Gree 3VIR09HP115V1A, CB385005800, 3VIR09HP115V1AH, CB385N05800, 3VIR09HP115V1AO Service Manual
...Page 1
SERVICE
MANUAL
Single-Zone, Heat Pump System
1
15V and 230V, 9 - 24K Btu/h
Thank you for choosing our product.
Please read this Installation & Owner’s Manual carefully before
operation and retain it for future reference.
If you lose this Manual, please contact your local distributor or
visit www.greecomcomfort.com/resources now to download and
file the electronic version.
CAT NO: GREE_VIREOGEN3_SERVICE_090921
Page 2
Table of Contents
Service Manual
Part I : Technical Information
1. Summary
2. Specifications
2.1 Specification Sheet .............................................................................. 2-13
2.2 Capacity Variation Ratio According to Temperature ........................... 14
2.3 Cooling and Heating Data Sheet in Rated Frequency ......................... 15
2.4 Noise Curve ............................................................................................. 15
3.
Outline Dimension Diagram
3.1 Indoor Unit ............................................................................................... 16
3.2 Outdoor Unit ....................................................................................... 17-18
4.
Refrigerant System Diagram
......................................................................... 1
......................................................... 2-15
..................................... 1
............................. 16-18
........................... 19-20
5.
Electrical Part
5.1 Wiring Diagram ................................................................................... 21-24
5.2 PCB Printed Diagram ......................................................................... 25-28
6.
Function and Control
6.1 Remote Controller Introduction of YAP1F7F(WiFi) ......................... 29-33
6.2 GREE+ App Operation Manual ............................................................... 34
6.3 Ewpe Smart App Operation Manual ...................................................... 35
6.4 Brief Description of Modes and Functions ...................................... 36-38
Part II : Installation and Maintenance
Notes for Installation and Maintenance
7.
8. Installation
............................................................... 42-48
......................................................... 21-28
.......................................... 29-38
............. 39-70
...... 39-41
8.1 Installation Dimension Diagram & Procedures.................................39-40
8.2 Installation Parts-checking ................................................................... 44
8.3 Selection of Installation Location .......................................................... 44
8.4 Electric Connection Requirement ......................................................... 44
Table of Contents
Page 3
Service Manual
8.5 Installation of Indoor Unit .................................................................. 44-46
8.6 Installation of Outdoor unit ...............................................................47-48
8.7 Vacuum Pumping and Leak Detection ..................................................48
8.8 Check after Installation and Test operation .......................................... 48
9. Maintenance
9.1 Error Code List ...................................................................................49-55
9.2 Procedure of Troubleshooting ..........................................................56-68
9.3 Troubleshooting for Normal Malfunction .........................................69-70
10. Removal Procedure
11.1 Removal Procedure of Indoor Unit ............................................... 71-76
11.2 Removal Procedure of Outdoor Unit ............................................. 76-94
Appendix:
...................................................................... 95-97
........................................................... 49-66
.......................................... 71-94
Appendix 1: Reference Sheet of Celsius and Fahrenheit ........................ 95
Appendix 2: Configuration of Connection Pipe ........................................ 95
Appendix 3: Pipe Expanding Method ......................................................... 96
Appendix 4: List of Resistance for Temperature Sensor ........................ 97
Table of Contents
Page 4
1. Summary
Service Manual
Indoor Unit:
A1 Panel:
Outdoor Unit:
3VIR09HP230V1AO
3VIR09HP115V1AO
3VIR12HP230V1AO
3VIR12HP115V1AO
3VIR18HP230V1AO
Remote Controller:
YAP1F7F(WiFi)
ON/OFF
FAN
MODE
TURBO
I FEEL
T-ON T-OFF
CLOCK
TEMP
LIGHT
SLEEP
WiFi
Model list
No. Model Product code Indoor model
:
3VIR24HP230V1AO
Indoor product
code
Outdoor model
Outdoor
product code
Remote
Controller
3VIR09HP115V1A CB385005800 3VIR09HP115V1AH CB385N05800 3VIR09HP115V1AO CB385W05800
1
3VIR09HP230V1A
2
3VIR12HP115V1A CB385006200
3
3VIR12HP230V1A
4
3VIR18HP230V1A
5
6
3VIR24HP230V1A
CB385002900
3VIR09HP230V1AH
3VIR12HP115V1AH
CB385N02900 3VIR09HP230V1AO CB385W02900
CB385N06200
3VIR12HP115V1AO
CB385W06200
CB385004000 3VIR12HP230V1AH CB385N04000 3VIR12HP230V1AO CB385W04000
CB385004400
3VIR18HP230V1AH
CB385N04400
3VIR18HP230V1AO CB385W04400
CB385002600 3VIR24HP230V1AH CB385N02600 3VIR24HP230V1AO CB385W02600
Technical Information
YAP1F7F
(WiFi)
1
Page 5
2. Specications
2.1 Specication Sheet
Service Manual
Model
Product Code CB385005800
Power
Supply
Power Supply Mode Outdoor
Cooling Capacity Btu/h 9100
Heating Capacity W 10000
Cooling Power Input W 626
Heating Power Input W 715
Cooling Power Current A 6.43
Heating Power Current A 7.42
Rated Input W 1410
Rated Cooling Current A 12.2
Rated Heating Current A 14.36
Air Flow Volume(SS/H/MH/M/ML/L/SL/SM) CFM 353/324/294/265/235/206/194/129
Dehumidifying Volume Pint/h 1.69
EER (Btu/h)/W 14.55
COP (Btu/h)/W 14
SEER 26.5
HSPF 11.2
Application Area yd
Rated Voltage V~ 115
Rated Frequency Hz 60
Phases 1
2
3VIR09HP115V1A
53-57
Indoor
Unit
Model of indoor unit 3VIR09HP115V1AH
Indoor Unit Product Code CB385N05800
Fan Type Cross-ow
Fan Diameter Length(DXL) mm Φ98X630
Cooling Speed r/min 1300/1200/1100/1000/900/800/750/500
Heating Speed r/min 1300/1200/1100/1000/900/850/800/-
Fan Motor Power Output W 15
Fan Motor RLA A 0.30
Fan Motor Capacitor μF /
Evaporator Form Aluminum Fin-copper Tube
Evaporator Pipe Diameter mm Φ5
Evaporator Row-n Gap mm 2-1.4
Evaporator Coil Length (LXDXW) mm
Swing Motor Model MP24AK/MP24BA/MP24HF
Swing Motor Power Output W 1.5/1.5/1.5
Fuse Current A 3.15
Sound Pressure Level dB (A)
Sound Power Level dB (A)
Dimension (WXHXD) inch 32 31/64 X 11 34/64 X 7 46/64
Dimension of Carton Box (LXWXH) inch 34 16/64 X 13 47/64 X 10 8/64
Dimension of Package (LXWXH) inch 34 29/64 X 14 24/64 X 10 35/64
Net Weight Ib 20.9
Gross Weight Ib
634 X 22.8 X 304.8
Cooling: 40/37/34/31/29/26/24/22
Heating: 41/38/35/31/29/26/25/-
Cooling: 50/47/44/41/39/36/34/32
Heating: 51/48/45/41/39/36/35/-
25.4
2
Technical Information
Page 6
2. Specications
Service Manual
Outdoor Unit Model
Outdoor Unit Product Code CB385W05800
Compressor Manufacturer
Compressor Model QXF-B103zF190A
Compressor Oil FW68DA
Compressor Type Rotary
Compressor LRA. A /
Compressor RLA A 12.50
Compressor Power Input W 800
Compressor Overload Protector HPC115/95U1 KSD115ºC
Throttling Method Electron expansion valve
Set Temperature Range ºF 61~86
Cooling Operation Ambient Temperature Range ºF -13~122
Heating Operation Ambient Temperature Range ºF -22~86
Condenser Form Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7.94
Condenser Rows-n Gap mm 2-1.4
Condenser Coil Length (LXDXW) mm 742 X 38.1 X 550
Fan Motor Speed rpm 900
Outdoor
Unit
Connection
Pipe
The above data is subject to change without notice. Please refer to the nameplate of the unit.
Fan Motor Power Output W 30
Fan Motor RLA A 0.50
Fan Motor Capacitor μF /
Outdoor Unit Air Flow Volume CFM 1295
Fan Type Axial-ow
Fan Diameter mm Φ438
Defrosting Method /
Climate Type T1
Isolation I
Moisture Protection IPX4
Permissible Excessive Operating Pressure for
the Discharge Side
Permissible Excessive Operating Pressure for
the Suction Side
Sound Pressure Level (H/M/L) dB (A) 52/-/-
Sound Power Level (H/M/L) dB (A) 62/-/-
Dimension(WXHXD) inch
Dimension of Carton Box (LXWXH) inch
Dimension of Package(LXWXH) inch
Net Weight Ib
Gross Weight Ib 81.6
Refrigerant R410A
Refrigerant Charge oz 35.3
Connection Pipe Length ft 24.6
Connection Pipe Gas Additional Charge oz/ft 0.2
Outer Diameter Liquid Pipe inch 1/4
Outer Diameter Gas Pipe inch 3/8
Max Distance Height ft 32.8
Max Distance Length ft 49.2
Note: The connection pipe applies metric diameter.
MPa 4.3
MPa 2.5
3VIR09HP115V1AO
ZHUHAI LANDA
COMPRESSOR CO.,LTD
33 25/64 X 23 30/64 X 12 38/64
34 36/64 X 14 11/64 X 24 51/64
34 44/64 X 14 19/64 X 25 25/64
75
Technical Information
3
Page 7
2. Specications
Service Manual
Model
Product Code CB385002900
Power
Supply
Power Supply Mode outdoor
Cooling Capacity Btu/h 9100
Heating Capacity W 3224
Cooling Power Input W 618
Heating Power Input W 860
Cooling Power Current A 3.0
Heating Power Current A 4.2
Rated Input W 1650
Rated Cooling Current A 7.2
Rated Heating Current A 7.2
Air Flow Volume(SS/H/MH/M/ML/L/SL/SM) CFM
Dehumidifying V
EER (Btu/h)/W 14.70
COP (Btu/h)/W 12.79
SEER 25.3
HSPF 11.2
Application Area yd
Rated Voltage V~ 208/230
Rated Frequency Hz 60
Phases 1
olume Pint/h 1.69
2
3VIR09HP230V1A
353/324/294/265/235/206/194/129
14.35-21.53
Indoor
Unit
Model of indoor unit
Indoor Unit Product Code CB385N02900
Fan Type Cross-ow
Fan Diameter Length(DXL) mm Φ98X630
Cooling Speed r/min
Heating Speed r/min
Fan Motor Power Output W 15
Fan Motor RLA A 0.22
Fan Motor Capacitor μF /
Evaporator Form Aluminum Fin-copper Tube
Evaporator Pipe Diameter mm Φ5
Evaporator Row-n Gap mm 2-1.4
Evaporator Coil Length (LXDXW) mm
Swing Motor Model MP24AK/MP24BA/MP24HF
Swing Motor Power Output W 1.5/1.5/1.5
Fuse Current A 3.15
Sound Pressure Level dB (A)
Sound Power Level dB (A)
Dimension (WXHXD) inch 32 31/64 X 11 34/64 X 7 46/64
Dimension of Carton Box (LXWXH) inch 34 16/64 X 13 47/64 X 10 8/64
Dimension of Package (LXWXH) inch 34 29/64 X 14 24/64 X 10 35/64
Net Weight Ib 20.9
Gross Weight Ib 25.4
3VIR09HP230V1AH
1300/1200/1100/1000/900/800/750/500
1300/1200/1100/1000/900/850/800/-
634 X 22.8 X 304.8
Cooling: 40/37/35/32/29/26/25/22
Heating: 41/38/36/33/29/27/25/
Cooling: 50/47/45/42/39/36/35/32
Heating: 51/48/46/43/39/37/35/
-
-
4
Technical Information
Page 8
2. Specications
Service Manual
Outdoor Unit Model
Outdoor Unit Product Code CB385W02900
Compressor Manufacturer
Compressor Model QXF-B103zF190A
Compressor Oil FW68DA or equivalent
Compressor Type Rotary
Compressor LRA. A /
Compressor RLA A 4.7
Compressor Power Input W 860
Compressor Overload Protector HPC115/95U1 KSD115ºC
Throttling Method Capillary
Set Temperature Range ºF 61~86
Cooling Operation Ambient Temperature Range ºF -20~122
Heating Operation Ambient Temperature Range ºF -22~86
Condenser Form Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7
Condenser Rows-n Gap mm 2-1.4
Condenser Coil Length (LXDXW) mm 742 X 38.1 X 550
Fan Motor Speed rpm 900
Outdoor
Unit
Connection
Pipe
The above data is subject to change without notice. Please refer to the nameplate of the unit.
Fan Motor Power Output W 30
Fan Motor RLA A 0.4
Fan Motor Capacitor μF /
Outdoor Unit Air Flow Volume CFM 1295
Fan Type Axial-ow
Fan Diameter mm Φ438
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IPX4
Permissible Excessive Operating Pressure for
the Discharge Side
Permissible Excessive Operating Pressure for
the Suction Side
Sound Pressure Level (H/M/L) dB (A) 52/-/-
Sound Power Level (H/M/L) dB (A) 62/-/-
Dimension(WXHXD) inch 33 25/64 X 23 30/64 X 12 38/64
Dimension of Carton Box (LXWXH) inch
Dimension of Package(LXWXH) inch
eight Ib 73.9
Net W
Gross Weight Ib 80.5
Refrigerant R410A
Refrigerant Charge oz 36.3
Connection Pipe Length ft 24.6
Connection Pipe Gas Additional Charge oz/ft 0.2
Outer Diameter Liquid Pipe inch 1/4
Outer Diameter Gas Pipe inch 3/8
Max Distance Height ft 32.8
Max Distance Length ft 49.2
Note: The connection pipe applies metric diameter.
MPa 4.3
MPa 2.5
3VIR09HP230V1AO
ZHUHAI LANDA
COMPRESSOR CO.,LTD
34 36/64 X 14 11/64 X 24 51/64
34 44/64 X 14 19/64 X 25 25/64
Technical Information
5
Page 9
2. Specications
Service Manual
Model
Product Code CB385006200
Power
Supply
Power Supply Mode Outdoor
Cooling Capacity Btu/h 12100
Heating Capacity W 12100
Cooling Power Input W 931
Heating Power Input W 982
Cooling Power Current A 8.26
Heating Power Current A 8.53
Rated Input W 1500
Rated Cooling Current A 12.45
Rated Heating Current A 13.1
Air Flow Volume(SS/H/MH/M/ML/L/SL/SM) CFM 400/365/330/288/265/247/230/212
Dehumidifying Volume Pint/h 2.96
EER (Btu/h)/W 13.00
COP (Btu/h)/W 12.32
SEER 25
HSPF 11.5
Application Area yd
Rated Voltage V~ 115
Rated Frequency Hz 60
Phases 1
2
3VIR12HP115V1A
19-29
Indoor
Unit
Model of indoor unit
Indoor Unit Product Code CB385N06200
Fan Type Cross-ow
Fan Diameter Length(DXL) mm Φ98X630
Cooling Speed r/min 1450/1200/1120/1050/980/920/750/500
Heating Speed r/min 1450/1200/1140/1080/1020/960/900/-
Fan Motor Power Output W 15
Fan Motor RLA A 0.30
Fan Motor Capacitor μF /
Evaporator Form Aluminum Fin-copper Tube
Evaporator Pipe Diameter mm Φ5
Evaporator Row-n Gap mm 2-1.4
Evaporator Coil Length (LXDXW) mm
Swing Motor Model MP24BA/MP24AK/MP24HF
Swing Motor Power Output W 1.5/1.5/1.5
Fuse Current A 3.15
Sound Pressure Level dB (A)
Sound Power Level dB (A)
Dimension (WXHXD) inch 32 31/64 X 11 34/64 X 7 46/64
Dimension of Carton Box (LXWXH) inch 34 16/64 X 13 47/64 X 10 8/64
Dimension of Package (LXWXH) inch 34 29/64 X 14 24/64 X 10 35/64
Net Weight Ib 20.9
Gross Weight Ib 25.4
3VIR12HP115V1AH
634X22.8X304.8
Cooling: 43/38/35/33/31/29/25/20
Heating: 44/38/36/34/32/30/28/-
Cooling: 53/48/45/43/41/39/35/30
Heating: 54/48/46/44/42/40/38/-
6
Technical Information
Page 10
2. Specications
Service Manual
Outdoor Unit Model
Outdoor Unit Product Code CB385W06200
Compressor Manufacturer
Compressor Model QXF-B103zF190A
Compressor Oil FW68DA
Compressor Type Rotary
Compressor LRA. A 25
Compressor RLA A 15
Compressor Power Input W 800
Compressor Overload Protector
Throttling Method Electron expansion valve
Set Temperature Range ºF 61~86
Cooling Operation Ambient Temperature Range ºF -13~122
Heating Operation Ambient Temperature Range ºF -22~86
Condenser Form Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7.94
Condenser Rows-n Gap mm 2.5-1.5
Condenser Coil Length (LXDXW) mm 733X57X550
Fan Motor Speed rpm 900
Outdoor
Unit
Connection
Pipe
The above data is subject to change without notice. Please refer to the nameplate of the unit.
