GREE VIR09DCT230V1AK VIREO GEN3 9,000 BTU .75 Ton Inverter Slim Duct Ceiling Cassette Mini Split Air Conditioner Instructions
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Service Manual
Models:
DUCT09HP230 V1 BD
DUCT12HP230V1BD
DUCT18HP230V1BD
GFH(21)DB-D3DNA1A/I
DUCT24HP230V1BD
(Refrigerant R410A)
GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
Service Manual
Table of Contents
Part
Ⅰ
: Technical Information
.......................................................................1
1. Summary
......................................................................................................................1
2. Specifications
..........................................................................................................2
3. Outline Dimension Diagram
........................................................................5
4. Refrigerant System Diagram
......................................................................6
5. Electrical Part
...........................................................................................................7
5.1 Wiring Diagram .................................................................................................................7
5.2 PCB Printed Diagram .......................................................................................................8
6. Function and Control
........................................................................................9
6.1 Introduction of Control Panel ............................................................................................9
6.2 Introduction of Control Panel ..........................................................................................11
Part
Ⅱ
: Installation and Maintenance
.................................................13
7. Notes for Installation and Maintenance
..........................................13
8. Installation Manual
............................................................................................16
8.1 Preparations for Installation ............................................................................................17
8.2 Location for Installation ..................................................................................................17
8.3 Wiring Requirements ......................................................................................................18
9. Installation Instructions
................................................................................20
10. Wiring Work
..........................................................................................................28
11. Maintenance
.........................................................................................................30
11.1 Error Code List .............................................................................................................30
11.2 Troubleshooting for Main Malfunction ...........................................................................38
11.3 Maintenance Method for Normal Malfunction ...............................................................42
12. Exploded View and Parts List
..............................................................44
11. Removal Procedure
.......................................................................................48
Table of Contents
Service Manual
Part
Ⅰ
: Technical Information
1. Summary
Outdoor Unit
DUCT09HP230V1BD
DUCT12HP230V1BD
DUCT18HP230V1BD
GFH(21)DB-D3DNA1A/I
DUCT24HP230V1BD
Technical Information 1
2
Service Manual
2. Specifications
Parameter
Model
Product Code
Power
Supply
Rated Voltage
Rated Frequency
Phases
Cooling Capacity
Heating Capacity
Cooling Power Input
Heating Power Input
Cooling Current Input
Heating Current Input
Air flow volume(SH/H/M/L/SL)
Dehumidifying Volume
Fan Type
Fan Diameter-height
Fan Motor Speed
Fan Motor Power Output
Fan Motor Power Input
Motor Full Load Amp(FLA)
Fan Motor Capacitor
Evaporator Material
Evaporator Pipe Diameter
Evaporator Number of Rows-Fin Pitch
Evaporator Length(L)XHeight(H)XWidth(W)
Fuse Current
Sound Pressure Level(SH/H/M/L/SL)
Sound Power Level(SH/H/M/L/SL)
Dimension of Outline(LXWXH)
Dimension of Carton Box(LXWXH)
Dimension of Package(LXWXH)
Net Weight
Gross Weight
Liquid pipe
Gas Pipe(to indoor unit)
Unit
V~
Hz
Btu/h
Btu/h
KW
KW
A
A
CFM
Pint/h inch rpm
W
W
A
μF inch
inch
A dB (A) dB (A) inch inch inch
Ib
Ib inch inch
