Cree GWH09QB-D3DNA5E/I, CB425N04300, GWH12QC-D3DNA5E/I, GWH09QB-D3DNA6E/O, GWC12QC-D3DNA6E/O Service Manual
...
GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI
Change for Life
Service Manual
Service Manual
Table of Contents
Part
Ⅰ
: Technical Information
.......................................................................1
1. Summary
......................................................................................................................1
2. Specications
..........................................................................................................3
2.1 Specication 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: Conguration of Connection Pipe .....................................................................81
Appendix 3: Pipe Expanding Method ...................................................................................82
Appendix 4: List of Resistance for Temperature Sensor ......................................................83
Table of Contents
1
Technical Information
Service Manual
1. Summary
Part
Ⅰ
: Technical Information
Indoor Unit
A5 Panel
A6 Panel
B4 Panel
B2 Panel
C2 Panel
B8 Panel A1 Panel
GWH09QB-D3DNA5E/I(CB425N04300)
GWH12QC-D3DNA5E/I(CB425N04501)
2
Technical Information
Service Manual
Model List:
No Model Product code Indoor model
Indoor product
code
Outdoor model
Outdoor product
code
1 GWC09QB-D3DNA6E(LC) CB427001900 GWC09QB-D3DNA6E/I CB427N01900
GWC09QB-D3DNA6E/O(LC) CB427W01900
2 GWC09QB-D3DNB4E(LC) CB434001700 GWC09QB-D3DNB4E/I CB434N01700
3 GWC09QB-D3DNA5E(LC) CB425004600 GWC09QB-D3DNA5E/I CB425N04600
4 GWC09QB-D3DNC2E(LC) CB439001000 GWC09QB-D3DNC2E/I CB439N01000
5 GWC09QB-D3DNA1E(LC) CB419007300 GWC09QB-D3DNA1E/I CB419N07300
6 GWC09QB-D3DNB2E(LC) CB432004000 GWC09QB-D3DNB2E/I CB432N04000
7 GWH09QB-D3DNA6E(LCLH) CB427002200 GWH09QB-D3DNA6E/I CB427N02200
GWH09QB-D3DNA6E/O(LCLH) CB427W02200
8 GWH09QB-D3DNB4E(LCLH) CB434001800 GWH09QB-D3DNB4E/I CB434N01800
9 GWH09QB-D3DNA5E(LCLH) CB425004300 GWH09QB-D3DNA5E/I CB425N04300
10 GWH09QB-D3DNA5E(LCLH) CB425004301 GWH09QB-D3DNA5E/I CB425N04301
11 GWH09QB-D3DNC2E(LCLH) CB439001100 GWH09QB-D3DNC2E/I CB439N01100
12 GWH09QB-D3DNB2E(LCLH) CB432003301 GWH09QB-D3DNB2E/I CB432N03301
13 GWC12QC-D3DNA6E(LC) CB427001800 GWC12QC-D3DNA6E/I CB427N01800
GWC12QC-D3DNA6E/O(LC) CB427W01800
14 GWC12QC-D3DNB4E(LC) CB434001600 GWC12QC-D3DNB4E/I CB434N01600
15 GWC12QC-D3DNC2E(LC) CB439000800 GWC12QC-D3DNC2E/I CB439N00800
16 GWC12QC-D3DNA5E(LC) CB425004400 GWC12QC-D3DNA5E/I CB425N04400