Fan Motor Power Output W 30
Fan Motor RLA A 0.50
Fan Motor Capacitor μF /
Outdoor Unit Air Flow Volume CFM 1412
Fan Type Axial-ow
Fan Diameter mm Φ438
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IPX4
Permissible Excessive Operating Pressure for
the Discharge Side
Permissible Excessive Operating Pressure for
the Suction Side
Sound Pressure Level (H/M/L) dB (A) 54/-/-
Sound Power Level (H/M/L) dB (A) 64/-/-
Dimension(WXHXD) inch 35 25/64 X 23 30/64 X 14 56/64
Dimension of Carton Box (LXWXH) inch
Dimension of Package(LXWXH) inch 37 21/64 X 16 34/64 X 25 25/64
Net Weight Ib 87.1
Gross Weight Ib 93.7
Refrigerant R410A
Refrigerant Charge oz 47.3
Connection Pipe Length ft 24.6
Connection Pipe Gas Additional Charge oz/ft 0.2
Outer Diameter Liquid Pipe inch 1/4
Outer Diameter Gas Pipe inch 1/2
Max Distance Height ft 32.8
Max Distance Length ft 65.6
Note: The connection pipe applies metric diameter.
MPa 4.3
MPa 2.5
3VIR12HP115V1AO
ZHUHAI LANDA
COMPRESSOR CO.,LTD
/
37 13/64 X 16 27/64 X 24 51/64
Technical Information
7
Page 11
2. Specications
Service Manual
Model
Product Code CB385004000
Power
Supply
Power Supply Mode outdoor
Cooling Capacity Btu/h 12000
Heating Capacity W 12000
Cooling Power Input W 923
Heating Power Input W 974
Cooling Power Current A 4.05
Heating Power Current A 4.38
Rated Input W 1500
Rated Current A 7.5
Air Flow Volume(SS/H/MH/M/ML/L/SL/SM) CFM 400/365/330/288/265/247/230/212
Dehumidifying Volume Pint/h 2.96
EER (Btu/h)/W 13.00
COP (Btu/h)/W 12.32
SEER 25
HSPF 11.5
Application Area yd
Rated Voltage V~ 208/230
Rated Frequency Hz 60
Phases 1
2
3VIR12HP230V1A
19.14-28.70
Indoor
Unit
Model of indoor unit
Indoor Unit Product Code CB385N04000
Fan Type Cross-ow
Fan Diameter Length(DXL) mm Φ98X630
Cooling Speed r/min 1450/1200/1120/1050/980/920/750/500
Heating Speed r/min 1450/1200/1140/1080/1020/960/900/-
Fan Motor Power Output W 15
Fan Motor RLA A 0.20
Fan Motor Capacitor μF /
Evaporator Form Aluminum Fin-copper Tube
Evaporator Pipe Diameter mm Φ5
Evaporator Row-n Gap mm 2-1.4
Evaporator Coil Length (LXDXW) mm 634X22.8X304.8
Swing Motor Model MP24BA/MP24AK/MP24HF
Swing Motor Power Output W
Fuse Current A 3.15
Sound Pressure Level dB (A)
Sound Power Level dB (A)
Dimension (WXHXD) inch 32 31/64 X 11 34/64 X 7 46/64
Dimension of Carton Box (LXWXH) inch 34 16/64 X 13 47/64 X 10 8/64
Dimension of Package (LXWXH) inch 34 29/64 X 14 24/64 X 10 35/64
Net Weight Ib 20.9
Gross Weight Ib 25.4
3VIR12HP230V1AH
1.5/1.5/1.5
Cooling: 43/38/35/33/31/29/27/23
Heating: 44/38/36/34/32/30/28/-
Cooling: 53/48/45/43/41/39/37/33
Heating: 54/48/46/44/42/40/38/-
8
Technical Information
Page 12
2. Specications
Service Manual
Outdoor Unit Model
Outdoor Unit Product Code CB385W04000
Compressor Manufacturer
Compressor Model QXF-B103zF190A
Compressor Oil FW68DA
Compressor Type Rotary
Compressor LRA. A 25
Compressor RLA A 6.60
Compressor Power Input W 800
Compressor Overload Protector
Throttling Method Electron expansion valve
Set Temperature Range ºF 61~86
Cooling Operation Ambient Temperature Range ºF -20~122
Heating Operation Ambient Temperature Range ºF -22~86
Condenser Form Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7.94
Condenser Rows-n Gap mm 2.5-1.4
Condenser Coil Length (LXDXW) mm 733X57X550
Fan Motor Speed rpm 900
Outdoor
Unit
Connection
Pipe
The above data is subject to change without notice. Please refer to the nameplate of the unit.
Fan Motor Power Output W 30
Fan Motor RLA A 0.37
Fan Motor Capacitor μF /
Outdoor Unit Air Flow Volume CFM 1412
Fan Type Axial-ow
Fan Diameter mm Φ438
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IPX4
Permissible Excessive Operating Pressure for
the Discharge Side
Permissible Excessive Operating Pressure for
the Suction Side
Sound Pressure Level (H/M/L) dB (A) 52/-/-
Sound Power Level (H/M/L) dB (A) 62/-/-
Dimension(WXHXD) inch 35 25/64 X 23 30/64 X 14 56/64
Dimension of Carton Box (LXWXH) inch
Dimension of Package(LXWXH) inch 37 21/64 X 16 34/64 X 25 25/64
Net Weight Ib 83.8
Gross Weight Ib 90.4
Refrigerant R410A
Refrigerant Charge oz 47.3
Connection Pipe Length ft 24.6
Connection Pipe Gas Additional Charge oz/ft 0.2
Outer Diameter Liquid Pipe inch 1/4
Outer Diameter Gas Pipe inch 1/2
Max Distance Height ft 32.8
Max Distance Length ft 65.6
Note: The connection pipe applies metric diameter.
MPa 4.3
MPa 2.5
3VIR12HP230V1AO
ZHUHAI LANDA
COMPRESSOR CO.,LTD
/
37 13/64 X 16 27/64 X 24 51/64
Technical Information
9
Page 13
2. Specications
Service Manual
Model
Product Code CB385004400
Power
Supply
Power Supply Mode Outdoor
Cooling Capacity Btu/h 18000
Heating Capacity W 18200
Cooling Power Input W 1384
Heating Power Input W 1460
Cooling Power Current A 6
Heating Power Current A 6.4
Rated Input W 2600
Rated Current A 11
Air Flow Volume(SS/H/MH/M/ML/L/SL/SM) CFM 618/530/471/441/412/383/353/294
Dehumidifying Volume Pint/h 3.8
EER (Btu/h)/W 13
COP (Btu/h)/W 12.45
SEER 23
HSPF 11
Application Area yd
Rated Voltage V~ 208/230
Rated Frequency Hz 60
Phases 1
2
3VIR18HP230V1A
28-41
Indoor
Unit
Model of indoor unit
Indoor Unit Product Code CB385N04400
Fan Type Cross-ow
Fan Diameter Length(DXL) mm Φ106X739
Cooling Speed r/min 1400/1200/1120/1050/980/860/750/-
Heating Speed r/min 1400/1200/1120/1050/950/850/750/-
Fan Motor Power Output W 60
Fan Motor RLA A 0.25
Fan Motor Capacitor μF /
Evaporator Form Aluminum Fin-copper Tube
Evaporator Pipe Diameter mm Φ7
Evaporator Row-n Gap mm 2-1.4
Evaporator Coil Length (LXDXW) mm 745X22.8X342.9
Swing Motor Model MP24BA/MP24AK/MP24HF
Swing Motor Power Output W
Fuse Current A 3.15
Sound Pressure Level dB (A)
Sound Power Level dB (A)
Dimension (WXHXD) inch 38 42/64 X 12 16/64 X 8 45/64
Dimension of Carton Box (LXWXH) inch 40 58/64 X 14 54/64 X 11 19/64
Dimension of Package (LXWXH) inch 41 7/64 X 15 10/64 X 11 44/64
Net Weight Ib 29.8
Gross Weight Ib 35.3
3VIR18HP230V1AH
1.5/1.5/1.5
Cooling: 46/42/40/38/36/34/31/26
Heating: 49/42/41/39/36/32/28/-
Cooling: 56/52/50/48/46/44/41/36
Heating: 59/52/51/49/46/42/38/-
10
Technical Information
Page 14
2. Specications
Service Manual
Outdoor
Unit
Connection
Pipe
Outdoor Unit Model
Outdoor Unit Product Code CB385W04400
Compressor Manufacturer
Compressor Model QXA-B141zF030A
Compressor Oil RB68EP
Compressor Type Rotary
Compressor LRA. A 25
Compressor RLA A 10.4
Compressor Power Input W 1440
Compressor Overload Protector
Throttling Method Electron expansion valve
Set Temperature Range ºF 61~86
Cooling Operation Ambient Temperature Range ºF -20~122
Heating Operation Ambient Temperature Range ºF -22~86
Condenser Form Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7
Condenser Rows-n Gap mm 2-1.4
Condenser Coil Length (LXDXW) mm 935X38.1X660
Fan Motor Speed rpm 820
Fan Motor Power Output W 60
Fan Motor RLA A 0.45
Fan Motor Capacitor μF /
Outdoor Unit Air Flow Volume CFM 1883
Fan Type Axial-ow
Fan Diameter mm Φ520
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IPX4
Permissible Excessive Operating Pressure for
the Discharge Side
Permissible Excessive Operating Pressure for
the Suction Side
Sound Pressure Level (H/M/L) dB (A) 57/-/-
Sound Power Level (H/M/L) dB (A) 67/-/-
Dimension(WXHXD) inch
Dimension of Carton Box (LXWXH) inch 40 25/64 X 17 58/64 X 28 60/64
Dimension of Package(LXWXH) inch 40 33/64 X 18 2/64 X 29 34/64
Net Weight Ib 103.6
Gross Weight Ib 113.6
Refrigerant R410A
Refrigerant Charge oz 56.4
Connection Pipe Length ft 24.6
Connection Pipe Gas Additional Charge oz/ft 0.5
Outer Diameter Liquid Pipe inch 1/4
Outer Diameter Gas Pipe inch 5/8
Max Distance Height ft 65.6
Max Distance Length ft 98.4
Note: The connection pipe applies metric diameter.
MPa 4.3
MPa 2.5
3VIR18HP230V1AO
ZHUHAI LANDA
COMPRESSOR CO.,LTD
1NT11L-6233 or KSD115oC or
HPC115/95U1
37 63/64 X 27 36/64 X 15 38/64
The above data is subject to change without notice. Please refer to the nameplate of the unit.
Technical Information
11
Page 15
2. Specications
Service Manual
Model
Product Code CB385002600
Power
Supply
Power Supply Mode outdoor
Cooling Capacity Btu/h 22000
Heating Capacity W 24000
Cooling Power Input W 1692
Heating Power Input W 1846
Cooling Power Current A 7.5
Heating Power Current A 8
Rated Input W 3100
Rated Current A 14.5
Air Flow Volume(SS/H/MH/M/ML/L/SL/SM) CFM 824/589/571/500/471/441/400/-
Dehumidifying Volume Pint/h 5.07
EER (Btu/h)/W 13.00
COP (Btu/h)/W 13.00
SEER 23
HSPF 11
Application Area yd
Rated Voltage V~ 208/230
Rated Frequency Hz 60
Phases 1
2
3VIR24HP230V1A
32.29-50.23
Indoor
Unit
Model of indoor unit
Indoor Unit Product Code CB385N02600
Fan Type Cross-ow
Fan Diameter Length(DXL) mm Φ108*830
Cooling Speed r/min 1500/1150/1100/1000/950/900/850/-
Heating Speed r/min 1500/1200/1100/1050/1000/950/900/-
Fan Motor Power Output W 60
Fan Motor RLA A 0.40
Fan Motor Capacitor μF /
Evaporator Form Aluminum Fin-copper Tube
Evaporator Pipe Diameter mm Φ7
Evaporator Row-n Gap mm 2-1.4
Evaporator Coil Length (LXDXW) mm 845X25.4X342.9
Swing Motor Model MP24HF/MP24AK/MP24HF
Swing Motor Power Output W
Fuse Current A 3.15
Sound Pressure Level dB (A)
Sound Power Level dB (A)
Dimension (WXHXD) inch 42 21/64 X 13 7/64 X 9 44/64
Dimension of Carton Box (LXWXH) inch 44 26/64 X 15 63/64 X 12 46/64
Dimension of Package (LXWXH) inch 44 39/64 X 16 19/64 X 13 7/64
Net Weight Ib 35.3
Gross Weight Ib 41.9
3VIR24HP230V1AH
1.5/1.5/1.5
Cooling: 53/45/44/41/39/37/35/Heating: 51/45/42/40/39/37/36/-
Cooling: 63/55/54/51/49/47/45/Heating: 61/55/52/50/49/47/46/-
12
Technical Information
Page 16
2. Specications
Service Manual
Outdoor Unit Model
Outdoor Unit Product Code CB385W02600
Compressor Manufacturer
Compressor Model QXFS-B181zX030AA
Compressor Oil FW68DA
Compressor Type Twin Rotary
Compressor LRA. A 25
Compressor RLA A 10.68
Compressor Power Input W 1610
Compressor Overload Protector HPC115/95U1 KSD115
Throttling Method Electron expansion valve
Set Temperature Range ºF 61~86
Cooling Operation Ambient Temperature Range ºF -20~122
Heating Operation Ambient Temperature Range ºF -22~86
Condenser Form Aluminum Fin-copper Tube
Condenser Pipe Diameter mm Φ7.94
Condenser Rows-n Gap mm 2-Φ8
Condenser Coil Length (LXDXW) mm 952×38.1×748
Fan Motor Speed rpm 800
Outdoor
Unit
Connection
Pipe
The above data is subject to change without notice. Please refer to the nameplate of the unit.
Fan Motor Power Output W 90
Fan Motor RLA A 0.7
Fan Motor Capacitor μF /
Outdoor Unit Air Flow Volume CFM 2354
Fan Type Axial-ow
Fan Diameter mm Φ550
Defrosting Method Automatic Defrosting
Climate Type T1
Isolation I
Moisture Protection IPX4
Permissible Excessive Operating Pressure for
the Discharge Side
Permissible Excessive Operating Pressure for
the Suction Side
Sound Pressure Level (H/M/L) dB (A) 59/-/-
Sound Power Level (H/M/L) dB (A) 69/-/-
Dimension(WXHXD) inch 39 31/64 X 31 7/64 X 16 52/64
Dimension of Carton Box (LXWXH) inch 42 33/64 X 19 6/64 X 33 5/64
Dimension of Package(LXWXH) inch 42 41/64 X 19 14/64 X 33 42/64
Net Weight Ib 124.6
Gross Weight Ib 135.6
Refrigerant R410A
Refrigerant Charge oz 63.5
Connection Pipe Length ft 24.6
Connection Pipe Gas Additional Charge oz/ft 0.5
Outer Diameter Liquid Pipe inch 1/4
Outer Diameter Gas Pipe inch 5/8
Max Distance Height ft 65.6
Max Distance Length ft 98.4
Note: The connection pipe applies metric diameter.
MPa 4.3
MPa 2.5
3VIR24HP230V1AO
ZHUHAI LANDA
COMPRESSOR CO.,LTD
℃
Technical Information
13
Page 17
Outdoor temp.(°F)
Capacity ratio (%)
160
160
86
2. Specications
120%
Capacity ratio (%)
140%
86
Capacity ratio (%)
Outdoor temp.(°F) Outdoor temp.(°F)
286
Capacity ratio (%)
Outdoor temp.(°F) Outdoor temp.(°F)
140
2.2 Capacity Variation Ratio According to Temperature
09K
Cooling:
Heating:
Service Manual
140
120
100
80
60
40
20
0
-20-10 0517 23 32 41 50 57 67 75 86 95 104113 122
12K
100%
80%
60%
40%
20%
Cooling:
Conditions
Indoor:DB
Outdoor:DB95°F
Indoor air flow:Super High
Pipe length:
0%
Conditions
Indoor:DB
Outdoor:DB95°F
Indoor air flow:Super High
Pipe length:
80°F
24.6 ft
/WB66.9
80°F
24.6ft
°F
-20-10 0517 23 32 41 50 57 67 75 86 95 104113 122
18K
Outdoor temp.(°F) Outdoor temp.(°F)
Cooling:
120
100
80
60
Conditions
40
20
0
-20-10 0517 23 31 41 50 57 67 75 86 95 104112 122
80°F
Indoor: DB
Outdoor: DB95°F
Indoor air flow: Super High
Pipe length:
/WB66.9
24.6 ft
°F
/WB66.9
140
120
100
80
°F
60
Capacity ratio (%)
40
20
0
-22-13 -5 0510 17 20 24 32 41 43 47 53 59 64 70 75 78
Outdoor temp.(°F)
Conditions
Indoor: DB70°F
Outdoor: DB19.94°F/WB19.04°F
Indoor air flow: Super High
Pipe length: 24.6 ft
Heating:
120%
100%
80%
60%
40%
Capacity ratio (%)
20%
0%
Conditions
Indoor:DB
Outdoor:DB19.94°F/WB19.04
Indoor air flow:Super High
Pipe length:
70°F
24.6 ft
°F
-22-13 -5 0510 17 20 24 32 41 43 47 53 59 64 70 75 78
Heating:
140
120
100
80
60
Conditions
40
Capacity ratio (%)
20
0
-22-13 -5 0510 17 20 24 32 41 43 47 53 59 64 70 75 78 86
70°F
Indoor: DB
Outdoor: DB19.94°F/WB19.04°F
Indoor air flow: Super High
Pipe length:
24.6 ft
14
24K
Cooling:
120%
100%
80%
60%
40%
20%
0%
-20-4514 23 32 41 50 59 68 77 86 95 109 118 122
Conditions
Indoor: DB
Outdoor: DB95°F
Indoor air flow: Super High
Pipe length:
80°F
24.6 ft
/WB66.9
°F
Heating:
120%
100%
80%
60%
40%
Capacity ratio (%)
20%
Conditions
Indoor: DB
Outdoor: DB19.94°F/WB19.04°F
Indoor air flow: Super High
Pipe length:
0%
-22-7.65 14 17.63235.6 46.45964.469.875.