The above data is subject to change without notice. Please refer to the nameplate of the unit.
DUCT09HP230V1BD
CF022N1420
208/230
60
1
9000
9500
0.09
0.09
0.4
0.4
324/253/212/188/-
1.69
Centrifugal
Φ 8~4 7/32
860/670/570/510
150
/
0.4
/
Aluminum fin-copper tube
Φ 5/16
2
18 1/2X12 1/8X1/2
5
38/35/30/26/-
52/49/44/40/-
32 43/64X29 11/16X11 13/16
35 13/64X31 11/16X13 37/64
35 5/16X31 13/16X14 11/16
70.6
83.8
Φ 3/8
Φ 1/4
Value
DUCT12HP230V1BD
CF022N1400
208/230
60
1
12000
13000
0.09
0.09
0.4
0.4
324/253/212/188/-
1.69
Centrifugal
Φ 8~4 7/32
940/770/670/570
150
/
0.4
/
Aluminum fin-copper tube
Φ 5/16
2
470X308X38
5
38/35/30/26/-
52/49/44/40/-
32 43/64X29 11/16X11 13/16
35 13/64X31 11/16X13 37/64
35 5/16X31 13/16X14 11/16
70.6
83.8
Φ 1/2
Φ 1/4
Technical Information
Service Manual
Parameter
Model
Product Code
Power
Supply
Rated Voltage
Rated Frequency
Phases
Cooling Capacity
Heating Capacity
Cooling Power Input
Heating Power Input
Cooling Current Input
Heating Current Input
Air flow volume(SH/H/M/L/SL)
Dehumidifying Volume
Fan Type
Fan Diameter-height
Fan Motor Speed
Fan Motor Power Output
Fan Motor Power Input
Motor Full Load Amp(FLA)
Fan Motor Capacitor
Evaporator Material
Evaporator Pipe Diameter
Evaporator Number of Rows-Fin Pitch
Evaporator Length(L)XHeight(H)XWidth(W)
Fuse Current
Sound Pressure Level(SH/H/M/L/SL)
Sound Power Level(SH/H/M/L/SL)
Dimension of Outline(LXWXH)
Dimension of Carton Box(LXWXH)
Dimension of Package(LXWXH)
Net Weight
Gross Weight
Liquid pipe
Gas Pipe(to indoor unit)
Unit
V~
Hz
Btu/h
Btu/h
KW
KW
A
A
CFM
Pint/h inch rpm
W
W
A
μF inch
inch
A dB (A) dB (A) inch inch inch
Ib
Ib inch inch
DUCT18HP230V1BD
CF022N1390
208/230
60
1
18000
19000
0.16
0.16
0.7
0.7
589/412/312/288/-
2
Centrifugal
Φ 8~4 7/32
990/700/530/490
200
/
0.7
/
Aluminum fin-copper tube
Φ 5/16
3
29 41/64X12 1/8X2 1/2
5
39/33/29/26/-
49/43/39/36/-
44 31/64X29 11/16X11 13/16
47 21/64X37 57/64X13 37/64
47 7/16X32 1/64X14 11/64
92.6
106.9
Φ 5/8
Φ 3/8
Value
GFH(21)DB-D3DNA1A/I
CF022N1410
208/230
60
1
21000
23000
0.16
0.16
0.7
0.7
589/412/312/288/-
1.0
Centrifugal
Φ 8~4 7/32
990/700/530/490
200
/
0.7
/
Aluminum fin-copper tube
Φ 5/16
3
29 41/64X12 1/8X2 1/2
5
39/33/29/26/-
49/43/39/36/-
44 31/64X29 11/16X11 13/16
47 21/64X37 57/64X13 37/64
47 7/16X32 1/64X14 11/64
92.6
106.9
Φ 5/8
Φ 3/8
The above data is subject to change without notice. Please refer to the nameplate of the unit.
Technical Information 3
4
Parameter
Model
Unit Value
DUCT24HP230V1BD
Product Code
Power
Supply
Rated Voltage
Rated Frequency
Phases
Cooling Capacity
Heating Capacity
Cooling Power Input
Heating Power Input
Cooling Current Input
Heating Current Input
Air flow volume(SH/H/M/L/SL)
Dehumidifying Volume
Fan Type
Fan Diameter-height
Fan Motor Speed
Fan Motor Power Output
Fan Motor Power Input
Motor Full Load Amp(FLA)
Fan Motor Capacitor
Evaporator Material
Evaporator Pipe Diameter
Evaporator Number of Rows-Fin Pitch
Evaporator Length(L)XHeight(H)XWidth(W)
Fuse Current
Sound Pressure Level(SH/H/M/L/SL)
Sound Power Level(SH/H/M/L/SL)
Dimension of Outline(LXWXH)
Dimension of Carton Box(LXWXH)
Dimension of Package(LXWXH)
Net Weight
Gross Weight
Liquid pipe
Gas Pipe(to indoor unit)
V~
Hz
Btu/h
Btu/h
KW
KW
A
A
CFM
Pint/h inch rpm
W
W
A
μF inch
inch
A dB (A) dB (A) inch inch inch
Ib
Ib inch inch
The above data is subject to change without notice. Please refer to the nameplate of the unit.
CF022N1430
208/230
60
1
24000
27000
0.21
0.21
0.9
0.9
736/559/453/406/-
2.5
Centrifugal
Φ 8~4 7/32
1050/800/650/580
200
/
0.7
/
Aluminum fin-copper tube
Φ 5/16
2
29 41/64X12 1/8X2 1/2
5
39/33/29/26/-
49/43/39/36/-
44 31/64X29 11/16X11 13/16
47 21/64X37 57/64X13 37/64
47 7/16X32 1/64X14 11/64
92.6
106.9
Φ 5/8
Φ 3/8
Service Manual
Technical Information
Service Manual
3. Outline Dimension Diagram
DUCT09HP230V1BD DUCT12HP230V1BD
D
A
E
DUCT18HP230V1BD GFH(21)DB-D3DNA1A/I DUCT24HP230V1BD
C
C
D
E
Technical Information
Model
09/12K
18/21/24K
A
32 43/64
44 31/64
A
B
29 11/16
29 11/16
C
11 13/16
11 13/16
D
31 11/32
43 7/64
E
27 9/16
39 3/8
5
4. Refrigerant System Diagram
Service Manual
6 Technical Information
Service Manual
5. Electrical Part
5.1 Wiring Diagram
●Instruction
Symbol
WH
YE
Symbol Color
White
Yellow
RD Red
YEGN Yellow/Green
VT Violet
Symbol
GN
BN
BU
BK
OG
Symbol Color
GREEN
Brown
Blue
Black
Orange
Symbol
COMP
Name
Compressor
Grouding wire
● Outdoor Unit
52207(03
6(1625
78%(7(03
6(1625
:,5('
&21752//(5
$3
.
