Change for Life
Service Manual
GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI
Service Manual
Table of Contents
Part Ⅰ : Technical Information........................................................................1
1. Summary.......................................................................................................................1
2. Specifications...........................................................................................................3
2.1 Specification Sheet............................................................................................................3
2.2 Operation Characteristic Curve.........................................................................................7
2.3 Capacity Variation Ratio According to Temperature..........................................................7
2.4 Cooling and Heating Data Sheet in Rated Frequency......................................................8
2.5 Noise Curve.......................................................................................................................8
3. Outline Dimension Diagram.........................................................................9
3.1 Indoor Unit.........................................................................................................................9
3.2 Outdoor Unit....................................................................................................................10
4. Refrigerant System Diagram..................................................................... 11
5. Electrical Part.........................................................................................................12
5.1 Wiring Diagram................................................................................................................12
5.2 PCB Printed Diagram......................................................................................................14
6. Function and Control.......................................................................................16
6.1 Remote Controller Introduction ......................................................................................16
6.2 Brief Description of Modes and Functions.......................................................................20
Part Ⅱ : Installation and Maintenance ..................................................29
7. Notes for Installation and Maintenance...........................................29
8. Installation.................................................................................................................31
8.1 Installation Dimension Diagram.......................................................................................31
8.2 Installation Parts-checking .............................................................................................33
8.3 Selection of Installation Location.....................................................................................33
8.4 Electric Connection Requirement ...................................................................................33
8.5 Installation of Indoor Unit.................................................................................................33
8.6 Installation of Outdoor Unit..............................................................................................36
8.7 Vacuum Pumping and Leak Detection............................................................................37
8.8 Check after Installation and Test Operation....................................................................37
Table of Contents
Service Manual
9. Maintenance.............................................................................................................38
9.1 Error Code List................................................................................................................38
9.2 Troubleshooting for Main Malfunction.............................................................................39
9.3 Troubleshooting for Normal Malfunction..........................................................................52
10. Exploded View and Parts List...............................................................54
10.1 Indoor Unit.....................................................................................................................54
10.2 Outdoor Unit..................................................................................................................67
11. Removal Procedure........................................................................................71
11.1 Removal Procedure of Indoor Unit................................................................................71
11.2 Removal Procedure of Outdoor Unit.............................................................................76
Appendix:.........................................................................................................................81
Appendix 1: Reference Sheet of Celsius and Fahrenheit.....................................................81
Appendix 2: Configuration of Connection Pipe......................................................................81
Appendix 3: Pipe Expanding Method....................................................................................82
Appendix 4: List of Resistance for Temperature Sensor.......................................................83
Table of Contents
Service Manual
Part Ⅰ : Technical Information
1. Summary
Indoor Unit
A5 Panel
GWH09QB-D3DNA5E/I(CB425N04300)
GWH12QC-D3DNA5E/I(CB425N04501)
A6 Panel
B2 Panel
B4 Panel
C2 Panel
A1 Panel
B8 Panel
Technical Information
1
Service Manual
Outdoor Unit
GWC09QB-D3DNA6E/O
GWH09QB-D3DNA6E/O
GWC12QC-D3DNA6E/O
GWH12QC-D3DNA6E/O
Remote Controller
YAN1F1F
Model List:
2
No
Model
Product code
Indoor model
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
GWC09QB-D3DNA6E(LC)
GWC09QB-D3DNB4E(LC)
GWC09QB-D3DNA5E(LC)
GWC09QB-D3DNC2E(LC)
GWC09QB-D3DNA1E(LC)
GWC09QB-D3DNB2E(LC)
GWH09QB-D3DNA6E(LCLH)
GWH09QB-D3DNB4E(LCLH)
GWH09QB-D3DNA5E(LCLH)
GWH09QB-D3DNA5E(LCLH)
GWH09QB-D3DNC2E(LCLH)
GWH09QB-D3DNB2E(LCLH)
GWC12QC-D3DNA6E(LC)
GWC12QC-D3DNB4E(LC)
GWC12QC-D3DNC2E(LC)
GWC12QC-D3DNA5E(LC)
GWC12QC-D3DNB2E(LC)
GWC12QC-D3DNB8E(LC)
GWC12QC-D3DNA1E(LC)
GWH12QC-D3DNA6E(LCLH)
GWH12QC-D3DNB4E(LCLH)
GWH12QC-D3DNC2E(LCLH)
GWH12QC-D3DNA5E(LCLH)
GWH12QC-D3DNA5E(LCLH)
GWH12QC-D3DNB2E(LCLH)
GWH12QC-D3DNB8E(LCLH)
CB427001900
CB434001700
CB425004600
CB439001000
CB419007300
CB432004000
CB427002200
CB434001800
CB425004300
CB425004301
CB439001100
CB432003301
CB427001800
CB434001600
CB439000800
CB425004400
CB432002500
CB438001600
CB419007100
CB427002100
CB434001300
CB439000900
CB425004500
CB425004501
CB432002600
CB438001400
GWC09QB-D3DNA6E/I
GWC09QB-D3DNB4E/I
GWC09QB-D3DNA5E/I
GWC09QB-D3DNC2E/I
GWC09QB-D3DNA1E/I
GWC09QB-D3DNB2E/I
GWH09QB-D3DNA6E/I
GWH09QB-D3DNB4E/I
GWH09QB-D3DNA5E/I
GWH09QB-D3DNA5E/I
GWH09QB-D3DNC2E/I
GWH09QB-D3DNB2E/I
GWC12QC-D3DNA6E/I
GWC12QC-D3DNB4E/I
GWC12QC-D3DNC2E/I
GWC12QC-D3DNA5E/I
GWC12QC-D3DNB2E/I
GWC12QC-D3DNB8E/I
GWC12QC-D3DNA1E/I
GWH12QC-D3DNA6E/I
GWH12QC-D3DNB4E/I
GWH12QC-D3DNC2E/I
GWH12QC-D3DNA5E/I
GWH12QC-D3DNA5E/I
GWH12QC-D3DNB2E/I
GWH12QC-D3DNB8E/I
Indoor product
Outdoor product
Outdoor model
code
code
CB427N01900
CB434N01700
CB425N04600
GWC09QB-D3DNA6E/O(LC) CB427W01900
CB439N01000
CB419N07300
CB432N04000
CB427N02200
CB434N01800
CB425N04300
GWH09QB-D3DNA6E/O(LCLH) CB427W02200
CB425N04301
CB439N01100
CB432N03301
CB427N01800
CB434N01600
CB439N00800
CB425N04400 GWC12QC-D3DNA6E/O(LC) CB427W01800
CB432N02500
CB438N01600
CB419N07100
CB427N02100
CB434N01300
CB439N00900
CB425N04500 GWH12QC-D3DNA6E/O(LCLH) CB427W02100
CB425N04501
CB432N02600
CB438N01400
Technical Information
Service Manual
2. Specifications
2.1 Specification Sheet
1.GWC09QB-D3DNA6E(LC)
2.GWC09QB-D3DNB4E(LC)
3.GWC09QB-D3DNA5E(LC)
Model
4.GWC09QB-D3DNC2E(LC)
5.GWC09QB-D3DNB2E(LC)
6.GWC09QB-D3DNA1E(LC)
1.CB427001900 2.CB434001700
Product Code
3.CB425004600 4.CB439001000
5.CB432004000 6.CB419007300
Rated Voltage
V~
208/230
Power Supply Rated Frequency
Hz
60
Phases
1
Power Supply Mode
Outdoor
Cooling Capacity(Min~Max)
Btu/h
9000(3100~9600)
Heating Capacity(Min~Max)
Btu/h
/
Cooling Power Input(Min~Max)
W
900(375~1300)
Heating Power Input(Min~Max)
W
/
Cooling Power Current
A
4
Heating Power Current
A
/
Rated Input
W
1300
Rated Current
A
5.8
Air Flow Volume(SH/H/M/L)
CFM
318/288/241/171
Dehumidifying Volume
Pint/h
1.69
EER
(Btu/h)/W
10.00
COP
(Btu/h)/W
/
SEER
16.00
HSPF
/
Application Area
yd2
14.35-21.53
1.GWC09QB-D3DNA6E/I
2.GWC09QB-D3DNB4E/I
3.GWC09QB-D3DNA5E/I
Model of indoor unit
4.GWC09QB-D3DNC2E/I
5.GWC09QB-D3DNB2E/I
6.GWC09QB-D3DNA1E/I
1.CB427N01900 2.CB434N01700
Indoor Unit Product Code
3.CB425N04600 4.CB439N01000
5.CB432N04000 6.CB419N07300
Fan Type
Cross-flow
Diameter Length(DXL)
inch
Φ3 7/8X22 13/16
Fan Motor Cooling Speed(SH/H/M/L)
r/min
1350/1200/1050/750/Fan Motor Heating Speed(SH/H/M/L)
r/min
/
Output of Fan Motor
W
20
Fan Motor RLA
A
0.215
Indoor Unit Fan Motor Capacitor
μF
1
Evaporator Form
Aluminum Fin-copper Tube
Pipe Diameter
inch
Φ3/16
Row-fin Gap
inch
2-1/16
Coil Length (LXDXW)
inch
23X7/8X10 1/2
Swing Motor Model
MP24AA
Output of Swing Motor
W
1.5
Fuse
A
3.15
Sound Pressure Level(SH/H/M/L)
dB (A)
43/38/34/28/Sound Power Level(SH/H/M/L)
dB (A)
53/48/44/38/Dimension (WXHXD)
inch
31 1/8X10 7/8X7 7/8
Dimension of Carton Box (LXWXH)
inch
34X10 9/16X13 7/8
Dimension of Package (LXWXH)
inch
34X10 11/16X14 7/16
Net Weight
Ib
19.8
Gross Weight
Ib
24.3
Technical Information
1.GWH09QB-D3DNA6E(LCLH)
2.GWH09QB-D3DNB4E(LCLH)
3.GWH09QB-D3DNA5E(LCLH)
4.GWH09QB-D3DNC2E(LCLH)
5.GWH09QB-D3DNB2E(LCLH)
1.CB427002200 2.CB434001800
3.CB425004300 CB425004301
4.CB439001100 5.CB432003301
208/230
60
1
Outdoor
9000(3100~9600)
9500(3100~12000)
900(375~1300)
800(300~1350)
4
3.6
1350
6.0
318/288/241/171
1.69
10.00
11.88
16.00
9.00
14.35-21.53
1.GWH09QB-D3DNA6E/I
2.GWH09QB-D3DNB4E/I
3.GWH09QB-D3DNA5E/I
4.GWH09QB-D3DNC2E/I
5.GWH09QB-D3DNB2E/I
1.CB427N02200 2.CB434N01800
3.CB425N04300 CB425N04301
4.CB439N01100 5.CB432N03301
Cross-flow
Φ3 7/8X22 13/16
1350/1200/1050/750/1350/1200/1050/850/20
0.215
1
Aluminum Fin-copper Tube
Φ3/16
2-1/16
23X7/8X10 1/2
MP24AA
1.5
3.15
43/38/34/28/53/48/44/38/31 1/8X10 7/8X7 7/8
34X10 9/16X13 7/8
34X10 11/16X14 7/16
19.8
24.3
3
Service Manual
Model of Outdoor Unit
Outdoor Unit Product Code
Compressor Manufacturer/Trademark
Compressor Model
Compressor Oil
Compressor Type
GWC09QB-D3DNA6E/O(LC)
GWH09QB-D3DNA6E/O(LCLH)
CB427W01900
ZHUHAI GREE DAIKIN DEVICE
CB427W02200
ZHUHAI GREE DAIKIN DEVICE
CO.,LTD
1GDY23AXD
CO.,LTD
1GDY23AXD
DAPHNE FVC50K
DAPHNE FVC50K
Swing
Swing
Compressor Locked Rotor Amp (L.R.A)
A
/
/
Compressor RLA
A
4.00
4.00
Compressor Power Input
W
Overload Protector
Throttling Method
845
845
KSD115℃ or HPC115/95
KSD115℃ or HPC115/95
Capillary
Capillary
Operation temp
ºF
60.8~86
60.8~86
Ambient temp (cooling)
ºF
0~115
0~115
Ambient temp (heating)
ºF
/
-4~75
Aluminum Fin-copper Tube
Aluminum Fin-copper Tube
Φ5/16
Φ5/16
Condenser Form
Pipe Diameter
inch
Rows-fin Gap
inch
1-1/16
1-1/16
Coil Length (LXDXW)
inch
28X3/4X20
28X3/4X20
Fan Motor Speed
rpm
820
820
Output of Fan Motor
W
30
30
Outdoor Unit Fan Motor RLA
Fan Motor Capacitor
A
0.36
0.36
μF
/
/
Air Flow Volume of Outdoor Unit
CFM
Fan Type
Fan Diameter
inch
942
942
Axial-flow
Axial-flow
Φ15 3/4
Φ15 3/4
/
Automatic Defrosting
T1
T1
I
I
IP24
IP24
PSIG
620
620
Defrosting Method
Climate Type
Isolation
Moisture Protection
Permissible Excessive Operating
Pressure for the Discharge Side
Permissible Excessive Operating
Pressure for the Suction Side
Sound Pressure Level (H/M/L)
PSIG
360
360
dB (A)
52/-/-
52/-/-
Sound Power Level (H/M/L)
dB (A)
62/-/-
62/-/-
inch
30 9/16X21 1/4X12 5/8
30 9/16X21 1/4X12 5/8
Dimension of Carton Box (LXWXH)
inch
33 3/8X14 3/16X22 13/16
33 3/8X14 3/16X22 13/16
Dimension of Package (LXWXH)
inch
33 1/2X14 5/16X23 7/16
33 1/2X14 5/16X23 7/16
Net Weight
Ib
66.2
65.0
Gross Weight
Ib
71.7
70.6
Dimension (WXHXD)
Refrigerant
R410A
R410A
Refrigerant Charge
oz
24.7
24.7
Length
ft
24.6
24.6
oz/ft
0.2
0.2
Gas Additional Charge
Outer Diameter Liquid Pipe
Connection
Outer Diameter Gas Pipe
Pipe
Max Distance Height
Max Distance Length
inch
Φ1/4
Φ1/4
inch
Φ3/8
Φ3/8
ft
32.8
32.8
ft
49.2
49.2
Note:The connection pipe applies metric diameter.
The above data is subject to change without notice. Please refer to the nameplate of the unit.
4
Technical Information
Service Manual
1.GWC12QC-D3DNA6E(LC)
2.GWC12QC-D3DNB4E(LC)
3.GWC12QC-D3DNC2E(LC)
Model
4.GWC12QC-D3DNA5E(LC)
5.GWC12QC-D3DNB2E(LC)
6.GWC12QC-D3DNB8E(LC)
7.GWC12QC-D3DNA1E(LC)
1.CB427001800 2.CB434001600
3.CB439000800 4.CB425004400
Product Code
5.CB432002500 6.CB438N01600
7.CB419007100
Rated Voltage
V~
208/230
Power Supply Rated Frequency
Hz
60
Phases
1
Power Supply Mode
Outdoor
Cooling Capacity(Min~Max)
Btu/h
12000(3753~12500)
Heating Capacity(Min~Max)
Btu/h
/
Cooling Power Input(Min~Max)
W
1300(410~1350)
Heating Power Input(Min~Max)
W
/
Cooling Power Current
A
5.8
Heating Power Current
A
/
Rated Input
W
1350
Rated Current
A
5.8
Air Flow Volume(SH/H/M/L)
CFM
400/318/253/194
Dehumidifying Volume
Pint/h
2.96
EER
(Btu/h)/W
9.23
COP
(Btu/h)/W
/
SEER
16.00
HSPF
/
Application Area
yd2
19.14-28.70
1.GWC12QC-D3DNA6E/I
2.GWC12QC-D3DNB4E/I
3.GWC12QC-D3DNC2E/I
Model of indoor unit
4.GWC12QC-D3DNA5E/I
5.GWC12QC-D3DNB2E/I
6.GWC12QC-D3DNB8E/I
7.GWC12QC-D3DNA1E/I
1.CB427N01800 2.CB434N01600
3.CB439N00800 4.CB425N04400
Indoor Unit Product Code
5.CB432N02500 6.CB438N01600
7.CB419N07100
Fan Type
Cross-flow
Diameter Length(DXL)
inch
Φ3 7/8X25
Fan Motor Cooling Speed(SH/H/M/L)
r/min
1350/1200/1000/800/Fan Motor Heating Speed(SH/H/M/L)
r/min
/
Output of Fan Motor
W
20
Indoor Unit Fan Motor RLA
A
0.21
Fan Motor Capacitor
μF
1.5
Evaporator Form
Aluminum Fin-copper Tube
Pipe Diameter
inch
Φ3/16
Row-fin Gap
inch
2-1/16
Coil Length (LXDXW)
inch
25X7/8X12 1/16
Swing Motor Model
MP24BA
Output of Swing Motor
W
1.5
Fuse
A
3.15
Sound Pressure Level(SH/H/M/L)
dB (A)
45/39/35/29/Sound Power Level(SH/H/M/L)
dB (A)
55/49/45/39/Dimension (WXHXD)
inch
33 1/4X11 3/8X8 1/4
Dimension of Carton Box (LXWXH)
inch
36 1/8X11X14 5/16
Dimension of Package (LXWXH)
inch
36 1/4X11X15
Net Weight
Ib
23.2
Gross Weight
Ib
27.6
Technical Information
1.GWH12QC-D3DNA6E(LCLH)
2.GWH12QC-D3DNB4E(LCLH)
3.GWH12QC-D3DNC2E(LCLH)
4.GWH12QC-D3DNB2E(LCLH)
5.GWH12QC-D3DNA5E(LCLH)
6.GWH12QC-D3DNB8E
1.CB427002100 2.CB434001300
3.CB439000900 4.CB432002600
5.CB425004500 CB425004501
6.CB438001400
208/230
60
1
Outdoor
12000(3753~12500)
13000(3924~14000)
1300(410~1350)
1250(380~1500)
5.8
5.6
1500
6.7
400/318/253/194
2.96
9.23
10.40
16.00
9.00
19.14-28.70
1.GWH12QC-D3DNA6E/I
2.GWH12QC-D3DNB4E/I
3.GWH12QC-D3DNC2E/I
4.GWH12QC-D3DNB2E/I
5.GWH12QC-D3DNA5E/I
6.GWH12QC-D3DNB8E/I
1.CB427N02100 2.CB434N01300
3.CB439N00900 4.CB432N02600
5.CB425N04500 CB425N04501
6.CB438N01400
Cross-flow
Φ3 7/8X25
1350/1200/1000/800/1350/1200/1000/900/20
0.21
1.5
Aluminum Fin-copper Tube
Φ3/16
2-1/16
25X7/8X12 1/16
MP24BA
1.5
3.15
45/39/35/29/55/49/45/39/33 1/4X11 3/8X8 1/4
36 1/8X11X14 5/16
36 1/4X11X15
23.2
27.6
5
Service Manual
Model of Outdoor Unit
GWC12QC-D3DNA6E/O(LC)
GWH12QC-D3DNA6E/O(LCLH)
CB427W01800
ZHUHAI GREE DAIKIN DEVICE
CB427W02100
ZHUHAI GREE DAIKIN DEVICE
CO.,LTD
1GDY23AXD
CO.,LTD
1GDY23AXD
DAPHNE FVC50K
DAPHNE FVC50K
Swing
Swing
A
/
/
Compressor RLA
A
4.00
4.00
Compressor Power Input
W
845
845
KSD115℃ or HPC115/95
KSD115℃ or HPC115/95
Capillary
Capillary
Outdoor Unit Product Code
Compressor Manufacturer/Trademark
Compressor Model
Compressor Oil
Compressor Type
Compressor Locked Rotor Amp (L.R.A)
Overload Protector
Throttling Method
Operation temp
ºF
60.8~86
60.8~86
Ambient temp (cooling)
ºF
0~115
0~115
Ambient temp (heating)
ºF
Condenser Form
/
-4~75
Aluminum Fin-copper Tube
Aluminum Fin-copper Tube
Pipe Diameter
inch
Φ5/16
Φ5/16
Rows-fin Gap
inch
2-1/16
2-1/16
Coil Length (LXDXW)
inch
28X1 1/2X20
28X1 1/2X20
Fan Motor Speed
rpm
820
820
Output of Fan Motor
W
30
30
Outdoor Unit Fan Motor RLA
Fan Motor Capacitor
A
0.36
0.36
Air Flow Volume of Outdoor Unit
μF
/
/
CFM
942
942
Axial-flow
Axial-flow
Φ15 3/4
Φ15 3/4
/
Automatic Defrosting
T1
T1
Fan Type
Fan Diameter
inch
Defrosting Method
Climate Type
Isolation
Moisture Protection
Permissible Excessive Operating
Pressure for the Discharge Side
Permissible Excessive Operating
Pressure for the Suction Side
Sound Pressure Level (H/M/L)
Sound Power Level (H/M/L)
I
I
IP24
IP24
PSIG
620
620
PSIG
360
360
dB (A)
52/-/-
53/-/-
dB (A)
62/-/-
63/-/-
Dimension (WXHXD)
inch
30 9/16X21 1/4X12 5/8
30 9/16X21 1/4X12 5/8
Dimension of Carton Box (LXWXH)
inch
33 3/8X14 3/16X22 13/16
33 3/8X14 3/16X22 13/16
Dimension of Package (LXWXH)
inch
33 1/2X14 5/16X23 7/16
33 1/2X14 5/16X23 7/16
Net Weight
Ib
69.5
70.6
Gross Weight
Ib
75
76.1
R410A
R410A
oz
30.0
30.0
Refrigerant
Refrigerant Charge
Length
Gas Additional Charge
Outer Diameter Liquid Pipe
Connection
Outer Diameter Gas Pipe
Pipe
Max Distance Height
Max Distance Length
ft
24.6
24.6
oz/ft
0.2
0.2
inch
Φ1/4
Φ1/4
inch
Φ3/8
Φ3/8
ft
32.8
32.8
ft
49.2
49.2
Note:The connection pipe applies metric diameter.