Technical Information
70°F
24.6 ft
Page 18
Indoor side noise when blowing
Indoor fan motor rotating speed
Noice/dB(A)
Indoor side noise when blowing
Indoor fan motor rotating speed
Indoor side noise when blowing
Indoor fan motor rotating speed
Noice/dB(A)
2. Specications
Indoor side noise when blowing
Indoor fan motor rotating speed
Noice/dB(A)
Service Manual
2.3 Cooling and Heating Data Sheet in Rated Frequency
Cooling:
Rated cooling condition(°F)
(DB/WB)
Indoor Outdoor P (MPa) T1 (°F) T2 (°F)
80/66.9 95/- 09K 0.9~1.1 53.6 to 57.2 158 to 104 Super High High
80/66.9 95/- 12K 0.9~1.1 53.6 to 57.2 158 to 104 Super High High
80/66.9 95/- 18K 0.9~1.1 53.6 to 57.2 176 to 104 Super High High
80/66.9 95/- 24K 0.9~1.1 53.6 to 57.2 176 to 104 Super High High
Model
Heating:
Rated heating condition(°F)
(DB/WB)
Indoor Outdoor P (MPa) T1 (°F) T2 (°F)
70/- 19.94/19.04 09K 2.2~2.4 158 to 95 35.6 to 39.2 Super High High
70/- 19.94/19.04 12K 2.2~2.4 158 to 95 35.6 to 39.2 Super High High
70/- 19.94/19.04 18K 2.5~2.7 158 to 104 33.8 to 41.0 Super High High
Model
Pressure of gas pipe connecting
indoor and outdoor unit
Pressure of gas pipe connecting
indoor and outdoor unit
Inlet and outlet pipe temperature of
heat exchanger
Inlet and outlet pipe temperature of
heat exchanger
Fan speed of
indoor unit
Fan speed of
indoor unit
Fan speed of
outdoor unit
Fan speed of
outdoor unit
70/- 19.94/19.04 24K 2.5~2.7 158 to 104 33.8 to 41.0 Super High High
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.
2.4 Noise Curve
09K
45
40
35
30
25
20
Cooling
Heating
SS HMHM ML LSLSM
12K
45
40
35
Noice/dB(A)
30
25
20
Heating
SS HMHM ML LSLSM
Cooling
50
45
18K
40
35
30
25
20
SS HMHM ML LSLSM
Technical Information
Heating
Cooling
24K
55
50
45
40
Heating
35
SS HMHM ML LSL
Cooling
15
Page 19
3. Outline Dimension Diagram
W
W3W2W1
1 11/16
7 1/64* 3 32/64*
W3W2W1
3.1 Indoor Unit
W3W2W1
Service Manual
D
H
1 11/16
4 36/64*
Φ2 11/64
1 37/64
1 11/16
Φ2 11/64
6 7/64*
1 37/64
Φ2 3/4
09K & 12K
18K
24K
6 57/64*
Model W H D W1 W2 W3
09K & 12K 32 31/64 11 34/64 7 46/64 4 29/64 21 22/64 6 44/64
18K 38 42/64 12 16/64 8 45/64 4 53/64 27 55/64 5 63/64
24K
* Recommending distances
42 21/64 13 7/64 9 44/64 7 14/64 27 55/64 7 16/64
16
2 23/64*
Unit:inch
Technical Information
Page 20
Unit:inch
10 8/64
30 45/64
3. Outline Dimension Diagram
Service Manual
3.2 Outdoor Unit
3VIR09HP115V1AO GWC09AGC-D3DNA1C/O 3VIR09HP230V1AO
23 30/64
33 25/64
21 17/64
32 12/64
12 38/64
11 17/64
3VIR12HP230V1AO 3VIR12HP115V1AO
12
23 30/64
Technical Information
35 25/64
21 2/3
14 56/64
13 32/64
Unit:inch
17
Page 21
36 7/32
3. Outline Dimension Diagram
3VIR18HP230V1AO
Service Manual
13 26/64
35
37 63/64
22
27 36/64
15 38/64
14 21/64
3VIR24HP230V1AO
14 37/64
15 9/16
39 31/64
24
31 7/64
16 13/16
Unit:inch
18
Technical Information
Page 22
4. Refrigerant System Diagram
Service Manual
Cooling and heating model
Indoor unit
Heat
exchanger
(evaporator)
Gas pipe
side
Valve
Liquid pipe
side
Valve
Discharge
Suction
Compressor
Strainer
Outdoor unit
4-Way valve
Accumlator
Capillary
Heat
exchanger
(condenser)
Strainer
COOLING
HEATING
Connection pipe speci ication:
Liquid pipe:1/4" (09K & 12K)
Gas pipe:3/8" (09K)
Gas pipe:1/2" (12K)
Technical Information
19
Page 23
4. Refrigerant System Diagram
Cooling and heating model
Service Manual
Indoor unit
Heat
exchanger
(evaporator)
Gas pipe
side
Valve
Liquid pipe
side
Valve
Compressor
Strainer
Discharge
Suction
Electron
expansion
valve
Outdoor unit
4-Way valve
Accumlator
Capillary
Heat
exchanger
(condenser)
Strainer
COOLING
HEATING
Connection pipe specication:
Liquid pipe:1/4"
Gas pipe:5/8" (18K)
Indoor unit
Heat
exchanger
(evaporator)
Gas pipe
side
Valve
Liquid pipe
side
Valve
Outdoor unit
4-Way valve
Discharge
Suction
Compressor
Strainer Strainer
Accumlator
Electron
expansion
valve
Heat
exchanger
(condenser)
20
COOLING
HEATING
Connection pipe specication:
Liquid pipe:1/4"
Gas pipe: 5/8" (24K)
Technical Information
Page 24
5. Electrical Part
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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 Grounding wire
YEGN Yellow/Green BK Black / /
VT Violet OG Orange / /
Service Manual
Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model.
● Indoor Unit
3VIR09HP115V1AH 3VIR09HP230V1AH
3VIR12HP230V1AH 3VIR12HP115V1AH
600007064269
21
Technical Information
Page 25
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Service Manual
3VIR18HP230V1AH
3VIR24HP230V1AH
600007064197
Technical Information
22
Page 26
5. Electrical Part
● Outdoor Unit
3VIR09HP230V1AO
Service Manual
3VIR09HP115V1AO
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These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit.
Technical Information
Page 27
5. Electrical Part
3VIR12HP230V1AO
Service Manual
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24
These wiring diagrams are subject to change without notice; please refer to the one supplied with the unit.
Technical Information
Page 28
5. Electrical Part
3
45
15
5.2 PCB Printed Diagram
Indoor Unit
Service Manual
1
14
67
8
9
10
11
12
No. Name No. Name
1 Fuse 9 Up&down swing interface 1
2 Live wire 10 Interface of display board
3 Neutral wire 11 Interface of temperature sensor
4 Communication wire 12 Door control
5 DC fan interface 13 Wired controller
6 Interface of cold plasma 14 Earthing wire
7 Left&right swing interface 15 Terminal of live wire
8 Up&down swing interface 2
13
25
Technical Information
Page 29
No. Name
1Interface of compressor wire
2Reactor wiring terminal 2
3Reactor wiring terminal 1
4Terminal of chassis electric heater
5
6
4-way valve terminal
7Neutral wire
Grounding wire
8Communication wire
9
Live wire
10 Terminal of electronic expansion valve
11 Interface of temperature sensor
12 Overload interface of compressor
13
Terminal of outdoor fan
● Top view
5. Electrical Part
3VIR09HP230V1AO 3VIR12HP230V1AO
Service Manual
13
3
13
4
5
2
6
7
1
8
9
12
No. Name No. Name
1 Interface of compressor wire 8 Communication wire
2 Reactor wiring terminal 2 9 Live wire
3 Reactor wiring terminal 1 10 Terminal of electronic expansion valve
4 Terminal of chassis electric heater 11 Interface of temperature sensor
5 4-way valve terminal 12 Overload interface of compressor
6 Grounding wire 13 Terminal of outdoor fan
7 Neutral wire
1011
26
Technical Information
Page 30
5. Electrical Part
●Top view
1112
No.Name
wire terminal
5
4
Terminal of power supply live
6
14-way valve terminal
2Terminal of outdoor fan
3Grounding wire
Terminal of power supply
neutral wire
Communication wire
7
Terminal of outdoor unit
temperature sensor
8
Compressor overload
protection terminal
9
Interface of electronic
expansion
10 Compressor wiring terminal
11 Reactor wiring terminal
12
Interface of electric heating for
chassis
Service Manual
3VIR09HP115V1AO 3VIR12HP115V1AO
6
5
4
3
879
10
2
1
No. Name No. Name
1 4-way valve terminal 7 Terminal of outdoor unit temperature sensor
2 Terminal of outdoor fan 8 Compressor overload protection terminal
3 Grounding wire 9 Terminal of electronic expansion valve
4 Terminal of power supply live wire 10 Compressor wiring terminal
5 Terminal of power supply neutral wire 11 Reactor wiring terminal
6 Communication wire 12 Terminal of electric heating for chassis
Technical Information
27
Page 31
5. Electrical Part
21346758910
11
Service Manual
3VIR18HP230V1AO 3VIR24HP230V1AO
12
13
14
No. Name No. Name
1 Compressor three phase input terminal 9 2-way valve terminal
2 Terminal of system high pressure protection 10 Terminal of electric heating for compressor
3 Compressor overload protection terminal 11 Terminal of electric heating for chassis
4 Terminal of temperature sensor 12 Communication terminal
5 Terminal of electronic expansion valve 13 Terminal of live wire
6 Terminal of system low pressure protection 14 Terminal of earthing wire
7 Terminal of fan 15 Terminal of netural wire
8 4-way valve terminal
15
28
Technical Information
Page 32
6. Function and Control
Service Manual
6.1 Remote Controller Introduction of YAP1F7F(WiFi)
Notice:
1.This is a general use remote controller. It could be used for the air conditioner with multifunction. For the functions which the
model doesn't have, if press the corresponding button on the remote controller, the unit will keep the original running status.
2.After putting through the power, the air conditioner will give out a sound. Operation indicator "
colour is different for different models). After that, you can operate the air condition-er by using remote controller.
3.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 condition-er will give out a “ di ” sound, which means the signal has been sent to the air conditioner.
4.As for the models with functions of WiFi or wired controller, the indoor unit must has been controlled by standard remote
controller under auto mode rst, and then the function of adjustable temperature under auto mode can be realized by APP or
the wired controller.
5.This remote controller can adjust the temperature under auto mode. When matching with the unit which is without the
function of adjustable temperature under auto mode, the set temperature under auto mode may be invalid, or the displayed set
temperature on the unit is not same as that on the remote controller under auto mode.
● When selecting dry mode, the air conditioner operates at low
speed under dry mode. Under dry mode, fan speed can't be
adjusted. Press "
"/" " button to adjust fan blowing angle.
● When selecting fan mode, the air conditioner will only blow
fan, no cooling and no heating. Press "FAN" button to adjust
fan speed. Press"
"/" " button to adjust fan blowing angle.
When selecting heat mode, the air conditioner operates under
heat mode. Press "▲" or "▼" button to adjust set temperature.
Press "FAN" button to adjust fan speed. Press "
ON/OFF
to adjust fan blowing angle.
● When selecting heating mode, the air conditioner operates
under heat mode. Press "
temperature. Press "FAN" button to adjust fan speed. Press "
/ "
"button to adjust fan blowing angle. (Cooling only unit won't
receive heating mode signal. If setting heat mode with remote
MODE
TURBO
FAN
controller, press ON/OFF button can’t start up the unit).
Notice:
I FEEL
LIGHT
T-ON T-OFF
CLOCK
TEMP
SLEEP
WiFi
● For preventing cold air, after starting up heat mode,indoor unit
will delay 1~5 minutes to blow air (Actual delay time depends on
indoor ambient temperature).
● Set temperature range from remote controller: 16~30
o
86
F).
● Under auto mode, temperature can be displayed;Under auto
mode, set temperature can be adjusted.
button
● This mode indicator is not available for some models.
" is ON (red indicator, the
" / " " button
" or " "button to adjust set
o
C(61-
"
Press this button to turn on the unit. Press this button again to
turn off the unit.
button
Press this button to select your required operation mode :
● When selecting auto mode, air conditioner will operate
automatically ac
cording to the sensed temperature. Set
temperature can be adjusted and will be displayed as
well. Press "FAN" button can adjust fan speed.
Press " "/" " button can adjust fan blowing angle.
● After selecting cool mode, air conditioner will operate
under cool mode. Press "
" or " " button to adjust set
temperature. Press "FAN" button to adjust fan speed.
Press"
"/" " button to adjust fan blowing angle.
Technical Information
button
This button is used for setting Fan Speed in the sequence that
goes from AUTO,
, , , , , , then back to
Auto.
*Note:
● Under AUTO speed, air conditioner will select proper fan speed
automatically according to factory default setting.
● It's low fan speed under dry mode.
● X-FAN function Hold fan speed button for 2s in cool or dry
mode, the icon "
" is displayed and the indoor fan will continue
operation for a few minutes in order to dry the indoor unit even
though you have turned off the unit. After energization, X-FAN
OFF is defaulted. X-FAN is not available in auto, fan or heat mode.
● This function indicates that moisture on evaporator of indoor
unit will be blowed after the unit is stopped to avoid mould.
● Having set X-FAN function on: After turning off the unit
29
Page 33
6. Function and Control
Service Manual
by pressing " ON/OFF " button indoor fan will continue
running for a few minutes. at low speed. In this per- iod,
Hold fan speed button for 2s to stop indoor fan directly.
Having set X-FAN function off: After turning off the unit by
pressing " " button, the complete unit will be off directly.
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. If start this function, the unit will run at
super-high fan speed to cool or heat quickly so that the ambient
temperature approaches the preset temperature as soon as
possible.
/ button
● Press "
temperature 1°C (°F). Holding "
" or " " button once increase or d ecrease set
" or " " button, 2s later,
set temperature on remote controller will change quickly. On
releasing button after setting is nished, temperature indicator on
indoor unit will change accordingly.
● When setting T-ON, T-OFF or CLOCK, press "
" or " " button
to adjust time. (Refer to CLOCK, TON,T-OFF buttons)
button
Press this button can select left & right swing angle. Fan blow
angle can be selected circularly as below:
Notice
：
● Press this button continuously more than 2s, the main unit will
swing back and forth from left to right, and then loosen the button,
the unit will stop swinging and present position of guide louver
will be kept immedi-ately.
● Under left and right swing mode, when the status is switched
from off to
, if press this button again 2s later, status
will switch to off status directly; if press this button again within
2s, the change of swing status will also depend on the circulation
sequence stated above.
● The function is only available for some models.
button
Press this button can select left & right 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 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.
Notice
：
● "
" may not be available. When air conditioner
、
、
receives this signal, the air conditioner will blow fan automatically.
● Press this button continuously for more than 2s, the main
unit will swing back and forth from up to down, and then loosen
the button, the unit present position of guide louver will be kept
immediately.
● Under up and down swing mode, when the status is switched
from off to
, if press this button again 2s later, status will
switch to off status directly; if press this button again within 2s,
the change of swing status will also depend on the circulation
sequence stated above.
T-ON T-OFF
button
● T-ON button
"T-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 T-ON
setting. After each pressing "▲" or " ▼ " button, T-ON setting will
increase or decrease 1min. Hold "▲" or " ▼ " button, 2s later, the
time will change quickly until reaching your required time. Press
"T-ON" to conrm it. The word "ON" will stop blinking. " " icon
resumes displaying. Cancel T-ON: Unde the condition that T-ON
is started up, press "T-ON " button to cancel it.
