)

DC-MOTOR1

For the reserved connection way of air valve performer, connect it to F, C, O of wiring board according to the wiring diagram. Connect the public port of air valve to F, connect CLOSE to C and connect OPEN to O.

Figure 2-7-17

10.2.8 Interface of anion generator

For the cold plasma anion generator, connect the red line to HEALTH（X4） and the blue line to N2(X6) according to the principle circuit. The detector of cold plasma anion generator should be places at the air return. The distance between two detectors should be 10mm (3/8inch) ≤ L ≤ 25mm (1inch).

Figure 2-7-18

Page 51

7.2.9 Chassis electric heating belt of outdoor unit is optional

When outdoor ambient temperature is very low, electric heating belt can be equipped on the chassis to prevent freezing of the chassis.

Figure 2-7-19

Page 52

INSTALLATION

1 INDOOR UNIT INSTALLATION

1.1 Installation of Duct Type

1.1.1 Before Installation

After receiving the machine, please check for any transport damage. If finding any surface or internal damage, please immediately report to the transport company or equipment company in writing.

After receiving the machine, please check the unit and accessories in reference to the packing list. Ensure that the model is correct and the machine is in good condition. Please also check if the specification and quantity of accessory parts are correct.

Determine the correct handling route and methods, thus to avoid damaging the unit or causing possible hazard. For the sake of protection and safety, it is suggested to move the unit with the packaging box. Even though it is not permitted to do like this under special occasions, do not remove the packaging box, thus to avoid loosening or falling during handling.

Confirm if the installing foundation is solid. When this unit is to be installed on the metal section of the building, make sure that the electrical insulation must comply with applicable standards.

Ensure that the place of installation is far from the area where the inflammable or explosive substances are stored, thus to avoid possible explosion or fire due to leakage.

1.1.2 Installation Site

Ensure the top hanging piece has strong strength to withstand the weight of the unit.

The drainage pipe has convenient flow of water.

There is no obstacle blocking the return air inlet and exhaust outlet, so as to ensure sound air circulation.

The installation spaces required by the drawing must be ensured, so as to provide enough space for the service and maintenance.

The installation site must be far away from heat source, leakage of inflammable gas or smoke.

The indoor unit is of ceiling mount (indoor unit is hidden inside the ceiling).

The indoor and outdoor units, the power cable and the connecting electrical lines must be at least 1 meter from any TV set or radio. This is to avoid image interference or noise of the TV set or radio. (Even if the distance is 1 meter, noise can also exist if there is strong electric wave.)

1.1.3 Caution for Installation

Generally, the unit is installed indoor on ceiling. For ceiling mounting, ensure that the hangers on ceiling have adequate strength to support the weight of the unit.

To meet the noise and vibration requirements, the unit shall be installed by using rubber pad (thickness ≥20mm (13/16inch)) and rubber connector.

Insert a M10 expansion bolt into the hole. Drive a nail into the bolt. Refer to the profile dimensions

Page 53

drawing of the indoor unit for the distance between the holes. Refer to Figure 3-1-1 for the installation of the

Ceiling-mount Screw

Air-conditioning Unit

Hanger

Hook

Screw

Nut

Air Intake

Air Supply

Screw Hanger

Nut

≤48mm(1-7/8inch)

I Detail

expansion bolt.

Figure 3-1-1 Figure 3-1-2

Figure 3-1-3 Install the hanger onto the indoor unit as Figure 3-1-2 and Figure 3-1-3 shows. Install the indoor unit at the ceiling as Figure 3-1-4 shows.

Figure 3-1-4 Precautions for unfavorable installation: The preparation of all pipes (connecting pipes and drainage pipes) and cables (connecting lines of

wire controller, indoor unit and outdoor unit) must be ready before the installation, so as to achieve smooth installation.

Drill an opening on the ceiling. Maybe it is required to support the ceiling to ensure the evenness of it

and avoid the vibration of it. Consult with the user or a construction company for details.

In case the strength of ceiling is not enough, use angle iron sections to set up a beam support. Place

the unit at the beam and fix it.

Level inspection of the indoor unit After the indoor unit is installed, it is required to check the level of the whole unit. The unit must be

placed horizontally, but the condensate pipe shall be installed obliquely, so as to facilitate the drainage of condensate.

Page 54

Condensate Drainpipes

Level Instrument

Air Intake

Air Supply

Enlarged View

Condensate Drainpipe

As the inside of the unit is in the negative pressure status, it is required to set up a backwater elbow. The requirements is:

A=B≥(0.145P/10000+20)/25.4(inch)

P is the absolute pressure inside the unit. The unit of the pressure is psig.

1.1.4 Dimension Data

Air intake

Max

D E

Max

Gas Pipe Liquid Pipe

Air Intake

Drainage Pipe

Electric Box

 For the units: 18k

Figure 3-1-5

 For the units: 24k~42k

Page 55

 For the units: 48k

D E

Item

Model

A B C D E F G H I

945

(37-1/4)

620

(24-3/8)

740 (29)

890

(35-1/8)

1035

(40-7/8)

720

(28-3/8)

740 (29)

125

(4-7/8)

205

(8)

265

(10-1/2)

1100

(43-3/8)

515

(20-3/8)

820

(32-1/4)

1160

(45-5/8)

1280

(50-3/8)

560 (22)

1000

(39-1/2)

160

(6-1/4)

235

(9-1/4)

270

(10-1/2)

1010

(39-3/4)

750

(29-1/2)

820

(32-1/4)

1115

(43-7/8)

1225

(48-1/4)

775

(30-1/2)

980

(38-1/2)

160

(6-1/4)

230

(9-1/8)

290

(11-3/8)

1170

(46-3/8)

645

(25-3/8)

850

(33-1/2)

1150

(45-1/4)

1340

(52-3/4)

750

(29-1/2)

950

(37-1/2)

190

(7-1/2)

315

(12-1/2)

350

(13-3/4)

Name & Shape

QTY

Notes

Installation and Operating

Instructions

Insulation materials for gas pipe

Used for gas pipe connector on indoor unit.

Insulation materials for liquid

pipe

Used for liquid pipe connector on indoor unit.

Insulation materials for drainage

pipe

Used for wrapping the condensate pipe and

rubber plug.

Nut

To connect liquid pipe.

Nut

To connect gas pipe.

Nut M6 with gasket

Use for fixing the hanger hook.

Nut M10 with gasket

Use for fixing the hanger hook.

Nut M10

4 sets, used for ceiling mounting of the indoor

unit.

spring gasket

Hook

Used for ceiling mounting of the indoor unit.

Wired controller

Screw M4

To fix the base plate of wired controller and

installation hole of the wall together.

Figure 3-1-6

Table 3-1-1

Unit: mm (inch)

SC-18CD-UM

SC-24CD-UM

SC-36CD-UM

SC-42CD-UM

SC-48CD-UM

Table 3-1-2 Installation Accessories List for Duct-type Indoor Unit

Page 56

1.1.5 Installation Clearance Data

＞2500mm

(98-3/8inch)

Nut with Washer

Nut Spring

Washer

＞250mm

(9-7/8inch)

＞250mm

(9-7/8inch)

Install the drain hose in accordance with the instructions in this installation manual and keep the area warm enough to prevent condensation. Problems with the piping may lead to water leaks.

Drain hose

Arrange the drain hose

lower than this drain port

Trap

Air bleeding

Rise

√

Figure 3-1-7 Warning! The height of installation for the indoor unit should be 2.5m (8-1/5ft) above.

1.1.6 Drain Piping Work

Installation of Drainage Pipeline:

(1) (Install the drain hose with downward gradient (1/50 to 1/100) and no risers or traps are used for

the hose (Figure 3-1-8).

(2) Be sure there is no crack or leak on the drain hose to avoid the formation of air pocket (Figure

3-1-8). (3) When the hose is long, install supporters (Figure 3-1-9). (4) Always use the drain hose which has been insulated properly.