17 GWC12QC-D3DNB2E(LC) CB432002500 GWC12QC-D3DNB2E/I CB432N02500
18 GWC12QC-D3DNB8E(LC) CB438001600 GWC12QC-D3DNB8E/I CB438N01600
19 GWC12QC-D3DNA1E(LC) CB419007100 GWC12QC-D3DNA1E/I CB419N07100
20 GWH12QC-D3DNA6E(LCLH) CB427002100 GWH12QC-D3DNA6E/I CB427N02100
GWH12QC-D3DNA6E/O(LCLH) CB427W02100
21 GWH12QC-D3DNB4E(LCLH) CB434001300 GWH12QC-D3DNB4E/I CB434N01300
22 GWH12QC-D3DNC2E(LCLH) CB439000900 GWH12QC-D3DNC2E/I CB439N00900
23 GWH12QC-D3DNA5E(LCLH) CB425004500 GWH12QC-D3DNA5E/I CB425N04500
24 GWH12QC-D3DNA5E(LCLH) CB425004501 GWH12QC-D3DNA5E/I CB425N04501
25 GWH12QC-D3DNB2E(LCLH) CB432002600 GWH12QC-D3DNB2E/I CB432N02600
26 GWH12QC-D3DNB8E(LCLH) CB438001400 GWH12QC-D3DNB8E/I CB438N01400
Outdoor Unit
Remote Controller
YAN1F1F
GWC09QB-D3DNA6E/O
GWH09QB-D3DNA6E/O
GWC12QC-D3DNA6E/O
GWH12QC-D3DNA6E/O
3
Technical Information
Service Manual
2. Specications
2.1 Specication Sheet
Model
1.GWC09QB-D3DNA6E(LC)
2.GWC09QB-D3DNB4E(LC)
3.GWC09QB-D3DNA5E(LC)
4.GWC09QB-D3DNC2E(LC)
5.GWC09QB-D3DNB2E(LC)
6.GWC09QB-D3DNA1E(LC)
1.GWH09QB-D3DNA6E(LCLH)
2.GWH09QB-D3DNB4E(LCLH)
3.GWH09QB-D3DNA5E(LCLH)
4.GWH09QB-D3DNC2E(LCLH)
5.GWH09QB-D3DNB2E(LCLH)
Product Code
1.CB427001900 2.CB434001700
3.CB425004600 4.CB439001000
5.CB432004000 6.CB419007300
1.CB427002200 2.CB434001800
3.CB425004300 CB425004301
4.CB439001100 5.CB432003301
Power Supply
Rated Voltage V~ 208/230 208/230
Rated Frequency Hz 60 60
Phases 1 1
Power Supply Mode Outdoor Outdoor
Cooling Capacity(Min~Max) Btu/h 9000(3100~9600) 9000(3100~9600)
Heating Capacity(Min~Max) Btu/h / 9500(3100~12000)
Cooling Power Input(Min~Max) W 900(375~1300) 900(375~1300)
Heating Power Input(Min~Max) W / 800(300~1350)
Cooling Power Current A 4 4
Heating Power Current A / 3.6
Rated Input W 1300 1350
Rated Current A 5.8 6.0
Air Flow Volume(SH/H/M/L) CFM 318/288/241/171 318/288/241/171
Dehumidifying Volume Pint/h 1.69 1.69
EER (Btu/h)/W 10.00 10.00
COP (Btu/h)/W / 11.88
SEER 16.00 16.00
HSPF / 9.00
Application Area yd
2
14.35-21.53 14.35-21.53
Indoor Unit
Model of indoor unit
1.GWC09QB-D3DNA6E/I
2.GWC09QB-D3DNB4E/I
3.GWC09QB-D3DNA5E/I
4.GWC09QB-D3DNC2E/I
5.GWC09QB-D3DNB2E/I
6.GWC09QB-D3DNA1E/I
1.GWH09QB-D3DNA6E/I
2.GWH09QB-D3DNB4E/I
3.GWH09QB-D3DNA5E/I
4.GWH09QB-D3DNC2E/I
5.GWH09QB-D3DNB2E/I
Indoor Unit Product Code
1.CB427N01900 2.CB434N01700
3.CB425N04600 4.CB439N01000
5.CB432N04000 6.CB419N07300
1.CB427N02200 2.CB434N01800
3.CB425N04300 CB425N04301
4.CB439N01100 5.CB432N03301
Fan Type Cross-ow Cross-ow
Diameter Length(DXL) inch Φ3 7/8X22 13/16 Φ3 7/8X22 13/16