The above data is subject to change without notice. Please refer to the nameplate of the unit.
6
Technical Information
Service Manual
2.2 Operation Characteristic Curve
Heating
Cooling
• Conditions
Indoor : DB80˚F/WB66.9˚F
Outdoor : DB95˚F
Indoor air flow : High
Pipe lengt : 24.6ft
10
9
Current (A)
8
7
11
220V
9
8
6
230V
5
4
3
230V
6
5
240V
4
• Conditions
Indoor : DB70˚F/WB60˚F
Outdoor : DB19.94˚F/WB19.04˚F
Indoor air flow : High
Pipe lengt : 24.6ft
2
1
1
0
7
3
240V
2
220V
10
Current (A)
11
0
10
20
30
40
50
60
70
80
0
90
0
10
20
30
Compressor frequency(Hz)
40
50
60
70
80
90 100 110 120
Compressor frequency(Hz)
2.3 Capacity Variation Ratio According to Temperature
Heating
Cooling
105
110
100
100
90
85
80
75
• Conditions
Indoor : DB80˚F/WB66.9˚F
Outdoor : DB95˚F
Indoor air flow : High
Pipe lengt : 24.6ft
70
65
60
55
50
89 91
93
95 97
99 100 102 104 106 108 109.4
Outdoor temp. (˚F)
Technical Information
Capacity ratio (%)
Capacity ratio (%)
95
90
80
70
• Conditions
Indoor : DB70˚F/WB60˚
Outdoor : DB19.94˚F/WB19.04˚F
Indoor air flow : High
Pipe lengt : 24.6ft
60
50
40
5
14
23
32
41 44.6
50
Outdoor temp. (˚F)
7
Service Manual
2.4 Cooling and Heating Data Sheet in Rated Frequency
Cooling:
Rated cooling
condition(°F) (DB/WB)
Model
Pressure of gas pipe
connecting indoor and
outdoor unit
Indoor
Outdoor
P (PSIG)
80/66.9
95/-
09K
130~142
80/66.9
95/-
12K
130~142
Model
Pressure of gas pipe
connecting indoor and
outdoor unit
Inlet and outlet pipe
temperature of heat
exchanger
T1 (°F)
in:46.4~51.8
out:51.8~57.2
in:46.4~51.8
out:51.8~57.2
Compressor
Fan speed of Fan speed of
revolution
indoor unit outdoor unit
(rps)
T2 (°F)
in:167~181.4
Super High
out:98.6~118.4
in:167~181.4
Super High
out:98.6~118.4
High
52
High
72
Heating:
Rated heating
condition(°F) (DB/WB)
Indoor
Outdoor
P (PSIG)
70/60
19.94/19.04
09K
362~406
70/60
19.94/19.04
12K
362~406
Inlet and outlet pipe
temperature of heat
exchanger
Fan speed of Fan speed of
indoor unit outdoor unit
T1 (°F)
T2 (°F)
in:167~181.4 in:33.8~37.4
Super High
out:98.6~113 out:35.6~42.8
in:167~181.4 in:33.8~37.4
Super High
out:98.6~113 out:35.6~42.8
Compressor
revolution
(rps)
High
65
High
77
Instruction:
T1: Inlet and outlet pipe temperature of evaporator
T2: Inlet and outlet pipe temperature of condenser
P: Pressure at the side of big valve
Connection pipe length: 24.6ft.
2.5 Noise Curve
Indoor side noise when blowing
Outdoor side noise when blowing
60
56
54
52
Noise dB(A)
Noise/dB(A)
50
40
50
48
09&12K Heating
46
30
09&12K Cooling
44
42
20
Low
Middle
High
Indoor fan motor rotating speed
09K
8
Super High
40
20
30
40
50
60
70
80
90
Compressor frequency(Hz)
12K
Technical Information
Service Manual
3. Outline Dimension Diagram
3.1 Indoor Unit
W
D
H
6 5/8
18 3/16
6 5/16
09K
Φ2 3/16
Φ2 3/16
2 1/8
2 1/8
6
3 1/2
4 11/16
21 5/16
7 1/4
12K
Φ2 3/16
Φ2 3/16
1 3/8
5
1 3/8
3 5/16
Unit:inch
MODEL
09K
12K
Technical Information
W
31 1/8
33 1/4
H
10 7/8
11 3/8
D
7 7/8
8 1/4
9
Service Manual
3.2 Outdoor Unit
28
12 5/8
30 9/16
11 1/4
21 1/4
10 1/8
20
10
Technical Information
Service Manual
4. Refrigerant System Diagram
Cooling only models
Outdoor unit
Indoor unit
Gas pipe
side
Valve
Discharge
Heat
exchanger
(evaporator)
Suction
Accumlator
Compressor
Heat
exchanger
(condenser)
Liquid pipe
side
Valve
Capillary
Strainer
Cooling and heating models
Outdoor unit
Indoor unit
Gas pipe
side
Valve
4-Way valve
Discharge
Heat
exchanger
(evaporator)
Accumlator
Suction
Compressor
Heat
exchanger
(condenser)
Liquid pipe
side
Valve
Strainer
Capillary
Strainer
COOLING
HEATING
Connection pipe specification:
Liquid pipe:1/4"
Gas pipe:3/8"
Technical Information
11
Service Manual
5. Electrical Part
5.1 Wiring Diagram
● Instruction
Symbol
Symbol Color
Symbol
Symbol Color
Symbol
Name
WH
White
GN
Green
CAP
Jumper cap
YE
Yellow
BN
Brown
COMP
Compressor
RD
Red
BU
Blue
Yellow/Green
BK
Black
/
/
Violet
OG
Orange
/
/
YEGN
VT
Grounding wire
Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model.
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Technical Information
Service Manual
● Outdoor Unit
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These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
Technical Information
13
Service Manual
5.2 PCB Printed Diagram
Indoor Unit
● Top view
1
2
3
4
5
6
7
1 Neutral wire for health function
2 Neutral wire
16
8
9
10
4 Live wire for health function
5 Jumper cap
6 Up&down swing motor
7 Feedback interface of indoor fan
8 Left&right swing motor
9 Interface of temperature sensor
15
10 Interface of wired controller
11 Display interface
14
12 Control port of compressor
13 Interface of communication circuit
13
12
3 Motor of indoor fan
11
14 Live wire
15 Fuse
16 Capacitor of indoor fan
● Bottom view
14
Technical Information
Service Manual
Outdoor Unit
● Top view
1
2
1 Interface of indoor fan
2 Interface of electric heating belt
3
12
3 Interface of 4-way valve
Interface of electronic
4
expansion valve
5 Interface of earthing wire
6 Interface of live wire
7 Interface of neutral wire
Interface of communication
8 wire for indoor fan and outdoor
9
fan
Overload interface of
compressor
Interface of temperature sensor
4
10
5
12 Interface of PFC wire
wire
11 Interface of compressor wire
11
10
9
8
7
6
● Bottom view
Technical Information
15
Service Manual
6. Function and Control
6.1 Remote Controller Introduction
2
4
ON/OFF button
2
MODE button
3
FAN button
4
SWING button
3
5
TURBO button
5
6
▲/
7
SLEEP button
8
TEMP button
9
I FEEL button
10
LIGHT button
11
CLOCK button
12
TIMER ON / TIMER OFF
button
6
7
8
9
11
10
12
button
▲
1
1
Introduction for icons on display screen
I feel
Operation mode
Auto mode
Cool mode
Set fan speed
Send signal
Turbo mode
8℃ heating function
Dry mode
Fan mode
Set temperature
Heat mode
Clock
Sleep mode
Light
Set time
TIMER ON / TIMER OFF
Child lock
Up & down swing
Temp. display type
:Set temp.
:Indoor ambient temp.
:Outdoor ambient temp.
Introduction for buttons on remote controller
Note:
● After putting through the power, the air conditioner will give out a sound. Operation indictor "
" is ON (red indicator). After that,
you can operate the air conditioner by using remote controller.
● Under ON status, pressing the button on the remote controller, the signal icon "
"on the display of remote controller will blink once
and the air conditioner will give out a “de” sound, which means the signal has been sent to the air conditioner.
● Under OFF status, set temperature and clock icon will be displayed on the display of remote controller (If timer ON, timer OFF and
light functions are set, the corresponding icons will be displayed on the display of remote controller at the same time); Under ON
status, the display will show the corresponding set function icons.
16
Technical Information
Service Manual
1. ON/OFF button
Press this button can turn on or turn off the air conditioner. After turning on the air conditioner, operation indicator "
display is ON (green indicator. The colour is different for different models), and indoor unit will give out a sound.
"on indoor unit’s
2. MODE button
Press this button to select your required operation mode.
AUTO
COOL
DRY
FAN
HEAT
● When selecting auto mode, air conditioner will operate automatically according to factory setting. Set temperature can’t be adjusted and
will not be displayed as well. Press "FAN" button can adjust fan speed. Press "SWING" button can adjust fan blowing angle.
● After selecting cool mode, air conditioner will operate under cool mode. Cool indicator "
"on indoor unit is ON. Press "▲" or "
" button
to adjust set temperature. Press "FAN" button to adjust fan speed. Press "SWING" button to adjust fan blowing angle.
● When selecting dry mode, the air conditioner operates at low speed under dry mode. Dry indicator "
" on indoor unit is ON. Under dry
mode, fan speed can’t be adjusted. Press "SWING" button to adjust fan blowing angle.
● When selecting fan mode, the air conditioner will only blow fan, no cooling and no heating. All indicators are OFF. Press "FAN" button to
adjust fan speed. Press "SWING" button to adjust fan blowing angle.
● When selecting heating mode, the air conditioner operates under heat mode. Heat indicator "
" on indoor unit is ON. Press "▲" or "
"
button to adjust set temperature. Press "FAN" button to adjust fan speed. Press "SWING" button to adjust fan blowing angle. (Cooling only
unit won’t receive heating mode signal. If setting heat mode with remote controller, press ON/OFF button can’t start up the unit).
Note:
● For preventing cold air, after starting up heating mode, indoor unit will delay 1~5 minutes to blow air (actual delay time is depend on indoor
ambient temperature).
● Set temperature range from remote controller: 16~30℃ (60.8~86.0OF); Fan speed: auto, low speed, medium speed, high speed.
▲
▲
3. FAN button
Pressing this button can set fan speed circularly as: auto (AUTO), low(
) ,medium(
), high(
).
Auto
Caution:
● Under AUTO speed, air conditioner will select proper fan speed automatically according to factory setting.
● Fan speed under dry mode is low speed.
4. SWING button
Press this button can select up&down swing angle. Fan blow angle can be selected circularly as below:
no display
(horizontal louvers stops at current position)
● When selecting "
", air conditioner is blowing fan automatically. Horizontal louver will automatically swing up & down at maximum angle.
● When selecting " 、 、 、 、 ", air conditioner is blowing fan at fixed position. Horizontal louver will stop at the fixed position.
● When selecting " 、 、 " , air conditioner is blowing fan at fixed angle. Horizontal louver will send air at the fixed angle.
● Hold "
"button above 2s to set your required swing angle. When reaching your required angle, release the button.
Note:
● " 、 、 " may not be available. When air conditioner receives this signal, the air conditioner will blow fan automatically.
5. TURBO button
Under COOL or HEAT mode, press this button to turn to quick COOL or quick HEAT mode. "
Press this button again to exit turbo function and "
" icon will disappear.
▲
6. ▲/
" icon is displayed on remote controller.
button
● Press "▲" or " " button once increase or decrease set temperature 1OC(1OF). Holding "▲" or " " button, 2s later, set temperature
on remote controller will change quickly. On releasing button after setting is finished, temperature indicator on indoor unit will change
accordingly. (Temperature can’t be adjusted under auto mode)
● When setting TIMER ON, TIMER OFF or CLOCK, press "▲" or "▲" button to adjust time. (Refer to CLOCK, TIMER ON, TIMER OFF
buttons) When setting TIMER ON, TIMER OFF or CLOCK, press "▲" or "▲" button to adjust time. (Refer to CLOCK, TIMER ON, TIMER
OFF buttons)
▲
▲
Technical Information
17
Service Manual
7. SLEEP button
Under COOL, HEAT or DRY mode, press this button to start up sleep function. "
again to cancel sleep function and "
" icon will disappear.
" icon is displayed on remote controller. Press this button
8. TEMP button
By pressing this button, you can see indoor set temperature, indoor ambient temperature or outdoor ambient temperature on indoor unit’s
display. The setting on remote controller is selected circularly as below:
no display
● When selecting "
● When selecting "
● When selecting "
Note:
" or no display with remote controller, temperature indicator on indoor unit displays set temperature.
" with remote controller, temperature indicator on indoor unit displays indoor ambient temperature.
" with remote controller, temperature indicator on indoor unit displays outdoor ambient temperature.
● Outdoor temperature display is not available for some models. At that time, indoor unit receives "
"signal, while it displays indoor set
temperature.
● It’s defaulted to display set temperature when turning on the unit.There is no display in the remote controller.
● Only for the models whose indoor unit has dual-8 display.
● When selecting displaying of indoor or outdoor ambient temperature, indoor temperature indicator displays corresponding temperature and
automatically turn to display set temperature after three or five seconds.
9. I FEEL button
Press this button to start I FEEL function and "
" will be displayed on the remote controller. After this function is set, the remote controller
will send the detected ambient temperature to the controller and the unit will automatically adjust the indoor temperature according to the
detected temperature. Press this button again to close I FEEL function and "
" will disappear.
● Please put the remote controller near user when this function is set. Do not put the remote controller near the object of high temperature
or low temperature in order to avoid detecting inaccurate ambient temperature.
10. LIGHT button
Press this button to turn off display light on indoor unit. "
display light. "
" icon is displayed.
" icon on remote controller disappears. Press this button again to turn on
11. CLOCK button
Press this button to set clock time. "
" icon on remote controller will blink. Press "▲" or " " button within 5s to set clock time. Each
pressing of "▲" or " " button, clock time will increase or decrease 1 minute. If hold "▲" or " " button, 2s later, time will change quickly.
Release this button when reaching your required time. Press "CLOCK" button to confirm the time. "
" icon stops blinking.
Note:
● Clock time adopts 24-hour mode.
● The interval between two operation can’t exceeds 5s. Otherwise, remote controller will quit setting status. Operation for TIMER ON/TIMER
OFF is the same.
▲
▲
▲
12. TIMER ON / TIMER OFF button
● TIMER ON button
"TIMER ON" button can set the time for timer on. After pressing this button, "
" icon disappears and the word "ON" on remote controller
blinks. Press "▲" or " "button to adjust TIMER ON setting. After each pressing "▲" or " " button, TIMER ON setting will increase or
decrease 1min. Hold "▲" or " " button, 2s later, the time will change quickly until reaching your required time. Press "TIMER ON" to
confirm it. The word "ON" will stop blinking. "
" icon resumes displaying. Cancel TIMER ON: Under the condition that TIMER ON is
started up, press "TIMER ON" button to cancel it.
● TIMER OFF button
"TIMER OFF" button can set the time for timer off. After pressing this button,"
" icon disappears and the word "OFF" on remote
controller blinks. Press "▲" or " " button to adjust TIMER OFF setting. After each pressing "▲" or " " button,
TIMER OFF setting will increase or decrease 1min. Hold "▲" or " " button, 2s later, the time will change quickly until reaching your
required time. Press "TIMER OFF" word "OFF" will stop blinking. "
" icon resumes displaying. Cancel TIMER OFF. Under the condition
that TIMER OFF is started up, press "TIMER OFF" button to cancel it.
Note:
● Under on and off status, you can set TIMER OFF or TIMER ON simultaneously.
● Before setting TIMER ON or TIMER OFF, please adjust the clock time.
● After starting up TIMER ON or TIMER OFF, set the constant circulating valid. After that, air conditioner will be turned on or turned off
according to setting time. ON/OFF button has no effect on setting. If you don’t need this function, please use remote controller to cancel it.
▲
▲
▲
▲
▲
▲
18
Technical Information
Service Manual
Function introduction for combination buttons
1. Energy-saving function
Under cooling mode, press "TEMP" and " CLOCK" buttons simultaneously to start up or turn off energy-saving function. When energy-saving
function is started up, "SE" will be shown on remote controller, and air conditioner will adjust the set temperature automatically according
to factory setting to reach to the best energy-saving effect. Press "TEMP" and "CLOCK"buttons simultaneously again to exit energy-saving
function.
Note:
● Under energy-saving function, fan speed is defaulted at auto speed and it can’t be adjusted.
● Under energy-saving function, set temperature can’t be adjusted. Press "TURBO" button and the remote controller won’t send signal.
● Sleep function and energy-saving function can’t operate at the same time. If energy-saving function has been set under cooling mode,
press sleep button will cancel energy-saving function. If sleep function has been set under cooling mode, start up the energy-saving
function will cancel sleep function.
2. 8 ℃ heating function
Under heating mode, press "TEMP" and "CLOCK" buttons simultaneously to start up or turn off 8℃ heating function. When this function is
started up, "
" and "8℃ " will be shown on remote controller, and the air conditioner keep the heating status at 8℃ . Press "TEMP" and
"CLOCK" buttons simultaneously again to exit 8℃ heating function.
Note:
● Under 8℃ heating function, fan speed is defaulted at auto speed and it can’t be adjusted.
● Under 8℃ heating function, set temperature can’t be adjusted. Press "TURBO" button and the remote controller won’t send signal.
● Sleep function and 8℃ heating function can’t operate at the same time. If 8℃ heating function has been set under cooling mode, press
sleep button will cancel 8℃ heating function. If sleep function has been set under cooling mode, start up the 8℃ heating function will
cancel sleep function.
● Under ℉ temperature display, the remote controller will display 46 ℉ heating.
3. Child lock function
Press "▲" and " " simultaneously to turn on or turn off child lock function. When child lock function is on, "
" icon is displayed on remote
controller. If you operate the remote controller, the "
" icon will blink three times without sending signal to the unit.
▲
4. Temperature display switchover function
" and "MODE" buttons simultaneously to switch temperature display between ℃ and ℉ .
▲
Under OFF status, press "
Operation guide
1. After putting through the power, press "ON/OFF" button on remote controller to turn on the air conditioner.
2. Press "MODE" button to select your required mode: AUTO, COOL, DRY, FAN, HEAT.
3. Press "▲" or " " button to set your required temperature. (Temperature can’t be adjusted under auto mode).
4. Press "FAN" button to set your required fan speed: auto, low, medium and high speed.
5. Press "SWING" button to select fan blowing angle.
▲
Replacement of batteries in remote controller
1. Press the back side of remote controller marked with "
", as shown in the fig, and then push
out the cover of battery box along the arrow direction.
2. Replace two 7# (AAA 1.5V) dry batteries, and make sure the position of "+" polar and "-" polar
are correct.
3. Reinstall the cover of battery box.
signal sender
battery
reinstall
remove
Note:
Cover of battery box
● During operation, point the remote control signal sender at the receiving window on indoor unit.
● The distance between signal sender and receiving window should be no more than 8m, and there should be no obstacles between them.
● Signal may be interfered easily in the room where there is fluorescent lamp or wireless telephone; remote controller should be close to
indoor unit during operation.
● Replace new batteries of the same model when replacement is required.
● When you don’t use remote controller for a long time, please take out the batteries.
● If the display on remote controller is fuzzy or there’s no display, please replace batteries.
Technical Information
19
Service Manual
6.2 Brief Description of Modes and Functions
● Indoor
Unit
1.Basic function of system
(1)Cooling mode
(1) Under this mode, fan and swing operates at setting status. Temperature setting range is 60.8~86.0OF.
(2) During malfunction of outdoor unit or the unit is stopped because of protection, indoor unit keeps original operation status.
(2)Drying mode
(1) Under this mode, fan operates at low speed and swing operates at setting status. Temperature setting range is 60.8~86.0OF.
(2) During malfunction of outdoor unit or the unit is stopped because of protection, indoor unit keeps original operation status.
(3) Protection status is same as that under cooling mode.
(4) Sleep function is not available for drying mode.
(3)Heating mode
(1) Under this mode, Temperature setting range is 60.8~86.0OF.
(2) Working condition and process for heating mode:
When turn on the unit under heating mode, indoor unit enters into cold air prevention status. When the unit is stopped or at OFF status,
and indoor unit has been started up just now, the unit enters into residual heat-blowing status.