● T-OFF button
"T-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 T-OFF
setting. After each pressing "▲" or " ▼ " button, T-OFF setting
will increase or decrease 1min. Hold "▲" or " ▼ " button, 2s later,
the time will change quickly until reaching your required time.
Press "T-OFF" word "OFF" will stop blinking.
" " icon resumes displaying. Cancel T-OFF. Under the condition
that T-OFF is started up, press "T-OFF" button to cancel it.
Notice:
● Under on and off status, you can set T-OFF or T-ON
simultaneously.
● Before setting T-ON or T-OFF, please adjust the clock time.
● After starting up T-ON or T-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.
I FEEL
button
Press this button to start I FEEL function and "
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
" will be
30
Technical Information
Page 34
6. Function and Control
Service Manual
button again to cancel I FEEL function and " " will disappear.
● Please put the remote controller near user when this function
is set. Do not put the remote contro ller near the object of high
temperature or low temperature in order to avoid detecting
inaccurate amb ient temperature.
When I FEEL function is turned on, the remote controller should
be put within the area where indoor unit can receive the signal
sent by the remote controller.
CLOCK
Press this button to set clock time. "
will blink. Press "▲" or " ▼ " button within 5s to set clock time.
Each pressing of "▲" or " ▼ " button, clock time will increas e 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.
button
" icon on remote controller
Notice:
● Clock time adopts 24-hour mode.
● The interval between two operations can't exceed 5s.
Otherwise, remote controller will quit setting status. Operation for
TIMER ON/TIMER OFF is the same.
SLEEP
● Press this button, can select Sleep 1 (
Sleep 3 (
after electried, Sleep Cancel is defaulted.
● Sleep 1 is Sleep mode 1, in Cool modes; sleep status after run
for one hour, the main unit setting temperature will increase 1,
two hours, setting temperature increased 2℃, then the unit will
run at this setting temperature; In Heat mode: sleep status after
run for one hour, the setting temperature will decrease 1, two
hours, setting temperature will decrease 2, then the unit will run
at this setting temperature.
● Sleep 2 is sleep mode 2, that is air conditioner will run
according to the presetting a group of sleep temperature curve.
● Sleep 3-the sleep curve setting under Sleep mode by DIY;
(1) Under Sleep 3 mode, press “Turbo” button for a long
time, remote controller enters into user individuation sleep
setting status, at this time, the time of remote controller will
display “1hour”, the setting temperature “88” will display the
corresponding temperature of last setting sleep curve and blink
(The rst entering will display according to the initial curve setting
value of original factory);
(2) Adjust “+” and “-” button, could change the corresponding
setting temperature, after adjusted, press “Turbo” button for
conrmation;
(3) At this time, 1hour will be automatically increased at the timer
position on the remote control, (that are "2hours" or "3hours" or
"8hours"), the place of setting temperature "88" will display the
corresponding temperature of last setting sleep curve and blink;
button
1), Sleep 2 ( 2),
3) and cancel the Sleep, circulate between these,
(4) Repeat the above step (2)~(3) operation, until 8 hours
temperature setting nished, sleep,curve setting nished, at this
time, the remote controller will resume the original timer display;
temperature display will resume to original setting temperature.
● Sleep3- the sleep curve setting under Sleep mode by DIY could
be inquired:
The user could accord to sleep curve setting method to inquire
the presetting sleep curve, enter into user individuation sleep
setting status, but do not change the temperature, press "Turbo"
button directly for conrmation. Note: In the above presetting or
enquiry procedure, if continuously within 10s, there is no button
pressed, the sleep curve setting within 10s, there is no button
pressed, the sleep curve setting status will be automatically quit
and resume to display the original displaying. In the presetting
or enquiry procedure, press "ON/OFF" button, "Mode" button,
"Sleep" button, the sleep curve setting or enquiry status will quit
similarly.
WiFi
button
Press " WiFi " button to turn on WiFi function, " WiFi " icon will
be displayed on the remote controller; Hold " WiFi " button
for 5s to turn off WiFi function and " WiFi " icon will disappear.
Under off status, press " MODE " and " WiFi " buttons
simultaneously for 1s, WiFi module will restore factory settings.
● This function is only available for some models.
button
Press this button to achieve the on and off of health and
scavenging functions in operation station. Press this button
for the first time to start scavenging function; LCD displays
". Press the button for the second time to start health
"
and scavenging functions simultaneously; LCD displays
" " and " ". Press this button for the third time to quit health
and scavenging functions simultaneously. Press the button for
the fourth time to start health function; LCD display " ". Press
this button again to repeat the operation above.
● This function is applicable to partial of models .
LIGHT
button
Press this button to turn off display light on indoor unit. "
on remote controller disappears.
Press this button again to turn on display light. " " icon is
displayed.
TEMP
button
Press this button, you can see indoor set temperature, indoor
ambient temperature on indoor unit's display. The setting on
remote controller is selected circularly as below:
no display
" icon
Technical Information
31
Page 35
I feel
Fig.2
③
6. Function and Control
Service Manual
Introduction for icons on display screen
Set fan speed
Turbo mode
Send signal
Auto mode
Cool mode
Dry mode
Fan mode
Operation mode
Heat mode
Sleep mode
heating function
8
Health mode
Scavenging function
Quiet
X-FAN function
Set temp.
Indoor ambient
Temp.
display type
temp.
Outdoor ambient
temp.
Clock
Set temperature
WiFi function
Set time
TIMER ON / TIMER OFF
Left & right swing
Up & down swing
Child lock
Function introduction for combination buttons
Energy-saving function
Under cooling mode, press "TEMP" and "CLOCK" buttons
simultaneously to start up or turn off energysaving 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 ex-factorysetting to reach
to the best energy-saving effect.
Press "TEMP" and "CLOCK" buttons simultaneously again to exit
energysaving function.
Notice
● 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 cool
mode, press sleep button will cancel energy-saving function. If
sleep function has been set under cool mode, start up the energysaving function will cancel sleep function.
8°C heating function
this function is started up, "
controller, and the air conditioner keep the heating status at 8°C.
Press "TEMP" and "CLOCK" buttons simultaneously again to exit
8°C heating function.
Notice
● Under 8°C heating function, fan speed is defaulted at auto
speed and it can't be adjusted.
● Under 8°C heating function, set temperature can't be adjusted.
Press "TURBO" button and the remote controller won't send
signal.
● Sleep function and 8°C heating function can't operate at the
same time. If 8°C heating function has been set under heat
mode, press sleep button will cancel 8°C heating function. If
sleep function has been set under heat mode, start up the 8°C
heating function will cancel sleep function.
● Under °F temperature display, the remote controller will display
46°F heating.
Child lock function
Press "▲" and "▼" simultaneously to turn on or turn off child lock
function. When child lock function is on, "
remote controller.If you operate the remote controller, the " "icon
will blink three times without sending signal to the unit.
Temperature display switchover function
Under OFF status, press "▼" and "MODE" buttons
simultaneously to switch temperature display between °C and °F.
Auto clean function
Under unit off status, hold "Mode" and "Fan" buttons simultaneously for 5s to turn on or turn off the auto clean function. When the
auto clean function is turned on, indoor unit displays "CL" . During
the auto clean process of evaporator, the unit will perform fast
cooling or fast heating. There may be some noise, which is the
sound of owing liquid or thermal expansion or cold shrinkage.
The air conditioner may blow cool or warm air, which is a normal
phenomenon. During cleaning process, please make sure the
room is well ventilated to avoid affecting the comfort.
Notice
● The auto clean function can only work under normal ambient
temperature. If the room is dusty, clean it once a month; if not,
clean it once every three months. After the auto clean function is
turned on, you can leave the room. When auto clean is nished,
the air conditioner will enter standby status.
● This function is only available for some models.
" and "8°C" will be shown on remote
" icon is displayed on
Replacement of batteries in remote controller
1. Lift the cover along the direction of arrow (as shown in Fig 1① ).
2.Take out the original batteries (as shown in Fig 1 ② ).
3.Place two 7# (AAA 1.5V) dry batteries, and make sure the
position of “ + ” polar and “ - ” polar is correct (as shown in Fig 2
).
③
4.Reinstall the cover (as shown in Fig 2 ④ ).
①
②
④
Under heat mode, press "TEMP" and "CLOCK" buttons
simultaneously to start up or turn off 8°C heating function. When
32
Fig.1
Technical Information
Page 36
6. Function and Control
Service Manual
NOTICE:
● 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.
Emergency operation
If remote controller is lost or damaged, please use aux.
button to turn on or turn off the air conditioner. The
operation in details is as below: As shown in the gure, open
panel and press aux.button to turn off the air conditioner.
When the air conditioner is turned on, it will operate under
auto mode.
aux. button
Technical Information
33
Page 37
GREE+ App Download Linkage
iOS system
Android system
and
6. Function and Control
6.2 GREE+ App Operation Manual
Control Flow Chart
Service Manual
Internet
Gree Cloud
Gree
intelligent
Home Wi-Fi
home
appliances
Operating Systems
Requirement for User's smart phone:
Support iOS7.0 and
above version
Cellular/
Other Wi-FI
Home wireless router
Home Wi-Fi
GREE+ APP
Support Android 4.4
above version
Download and installation
Scan the QR code or search "GREE+" in the application market to download and install it. When "GREE+" App is installed, register the
account and add the device to achieve long-distance control and LAN control of Gree smart home appliances.
For more information, please refer to "Help" in App.
34
Technical Information
Page 38
iOS system
Android system
and
6. Function and Control
Service Manual
6.3 Ewpe Smart App Operation Manual
Control Flow Chart
Internet
Cloud
Intelligent
Home Wi-Fi
home
appliances
Operating Systems
Requirement for User's smart phone:
Support iOS7.0 and
above version
Cellular/
Other Wi-FI
Home wireless router
Home Wi-Fi
APP
Support Android 4.4
above version
Download and installation
App Download Linkage
Scan the QR code or search "Ewpe Smart" in the application market to download and install it. When "Ewpe Smart" App is installed,
register the account and add the device to achieve long-distance control and LAN control of smart home appliances.
For more information, please refer to "Help" in App.
Technical Information
35
Page 39
6. Function and Control
6.4 Brief Description of Modes and Functions
1. Basic function of system
(1) Cooling mode
(1) Under this mode, fan and swing operates at setting status.
Temperature setting range is 16~30OC.
(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 16~30OC.
(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 16~30OC.
(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 set temperature can be adjusted.The unit
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 16~30
O
C.
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.
(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
a. Start up compulsory defrosting function
Under ON status, set heating mode with remote controller and
adjust the temperature to 16
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.
b. 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:
a. Enter refrigerant recycling function
Service Manual
O
C. Press “+, -, +, -, +,-” button
36
Technical Information
Page 40
6. Function and Control
Service Manual
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.
b. 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
a. When user set the remote controller to display set temperature
(corresponding remote control code: 01), current set temperature
will be displayed.
b. 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 16~30
O
C.
(12) Off-peak energization function:
Adjust compressors 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. Thats
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) 8ºC heating function
Under heating mode, you can set 8ºC heating function by remote
controller. The system will operate at 8ºC set 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
37
Page 41
6. Function and Control
Service Manual
Outdoor Units
1. Cooling mode
Working condition and process of cooling mode:
(1) When T
indoor ambient temperature≥Tpreset
Indoor fan, outdoor fan and compressor start operation.
Indoor fan operates according to set fan speed.
(2) Wh e n T
indoor ambient temperature≤Tpreset
operation and outdoor fan will stop 30s later. Indoor fan operates
according to set fan speed.
(3) When T
preset
-2oC<T
indoor ambient temperature
according to the previous status.
Under cooling mode, 4-way valve is not energized. Temperature
o
setting range is 16~30
C . If compressor stops because of
malfunction in cooling mode, indoor fan and swing motor will work
according to the original status.
2. Drying mode
(1) Working condition and process of drying mode
a. When T
indoor ambient temperature
Outdoor fan and compressor start operation while indoor fan will
operate at low fan speed.
o
b. When Tpreset-2
C ≤Tindoor ambient temperature≤Tpreset,
unit operates according to the previous status.
c. When Tindoor ambient temperature < Tpreset-2
compressor stops operation and outdoor fan will stop 30s later.
(2) Under drying mode, 4-way valve is not energized.
Temperature setting range is 16~30
(3) Protection function: same as in cooling mode.
3. Fan mode
(1) Under this mode, indoor fan can select different fan speed
(except Turbo) or auto fan speed. Compressor, outdoor fan and
4-way valve all stop operation.
(2) In fan mode, temperature setting range is 16~30
4. Heating mode
Working condition and process of heating mode:
(1) When T
-(T
preset
indoor ambient temperature-Tcompensation
into heating mode. Compressor, outdoor fan and 4-way valve
start operation.
(2)When -2
C < T
-(T
preset
indoor ambient temperature-Tcompensation
o
operates according to the previous status.
(3)When T
-(T
preset
indoor ambient temperature-Tcompensation
stops operation and outdoor fan will stop 30s later. Indoor fan will
be in residual-heat blowing status.
(4) When unit is turned off under heating mode or changed to
other modes from heating mode, 4-way valve will be power-off
2min after compressor stops working (compressor is in operation
status under heating mode).
(5) Wh e n T
outdoor ambient temperature
operation immediately. Outdoor fan will stop 30s later.
, unit enters into cooling mode.
-2oC , compressor stops
> T
<T
, unit will be in drying mode.
preset
o
C.
, unit operates
preset
o
C .
)≥1oC , unit enters
) < 1oC , unit
)≤-2oC , compressor
> 30oC , compressor stops
o
C ,
(6) Under the condition that compressor is turned on, when unit
is changed to heating mode from cooling or drying mode, 4-way
valve will be energized in 2~3mins delay.
Note: Tcompensation is determined by IDU and ODU. If IDU
controls the compensation temperature, then Tcompensation
is determined according to the value sent by IDU to ODU; If
IDU does not control the compensation temperature, then
o
Tcompensation will default to 3
C by the ODU.
5. Freon recovery mode
After the Freon recovery signal from IDU is received, cooling at
rated frequency will be forcibly turned on to recover Freon.
Indoor unit will display Fo. If any signal from remote controller is
received, unit will exit from Freon recovery mode and indoor unit
stops displaying Fo.
6. Compulsory defrosting
If unit is turned on under heating mode and set temperature is
o
C (by remote controller), press “+, -, +, -, +, -” within 5s, unit
16
will enter into compulsory defrosting mode and send the signal
to ODU. When the compulsory defrosting signal from ODU is
received, IDU will exit from the compulsory defrosting mode
and stop sending the signal to ODU. After ODU receives the
compulsory defrosting code, it will start compulsory defrosting.
Defrosting frequency and opening angle will be the same as in
normal defrosting mode. When compulsory defrosting is nished,
the complete unit resumes original status.
7. Auto mode
Auto mode is determined by controller of IDU. See IDU logic for
details.
O
C heating
8. 8
O
Set temperature is 8
C. Display board of IDU displays 8OC.
Under this mode, “Cold air prevention” function is shielded.
If compressor is operating under this mode, fan speed will adjust
according to auto fan speed; if compressor stops operation under
this mode, indoor fan will be in residual-heat blowing status.
When power on, communication light will be blinking in
a normal way (after receiving a group of correct signals,
blinking stops for 0.2s~0.3s). If There's no communication,
communication light will be always on. If other ODU has
malfunction, communication light will be on for 1s and off
for 1s in a circular way.
38
Technical Information
Page 42
7. Notes for Installation and Maintenance
Service Manual
Safety Precautions: Important!
Please read the safety precautions carefully before installa-
tion 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 qualied 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:
be installed in the circuit. The air switch should be all-pole
parting and the contact parting distance should be more
than 3mm.
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 specication 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 20kg.
3. When installing the indoor unit and outdoor unit, a sufcient xing bolt must be installed; make sure the installation
support is rm.
4. Ware safety belt if the height of working is above 2m.
5. Use equipped components or appointed components during installation.
6. Make sure no foreign objects are left in the unit after nishing installation.
1. Cut off the power supply of air conditioner before check-
ing 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 rmly 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 qualied person.
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
Refrigerant Safety Precautions:
1. When refrigerant leaks or requires discharge during installation, maintenance, or disassembly, it should be handled by
certied professionals or otherwise in compliance with local
laws and regulations.
2. Avoid contact between refrigerant and re as it generates
poisonous gas; Prohibit prolong the connection pipe by
welding.
3. Apply specied 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.
4. Make sure no refrigerant gas is leaking out when installation is completed.
5. If there is refrigerant leakage, please take sufcient measure to minimize the density of refrigerant.
6. Never touch the refrigerant piping or compressor without
wearing glove to avoid scald or frostbite.
Improper installation may lead to re hazard, explosion,
electric shock or injury.
Installation and Maintenance
39
Page 43
7. Notes for Installation and Maintenance
Safety Precautions for Installing and Relocating the Unit:
To ensure safety, please be mindful of the following precautions.
WARNINGS
Service Manual
1. When installing or relocating the unit, be sure to keep the
refrigerant circuit free from air or substances other than the
specied refrigerant.
Any presence of air or other foreign substance in the refrigerant
circuit will cause system pressure rise or compressor rupture,
resulting in injury.