Fan Motor Cooling Speed(SH/H/M/L) r/min 1350/1200/1050/750/- 1350/1200/1050/750/Fan Motor Heating Speed(SH/H/M/L) r/min / 1350/1200/1050/850/Output of Fan Motor W 20 20
Fan Motor RLA A 0.215 0.215
Fan Motor Capacitor μF 1 1
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter inch Φ3/16 Φ3/16
Row-n Gap inch 2-1/16 2-1/16
Coil Length (LXDXW) inch 23X7/8X10 1/2 23X7/8X10 1/2
Swing Motor Model MP24AA MP24AA
Output of Swing Motor W 1.5 1.5
Fuse A 3.15 3.15
Sound Pressure Level(SH/H/M/L) dB (A) 43/38/34/28/- 43/38/34/28/Sound Power Level(SH/H/M/L) dB (A) 53/48/44/38/- 53/48/44/38/Dimension (WXHXD) inch 31 1/8X10 7/8X7 7/8 31 1/8X10 7/8X7 7/8
Dimension of Carton Box (LXWXH) inch 34X10 9/16X13 7/8 34X10 9/16X13 7/8
Dimension of Package (LXWXH) inch 34X10 11/16X14 7/16 34X10 11/16X14 7/16
Net Weight Ib 19.8 19.8
Gross Weight Ib 24.3 24.3
4
Technical Information
Service Manual
Outdoor Unit
Model of Outdoor Unit GWC09QB-D3DNA6E/O(LC) GWH09QB-D3DNA6E/O(LCLH)
Outdoor Unit Product Code CB427W01900 CB427W02200
Compressor Manufacturer/Trademark
ZHUHAI GREE DAIKIN DEVICE
CO.,LTD
ZHUHAI GREE DAIKIN DEVICE
CO.,LTD
Compressor Model 1GDY23AXD 1GDY23AXD
Compressor Oil DAPHNE FVC50K DAPHNE FVC50K
Compressor Type Swing Swing
Compressor Locked Rotor Amp (L.R.A) A / /
Compressor RLA A 4.00 4.00
Compressor Power Input W 845 845
Overload Protector KSD115℃ or HPC115/95 KSD115℃ or HPC115/95
Throttling Method 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
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter inch Φ5/16 Φ5/16
Rows-n 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
Fan Motor RLA A 0.36 0.36
Fan Motor Capacitor μF / /
Air Flow Volume of Outdoor Unit CFM 942 942
Fan Type Axial-ow Axial-ow
Fan Diameter inch Φ15 3/4 Φ15 3/4
Defrosting Method / Automatic Defrosting
Climate Type T1 T1
Isolation I I
Moisture Protection IP24 IP24
Permissible Excessive Operating
Pressure for the Discharge Side
PSIG 620 620
Permissible Excessive Operating
Pressure for the Suction Side
PSIG 360 360
Sound Pressure Level (H/M/L) dB (A) 52/-/- 52/-/-
Sound Power Level (H/M/L) dB (A) 62/-/- 62/-/-
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 66.2 65.0
Gross Weight Ib 71.7 70.6
Refrigerant R410A R410A
Refrigerant Charge oz 24.7 24.7
Connection
Pipe
Length ft 24.6 24.6
Gas Additional Charge oz/ft 0.2 0.2
Outer Diameter Liquid Pipe inch Φ1/4 Φ1/4
Outer Diameter Gas Pipe inch Φ3/8 Φ3/8
Max Distance Height ft 32.8 32.8
Max Distance Length 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.