(4)Working method for AUTO mode:
1.Working condition and process for AUTO mode:
a.Under AUTO mode, standard heating Tpreset=68.0OF and standard cooling Tpreset=77.0OF. The unit will switch mode automatically
according to ambient temperature.
2.Protection function
a. During cooling operation, protection function is same as that under cooling mode.
b. During heating operation, protection function is same as that under heating mode.
3. Display: Set temperature is the set value under each condition. Ambient temperature is (Tamb.-Tcompensation) for heat pump unit
and Tamb. for cooling only unit.
4. If there’s I feel function, Tcompensation is 0. Others are same as above.
(5)Fan mode
Under this mode, indoor fan operates at set fan speed. Compressor, outdoor fan, 4-way valve and electric heating tube stop operation.
Indoor fan can select to operate at high, medium, low or auto fan speed. Temperature setting range is 60.8~86.0OF.
2. Other control
(1) Buzzer
Upon energization or availably operating the unit or remote controller, the buzzer will give out a beep.
(2) Auto button
If press this auto button when turning off the unit, the complete unit will operate at auto mode. Indoor fan operates at auto fan speed
and swing function is turned on. Press this auto button at ON status to turn off the unit.
(3) Auto fan
Heating mode: During auto heating mode or normal heating ode, auto fan speed will adjust the fan speed automatically according to
ambient temperature and set temperature.
(4) Sleep
After setting sleep function for a period of time, system will adjust set temperature automatically.
(5) Timer function:
General timer and clock timer functions are compatible by equipping remote controller with different functions.
(6) Memory function
memorize compensation temperature, off-peak energization value.
Memory content: mode, up&down swing, light, set temperature, set fan speed, general timer (clock timer can’t be memorized).
After power recovery, the unit will be turned on automatically according to memory content.
(7) Health function
During operation of indoor fan, set health function by remote controller. Turn off the unit will also turn off health function.
Turn on the unit by pressing auto button, and the health is defaulted ON.
20
Technical Information
Service Manual
(8)I feel control mode
After controller received I feel control signal and ambient temperature sent by remote controller, controller will work according to the ambient
temperature sent by remote controller.
(9)Compulsory defrosting function
(1) Start up compulsory defrosting function
Under ON status, set heating mode with remote controller and adjust the temperature to 60.8OF. Press “+, -, +, -, +,-” button successively
within 5s and the complete unit will enter into compulsory defrosting status. Meanwhile, heating indicator on indoor unit will ON 10s and OFF
0.5s successively. (Note: If complete unit has malfunction or stops operation due to protection, compulsory defrosting function can be started
up after malfunction or protection is resumed.
(2) Exit compulsory defrosting mode
After compulsory defrosting is started up, the complete unit will exit defrosting operation according to the actual defrosting result, and the
complete unit will resume normal heating operation.
(10)Refrigerant recovery function:
(1) Enter refrigerant recycling function
Within 5min after energizing (unit ON or OFF status is ok), continuously press LIGHT button for 3 times within 3s to enter refrigerant
recycling mode; Fo is displayed and refrigerant recycling function is started. At this moment, the maintenance people closes liquid valve.
After 5min, stick the thimble of maintenance valve with a tool. If there is no refrigerant spraying out, close the gas valve immediately and
then turn off the unit to remove the connection pipe.
(2) Exit refrigerant recycling function
After entering refrigerant recycling mode, when receive any remote control signal or enter refrigerant recycling mode for 25min, the unit will
exit refrigerant recycling mode automatically If the unit is in standby mode before refrigerant recycling, it will be still in standby mode after
finishing refrigerant recycling; if the unit is in ON status before refrigerant recycling, it will still run in original operation mode.
(11)Ambient temperature display control mode
1. When user set the remote controller to display set temperature (corresponding remote control code: 01), current set temperature will be
displayed.
2. Only when remote control signal is switched to indoor ambient temperature display status (corresponding remote control code: 10) from
other display status (corresponding remote control code: 00, 01,11),controller will display indoor ambient temperature for 3s and then turn
back to display set temperature.
Under this mode, indoor fan operates at set fan speed. Compressor, outdoor fan, 4-way valve and electric heating tube stop operation.
Indoor fan can select to operate at high, medium, low or auto fan speed. Temperature setting range is 60.8~86.0OF.
(12)Off-peak energization function:
Adjust compressor’s minimum stop time. The original minimum stop time is 180s and then we change to:
The time interval between two start-ups of compressor can’t be less than 180+T s(0≤T≤15). T is the variable of controller. That’s to say
the minimum stop time of compressor is 180s~195s. Read-in T into memory chip when refurbish the memory chip each time. After power
recovery, compressor can only be started up after 180+T s at least.
(13) SE control mode
The unit operates at SE status.
(14) X-fan mode
When X-fan function is turned on, after turn off the unit, indoor fan will still operate at low speed for 2min and then the complete unit will be
turned off. When x-fan function is turned off, after turn off the unit, the complete unit will be turned off directly.
(15) 8º heating function
Under heating mode, you can set 8º heating function by remote controller. The system will operate at 8ºset temperature.
(16) Turbo fan control function
Set turbo function under cooling or heating mode to enter into turbo fan speed. Press fan speed button to cancel turbo wind.
No turbo function under auto, dry or fan mode.
Technical Information
21
Service Manual
Outdoor Units
1. Input Parameter Compensation and Calibration
(1) Check the ambient temperature compensation function Indoor ambient temperature compensation function.
a. In cooling mode, the indoor ambient temperature participating in computing control = (Tindoor ambient temperature – ⊿ Tcooling indoor ambient temperature
compensation)
b. In heating mode, the indoor ambient temperature participating in computing control= (Tindoor ambient temperature – ⊿ Theating indoor ambient temperature
compensation)
(2) Check effective judgment controls of parameters
Effective judgment function of the outdoor exhaust temperature thermo-bulb When conditions a and b are satisfied, the outdoor exhaust
temperature thermo-bulb is judged not to be connected into place, the mainboard of outer units will display failure of the outdoor exhaust
temperature thermo-bulb (not connected into place), stop the machine for repairing, and resume the machine by remote controls of ON/
OFF.
a. Judgment of exhaust detection temperature change:
After the compressor starts up and runs for 10 minutes, if the compressor frequency f ≥ 40Hz, and the rising value Texhaust (Texhaust (after startup for 10 minutes) - Texhaust (before start-up)) <35.6ºF , the outdoor exhaust temperature thermo-bulb can be judged not to be connected into place (judging
once when the power is on the first time).
b. Comparative judgment of exhaust detection temperature and condenser detection temperature (Tpipe temperature = Toutdoor pipe temperature in cooling
mode, Tpipe temperature = Tindoor pipe temperature in heating mode): After the compressor starts up and runs for 10 minutes, if the compressor frequency f ≥
40Hz, and Tpipe temperature ≥(Texhaust+37.4), the outdoor exhaust temperature thermobulb can be judged not to be connected into place (judging
once when power is on the first time).
2. Basic Functions
(1) Cooling Mode
1. Conditions and processes of cooling operation:
(1) If the compressor is shut down, and [Tsetup – (Tindoor ambient temperature – ⊿ Tcooling indoor ambient temperature compensation)] ≤ 32.9ºF , start up the
machine for cooling, the cooling operation will start;
(2) During operations of cooling, if 32ºF ≤ [Tsetup – (Tindoor ambient temperature – ⊿ Tcooling indoor ambient temperature compensation)] < 35.6ºF , the cooling
operation will be still running;
(3) During operations of cooling, if 35.6ºF ≤ [Tsetup – (Tindoor ambient temperature – ⊿ Tcooling indoor ambient temperature compensation)], the cooling operation
will stop after reaching the temperature point.
2. Temperature setting range
(1) If Toutdoor ambient temperature ≥ [Tlow-temperature cooling temperature], the temperature can be set at: 60.8~86ºF (Cooling at room temperature);
(2) If Toutdoor ambient temperature < [Tlow-temperature cooling temperature], the temperature can be set at: 77~86ºF (Cooling at low temperature), that is, the
minimum setting temperature for outer units judgment is 77ºF .
(2) Dehumidifying Mode
1. Conditions and processes of dehumidifying operations: Same as the cooling mode;
2. The temperature setting range is: 60.8~86ºF;
(3) Air-supplying Mode
1. The compressor, outdoor fans and four-way valves are switched off;
2. The temperature setting range is: 60.8~86ºF.
(4) Heating Mode
1. Conditions and processes of heating operations: (Tindoor ambient temperature is the actual detection temperature of indoor environment
thermo-bulb, Theating indoor ambient temperature compensation is the indoor ambient temperature compensation during heating
operations)
(1) If the compressor is shut down, and [(Tindoor ambient temperature – ⊿ Theating indoor ambient temperature compensation) –Tsetup] ≤ 32.9ºF , start the machine
to enter into heating operations for heating;
(2) During operations of heating, if 32ºF ≤ [(Tindoor ambient temperature – ⊿ Theating indoor ambient temperature compensation) –Tsetup] < 35.6ºF , the heating
operation will be still running;
(3) During operations of heating, if 35.6ºF ≤ [(Tindoor ambient temperature – ⊿ Theating indoor ambient temperature compensation) –Tsetup], the heating operation
will stop after reaching the temperature point.
2. The temperature setting range in this mode is: 60.8~86ºF .
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3. Special Functions
Defrosting Control
① Conditions for starting defrosting
After the time for defrosting is judged to be satisfied, if the temperature for defrosting is satisfied after detections for continuous 3minutes,
the defrosting operation will start.
② Conditions of finishing defrosting
The defrosting operation can exit when any of the conditions below is satisfied:
③ Toutdoor pipe temperature ≥ (Toutdoor ambient temperature – [Ttemperature 1 of finishing defrosting];
④ The continuous running time of defrosting reaches [tmax. defrosting time].
4. Control Logic
(1) Compressor Control
Start the compressor after starting cooling, heating, dehumidifying operations, and the outer fans start for 5s; When the machine is
shutdown, in safety stops and when switching to air-supplying mode, the compressor will stop immediately. In all modes: once the
compressor starts up, it will not be allowed to stop until having run for the [tmin. compressor running time] (Note: including cases of
shutdown when the temperature point is reached; except the cases requiring stopping the compressor such as fault protection, remote
shutdown, mode switching etc.); In all modes: once the compressor stops, it will be allowed be restart after 3-minute delay (Note: The
indoor units have a function of power memory, the machine can be restarted after remote shutdown and powering up again without
delay).
1. Cooling mode
Start the machine to enter into cooling operation for cooling, the compressor is switched on.
2. Dehumidifying mode
Same as the cooling mode.
3. Air-supplying mode
The compressor is switched off.
4. Heating mode
(1) Start the machine to enter into heating operation for heating, the compressor is switched on.
(2) Defrosting:
a. Defrosting starts: the compressor is shut down, and restarts it after 55-second delay.
b. Defrosting ends: the compressor stops, then starts it after 55-second delay.
(2) Outer Fans Control
Notes:
Only the outer fans run for at least 80s in each air flow speed can the air flow be switched;
After the outer fans run compulsively in high speed for 80s when the machine starts up, control the air flow according to the logic.
After remote shutdown, safety stops, and when the machine stops after reaching the temperature point, as well as after the compressor
stops, extend 1 minute, the outer fans will stop (During the period in the 1 minute, the air flow of outer fans can be changed according to
the outdoor ambient temperature changes); When running with force, the outdoor fans shall run in the highest air flow.
(3) 4-way valve control
1. The 4-way valve control under the modes of Cooling, dehumidification and supplying air: closing;
2. The status of 4-way valve control under the heating mode: getting power;
(1) 4-way valve power control under heating mode
a. Starts the machine under heating mode, the 4-way valve will get power immediately.
(2) 4-way valve power turn-off control under heating mode
a. When you should turn off the power or switch to other mode under heating mode, the power of 4-way valve will be cut after 2 minutes
of the compressor stopped.
b. When all kinds of protection stops, the power of 4-way valve will be cut after delaying 4 minutes.
(3) Defrosting control under heating mode:
a. Defrosting begins: The power of 4-way valve will be cut after 50s of entering into the defrosting
compressor.
b. Defrosting stops: The 4-way valve will get power after 50s of exiting the defrosting compressor.
(4) Evaporator frozen-preventing protection function
At the mode of Cooling, dehumidifying:
Evaporator frozen-preventing protection function is allowed to begin after 6 min of starting the compressor.
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Service Manual
1. Starting estimation:
After the compressor stopped working for 180s, if Tinner pipe> [Tfrozen-preventing frequency-limited temperature (the temperature of hysteresis is 35.6ºF )],
the machine is only allowed to start for operating, otherwise it should not be started, and should be stopped to treat according to the frozenpreventing protection: Clear the trouble under the mode of power turn-off / heating, and the protection times are not counted.
2. Frequency limited
[Tfrozen-preventing normal speed frequency-reducing temperature] ≤[Tinner pipe T frozen-preventing frequency-limited temperature] , you should limit the frequency raising of
compressor.
3. Reducing frequency at normal speed:
If [Tfrozen-preventing high speed frequency-reducing temperature] ≤[Tinner pipe T frozen-preventing normal speed frequency-reducing temperature], you should adjust the compressor
frequency by reducing 8Hz/90s till the lower limit;
4. Reducing frequency at high speed:
If [Tfrozen-preventing power turn-off temperature] ≤T inner pipe [Tfrozen-preventing high speed frequency-reducing temperature] you should adjust the compressor frequency by
reducing 30Hz/90s till the lower limit;
5. Power turn-off:
If the Tinner pipe <[Tfrozen-preventing power turn-off temperature], then frozen-preventing protect to stop the machine; If T[frozen-preventing frequency-limited temperature]
<Tinner pipe , and the compressor has stopped working for 3 minutes, the whole machine should be allowed to operate.
6. If the frozen-preventing protection power turn-off continuously occurs for six times, it should not be resumed automatically, and you should
press the ON/OFF button to resume if the fault keeps on. During the process of running, if the running time of compressor exceeds the t
evaporator frozen-preventing protection times zero clearing time , the times of frozen-preventing power turn-off should be cleared to recount.
The mode of stopping the machine or transferring to supply air will clear the trouble times immediately (if the trouble can not be resumed,
mode transferring will not clear it).
(5) Overload protection function
Overload protection function at the mode of Cooling and dehumidifying
1. Starting estimation:
After the compressor stopped working for 180s, if Touter pipe <[TCooling overload frequency-limited temperature] (the temperature of hysteresis is 35.6ºF ), the
machine is allowed to start, otherwise it should not be started, and should be stopped to treat according to the overload protection: Clear the
trouble at the mode of power turn-off / heating, and the protection times are not counted.
2. Frequency limited
If [TCooling overload frequency-limited temperature] ≤[Touter pipe T Cooling overload frequency reducing temperature at normal speed], you should limit the frequency raising of
compressor.
3. Reducing frequency at normal speed and power turn-off:
If [TCooling overload frequency reducing temperature at high speed] ≤T outer pipe< [TCooling overload power turn-off temperature] , you should adjust the compressor frequency
by reducing 8Hz/90s till the lower limit; After it was running 90s at the lower limit, if [TCooling overload frequency reducing temperature at normal speed]≤Touter pipe,
then Cooling overload protects machine stopping;
4. Reducing frequency at high speed and stop machine:
If [TCooling overload frequency reducing temperature at high speed]≤Touter pipe [TCooling overload power turn-off temperature], you should adjust the compressor frequency by
reducing 30Hz/90s till the lower limit; After it was running 90s at the lower limit, if [TCooling overload frequency reducing temperature at normal speed] ≤[T outer pipe],
then Cooling overload protects machine stopping;
5. Power turn-off:
If the [TCooling overload power turn-off temperature] ≤Touter pipe, then Cooling overload protects machine stopping; If [Touter pipe]<[TCooling overload frequency-limited
temperature]and the compressor has been stopped working for 3 minutes, the machine should be allowed to operate.
6. If the Cooling overload protection power turn-off continuously occurs for six times, it should not be resumed automatically, and you should
press the ON/OFF button to resume if the fault keeps on. During the process of running, if the running time of compressor exceeds the t
overload protection times zero clearing time , the times of overload protection power turn-off should be cleared to recount. The mode of
stopping the machine or transferring to supply air will clear the trouble times immediately (if the trouble can not be resumed, transferring
mode will not clear it).
Overload protection function at the mode of heating
Starting estimation :
After the compressor stopped working for 180s, if T inner pipe T heating overload frequency-limited temperature (the temperature of
hysteresis is 35.6ºF ), the machine is allowed to start, otherwise it should not be started, and should be stopped to treat according to the
overload protection:
Clear the trouble at the mode of power turn-off / heating, and the protection times are not counted.
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1. Frequency limited
If [Theating overload frequency-limited temperature]≤Tinner pipe <[Theating overload frequency reducing temperature at normal speed] , you should limit the frequency raising of
compressor.
2. Reducing frequency at normal speed and stopping machine:
If T[heating overload frequency reducing temperature at normal speed]≤Tinner pipe<[Theating overload frequency reducing temperature at high speed], you should adjust the compressor
frequency by reducing 8Hz/90s till the lower limit; After it was running 90s at the lower limit, if T heating overload frequency reducing
temperature at normal speed ≤T inner pipe, then overload protects machine stopping;
3. Reducing frequency at high speed and power turn-off:
If [Theating overload frequency reducing temperature at high speed]≤Tinner pipe<[Theating overload power turn-off temperature], you should adjust the compressor frequency by
reducing 30Hz/90s till the lower limit; After it was running 90s at the lower limit, if T heating overload frequency reducing temperature at normal
speed ≤T outer pipe, then Cooling overload protects machine stopping;
4. Power turn-off:
If the [Theating overload power turn-off temperature] ≤Tinner pipe, then overload protects machine stopping; If T inner pipe T heating overload frequency-limited
temperature and the compressor has been stopped working for 3 minutes, the machine should be allowed to operate.
5. If the overload protection power turn-off continuously occurs for six times, it should not be resumed automatically, and you should press
the ON/OFF button to resume if the fault keeps on. During the process of running, if the running time of compressor exceeds the t overload
protection times zero clearing time , the times of overload protection power turn-off should be cleared to recount. The mode of stopping the
machine or transferring to supply air will clear the trouble times immediately (if the trouble can not be resumed, transferring mode will not clear
it). Protective function for discharge temperature of compressor
1. Starting estimation:
After the compressor stopped working for 180s, if TDischarge <TDischarge limited temperature (the temperature of hysteresis is 35.6ºF ), the machine is
allowed to start, otherwise it should not be started, and should be stopped to treat according to the discharge temperature:
The machine should be stopped or transferred to supply air, the trouble should be cleared immediately, and the protection times are not
counted.
2. Frequency limited
If [TLimited frequency temperature during discharging] ≤TDischarge<[Tfrequency reducing temperature at normal speed during discharging] , you should limit the frequency raising of
compressor.
3. Reducing frequency at normal speed and stopping machine:
If [Tfrequency reducing temperature at normal speed during discharging] ≤TDischarge<[Tfrequency reducing temperature at high speed during discharging], you should adjust the compressor
frequency by reducing 8Hz/90s till the lower limit; After it was running 90s at the lower limit, if [Tfrequency reducing temperature at normal speed during discharging]
≤TDischarge, you should discharge to protect machine stopping;
4. Reducing frequency at high speed and power turn-off:
If [Tfrequency reducing temperature at high speed during discharging] ≤TDischarge <[TStop temperature during discharging], you should adjust
the compressor frequency by reducing 30Hz/90s till the lower limit; After it was running 90s at the lower limit, if [Tfrequency reducing temperature at normal
speed during discharging] ≤TDischarge, you should discharge to protect machine stopping;
5. Power turn-off:
If the [TPower turn-off temperature during discharging] ≤TDischarge, you should discharge to protect machine stopping; If [TDischarge]<[TLimited frequency temperature during
discharging] and the compressor has been stopped for 3 minutes, the machine should be allowed to operate.
6. If the discharging temperature protection of compressor continuously occurs for six times, it should not be resumed automatically, and you
should press the ON/OFF button to resume. During the process of running, if the running time of compressor exceeds the t Protection times
clearing of discharge , the discharge protection is cleared to recount. Stopped or transferred to supply air mode will clear the trouble times
immediately (if the trouble can not be resumed, mode transferring also will not clear it).
7. Frequency limited
If [ILimited frequency when overcurrent] ≤IAC Electric current <[I frequency reducing when overcurrent], you should limit the frequency raising of compressor.
8. Reducing frequency:
If [IFrequency reducing when overcurrent] ≤[IAC Electric current I Power turn-off when overcurrent] , you should reduce the compressor frequency till the lower limit or exit
the frequency reducing condition;
9. Power turn-off:
If [IPower turn-off machine when overcurrent] ≤[IAC Electric current] , you should carry out the overcurrent stopping protection; If I AC Electric current<[T Limited frequency when
overcurrent] and the compressor has been stopped for 3 minutes, the machine should be allowed to operate.
10. If the overcurrent protection continuously occurs for six times, it should not be resumed automatically, and you should press the ON/OFF
button to resume. During the process of running, if the running time of compressor exceeds the [t Protection times clearing of over current] , the discharge
protection is cleared to recount.