2.When installing or moving this unit, do not charge the
refrigerant which is not comply with that on the nameplate or
unqualied refrigerant.
Otherwise, it may cause abnormal operation, wrong action,
mechanical malfunction or even series safety accident.
3.When refrigerant needs to be recovered during relocating
or repairing the unit, be sure that the unit is running in
cooling mode.Then, fully close the valve at high pressure
side (liquid valve).About 30-40 seconds later, fully close the
valve at low pressure side (gas valve), immediately stop
the unit and disconnect power. Please note that the time for
refrigerant recovery should not exceed 1 minute.
If refrigerant recovery takes too much time, air may be sucked in
and cause pressure rise or compressor rupture, resulting in injury.
4.During refrigerant recovery, make sure that liquid valve
and gas valve are fully closed and power is disconnected
before detaching the connection pipe.
If compressor starts running when stop valve is open and
connection pipe is not yet connected, air will be sucked in and
cause pressure rise or compressor rupture, resulting in injury.
5.When installing the unit, make sure that connection pipe is
securely connected before the compressor starts running.
If compressor starts running when stop valve is open and
connection pipe is not yet connected, air will be sucked in and
cause pressure rise or compressor rupture, resulting in injury.
6.Prohibit installing the unit at the place where there may be
leaked corrosive gas or ammable gas.
If there leaked gas around the unit, it may cause explosion and
other accidents.
7.Do not use extension cords for electrical connections. If
the electric wire is not long enough, please contact a local
service center authorized and ask for a proper electric wire.
Poor connections may lead to electric shock or re.
8.Use the specied types of wires for electrical connections
between the indoor and outdoor units. Firmly clamp the
wires so that their terminals receive no external stresses.
Electric wires with insufcient capacity, wrong wire connections
and insecure wire terminals may cause electric shock or re.
40
Installation and Maintenance
Page 44
7. Notes for Installation and Maintenance
Service Manual
Main Tools for Installation and Maintenance
Level meter Measuring tape
Drill head Electric drill
Torque wrench Open-end wrench
Screw driver
Electroprobe
Inner hexagon
spanner
Impact drill
Universal meter
Electronic
leakage detector
Vacuum pump
Pipe cutter
Installation and Maintenance
Pressure meter
Pipe pliers Pipe pliers
Pipe benderPipe expander
Electronic scaleRefrigerant container
Soldering appliance
41
Page 45
8. Installation
8.1 Installation Dimension Diagram
Service Manual
Space to the ceiling
to the wallSpace
At least 6 in
Space to the floor
At leas
t 72 in
At least
6 in
Space to the obstruction
At least 120 in
Space to the wall
At least 6 in
Space to the wall
At least 6 in
Space to the obstruction
At least 20 in
Space to the obstruction
Space to the obstruction
At least
80 in
At least
12 in
Drainage pipe
Space to the ob
At least 20 in
struction
42
Installation and Maintenance
Page 46
Note: this flow is only for reference; please find the more detailed installation steps in this section.
8. Installation
Service Manual
Installation Procedures
Start installation
Preparation before installation
Read the requirements
for electric connection
Select indoor unit
installation location
Install wall-mounting
frame, drill wall holes
Connect pipes of indoor
unit and drainage pipe
Connect wires of indoor unit
Bind up pipes and
hang the indoor unit
Make the bound pipes pass
through the wall hole and then
connect outdoor unit
select installation
location
Prepare tools
Select outdoor unit
installation location
Install the support of outdoor unit
(select it according to the actual situation)
Fix outdoor unit
Install drainage joint of outdoor unit
(only for cooling and heating 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
Installation and Maintenance
43
Page 47
8. Installation
Service Manual
8.2 Installation Parts-checking
No. Name
1 Indoor unit
2 Outdoor unit
3 Connection pipe
4 Drainage pipe
5 Wall-mounting frame
6 Connecting cable(power cord)
7 Wall pipe
8 Sealing gum
9 Wrapping tape
10 Support of outdoor unit
11 Fixing screw
12 Drainage plug(cooling and heating unit)
13 Owners manual, remote controller
Note:
1.Please contact the local agent for installation.
2.Don't use unqualied 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.
(7) The appliance shall nost be installed in the laundry.
(8) It’s not allowed to be installed on the unstable or motive base
structure (such as truck) or in the corrosive environment (such as
chemical factory).
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 andwon'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 2.5m (6ft min) above floor.
(7) Don't install the indoor unit right above the electric appliance.
(8) Please try your best to keep way from fluorescent lamp.
3. Outdoor Unit:
(1) Select a location where the noise and outow air emitted by
the outdoor unit will not affect neighborhood.
(2) The location should be well ventilated and dry, in which the
outdoor unit won't be exposed directly to sunlight or 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.
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 qualied 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, re hazard or malfunction. Please install
proper power supply cables before using the air conditioner.
(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 nishing installation.
(7) The temperature of refrigerant circuit will be high, please keep
the interconnection cable away from the copper tube.
(8) The appliance shall be installed in accordance with national
wiring regulations.
2. Grounding Requirement:
(1) The air conditioner isⅠclass 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 3mm in all poles should be connected in xed 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 circuit-short 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
conrm 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 xing 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 ll the plastic expansion particles in
44
Installation and Maintenance
Page 48
Mark in the middle
”
”
Indoor
Outdoor
t
Right
Left Right
Insulating pipe
Torque wrenc
Open-end
Indoor pipe
Drain hose
Drain hose
Tape
Insulating pipe
Drain hose
8. Installation
Service Manual
the holes.
(3) Fix the wall-mounting frame on the wall with tapping screws
and then check if the frame is rmly installed by pulling the frame.
If the plastic expansion particle is loose, please drill another xing
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
150mm
Left
2 11/64”
2 48/64”
(Rear piping hole)
(For some models)
of it
Level meter
Wall
Space
to the
wall
above
150mm
Right
(Rear piping hole)
2 11/64”
2 48/64”
Fig.1
(2) Open a piping hole with the diameter of Φ55/70mm 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)
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)
wrench
Union nutPipe joint
Pipe
h
Union nut
Pipe
Fig.5 Fig.6
Fig.7
Refer to the following table for wrench moment of force
:
Piping size (inch) Tightening torque (N.m)
1/4 15~20
Φ2 11/64
5-10
°
Φ2 48/64
Fig.2
Note:
Pay attention to dust prevention and take relevant safety
measures when opening the hole.
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)
Cut off
the hole
Rear right
Left
Rear lef
3/8 30~40
1/2 45~55
5/8 60~65
3/4 70~75
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
Outlet
pipe
Fig.8 Fig.9
Note:
(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)
Fig.3
Fig.4
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
Installation and Maintenance
Fig.10
45
Page 49
Indoor power cord
Indoor
Outdoor
Wall pipe
Sealing gum
Upper hook
wall-mounting frame
Screw
Wiring cover
Note: The wiring connect is for reference only,
please refer to the actual one.
8. Installation
Service Manual
7. Connect Wire of Indoor Unit
(1) Open the panel, remove the screw on the wiring cover and
then take down the cover. (As show in Fig.11)
Panel
Fig.11
(2) Make the power connection wire go through the cable-cross
hole at the back of indoor unit and then pull it out from the front
side. (As show in Fig.12)
Cable-cross
hole
Power connection
wire
Fig.12
(3) Remove the wire clip; connect the power connection
wiresignal control wire (only for cooling and heating unit) to the
wiring terminal according to the color; tighten the screw and then
x the power connection wire with wire clip. (As show in Fig.13)
23
N(1)
red
(brown)
green
(yellow-green)
black
white
(blue)
Outdoor unit connection
Indoor and
Indoor unit
outdoor power cord
Gas
pipe
Band
Liquid
pipe
Drain hose
Fig.14
Connection pipe
Drain hose
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.
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)
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 insufcient, 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 nishing 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.
8. Bind up Pipe
(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.
Lower hook of
Fig.16
Fig.17
Note:
Do not bend the drain hose too excessively in order to prevent
blocking.
8.6 Installation of Outdoor unit
1. Fix the Support of Outdoor Unit(Select it according to the
actual installation situation)
(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 3cm above the
oor in order to install drain joint.(As show in Fig.18)
46
Installation and Maintenance
Page 50
t
Drain hos
At least 3cm above the floor
Foot holes
Foot holes
Union nut
cable cross
plate sub-assy
The drain hose
Wall
Drain hose
8. Installation
Service Manual
(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.
Fig.18
Drain vent
e
Fig.19
Chassis
Outdoor drain join
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)
Screw
Cable Cross
Plate Subassy
Valve
Cover
Fig.20 Fig.21
4. Connect Indoor and Outdoor Pipes
(1) Remove the screw on the right handle of outdoor unit and
then remove the handle. (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)
3VIR09HP115V1AO
3VIR12HP115V1AO
2N(1)
3
NL
white
black
(blue)
Indoor unit connection
09K / 12K 230V
N(1) 23
L1 L2
white
black
(blue)
Indoor unit connection
18K / 24K 230V
N(1) 23
white
black
(brown)
(blue)
Indoor unit connection
red
(brown)
red
(brown)
red
green(yellow-green)
black(brown)
white
green
(yellow-green)
green(yellow-green)
black(brown)
white
green
(yellow-green)
L2
L1
white
black(brown)
green(yellow-green)
(blue)
(blue)
green
(yellow-green)
(blue)
POWER
POWER
POWER
L
N
L2
L1
L2
L1
Fig.23
Note: the wiring connect is for reference only,please refer to the
actual one.
Note:
(1) After tightening the screw, pull the power cord slightly to
check if it is rm.
(2) Never cut the power connection wire to prolong or shorten
the distance.
(3) The connecting wire and connection pipe cannnot touch
each other.
(4) Top cover of outdoor unit and electric box assembly should
be xec by the screw. Otherwise, it can cause a re, or short
circuit caused by water or dust.
Install the over line pipe
wire-passing
hole
wire pipe
Liquid
valve
Liquid pipe
gas pipe
gas valve
Pipe joint
Fig.22
(3) Pretightening the union nut with hand.
(4) Tighten the union nut with torque wrench .
Refer to the following table for wrench moment of force
Piping size (inch) Tightening torque (N.m)
1/4 15~20
3/8 30~40
1/2 45~55
5/8 60~65
3/4 70~75
5. Connect Outdoor Electric Wire
(1) Remove the wire clip; connect the power connection wire and
signal control wire (only for cooling and heating unit) to the wiring
terminal according to the color; x them with screws. (As show in
Fig.23)
Installation and Maintenance
Fixed nut
Finish
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
10cm.
(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)
can't raise
upwards.
U-shaped curve
Fig.24 Fig.25
47
Page 51
be fluctuant
The water outlet
can't be placed
in water
Refrigerant charging
vent
Nut of refrigerant
Charging vent
8. Installation
Service Manual
Note:
(1) The through-wall height of drain hose shouldnt 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 uctuant, etc.(As show in Fig.26)
(3) The water outlet can't be placed in water in order to drain
smoothly.(As show in Fig.27)
The drain hose can't be fluctuant
The drain
hose can't
be fluctuant
The water
outlet can't
Fig.26 Fig.27
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 manifold to the refrigerant
charging vent of gas valve and then connect the other charging
hose to the vacuum pump.
(3) Open the manifold completely
check if the pressure of manifold remains in -14.5 Psi.
(4) Close the vacuum pump and maintain this status for 1-2min
to check if the pressure of manifold remains in -14.5 Psi. If the
pressure decreases, there may be leakage.
(5) Remove the manifold, 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
Gas valve
and operate for 10-15min to
Manifold
Valve cap
Lo Hi
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.
8.8 Check after Installation and Test
operation
1. Check after Installation
Check according to the following requirement after finishing
installation.
NO. Items to be checked Possible malfunction
Has the unit been installed
1
rmly?
Have you done the
2
refrigerant leakage test?
Is heat insulation of pipeline
3
sufcient?
4 Is water drained well?
Is the voltage of power
supply according to the
5
voltage marked on the
nameplate?
Is electric wiring and pipeline
6
installed correctly?
Is the unit grounded
7
securely?
Does the power cord follow
8
the specication?
Is there any obstruction in
9
air inlet and air outlet?
The dust and sundries
10
caused during installation
are removed?
The gas valve and liquid
11
valve of connection pipe are
open completely?
Is the inlet and outlet of
12
piping hole been covered?
The unit may drop, shake or
emit noise.
It may cause insufcient
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 insufcient
cooling (heating) capacity.
It may cause malfunction or
damaging the parts.
It may cause insufcient
cooling (heating) capacity.
It may cause insufcient
cooling(heating) capacity or
waster eletricity.
48
Inner hexagon
spanner
Fig.28
Vacuum pump
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.
Installation and Maintenance
Page 52
9. Maintenance
Service Manual
9.1 Error Code List
Display Method of
No. Malfunction Name
Indoor Unit
Dual-8 Code
Display
A/C status Possible Causes
High pressure
1
protection of system
Low pressure
2
protection of system
High discharge
3
temperature protection of
compressor
4 Overcurrent protection E5
Communication
5
Malfunction
E1
E3
E4
E6
During cooling and drying
operation, except indoor fan operates, all loads
stop operation.
During heating operation, the complete unit
stops.
The Dual-8 Code Display will show E3 until the
low pressure switch stop operation.
During cooling and drying
operation, compressor and
outdoor fan stop while indoor fan operates.
During heating
operation, all loads stop.
During cooling and drying
operation, compressor and
outdoor fan stop while indoor fan operates.
During heating
operation, all loads stop.
During cooling operation,
compressor stops while indoor fan motor
operates. During heating operation, the complete
unit stops.
Possible reasons:
1. Refrigerant was superabundant;
2.
Poor heat exchange (including lth blockage of
heat exchanger and bad radiating environment );
Ambient temperature is too high.
1.Low-pressure protection
2.Low-pressure protection of system
3.Low-pressure protection of compressor
ease refer to the malfunction analysis (discharge
Pl
protection, overload).
1. Supply voltage is unstable;
2.
Supply voltage is too low and load is too high;
3. Evaporator is dirty.
Refer to the corresponding malfunction analysis.
High temperature
6
resistant protection
7 EEPROM malfunction EE
Limit/decrease
8
frequency due to high
temperature of module
Malfunction protection of
9
jumper cap
E8
EU
C5
During cooling operation:
compressor will stop while indoor fan will operate.
During heating operation, the complete unit
stops.
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop
All loads operate normally, while
operation frequency for
compressor is decreased
Wireless remote receiver and
button are effective, but can
not dispose the related
command
Refer to the malfunction analysis (overload, high
temperature resistant).
Replace outdoor control panel AP1
Discharging after the complete unit is deenergized for 20mins, check whether the thermal
grease on
IPM Module of outdoor control panel AP1 is
sufcient and whether the radiator is inserted
tightly.
If it's no use, please replace control panel AP1.
1. No jumper cap insert on
mainboard.
2. Incorrect insert of jumper cap.
Jumper cap damaged.
3.
4. Abnormal detecting circuit of
mainboard.
10 Gathering refrigerant Fo
Installation and Maintenance
When the outdoor unit receive signal of Gathering
refrigerant ,the system will be forced to run under
cooling mode for gathering refrigerant
Nominal cooling mode
49
Page 53
9. Maintenance
Display Method of
No. Malfunction Name
Indoor ambient
11
temperature sensor is
open/short circuited
Indoor Unit
Dual-8 Code
Display
F1
A/C status Possible Causes
During cooling and drying operation, indoor
unit operates while other loads will stop; during
heating operation, the complete unit will stop
operation.
Service Manual
1. Loosening or bad contact of indoor ambient
temp. sensor and mainboard terminal.
2. Components in mainboard fell down leads
short circuit.
3. Indoor ambient temp. sensor damaged.(check
with sensor resistance value chart)
4. Mainboard damaged.
Indoor evaporator
12
temperature sensor is
open/short circuited
Outdoor ambient
13
temperature sensor is
open/short circuited
Outdoor condenser
14
temperature sensor is
open/short circuited
Outdoor discharge
16
temperature sensor is
open/short circuited
F2
F3
F4
F5
AC stops operation once reaches the setting
temperature. Cooling, drying:
internal fan motor stops operation while other
loads stop operation; heating:
stop operation
During cooling and drying operating, compressor
stops while indoor fan operates; During heating
operation, the complete unit will stop operation
During cooling and drying operation, compressor
stops while indoor fan will operate; During heating
operation, the complete unit will stop operation.
During cooling and drying operation, compressor
will sop after operating for about 3 mins, while
indoor fan will operate;
During heating operation, the complete unit will
stop after operating for about 3 mins.
AC
1. Loosening or bad contact of Indoor
evaporator temp. sensor and mainboard terminal.
2. Components on the mainboard fall
down leads short circuit.