Figure 3-1-8

Page 57

Supporter

Drain hose

1~1.5m(3-2/7~5feet)

Figure 3-1-9 Figure 3-1-10

Condensate Drainpipe

As the inside of the unit is in the negative pressure status, it is required to set up a backwater elbow. The requirements is:

A=B≥(0.145P/10000+20)/25.4(inch)

P is the absolute pressure inside the

unit. The unit of the pressure is psig.

Condensate Drainpipe

Enlarged View

Drain port

Fastener

Drain cap

Always check that the drain cap is installed to the unused drain port and is fastened with the nylon fastener. If the drain cap is not installed, or is not sufficiently fastened by the nylon fastener, water may drip during the cooling operation.

Figure 3-1-11

(5) Use a suitable drain hose, and see Table 3-3-3 for its size. (6) There is a drain port on both the left and right sides. Select the drain port to match the local

conditions (Figure 3-1-10).

(7) When the unit is shipped from the factory, the drain port is defaulted to be the one on the left side

(electric box side), the port on right side has been plugged.

(8) When using the drain port on the right side of the unit, reinstall the drain cap to the left side drain

port (Figure 3-1-12).

Figure 3-1-12

(10) The unused drain port also should be insulated properly (Figure 3-1-14).

(9) Be sure to insulate where the drain port and the drain hose is connected (Figure 3-1-13).

Page 58

Drain hose insulation

Drain port Insulated drain hose

Insulated drain hose

Unit

0mm(0inch)

Drain hose insulation Drain port

Drain cap

0mm(0inch)

Unit

Drain cap

Figure 3-1-13 Figure 3-1-14

Ceiling

Hoisting stand

Clamp(attachment)

Drain hose(attachment)

Drain raising hose

≤300mm(11-3/4inch)

1000~1500mm(39-3/8~59inch)

≤100mm

(39-3/8inch)

Drain hose(attachment)

≤75mm(3inch)

≤1000mm

(39-3/8inch)

(11) There is adhesive on one side of the insulation so that after removing the protective paper over it

the insulation can be directly attached to the drain hose.

(12) Considerations for the unit with the condensate pump:

1) For the unit with the condensate pump, only one drain port at the side close to the electric box is prepared and only through it the drain hose can be connected.

2) See table 3 for the size of the drain port of the unit with the condensate pump, which is different from that of the unit without the condensate pump.

3) For the unit with the condensate pump, two drain ports at the bottom are defaulted to be factory plugged with drain caps. After the installation of the drain hose, these two drain ports also need to be insulated properly with the same way aforementioned.

4) The drain hose for the unit with the condensate pump should be arranged as shown in the figure below.

① The vertical height of the drain hose should be 75mm (3inch) or less so that it is unnecessary

② When multiple drain hoses are used, their installation should be performed as shown in the

Figure 3-1-15

for the drain port to withstand additional force.

Figure 3-1-16

figure below.

Page 59

0~1000mm(0~39-3/8inch) ≥100mm(3-7/8inch)

T-joint converging drain pipes

1.1.7 Installation of air duct

21mm(7/8inch)

Item

Model

Supply Air Outlet

Return Air Inlet

A B C

123(4-7/8)

736(29)

710(28)

166(6-1/2)

158(6-1/4)

818(32-1/4)

994(39-1/8)

195(7-5/8)

158(6-1/4)

818(32-1/4)

1000(39-3/8)

206(8-1/8)

158(6-1/4)

818(32-1/4)

1000(39-3/8)

206(8-1/8)

190(7-1/2)

850(33-1/2)

940(37)

286(11-1/4)

Dimensions of the Supply Air Outlet/Return Air Inlet

Figure 3-1-18 Supply Air Outlet

Figure 3-1-17

SC-18CD-UM

SC-24CD-UM

SC-36CD-UM

SC-42CD-UM

SC-48CD-UM

Figure 3-1-19 Return Air Inlet

Table 3-1-3

Unit: mm (inch)

Page 60

1.1.8 Installation of the Supply Air Duct

①. The maximum length of the duct means the maximum length of the supply air duct plus the maximum length of the

return air duct.

②. The duct is rectangular and connected with the air inlet/outlet of the indoor unit. Among all supply air outlets, at

least one should be kept open.

Rear Return Air

Rectangular Flange

Bottom Return Air

Return Air Cover Plate

Table 3-1-4 Installation of the rectangular duct

No.

Name

No.

Name

Hanger

Filter

Air Intake Pipe

Main Air

Supply Pipe

Canvas Air Pipe

Air Supply

Outlet

Air Intake

(1) Installation of the Rectangular Duct.

Figure 3-1-20

Bottom Return Air Installation only for Units 18k

(2) The default installation location of the rectangular flange is at the back and the return air cover

plate is at the bottom, as shown in Figure 3-1-21.

(3) If the bottom return air is desired, just change the place of the rectangular flange and the return air

cover plate.

(4) Connect one end of the return air duct to the return air outlet of the unit by rivets and the other to

the return air louver. For the sake of the convenience to freely adjust the height, a cutting of canvas duct will be helpful, which can be reinforced and folded by 8# iron wire.

Figure 3-1-21

(5) More noise is likely to be produced in the bottom return air mode than the backward return air

mode, so it is suggested to install a silencer and a static pressure box to minimize the noise.

(6) The installation method can be chosen with considering the conditions of the building and

Page 61

maintenance etc., as shown in Figure 3-1-22.

Supply air

Return air

Supply air

Return air

Install the return air duct(a) Install the return air duct(b)

No.

Name

No.

Name

Return Air Inlet (with filter)

Indoor unit

Canvas Duct

Supply Air Duct

Return Air Duct

Grille

Figure 3-1-22

Table 3-1-5 Installation of the return air duct

1.2 Installation of Floor Ceiling Type

1.2.1 Before Installation

After receiving the machine, please check for any transport damage. If finding any surface or internal

damage, please immediately report to the transport company or equipment company in writing.

Confirm if the installing foundation is solid. When this unit is to be installed on the metal section of the building, make sure that the electrical insulation must comply with applicable standards.

Ensure that the place of installation is far from the area where the inflammable or explosive substances are stored, thus to avoid possible explosion or fire due to leakage.

1.2.2 Installation Site

(1) Install the unit at a place where is strong enough to withstand the weight of the unit. (2) The air inlet and outlet of the unit should never be clogged so that the airflow can reach every

corner of the room.

(3) Leave service space around the unit as required in Figure 3-1-23.

Page 62

 Floor type

＞600mm

(23-5/8inch)

＞300mm(11-3/4inch)

＞1000mm(39-3/8inch)

＞1500mm(59inch)

＞600mm

(23-5/8inch)

＞600mm

(23-5/8inch)

＞600mm

(23-5/8inch)

＞200mm

(7-7/8inch)

＞2300mm

(90-1/2inch)

＞1500mm

(59inch)

＞300mm

(11-3/4inch)

Paper template

Anchor bolt

 Ceiling type

Figure 3-1-23

(4) Install the unit where the drain pipe can be easily installed. (5) The space from the unit to the ceiling should be kept as much as possible so as for more

convenient service.

1.2.3 Indoor Unit Installation

(1) Determine the location of the hanger through the paper template, and then remove the paper

template.

(2) Insert the anchor bolts into the drilled holes, and drive the pins completely into the anchor bolts

Figure 3-1-24

Page 63

with a hammer.

Remove the screw

Left side panel

Wall

Paper template

Right side panel

(3) Firstly unfix two buckles on the grille as shown on the picture. Remove the screws under the

buckles by a screwdriver and then open the inlet grille.

Figure 3-1-25

(4) Remove the screws shown on the picture. Push the side plate as per the arrowed direction and

take it down.

 Floor type

Figure 3-1-26

(5) Put the hanger bolt into the clasp of the indoor unit and tighten screws on the hanger to prevent

the indoor unit from moving.

(6) Reinstall and tighten the right and left side panels.

Figure 3-1-27

Page 64

 Ceiling type

≥40(1-5/8inch)

Ceiling

Suspension bolt

Nut

Spring washer

Left side panel

Nut

Hanger

Right side panel

Horizontal tester

Figure 3-1-28

(7) Adjust the height of the unit to make the drain pipe slant slightly downward so that the drainage

will become much smoother.