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Service Manual
(6)Voltage sag protection
After start the compressor, if the time of DC link Voltage sag [USagging protection voltage] is measured to be less than t Voltage sag protection time ,
the machine should be stop at once, hand on the voltage sag trouble, reboot automatically after 30 minutes.
(7)Communication fault
When you have not received any correct signal from the inner machine in three minutes, the machine will stop for communication fault. When
you have not received any correct signal from driver IC (aim to the controller for the separating of main control IC and driver IC), and the
machine will stop for communication fault. If the communication is resumed, the machine will be allowed to operate.
(8)Module protection
Testing the module protective signal immediately after started, once the module protective signal is measured, stop the machine with module
protection immediately. If the module protection is resumed, the machine will be allowed to operate. If the module protection continuously
occurs for three times, it should not be resumed automatically, and you should press the ON/OFF button to resume. If the running time of
compressor exceeds the [t Protection times clearing of module] , the module protection is cleared to recount.
(9)Module overheating protection
1. Starting estimation:
After the compressor stopped working for 180s, if TModule<[TModule frequency limited temperature](the temperature of hysteresis is 35.6ºF ), the machine
is allowed to start, otherwise it should not be started, and should be stopped to treat according to the module overheating protection: The
machine should be stopped or transferred to supply air, the trouble should be cleared immediately, and the protection times are not counted.
2. Frequency limited
If [TLimited frequency temperature of module] ≤TModule <[Tfrequency reducing temperature at normal speed of module] , you should limit the frequency raising of compressor.
3. Reducing frequency at normal speed and power turn-off:
If [Tfrequency reducing temperature at normal speed of module] ≤TModule<[Tfrequency reducing temperature at high speed of module], you should adjust the compressor frequency by
reducing 8Hz/90s till the lower limit; After it was running 90s at the lower limit, if [T frequency reducing temperature at normal speed of module] ≤T Module, you should
stop the machine for module overheating protection;
4. Reducing frequency at high speed and power turn-off:
If [Tfrequency reducing temperature at high speed of module]≤TModule <[TPower turn-off temperature of module] you should adjust the compressor frequency by reducing 30Hz/90s
till the lower limit; After it was running 90s at the lower limit, if [T frequency reducing temperature at normal speed of module] ≤T Module, you should stop the machine for
module overheating protection;
5. Power turn-off:
If the [TPower turn-off temperature of module] ≤TModule, you should stop the machine for module overheating protection; If TModule <[TLimited frequency temperature of module]
and the compressor has been stopped for 3 minutes, the machine should be allowed to operate.
6. If protection continuously occurs for six times, it should not be resumed automatically, and you should press the ON/OFF button to resume.
During the process of running, if the running time of compressor exceeds the [t Protection times clearing of module] , the discharge protection is cleared
to recount. Stopped or transferred to supply air mode will clear the trouble times immediately (if the trouble can not be resumed, mode
transferring also will not clear it).
(10)Compressor overloads protection
If you measure the compressor overload switch action in 3s, the compressor should be stopped for overloading. The machine should be
allowed to operate after overload protection was measured to resume. If the overloading protection continuously occurs for three times, it
should not be resumed automatically, and you should press the ON/OFF button to resume. The protection times of compressor is allowed to
clear after the compressor run [t Protection times clearing of compressor overloading] 30 minutes.
(11)Phase current overcurrent protection of compressor
During the running process of compressor, you could measure the phase current of the compressor, and control it according to the following
steps:
1. Frequency limited
If [I Limited frequency phase current] ≤[I Phase current T frequency reducing phase current] , you should limit the frequency raising of compressor.
2. Reducing Frequency
If [I Frequency Reducing Phase Current]≤I Phase Current<[I Power Turn-Off Phase Current], the compressor shall continue to reduce frequency till the lowest frequency
limit or out of the condition of reducing frequency;
3. Power turn-off
If [I
]≥[I Power Turn-Off Phase Current], the compressor phase current shall stop working for overcurrent protection; if [I Phase Current]≤[I Frequency Reducing
], and the compressor have stopped working for 3 min, the machine shall be allowed to operate;
4. If the overcurrent protection of compressor phase current continuously occurs for six times, it should not be resumed automatically, and
you should press the ON/OFF button to resume. During the process of running, if the running time of compressor exceeds the [t Clearing Time of
Compressor Phase Current Times] , the overcurrent protection is cleared to recount.
Phase Current
Phase Current
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(12) Starting-up Failure Protection for Compressor
Stop the compressor after its starting-up fails, restart it after 20s if the fault doesn’t shows, and if they are all failing for the successive start
3 times, it shall be reported as Starting-up Failure, and then restart up it after 3 min. When it still not be able to operate through carry out the
above process for 5 times, it is available if press ON/OFF. And the compressor should be cleared the times after it run 2 min.
(13) Out-of-Step Protection for Compressor
The out-of-step protection signal should be detected immediately after starting-up compressor, and once find the out-of-step protection signal,
the out-of-step protection shall be stopped; if it can run for lasting power turn-off 3 min, the machine shall be allowed to operate. If it still can’t
run automatically when the out-of-step protection for compressor happens to stop working for 6 times in succession, it needs to press ON/OFF
to operate. And if the running time is more than 10 min, the power turn-off times for out-of-step protection shall be cleared and recounted.
(14) Voltage Abnormity Protection for DC Bus
To detect voltage abnormity protection for dc bus after completing the pre-charge:
1.Over-High Voltage Protection for DC Bus:
If it found the DCbus voltage UDC >[UDC Jiekuangchun Protection], turn off PFC and stop the compressor at once, and it shall show the DC over-high
voltage failure; it should clear out the failure when the voltage dropped to UDC <[UDC Jiekuangchun Recovery] and the compressor stopped for 3 min.
2.Over-Low Voltage Protection for DC Bus:
If it found the DC bus voltage UDC <[UDC Wantuochun Protection], turn off PFC and stop the compressor at once, and it shall show the DC over-low
voltage; and it should clear out the failure when the voltage raised to UDC >[UDC Wantuochun Recovery] and the compressor stopped for 3 min.
3.To detect voltage abnormity protect for DC bus when getting electricity:
If it found the DC bus voltage UDC >[UDC——Over-High Voltage], turn off the relay at once, and shows voltage abnormity failure for DC Bus. And the
failure can’t recover except to break off and get the electricity.
(15)Abnormity Protection for Four-way Valve
Under the model of heating operation in good condition: the compressor is detected [TInner Tube <(TInner Ring-T Abnormity Temperature Difference For Four-Way Valve
Reversion)], during the running, it should be regarded as four-way valve reversion abnormity. And then it can run if stop the reversion abnormity
protection for four-way valve 3 min; and if it still can’t run when the reversion abnormity protection for four-way valve happens to stop working
for 3 times in succession, it is available if presses ON/OFF.
Attention: the protection shall be shielded during the testing mode and defrosting process, and it shall be cleared out the failure and its times
immediately when turning off or delivering wind / cooling / dehumidifying mode conversed (the inverted mode don’t clear out the failure when it
can’t recover to operate).
(16) PFC Protection
1. After start up the PFC, it should detect the protection signal of PFC immediately; under the condition of PFC protection, it should turn off the
PFC and compressor at one time;
2. It shows the failure is cleared out if PFC Protection stopped working 3 min and recovers to run automatically;
3. If it still can’t run when it occurs PFC protection for 3 times in succession, it is available if presses ON/OFF; and clear the PFC Protection
times when start up PFC for 10min.
(17) Failure Detection for Sensor
1. Outdoor Ambient Sensor: detect the failure of sensor at all times.
2. Outdoor Tube Sensor: You should not detect the failure of outdoor tube sensor within 10 minutes heating
operation compressor except the defrosting, and you could detect it at other time.
3. Outdoor Exhaust Sensor:
(a) The compressor only detect the sensor failure after it start up 3 min in normal mode;
(b) It should detect the exhaust sensor failure immediately in the testing mode.
4. Module Temperature Sensor:
(a) Short-Circuit Detection: the compressor should be detected immediately when the module temperature
sensor occurs short-circuits;
(b) Open-Circuit Detection: the compressor should be detected on open-circuit when it runs 3min (it needn’t 30s
avoiding the module over-heated).
(c) Detect the sensor failure at all times in the testing mode.
5. Disposal for Sensor Protection
(1) When the short-circuit of sensor is detected within 30s, It is regarded as the temperature of sensor over-high (or infinitely high), and now
according to the over-high sensor, the machine should carry out the corresponding protection to stop working, and show the corresponding
temperature shutdown protection and sensor failure at the same time (for example: the compressor stops immediately when the outdoor tube
sensor short-circuit, and the machine shall show the overload protection and outdoor tube sensor failure).
(2) When the open-circuit of sensor is detected within 30s, The protection shall be stopped and it shall show the corresponding sensor failure.
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Service Manual
6. Electric Heating Function of Chassis
(1) When Toutdoor amb.≤32ºF , the electric heating of chassis will operate;
(2) When Toutdoor amb.>35.6ºF , the electric heating of chassis will stop operation;
(3)When 32ºF <Toutdoor amb.≤35.6ºF, the electric heating of chassis will keep original status.
7. Electric Heating Function of Compressor
(1) When Toutdoor amb.≤≤23ºF , compressor stops operation, while the electric heating of compressor starts operation;
(2) When Toutdoor amb.>28.4ºF , the electric heating of compressor stops operation;
(3) When 23ºF <Toutdoor amb.≤28.4ºF , the electric heating of compressor will keep original status.
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Part Ⅱ : Installation and Maintenance
7. Notes for Installation and Maintenance
Safety Precautions:
Important!
Please read the safety precautions carefully before
installation and maintenance.
The following contents are very important for installation
and maintenance.
Please follow the instructions below.
●The installation or maintenance must accord with the
instructions.
●Comply with all national electrical codes and local
electrical codes.
●Pay attention to the warnings and cautions in this
manual.
●All installation and maintenance shall be performed by
distributor or qualified person.
●All electric work must be performed by a licensed
technician according to local regulations and the
instructions given in this manual.
●Be caution during installation and maintenance. Prohibit
incorrect operation to prevent electric shock, casualty and
other accidents.
Warnings
Electrical Safety Precautions:
1. Cut off the power supply of air conditioner before
checking and maintenance.
2. The air condition must apply specialized circuit and
prohibit share the same circuit with other appliances.
3. The air conditioner should be installed in suitable
location and ensure the power plug is touchable.
4. Make sure each wiring terminal is connected firmly
during installation and maintenance.
5. Have the unit adequately grounded. The grounding wire
can’t be used for other purposes.
6. Must apply protective accessories such as protective
boards, cable-cross loop and wire clip.
7. The live wire, neutral wire and grounding wire of power
supply must be corresponding to the live wire, neutral
wire and grounding wire of the air conditioner.
8. The power cord and power connection wires can’t be
pressed by hard objects.
9. If power cord or connection wire is broken, it must be
replaced by a qualified person.
Installation and Maintenance
10. If the power cord or connection wire is not long enough,
please get the specialized power cord or connection wire
from the manufacture or distributor. Prohibit prolong the wire
by yourself.
11. For the air conditioner without plug, an air switch must
be installed in the circuit. The air switch should be all-pole
parting and the contact parting distance should be more than
1/8 inch.
12. Make sure all wires and pipes are connected properly and
the valves are opened before energizing.
13. Check if there is electric leakage on the unit body. If yes,
please eliminate the electric leakage.
14. Replace the fuse with a new one of the same specification
if it is burnt down; don’t replace it with a cooper wire or
conducting wire.
15. If the unit is to be installed in a humid place, the circuit
breaker must be installed.
Installation Safety Precautions:
1. Select the installation location according to the requirement of this manual.(See the requirements in installation
part)
2. Handle unit transportation with care; the unit should not
be carried by only one person if it is more than 44.09lb.
3. When installing the indoor unit and outdoor unit, a sufficient fixing bolt must be installed; make sure the installation
support is firm.
4. Ware safety belt if the height of working is above 78 3/4
inch.
5. Use equipped components or appointed components during installation.
6. Make sure no foreign objects are left in the unit after finishing installation.
Refrigerant Safety Precautions:
1. Avoid contact between refrigerant and fire as it generates
poisonous gas; Prohibit prolong the connection pipe by
welding.
2. Apply specified refrigerant only. Never have it mixed with
any other refrigerant. Never have air remain in the refrigerant
line as it may lead to rupture or other hazards.
3. Make sure no refrigerant gas is leaking out when installation
is completed.
4. If there is refrigerant leakage, please take sufficient measure
to minimize the density of refrigerant.
5. Never touch the refrigerant piping or compressor without
wearing glove to avoid scald or frostbite.
Improper installation may lead to fire hazard, explosion,
electric shock or injury.
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Service Manual
Main Tools for Installation and Maintenance
1. Level meter, measuring tape
2. Screw driver
3. Impact drill, drill head, electric drill
30
4. Electroprobe
5. Universal meter
6. Torque wrench, open-end wrench, inner
hexagon spanner
7. Electronic leakage detector
8. Vacuum pump
9. Pressure meter
10. Pipe pliers, pipe cutter
11. Pipe expander, pipe bender
12. Soldering appliance, refrigerant container
Installation and Maintenance
Service Manual
8. Installation
At least 8
Space to the ceiling
8.1 Installation Dimension Diagram
Space to the wall
At least 6
At least 6
ac
o
Space to the obstruction
Sp
the
At least 72
o
et
n
tio
uc
tr
bs
At least 24
At
18
t1
s
lea
Space to the floor
Space to the wall
the
to n
e
tio
ac
Sp truc
s
ob
12
st
a
le
At
Drainage pipe
At least 12
Space to th
e wall
ac
et
Sp
he
ot
o
n
tio
uc
tr
bs
At
le
t
as
78
At least 24
Space to the ob
struction
Uint:inch
Installation and Maintenance
31
Service Manual
Start installation
Preparation before installation
Read the requirements
for electric connection
select installation
location
Select indoor unit
installation location
Prepare tools
Select outdoor unit
installation location
Install the support of outdoor unit
(select it according to the actual situation)
Install wall-mounting
frame, drill wall holes
Connect pipes of indoor
unit and drainage pipe
Fix outdoor unit
Connect wires of indoor unit
Install drainage joint of outdoor unit
(only for cooling and heating unit)
Bind up pipes and
hang the indoor unit
Make the bound pipes pass
through the wall hole and then
connect outdoor unit
Connect pipes of outdoor unit
Connect wires of outdoor unit
Neaten the pipes
Vacuum pumping and leakage detection
Check after installation and test operation
Finish installation
Note: this flow is only for reference; please find the more detailed installation steps in this section.
32
Installation and Maintenance
Service Manual
8.2 Installation Parts-checking
No.
1
2
Name
Indoor unit
Outdoor unit
No.
8
9
3
Connection pipe
10
4
Drainage pipe
Wall-mounting
frame
Connecting
cable(power cord)
Wall pipe
11
5
6
7
12
13
Name
Sealing gum
Wrapping tape
Support of outdoor
unit
Fixing screw
Drainage plug(cooling
and heating unit)
Owner’s manual,
remote controller
Note:
1.Please contact the local agent for installation.
2.Don't use unqualified power cord.
8.3 Selection of Installation Location
1. Basic Requirement:
Installing the unit in the following places may cause
malfunction. If it is unavoidable, please consult the local dealer:
(1) The place with strong heat sources, vapors, flammable or
explosive gas, or volatile objects spread in the air.
(2) The place with high-frequency devices (such as welding
machine, medical equipment).
(3) The place near coast area.
(4) The place with oil or fumes in the air.
(5) The place with sulfureted gas.
(6) Other places with special circumstances.
2. Indoor Unit:
(1) There should be no obstruction near air inlet and air outlet.
(2) Select a location where the condensation water can be
dispersed easily and won't affect other people.
(3) Select a location which is convenient to connect the
outdoor unit and near the power socket.
(4) Select a location which is out of reach for children.
(5) The location should be able to withstand the weight of
indoor unit and won't increase noise and vibration.
(6) The appliance must be installed 72inch above floor.
(7) Don't install the indoor unit right above the electric
appliance.
(8) The appliance shall not be installed in the laundry.
3. Outdoor Unit:
(1) Select a location where the noise and outflow air emitted by
the outdoor unit will not affect neighborhood.
(2) The location should be well ventilated and away from
strong wind.
(3) The location should be able to withstand the weight of
outdoor unit.
(4) Make sure that the installation follows the requirement of
installation dimension diagram.
(5) Select a location which is out of reach for children and far
away from animals or plants.If it is unavoidable, please add
fence for safety purpose.
Installation and Maintenance
8.4 Electric Connection Requirement
1. Safety Precaution
(1) Must follow the electric safety regulations when installing
the unit.
(2) According to the local safety regulations, use qualified
power supply circuit and air switch.
(3) Make sure the power supply matches with the requirement
of air conditioner. Unstable power supply or incorrect wiring
may result in electric shock,fire hazard or malfunction. Please
install proper power supply cables before using the air
conditioner.
Air-conditioner
09/12K
Air switch capacity
15A
(4) Properly connect the live wire, neutral wire and grounding
wire of power socket.
(5) Be sure to cut off the power supply before proceeding any
work related to electricity and safety.
(6) Do not put through the power before finishing installation.
(7) For appliances with type Y attachment,the instructions
shall contain the substance of thefollowing.If the supply cord is
damaged,it must be replaced by the manufacturer,its service
agent or similarly qualified persons in order to avoid a hazard.
(8) The temperature of refrigerant circuit will be high, please
keep the interconnection cable away from the copper tube.
2. Grounding Requirement:
(1) The air conditioner is first class electric appliance. It must
be properly grounding with specialized grounding device
by a professional. Please make sure it is always grounded
effectively, otherwise it may cause electric shock.
(2) The yellow-green wire in air conditioner is grounding wire,
which can't be used for other purposes.
(3) The grounding resistance should comply with national
electric safety regulations.
(4) The appliance must be positioned so that the plug is
accessible.
(5) An all-pole disconnection switch having a contact separation
of at least 1/8 inch in all poles should be connected in fixed
wiring.
(6) Including an air switch with suitable capacity, please note
the following table. Air switch should be included magnet
buckle and heating buckle function, it can protect the circuitshort and overload. (Caution: please do not use the fuse only
for protect the circuit)
8.5 Installation of Indoor Unit
1. Choosing Installation Iocation
Recommend the installation location to the client and then
confirm it with the client.
2. Install Wall-mounting Frame
(1) Hang the wall-mounting frame on the wall; adjust it in
horizontal position with the level meter and then point out the
screw fixing holes on the wall.
(2) Drill the screw fixing holes on the wall with impact drill (the
specification of drill head should be the same as the plastic
expansion particle) and then fill the plastic expansion particles
33
Service Manual
in the holes.
(3) Fix the wall-mounting frame on the wall with tapping screws
(ST4.2X25TA) and then check if the frame is firmly installed by
pulling the frame. If the plastic expansion particle is loose,
please drill another fixing hole nearby.
3. Install Wall-mounting Frame
(1) Choose the position of piping hole according to the direction
of outlet pipe. The position of piping hole should be a little
lower than the wall-mounted frame.(As show in Fig.1)
Wall
Space
to the
wall
above
5 7/8
inch
Level meter
Mark in the middle of it
Left
Φ2 3/16inch
Rear piping hole
Wall
Space
to the
wall
above
5 7/8
inch
Righ
Φ2 3/16inch
Rear piping hole
Fig.1
5. Connect the Pipe of Indoor Unit
(1) Aim the pipe joint at the corresponding bellmouth.(As show
in Fig.5)
(2) Pretightening the union nut with hand.
(3) Adjust the torque force by referring to the following sheet.
Place the open-end wrench on the pipe joint and place the
torque wrench on the union nut. Tighten the union nut with
torque wrench.(As show in Fig.6)
(4) Wrap the indoor pipe and joint of connection pipe with
insulating pipe, and then wrap it with tape.(As show in Fig.7)
Open-end
wrench
Union nut
Pipe joint
Union nut
Pipe
Fig.5
Outdoor
Insulating pipe
Fig.7
Refer to the following table for wrench moment of force:
Hex nut diameter(inch)
Φ1/4
Φ3/8
Φ1/2
Φ5/8
Φ3/4
2 3/16 inch
5-10°
Fig.6
Indoor pipe
(2) Open a piping hole with the diameter of 2 3/16inch on the
selected outlet pipe position.In order to drain smoothly, slant
the piping hole on the wall slightly downward to the outdoor
side with the gradient of 5-10°.(As show in Fig.2)
Indoor
Pipe
Torque wrench
Fig.2
Note:
(1) Pay attention to dust prevention and take relevant safety
measures when opening the hole.
(2) The plastic expansion particles are not provided and should
be bought locally.
4. Outlet Pipe
(1) The pipe can be led out in the direction of right, rear right,
left or rear left.(As show in Fig.3)
(2) When selecting leading out the pipe from left or right, please
cut off the corresponding hole on the bottom case.(As show in
Fig.4)
Tightening torque(ft·Ibf)
11.10~14.75
22.12~29.50
33.19~40.56
44.24~47.94
51.32~55.31
6. Install Drain Hose
(1) Connect the drain hose to the outlet pipe of indoor unit.(As
show in Fig.8)
(2) Bind the joint with tape.(As show in Fig.9)
Outlet pipe
Fig.8
Outlet
pipe
Drain hose
Drain hose
Tape
Fig.9
Note:
Left
Fig.3
Left
Rear right
Right
Cut off
the hole
34
Right
Rear left
(1) Add insulating pipe in the indoor drain hose in order to
prevent condensation.