3. Indoor evaporator temp. sensor damaged.
(check temp. sensor value chart for testing)
4. Mainboard damaged.
Outdoor temperature sensor hasn't been
connected well or is damaged. Please check it by
referring to the resistance table for temperature
sensor)
Outdoor temperature sensor hasn't been
connected well or is damaged. Please check it by
referring to the resistance table for temperature
sensor)
1.Outdoor temperature sensor hasn't been
connected well or is damaged. Please check it by
referring to the resistance table for temperature
sensor)
2.The head of temperature sensor hasn't been
inserted into the copper tube
50
Limit/decrease frequency
17
due to overload
Decrease frequency due
18
to overcurrent
Decrease frequency due
19
to high air discharge
Limit/decrease frequency
20
due to antifreezing
F6
F8
F9
FH
All loads operate normally
frequency for compressor is decreased
All loads operate normally, while operation
frequency for compressor is decreased
All loads operate normally, while operation
frequency for compressor is decreased
All loads operate normally, while operation
frequency for compressor is decreased
, while operation
Refer to the malfunction analysis (overload, high
temperature resistant)
The input supply voltage is too low;
System pressure is too high and overload
Overload or temperature is too high;
Refrigerant is insufcient;
Malfunction of electric expansion valve (EKV)
Poor air-return in indoor unit or fan speed is too
low
Installation and Maintenance
Page 54
9. Maintenance
Service Manual
Display Method of
No. Malfunction Name
Voltage for DC bus-bar is
21
too high
oltage of DC bus-bar is
V
22
too low
Indoor Unit
Dual-8 Code
Display
PH
PL
A/C status Possible Causes
During cooling and drying operation, compressor
will stop while indoor fan will operate;
During heating operation, the complete unit will
stop operation.
During cooling and drying operation, compressor
will stop
while indoor fan will operate;
During heating operation, the complete unit will
stop
1. Measure the voltage of position L and N on
wiring board (XT), if the voltage is higher than
265VAC, turn on the unit after the supply voltage
is increased to the normal range.
2.If the AC input is normal, measure the voltage
of electrolytic capacitor C on control panel (AP1),
if it's normal, There's malfunction for the circuit,
please replace the control panel (AP1)
1. Measure the voltage of position L and N on
wiring board (XT), if the voltage is higher than
150VAC,
turn on the unit after the supply voltage is
increased to the normal range.
2.If the AC input is normal, measure the voltage
of electrolytic capacitor C on control panel (AP1),
if it's normal, There's malfunction for the circuit,
please replace the control panel (AP1)
Compressor Min
23
frequence in test state
Compressor rated
24
frequence in test state
Compressor maximum
25
frequence in test state
Compressor intermediate
26
frequence in test state
P0 Showing during min. cooling or min. heating test
P1
P2 Showing during max. cooling or max. heating test
P3
Showing during nominal cooling or nominal
heating test
Showing during middle cooling or middle heating
test
Overcurrent protection of
27
phase current for
compressor
Installation and Maintenance
P5
During cooling and drying operation, compressor
will stop while indoor fan will operate;
During heating operation, the complete unit will
stop operation.
er to the malfunction analysis (IPM protection,
Ref
loss of synchronism protection and overcurrent
protection of phase current for compressor.
51
Page 55
9. Maintenance
Display Method of
No. Malfunction Name
Indoor Unit
Dual-8 Code
Display
Service Manual
A/C status Possible Causes
Charging
28
malfunction of capacitor PU
Malfunction of module
29
temperature sensor circuit
Module high temperature
30
protection
Overload protection for
31
compressor
P7
P8
H3
During cooling and drying operation, compressor
will stop while indoor fan will operate;
During heating operation, the complete unit will
stop
During cooling and drying operation, compressor
will stop while indoor fan will operate;
During heating operation, the complete unit will
stop
During cooling operation, compressor will stop
while indoor fan will operate; During heating
operation, the complete unit will stop
During cooling and drying operation, compressor
will stop while indoor fan will operate;
During heating operation, the complete unit will
stop operation.
Refer to the part three—charging malfunction
analysis of capacitor
Replace outdoor control panel AP1
After the complete unit is de-energized for
20mins, check whether the thermal grease on
IPM Module of outdoor control panel AP1 is
sufcient and whether the radiator is inserted
tightly. If it's no use, please replace control panel
AP1.
1. Wiring terminal OVC-COMP is loosened. In
normal state, the resistance for this terminal
should
be less than 1ohm.
2.Refer to the malfunction analysis ( discharge
protection, overload)
32 IPM protection H5
Module temperature is too
33
high
Internal motor (fan motor)
34
do not operate
Desynchro-nizing of
35
compressor
P8
H6
H7
During cooling and drying operation, compressor
will stop while indoor fan will operate;
During heating operation, the complete unit will
stop operation.
During cooling and drying operation, compressor
and outdoor fan stop while indoor fan operates.
During heating operation, all loads stop.
Internal fan motor, external fan motor, compressor
and electric heater stop operation,guide louver
stops at present location.
During cooling and drying operation, compressor
will stop while indoor fan will operate;
During heating operation, the complete unit will
stop operation.
Refer to the malfunction analysis (IPM protection,
loss of synchronism protection and overcurrent
protection of phase current for compressor
Radiating grease on IPM module of
outdoor unit main board is not enough;
screws have not been xed tightly;
Hardware malfunction of outdoor unit main board;
1. Bad contact of DC motor feedback terminal.
2.
Bad contact of DC motor control end.
3. Fan motor is stalling.
4. Motor malfunction.
5. Malfunction of mainboard revdetecting circuit.
Refer to the malfunction analysis (IPM protection,
loss of synchronism protection and overcurrent
protection of phase current for compressor
.
.
52
Outdoor DC fan motor
36
malfunction
L3
Outdoor DC fan motor malfunction lead to
compressor stop operation,
DC fan motor malfunction or system blocked or
the connector loosed
Installation and Maintenance
Page 56
9. Maintenance
Service Manual
Display Method of
No. Malfunction Name
Indoor Unit
Dual-8 Code
Display
A/C status Possible Causes
37 power protection L9
Indoor unit and outdoor
38
unit doesn't match
39 Failure start-up LC
Cold air prevention
40
protection
Anti-freezing rotection
41
for evaporator
LP compressor and Outdoor fan motor can't work Indoor unit and outdoor unit doesn't match
E9
E2
compressor stop operation and Outdoor fan
motor will stop 30s latter , 3 minutes latter fan
motor and compressor will restart
During cooling and drying operation, compressor
will stop while indoor fan will operate;
During heating operation, the complete unit will
stop operation.
To protect the electronical components when
detect high power
Refer to the malfunction analysis
Not the error code. It’s the status code for
the operation.
Not the error code. It’s the status code for
the operation.
Malfunction of phase
42
current detection circuit
for compressor
Malfunction of voltage
43
dropping for DC bus-bar
Malfunction of complete
44
unit's current detection
The four-way valve is
45
abnormal
U1
U3
U5
U7
During cooling and drying operation, compressor
will stop while indoor fan will operate;
During heating operation, the complete unit will
stop
During cooling and drying operation, compressor
will stop while indoor fan will operate;
During heating operation, the complete unit will
stop
During cooling and drying operation, the
compressor will stop while indoor fan will operate;
During heating operating, the complete unit will
stop operation.
If this malfunction occurs during heating
operation, the complete unit will stop operation.
Replace outdoor control panel AP1
Supply voltage is unstable
There's circuit malfunction on outdoor unit control
panel AP1, please replace the outdoor unit
control panel AP1.
1.Supply voltage is lower than AC175V;
2.Wiring terminal 4V is loosened or broken;
3.4V is damaged, please replace 4V.
Malfunction of zero-cross
46
detection circuit
Installation and Maintenance
U8 The complete unit stops
1.Power supply is abnormal;
2.Detection circuit of indoor control mainboard is
abnormal.
53
Page 57
9. Maintenance
Display Method of
No. Malfunction Name
Malfunction of detecting
47
plate(WIFI )
Dual-8 Code
Indoor Unit
Display
JF
A/C status Possible Causes
Loads operate normally, while the unit can’t be
normally controlled by APP.
Service Manual
1. Main board of indoor unit is damaged;
Detection board is damaged;
2.
3. The connection between indoor unit and
detection board is not good;
Refrigerant recovery
48
mode
Undened outdoor unit
49
error
Fo
oE
Cool: compressor and outdoor fan stops
operation, while indoor fan operates; Heat:
compressor, outdoor fan and indoor fan stop
operation.
Refrigerant recovery
it for maintenance.
1. Outdoor ambient temperature exceeds the
operation range of unit (eg: less than-20
more than 60
heating);
2. Failure startup of compressor?
3. Are wires of compressor not connected
tightly?
4. Is compressor damaged?
5.
Is main board damaged?
. The Serviceman operates
o
o
C for cooling; more than 30oC for
C or
54
Installation and Maintenance
Page 58
9. Maintenance
Service Manual
Analysis or processing of some of the malfunction display:
1. Compressor discharge protection
Possible causes: shortage of refrigerant; blockage of air filter; poor ventilation or air flow short pass for condenser; the system has
noncondensing gas (such as air, water etc.); blockage of capillary assy (including lter); leakage inside four-way valve causes incorrect
operation; malfunction of compressor; malfunction of protection relay; malfunction of discharge sensor; outdoor temperature too high.
Processing method: refer to the malfunction analysis in the above section.
2. Low voltage overcurrent protection
Possi ble cause: Sudden drop of supply voltage.
3. Communication malfunction
Processing method: Check if communication signal cable is connected reliably.
4. Sensor open or short circuit
Processing method: Check whether sensor is normal, connected with the corre sponding position on the controller and if damage of lead
wire is found.
5. Compressor over load protection
Possible causes: insufcient or too much refrigrant; blockage of capillary and increase of suction temp.; improper running of compressor,
burning in or stuck of bearing, damage of discharge valve; malfunction of protector.
Processing method: adjust refrigerant amount; replace the capillary; replace the compressor; use universal meter to check if the contactor
of compress or is ne when it is not overheated, if not replace the protector.
6. System malfunction
ieoverload protection.When tube temperature (Check the temperature of outdoor heat exchanger when cooling and check the temperature
of indoor heat exchanger when heating) is too high, protectionwill beactivated.
Possi ble causes: Outdoor temperature is too high when cooling; insufcient outdoor air circulation; refrigerant ow malfunction.
please refer to the malfunction analysis in the previous section for handling method .
7. IPM module protection
Processing method:Once the module malfunction happens,if it persists for a long time and can not be selfcanceled, cut off the power and
turn off the unit, and then re-energize the unit again after about 10 min.After repeating the procedure for sever times, if the malfunction still
exists,replace the module.
Installation and Maintenance
55
Page 59
9. Maintenance
9.2 Procedure of Troubleshooting
1. 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 dened abnormal?
Malfunction diagnosis process:
Start
Service Manual
Is there jumper cap on the mainboard?
Yes
Is the jumper cap inserted correctly
and tightly?
Yes
No
No
No
Assemble the jumper
cap with the same model
Is malfunction
eliminated
No
Insert the jumper
cap tightly
Is malfunction
eliminated
Appearance of the
jumper cap
Yes
56
Replace the jumper cap with
the same model
Is malfunction
eliminated
No
Replace the mainboard
with the same model
End
Yes
Yes
Installation and Maintenance
Page 60
9. Maintenance
Service Manual
2. Communication malfunction E6
Main detection points:
● Check if the connection wire and the built-in wiring of indoor and outdoor unit are connected well and without damage;
● If the communication circuit of indoor mainboard is damaged? If the communication circuit of outdoor mainboard (AP1) is damaged?
Malfunction diagnosis process:
Start
Malfunction of
circuit is
detected with
control board
AP1 voltage
If the malfunction
is removed?
If the unit is operation
normal before
Y
Check built-in wiring
of indoor and
outdoor unit
Y
N
If the wiring is
damaged?
N
Check communication
circuit of outdoor unit
Problem of
communication
circuit
malfunction
Y
Y
N
Replace outdoor
mainboardAP11
N
Check connection
wire of indoor and
outdoor unit with
circuit diagram
Connection
correct?
Check connection
wire of indoor and
outdoor unit with
circuit diagram
If the malfunction
is removed?
Y
Note: method for checking the communication circuit of outdoor unit: cut off the communication wires of indoor/outdoor unit, and
then measure the voltage between COM and N of the control board of outdoor unit (DC notch, about 56V)
Installation and Maintenance
N
Replace indoor
board
If the
malfunction is
N
End
removed?
Y
Y
57
Page 61
9. Maintenance
Service Manual
3. IPM protection H5 , over-phase current of compressor P5
(AP1 hereinafter refers to the control board of the outdoor unit)
Main detection points:
(1) compressor COMP terminal (2) power supply voltage (3) compressor (4) charging amount of refrigerant (5) air inlet and air outlet
of indoor/outdoor unit
Malfunction diagnosis process:
Turn on the unit
after energization
Check the connection
protection occurs after the unit has
Whether IPM
operated for a while?
Y
Whether
the voltage between
terminal L and terminal N
of XT is within 210AVC~
250VAC?
N
Correctly connect the wires of
compressor according to the
electric wiring diagram, and
then turn on the unit
Y
between the control board
and the compressor by
referring to the electric
wiring diagram
Check whether wires
of compressor (UVW) are connected
correctly
N
protection occurs after the unit has
1. Whether the heat exchangers of indoor unit and outdoor unit are
dirty? Whether the radiation is affected because the unit is
2. When indoor fan and outdoor unit are operate normally?
4. Whether the pressure is because there's too much refrigerant?
Whether IPM
operated for a while?
Y
covered by the objects?
3. Whether the system pressure is too high?
Whether there's
abnormal phenomenons
described as above?
N
N
Y
Check the power
supply voltage and
make the power voltage
resume to the range
of 210VAC~250VAC
Correct it one by one
according to the Service
Manual, and then turn on
the unit.
Measure the resistance value
among three terminals (UVW)
of compressor with a resistance
measuring meter.
resistance value of three terminals
of compressor and the copper pipe
with resistance measuring meter
N
Y
Whether the
are almost the same.
Y
Measure the resistance
between three terminals (UVW)
Whether the
resistance value is more than
500ohm?
N
Replace the
compressor
58
Whether the unit
can operate normally?
N
Y
Replace control
board
End
Y
Installation and Maintenance
Page 62
9. Maintenance
Service Manual
4. Overload protection of compressor H3, high discharge temperature protection of compressor E4
(AP1 hereinafter refers to the control board of the outdoor unit)
Main detection points:
(1) electronic expansion valve (2) expansion valve terminal (3) charging amount of refrigerant (4) overload protector
Malfunction diagnosis process:
After the unit
de-energized
for 20min
N
Replace
overload
protector SAT
If the overload protector SAT
iswell connected?
Under ambient temperature, test the
resistance of overload protector with
ohmic meter resistance value 1000Ω
If the wiring terminal FA of electron
expansion is well connected?
The resistance value of
rst 4 lead foot and the
fth lead foot is similar, less
than 100Ω
Replace EKV
coil of electron
expansion valve
Remove
malfunction?
N
Connect wire
N
well with wiring
diagram
Installation and Maintenance
N
Check refrigerant, if there is
leakage, please refer to
specication
Remove
malfunction?
N
Replace
control board
AP1
End
Y
59
Page 63
9. Maintenance
5. Malfunction of Temperature Sensor F1, F2
Main detection points:
(1) connection terminal (2) temperature sensor (3) main board
Malfunction diagnosis process:
Start
Service Manual
Is the wiring terminal between the
temperature sensor and the controller
loosened or poorly contacted?
No
No
Is there short circuit due to trip-
over of the parts
No
No
Is the temperature sensor normal
according to the resistance table?
Yes
Insert the temperature
sensor tightly
Is malfunction
eliminated
Yes
Make the parts upright
Is malfunction
eliminated
No
Yes
Yes
60
Yes
No
Replace the mainboard with
the same model.
End
Replace it with a
temperature sensor with
the same model
Is malfunction
eliminated
Yes
Installation and Maintenance
Page 64
Overload protection,
9. Maintenance
Service Manual
6. High temperature and overload protection (E8)(AP1 below means control board of outdoor unit)
Main detection points:
(1) outdoor temperature (2) fan (3)air inlet and air outlet of indoor/outdoor unit
Malfunction diagnosis process:
high temperature
prevention protection
Is the outdoor ambient temperature
higher than 53℃？
N
After the complete unit is disconnected
from the power for 20mins
Is the radiation of indoor unit
and outdoor unit is not good?
N
Check whether the outdoor
fan operates normally?
Y
Normal protection. Please operate
it when the outdoor ambient
Y
temperature is improved.
Improve the unit's
Y
radiation environment.
N
Check whether the fan terminal
OFAN is connected well;
Measure any two terminal with
the ohmmeter and resistance is less
than 1000ohm.
Replace the control board
End
Replace the fan capacitor C1
Replace the outdoor fan
Installation and Maintenance
61
Page 65
9. Maintenance
7. 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 dened abnormal?
Malfunction diagnosis process:
Start
Turn power off for
1minute,the turn
back on
Service Manual
U8 is still
displayed
Yes
The zero-cross detection circuit
of the mainboard is dened
abnormal.Replace the mainboard
with the same model
End
No
The unit returns to normal.
Conclusion:U8 is displayed due to
power off/on while the
capacitor discharges slowly.