1.2.4 Leveling

The water level test must be done after installing the indoor unit to make the unit is horizontal, as shown below.

Figure 3-1-29

Page 65

1.2.5 Dimension Data

Model

A B C D H

1220(48)

225(8-7/8)

1160(45-5/8)

280(11)

700(27-1/2)

1420(55-7/8)

245(9-5/8)

1355(53-1/4)

280(11)

700(27-1/2) 1700(66-7/8)

245(9-5/8)

1635(64-3/8)

280(11)

700(27-1/2)

Extension drain piping (commercially available)

Insulating tube

(commercially available)

Insulating tape (accessory)

Indoor unit drain hose

Figure 3-1-30

Table 3-1-6

Unit: mm (inch)

SC-18FM-UM

SC-24FM-UM

SC-36FM-UM

SC-42FM-UM

SC-48FM-UM

1.2.6 Drain Piping Work

1.2.6.1 Precautions When Doing the Piping Work

(1) Keep piping as short as possible and slope it downwards at a gradient of at least 1/100 so that air

may not remain trapped inside the pipe. (2) Keep pipe size equal to or greater than that of the connecting pipe. (3) Install the drain piping as shown and take measures against condensation. Improperly rigged

piping could lead to leaks and eventually wet furniture and belongings.

Figure 3-1-31

Page 66

(4) Connect the drain hose (Figure 3-1-32).

Drain hose must

slope downward.

Allow no trap to form in the piping

Do not allow end

of hose to touch water

1 2

Drain pan

≤4mm(1/8inch)

Seal Drain hose

Figure 3-1-32

1.2.6.2 Installing the Drain Pipes

(1) For determining the position of the drain hose, perform the following procedures. (2) Insert the drain pipe to the drain outlet of the unit and then tighten the clamp securely with tape

(Figure 3-1-33).

(3) Connect the extension drain pipe to the drain pipe and then tighten the clamp with tape.

Figure 3-1-33 Figure 3-1-34 Figure 3-1-35 Tighten the clamp until the screw head is less than 4mm (1/8inch) from the hose (Figure 3-1-34). ①- Metal clamp ②- Drain hose ③- Grey tape Insulate the pipe clamp and the drain hose using heat insulation sponge ( Figure 3-1-35). ①- Metal clamp ②- Insulation sponge

Step 1 to Step 3 have been finished by the manufacturer.

Note:

(4) When drain hose requires extension, obtain an extension hose commercially available. (5) After connecting the local drain hose, tape the slits of the heat insulation tube. (6) Connect the drain hose to the local drain pipe. Position the inter connecting wire in the same

direction as the piping.

1.2.6.3 Connecting the Drain Hose

(1) Connect the extension auxiliary pipe to the local piping. (2) Prepare the local piping at the connection point for the drain pipe, as shown in the installation

drawings.

Note:

direction.

Be sure to place the drain hose as shown in the diagram below, in a downward sloping

Page 67

Drain pan

Drain hose

①Right side piping②Bottom-right piping

Figure 3-1-36

Ceiling type Floor type

1.2.6.4 Testing of Drain Piping

(1) After piping work is finished, check if drainage flows smoothly. (2) As shown in the figure, pour water into the drain pan from the right side to check that water flows

smoothly from the drain hose.

Figure 3-1-37

1.3 Installation of Cassette Type

1.3.1 Before Installation

After receiving the machine, please check for any transport damage. If finding any surface or internal

damage, please immediately report to the transport company or equipment company in writing.

After receiving the machine, please check the unit and accessories in reference to the packing list.

Ensure that the model is correct and the machine is in good condition. Please also check if the specification and quantity of accessory parts are correct.

Determine the correct handling route and methods, thus to avoid damaging the unit or causing

possible hazard. For the sake of protection and safety, it is suggested to move the unit with the packaging box. Even though it is not permitted to do like this under special occasions, do not remove the packaging box, thus to avoid loosening or falling during handling.

Confirm if the installing foundation is solid. When this unit is to be installed on the metal section of the

building, make sure that the electrical insulation must comply with applicable standards.

Ensure that the place of installation is far from the area where the inflammable or explosive

substances are stored, thus to avoid possible explosion or fire due to leakage.

Page 68

1.3.2 Installation Site

>20mm(3/4inch)

≥1500mm

(59inch)

≥2500mm(98-3/8inch)

≥1500mm

(59inch)

Models

mm (inch)

255(10)

260(10-1/4)

340(13-3/8)

320(12-5/8)

Select an installation site where the following conditions are fulfilled and that meets your customer's

approval.

(1) Obstruct should be put away from the intake or outlet vent of the indoor unit so that the airflow can

be blown through all the room.

(2) Make sure that the installation meets the requirement of the schematic diagram of installation

spaces.

(3) Select the place where can stand 4 times of the weight of the indoor unit and would not increase

the operating noise and vibration. (4) The horizontality of the installation place should be guaranteed. (5) Select the place where is easy to drain out the condensate water, and connect with outdoor unit. (6) Make sure that there are enough space for care and maintenance, and the height fall between the

indoor unit and ground is above 1800mm (6ft). (7) When installing the suspension bolt, check if the installation place can stand 4 times of the weight

of the unit. If not, reinforce it before installation.

Note:

There will be large amount of greasy dirt accumulated on the fan, heat exchanger and water

pump located in the dinning room and kitchen, which would reduce the capacity of the heater exchanger, lead to leakage and abnormal operation of the water pump.

Figure 3-1-38

Table 3-1-7

SC-18CC-UM

SC-24CC-UM

SC-36CC-UM

SC-42CC-UM

SC-48CC-UM

Page 69

1.3.3 Installing the Main Body Unit

Nut(field supplied)

Gas(attachment)

Hoisting stand

Tighten(double nuts)

[Fix the hoisting stand firmly]

Insert

Gasket anchor board(attachment)

[Fix the gasket firmly]

Center of the ceiling opening

Water level

Polyethylene pipe

Bolt(attachment) [Fix the paper template]

Bolt(attachment)

paper template

One bolt located at one corner of the outlet pipe should be fixed on one corner of the drainage slot.

60 to 70mm(2-3/8 to 2-3/4inch)

φ12.7mm(1/2inch)

Drilling position for bolts

Figure 3-1-39

(1) Install the hoisting stand on the hoisting screw by using nuts and gaskets at both the upper and

lower sides of the hoisting stand. To prevent the gasket from breaking off, a gasket anchor board

can be helpful. (2) Install the paper template on the unit, and fix the drain pipe at the outlet vent. (3) Adjust the unit to the best position. (4) Check if the unit is installed horizontally at four directions. If not, the water pump and the float

switch would function improperly and even lead to water leakage. (5) Remove the gasket anchor board and tighten the nut remained. (6) Remove the paper template.

1.3.4 Installing the Suspension Bolts

(1) Using the installation template, drill holes for bolts (four holes) (Figure 3-1-40). (2) Install the bolts to the ceiling at a place strong enough to hang the unit. Mark the bolt positions

from the installation template. With a concrete drill, drill for 12.7mm (1/2inch) diameter holes

(Figure 3-1-41). (3) Insert the anchor bolts into the drilled holes, and drive the pins completely into the anchor bolts

with a hammer (Figure 3-1-42).

Figure 3-1-40 Figure 3-1-41 Figure 3-1-42

Page 70

1.3.5 Leveling

Horizontal tester

The water level test must be done after installing the indoor unit to make the unit is horizontal, as

shown below.

Figure 3-1-43

1.3.6 The Panel Installation

(1) See the figure below for the relationship of the front panel and the connecting pipe.

Figure 3-1-44

(2) Place the panel at the unit, and latch the hooks beside and opposite the swing flap motor. (3) Latch other two hooks. (4) Tighten four hexagonal screws under the latches about 15mm (5/8inch). (5) Adjust the panel along the direction indicated by the arrow as shown in Figure 3-1-45. (6) Tighten the screws until the thickness of the sealing material between the panel and the indoor

unit reduces to 5-~8mm (1/4~3/8inch).