(2) The plastic expansion particles are not provided.
(As show in Fig.10)
Drain hose
Fig.4
Insulating pipe
Fig.10
Installation and Maintenance
Service Manual
7. Connect Wire of Indoor Unit
8. Bind up Pipe
(1) Open the panel, remove the screw on the wiring cover and
then take down the cover.(As show in Fig.11)
(1) Bind up the connection pipe, power cord and drain hose
with the band.(As show in Fig.14)
(2) Reserve a certain length of drain hose and power cord
for installation when binding them. When binding to a certain
degree, separate the indoor power and then separate the drain
hose.(As show in Fig.15)
(3) Bind them evenly.
(4) The liquid pipe and gas pipe should be bound separately at
the end.
Screw
Panel
Fig.11
Wiring cover
(2) Fix the wire crossing board on connection wire sleeve at
the bottom case; let the connection wire sleeve go through the
wire crossing hole at the back of indoor unit, and then pull it out
from the front.(As show in Fig.12)
Indoor unit
Gas
pipe
Fig.14
Indoor and
outdoor power cord
Liquid
pipe
Band
Drain hose
Connection pipe
connection wire sleeve
Drain hose
Fig.12
(3) Remove the wire clip; connect the power connection wire
to the wiring terminal; tighten the screw and then fix the power
connection wire with wire clip.(As show in Fig.13)
Indoor power cord
Band
Fig.15
Note:
(1) The power cord and control wire can't be crossed or
winding.
(2) The drain hose should be bound at the bottom.
L1’
S
L2’
G
green
white black red
(brown) (yellow(blue)
green)
Outdoor unit connection
Fig.13
(4) Put wiring cover back and then tighten the screw.
(5) Close the panel.
Note:
(1) All wires of indoor unit and outdoor unit should be
connected by a professional.
(2) If the length of power connection wire is insufficient, please
contact the supplier for a new one. Avoid extending the wire by
yourself.
(3) For the air conditioner with plug, the plug should be
reachable after finishing installation.
(4) For the air conditioner without plug, an air switch must be
installed in the line. The air switch should be all-pole parting
and the contact parting distance should be more than 3mm.
Installation and Maintenance
9. Hang the Indoor Unit
(1) Put the bound pipes in the wall pipe and then make them
pass through the wall hole.
(2) Hang the indoor unit on the wall-mounting frame.
(3) Stuff the gap between pipes and wall hole with sealing gum.
(4) Fix the wall pipe.(As show in Fig.16)
(5) Check if the indoor unit is installed firmly and closed to the
wall.(As show in Fig.17)
Indoor
Wall pipe
Outdoor
Sealing gum
Fig.17
Upper hook
Fig.16
Lower hook of
wall-mounting frame
Note:
Do not bend the drain hose too excessively in order to prevent
blocking.
35
Service Manual
8.6 Installation of Outdoor Unit
Refer to the following table for wrench moment of force:
1. Fix the Support of Outdoor Unit(Select it according to
the actual installation situation)
Hex nut diameter(inch)
Φ1/4
Φ3/8
Φ1/2
Φ5/8
Φ3/4
(1) Select installation location according to the house structure.
(2) Fix the support of outdoor unit on the selected location with
expansion screws.
Note:
(1) Take sufficient protective measures when installing the
outdoor unit.
(2) Make sure the support can withstand at least four times the
unit weight.
(3) The outdoor unit should be installed at least 1 3/16 inch
above the floor in order to install drain joint.(As show in Fig.18)
(4) For the unit with cooling capacity of 2300W~5000W, 6
expansion screws are needed; for the unit with cooling capacity
of 6000W~8000W, 8 expansion screws are needed; for the
unit with cooling capacity of 10000W~16000W, 10 expansion
screws are needed.
Tightening torque(ft·Ibf)
11.10~14.75
22.12~29.50
33.19~40.56
44.24~47.94
51.32~55.31
5. Connect Outdoor Electric Wire
(1) Let the connection wire sleeve go through the two holes of
baffle; tighten the connection joint of sleeve and baffle; remove
the wire clip; connect the power connection wire and power
cord to the wiring terminal according to the color; fix them with
screws.(As show in Fig.23)
09、12K:
L1’
S
L1
white
(blue)
L2’
L2
black
red
G
G
green
(brown) (yellowgreen)
green(yellow-green)
black(brown)
white(blue)
L2
L1
POWER
Drain vent
At least 1 1/6 inch above the floor
Drain hose
Fig.18
Fig.19
2. Install Drain Joint(only for cooling and heating unit)
(1) Connect the outdoor drain joint into the hole on the chassis.
(2) Connect the drain hose into the drain vent.
(As show in Fig.19)
3. Fix Outdoor Unit
(1) Place the outdoor unit on the support.
(2) Fix the foot holes of outdoor unit with bolts.
(As show in Fig.20)
Foot holes
Small Handle
valve cover
Foot holes
Fig.21
Fig.20
4. Connect Indoor and Outdoor Pipes
(1) Remove the screw on the small handle and valve cover of
outdoor unit and then remove the handle and valve cover.(As
show in Fig.21)
(2) Remove the screw cap of valve and aim the pipe joint at the
bellmouth of pipe.(As show in Fig.22)
Liquid pipe
Liquid
valve
(2) Fix the power connection wire and power cord with wire clip.
(3) Fix the stopper on handle with screw.
Note:
(1) After tightening the screw, pull the power cord slightly to
check if it is firm.
(2) Never cut the power connection wire to prolong or shorten
the distance.
6. Neaten the Pipes
(1) The pipes should be placed along the wall, bent reasonably
and hidden possibly. Min. semidiameter of bending the pipe is 3
15/16inch.
(2) If the outdoor unit is higher than the wall hole, you must set
a U-shaped curve in the pipe before pipe goes into the room,
in order to prevent rain from getting into the room.(As show in
Fig.24)
The drain hos
can't raise
upwards
Wall
Fig.24
Union nut
Fig.22
(3) Pretightening the union nut with hand.
(4) Tighten the union nut with torque wrench .
36
Fig.23
U-shaped curve
Pipe joint
gas pipe
gas valve
Indoor unit connection
Chassis
Outdoor drain joint
Fig.25
Drain hose
Note:
(1) The through-wall height of drain hose shouldn't be higher
than the outlet pipe hole of indoor unit.(As show in Fig.25)
(2) Slant the drain hose slightly downwards. The drain hose
can't be curved, raised and fluctuant, etc.(As show in Fig.26)
Installation and Maintenance
Service Manual
(3) The water outlet can't be placed in water in order to drain
smoothly.(As show in Fig.27)
8.8 Check after Installation and Test
Operation
1. Check after Installation
Check according to the following requirement after finishing
installation.
The drain hose can't be fluctuant
NO.
The drain hose
can't be fluctuant
The water
outlet can't be
fluctuant
1
The water outlet
can't be placed
in water
2
Fig.27
Fig.26
4
8.7 Vacuum Pumping and Leak Detection
1. Use Vacuum Pump
(1) Remove the valve caps on the liquid valve and gas valve
and the nut of refrigerant charging vent.
(2) Connect the charging hose of piezometer to the refrigerant
charging vent of gas valve and then connect the other charging
hose to the vacuum pump.
(3) Open the piezometer completely and operate for 10-15min
to check if the pressure of piezometer remains in -14.5ISP.
(4) Close the vacuum pump and maintain this status for 1-2min
to check if the pressure of piezometer remains in -14.5ISP. If
the pressure decreases, there may be leakage.
(5) Remove the piezometer, open the valve core of liquid valve
and gas valve completely with inner hexagon spanner.
(6) Tighten the screw caps of valves and refrigerant charging
vent.(As show in Fig.28)
Liquid valve
Piezometer
Lo
Valve cap
Nut of refrigerant
Charging vent
Vacuum pump
Inner hexagon
spanner
Fig.28
Is water drained well?
Is the voltage of power
supply according to the
5
voltage marked on the
nameplate?
Is electric wiring and
6 pipeline installed
correctly?
Is the unit grounded
7
securely?
Does the power cord
8
follow the specification?
Is there any obstruction
9
in air inlet and air outlet?
The dust and
sundries caused
10
during installation are
removed?
The gas valve and liquid
11 valve of connection pipe
are open completely?
Possible malfunction
The unit may drop, shake or
emit noise.
It may cause insufficient cooling
(heating) capacity.
It may cause condensation and
water dripping.
It may cause condensation and
water dripping.
It may cause malfunction or
damage the parts.
It may cause malfunction or
damage the parts.
It may cause electric leakage.
It may cause malfunction or
damage the parts.
It may cause insufficient cooling
(heating).
It may cause malfunction or
damaging the parts.
It may cause insufficient cooling
(heating) capacity.
Hi
Gas valve
Refrigerant charging
vent
3
Items to be checked
Has the unit been
installed firmly?
Have you done the
refrigerant leakage test?
Is heat insulation of
pipeline sufficient?
Close
Open
2. Test Operation
(1) Preparation of test operation
● The client approves the air conditioner installation.
● Specify the important notes for air conditioner to the client.
(2) Method of test operation
● Put through the power, press ON/OFF button on the remote
controller to start operation.
● Press MODE button to select AUTO, COOL, DRY, FAN and
HEAT to check whether the operation is normal or not.
● If the ambient temperature is lower than 16℃ , the air
conditioner can’t start cooling.
2. Leakage Detection
(1) With leakage detector:
Check if there is leakage with leakage detector.
(2) With soap water:
If leakage detector is not available, please use soap water for
leakage detection. Apply soap water at the suspected position
and keep the soap water for more than 3min. If there are air
bubbles coming out of this position, there's a leakage.
Installation and Maintenance
37
Service Manual
9. Maintenance
9.1 Error Code List
Name of malfunction
Anti-freezing protection
Block or Low pressure of refrigerant system
Compressor exhaust high temperature protection
AC over-current protection
Communication failure between indoor unit and outdoor unit
Anti-high temperature protection
No feedback of indoor fan motor
Jumper cap malfunction protection
Indoor unit and outdoor unit doesn't match
Outdoor DC fan motor malfunction
Power protection
Gathering refrigerant
Indoor ambient sensor open or short circuit
Indoor tube sensor open or short circuit
Outdoor ambient sensor open or short circuit
Outdoor tube sensor open or short circuit
Exhaust sensor open or short circuit
Overload limit / drop frequency
Over current limit / drop frequency
High exhaust temperature limit / drop frequency
Refrigerant leakage protection
Anti-freezing limit / drop frequency
Defrosting
Compressor overload protection
IPM protection
Module temperature is too high
PFC protection
Loading EEPROM malfunction
High PN voltage protection
Low PN voltage protection
4-way valve reversal abnormal
DRED1 / DRED2 / DRED3
Compressor Min frequence in test state
Compressor rated frequence in test state
Compressor maximum frequence in test state
Compressor intermediate frequence in test state
Compressor is running(normal)
The temperature for turning on the unit is reached(normal)
Frequency limiting (module temperature )
Frequency limiting (power)
Display of lamp
(the times of blinking)
Indoor
Outdoor
Display of
indoor unit
E2
E3
E4
E5
E6
E8
H4
H6
C5
LP
L3
L9
Fo
F1
F2
F3
F4
F5
F6
F8
F9
F0
FH
H1
H3
H5
H5
HC
EE
PH
PL
U7
d1/d2/d3
P0
P1
P2
P3
R
2
3
4
5
6
C
H
R
G
9
7
5
O/U
8
11
15
19
23
20
1
Y
3
6
6
4
16
14
9
1
1
2
3
4
5
6
8
9
10
2
6
5
7
3
1
2
9
2
1
3
5
5
6
15
11
21
20
2
8
4
10
14
11
13
12
4
1
EU
LU
6
24
8
11
13
6
Notes: R(Indoor)--Running C--Cooling H--Heating Y--Yellow R(Outdoor)--Red G--Green
O/U--OFF or Unblink
The display difference between Fo and F0 is 'o' is the bottom part of figure 8
38
Installation and Maintenance
Service Manual
9.2 Troubleshooting for Main Malfunction
●Indoor unit:
1. Malfunction of Temperature Sensor F1, F2
Main detection points:
● Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted?
● Is there short circuit due to trip-over of the parts?
● Is the temperature sensor broken?
Start
● Is mainboard broken?
Malfunction diagnosis process:
Is the wiring terminal between the
temperature sensor and the controller
loosened or poorly contacted?
Yes
Insert the temperature
sensor tightly
No
No
Is there short circuit due to tripover of the parts
Is malfunction
eliminated
Yes
Make the parts upright
No
No
Is the temperature sensor normal
according to the resistance table?
Is malfunction
eliminated
No
Yes
Yes
Replace it with a
temperature sensor with
the same model
Yes
No
Is malfunction
eliminated
Replace the mainboard with
the same model.
Yes
End
Installation and Maintenance
39
Service Manual
2. Malfunction of Blocked Protection of IDU Fan Motor H6
Main detection points:
● SmoothlyIs the control terminal of PG motor connected tightly?
● SmoothlyIs the feedback interface of PG motor connected tightly?
● The fan motor can't operate?
● The motor is broken?
● Detectioncircuit of the mainboard is defined abnormal?
Malfunction diagnosis process:
Start
While power is off stir the blade
No
with a tool to see whether the
blade rotates smoothly
Tighten the screw; reassemble the blade, motor
and shaft bearing rubber base sub-assy to make
sure there is no foreign object between them
Yes
No
Is malfunction
eliminated
Check if the connection of PG
motor feedback terminal is firm
Yes
No
Insert the control terminal
of PG motor tightly
Yes
No
Check if the connection of PG
motor control terminal is firm
Is malfunction
eliminated
Yes
No
Reinstall the blade
and motor correctly
Yes
No
Turn on the unit again; measure
whether the output voltage on
control terminal for PG motor is
more than 50V within 1 min after
the louvers are opened
Yes
Is malfunction
eliminated
Yes
Yes
Yes
Is the motor started up
No
Measure the voltage of this foot to
neutral wire on the mainboard
Replace PG motor
No
No
Is malfunction
eliminated
Yes
Replace the mainboard
with the same model
End
40
Installation and Maintenance
Service Manual
3. Malfunction of Protection of Jumper Cap C5
Main detection points:
● Is there jumper cap on the mainboard?
● Is the jumper cap inserted correctly and tightly?
● The jumper is broken?
● The motor is broken?
● Detection circuit of the mainboard is defined abnormal?
Malfunction diagnosis process:
Start
No
Is there jumper cap on the mainboard?
Appearance of the
jumper cap
Assemble the jumper
cap with the same model
Yes
No
Is the jumper cap inserted correctly
and tightly?
Is malfunction
eliminated
No
Insert the jumper
cap tightly
Yes
No
Is malfunction
eliminated
Yes
Replace the jumper cap with
the same model
Is malfunction
eliminated
Yes
Yes
No
Replace the mainboard
with the same model
End
Installation and Maintenance
41
Service Manual
4. Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor U8
Main detection points:
● Instant energization afte de-energization while the capacitordischarges slowly?
● The zero-cross detectioncircuit of the mainboard is defined abnormal?
Malfunction diagnosis process:
Start
Turn power off for
1minute,the turn
back on
U8 is still
displayed
No
The unit returns to normal.
Conclusion:U8 is displayed due to
power off/on while the
capacitor discharges slowly.
Yes
The zero-cross detection circuit
of the mainboard is defined
abnormal.Replace the mainboard
with the same model
End
42
Installation and Maintenance
Service Manual
●Outdoor unit:
(1) Capacitor charge fault (Fault with outdoor unit) (AP1 below refers to the outdoor control panel)
Main Check Points:
●Use AC voltmeter to check if the voltage between terminal L and N on the wiring board is within 210VAC~240VAC.
●Is the reactor (L) correctly connected? Is the connection loose or fallen? Is the reactor (L) damaged?
Fault diagnosis process:
Turn on the unit
and wait 1 minute
Use DC voltmeter
to measure the
voltage on the two
ends of electrolytic
capacitor
Voltage higher than 200V?
Y
Fault with the voltage
testing circuit on
control panel AP1
Replace the control
panel AP1
N
Measure the AC voltage between
terminalL and N on wiring board
XT(power supply)
Voltage within
210VAC~250VAC?
N
Shut down the power
and repair the power
supply to restore the
range
210VAC~250VAC
power on and
restart the unit
If the fault is
eliminated?
Y
Y
Shut down the power and wait 20 minutes;
or use DC voltmeter to measure the voltage
on the two ends of capacitor , until the
voltage is lower than 20V
N
Check the
connection of reactor
(L in the Electrical
Wiring Diagram)
If the wiring of
reactor Lis normal?
N
Connect the reactor
Laccording to Electrical Wiring Diagram correctly
Re-energize and
turn on the unit
If the fault is
eliminated?
Y
Y
Replace the control
panel AP1
N
End
Installation and Maintenance
43
Service Manual
(2) IPM Protection, Out-of-step Fault, Compressor Phase Overcurrent (AP1 below refers to the outdoor control
panel)
Main check points:
●Is the connection between control panel AP1 and compressor COMP secure? Loose? Is the connection in correct order?
●Is the voltage input of the machine within normal range? (Use AC voltmeter to measure the voltage between terminal L and N on the
wiring board XT)
●Is the compressor coil resistance normal? Is the insulation of compressor coil against the copper tube in good condition?
●Is the working load of the machine too high? Is the radiation good?
●Is the charge volume of refrigerant correct?
Fault diagnosis process:
44
Installation and Maintenance
Service Manual
Energize and
switch on
IPM protection
occurs after the
machine has run for
a period of time?
Y
Use AC voltmeter
to measure the
voltage between
terminal L and N
on the wiring
board XT)
If the voltage
between terminal L
and N on wiring
board XT is within
210VAC~250VAC?
N
Check the supply
voltage and
restore it to
210VAC~250VAC
Y
Restart the unit. Before
protection occurs,
use DC voltmeter to
measure the voltage
between the two
ends of electrolytic
capacitor on control
panel AP1
Voltage between
the two ends of celectrolytic
capacitor is
higher than
250V
Y
Please confirm:
1. If the indoor and
outdoor heat
exchangers are
dirty? If they are
obstructed by other
objects which affect
the heat exchange
of indoor and
outdoor unit.
2. If the indoor and
outdoor fans are
working normally?
3. If the environment
temperature is too
high, resulting in
that the system
pressure is too high
and exceeds the
permissible range?
4. If the charge
volume of
refrigerant is too
much, resulting in
that the system
pressure is too
high?
5. Other conditions
resulting in that the
system pressure
becomes too high.
Stop the unit and
disconnect the power
supply. Then, check
the connection of
capacitor C2
according to Electrical
Wiring Diagram.
The connection
of capacitor C2
is loose.
If capacitor
C2 is failed?
N
Replace the capacitor
C2. Then, energize
and start the unit.
Y
Replace the
control panel AP1
N
If there is any
abnormality
described above?
Use ohmmeter to
measure the resistance
between the two
terminals of compressor
COMP and copper tube.
Y
Reconnect the
capacitor C2 according
to Electrical Wiring
Diagram. Then,
Restart the
unit.
Y
Stop the unit and
disconnect the power
supply. Wait 20 minutes,
or use DC voltmeter to
measure the voltage
between the two ends of
capacitor C2, until the
voltage is lower than 20V
Remove the wires
on the two ends of
capacitor C2. Then,
use capacitance
meter to measure
the capacitor C2.
Verify as per the
Parameters Sheet.
Y
Take corrective actions
according to Technical
Service Manual, and
then energize and start
the unit.
Connect the control panel
AP1 and compressor
COMP correctly according
to the Electrical Wiring
Diagram. Then, energize
and start the unit.
If the
resistance is
normal?
N
N
If the unit can
work normallv?
If the unit can
work normally?
Y
Y
N
Replace the
control panel AP1
N
Use ohmmeter to
measure the resistance
between the three
terminals on compressor
COMP, and compare the
measurements with the
compressor resistance on
Service Manual.
Y
N
Refer to the
Electrical Wiring
Diagram and check
if the connection
between AP1 and
COMP is loose and if
the connection order
is correct.
If the connection
between AP1 and
COMP is unsecure
or the connection
order is wrong?
If the unit can
work
normally?
N
If the unit can
work
normally?
If the unit can
work normally?
Y
N
Y
Replace the
compressor
COMP
N
Resistance higher
than 500MΩ?
Y
Replace the
control panel
AP1
END
Installation and Maintenance
45
Service Manual
(3) High temperature and overload protection diagnosis (AP1 hereinafter refers to the control board of the
outdoor unit)
Mainly detect:
●Is outdoor ambient temperature in normal range?
●Are the outdoor and indoor fans operating normally?
●Is the heat dissipation environment inside and outside the unit good?
Fault diagnosis process:
Overheat and high
temperature protection
Is outdoor ambient temperature higher than 53?
Y
Normal protection, please operate
it after the outdoor ambient temperature is normalized.