62
Installation and Maintenance
Page 66
No
9. Maintenance
Service Manual
8. Start-up failure LC (following AP1 for outdoor unit control board)
Main detection points:
(1) compressor wire (2) compressor (3) charging amount of refrigerant
Malfunction diagnosis process:
Power on the unit
Is stop time of the compressor
longer than 3 minutes?
Yes
Does startup fail?
Yes
Are the wires for the compressor connected
correctly? Is connection sequence right?
Yes
Replace the control panel AP1
If the fault is eliminated?
No
Restart it up after
3 minutes
Connect the wires as
No
per the connection
diagram
Installation and Maintenance
No
Replace the
compressor
Yes
End
63
Page 67
9. Maintenance
9. Desynchronization diagnosis for compressor H7
(AP1 hereinafter refers to the control board of the outdoor unit)
Main detection points:
(1) system pressure (2) power supply voltage
Malfunction diagnosis process:
Service Manual
N
Synchronism after
energize the unit
and start it
N
If the stop time of
compressor is more
than 3min
If the compressor wire
COMP(UVW) is well
connected, the connection
sequenceforwards to clockwise
Connect
wire well
control board
Y
Remove
malfunction?
Replace
compressor
Y
direction?
Y
Replace
AP1
End
Synchronism
occurred during
operation
If the outdoor fan
works normally?
Y
If the radiating of unit
is well?
N
If the input voltage of
unit is normal?
Y
If the refrigerant is
too much?
Replace
control board
AP1
Remove
malfunction?
N
Replace
compressor
Check if the fan
terminal OFAN is
N
connected well
Improve the radiating
of unit (clean heat
Y
N
Y
exchanger and
increase ventilation)
Start to run until the
power resume normal
voltage
Charge the refrigerant
with service manual
Replace fan
capacitor C1
Replace
outdoor fan
64
End
Installation and Maintenance
Page 68
9. Maintenance
Service Manual
10. Malfunction of Overcurrent Protection E5
Main detection points:
● Is the supply voltage unstable with big uctuation?
● Is the supply voltage too low with overload?
● Hardware trouble?
Malfunction diagnosis process:
Start
Is the supply voltage unstable
with big uctuation?
No No
Yes Yes
Normal uctuation should be within 10 %
of the rated voltage on the nameplate
Is malfunction
eliminated
Is the supply voltage too low
with overload?
No
Is the indoor / outdoor
heat exchanger dirty,or are the air inlet
and outlet blocked?
No
The fan is abnormal? Fan
speed is too low or fan doesn’t rotate
No No
Measure the current of live wire on
the main board with a clamp ampere
meter. Is the current higher than the
value of the overcurrent protection?
Yes
Yes
Yes
Adjust the supply voltage to maintain it
within normal range
No
Yes
Clean the indoor and outdoor heat
exchangers and remove the blockage
of air inlet and outlet
No
Check the motor and reinstall the
motor to have the fan run normally
No
Replace the mainboard with the same
model
No
Is malfunction
eliminated
Is malfunction
eliminated
Is malfunction
eliminated
Is malfunction
eliminated
Yes
Yes
Yes
Yes
Is there blockage inside the system?
(Filth blockage, ice plug, greasy
blockage, the cut off valve hasn’t been
opened completely)
Is the compressor running abnormally?
Is there abnormal sound or oil leakage;
Is the temperature of the shell too high,
Replace the mainboard
Installation and Maintenance
No
etc.?
No
with the same model
End
Yes
Flush the heat exchangers with high
pressure nitrogen
No
Yes
Replace the compressor
Is malfunction
eliminated
Is malfunction
eliminated
Yes
Yes
65
Page 69
9. Maintenance
11. Malfunction of Blocked Protection of IDU Fan Motor H6
Main detection points:
● Smoothly Is the control terminal of PG motor connected tightly?
● Smoothly Is the feedback interface of PG motor connected tightly?
● The fan motor can't operate?
● The motor is broken?
● Detection circuit of the mainboard is defined abnormal?Malfunction
diagnosis process:
Start
Service Manual
While power is off stir the blade
with a tool to see whether the
blade rotates smoothly
Yes
No
Check if the connection of PG
motor feedback terminal is rm
Yes
Check if the connection of PG
motor control terminal is rm
Yes
No
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
Yes
Yes
No
No
Is malfunction
eliminated
No
Insert the control terminal
of PG motor tightly
Is malfunction
eliminated
No
Reinstall the blade
and motor correctly
Is malfunction
eliminated
66
more than 50V within 1 min after
Measure the voltage of this foot to
neutral wire on the mainboard
Turn on the unit again; measure
whether the output voltage on
control terminal for PG motor is
the louvers are opened
Yes
No
No
Replace the mainboard
with the same model
End
Yes
Is the motor started up
No
Replace PG motor
Is malfunction
eliminated
Yes
Yes
Installation and Maintenance
Page 70
9. Maintenance
Service Manual
12. Capacity charging malfunction PU
(AP1 below means control board of outdoor unit)Main detection points:
Main detection points:
(1) wiring board XT (2) reactor Malfunction diagnosis process:
Put through the power
to turn on the unit and
then wait for 1min
Measure the voltage at both
ends of electrolytic capacitor
with DC voltmeter.
voltage higher than 85% of
Is the
rated voltage?
Y
Replace the control
board
There's malfunction
for the voltage
detection circuit of
control board.
N
Measure the AC voltage between
terminal L and terminal N of wiring
board XT.
Turn off the power
Is the voltage is
within ±10% of rated
voltage?
and maintain the
power supply to
N
make the voltage
resume to ±10%
of rated voltage.
Put through the
power and turn
on the unit again
Eliminate
malfunction
Y
Y
Wait for 20min after turning off the
power or use DC voltmeter to measure
the voltage at both ends of capacity
until it's lower than 20V.
Check the connection status
of reactor (L in the electric
wiring diagram).
N
Installation and Maintenance
Is the wire connection
of reactor L normal?
Y
Replace the control
board
End
Connect the wires
of reactor L according
N
to the electric wiring
diagram.
Put through the
power and turn
on the unit again.
N
Eliminate
malfunction
Y
67
Page 71
9. Maintenance
13. Malfunction of detecting plate(WIFI) JF
check if the connection wire
are correctly connected
Service Manual
Start
Yes
Replace the detecting
plate with the same model
Replace the mainboard
with the same model
No
Is malfunction
eliminated
Yes
The end
68
Installation and Maintenance
Page 72
9. Maintenance
Service Manual
9.3 Troubleshooting for Normal Malfunction
1. Air Conditioner can't be Started Up
Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting
No power supply, or poor connection
for power plug
Wrong wire connection between
indoor unit and outdoor unit, or poor
connection for wiring terminals
Electric leakage for air conditioner
Model selection for air switch is
improper
Malfunction of remote controller
2. Poor Cooling (Heating) for Air Conditioner
After energization, operation indicator isnt bright
and the buzzer can't give out sound
Under normal power supply circumstances,
operation indicator isnt bright after energization
After energization, room circuit breaker trips off at
once
After energization, air switch trips off Select proper air switch
After energization, operation indicator is bright,
while no display on remote controller or buttons
have no action.
Conrm whether it's due to power failure. If yes,
wait for power recovery. If not, check power
supply circuit and make sure the power plug is
connected well.
Check the circuit according to circuit diagram
and connect wires correctly. Make sure all wiring
terminals are connected rmly
Make sure the air conditioner is grounded reliably
Make sure wires of air conditioner is connected
correctly
Check the wiring inside air conditioner. Check
whether the insulation layer of power cord is
damaged; if yes, place the power cord.
Replace batteries for remote controller
Repair or replace remote controller
Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting
Set temperature is improper Observe the set temperature on remote controller Adjust the set temperature
Rotation speed of the IDU fan
motor is set too low
Filter of indoor unit is blocked Check the lter to see it's blocked Clean the lter
Installation position for indoor unit
and outdoor unit is improper
Refrigerant is leaking
Malfunction of 4-way valve Blow cold wind during heating Replace the 4-way valve
Malfunction of capillary
Flow volume of valve is insufcient
Malfunction of horizontal louver Horizontal louver can't swing Refer to point 3 of maintenance method for details
Malfunction of the IDU fan motor The IDU fan motor can't operate
Malfunction of the ODU fan motor The ODU fan motor can't operate Refer to point 4 of maintenance method for details
Malfunction of compressor Compressor can't operate Refer to point 5 of maintenance method for details
Small wind blow Set the fan speed at high or medium
Check whether the installation postion is proper
according to installation requirement for air
conditioner
Discharged air temperature during cooling is
higher than normal discharged wind temperature;
Discharged air temperature during heating is lower
than normal discharged wind temperature; Units
pressure is much lower than regulated range
Discharged air temperature during cooling is
higher than normal discharged wind temperature;
Discharged air temperature during heating is lower
than normal discharged wind temperature; Unitt
pressure is much lower than regulated range. If
refrigerant isnt leaking, part of capillary is blocked
The pressure of valves is much lower than that
stated in the specication
Adjust the installation position, and install the
rainproof and sunproof for outdoor unit
Find out the leakage causes and deal with it. Add
refrigerant.
Replace the capillary
Open the valve completely
Refer to troubleshooting for H6 for maintenance
method in details
3. Horizontal Louver can't Swing
Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting
Wrong wire connection, or poor
connection
Stepping motor is damaged Stepping motor can't operate Repair or replace stepping motor
Main board is damaged
Installation and Maintenance
Check the wiring status according to circuit diagram
Others are all normal, while horizontal louver can't
operate
Connect wires according to wiring diagram to
make sure all wiring terminals are connected
rmly
Replace the main board with the same model
69
Page 73
9. Maintenance
4. ODU Fan Motor can't Operate
Possible causes Discriminating method (air conditioner status) Troubleshooting
Wrong wire connection, or poor
connection
Capacity of the ODU fan motor is
damaged
Power voltage is a little low or high
Motor of outdoor unit is damaged
5. Compressor can't Operate
Possible causes Discriminating method (air conditioner status) Troubleshooting
Wrong wire connection, or poor
connection
Capacity of compressor is
damaged
Power voltage is a little low or high
Coil of compressor is burnt out
Cylinder of compressor is blocked Compressor can't operate Repair or replace compressor
Check the wiring status according to circuit diagram
Measure the capacity of fan capacitor with an
universal meter and nd that the capacity is out of
the deviation range indicated on the nameplate of
fan capacitor.
Use universal meter to measure the power supply
voltage. The voltage is a little high or low
When unit is on, cooling/heating performance is bad
and ODU compressor generates a lot of noise and
heat.
Check the wiring status according to circuit diagram
Measure the capacity o f fan capacitor with an
universal meter and nd that the capacity is out of
the deviation range indicated on the nameplate of
fan capacitor.
Use universal meter to measure the power supply
voltage. The voltage is a little high or low
Use universal meter to measure the resistance
between compressor terminals and it's 0
Connect wires according to wiring diagram to
make sure all wiring terminals are connected
rmly
Replace the capacity of fan
Suggest to equip with voltage regulator
Change compressor oil and refrigerant. If no
better, replace the compressor with a new one
Connect wires according to wiring diagram to
make sure all wiring terminals are connected
rmly
Replace the compressor capacitor
Suggest to equip with voltage regulator
Repair or replace compressor
Service Manual
6. Air Conditioner is Leaking
Possible causes Discriminating method (air conditioner status) Troubleshooting
Drain pipe is blocked Water leaking from indoor unit Eliminate the foreign objects inside the drain pipe
Drain pipe is broken Water leaking from drain pipe Replace drain pipe
Wrapping is not tight
7. Abnormal Sound and Vibration
Possible causes Discriminating method (air conditioner status) Troubleshooting
When turn on or turn off the unit,
the panel and other parts will
expand and There's abnormal
sound
When turn on or turn off the unit,
There's abnormal sound due
to ow of refrigerant inside air
conditioner
Foreign objects inside the indoor
unit or therere parts touching
together inside the indoor unit
Foreign objects inside the outdoor
unit or therere parts touching
together inside the outdoor unit
Short circuit inside the magnetic
coil
Abnormal shake of compressor Outdoor unit gives out abnormal sound
Abnormal sound inside the
compressor
Water leaking from the pipe connection place of
indoor unit
There's the sound of "PAPA"
Water-running sound can be heard
There's abnormal sound fro indoor unit
There's abnormal sound fro outdoor unit
During heating, the way valve has abnormal
electromagnetic sound
Abnormal sound inside the compressor
Wrap it again and bundle it tightly
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.
70
Installation and Maintenance
Page 74
11. Removal Procedure
Service Manual
11.1 Removal Procedure of Indoor Unit
Step Procedure
Before disassemble
Turn off the air conditioner and disconnect the
power before disassemble the air conditioner.
1. Remove lter
Caution: discharge the refrigerant
completely before removal.
Filter
Hold the handle on the lter, pull it upwards to let
the clasp at the top part of the lter loose, push it
forwards and then the lter can be pulled out.
2. Remove upper and lower guide louver
Push out the plug pin on upper and lower guide louver,
Bend the guide louver with hand and then separate
the guide louver from the crank shaft of step motor to
remove it.
Handle
71
Guide Louver
Installation and Maintenance
Page 75
11. Removal Procedure
Service Manual
Step Procedure
3.Remove panel
Panel rotation
Panel
Display
Open the front panel; separate the panel rotation shaft
from the groove xing the front panel and then removes
the front panel.
Note:
The display of some models is fixed on the panel;
unscrew the screws fixing the display on the panel
before removing the panel.
4.Remove electric box cover 2
Remove the screws on the electric box cover 2 to
remove the electric box cover 2.
Screws
Screw
5.Remove front case sub-assy
Remove the screws xing front case.
Note:
a
(1) Open the screw caps before removing the screws
around the air outlet.
(2) The quantity of screws fixing the front case subassy is different for different models.
Loosen the clasps at left, middle and right sides of front
case. Life the front case sub-assy upwards to remove
it.
b
Electric box cover 2
Screws
Front case
sub-assy
Left clasp Middle clasp Right clasp
Screws
Screw caps
Installation and Maintenance
72
Page 76
11. Removal Procedure
Step Procedure
6.Remove electric box assy
Remove the screw xing electric box assy.
a
Service Manual
Step motor
Cut off the wire binder and pull out the
①
indoor tube temperature sensor.
Screw off one grounding screw.
②
Remove the wiring terminals of motor, cold plasma
③
generator and stepping motor.
Remove the electric box assy.
④
Screw off the screws that are locking each.
⑤
b
Rotate the electric box assy. Twist off the screws that
are locking the wire clip and loosen the power cord.
Remove the wiring terminal of power cord. Lift up the
main board and take it off.
Grounding
screw
Wire binder
Power cord
Indoor tube
temperature sensor
Screws
Electric box assy
Main board
Wiring terminal
of motor
Wiring terminal
of cold plasma
generator
Wiring terminal
of stepping motor
73
C
Instruction:Some wiring terminal of this products is with
lock catch and other devices.The pulling method is as
below:
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 rst(holder
is not available for some wiring terminal).hold the
connector and then pull the terminal.
Screw Wire clip
Circlip Holder
Connector
Soft sheath
Installation and Maintenance
Page 77
11. Removal Procedure
Service Manual
Step Procedure
7.Remove panel
Remove 3 screws xing evaporator assy.
a
At the back of the unit, Loosen the clasp of the
b
connection pipe clamp and then remove the connection
pipe clamp.
First remove the left side of evaporator from
the groove of bottom shell and then remove
c
the right side from the clasp on the bottom
shell.
Clasp
Connection pipe
Adjust the position of connection pipe on evaporator
slightly and then lift the evaporator upwards to remove
d
it.
Installation and Maintenance
74
Page 78
11. Removal Procedure
Step Procedure
8. Remove motor and cross ow fan
a
Remove 3 screws xing motor clamp and then remove
the motor clamp.
Loose the screws (2-3 circles) used for xing the
cross ow fan, pull right to pull out the motor.
Service Manual
Screw
Screw
b
9. Remove swing motor
Screw off the screws that are locking the swing
motor and take the motor off.
75
Screws
Installation and Maintenance
Page 79
11. Removal Procedure
Service Manual
11.2 Removal Procedure of Outdoor Unit
09K
NOTE:Take heat pump for example.
Step Procedure
1 . R e m o v e c a b l e c r o s s p l a t e s u b - a s s y a n d v a l v e
cover
Remove the screws connecting cable cross
plate sub-assy and right side plate, to remove
the cable cross plate sub-assy. Remove the
screw xing valve cover, to remove the cover.
2. Remove top cover
Caution: discharge the refrigerant
completely before removal.
cable cross
plate sub-assy
valve cover
Remove connection screws connecting
the top panel with the front panel and the
right side plate, and then remove the top
panel.
3. Remove grille, protective 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.
Remove the screws xing protective grille and then
remove the protective grille.
top cover
protective
grille
Installation and Maintenance
grille
panel
76
Page 80
11. Removal Procedure
Step Procedure
4.Remove right side plate, left side plate
Remove the screws xing right side plate, left side
plate and then remove them.
left side plate
5.Remove axial ow blade
Service Manual
right side plate
Remove the nut xing the blade and then
remove the axial ow blade.