Page 71

5~8mm(1/4~3/8inch)

Latch

Piping position

Hook

Swing flap motor

Indoor unit

Ceiling

Air outlet

Panel

Indoor unit

①

②

③

④

⑤

Figure 3-1-45

Air leak

Condensate

No gap is allowed

Adjustment of the indoor unit body from the holes in the corner of the panel is possible if the indoor unit can always be kept horizontal and the drain pipe etc. will be unaffected.

(7) Improper screwing of the screws may cause the troubles shown in Figure 3-1-46.

Figure 3-1-46

(8) If gap still exists between ceiling and decoration panel after tightening the screws, readjust the

height of the indoor unit (Figure 3-1-47).

Figure 3-1-47

Page 72

(9) Wire the swing flap motor as shown in Figure 3-1-48.

Connect them to the main body according to the size of terminals

Bottom face of ceiling

Item

Model

A B C D E F G H I

670

(26-3/8)

595

(23-1/2)

590

(23-1/4)

575

(22-5/8)

145

(5-3/4)

240

(9-1/2)

665

(26-1/8)

235

(9-1/4)

575

(22-5/8)

505

(19-7/8)

G B

Bottom face of ceiling

Figure 3-1-48

1.3.7 Dimension Data

For the units: 18k

SC-18CC-UM

For the units: 24k~42k

Table 3-1-8 Unit: mm (inch)

Table 3-1-9

Page 73

Item

Model

A B C D E F G H I

950

(37-3/8)

840

(33-1/8)

780

(30-3/4)

680

(26-3/4)

160

(6-1/4)

240

(9-1/2)

915

(36-1/8)

215

(8-1/2)

995

(39-1/8)

950

(37-3/8)

840

(33-1/8)

780

(30-3/4)

680

(26-3/4)

160

(6-1/4)

320

(12-5/8)

915

(36-1/8)

215

(8-1/2)

995

(39-1/8)

950

(37-3/8)

840

(33-1/8)

780

(30-3/4)

680

(26-3/4)

160

(6-1/4)

320

(12-5/8))

915

(36-1/8))

215

(8-1/2)

995

(39-1/8)

Bottom face of ceiling

Item

Model

A B C D E

1040(41)

910(35-7/8)

840(33-1/8)

790(31)

170(6-3/4)

290(11-3/8)

Extension drain piping

(commercially available)

Insulating tube (commercially available)

Indoor unit

drain hose

Insulating tape

(accessory)

(For the units: 24k~42k Con't)

SC-24CC-UM

SC-36CC-UM

SC-42CC-UM

For the units: 48k

Unit: mm (inch)

Figure 3-1-49

Table 3-1-10

Unit: mm (inch)

SC-48CC-UM

1.3.8 Installation of Drain Piping

(1) Keep piping as short as possible and slope it downwards at a gradient of at least 1/100 so that air

piping could lead to leaks and eventually wet furniture and belongings.

Figure 3-1-50

Page 74

1.3.9 Installing the Drain Pipes

≤ 4mm(1/8inch)

1 2

Tighten the clamp until the screw head is less then 4mm (1/8inch) from the hose.

① Metal clamp (accessory) ② Insulation sponge (accessory)

Insulate the pipe clamp and the drain hose using heat insulation sponge.

① Metal clamp ② Drain hose (accessory) ③ Grey tape (accessory)

T-joint converging drain pipes

≥100mm(3-7/8inch)

T-joint converging drain pipes

0~1000mm(0~39-3/8inch)

(1) Insert the drain pipe to the drain outlet of the unit and then tighten the clamp securely with tape. (2) Connect the extension drain pipe to the drain pipe and then tighten the clamp with tape.

(3) When unifying multiple drain pipes, install the pipes as Figure 3-1-51. Select converging drain

pipes whose gauge is suitable for the operating capacity of the unit (take the cassette type unit for

example).

(4) When the drain hose cannot keep a sufficient gradient, it is necessary to fit a riser pipe (field

supplied) to it. (5) If the air flow of indoor unit is high, this might cause negative pressure and result in return suction

of outdoor air. Therefore, U-type water trap shall be designed on the drainage side of each indoor

unit (Figure 3-1-52). (6) Install one water trap for each unit. (7) Installation of water trap shall consider easy cleaning in the future.

Figure 3-1-51

Page 75

Indoor unit

Joint

Indoor unit

H/2

Joint

Figure 3-1-52 Figure 3-1-53 Figure 3-1-54

3-way connection of drainage pipe joint

Connection of drain elbow

Connection of horizontal pipe

Drain lift pipe

≤1000mm(39-3/8inch)

≤300mm(11-3/4inch)

1000~1500mm(39-3/8~59inch)

Drain hose (attachment)

Ceiling

Clamp (attachment)

Hoisting stand

Roof

(8) Connection of drainage branch pipe to the standpipe or horizontal pipe of drainage main pipe. (9) The horizontal pipe cannot be connected to the vertical pipe at a same height. It can be connected

in a manner as shown below:

NO.1: Attach the 3-way connection of the drainage pipe joint as shown in Figure 3-1-55. NO.2: Attach the drain elbow as shown in Figure 3-1-56. NO.3: Attach the horizontal pipe as shown in Figure 3-1-57.

Figure 3-1-55 Figure 3-1-56 Figure 3-1-57

1.3.10 Precautions When Doing Riser Piping Work

(1) Make sure that heat insulation work is executed on the following 2 spots to prevent any possible

water leakage due to dew condensation.

1) Connect the drain hose to the drain lift pipe, and insulate them.

2) Connect the drain hose to the drain outlet on the indoor unit, and tighten it with the clamp.

(2) Make sure the lift pipe is at most 280mm (11inch). (3) Stand the lift pipe vertically, and make sure it is not further than 300mm (11-3/4inch) from the

Figure 3-1-58

Page 76

base of the drain outlet.

1~1.5m(3-2/7~5feet)

× (wrong)

√ (Correct) 1/100 or more gradient

≤75mm(3inch)

≤1000mm(39-3/8inch)

Drain hose(attachment)

Drain hose Test hole cover

Test hole

Plastic water pot [The length of the pipe should be about

100mm(3-7/8inch)].

Above 100mm(3-7/8inch)

Drain vent for repair use (plastic stopper is included) (drain the water in waterspoit by this outlet vent)

(4) Secure a downward gradient of 1/100 or more for the drain pipe. To accomplish this mount

supporting brackets at an interval of 1~1.5m (3-2/7~5feet).

Figure 3-1-59

(5) The incline of attached drain hose should be 75mm (3inch) or less so that the drain outlet does

not have to withstand additional force.

1.3.11 Testing of Drain Piping

After piping work is finished, check if drainage flows smoothly. Shown in the Figure 3-1-61, Add

approximately 1liter of water slowly into the drain pan and check drainage flow during COOL running.

Figure 3-1-60

Figure 3-1-61

Page 77

2 OUTDOOR UNIT INSTALLATION

①. Install the unit where it will not be tilted by more than 5°.

②. During installation, if the outdoor unit has to be exposed to strong wind, it must be fixed securely.

2.1 Before Installation

After receiving the machine, please check for any transport damage. If finding any surface or internal

damage, please immediately report to the transport company or equipment company in writing.

Confirm if the installing foundation is solid. When this unit is to be installed on the metal section of the building, make sure that the electrical insulation must comply with applicable standards.

Ensure that the place of installation is far from the area where the inflammable or explosive substances are stored, thus to avoid possible explosion or fire due to leakage.

2.2 Installation Site

If possible, do not install the unit where it will be exposed to direct sunlight. (If necessary, install a blind that does not interfere with the air flow.)