N
20 minutes after the complete
unit is powered off.
Is heat dissipation of the indoor unit
and outdoor unit abnormal?
Y
Improve the heat
dissipation environment of the unit
N
Does the outdoor fan work normally?
N
1. Check if the fan terminal OFAN
is connected correctly
2. Resistance between any two
terminals is measure by an ohm
gauge and should be less than 1K
Ohm.
Y
Replace the
control panel AP1
Replace the fan
capacitor C1
Replace the
outdoor fan
End
46
Installation and Maintenance
Service Manual
(4) Start-up failure (following AP1 for outdoor unit control board)
Mainly detect:
●Whether the compressor wiring is connected correct?
●Is compressor broken?
●Is time for compressor stopping enough?
Fault diagnosis process:
Power on the unit
Is stop time of the compressor
longer than 3 minutes?
Restart it up after
3 minutes
N
Y
Does startup fail?
Y
Are the wires for the compressor connected
correctly? Is connection sequence right?
N
Connect the wires as
per the connection
diagram
Y
Replace the control panel AP1
N
If the fault is eliminated?
N
Replace the
compressor
Y
End
Installation and Maintenance
47
Service Manual
(5) Out of step diagnosis for the compressor (AP1 hereinafter refers to the control board of the outdoor unit)
Mainly detect:
●Is the system pressure too high?
●Is the input voltage too low?
Fault diagnosis process:
Out of step occurs once the
unit is powered on.
Out of step occurs in
operation
Is stop time of the
compressor longer than
3 minutes?
Is the outdoor fan working
normally?
N
Check if the fan terminal
OFAN is connected correctly
N
Replace the fan
capacitor C1
Y
Y
Is the outdoor unit blocked
by foreign objects?
Are the wires for the compressor connected
correctly? Is connection sequence right?
Is the connection made in clockwise
direction?
N
Connect the
wires correctly
Replace the
outdoor fan
Y
Remove foreign objects
N
Replace the
control panel AP1
Y
Replace the control
panel AP1
If the fault is eliminated?
Y
If the fault is eliminated?
N
Y
N
Replace the
compressor
Replace the
compressor
End
End
48
Installation and Maintenance
Service Manual
(6) Overload and air exhaust malfunction diagnosis (following AP1 for outdoor unit control board)
Mainly detect:
●Is the PMV connected well or not? Is PMV damaged?
●Is refrigerant leaked?
Fault diagnosis process:
20 minutes after the
complete unit is
powered off
Is the terminal FA for the
electronic expansion valve
connected correctly?
Connect the
wires correctly
N
Resistances between the first four pins
close to the terminal hole and the fifth
pin are almost the same, less than 100
ohm.
Replace the electronic
expansion valve
If the fault is eliminated?
Y
N
Replace the
control panel
AP1
If the fault is eliminated?
N
Coolant leakage, refilling
the coolant
End
Installation and Maintenance
49
Service Manual
(7) Power factor correct or (PFC) fault (a fault of outdoor unit) (AP1 hereinafter refers to the control board of the
outdoor unit)
Mainly detect:
●Check if the reactor (L) of the outdoor unit and the PFC capacitor are broken
Fault diagnosis process:
Start
Check wiring of the
reactor (L) of the
outdoor unit and the
PFC capacitor
Whether there is any
damage or
short-circuit?
Y
Replace it as per the
wiring diagram and
reconnect the wires
If the fault is eliminated?
N
Remove the PFC capacitor
and measure resistance
between the two terminals.
Is the resistance around zero?
N
Y
The capacitor is
short circuited and
the capacitor
should be replaced
Restart the unit
If the fault is eliminated?
Y
N
Disconnect the terminals for the
reactor and measure the resistance
between the two terminals of the
reactor by an ohm gauge
Whether there is any damage
or short-circuit?
N
Y
Replace the reactor
Restart the unit
If the fault is eliminated?
Y
N
Replace the control
panel AP1
N
Y
End
50
Installation and Maintenance
Service Manual
(8) Communication malfunction: (following AP1 for outdoor unit control board)
Mainly detect:
●Is there any damage for the indoor unit mainboard communication circuit? Is communication circuit damaged?
●Detect the indoor and outdoor units connection wire and indoor and outdoor units inside wiring is connect well or not, if is there any
damage?
Fault diagnosis process:
Start
Y
Did the equipment operate
normally before the failure
occurs?
N
Check the wiring of the indoor and
outdoor units with reference to the
wiring diagram
Check wiring inside of
the indoor and outdoor
units
Y
N
Is the connection right?
N
The AP1 voltage
detection circuit
is at fault
Y
Correctly connect the
corresponding wires for
the indoor and outdoor
units with reference to
the wiring diagram
Are wires broken?
N
If the fault is eliminated?
N
Check the communication
circuit of the outdoor unit
If the fault is eliminated?
The communication
circuit is abnormal
Y
N
Replace the main board
of the indoor unit
Replace the main board
AP1 of the outdoor unit
If the fault is eliminated?
N
Y
Y
Installation and Maintenance
End
Y
51
Service Manual
9.3 Troubleshooting for Normal Malfunction
1. Air Conditioner Can't be Started Up
Possible Causes
No power supply, or poor
connection for power plug
Discriminating Method (Air conditioner Status)
Troubleshooting
Confirm whether it's due to power failure. If yes,
After energization, operation indicator isn’t bright wait for power recovery. If not, check power
and the buzzer can't give out sound
supply circuit and make sure the power plug is
connected well.
Wrong wire connection between
indoor unit and outdoor unit,
Under normal power supply circumstances,
or poor connection for wiring
operation indicator isn't bright after energization
terminals
Check the circuit according to circuit diagram
and connect wires correctly. Make sure all
wiring terminals are connected firmly
Make sure the air conditioner is grounded
reliably
Make sure wires of air conditioner is connected
After energization, room circuit breaker trips off at
Electric leakage for air conditioner
correctly
once
Check the wiring inside air conditioner. Check
whether the insulation layer of power cord is
damaged; if yes, place the power cord.
Model selection for air switch is
After energization, air switch trips off
Select proper air switch
improper
After energization, operation indicator is bright,
Replace batteries for remote controller
Malfunction of remote controller while no display on remote controller or buttons
Repair or replace remote controller
have no action.
2. Poor Cooling (Heating) for Air Conditioner
Possible Causes
Set temperature is improper
Rotation speed of the IDU fan
motor is set too low
Filter of indoor unit is blocked
Discriminating Method (Air conditioner Status)
Troubleshooting
Observe the set temperature on remote controller Adjust the set temperature
Small wind blow
Set the fan speed at high or medium
Check the filter to see it's blocked
Clean the filter
Check whether the installation postion is proper
Installation position for indoor unit
Adjust the installation position, and install the
according to installation requirement for air
and outdoor unit is improper
rainproof and sunproof for outdoor unit
conditioner
Discharged air temperature during cooling is
higher than normal discharged wind temperature;
Discharged air temperature during heating is
Find out the leakage causes and deal with it.
Refrigerant is leaking
lower than normal discharged wind temperature; Add refrigerant.
Unit's pressure is much lower than regulated
range
Malfunction of 4-way valve
Blow cold wind during heating
Replace the 4-way valve
Discharged air temperature during cooling is
higher than normal discharged wind temperature;
Discharged air temperature during heating is
Malfunction of capillary
lower than normal discharged wind temperature; Replace the capillary
Unit't pressure is much lower than regulated
range. If refrigerant isn’t leaking, part of capillary
is blocked
Flow volume of valve is
The pressure of valves is much lower than that
Open the valve completely
insufficient
stated in the specification
Refer to point 3 of maintenance method for
Malfunction of horizontal louver Horizontal louver can’t swing
details
Refer to troubleshooting for H6 for maintenance
Malfunction of the IDU fan motor The IDU fan motor can’t operate
method in details
Refer to point 4 of maintenance method for
Malfunction of the ODU fan motor The ODU fan motor can't operate
details
Refer to point 5 of maintenance method for
Malfunction of compressor
Compressor can't operate
details
3. Horizontal Louver Can't Swing
Possible Causes
Discriminating Method (Air conditioner Status)
Wrong wire connection, or poor
connection
Check the wiring status according to circuit
diagram
Stepping motor is damaged
Stepping motor can't operate
Others are all normal, while horizontal louver
can't operate
Main board is damaged
52
Troubleshooting
Connect wires according to wiring diagram to
make sure all wiring terminals are connected
firmly
Repair or replace stepping motor
Replace the main board with the same model
Installation and Maintenance
Service Manual
4. ODU Fan Motor Can't Operate
Possible causes
Wrong wire connection, or poor
connection
Discriminating method (air conditioner status)
Check the wiring status according to circuit
diagram
Troubleshooting
Connect wires according to wiring diagram to
make sure all wiring terminals are connected
firmly
Measure the capacity of fan capacitor with an
Capacity of the ODU fan motor is universal meter and find that the capacity is out of
Replace the capacity of fan
damaged
the deviation range indicated on the nameplate of
fan capacitor.
Power voltage is a little low or
Use universal meter to measure the power supply
Suggest to equip with voltage regulator
high
voltage. The voltage is a little high or low
When unit is on, cooling/heating performance
Change compressor oil and refrigerant. If no
Motor of outdoor unit is damaged is bad and ODU compressor generates a lot of
better, replace the compressor with a new one
noise and heat.
5. Compressor Can't Operate
Possible causes
Wrong wire connection, or poor
connection
Discriminating method (air conditioner status)
Check the wiring status according to circuit
diagram
Troubleshooting
Connect wires according to wiring diagram to
make sure all wiring terminals are connected
firmly
Measure the capacity of fan capacitor with an
universal meter and find that the capacity is out of
Replace the compressor capacitor
the deviation range indicated on the nameplate of
fan capacitor.
Power voltage is a little low or
Use universal meter to measure the power supply
Suggest to equip with voltage regulator
high
voltage. The voltage is a little high or low
Use universal meter to measure the resistance
Coil of compressor is burnt out
Repair or replace compressor
between compressor terminals and it's 0
Cylinder of compressor is blocked Compressor can't operate
Repair or replace compressor
Capacity of compressor is
damaged
6. Air Conditioner is Leaking
Possible causes
Discriminating method (air conditioner status)
Troubleshooting
Eliminate the foreign objects inside the drain
pipe
Replace drain pipe
Drain pipe is blocked
Water leaking from indoor unit
Drain pipe is broken
Water leaking from drain pipe
Water leaking from the pipe connection place of
Wrap it again and bundle it tightly
indoor unit
Wrapping is not tight
7. Abnormal Sound and Vibration
Possible causes
Discriminating method (air conditioner status)
When turn on or turn off the unit,
the panel and other parts will
There's the sound of "PAPA"
expand and there's abnormal
sound
When turn on or turn off the unit,
there's abnormal sound due
Water-running sound can be heard
to flow of refrigerant inside air
conditioner
Foreign objects inside the indoor
unit or there're parts touching
There's abnormal sound fro indoor unit
together inside the indoor unit
Foreign objects inside the outdoor
unit or there're parts touching
There's abnormal sound fro outdoor unit
together inside the outdoor unit
Short circuit inside the magnetic During heating, the way valve has abnormal
coil
electromagnetic sound
Abnormal shake of compressor
Outdoor unit gives out abnormal sound
Abnormal sound inside the
compressor
Abnormal sound inside the compressor
Installation and Maintenance
Troubleshooting
Normal phenomenon. Abnormal sound will
disappear after a few minutes.
Normal phenomenon. Abnormal sound will
disappear after a few minutes.
Remove foreign objects. Adjust all parts'
position of indoor unit, tighten screws and stick
damping plaster between connected parts
Remove foreign objects. Adjust all parts'
position of outdoor unit, tighten screws and
stick damping plaster between connected parts
Replace magnetic coil
Adjust the support foot mat of compressor,
tighten the bolts
If add too much refrigerant during maintenance,
please reduce refrigerant properly. Replace
compressor for other circumstances.
53
Service Manual
10. Exploded View and Parts List
10.1 Indoor Unit
54
Installation and Maintenance
Service Manual
Description
NO.
Part Code
Qty
GWC09QB-D3DNA6E/I(LC)
GWH09QB-D3DNA6E/I(LCLH)
Product Code
CB427N01900
CB427N02200
1
Front Panel
2002269601S
2002269601S
1
2
Filter Sub-Assy
11122219
11122219
2
3
Display Board
30565265
30565265
1
4
Front Case Assy
00000200069
00000200069
1
5
Guide Louver
1051276301
1051276301
1
6
Helicoid Tongue
2611250802
2611250802
1
7
Left Axile Bush
10512037
10512037
1
8
Rear Case assy
00000100066
00000100066
1
9
Drainage Hose
0523001408
0523001408
1
10
Ring of Bearing
26152022
26152022
1
7651205102
7651205102
1
24212180
24212180
1
/
/
/
0100200004406
0100200004406
1
11
O-Gasket sub-assy of Bearing
12
Evaporator Supper
13
Cold Plasma Generator
14
Evaporator Assy
15
Wall Mounting Frame
01252043
01252043
1
16
Cross Flow Fan
10352059
10352059
1
17
Fan Motor
1501208905
1501208905
1
18
Connecting pipe clamp
2611216401
2611216401
1
19
Rubber Plug (Water Tray)
20
Stepping Motor
21
Crank
22
Electric Box Assy
23
Axile Bush
24
76712012
76712012
1
1521212901
1521212901
1
73012005
73012005
1
10000201638
10000201639
1
10542036
10542036
1
Terminal Board
4201123303
4201123303
1
25
Jumper
4202021911
4202021911
1
26
Main Board
30138000660
30138000659
1
27
Screw Cover
2425203001
2425203001
1
28
Electric Box Cover Sub-Assy
0140206501
0140206501
1
29
Shield Cover of Electric Box Cover
01592150
01592150
1
30
Electric Box Cover
2011220701
2011220701
1
31
Power Cord
/
/
/
32
Connecting Cable
/
/
/
33
Remote Controller
30510475
30510475
1
Above data is subject to change without notice.
Installation and Maintenance
55
Service Manual
Description
NO.
Part Code
Qty
GWC09QB-D3DNB4E/I(LC)
GWH09QB-D3DNB4E/I(LCLH)
Product Code
CB434N01700
CB434N01800
1
Front Panel
20000300026S
20000300026S
1
2
Filter Sub-Assy
11122219
11122219
2
3
Display Board
30565260
30565260
1
4
Front Case Assy
00000200085
00000200085
1
5
Guide Louver
1051276301
1051276301
1
6
Helicoid Tongue
2611250802
2611250802
1
7
Left Axile Bush
10512037
10512037
1
8
Rear Case assy
00000100066
00000100066
1
9
Drainage Hose
0523001408
0523001408
1
10
Ring of Bearing
26152022
26152022
1
7651205102
7651205102
1
24212180
24212180
1
/
/
/
0100200004406
0100200004406
1
11
O-Gasket sub-assy of Bearing
12
Evaporator Supper
13
Cold Plasma Generator
14
Evaporator Assy
15
Wall Mounting Frame
01252043
01252043
1
16
Cross Flow Fan
10352059
10352059
1
17
Fan Motor
1501208905
1501208905
1
18
Connecting pipe clamp
2611216401
2611216401
1
19
Rubber Plug (Water Tray)
20
Stepping Motor
21
Crank
22
Electric Box Assy
23
Axile Bush
24
76712012
76712012
1
1521212901
1521212901
1
73012005
73012005
1
10000202369
10000202370
1
10542036
10542036
1
Terminal Board
4201123303
4201123303
1
25
Jumper
4202021911
4202021911
1
26
Main Board
30138000660
30138000659
1
27
Screw Cover
2425203001
2425203001
1
28
Electric Box Cover Sub-Assy
0140206501
0140206501
1
29
Shield Cover of Electric Box Cover
01592150
01592150
1
30
Electric Box Cover
2011220701
2011220701
1
31
Power Cord
/
/
/
32
Connecting Cable
/
/
/
33
Remote Controller
30510475
30510475
1
Above data is subject to change without notice.
56
Technical Information
Service Manual
Description
NO.
Product Code
Part Code
GWC09QB-D3DNA5E/I(LC)
GWH09QB-D3DNA5E/I(LCLH)
Qty
CB425N04600
CB425N04300
CB425N04301
2002267001
2002267001
2002267001
1
11122219
11122219
11122219
2
30565263
30565270
1
00000200119
2002249501
1
1051272202
1051272202
1
26112508
26112508
1
10512037
10512037
1
00000100066
00000100066
1
0523001408
0523001408
1
26152022
26152022
26152022
1
7651205102
7651205102
7651205102
1
24212180
24212180
24212180
1
/
/
/
/
0100200004406
0100200004406
0100200004406
1
1
Front Panel
2
Filter Sub-Assy
3
Display Board
30565270
4
Front Case Assy
2002249501
5
Guide Louver
1051272202
6
Helicoid Tongue
26112508
7
Left Axile Bush
10512037
8
Rear Case assy
00000100066
9
Drainage Hose
0523001408
10
Ring of Bearing
11
O-Gasket sub-assy of Bearing
12
Evaporator Supper
13
Cold Plasma Generator
14
Evaporator Assy
15
Wall Mounting Frame
01252043
01252043
01252043
1
16
Cross Flow Fan
10352059
10352059
10352059
1
17
Fan Motor
1501208905
1501208905
1501208905
1
18
Connecting pipe clamp
2611216401
2611216401
2611216401
1
19
Rubber Plug (Water Tray)
20
Stepping Motor
21
Crank
22
Electric Box Assy
23
Axile Bush
10542036
24
Terminal Board
4201123303
25
Jumper
4202021903
26
Main Board
27
28
29
Shield Cover of Electric Box Cover
30
Electric Box Cover
31
32
33
76712012
76712012
76712012
1
1521212901
1521212901
1521212901
1
73012005
73012005
73012005
1
10000203048
10000203097
10000203049
1
10542036
10542036
1
4201123303
4201123303
1
4202021903
4202021903
1
30138000660
30138000659
30138000659
1
Screw Cover
2425203001
2425203001
2425203001
1
Electric Box Cover Sub-Assy
0140206501
0140206501
0140206501
1
01592150
01592150
01592150
1
2011220701
2011220701
2011220701
1
Power Cord
/
/
/
/
Connecting Cable
/
/
/
/
Remote Controller
30510475
30510475
30510475
1
Above data is subject to change without notice.
Installation and Maintenance
57
Service Manual
Description
NO.
Part Code
Qty
GWC09QB-D3DNC2E/I(LC)
GWH09QB-D3DNC2E/I(LCLH)
Product Code
CB439N01000
CB439N01100
1
Front Panel
20000300068S
20000300068S
1
2
Filter Sub-Assy
11122219
11122219
2
3
Display Board
30565281
30565281
1
4
Front Case Assy
00000200040
00000200040
1
5
Guide Louver
1051276301
1051276301
1
6
Helicoid Tongue
26112508
26112508
1
7
Left Axile Bush
10512037
10512037
1
8
Rear Case assy
00000100066
00000100066
1
9
Drainage Hose
0523001408
0523001408
1
10
Ring of Bearing
26152022
26152022
1
7651205102
7651205102
1
24212179
24212179
1
/
/
/
0100200004406
0100200004406
1
11
O-Gasket sub-assy of Bearing
12
Evaporator Supper
13
Cold Plasma Generator
14
Evaporator Assy
15
Wall Mounting Frame
01252043
01252043
1
16
Cross Flow Fan
10352059
10352059
1
17
Fan Motor
1501208905
1501208905
1
18
Connecting pipe clamp
2611216401
2611216401
1
19
Rubber Plug (Water Tray)
20
Stepping Motor
21
Crank
22
Electric Box Assy
23
Axile Bush
24
76712012
76712012
1
1521212901
1521212901
1
73012005
73012005
1
10000203234
10000203235
1
10542036
10542036
1
Terminal Board
4201123303
4201123303
1
25
Jumper
4202021911
4202021911
1
26
Main Board
30138000660
30138000659
1
27
Screw Cover
2425203001
2425203001
1
28
Electric Box Cover Sub-Assy
0140206501
0140206501
1
29
Shield Cover of Electric Box Cover
01592150
01592150
1
30
Electric Box Cover
2011220701
2011220701
1
31
Power Cord
/
/
/
32
Connecting Cable
/
/
/
33
Remote Controller
30510475
30510475
1
Above data is subject to change without notice.
58
Installation and Maintenance
Service Manual
Description
NO.