5
Technical Information
Service Manual
Model
1.GWC12QC-D3DNA6E(LC)
2.GWC12QC-D3DNB4E(LC)
3.GWC12QC-D3DNC2E(LC)
4.GWC12QC-D3DNA5E(LC)
5.GWC12QC-D3DNB2E(LC)
6.GWC12QC-D3DNB8E(LC)
7.GWC12QC-D3DNA1E(LC)
1.GWH12QC-D3DNA6E(LCLH)
2.GWH12QC-D3DNB4E(LCLH)
3.GWH12QC-D3DNC2E(LCLH)
4.GWH12QC-D3DNB2E(LCLH)
5.GWH12QC-D3DNA5E(LCLH)
6.GWH12QC-D3DNB8E
Product Code
1.CB427001800 2.CB434001600
3.CB439000800 4.CB425004400
5.CB432002500 6.CB438N01600
7.CB419007100
1.CB427002100 2.CB434001300
3.CB439000900 4.CB432002600
5.CB425004500 CB425004501
6.CB438001400
Power Supply
Rated Voltage V~ 208/230 208/230
Rated Frequency Hz 60 60
Phases 1 1
Power Supply Mode Outdoor Outdoor
Cooling Capacity(Min~Max) Btu/h 12000(3753~12500) 12000(3753~12500)
Heating Capacity(Min~Max) Btu/h / 13000(3924~14000)
Cooling Power Input(Min~Max) W 1300(410~1350) 1300(410~1350)
Heating Power Input(Min~Max) W / 1250(380~1500)
Cooling Power Current A 5.8 5.8
Heating Power Current A / 5.6
Rated Input W 1350 1500
Rated Current A 5.8 6.7
Air Flow Volume(SH/H/M/L) CFM 400/318/253/194 400/318/253/194
Dehumidifying Volume Pint/h 2.96 2.96
EER (Btu/h)/W 9.23 9.23
COP (Btu/h)/W / 10.40
SEER 16.00 16.00
HSPF / 9.00
Application Area yd
2
19.14-28.70 19.14-28.70
Indoor Unit
Model of indoor unit
1.GWC12QC-D3DNA6E/I
2.GWC12QC-D3DNB4E/I
3.GWC12QC-D3DNC2E/I
4.GWC12QC-D3DNA5E/I
5.GWC12QC-D3DNB2E/I
6.GWC12QC-D3DNB8E/I
7.GWC12QC-D3DNA1E/I
1.GWH12QC-D3DNA6E/I
2.GWH12QC-D3DNB4E/I
3.GWH12QC-D3DNC2E/I
4.GWH12QC-D3DNB2E/I
5.GWH12QC-D3DNA5E/I
6.GWH12QC-D3DNB8E/I
Indoor Unit Product Code
1.CB427N01800 2.CB434N01600
3.CB439N00800 4.CB425N04400
5.CB432N02500 6.CB438N01600
7.CB419N07100
1.CB427N02100 2.CB434N01300
3.CB439N00900 4.CB432N02600
5.CB425N04500 CB425N04501
6.CB438N01400
Fan Type Cross-ow Cross-ow
Diameter Length(DXL) inch Φ3 7/8X25 Φ3 7/8X25
Fan Motor Cooling Speed(SH/H/M/L) r/min 1350/1200/1000/800/- 1350/1200/1000/800/Fan Motor Heating Speed(SH/H/M/L) r/min / 1350/1200/1000/900/Output of Fan Motor W 20 20
Fan Motor RLA A 0.21 0.21
Fan Motor Capacitor μF 1.5 1.5
Evaporator Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter inch Φ3/16 Φ3/16
Row-n Gap inch 2-1/16 2-1/16
Coil Length (LXDXW) inch 25X7/8X12 1/16 25X7/8X12 1/16
Swing Motor Model MP24BA MP24BA
Output of Swing Motor W 1.5 1.5
Fuse A 3.15 3.15
Sound Pressure Level(SH/H/M/L) dB (A) 45/39/35/29/- 45/39/35/29/Sound Power Level(SH/H/M/L) dB (A) 55/49/45/39/- 55/49/45/39/Dimension (WXHXD) inch 33 1/4X11 3/8X8 1/4 33 1/4X11 3/8X8 1/4
Dimension of Carton Box (LXWXH) inch 36 1/8X11X14 5/16 36 1/8X11X14 5/16
Dimension of Package (LXWXH) inch 36 1/4X11X15 36 1/4X11X15
Net Weight Ib 23.2 23.2
Gross Weight Ib 27.6 27.6
6
Technical Information
Service Manual
Outdoor Unit
Model of Outdoor Unit GWC12QC-D3DNA6E/O(LC) GWH12QC-D3DNA6E/O(LCLH)
Outdoor Unit Product Code CB427W01800 CB427W02100
Compressor Manufacturer/Trademark
ZHUHAI GREE DAIKIN DEVICE
CO.,LTD
ZHUHAI GREE DAIKIN DEVICE
CO.,LTD
Compressor Model 1GDY23AXD 1GDY23AXD
Compressor Oil DAPHNE FVC50K DAPHNE FVC50K
Compressor Type Swing Swing
Compressor Locked Rotor Amp (L.R.A) A / /
Compressor RLA A 4.00 4.00
Compressor Power Input W 845 845
Overload Protector KSD115℃ or HPC115/95 KSD115℃ or HPC115/95