(1) Install the outdoor unit in a place where it will be free from being dirty or getting wet by rain as

much as possible. (2) Install the outdoor unit where it is convenient to connect with the indoor unit. (3) Install the outdoor unit where the condensate water can be drained out freely during heating

operation. (4) Do not place animals and plants in the path of the warm air. (5) Take the air conditioner weight into account and select a place where noise and vibration are

small. (6) Install the outdoor unit where is capable of withstanding the weight of the unit and generates as

less noise and vibration as possible. (7) Provide the space shown in Figure 3-2-1, so that the air flow is not blocked. Also for efficient

operation, leave three of four directions of peripheral constructions open.

Page 78

＞500mm

(1-2/3feet)

＞2000mm

(6-5/9feet)

＞500mm

(1-2/3feet)

＞500mm

(1-2/3feet)

＞500mm

(1-2/3feet)

＞2000mm

(6-5/9feet)

＞1000mm

(3-2/7feet)

Figure 3-2-1

D A

2.3 Caution for Installation

The outdoor unit shall be so installed that the air discharged out of the outdoor unit will not flow back

and that enough space shall be maintained around the machine for repair;

The installing position shall be in good ventilation, so that the machine can breathe and exhaust enough air. Ensure that there is no obstruction at the inlet and outlet of the machine. If any, please remove the obstructions blocking the air inlet and outlet.

If the outdoor unit is installed on concrete or solid ground, it shall be fixed by using M10 bolts and nuts. And ensure that the machine is kept vertical and horizontal.

The outdoor unit must be lifted by using the designated lift hole. During lifting, take care to protect the air conditioner and avoid knocking the metal parts, thus to prevent rusting in the future.

To meet the noise and vibration requirements, the outdoor unit shall be installed by using rubber damping pad or spring damper.

To install the drainage pipe, please insert the drainage joint to the drainage hole on the outdoor chassis and connect a drainage pipe on the drainage joint. (The installing height of outdoor unit shall be at least 5cm (2inch) if drainage joint is to be used).

To insert the pipe through the wall, the wall-cross tube must be installed.

The installing dimension shall comply with the installation requirements in these instructions. The outdoor unit must be fixed at the installing position.

The installation shall be done by specialist technicians.

2.4 Dimension Data

Figure 3-2-2

Page 79

Table 3-2-1

Item

Model

A B C D E

955

(37-5/8)

395

(15-5/8)

700

(27-1/2)

560 (22)

360

(14-1/8)

980

(38-5/8)

425

(16-3/4)

790

(31-1/8)

610 (24)

390

(15-1/2)

1105

(43-5/8)

440

(17-3/8)

1100

(43-1/4)

630

(24-7/8)

400

(15-3/4)

960

(37-3/4)

410

(16-1/4)

1350

(53-1/8)

570

(22-1/2)

375

(14-3/4)

90°±1°

Extend the pipe by unwinding it

√

Unit: mm (inch)

SC-18Z-UM

SC-24Z-UM

SC-36Z-UM

SC-42Z-UM

SC-48Z-UM

3 REFRIGERATION PIPING WORK

3.1 Refrigeration Piping Work Procedures and Caution in Connecting

3.1.1 Flare Processing

(1) Cut the connection pipe with the pipe cutter and remove the burrs. (2) Hold the pipe downward to prevent cuttings from entering the pipe. (3) Remove the flare nuts at the stop valve of the outdoor unit and inside the accessory bag of the

indoor unit, then insert them to the connection pipe, after that, flare the connection pipe with a flaring tool.

(4) Check if the flare part is spread evenly and there are no cracks (see Figure 3-3-1).

Figure 3-3-1

3.1.2 Bending Pipes

(1) The pipes are shaped by your hands. Be careful not to collapse them.

Figure 3-3-2

(2) Do not bend the pipes in an angle more than 90°. (3) When pipes are repeatedly bent or stretched, the material will harden, making it difficult to bend or

Page 80

stretch them any more. Do not bend or stretch the pipes more than three times.

Pipe

Cutter Cutt line

Heat insulating

pipe

①. To prevent breaking of the pipe, avoid sharp bends. Bend the pipe with a radius of curvature of 150mm (5-7/8inch)

or over.

②. If the pipe is bent repeatedly at the same place, it will break.

①. Be sure to apply the pipe against the port on the indoor unit correctly. If the centering is improper, the flare nut

cannot be tightened smoothly. If the flare nut is forced to turn, the threads will be damaged.

②. Do not remove the flare nut until the connection pipe is to be connected so as to prevent dust and impurities from

coming into the pipe system.

(4) When bending the pipe, do not bend it as is. The pipe will be collapsed. In this case, cut the heat

insulating pipe with a sharp cutter as shown in Figure 3-3-3, and bend it after exposing the pipe. After bending the pipe as you want, be sure to put the heat insulating pipe back on the pipe, and secure it with tape.

Figure 3-3-3

3.1.3 Connecting the Pipe at the Indoor Unit Side

Detach the caps and plugs from the pipes.

When connecting the pipe to the unit or removing it from the unit, please do use both the spanner and the torque wrench (Figure 3-3-4).

When connecting, smear both inside and outside of the flare nut with refrigeration oil, screw it hand tight and then tighten it with the spanner.

Refer to Table 3-3-1 to check if the wrench has been tightened properly (too tight would mangle the nut and lead to leakage).

Examine the connection pipe to see if it leaks, then take the treatment of heat insulation, as shown in the Figure 3-3-4.

Use the medium-sized sponge to insulate the coupler of the gas pipe.

Page 81

Sponge

Threaded fastener(×4)

Liquid pipe

Gas inlet pipe

Heat insulation sheath (for the gas tube)

Heat insulation sheath (for the liquid tube)

Figure 3-3-4

Pipe Diameter

Tightening Torque

6mm (1/4inch)

15~30N·m (11~22ft.-1b.)

9.5mm (3/8inch)

35~40N·m (26~29ft.-1b.)

12.7mm (1/2inch)

45~50N·m (33~37ft.-1b.)

16mm (5/8inch)

60~65N·m (44~48ft.-1b.)

Be sure to connect the gas pipe after connecting the liquid pipe completely.

Gas pipe

Liquid pipe

Pipe

coupling

or or

3-way valve 2-way valve

Table 3-3-1 Flare nut tightening torque

3.1.4 Connecting the Pipe at the Outdoor Side Unit

Tighten the flare nut of the connection pipe at the outdoor unit valve connector. The tightening method is the same as that as at the indoor side.

Figure 3-3-5

Page 82

3.1.5 Checking the Pipe Connections for Gas Leaking

Front outlet

Coupler heat insulation (small) on the pipe

Liquid pipe

Gas pipe

Reference A

Coupler heat insulation (large) on the pipe

Heat insulation pipe

Reference A:

Cover this portion with heat

insulating material also without fail

No gap

Do not purge the air with refrigerants but use a vacuum pump to vacuum the installation! There is no extra refrigerant in the outdoor unit for air purging!

For both indoor and outdoor unit side, check the joints for gas leaking by the use of a gas leakage detector without fail when the pipes are connected.

3.1.6 Heat Insulation on the Pipe Joints (Indoor Side Only)

Stick coupler heat insulation (large and small) to the place where connecting pipes.

Figure 3-3-6

3.1.7 Vacuum and Gas Leakage Inspection

3.1.7.1 Vacuum

(1) Remove the caps of the liquid valve, gas valve and also the service port. (2) Connect the hose at the low pressure side of the manifold valve assembly to the service port of

the unit’s gas valve, and meanwhile the gas and liquid valves should be kept closed in case of

refrigerant leak. (3) Connect the hose used for evacuation to the vacuum pump. (4) Open the switch at the lower pressure side of the manifold valve assembly and start the vacuum

pump. Meanwhile, the switch at the high pressure side of the manifold valve assembly should be

kept closed, otherwise evacuation would fail. (5) The evacuation duration depends on the unit’s capacity, generally, 20 minutes for the 18k units,

30 minutes for the 24k/30k/36k units, 45 minutes for the 42k/48k units. And verify if the pressure

gauge at the low pressure side of the manifold valve assembly reads -1.0MPa (145psig), if not, it

indicates there is leak somewhere. Then, close the switch fully and then stop the vacuum pump. (6) Wait for some time to see if the system pressure can remain unchanged, 3 minutes for the

18k/24k units, 10 minutes for the 30k/36k/42k/48k units. During this time, the reading of the

pressure gauge at the low pressure side can not be larger than 0.005MPa (0.72psig).