6.Remove motor and motor support
axial ow blade
77
Remove the screws xing motor and then remove
the motor.
Remove the screws xing motor support and then
remove the motor support.
motor
motor support
Installation and Maintenance
Page 81
11. Removal Procedure
Service Manual
Step Procedure
7. Remove electric box assy
Remove the screws xing electric box assy; cut off
the tieline; pull out each wiring terminal; lift the
electric box assy upwards to remove it.
Note:
When pulling out the wiring terminal, pay attention
to loose the clasp and don’t pull it so hard.
8. Remove clapboard
Remove the screws xing clapboard and then
remove the clapboard.
electric box assy
9. Remove 4-way valve assy
Unsolder the welding joints connecting the 4-way
valve assy with capillary sub-assy, compressor and
condenser; remove the 4-way valve.Cooling only unit
removes Discharge Tube and Inhalation Tube
Note:
Before unsoldering the welding joint, wrap the 4-way
valve with a wet cloth completely to avoid damage
to the valve caused by high temperature.
Installation and Maintenance
clapboard
4-way
valve assy
78
Page 82
11. Removal Procedure
Step Procedure
10.Remove liquid valve and gas valve
Unsolder the welding joint connecting the valve with
capillary and condenser; unsolder the welding joint
connecting the gas valve and air-return pipe;
remove the 2 screws xing the gas valve to remove
the gas valve.
Unsolder the welding joint connecting the liquid
valve and Y-shaped pipe; remove the 2 screws
xing the liquid valve to remove the liquid valve.
Note:
Before unsoldering the welding joint, wrap the gas
valve with a wet cloth completely to avoid damage
to the valve caused by high temperature.
11.Remove compressor
Service Manual
liquid valve
gas valve
Remove the 3 footing screws of the compressor
and remove the compressor.
Remove the screws xing valve support and then
remove the valve support.
compressor
valve support
79
Installation and Maintenance
Page 83
11. Removal Procedure
Service Manual
12K
NOTE:Take heat pump for example.
Step Procedure
1. Remove big handle
a Before disassamble
Remove 3 connection screw xing cable cross
plate 2 and then remove the cable cross plate 2.
b
Remove 1 connection screw xing valve cover
and then remove the valve cover.
2. Remove top cover
Remove the screws xing top panel and then remove
the top panel.
Cable cross plate 2
Valve Cover
Top cover
Installation and Maintenance
80
Page 84
11. Removal Procedure
Step Procedure
3.Remove grille and protective 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.
Remove the screws fixing protective grille and then
remove the protective grille.
Service Manual
Protective
grille
4.Remove right side plate and left side plate
Remove the screws xing right side plate and left side
plate and then remove them.
5.Remove axial ow blade
Grille
Left side plate
Panel
Right side plate
81
Axial ow blade
Remove the nut xing the blade and then remove the
axial ow blade.
Installation and Maintenance
Page 85
11. Removal Procedure
Service Manual
Step Procedure
6. Remove motor and motor support
Remove the screws xing motor and then remove the
motor.
Remove the screws fixing motor support and then
remove the motor support.
7. Remove electric box assy
Motor
Motor support
Remove the screws xing electric box assy; cut off the
tieline; pull out each wiring terminal; lift the electric box
assy upwards to remove it.
Note:
When pulling out the wiring terminal, pay attention to
loose the clasp and don’t pull it so hard.
8. Remove clapboard
Electric box assy
Remove the screws xing clapboard and then remove
the clapboard.
Installation and Maintenance
Clapboard
82
Page 86
11. Removal Procedure
Step Procedure
9.Remove 4-way valve assy
Unsolder the welding joints connecting the 4-way
valve assy with capillary sub-assy,compressor and
condenser; remove the 4-way valve.
Note:
Before unsoldering the welding joint, wrap the 4-way
valve with a wet cloth completely to avoid damage to
the valve caused by high temperature.
10.Remove liquid valve and gas valve
Service Manual
4-way valve assy
Unsolder the welding joint connecting the valve with
capillary and condenser; unsolder the welding joint
connecting the gas valve and air-return pipe;
Remove the 2 screws fixing the gas valve to remove
the gas valve.
Unsolder the welding joint connecting the liquid valve
and Y-shaped pipe; remove the 2 screws fixing the
liquid valve to remove the liquid valve.
Note:
Before unsoldering the welding joint, wrap the gas
valve with a wet cloth completely to avoid damage to
the valve caused by high temperature.
11.Remove compressor
Remove the 3 footing screws of the compressor and
remove the compresso;
Remove the screws fixing valve support and then
remove the valve support.
Liquid valve
Gas valve
Compressor
83
Installation and Maintenance
Page 87
11. Removal Procedure
Service Manual
18K
NOTE:Take heat pump for example.
Step Procedure
1. Remove big handle, valve cover and top cover
Remove the screw connecting the big handle and right
side plate, and then remove the big handle.
a
Remove the screw connecting the valve cover and right
side plate, and then remove the valve cover.
Big handle
Valve cover
Remove the screws connecting the top cover with outer
b
case, right side plate and left side plate; lift the top
cover upwards to remove it.
2. Remove grille and outer case
Remove the 4 screws connecting the grille and outer
case, and then remove the panel grille.
Top cover
Installation and Maintenance
Grille
84
Page 88
11. Removal Procedure
Step Procedure
Remove the screws connecting the outer case with
motor support, isolation plate and chassis; lift the outer
case upwards; loosen the clasps of outer case with
right side plate and left side plate, and then remove the
outer case.
Service Manual
Outer case
3. Remove right&left side plate
Remove the screws connecting the right side plate with
electric box assy, valve support, chassis and condenser
side plate, and then remove the right side plate.
a
Right side plate
85
Remove the screws connecting the left side plate with
b
chassis, and then remove the left side plate.
Left side plate
Installation and Maintenance
Page 89
11. Removal Procedure
Service Manual
Step Procedure
4. Remove axial ow blade
Remove the nut xing axial ow blade and then remove
the blade.
a
Axial ow fan
Remove the 6 screws xing the motor and then remove
the motor.
Remove the 2 screws connecting the motor support
and chassis, and then loosen the stopper to remove the
b
motor support.
5. Remove electric box
Motor support
Fan motor
Electric box
Remove the screws fixing the electric box sub-assy;
loosen the wire bundle; pull out the wiring terminals and
then pull the electric box upwards to remove it.
Installation and Maintenance
86
Page 90
11. Removal Procedure
Step Procedure
6. Remove isolation plate
Remove the 2 screws connecting the isolation plate
and condenser side plate; remove the 3 screws
connecting the isolation plate and chassis, and then
remove the isolation plate.
Service Manual
Isolation plate
7. Remove 4-way valve assy
Unsolder the welding joints connecting the 4-way
valve assy with capillary sub-assy, compressor and
condenser; remove the 4-way valve.
Note:
Before unsoldering the welding joint, wrap the 4-way
valve with a wet cloth completely to avoid damage to
the valve caused by high temperature.
8. Remove compressor
4-way valve assy
Compressor
87
Remove the 3 foot nuts xing compressor and then lift
the compressor upwards to remove the compressor
and damping cushion.
Note:
Keep the ports of discharge pipe and suction pipe from
foreign objects.
Installation and Maintenance
Page 91
11. Removal Procedure
Service Manual
Step Procedure
9. Remove condenser sub-assy
Remove the screws connecting the support
(condenser) and condenser assy, and then remove the
a
support(condenser).
Support
Remove the 2 screws xing the condenser and chassis,
b
and then lift the condenser upwards to remove it
Condenser sub-assy
Chassis sub-assy
Installation and Maintenance
88
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11. Removal Procedure
24K
NOTE:Take heat pump for example.
Step Procedure
1. Remove handle and valve cover
Twist off the screws used for xing the handle, pull
the handle upward to remove it.Loosen the screws
xing the valve cover and then remove it.
Service Manual
handle
valve cover
2. Remove top cover
Remove connection screws connecting the top
cover plate with the front panel and the right
side plate,and then remove the top cover.
3. Remove front grill
top panel
grille
89
Remove the screws connecting the front grill and
the front panel. Remove the front grill.
Installation and Maintenance
Page 93
11. Removal Procedure
Service Manual
Step Procedure
4.Remove front side plate and front panel
Remove screws connecting front side plate, outer
a
case and chassis,and then remove the front side
plate.
front side plate
Remove screws xing front panel,chassis and motor
b
support, and then remove the front panel.
5.Remove right side plate
front panel
right side plate
Remove screws connecting right side plate and
chassis, valve support and condenser, and then
remove the right side plate.
Installation and Maintenance
90
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11. Removal Procedure
Step Procedure
6. Remove axial ow blade
Remove nut on blade with wrench,and then remove
the axial ow blade.
axial ow blade
Service Manual
7. Remove electric box and reproof electric box
Remove screws xing electric box,cut off the tielien
with scissors, pull out the wiring terminal and then lift
up the electric box to remove it.
Twist off the screws on reproof electric box and then
remove the reproof electric box.
8. Remove motor and motor support
electric box
91
Twist off the tapping screws xingthe motor, pull
out the pin of leading wire for motor and then remove
the motor.
motor
Installation and Maintenance
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11. Removal Procedure
Service Manual
Step Procedure
Twist off the tapping screws xing the motor support,
b
pull it upwards and then remove the motor support.
9.Remove isolation sheet
motor support
Twist off the screws connecting isolation sheet and
end plate of condenser and chassis, and then remove
the isolation sheet.
10.Remove 4-way valve
Unsolder the pipe line between compressor,
condenser, gas and liquid valve, and then remove the
4-way valve. (note: release all refrigerant before
unsoldering).
isolation sheet
4-way valve
Installation and Maintenance
Capillary Sub-assy
92
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11. Removal Procedure
Step Procedure
11.Remove gas valve and liquid valve
Twist off the 2 bolts xing the valve sub-assy.
Unsolder the soldering joint between gas valve and
air-return pipe and then remove the gas valve.
(note: when unsoldering the soldering joint, wrap the
gas valve with wet cloth completely to avoid the
damage to valve, and release all refrigerant
completely at rst). Unsolder the soldering joint
between liquid valve and connection pipe of liquid
valve, and then remove the liquid valve.
Service Manual
gas valve
liquid valve
12.Remove compressor
Twist off the 3 foot nuts on compressor and then
remove the compressor.
13.Remove left side plate
compressor
93
Twist off the screws connecting the left side plate and
chassis with screwdriver, and then remove the left
side plate.
left side plate
Installation and Maintenance
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11. Removal Procedure
Service Manual
Step Procedure
14.Remove condenser sub-assy
Remove the chassis sub-assy and condenser
sub-assy.
chassis sub-assy
Installation and Maintenance
94
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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
temperature
（℉）
61 60.8 16 69/70 69.8 21 78/79 78.8 26
62/63 62.6 17 71/72 71.6 22 80/81 80.6 27
64/65 64.4 18 73/74 73.4 23 82/83 82.4 28
66/67 66.2 19 75/76 75.2 24 84/85 84.2 29
68 68 20 77 77 25 86 86 30
Fahrenheit
（℉）
Celsius
（℃）
Fahrenheit display
temperature
（℉）
Fahrenheit
（℉）
Celsius
（℃）
Fahrenheit display
temperature
（℉）
Ambient temperature
Fahrenheit display
temperature
（℉）
32/33 32 0 55/56 55.4 13 79/80 78.8 26
34/35 33.8 1 57/58 57.2 14 81 80.6 27
36 35.6 2 59/60 59 15 82/83 82.4 28
37/38 37.4 3 61/62 60.8 16 84/85 84.2 29
39/40 39.2 4 63 62.6 17 86/87 86 30
41/42 41 5 64/65 64.4 18 88/89 87.8 31
43/44 42.8 6 66/67 66.2 19 90 89.6 32
45 44.6 7 68/69 68 20 91/92 91.4 33
46/47 46.4 8 70/71 69.8 21 93/94 93.2 34
48/49 48.2 9 72 71.6 22 95/96 95 35
50/51 50 10 73/74 73.4
52/53 51.8 11 75/76 75.2 24 99 98.6 37
54 53.6 12 77/78 77 25
Fahrenheit
(℉)
Celsius
（℃）
Fahrenheit display
temperature
（℉）
Fahrenheit
（℉）
Celsius
（℃）
23 97/98 96.8 36
Fahrenheit display
temperature
（℉）
Fahrenheit
（℉）
Fahrenheit
（℉）
Service Manual
Celsius
（℃）
Celsius
（℃）
Appendix 2: Conguration of Connection Pipe
1.Standard length of connection pipe(More details please refer to the specifications.)
2.Min. length of connection pipe is 3m (10ft).
3.Max. length of connection pipe and max. high difference.(More details please refer to the specifications.)
4.The additional refrigerant oil and refrigerant charging required after prolonging connection pipe
● After the length of connection pipe is prolonged for 10m (33ft) at the basis of standard length, you should add 5ml (.17oz) of refrigerant
oil for each additional 5m (16ft) of connection pipe.
● The calculation method of additional refrigerant charging amount (on the basis of liquid pipe):
● Basing on the length of standard pipe, add refrigerant acc
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
Liquid pipe Gas pipe
1/4” 3/8” or 1/2”
1/4” or 3/8” 5/8” or 3/4”
1/2” 3/4” or 7/8”
ording to the requirement as shown in the table. The additional refrigerant
Outdoor unit throttle
Heat Pump oz/ft (g/m)
(20)
.22
(50)
.54
(120)
1.29
95
5/8” 1" or 1 1/4”
1.29
(120)
Installation and Maintenance
Page 99
Appendix:
The length is equal
s
Smooth surface
Downwards
Pipe
Shaper
Pipe
Pipe
Service Manual
Appendix 3: Pipe Expanding Method
Note:
Improper pipe expanding is the main cause of refrigerant leakage.Please expand
the pipe according to the following steps:
A:Cut the pip
● Conrm 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.
C:Put on suitable insulating pipe.
Pipe cutter
Leaning Uneven Burr
D:Put on the union nut
● Remove the union nut on the indoor connection pipe and outdoor valve; install
the union nut on the pipe.
E:Expand the port
● Expand the port with expander.
Note:
●
"A" is different according to the diameter, please refer to the sheet below:
Outer diameter mm(in)
Max Min
Ф6 - 6.35 (1/4") 1.3(.05) 0.7(.03)
Ф9.52 (3/8”) 1.6(.06) 1.0(.04)
Ф12 - 12.70 (1/2”) 1.8(.07) 1.0(.04)
Ф16 - 15.88 (5/8”) 2.4(.1) 2.2(.09)
A mm(in)
Union pipe
Expander
Hard
mold
Pipe
F:Inspection
● Check the quality of expanding port. If there is any blemish, expand the port
again according to the steps above.
Installation and Maintenance
Improper expanding
damaged
leaning
surface
crack uneven
thicknes
96
Page 100
Appendix:
GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
Add: West Jinji Rd, Qianshan, Zhuhai,Guangdong, China, 519070
Tel: (+86-756) 8522219
Fax: (+86-756) 8669426
E-mail: global@cn.gree.com www.gree.com
For product improvement, specifications and appearance in this manual are subject to change without prior notice.
Service Manual
Appendix 4: List of Resistance for Temperature Sensor
Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K)
Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ)
-19 138.10 0 49.02 20 18.75 40 7.97
-18 128.60 2 44.31 22 17.14 42 7.35
-16 115.00 4 40.09 24 15.68 44 6.79
-14 102.90 6 36.32 26 14.36 46 6.28
-12 92.22 8 32.94 28 13.16 48 5.81
-10 82.75 10 29.90 30 12.07 50 5.38
-8 74.35 12 27.18 32 11.09 52 4.99
-6 66.88 14 24.73 34 10.20 54 4.63
-4 60.23 16 22.53 36 9.38 56 4.29
-2 54.31 18 20.54 38 8.64 58 3.99
Resistance Table of Tube Temperature Sensors for Indoor and Outdoor (20K)
Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ)
-19 181.40 20 25.01 60 4.95 100 1.35
-15 145.00 25 20.00 65 4.14 105 1.16
-10 110.30 30 16.10 70 3.48 110 1.01
-5 84.61 35 13.04 75 2.94 115 0.88
0 65.37 40 10.62 80 2.50 120 0.77
5 50.87 45 8.71 85 2.13 125 0.67
10 39.87 50 7.17 90 1.82 130 0.59
15 31.47 55 5.94 95 1.56 135 0.52
Resistance Table of Discharge Temperature Sensor for Outdoor(50K)
Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ) Temp(oC) Resistance(kΩ)
-30 911.400 10 98 50 17.65 90 4.469
-25 660.8 15 77.35 55 14.62 95 3.841
-20 486.5 20 61.48 60 12.17 100 3.315
-15 362.9 25 49.19 65 10.18 105 2.872
-10 274 30 39.61 70 8.555 11 0 2.498
-5 209 35 32.09 75 7.224 115 2.182
0 161 40 26.15 80 6.129 120 1.912
5 125.1 45 21.43 85 5.222 125 1.682
97
Installation and Maintenance
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