Throttling Method 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
Condenser Form Aluminum Fin-copper Tube Aluminum Fin-copper Tube
Pipe Diameter inch Φ5/16 Φ5/16
Rows-n 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
Fan Motor RLA A 0.36 0.36
Fan Motor Capacitor μF / /
Air Flow Volume of Outdoor Unit CFM 942 942
Fan Type Axial-ow Axial-ow
Fan Diameter inch Φ15 3/4 Φ15 3/4
Defrosting Method / Automatic Defrosting
Climate Type T1 T1
Isolation I I
Moisture Protection IP24 IP24
Permissible Excessive Operating
Pressure for the Discharge Side
PSIG 620 620
Permissible Excessive Operating
Pressure for the Suction Side
PSIG 360 360
Sound Pressure Level (H/M/L) dB (A) 52/-/- 53/-/-
Sound Power Level (H/M/L) 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
Refrigerant R410A R410A
Refrigerant Charge oz 30.0 30.0
Connection
Pipe
Length ft 24.6 24.6
Gas Additional Charge oz/ft 0.2 0.2
Outer Diameter Liquid Pipe inch Φ1/4 Φ1/4
Outer Diameter Gas Pipe inch Φ3/8 Φ3/8
Max Distance Height ft 32.8 32.8
Max Distance Length 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.
7
Technical Information
Service Manual
0
09070605040302010
1
10
210010908070605040302010
80
11
10
9
8
7
6
5
4
3
2
1
0
11
10
9
8
7
6
5
4
3
2
1
0
• Conditions
Indoor : DB80˚F/WB66.9˚F
Outdoor: DB95˚F
Indoor air flow : High
220V
230V
240V
220V
230V
240V
Current (A)
Current (A)
Compressor frequency(Hz)
Compressor frequency(Hz)
89 91 93 95 97 99 100 102 109.45 14 23 32104 106 108
100
105
95
90
85
80
75
70
65
60
55
50
Outdoor temp. (˚F)
110
100
90
80
70
60
50
40
Outdoor temp. (˚F)
Capacity ratio (%)
Capacity ratio (%)
Pipe lengt : 24.6ft
41 44.6
50
• Conditions
Indoor : DB70˚F/WB60˚F
Outdoor : DB19.94˚F/WB19.04˚F
Indoor air flow : High
Pipe lengt : 24.6ft
• Conditions
Indoor : DB70˚F/WB60˚
Outdoor : DB19.94˚F/WB19.04˚F
Indoor air flow : High
Pipe lengt : 24.6ft
• Conditions
Indoor : DB80˚F/WB66.9˚F
Outdoor: DB95˚F
Indoor air flow : High
Pipe lengt : 24.6ft
2.2 Operation Characteristic Curve
2.3 Capacity Variation Ratio According to Temperature
Cooling
Heating
Cooling
Heating
8
Technical Information
Service Manual
2.4 Cooling and Heating Data Sheet in Rated Frequency
Cooling:
Heating:
2.5 Noise Curve
Rated cooling
condition(°F) (DB/WB)
Model
Pressure of gas pipe
connecting indoor and
outdoor unit
Inlet and outlet pipe
temperature of heat
exchanger
Fan speed of
indoor unit
Fan speed of
outdoor unit
Compressor
revolution
(rps)
Indoor Outdoor P (PSIG) T1 (°F) T2 (°F)
80/66.9 95/- 09K 130~142
in:46.4~51.8
out:51.8~57.2
in:167~181.4
out:98.6~118.4
Super High High 52
80/66.9 95/- 12K 130~142
in:46.4~51.8
out:51.8~57.2
in:167~181.4
out:98.6~118.4
Super High High 72
Rated heating
condition(°F) (DB/WB)
Model
Pressure of gas pipe
connecting indoor and
outdoor unit
Inlet and outlet pipe
temperature of heat
exchanger
Fan speed of
indoor unit
Fan speed of
outdoor unit
Compressor
revolution
(rps)
Indoor Outdoor P (PSIG) T1 (°F) T2 (°F)
70/60 19.94/19.04 09K 362~406
in:167~181.4
out:98.6~113
in:33.8~37.4
out:35.6~42.8
Super High High 65
70/60 19.94/19.04 12K 362~406
in:167~181.4
out:98.6~113
in:33.8~37.4
out:35.6~42.8
Super High 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.