Page 83

(7) Slightly open the liquid valve and let some refrigerant go to the connection pipe to balance the

Hose with the valve pin

gauge manifold

Pressure gauge (Low-pressure)

Pressure gauge (Hi-pressure)

Switch (Low-pressure)

Switch (Hi-pressure)

Connection pipe (to indoor unit)

Liquid valve

Gas valve

Service port

Cap

Hose

Vacuum pump

Cap

Service pipe

Cap

Connection pipe

Item

Model

Additional Refrigerant Amount for

Extra Pipe

18k

45g per 1.5 m (1.6 ounce per 5 feet )

24k~48k

90g per 1.5 m (3.2 ounce per 5 feet )

pressure inside and outside of the connection pipe, so that air will not come into the connection

pipe when removing the hose. Note that the gas and liquid valve can be opened fully only after the

manifold valve assembly is removed. (8) Place back the caps of the liquid valve, gas valve and also the service port.

Note:

For the large-sized unit, it has the service port for both the gas valve and the liquid valve.

During evacuation, it is available to connect two hoses of the manifold valve assembly to two service ports to quicken the evacuating speed.

3.1.7.2 Additional Charge

Refrigerant suitable for a piping length of 7.6m (25feet) is charged in the outdoor unit at the factory.

When the piping is longer than 7.6m (25feet), additional charging is necessary.

For the additional amount, see Table 3-3-2.

When the height difference between the indoor unit and outdoor unit is larger than 10m (32-4/5feet),

Figure 3-3-7

Table 3-3-2

Page 84

an oil bend should be employed for every 6m (19-2/3 feet).

Oil bend

Indoor

Outdoor

6m(19-2/3feet)

Oil bend

Item

Model

Size of Fitting Pipe

mm (inch)

Max. Pipe

Length

m (feet)

Max. Height Difference

between Indoor Unit and

Outdoor Unit

m (feet)

Drainage pipe(Outer

Diameter × wall

thickness) mm (inch)

Liquid

Gas

6(1/4)

12.7(1/2)

50(164)

15(49-1/5)

Φ17X1.75

(Φ5/8 X 7/100)

50(164)

15(49-1/5)

Φ17X1.75

(Φ5/8 X 7/100)

①. Before obtaining access to terminals, all supply circuits must be disconnected.

②. The rated voltage of the unit is as shown as Table 1-4-1 and Table 1-4-2

③. Before turning on, verify that the voltage is within the 187~252V range (for single phrase units).

④. Always use a special branch circuit and install a special receptacle to supply power to the air conditioner.

⑤. Use a special branch circuit breaker and receptacle matched to the capacity of the air conditioner.

⑥. The special branch circuit breaker is installed in the permanent wiring. Always use a circuit that can trip all the poles

of the wiring and has an isolation distance of at least 3mm (1/8inch) between the contacts of each pole.

Figure 3-3-8

3.2 Specification of Connection Pipe

Table 3-3-3

SC-18Z-UM

SC-24Z-UM

SC-36Z-UM 50(164) 15(49-1/5)

SC-42Z-UM

SC-48Z-UM

9.5(3/8) 16(5/8)

50(164) 15(49-1/5)

70(229.7) 15(49-1/5)

Φ17X1.75

(Φ5/8 X 7/100)

Φ17X1.75

(Φ5/8 X 7/100)

Φ17X1.75

(Φ5/8 X 7/100)

The connection pipe should be insulated with proper water-proof insulating material.

The pipe wall thickness shall be 0.5~1.0mm (1/50~1/25inch) and the pipe wall shall be able to withstand the pressure of 6.0MPa (870psig). The longer the connecting pipe, the lower the cooling and heating effect performs.

4 ELECTRIC WIRING WORK

4.1 Wiring Precautions

Page 85

⑦. Perform wiring work in accordance with standards so that the air conditioner can be operated safely and positively.

⑧. Install a leakage special branch circuit breaker in accordance with the related laws and regulations and electric

company standards.

①. The power source capacity must be the sum of the air conditioner current and the current of other electrical

appliances. When the current contracted capacity is insufficient, change the contracted capacity.

②. When the voltage is low and the air conditioner is difficult to start, contact the power company to raise the voltage.

4.2 Electrical Wiring

10mm(3/8inch)

A Solid wire B Strand wire

Solderless terminal

Insulation layer

25mm(1inch)

Screw with special washer

Round terminal

Terminal board

Screw with special washer

Round terminal

Wire

Insulation tube

Cord clamp

(1) For solid core wiring (Figure 3-4-1)

1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip the insulation about 25mm (1 inch).

2) Using a screwdriver, remove the terminal screw(s) on the terminal board.

3) Using pliers, bend the solid wire to form a loop suitable for the terminal screw.

4) Shape the loop wire properly, place it on the terminal board and tighten securely with the terminal screw using a screwdriver.

(2) For strand wiring (Figure 3-4-1).

1) Cut the wire end with a wire cutter or wire-cutting pliers, then strip the insulation about 10mm (3/8inch).

2) Using a screwdriver, remove the terminal screw (s) on the terminal board.

3) Using a round terminal fastener or pliers, securely clamp a round terminal to each stripped wire end.

4) Position the round terminal wire, and replace and tighten the terminal screw with a screwdriver (Figure 3-4-2).

Figure 3-4-1

Page 86

Figure 3-4-2 Figure 3-4-3

①. Before starting work, check that power is not being supplied to the indoor unit and outdoor unit.

②. Match the terminal block numbers and connection cord colors with those of the indoor unit side. Erroneous wiring

may cause burning of the electric parts.

③. Erroneous wiring may cause burning of the electric parts

④. Connect the connection cords firmly to the terminal block. Imperfect installation may cause a fire.

⑤. Always fasten the outside covering of the connection cord with cord clamps. (If the insulator is not clamped, electric

leakage may occur.)

⑥. Always connect the ground wire.

Outdoor Unit

Indoor Unit

2 2

L1 L2

Breaker

Power:208/230V~60Hz

L1 L2

Breaker

Power:208/230V~60Hz

L1L2 F

L1 L2

Power:208/230V~60Hz

Breaker

Outdoor Unit

1 2

Indoor Unit

L1 L2

Breaker

Power:208/230V~60Hz

L1 L2

(3) How to fix connection cord and power cord by cord clamp

After passing the connection cord and power cord through the insulation tube, fasten it with the cord

clamp (Figure 3-4-3).

(4) Electric wiring between the indoor and outdoor units

 Duct Type Unit:

Single-phase units (18k~24k)

Single-phase units (36k~48k)

Page 87

 Cassette Type Unit:

Outdoor unit

Indoor unit

Breaker

Power:208/230V ~ 60Hz

1 2

Outdoor unit

Indoor unit

Breaker

Power:208/230V ~ 60Hz

L1L2

Outdoor unit

Indoor unit

Breaker

Power:208/230V ~ 60Hz

L1L2

Single-phase units: 18k

Single-phase units: 24k

Single-phase units: 36k~42k

Page 88

Single-phase units: 48k

Outdoor unit

Indoor unit

Breaker

Power:208/230V ~ 60Hz

1 2

G G

Breaker

Outdoor Unit

Indoor Unit

Power: 208/230V ~ 60Hz Power: 208/230V ~ 60Hz

Breaker

1 2

G G

Outdoor Unit

Indoor Unit

Power: 208/230V ~ 60Hz Power: 208/230V ~ 60Hz

 Floor ceiling Type Unit:

Single-phase units (18k~24k)

Single-phase units (36k~48k)

Figure 3-4-4

Page 89

(5) Electric wiring of indoor unit side

Electric box

sub-assy

Electric box

cover

L1 L2

F C O

H1 H2

1 2

Power supply terminal board

Electric box cover

Communication

terminal board

H1H2

18k

L1 L2

H1 H2

1 2

24k~42k

Remove the electric box cover from the electric box sub-assy and then connect the wire.