Part Code
Qty
GWC12QC-D3DNA6E/I(LC)
GWH12QC-D3DNA6E/I(LCLH)
Product Code
CB427N01800
CB427N02100
1
Front Panel
2002266101S
2002266101S
1
2
Filter Sub-Assy
11122468
11122468
2
3
Display Board
30565265
30565265
1
4
Front Case Assy
2002273101
2002273101
1
5
Guide Louver
1051293101
1051293101
1
6
Helicoid Tongue
26112507
26112507
1
7
Left Axile Bush
10512037
10512037
1
8
Rear Case assy
22202375
22202375
1
9
Drainage Hose
05230014
05230014
1
10
Ring of Bearing
26152022
26152022
1
7651205102
7651205102
1
24212179
24212179
1
/
/
/
0100297601
0100297601
1
11
O-Gasket sub-assy of Bearing
12
Evaporator Supper
13
Cold Plasma Generator
14
Evaporator Assy
15
Wall Mounting Frame
01252484
01252484
1
16
Cross Flow Fan
10352056
10352056
1
17
Fan Motor
1501214601
1501214601
1
18
Connecting pipe clamp
2611216401
2611216401
1
19
Rubber Plug (Water Tray)
20
Stepping Motor
21
Crank
22
Electric Box Assy
23
Axile Bush
24
76712012
76712012
1
1521210701
1521210701
1
73012005
73012005
1
10000201640
10000201641
1
10542036
10542036
1
Terminal Board
4201123303
4201123303
1
25
Jumper
4202021917
4202021917
1
26
Main Board
30138000655
30138000656
1
27
Screw Cover
2425203001
2425203001
1
28
Electric Box Cover Sub-Assy
0140206501
0140206501
1
29
Shield Cover of Electric Box Cover
01592150
01592150
1
30
Electric Box Cover
2011220701
2011220701
1
31
Power Cord
/
/
/
32
Connecting Cable
/
/
/
33
Remote Controller
30510475
30510475
1
Above data is subject to change without notice.
Installation and Maintenance
59
Service Manual
Description
NO.
Part Code
Qty
GWC12QC-D3DNB4E/I(LC)
GWH12QC-D3DNB4E/I(LCLH)
Product Code
CB434N01600
CB434N01300
1
Front Panel
20000300027T
20000300027S
1
2
Filter Sub-Assy
11122468
11122468
2
3
Display Board
30565260
30565260
1
4
Front Case Assy
00000200045
00000200045
1
5
Guide Louver
1051293101
1051293101
1
6
Helicoid Tongue
26112507
26112507
1
7
Left Axile Bush
10512037
10512037
1
8
Rear Case assy
22202375
22202375
1
9
Drainage Hose
05230014
05230014
1
10
Ring of Bearing
26152022
26152022
1
7651205102
7651205102
1
24212179
24212179
1
/
/
/
0100297601
0100297601
1
11
O-Gasket sub-assy of Bearing
12
Evaporator Supper
13
Cold Plasma Generator
14
Evaporator Assy
15
Wall Mounting Frame
01252484
01252484
1
16
Cross Flow Fan
10352056
10352056
1
17
Fan Motor
1501214601
1501214601
1
18
Connecting pipe clamp
2611216401
2611216401
1
19
Rubber Plug (Water Tray)
20
Stepping Motor
21
Crank
22
Electric Box Assy
23
Axile Bush
24
76712012
76712012
1
1521210701
1521210701
1
73012005
73012005
1
10000202356
10000202315
1
10542036
10542036
1
Terminal Board
4201123303
4201123303
1
25
Jumper
4202021917
4202021917
1
26
Main Board
30138000655
30138000656
1
27
Screw Cover
2425203001
2425203001
1
28
Electric Box Cover Sub-Assy
0140206501
0140206501
1
29
Shield Cover of Electric Box Cover
01592150
01592150
1
30
Electric Box Cover
2011220701
2011220701
1
31
Power Cord
/
/
/
32
Connecting Cable
/
/
/
33
Remote Controller
30510475
30510475
1
Above data is subject to change without notice.
60
Installation and Maintenance
Service Manual
Description
NO.
Part Code
Qty
GWC12QC-D3DNC2E/I(LC)
GWH12QC-D3DNC2E/I(LCLH)
Product Code
CB439N00800
CB439N00900
1
Front Panel
20000300069S
20000300069S
1
2
Filter Sub-Assy
11122468
11122468
2
3
Display Board
30565281
30565281
1
4
Front Case Assy
00000200045
00000200045
1
5
Guide Louver
1051293101
1051293101
1
6
Helicoid Tongue
26112436
26112436
1
7
Left Axile Bush
10512037
10512037
1
8
Rear Case assy
00000100093
00000100093
1
9
Drainage Hose
05230014
05230014
1
10
Ring of Bearing
26152022
26152022
1
7651205102
7651205102
1
24212179
24212179
1
/
/
/
0100297601
0100297601
1
11
O-Gasket sub-assy of Bearing
12
Evaporator Supper
13
Cold Plasma Generator
14
Evaporator Assy
15
Wall Mounting Frame
01252484
01252484
1
16
Cross Flow Fan
10352056
10352056
1
17
Fan Motor
1501214604
1501214604
1
18
Connecting pipe clamp
2611216401
2611216401
1
19
Rubber Plug (Water Tray)
20
Stepping Motor
21
Crank
22
Electric Box Assy
23
Axile Bush
24
76712012
76712012
1
1521210701
1521210701
1
73012005
73012005
1
10000203187
10000203188
1
10542036
10542036
1
Terminal Board
4201123303
4201123303
1
25
Jumper
4202021917
4202021917
1
26
Main Board
30138000655
30138000656
1
27
Screw Cover
2425203001
2425203001
1
28
Electric Box Cover Sub-Assy
0140206501
0140206501
1
29
Shield Cover of Electric Box Cover
01592150
01592150
1
30
Electric Box Cover
2011220701
2011220701
1
31
Power Cord
/
/
/
32
Connecting Cable
/
/
/
33
Remote Controller
30510475
30510475
1
Above data is subject to change without notice.
Installation and Maintenance
61
Service Manual
Description
NO.
Part Code
Qty
GWC12QC-D3DNB2E/I(LC)
GWH12QC-D3DNB2E/I(LCLH)
Product Code
CB432N02500
CB432N02600
1
Front Panel
20000300018S
20000300018S
1
2
Filter Sub-Assy
11122468
11122468
2
3
Display Board
30565260
30565260
1
4
Front Case Assy
00000200045
00000200045
1
5
Guide Louver
1051293101
1051293101
1
6
Helicoid Tongue
26112436
26112436
1
7
Left Axile Bush
10512037
10512037
1
8
Rear Case assy
00000100093
00000100093
1
9
Drainage Hose
05230014
05230014
1
10
Ring of Bearing
26152022
26152022
1
7651205102
7651205102
1
24212179
24212179
1
/
/
/
0100297601
0100297601
1
11
O-Gasket sub-assy of Bearing
12
Evaporator Supper
13
Cold Plasma Generator
14
Evaporator Assy
15
Wall Mounting Frame
01252484
01252484
1
16
Cross Flow Fan
10352056
10352056
1
17
Fan Motor
1501214604
1501214604
1
18
Connecting pipe clamp
2611216401
2611216401
1
19
Rubber Plug (Water Tray)
20
Stepping Motor
21
Crank
22
Electric Box Assy
23
Axile Bush
24
76712012
76712012
1
1521210701
1521210701
1
73012005
73012005
1
10000202356
10000202315
1
10542036
10542036
1
Terminal Board
4201123303
4201123303
1
25
Jumper
4202021917
4202021917
1
26
Main Board
30138000655
30138000656
1
27
Screw Cover
2425203001
2425203001
1
28
Electric Box Cover Sub-Assy
0140206501
0140206501
1
29
Shield Cover of Electric Box Cover
01592150
01592150
1
30
Electric Box Cover
2011220701
2011220701
1
31
Power Cord
/
/
/
32
Connecting Cable
/
/
/
33
Remote Controller
30510475
30510475
1
Above data is subject to change without notice.
62
Installation and Maintenance
Service Manual
Description
NO.
Part Code
GWC12QC-D3DNA5E/I(LC)
GWH12QC-D3DNA5E/I(LCLH)
Qty
Product Code
CB425N04400
CB425N04500
CB425N04501
1
Front Panel
2002269402S
2002269402S
2002269402S
1
2
Filter Sub-Assy
11122468
11122468
11122468
2
3
Display Board
30565276
30565276
30565263
1
4
Front Case Assy
00000200022
00000200022
00000200109
1
5
Guide Louver
1051249202
1051249202
1051249202
1
6
Helicoid Tongue
26112436
26112436
26112436
1
7
Left Axile Bush
10512037
10512037
10512037
1
8
Rear Case assy
00000100093
00000100093
00000100093
1
9
Drainage Hose
05230014
05230014
05230014
1
10
Ring of Bearing
26152022
26152022
26152022
1
7651205102
7651205102
7651205102
1
24212179
24212179
24212179
1
/
/
/
/
0100297601
0100297601
0100297601
1
11
O-Gasket sub-assy of Bearing
12
Evaporator Supper
13
Cold Plasma Generator
14
Evaporator Assy
15
Wall Mounting Frame
01252484
01252484
01252484
1
16
Cross Flow Fan
10352056
10352056
10352056
1
17
Fan Motor
1501214604
1501214604
1501214604
1
18
Connecting pipe clamp
2611216401
2611216401
2611216401
1
19
Rubber Plug (Water Tray)
20
Stepping Motor
21
Crank
22
Electric Box Assy
23
Axile Bush
10542036
24
Terminal Board
4201123303
25
Jumper
4202021906
26
Main Board
27
28
29
Shield Cover of Electric Box Cover
30
Electric Box Cover
31
32
33
76712012
76712012
76712012
1
1521210701
1521210701
1521210701
1
73012005
73012005
73012005
1
10000203056
10000203057
10000203014
1
10542036
10542036
1
4201123303
4201123303
1
4202021906
4202021906
1
30138000655
30138000656
30138000656
1
Screw Cover
2425203001
2425203001
2425203001
1
Electric Box Cover Sub-Assy
0140206501
0140206501
0140206501
1
01592150
01592150
01592150
1
2011220701
2011220701
2011220701
1
Power Cord
/
/
/
/
Connecting Cable
/
/
/
/
Remote Controller
30510475
30510475
30510475
1
Above data is subject to change without notice.
Installation and Maintenance
63
Service Manual
Description
NO.
Part Code
Qty
GWC09QB-D3DNB2E/I(LC)
GWH09QB-D3DNB2E/I(LCLH)
Product Code
CB432N04000
CB432N03301
1
Front Panel
20000300019S
20000300019S
1
2
Filter Sub-Assy
11122219
11122219
2
3
Display Board
30565260
30565260
1
4
Front Case Assy
00000200040
00000200040
1
5
Guide Louver
1051276301
1051276301
1
6
Helicoid Tongue
26112508
26112508
1
7
Left Axile Bush
10512037
10512037
1
8
Rear Case assy
00000100066
00000100066
1
9
Drainage Hose
0523001408
0523001408
1
10
Ring of Bearing
26152022
26152022
1
7651205102
7651205102
1
24212180
24212180
1
/
/
/
0100200004406
0100200004406
1
11
O-Gasket sub-assy of Bearing
12
Evaporator Supper
13
Cold Plasma Generator
14
Evaporator Assy
15
Wall Mounting Frame
01252043
01252043
1
16
Cross Flow Fan
10352059
10352059
1
17
Fan Motor
1501208905
1501208905
1
18
Connecting pipe clamp
2611216401
2611216401
1
19
Rubber Plug (Water Tray)
20
Stepping Motor
21
Crank
22
Electric Box Assy
23
Axile Bush
24
76712012
76712012
1
1521212901
1521212901
1
73012005
73012005
1
10000202369
10000202370
1
10542036
10542036
1
Terminal Board
4201123303
4201123303
1
25
Jumper
4202021911
4202021911
1
26
Main Board
30138000660
30138000659
1
27
Screw Cover
2425203001
2425203001
1
28
Electric Box Cover Sub-Assy
0140206501
0140206501
1
29
Shield Cover of Electric Box Cover
01592150
01592150
1
30
Electric Box Cover
2011220701
2011220701
1
31
Power Cord
/
/
/
32
Connecting Cable
/
/
/
33
Remote Controller
30510475
30510475
1
Above data is subject to change without notice.
64
Installation and Maintenance
Service Manual
Description
NO.
Part Code
Qty
GWC12QC-D3DNB8E/I(LC)
GWH12QC-D3DNB8E/I(LCLH)
Product Code
CB438N01600
CB438N01400
1
Front Panel
20000300074T
20000300074T
1
2
Filter Sub-Assy
11122468
11122468
2
3
Display Board
30565260
30565260
1
4
Front Case Assy
00000200045
00000200045
1
5
Guide Louver
1051293101
1051293101
1
6
Helicoid Tongue
26112436
26112436
1
7
Left Axile Bush
10512037
10512037
1
8
Rear Case assy
00000100093
00000100093
1
9
Drainage Hose
05230014
05230014
1
10
Ring of Bearing
26152022
26152022
1
7651205102
7651205102
1
24212180
24212180
1
/
/
/
0100297601
0100297601
1
11
O-Gasket sub-assy of Bearing
12
Evaporator Supper
13
Cold Plasma Generator
14
Evaporator Assy
15
Wall Mounting Frame
01252484
01252484
1
16
Cross Flow Fan
10352056
10352056
1
17
Fan Motor
1501214604
1501214604
1
18
Connecting pipe clamp
2611216401
2611216401
1
19
Rubber Plug (Water Tray)
20
Stepping Motor
21
Crank
22
Electric Box Assy
23
Axile Bush
24
76712012
76712012
1
1521210701
1521210701
1
73012005
73012005
1
10000203348
10000202315
1
10542036
10542036
1
Terminal Board
4201123303
4201123303
1
25
Jumper
4202021917
4202021917
1
26
Main Board
30138000655
30138000656
1
27
Screw Cover
2425203001
2425203001
1
28
Electric Box Cover Sub-Assy
0140206501
0140206501
1
29
Shield Cover of Electric Box Cover
01592150
01592150
1
30
Electric Box Cover
2011220701
2011220701
1
31
Power Cord
/
/
/
32
Connecting Cable
/
/
/
33
Remote Controller
30510475
30510475
1
Above data is subject to change without notice.
Installation and Maintenance
65
Service Manual
Description
NO.
Product Code
Part Code
Qty
GWC09QB-D3DNA1E/I(LC)
GWC12QC-D3DNA1E/I(LC)
CB419N07300
CB419N07100
20022479S
20022475S
1
1
Front Panel
2
Filter Sub-Assy
11122219
11122468
2
3
Display Board
30565231
30565231
1
4
Front Case Assy
20022495
20022489
1
5
Guide Louver
10512722
10512492
1
6
Helicoid Tongue
26112508
26112436
1
7
Left Axile Bush
10512037
10512037
1
8
Rear Case assy
00000100066
00000100093
1
9
Drainage Hose
0523001408
05230014
1
10
Ring of Bearing
26152022
26152022
1
7651205102
7651205102
1
24212180
24212179
1
/
/
/
0100200004406
0100297601
1
11
O-Gasket sub-assy of Bearing
12
Evaporator Supper
13
Cold Plasma Generator
14
Evaporator Assy
15
Wall Mounting Frame
01252043
01252484
1
16
Cross Flow Fan
10352059
10352056
1
17
Fan Motor
1501208905
1501214604
1
18
Connecting pipe clamp
2611216401
2611216401
1
19
Rubber Plug (Water Tray)
20
Stepping Motor
21
Crank
22
Electric Box Assy
23
Axile Bush
24
76712012
76712012
1
1521212901
1521210701
1
73012005
73012005
1
10000203542
10000203548
1
10542036
10542036
1
Terminal Board
4201123303
4201123303
1
25
Jumper
4202021903
4202021906
1
26
Main Board
30138000660
30138000655
1
27
Screw Cover
24252030
24252030
1
28
Electric Box Cover Sub-Assy
0140206501
0140206501
1
29
Shield Cover of Electric Box Cover
01592150
01592150
1
30
Electric Box Cover
2011220701
2011220701
1
31
Power Cord
/
/
/
32
Connecting Cable
/
/
/
33
Remote Controller
30510475
30510475
1
Above data is subject to change without notice.
66
Installation and Maintenance
Service Manual
10.2 Outdoor Unit
Cooling only models
Installation and Maintenance
67
Service Manual
Description
NO.
Product Code
1
Front Grill
2
Front Panel Assy
3
Axial Flow Fan
4
Fan Motor
5
Chassis Sub-assy
6
Part Code
GWC09QB-D3DNA6E/O(LC)
CB427W01900
GWC12QC-D3DNA6E/O(LC)
CB427W01800
Qty
01473012
01473012
1
0153304804
0153304804
1
10333004
10333004
1
1501306723
1501306723
1
0170000009501P
02803187P
1
Compressor Gasket
76713027
76713027
3
7
Compressor and fittings
00103892
00103892
1
8
Valve Support
0171314201P
0171314201P
1
9
Cut off Valve Assy
07133474
07133474
1
10
Valve Support Block
26113017
26113017
2
11
Valve
07100003
07133082
1
12
Cable Cross Plate 2
02123014P
02123014P
1
13
Right Side Plate Assy
013030713
013030713
1
14
Cover of pass wire
01413069
01413069
1
15
Inhalation Tube Sub-assy
03001000262
03001000262
1
16
Discharge Tube
03500800572
03500800570
1
17
Temperature Sensor
3900030805
3900030805
1
18
Capillary Sub-assy
03000600338
03000600339
1
19
Rear Grill
01473009
01473009
1
20
Condenser Assy
01100200359
01100200360
1
21
Clapboard Sub-Assy
0123338502
0123338502
1
22
Top Cover Sub-Assy
01253073
01253073
1
23
Motor Support
24
Electric Box Assy
25
Reactor
26
01703104
0170310401
1
10000100289
10000100290
1
43130184
43130184
1
Electric Box Cover Sub-Assy
10000500128
10000500129
1
27
Main Board
30138000678
30138000680
1
28
Terminal Board
42010313
42010313
1
29
Wire Clamp
71010003
71010003
1
Above data is subject to change without notice.
68
Installation and Maintenance
Service Manual
Cooling and heating models
Installation and Maintenance
69
Service Manual
Description
NO.
Product Code
1
Front Grill
2
Front Panel Assy
3
Axial Flow Fan
4
Chassis Sub-assy
5
Part Code
GWH09QC-A3DNA1D/O
CB419W03900
GWH12QC-D3DNA6E/O(LCLH)
CB427W02100
Qty
01473012
01473012
1
0153304804
0153304804
1
10333004
10333004
1
01700000095P
01700000081P
1
Clapboard Sub-Assy
0123338502
0123338502
1
6
Drainage Connecter
06123401
06123401
1
7
Compressor Gasket
76713027
76713027
3
8
4-Way Valve Assy
03073369
03073277
1
9
Valve Support
0171314201P
0171314201P
1
10
Cut off Valve Assy
07133474
07133474
1
11
Valve
07100003
07133082
1
12
Valve Support Block
26113017
26113017
2
13
Cover of Pass Wire
01413069
01413069
1
14
Right Side Plate Assy
013030713
013030713
1
15
Cable Cross Plate 2
02123014P
02123014P
1
16
Magnet Coil
4300040050
4300040050
1
17
Capillary Sub-assy
03000600331
03000600327
1
18
Rear Grill
01473009
01473009
1
19
Electric Box
20113033
20113033
1
20
Main Board
30138000679
30138000677
1
21
Reactor
43130184
43130184
1
22
Electric Box Assy
10000100292
10000100291
1
23
Terminal Board
42010313
42010313
1
24
Wire Clamp
71010003
71010003
1
25
Top Cover Sub-Assy
01253073
01253073
1
26
Condenser Assy
01100200349
01100200346
1
27
Motor Support
01703104
0170310401
1
28
Fan Motor
1501306723
1501306723
1
29
Compressor Overload Protector(External)
00183111
00183111
1
30
Compressor and Fittings
00103892
00103892
1
31
Small Handle
26233100
26233100
1
32
Temperature Sensor
3900030805
3900030805
1
Above data is subject to change without notice.
70
Installation and Maintenance
Service Manual
11. Removal Procedure
Warning: Be sure to wait for a minimum of 20 minutes
after turning off all power supplies and discharge the
refrigerant completely before removal.
11.1 Removal Procedure of Indoor Unit
NOTE: Take A6 panel for an example.
Step
Procedure
1. Remove filter assembly
Front panel
Open the front panel. Push the left filter
and right filter until they are separate from
the groove on the front panel.
Remove the left filter and right filter
respectively.
Front
case
Left filter
Right filter
Groove
2. Remove horizontal louver
Push out the axile bush on horizontal
louver. Bend the horizontal louver with
hand and then separate the horizontal
louver from the crankshaft of step motor
to remove it.
Location of step motor
Horizontal louver
Axile bush
3. Remove panel
a
b
(1)A1/A5/C2 panel display: Screw off
the 2 screws that are locking the display
board. Separate the display board from
the front panel.
(2)A5/A6 panel display: Screw off the 2
screws that are locking the display board.
Note:This display can be disassembled
only after removing the front case (refer to
step 5 of disassembly).
(3)B2/B4/B8 panel display: Screw off
the 2 screws that are locking the display
board.
A1/A5/C2 display
A5/A6 display
Screws
Panel
Front panel
B2/B4/B8 display
Separate the panel rotation shaft from
the groove fixing the front panel and then
removes the front panel.
Panel rotation
Groove
Installation and Maintenance
71
Service Manual
Step
Procedure
4. Remove electric box cover
Screw
Electric box cover
Remove the screws on the electric box
cover to remove the electric box cover.
5. Remove front case sub-assy
a
Screws
Remove the screws fixing front case.
Note:
1.Open the screw caps before removing
the screws around the air outlet.