Indoor side noise when blowing Outdoor side noise when blowing
Indoor fan motor rotating speed Compressor frequency(Hz)
Noise/dB(A)
50
60
30
40
20
Low
Middle
High
Super High
40
42
44
46
48
50
52
54
56
20 4030 50 60 70 80
90
Noise dB(A)
09&12K Cooling
09&12K Heating
09K
12K
9
Technical Information
Service Manual
3. Outline Dimension Diagram
3.1 Indoor Unit
W
D
H
3 1/2
6
2 1/8
2 1/8
6 5/8 18 3/16 6 5/16
Φ2 3/16
Φ2 3/16
Φ2 3/16
Φ2 3/16
4 11/1621 5/16 7 1/4
3 5/16
5
1 3/8
1 3/8
MODEL W H D
09K 31 1/8 10 7/8 7 7/8
12K 33 1/4 11 3/8 8 1/4
09K
12K
Unit:inch
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Technical Information
Service Manual
3.2 Outdoor Unit
30 9/16
21 1/4
12 5/8
28
11 1/4
20
10 1/8
11
Technical Information
Service Manual
Cooling only models
Cooling and heating models
Indoor unit
Outdoor unit
Accumlator
Discharge
Suction
Heat
exchanger
(evaporator)
Heat
exchanger
(condenser)
Valve
Valve
Liquid pipe
side
Gas pipe
side
Strainer
Capillary
Compressor
Indoor unit
Outdoor unit
COOLING
HEATING
4-Way valve
Discharge
Suction
Heat
exchanger
(evaporator)
Heat
exchanger
(condenser)
Valve
Valve
Liquid pipe
side
Gas pipe
side
Strainer
Strainer
Capillary
Accumlator
Compressor
Connection pipe specication:
Liquid pipe:1/4"
Gas pipe:3/8"
4. Refrigerant System Diagram
12
Technical Information
Service Manual
5. Electrical Part
5.1 Wiring Diagram
● Indoor Unit
● 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 Grounding wire
YEGN Yellow/Green BK Black / /
VT Violet OG Orange / /
Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model.
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13
Technical Information
Service Manual
● Outdoor Unit
GWC09QB-D3DNA6E/O GWC12QC-D3DNA6E/O
GWH09QB-D3DNA6E/O GWH12QC-D3DNA6E/O
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These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
14
Technical Information
Service Manual
5.2 PCB Printed Diagram
Indoor Unit
● Top view
● Bottom view
12 34
567
8
9
10
11
12
13
14
15
16
1 Neutral wire for health function
2 Neutral wire
3 Motor of indoor fan
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
10 Interface of wired controller
11 Display interface
12 Control port of compressor
13 Interface of communication circuit
14 Live wire
15 Fuse
16 Capacitor of indoor fan
15
Technical Information
Service Manual
12
3
4
5
678910
11
12
● Top view
Outdoor Unit
● Bottom view
1 Interface of indoor fan
2 Interface of electric heating belt
3 Interface of 4-way valve
4
Interface of electronic
expansion valve
5 Interface of earthing wire
6 Interface of live wire
7 Interface of neutral wire
8
Interface of communication
wire for indoor fan and outdoor
fan
9
Overload interface of
compressor
10
Interface of temperature sensor
wire
11 Interface of compressor wire
12 Interface of PFC wire
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Technical Information
Service Manual
6. Function and Control
6.1 Remote Controller Introduction
Introduction for icons on display screen
Introduction for buttons on remote controller
1
5
3
6
8
10
12
11
9
7
4
2
1
2
3
4
5
6
7
8
9
10
11
12
ON/OFF button
MODE button
FAN button
SWING button
TURBO button
TEMP button
I FEEL button
LIGHT button
CLOCK button
TIMER ON / TIMER OFF
button
SLEEP button
▲/ button
▲
Send signal
Turbo mode
8℃ heating function
Set temperature
Set time
TIMER ON / TIMER OFF
Child lock
Up & down swing
Set fan speed
Light
Temp. display type
:Set temp.