 Duct Type Unit:

Figure 3-4-5

The F, C, O connect to the COMMOM, CLOSE and OPEN terminal of the fresh air valve respectively.

 Cassette Type Unit:

For the units: 18k~42k

Page 90

For the units: 48k

Electric box cover

Left side panel

①. The power cord and the wire of the fresh air valve are high-voltage, while the communication cord and connection

wire of the wired controller are low-voltage. They should run separately against electromagnetic interference.

②. The high-voltage and low-voltage lines should pass through the rubber rings at different electric box covers.

③. Do not bundle the connection wire of the wired controller and the communication cord together, or arrange them in

parallel, otherwise improper operation would occur.

 Floor Ceiling Type Unit:

Figure 3-4-6

Figure 3-4-7

Page 91

④. The high-voltage and low-voltage lines should be fixed separately and securely, with internal big clamps for the

former and small clamps for the latter.

⑤. Tighten the indoor/outdoor connection cord and power cord respectively on the terminal boards with screws. Faulty

connection may cause a fire.

⑥. If the indoor unit connection cord (to the outdoor unit) and power supply are wired incorrectly, the air conditioner

may be damaged.

⑦. Connect the indoor unit connection cord properly based on the corresponding marks as shown in Figure 3-4-4.

⑧. Ground both the indoor and outdoor units by attaching a ground wire.

⑨. Unit shall be grounded in compliance with the applicable local and national codes.

(6) Electric wiring of outdoor unit side

18k~30k 36k~48k

L1 L2

NOTICE! When connecting the power supply cord, make sure that the phase of the power supply

matches with the exact terminal board. If not, the compressor will rotate reversely and run improperly.

Remove the big handle (18k~30k) /front board (36k~48k) of the outdoor unit and insert the end of the

communication cord and the power cable into the terminal board.

Single phase:

Figure 3-4-8

Page 92

MAINTENANCE

No.

Error code

Malfunction

name

Origin of

malfunction

signal

Control description

High pressure

protection

High pressure

switch

When outdoor unit detects the high pressure switch is cut off for 3s successively, high pressure protection will occur. All the loads (except the 4-way valve in heating mode) will be switched off. In this case, all the buttons and remote control signals except ON/OFF button will be disabled and cannot be recovered automatically. Switch off the unit or re-energize the unit after cutting off power to eliminate this protection.

Freeze protection

Indoor

evaporator

temperature

sensor

If detecting that the evaporator temperature is lower than protective temp. value after the unit has been running for a period of time under cooling or dry mode, the unit will report this fault, in which case the compressor and outdoor fan motor will be stopped. The unit will not run until evaporator temperature is higher than the protective temp. value and the compressor is stopped for 3min.

Low pressure

protection

Low pressure

switch

If it is detected within 30s successively that the low-pressure switch is cut off under ON or standby state, the unit will report low pressure protection. If the fault occurs successively 3 times within 30min, the unit cannot be recovered automatically.

Refrigerant

lacking protection

If the unit reports system refrigerant lacking within 10min after turning on the unit, the unit will stop operation. If the fault occurs successively 3 times, the unit cannot be recovered automatically.

Refrigerant

recycling mode

If enter refrigerant recycling mode through special operation, E3 will be displayed. After exiting refrigerant recycling mode, the code will disappear.

Compressor high

discharge

temperature

protection

Compressor

discharge

temperature is

high

If outdoor unit detects that the discharge temperature is higher than protective temp. value, the unit will report high discharge temperature protection. If the protection occurs over 6 times, the unit cannot be recovered automatically. Switch off the unit or re-energize the unit after cutting off power to eliminate this protection.

Communication

malfunction

Communication between indoor

and outdoor main

board

If the outdoor unit does not receive data from indoor unit, communication malfunction will be reported. If there is communication abnormity between display board and indoor unit, communication malfunction will be reported too.

Malfunction of

indoor fan motor

Indoor fan motor

If the indoor unit does not receive signal from indoor fan motor for 30s successively when the fan motor is operating, indoor fan motor malfunction will be reported. In this case, the unit can automatically resume operation after stopping. If the malfunction occurs 6 times within one hour, the unit cannot be recovered automatically. Switch off the unit or re-energize the unit after cutting off power to eliminate this malfunction.

1 TROUBLE TABLE

1.1 Main Control Malfunction

Table 4-1-1 Fault Display on Indoor Wired Controller

Page 93

No.

Error code

Malfunction

name

Origin of

malfunction

signal

Control description

Full water protection

Water level

switch

If cut-off of water level switch is detected for 8s successively once energized, the system will enter full water protection. In this case, switch off the unit and then switch it on to eliminate this malfunction.

Malfunction of

indoor ambient

temperature

sensor at air

return port

Indoor ambient

temperature

sensor

If the indoor ambient temperature sensor is detected of open circuit or short circuit for 5s successively, indoor ambient temperature sensor malfunction will be reported. The unit can automatically resume operation after the malfunction disappears. If indoor ambient temperature sensor malfunction occurs in fan mode, only the error code is displayed and the indoor unit can work normally.

Malfunction of

evaporator

temperature

sensor

Evaporator

temperature

sensor

If the indoor evaporator temperature sensor is detected of open circuit or short circuit for 5s successively, evaporator temperature sensor malfunction will be reported. The unit can automatically resume operation after the malfunction disappears. If evaporator temperature sensor malfunction occurs in fan mode, only the error code is displayed and the indoor unit can work normally.

Malfunction of

condenser

temperature

sensor

Condenser

temperature

sensor

If the outdoor condenser temperature sensor is detected of open circuit or short circuit for 5s successively, condenser temperature sensor malfunction will be reported. The unit can automatically resume operation after the malfunction disappears. If condenser temperature sensor malfunction occurs in fan mode, only the error code is displayed and the indoor unit can work normally.

Malfunction of

outdoor ambient

temperature

sensor

Outdoor ambient

temperature

sensor

If the outdoor ambient temperature sensor is detected of open circuit or short circuit for 5s successively, outdoor ambient temperature sensor malfunction will be reported. The unit can automatically resume operation after the malfunction disappears. If outdoor ambient temperature sensor malfunction occurs in fan mode, only the error code is displayed and the indoor unit can work normally.

Malfunction of

discharge

temperature

sensor

Discharge

temperature

sensor

If the outdoor discharge temperature sensor is detected of open circuit or short circuit for 5s successively after the compressor has been operating for 3min, outdoor discharge temperature sensor malfunction will be reported. The unit can automatically resume operation after the malfunction disappears.

Malfunction wired

controller

temperature

sensor

Wired controller

If the wired controller detects open circuit or short circuit of its temperature sensor for 5s successively, wired controller temperature sensor malfunction will be reported.

Malfunction of

outdoor drive memory chip

Outdoor drive

board

If the memory chip of outdoor drive board is broken, the unit cannot be started. The unit cannot be recovered automatically. If the malfunction cannot be eliminated after switching off the unit and then energizing the unit for several times, please replace the outdoor drive board.

Compressor

overload

protection

Compressor

overload switch

If it is detected within 3s successively that the overload switch is cut off under ON or standby state, the unit will report overload protection. If the fault occurs successively 3 times, the unit cannot be recovered automatically. Switch off the unit or re-energize the unit after cutting off power to eliminate this protection.

Page 94

No.

Error code

Malfunction

name

Origin of

malfunction

signal

Control description

Overload

protection

Evaporator

temperature,

condenser

temperature

If outdoor unit detects that the tube temperature is higher than protective temp. value, the unit will report overload protection. The unit will not restart operation until tube temperature is lower than the protective temp. value and the compressor is stopped for 3min. If the protection occurs over 6 times, the unit cannot be recovered automatically. Switch off the unit or re-energize the unit after cutting off power to eliminate this protection.