2.The quantity of screws fixing the front
case sub-assy is different for different
models.
Front case
sub-assy
Screw caps
Screw
Clasp
b
Loosen the connection clasps between
front case sub-assy and bottom case. Lift
up the front case sub-assy and take it out.
Front case
sub-assy
6. Remove vertical louver
Loosen the connection clasps between
vertical louver and bottom case to remove
vertical louver.
Bottom
case
Vertical
louver
Clasps
72
Vertical
louver
Installation and Maintenance
Service Manual
Step
Procedure
7. Remove electric box assy
a
Screw
Loosen the connection clasps between
shield cover of electric box sub-assy and
electric box, and then remove the shield
cover of electric box sub-assy.
Remove the screw fixing electric box assy .
Clasps
Electric box
Shield cover of electric
box sub-assy
b
① Take off the water retaining sheet.
Remove the cold plasma generator by
screwing off the locking screw on the
generator.
② Take off the indoor tube temperature
sensor.
③ Screw off 1 grounding screw.
④ Remove the wiring terminals of motor and
stepping motor.
⑤ Remove the electric box assy.
Grounding screw
Indoor tube
temperature
Electric box assy
sensor
Cold plasma
generator
Wiring
terminal
of motor
Screw
Wiring
terminal
of stepping
motor
Water retaining
sheet
Screw
c
Main board
Twist off the screws that are locking
each lead wire and rotate the electric
box assy.
Twist off the screws that are locking the
wire clip. Loosen the power cord and
remove its wiring terminal. Lift up the
main board and take it off.
Power cord
Screw
Wire clip
Installation and Maintenance
73
Service Manual
Step
Procedure
Instruction: Some wiring terminal of this
product is with lock catch and other devices.
circlip
The pulling method is as below:
holder
1.Remove the soft sheath for some terminals
at first, hold the circlip and then pull out the
terminals.
2.Pull out the holder for some terminals at
connector
soft sheath
first (holder is not available for some wiring
terminal), hold the connector and then pull the
terminal.
8. Remove evaporator assy
a
Remove 3 screws fixing evaporator assy.
b
At the back of the unit, remove the
screw fixing connection pipe clamp and
then remove the connection pipe clamp.
Screws
Connection pipe clamp
Screw
Groove
c
Evaporator assy
Bottom case
First remove the left side of the evaporator
from the groove of bottom case and then
remove the right side from the clasp on
the bottom case.
Clasp
Evaporator assy
Connection pipe
d
74
Adjust the position of connection pipe
on evaporator slightly and then lift the
evaporator upwards to remove it.
Installation and Maintenance
Service Manual
Step
Procedure
9. Remove motor and cross flow blade
a
Remove the screws fixing motor clamp
and then remove the motor clamp.
Screws
Motor clamp
b
Remove the screws at the connection
place of cross flow blade and motor; lift
the motor and cross flow blade upwards
to remove them.
Remove the bearing holder sub-assy.
Remove the screw fixing step motor and
then remove the step motor.
Cross flow
Holder
sub-assy
Screw
Motor
Screws
Step motor
Installation and Maintenance
75
Service Manual
11.2 Removal Procedure of Outdoor Unit
Warning: Be sure to wait for a minimum of 20 minutes
after turning off all power supplies and discharge the
refrigerant completely before removal.
NOTE: Take heat pump for example.
Steps
Procedure
1.Remove big handle
Before disassamble.
Small Handle
screw
Remove 3 connection screw fixing small
handle and then remove the big handle.
Remove 1 connection screw fixing valve cover
and then remove the valve cover.
Valve Cover
2. Remove top cover
top cover plate
screw
Remove 3 connection screws among
top cover plate, front panel and right
side plate. Then remove top cover
plate.
76
Installation and Maintenance
Service Manual
3.Remove grille and front panel
Remove connection screws between the front grille
and the front panel. Then remove the front grille.
Remove connection screws connecting the front
panel with the chassis and the motor support, and
then remove the front panel.
Grille
Panel
4.Remove axial flow blade
Axial flow blade
Remove the nut fixing the blade and then
remove the axial flow blade.
5.Remove right side plate
Remove connection screws connecting the right
side plate with the valve support and the electric
box. Then remove the right side plate.
Installation and Maintenance
Right side plate
77
Service Manual
6.Remove electric box assy
Electric box assy
Remove the 2 screws fixing the cover of electric box. Lift to remove the cover. Loosen the
wire and disconnect the terminal. Lift to remove the electric box assy.
7.Remove 4-way valve assy
Unscrew the fastening nut of the 4-way Valve
Assy coil and remove the coil. Wrap the 4-
4-way Valve Assy
way Valve Assy with wet cotton and unsolder
the 4 weld spots connecting the 4-way Valve
Assy to take it out.(Note: Refrigerant should
be discharged firstly.) Welding process
should be as quickly as possible and keep
wrapping cotton wet all the time. Be sure not
to burn out the lead-out wire of compressor.
8.Remove capillary sub-assy
Unsolder weld point of capillary Sub-assy,
Capillary Sub-assy
valve and outlet pipe of condensator. Then
remove the capillary Sub-assy. Do not block
the capillary when unsoldering it. (Note: before unsoldering,discharge refrigerants
completely)
78
Installation and Maintenance
Service Manual
9.Remove motor and motor support
Motor support
Remove the 4 tapping screws fixing the motor.
Pull out the lead-out wire and remove the
motor. Remove the 2 tapping screws fixing
Motor
the motor support. Lift motor support to remove it.
10.Remove clapboard sub-assy
Clapboard Sub-Assy
Loosen the screws of the Clapboard Sub-Assy .
The Clapboard Sub-Assy has a hook on the
lower side. Lift and pull the Clapboard Sub-Assy
to remove.
Installation and Maintenance
79
Service Manual
11.Remove Compressor
1
Remove the 2 screws fixing the gas valve.
Unsolder the welding spot connecting gas valve
and air return pipe and remove the gas valve.
(Note: it is necessary to warp the gas valve when
unsoldering the welding spot.) Remove the 2
screws fixing liquid valve. Unsolder the weld-
Liquid valve
ing spot connecting liquid valve and remove the
liquid valve.
Gas valve
2
Remove the 3 footing screws of the compressor
and remove the compressor.
80
Compressor
Installation and Maintenance
Service Manual
Appendix:
Appendix 1: Reference Sheet of Celsius and Fahrenheit
Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32
Set temperature
Fahrenheit
display
Fahrenheit
Celsius(℃)
temperature
(℉)
(℉)
61
60.8
16
62/63
62.6
17
64/65
64.4
18
66/67
66.2
19
68
68
20
Fahrenheit
display
Fahrenheit
Celsius(℃)
temperature
(℉)
(℉)
69/70
69.8
21
71/72
71.6
22
73/74
73.4
23
75/76
75.2
24
77
77
25
Fahrenheit
display
temperature
(℉)
78/79
80/81
82/83
84/85
86
Fahrenheit
display
Fahrenheit
Celsius(℃)
temperature (℉)
(℉)
55/56
55.4
13
57/58
57.2
14
59/60
59
15
61/62
60.8
16
63
62.6
17
64/65
64.4
18
66/67
66.2
19
68/69
68
20
70/71
69.8
21
72
71.6
22
73/74
73.4
23
75/76
75.2
24
77/78
77
25
Fahrenheit
display
Fahrenheit
Celsius(℃)
temperature
(℉)
(℉)
79/80
78.8
26
81
80.6
27
82/83
82.4
28
84/85
84.2
29
86/87
86
30
88/89
87.8
31
90
89.6
32
91/92
91.4
33
93/94
93.2
34
95/96
95
35
97/98
96.8
36
99
98.6
37
Fahrenheit
Celsius(℃)
(℉)
78.8
80.6
82.4
84.2
86
26
27
28
29
30
Ambient temperature
Fahrenheit
display
Fahrenheit
Celsius(℃)
temperature
(℉)
(℉)
32/33
32
0
34/35
33.8
1
36
35.6
2
37/38
37.4
3
39/40
39.2
4
41/42
41
5
43/44
42.8
6
45
44.6
7
46/47
46.4
8
48/49
48.2
9
50/51
50
10
52/53
51.8
11
54
53.6
12
Appendix 2: Configuration of Connection Pipe
1.Standard length of connection pipe
● 16.40ft, 24.61ft, 26.25ft.
2.Min. length of connection pipe is 9.84ft.
3.Max. length of connection pipe and max. high difference.
4.The additional refrigerant oil and refrigerant charging required after
prolonging connection pipe
● After the length of connection pipe is prolonged for 32.81ft at the
basis of standard length, you should add 0.0013gal of refrigerant oil
for each additional 16.40ft of connection pipe.
● The calculation method of additional refrigerant charging amount (on
the basis of liquid pipe):
Max length of
connection pipe
5000 Btu/h(1465 W)
49.21ft
7000 Btu/h(2051 W)
49.21ft
9000 Btu/h(2637 W)
49.21ft
12000 Btu/h(3516 W)
65.62ft
18000 Btu/h(5274 W)
82.02ft
24000 Btu/h(7032 W)
82.02ft
28000 Btu/h(8204 W)
98.43ft
36000 Btu/h(10548 W)
98.43ft
42000 Btu/h(12306 W)
98.43ft
48000 Btu/h(14064 W)
98.43ft
Cooling capacity
Max height
difference
16.40ft
16.40ft
32.81ft
32.81ft
32.81ft
32.81ft
32.81ft
65.62ft
65.62ft
65.62ft
● When the length of connection pipe is above 16.40ft, add refrigerant according to the prolonged length of liquid pipe. The
additional refrigerant charging amount per meter is different according to the diameter of liquid pipe. See the following sheet.
● Additional refrigerant charging amount = prolonged length of liquid pipe X additional refrigerant charging amount per meter
Additional refrigerant charging amount for R22, R407C, R410A and R134a
Diameter of connection pipe
Outdoor unit throttle
Liquid pipe(inch)
Gas pipe(inch) Cooling only(oz/ft.) Cooling and heating(oz/ft.)
Ф0.24
Ф0.37 or Ф0.47
0.2
0.2
Ф0.24 or Ф0.37
Ф0.63 or Ф0.75
0.2
0.2
Ф0.47
Ф0.75 or Ф0.87
0.3
1.3
Ф0.63
Ф1 or Ф1.25
0.7
1.3
Ф0.75
/
2.7
2.7
Ф0.87
/
3.8
3.8
Installation and Maintenance
81
Service Manual
Appendix 3: Pipe Expanding Method
Pipe
Note:
Pipe cutter
Improper pipe expanding is the main cause of refrigerant leakage.Please
expand the pipe according to the following steps:
Leaning
A:Cut the pip
● Confirm the pipe length according to the distance of indoor unit and outdoor unit.
● Cut the required pipe with pipe cutter.
B:Remove the burrs
● Remove the burrs with shaper and prevent the burrs from getting into the pipe.
Uneven
Burr
Pipe
Shaper
Downwards
C:Put on suitable insulating pipe
Union pipe
D:Put on the union nut
● Remove the union nut on the indoor connection pipe and outdoor valve; install
Pipe
the union nut on the pipe.
E:Expand the port
● Expand the port with expander.
Note:
Expander
Hard
mold
● "A" is different according to the diameter, please refer to the sheet below:
Outer
diameter(inch)
Ф0.24 - 0.25 (1/4")
Ф0.37 (3/8")
Ф0.47 - 0.50 (1/2")
Ф0.63 - 0.625 (5/8")
Max
0.05
0.06
0.07
0.09
A(inch)
Pipe
Min
0.03
0.04
0.04
0.09
F:Inspection
● Check the quality of expanding port. If there is any blemish, expand the
port again according to the steps above.
Smooth surface
Improper expanding
leaning
The length is equal
82
damaged
surface
crack
uneven
thickness
Installation and Maintenance
Service Manual
Appendix 4: List of Resistance for Temperature Sensor
Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor(15K)
Temp.(oF)
-2.2
-0.4
1.4
3.2
5
6.8
8.6
10.4
12.2
14
15.8
17.6
19.4
21.2
23
24.8
26.6
28.4
30.2
32
33.8
35.6
37.4
39.2
41
42.8
44.6
46.4
48.2
50
51.8
53.6
55.4
57.2
59
60.8
62.6
64.4
66.2
Resistance(kΩ)
138.1
128.6
121.6
115
108.7
102.9
97.4
92.22
87.35
82.75
78.43
74.35
70.5
66.88
63.46
60.23
57.18
54.31
51.59
49.02
46.6
44.31
42.14
40.09
38.15
36.32
34.58
32.94
31.38
29.9
28.51
27.18
25.92
24.73
23.6
22.53
21.51
20.54
19.63
Installation and Maintenance
Temp.(oF)
68
69.8
71.6
73.4
75.2
77
78.8
80.6
82.4
84.2
86
87.8
89.6
91.4
93.2
95
96.8
98.6
100.4
102.2
104
105.8
107.6
109.4
111.2
113
114.8
116.6
118.4
120.2
122
123.8
125.6
127.4
129.2
131
132.8
134.6
136.4
Resistance(kΩ)
18.75
17.93
17.14
16.39
15.68
15
14.36
13.74
13.16
12.6
12.07
11.57
11.09
10.63
10.2
9.779
9.382
9.003
8.642
8.297
7.967
7.653
7.352
7.065
6.791
6.529
6.278
6.038
5.809
5.589
5.379
5.197
4.986
4.802
4.625
4.456
4.294
4.139
3.99
Temp.(oF)
138.2
140
141.8
143.6
145.4
147.2
149
150.8
152.6
154.4
156.2
158
159.8
161.6
163.4
165.2
167
168.8
170.6
172.4
174.2
176
177.8
179.6
181.4
183.2
185
186.8
188.6
190.4
192.2
194
195.8
197.6
199.4
201.2
203
204.8
206.6
Resistance(kΩ)
3.848
3.711
3.579
3.454
3.333
3.217
3.105
2.998
2.896
2.797
2.702
2.611
2.523
2.439
2.358
2.28
2.206
2.133
2.064
1.997
1.933
1.871
1.811
1.754
1.699
1.645
1.594
1.544
1.497
1.451
1.408
1.363
1.322
1.282
1.244
1.207
1.171
1.136
1.103
Temp.(oF)
208.4
210.2
212
213.8
215.6
217.4
219.2
221
222.8
224.6
226.4
228.2
230
231.8
233.6
235.4
237.2
239
240.8
242.6
244.4
246.2
248
249.8
251.6
253.4
255.2
257
258.8
260.6
262.4
264.2
266
267.8
269.6
271.4
273.2
275
276.8
Resistance(kΩ)
1.071
1.039
1.009
0.98
0.952
0.925
0.898
0.873
0.848
0.825
0.802
0.779
0.758
0.737
0.717
0.697
0.678
0.66
0.642
0.625
0.608
0.592
0.577
0.561
0.547
0.532
0.519
0.505
0.492
0.48
0.467
0.456
0.444
0.433
0.422
0.412
0.401
0.391
0.382
83
Service Manual
Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K)
84
Temp.(oF)
Resistance(kΩ)
Temp.(oF)
Resistance(kΩ)
Temp.(oF)
Resistance(kΩ)
Temp.(oF)
Resistance(kΩ)
-2.2
-0.4
1.4
3.2
5
6.8
8.6
10.4
12.2
14
15.8
17.6
19.4
21.2
23
24.8
26.6
28.4
30.2
32
33.8
35.6
37.4
39.2
41
42.8
44.6
46.4
48.2
50
51.8
53.6
55.4
57.2
59
60.8
62.6
64.4
66.2
181.4
171.4
162.1
153.3
145
137.2
129.9
123
116.5
110.3
104.6
99.13
94
89.17
84.61
80.31
76.24
72.41
68.79
65.37
62.13
59.08
56.19
53.46
50.87
48.42
46.11
43.92
41.84
39.87
38.01
36.24
34.57
32.98
31.47
30.04
28.68
27.39
26.17
68
69.8
71.6
73.4
75.2
77
78.8
80.6
82.4
84.2
86
87.8
89.6
91.4
93.2
95
96.8
98.6
100.4
102.2
104
105.8
107.6
109.4
111.2
113
114.8
116.6
118.4
120.2
122
123.8
125.6
127.4
129.2
131
132.8
134.6
136.4
25.01
23.9
22.85
21.85
20.9
20
19.14
18.13
17.55
16.8
16.1
15.43
14.79
14.18
13.59
13.04
12.51
12
11.52
11.06
10.62
10.2
9.803
9.42
9.054
8.705
8.37
8.051
7.745
7.453
7.173
6.905
6.648
6.403
6.167
5.942
5.726
5.519
5.32
138.2
140
141.8
143.6
145.4
147.2
149
150.8
152.6
154.4
156.2
158
159.8
161.6
163.4
165.2
167
168.8
170.6
172.4
174.2
176
177.8
179.6
181.4
183.2
185
186.8
188.6
190.4
192.2
194
195.8
197.6
199.4
201.2
203
204.8
206.6
5.13
4.948
4.773
4.605
4.443
4.289
4.14
3.998
3.861
3.729
3.603
3.481
3.364
3.252
3.144
3.04
2.94
2.844
2.752
2.663
2.577
2.495
2.415
2.339
2.265
2.194
2.125
2.059
1.996
1.934
1.875
1.818
1.736
1.71
1.658
1.609
1.561
1.515
1.47
208.4
210.2
212
213.8
215.6
217.4
219.2
221
222.8
224.6
226.4
228.2
230
231.8
233.6
235.4
237.2
239
240.8
242.6
244.4
246.2
248
249.8
251.6
253.4
255.2
257
258.8
260.6
262.4
264.2
266
267.8
269.6
271.4
273.2
275
276.8
1.427
1.386
1.346
1.307
1.269
1.233
1.198
1.164
1.131
1.099
1.069
1.039
1.01
0.983
0.956
0.93
0.904
0.88
0.856
0.833
0.811
0.77
0.769
0.746
0.729
0.71
0.692
0.674
0.658
0.64
0.623
0.607
0.592
0.577
0.563
0.549
0.535
0.521
0.509
Installation and Maintenance
Service Manual
Resistance Table of Discharge Temperature Sensor for Outdoor(50K)
Temp.(oF)
-20.2
-18.4
-16.6
-14.8
-13
-11.2
-9.4
-7.6
-5.8
-4
-2.2
-0.4
1.4
3.2
5
6.8
8.6
10.4
12.2
14
15.8
17.6
19.4
21.2
23
24.8
26.6
28.4
30.2
32
33.8
35.6
37.4
39.2
41
42.8
44.6
46.4
48.2
Resistance(kΩ)
853.5
799.8
750
703.8
660.8
620.8
580.6
548.9
516.6
486.5
458.3
432
407.4
384.5
362.9
342.8
323.9
306.2
289.6
274
259.3
245.6
232.6
220.5
209
198.3
199.1
178.5
169.5
161
153
145.4
138.3
131.5
125.1
119.1
113.4
108
102.8
Installation and Maintenance
Temp.(oF)
50
51.8
53.6
55.4
57.2
59
60.8
62.6
64.4
66.2
68
69.8
71.6
73.4
75.2
77
78.8
80.6
82.4
84.2
86
87.8
89.6
91.4
93.2
95
96.8
98.6
100.4
102.2
104
105.8
107.6
109.4
111.2
113
114.8
116.6
118.4
Resistance(kΩ)
98
93.42
89.07
84.95
81.05
77.35
73.83
70.5
67.34
64.33
61.48
58.77
56.19
53.74
51.41
49.19
47.08
45.07
43.16
41.34
39.61
37.96
36.38
34.88
33.45
32.09
30.79
29.54
28.36
27.23
26.15
25.11
24.13
23.19
22.29
21.43
20.6
19.81
19.06
Temp.(oF)
120.2
122
123.8
125.6
127.4
129.2
131
132.8
134.6
136.4
138.2
140
141.8
143.6
145.4
147.2
149
150.8
152.6
154.4
156.2
158
159.8
161.6
163.4
165.2
167
168.8
170.6
172.4
174.2
176
177.8
179.6
181.4
183.2
185
186.8
188.6
Resistance(kΩ)
18.34
17.65
16.99
16.36
15.75
15.17
14.62
14.09
13.58
13.09
12.62
12.17
11.74
11.32
10.93
10.54
10.18
9.827
9.489
9.165
8.854
8.555
8.268
7.991
7.726
7.47
7.224
6.998
6.761
6.542
6.331
6.129
5.933
5.746
5.565
5.39
5.222
5.06
4.904
Temp.(oF)
190.4
192.2
194
195.8
197.6
199.4
201.2
203
204.8
206.6
208.4
210.2
212
213.8
215.6
217.4
219.2
221
222.8
224.6
226.4
228.2
230
231.8
233.6
235.4
237.2
239
240.8
242.6
244.4
246.2
248
249.8
251.6
253.4
255.2
257
258.8
Resistance(kΩ)
4.754
4.609
4.469
4.334
4.204
4.079
3.958
3.841
3.728
3.619
3.514
3.413
3.315
3.22
3.129
3.04
2.955
2.872
2.792
2.715
2.64
2.568
2.498
2.431
2.365
2.302
2.241
2.182
2.124
2.069
2.015
1.963
1.912
1.863
1.816
1.77
1.725
1.682
1.64
85
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