:Outdoor ambient temp.
:Indoor ambient temp.
Sleep mode
Clock
Heat mode
Fan mode
Dry mode
Cool mode
Auto mode
Operation mode
I feel
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.
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Technical Information
Service Manual
1. ON/OFF button
2. MODE button
3. FAN button
Press this button can turn on or turn off the air conditioner. After turning on the air conditioner, operation indicator " "on indoor unit’s
display is ON (green indicator. The colour is different for different models), and indoor unit will give out a sound.
● 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.
5. TURBO button
Under COOL or HEAT mode, press this button to turn to quick COOL or quick HEAT mode. " " icon is displayed on remote controller.
Press this button again to exit turbo function and " " icon will disappear.
6. ▲/▲ 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)
Caution:
● Under AUTO speed, air conditioner will select proper fan speed automatically according to factory setting.
● Fan speed under dry mode is low speed.
Pressing this button can set fan speed circularly as: auto (AUTO), low( ) ,medium( ), high( ).
Press this button to select your required operation mode.
AUTO COOL FAN
DRY HEAT
Auto
4. SWING button
Press this button can select up&down swing angle. Fan blow angle can be selected circularly as below:
● 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 xed position. Horizontal louver will stop at the xed position.
● When selecting " 、 、 " , air conditioner is blowing fan at xed angle. Horizontal louver will send air at the xed 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.
no display
(horizontal louvers stops at current position)
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Technical Information
Service Manual
7. SLEEP button
9. I FEEL button
10. LIGHT button
11. CLOCK button
12. TIMER ON / TIMER OFF button
Under COOL, HEAT or DRY mode, press this button to start up sleep function. " " icon is displayed on remote controller. Press this button
again to cancel sleep function and " " icon will disappear.
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.
Press this button to turn off display light on indoor unit. " " icon on remote controller disappears. Press this button again to turn on
display light. " " icon is displayed.
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 conrm 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.
● 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
conrm 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.
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:
● When selecting " " or no display with remote controller, temperature indicator on indoor unit displays set temperature.
● When selecting " " with remote controller, temperature indicator on indoor unit displays indoor ambient temperature.
● When selecting " " with remote controller, temperature indicator on indoor unit displays outdoor ambient temperature.
Note:
●
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 ve seconds.
no display
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Technical Information
Service Manual
Function introduction for combination buttons
Operation guide
Replacement of batteries in remote controller
1. Energy-saving function
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.
● 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 uorescent 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.
2. 8 ℃ heating function
3. Child lock function
4. Temperature display switchover 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.
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.
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.
Under OFF status, press "▲" and "MODE" buttons simultaneously to switch temperature display between ℃ and ℉.
1. Press the back side of remote controller marked with " ", as shown in the g, 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.
Note:
signal sender battery
Cover of battery box
remove
reinstall
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Technical Information
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.
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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
nishing 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.
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Technical Information
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 = (T
indoor ambient temperature
–⊿T
cooling indoor ambient temperature
compensation
)
b. In heating mode, the indoor ambient temperature participating in computing control= (T
indoor ambient temperature
–⊿T
heating 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 satised, 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 (T
exhaust (after start-
up for 10 minutes)
- T
exhaust (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 rst time).
b. Comparative judgment of exhaust detection temperature and condenser detection temperature (T
pipe temperature
= T
outdoor pipe temperature in cooling
mode
, T
pipe temperature
= T
indoor pipe temperature in heating mode
): After the compressor starts up and runs for 10 minutes, if the compressor frequency f ≥
40Hz, and T
pipe temperature
≥(T
exhaust+37.4
), the outdoor exhaust temperature thermobulb can be judged not to be connected into place (judging
once when power is on the rst time).