Malfunction of

outdoor fan motor

Outdoor fan

motor

If the outdoor unit does not receive signal from outdoor fan motor for 30s successively when the fan motor is operating, outdoor fan motor malfunction will be reported. In this case, the unit can automatically resume operation after stopping. If the malfunction occurs 6 times within one hour, the unit cannot be recovered automatically. Switch off the unit or re-energize the unit after cutting off power to eliminate this malfunction.

Direction changing

malfunction of

4-way valve

After the compressor starts operation in heating mode, if the outdoor unit detects the difference between evaporator temperature and indoor ambient temperature is lower than the protective value for 10min successively, direction changing malfunction of 4-way valve will be reported and the outdoor unit will stop operation. The unit can automatically resume operation in the first two malfunctions. If the malfunction occurs 3 times, the unit cannot be recovered automatically. Switch off the unit or re-energize the unit after cutting off power to eliminate this malfunction.

Communication

malfunction

between main

control and drive

Communication

between main

control board and

drive board

If the outdoor main control board does not receive data from drive board, communication malfunction between main control and drive will be reported. This malfunction can be eliminated automatically.

Malfunction of

outdoor main

control memory

chip

Outdoor main

control board

If the memory chip of outdoor main control board is broken, the unit cannot be started. The unit cannot be recovered automatically. If the malfunction cannot be eliminated after switching off the unit and then energizing the unit for several times, please replace the outdoor main control board.

Page 95

1.2 Description of Drive Malfunction

Malfunction Item

Indoor Unit Display

Outdoor unit display of dual 8 numeral

tube

DC busbar over-voltage protection

IPM or PFC over-temperature protection

Current sense circuit error

IPM or PFC temperature sensor error

Compressor current protection

DC busbar under-voltage protection

Compressor startup failure

Drive module reset

Compressor motor desynchronizing

Phase loss

Drive-to-main-control communication error

IPM protection

Compressor overload protection

AC current protection (input side)

Charging circuit error

PFC protection

HC (48k only)

DC fan error

Input AC voltage abnormality

Driving board memory chip error

Main board dual 8 numeral tube Display Codes for Outdoor Unit of 18k~48k

Page 96

2 FLOW CHART OF TROUBLESHOOTING

2.1 Troubleshooting Flow Chart of Main Control Malfunction

 E1 High Pressure Protection

Page 97

 E2 Freeze Protection

Freeze protection is normal protection but not abnormal malfunction. If freeze protection occurs frequently during operation, please check if the indoor filter is with filth blockage or if the indoor air outlet is abnormal. The user is required to clean the filter, check the air outlet and air return pipe periodically to ensure smooth air return and air outlet.

 E3 stands for three statuses:

(1) Low pressure protection; (2) Refrigerant lacking protection; (3) Refrigerant recycling mode;

1) If enter refrigerant recycling mode through special operation, the displayed E3 is not an error code. It will be eliminated when exiting refrigerant recycling mode.

2) If you do not want to have refrigerant lacking protection, you can enter the debugging mode through wired controller and then cancel the refrigerant lacking protection mode.

Page 98

 E4 Discharge Protection

Communication

malfunction

Check if the

communication wire between indoor unit and outdoor unit is

connected well

Check if there is

open circuit in the communication

wire between indoor unit and

outdoor unit

Reconnect the

communication

wire

Replace the

communication

wire

Check if the

outdoor unit is energized

Energize the

outdoor unit

Replace the mainboard

Yes

 E6 Communication Malfunction

Page 99

 E9 Full Water Protection

E9 protection

If the unit is

installed with

water pump

Yes

Replace the water pump

Short circuit the full water

protection interface on indoor

mainboard according to the circuit

diagram

Check if the water pump

works normally

Replace the full water switch

or make sure the float of full water switch works normally

Yes

Malfunction of

indoor ambient

temperature

sensor

Check if the

indoor ambient temperature

sensor on mainboard is inserted

on the needle

stand correctly

Disconnect

the temperature sensor and

measure if its resistance is

normal

Correctly insert the temperature sensor on the needle stand

Replace the

temperature sensor

Replace the indoor

mainboard

Yes

 F0 Malfunction of Indoor Ambient Temperature Sensor

Page 100

 F1 Malfunction of Evaporator Temperature Sensor

Malfunction of

evaporator

temperature

sensor

Check if the evaporator

temperature sensor on

mainboard is inserted on the

needle stand correctly

Disconnect

the temperature sensor and

measure if its resistance is

normal

Correctly insert the

temperature

sensor on the

needle stand

Replace the temperature

sensor

Replace the

indoor

mainboard

Yes

Malfunction of

condenser

temperature

sensor

Check if the condenser temperature sensor on

mainboard is inserted on the

needle stand correctly

Disconnect

the temperature sensor and

measure if its resistance is

normal

Correctly insert the temperature sensor on the needle stand

Replace the

temperature sensor

Replace the

outdoor

mainboard

Yes

100

 F2 Malfunction of Condenser Temperature Sensor

Stealth SC-18Z-UM,SC-18FM-UM Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

1.PRODUCT MODELS LIST

1.1 Outdoor Unit

1.2 Indoor Unit

2 PRODUCT DATA

2.1 Product Data of Indoor Unit

2.1.1 Duct Type

2.1.2 Cassette Type

2.1.3 Floor-ceiling Type

2.2 Operation Range

2.3 Electrical Data

3 PIPING DIAGRAM

CONTROL

4 OPERATION FLOWCHART

4.1 Cooling/Dry Operation

4.2 Heating Operation

5 WIRELESS REMOTE CONTROLLER

5.1 Operation and Display View

6 WIRED CONTROLLER

6.1 Display View

6.2 Operation View

6.2.1 Silk Screen of Buttons

6.2.2 Instruction to Function of Buttons

6.2.3 Setting of Wired Controller’s Address

6.2.3.1 Enquiry and Setting of Wired Controller’s Address

6.2.3.2 Setting of Master/Slave Wired Controller’s Address

7 OPERATION INSTRUCTION OF SPECIAL FUNCTIONS

7.1 Setting of Filter Clean Reminder Function

7.2 Low Temperature Drying Function

7.3 Lock Function

7.4 Memory Function

7.5 Door Control Function/Human Sensitive Function

7.6 Switch between Fahrenheit and Centigrade

7.7 Enquiry of Ambient Temperature

7.8 Enquiry of Historical Malfunction

7.9 Debugging Function

7.9.3 Displaying setting of freeze protection error code

7.9.4 Setting refrigerant lacking protection function

7.9.5 Selecting blowing residual heating of indoor unit

7.9.6 Mode selecting of compressor electric heating belt

7.9.7 Selecting low-power consumption mode

7.9.8 Selecting door control function

7.9.9 Selecting human sensitive function

7.9.10 Selecting long-distance monitoring or centralized controller

7.9.11 Selecting fan mode of indoor fan motor

7.9.12 Selecting compensation of temperature sensor at air return

8 INSTALLATION OF WIRED CONTROLLER

8.1 Standard Accessories

8.2 Installation Position and Requirement

8.3 Installation of Wired Controller

8.4 Removal of Wired Controller

9 TROUBLESHOOTING

9.1 Display of Error Code

10 CENTRALIZED CONTROLLER

10.1 Smart Zone Controller

10.1.1 Function

10.1.2 Outline Drawing of Press Buttons

10.1.3 Functions of Press Buttons

10.1.4 LCD of the Controller

10.1.4.1 Outline Drawing of the LCD

10.1.4.2 Introduction to Symbols on the LCD

10.1.4.3 Network Topology

10.1.4.4 Dimensions

10.2 Additional Special Functions

10.2.1 Door control function

10.2.2 Human sensitive function

10.2.3 MODBUS interface

10.2.4 Connect to interface of centralized controller:

10.2.5 Light board control:

10.2.6 Malfunction output of relay:

10.2.7 Reserved fresh air valve interface for duct type unit

10.2.8 Interface of anion generator

7.2.9 Chassis electric heating belt of outdoor unit is optional

INSTALLATION

1 INDOOR UNIT INSTALLATION

1.1 Installation of Duct Type

1.1.1 Before Installation