2. Basic Functions
(1) Cooling Mode
1. Conditions and processes of cooling operation:
(1) If the compressor is shut down, and [Tsetup – (T
indoor ambient temperature
– ⊿T
cooling 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 – (T
indoor ambient temperature
– ⊿T
cooling indoor ambient temperature compensation)
] < 35.6ºF , the cooling
operation will be still running;
(3) During operations of cooling, if 35.6ºF ≤ [Tsetup – (T
indoor ambient temperature
– ⊿T
cooling indoor ambient temperature compensation)
], the cooling operation
will stop after reaching the temperature point.
2. Temperature setting range
(1) If T
outdoor ambient temperature
≥ [T
low-temperature cooling temperature
], the temperature can be set at: 60.8~86ºF (Cooling at room temperature);
(2) If T
outdoor ambient temperature
< [T
low-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 [(T
indoor ambient temperature
– ⊿T
heating indoor ambient temperature compensation
) –T
setup
] ≤ 32.9ºF , start the machine
to enter into heating operations for heating;
(2) During operations of heating, if 32ºF ≤ [(T
indoor ambient temperature
–⊿ T
heating indoor ambient temperature compensation
) –T
setup
] < 35.6ºF , the heating
operation will be still running;
(3) During operations of heating, if 35.6ºF ≤ [(T
indoor ambient temperature
– ⊿T
heating indoor ambient temperature compensation
) –T
setup
], the heating operation
will stop after reaching the temperature point.
2. The temperature setting range in this mode is: 60.8~86ºF .
23
Technical Information
Service Manual
3. Special Functions
Defrosting Control
①
Conditions for starting defrosting
After the time for defrosting is judged to be satised, if the temperature for defrosting is satised after detections for continuous 3minutes,
the defrosting operation will start.
②
Conditions of nishing defrosting
The defrosting operation can exit when any of the conditions below is satised:
③
T
outdoor pipe temperature
≥ (T
outdoor ambient temperature
– [T
temperature 1 of nishing 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 ow speed can the air ow be switched;
After the outer fans run compulsively in high speed for 80s when the machine starts up, control the air ow 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 ow 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 ow.
(3) 4-way valve control
1. The 4-way valve control under the modes of Cooling, dehumidication 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.
24
Technical Information
Service Manual
1. Starting estimation:
After the compressor stopped working for 180s, if T
inner pipe
> [T
frozen-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 frozen-
preventing protection: Clear the trouble under the mode of power turn-off / heating, and the protection times are not counted.
2. Frequency limited
[T
frozen-preventing normal speed frequency-reducing temperature
] ≤[T
inner pipe T frozen-preventing frequency-limited temperature
] , you should limit the frequency raising of
compressor.
3. Reducing frequency at normal speed:
If [T
frozen-preventing high speed frequency-reducing temperature
] ≤[T
inner 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 [T
frozen-preventing power turn-off temperature
] ≤T
inner pipe
[T
frozen-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 T
inner pipe
<[T
frozen-preventing power turn-off temperature
], then frozen-preventing protect to stop the machine; If T[
frozen-preventing frequency-limited temperature
]
<T
inner 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 T
outer pipe
<[T
Cooling 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 [T
Cooling overload frequency-limited temperature
] ≤[T
outer 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 [T
Cooling overload frequency reducing temperature at high speed
] ≤T
outer pipe
< [T
Cooling 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 [T
Cooling overload frequency reducing temperature at normal speed
]≤T
outer pipe
,
then Cooling overload protects machine stopping;
4. Reducing frequency at high speed and stop machine:
If [T
Cooling overload frequency reducing temperature at high speed
]≤T
outer pipe
[T
Cooling 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
Cooling overload frequency reducing temperature at normal speed
] ≤[T
outer pipe]
,
then Cooling overload protects machine stopping;
5. Power turn-off:
If the [T
Cooling overload power turn-off temperature
] ≤T
outer pipe
, then Cooling overload protects machine stopping; If [T
outer pipe
]<[T
Cooling 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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