&$3
5220
-803
.
78%( &200$18$/
$3φ35,17('&,5&8,7%2$5'
0$*1(7,&
5,1*
/ %8
1δ1ε
%.
&20287
/ %1
$&/
3(
<(*1
'&02725 3803 :$7(5'7&7
7(50,1$/
%/2&.
1
:+%8
;7
%.
5'%1
*1<(*1
*
(/(&75,&%2;
&211(&7,1*
&$%/(
0
)$102725 *
1RWH0RWRUJURXQG
RQO\DSSOLHVWRWKH
LURQVKHOOPRWRU
0
:$7(53803
02725
/,48,'/(9(/
6:,7&+
,1'22581,7
600007060236
These circuit diagrams are subject to change without notice, please refer to the one supplied with the unit.
Technical Information 7
8
14
5.2 PCB Printed Diagram
● TOP VIEW
13
12
11
10
● BOTTOM VIEW
Service Manual
1 2 3
4
1
2
3
4
Interface of dry contact
Wired controlller terminal
Dispaly
Jumper cap
11
12
13
14
5
6
7
8
9
10
Water overflow protection
Interface of tube temperature sensor
Interface of ambient temperature sensor
Water pump
Terminal with indoor unit communication
Neutral wire terminal
Fuse
Live wire terminal
Neutral wire terminal
Wiring terminal for DC motor
9 8 7 6 5
Technical Information
Service Manual
6. Function and Control
After putting through the power, air conditioner will give out a sound and indicators on control panel will be on. After that, you operate the air conditioner through remote controller or control panel.
6.1 Introduction of Control Panel
1.1 Display
Fig.1 Appearance of wired controller
1.2 Instructions for Related Displayed Symbols
9
10
11
7
8
5
6
No.
1
2
3
4
15
16
17
12
13
14
18
19
Symbols Instructions
Up and down swing function
Left and right swing function
Fresh air function
Sleep function
Auto mode
Cooling mode
Dry mode
Fan mode
Heating mode
Health function
I-Demand function
Absence function
Shielding status (Buttons, temperature, ON/OFF, mode or energy saving is shielded by remote monitor)
Current set fan speed
Memory function (Memory in power failure)
DRED function
Save function
X-fan function
Remind to clean the filter
Technical Information 9
10
1.3 Button Grapics
20
21
22
23
1
Timer on status
Gate card pulled-off status or nobody presented status
Quiet function
Function lock
2 10 3
4 5 6 7 8
Fig. 2 Button graphics
9
1.4 Function Instructions of Buttons
2
6
3
4
5
8
No.
1
7
9
10
Button name Button Function
FAN
̈
∧
ON/OFF/BACK
SWING
Z
¥
MENU/OK
MODE
Remote control receiver window
Set low speed, medium speed,high speed, turbo and auto speed.
(1) Set temperature
(2) Set parameter
(3) Move option cursor
(1) Turn on or turn off unit
(2) Return to last page
Set up&down swing and set left&right swing
(1) Set related function on or off
(2) Move option cursor
(3) Set parameter
(1) Enter menu page
(2) Confirm setting
Set auto, cooling, dry, fan and heating modes for indoor unit.
Service Manual
Technical Information
Service Manual
6.2 Introduction of Control Panel
1.Basic function of system
(1)Cooling mode
(1) Under this mode, fan and swing operates at setting status. Temperature setting range is 16~30 O C.
(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 16~30 O C.
(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 16~30 O C.
(2) Working condition and process for heating mode:
When turn on the unit under heating mode, indoor unit enters into cold air prevention status. When the unit is stopped or at OFF status, and indoor unit has been started up just now, the unit enters into residual heat-blowing status.
(4)Working method for AUTO mode:
1.Working condition and process for AUTO mode: a.Under AUTO mode, standard heating Tpreset=20 O C and standard cooling Tpreset=25 O C. The unit will switch mode automatically according to ambient temperature.
2.Protection function a. During cooling operation, protection function is same as that under cooling mode.
b. During heating operation, protection function is same as that under heating mode.
3. Display: Set temperature is the set value under each condition. Ambient temperature is (Tamb.-Tcompensation) for heat pump unit and Tamb. for cooling only unit.
4. If theres 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 cant be memorized).
After power recovery, the unit will be turned on automatically according to memory content.
(7) Health function(only for the model with this 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.
Technical Information 11
Service Manual
(8)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 cant 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.
(9) SE control mode
The unit operates at SE status.
(10) 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.
(11) 8ºC heating function
Under heating mode, you can set 8ºC heating function by remote controller. The system will operate at 8ºC set temperature.
(12) 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.
12 Technical Information
Service Manual
Part
Ⅱ
: Installation and Maintenance
7. Notes for Installation and Maintenance
Safety Precautions:
Important!
Please read the safety precautions carefully before installation and maintenance.
The following contents are very important for installation and maintenance.
Please follow the instructions below.
●The installation or maintenance must accord with the instructions.
●Comply with all national electrical codes and local electrical codes.
●Pay attention to the warnings and cautions in this manual.
●All installation and maintenance shall be performed by distributor or qualified person.
●All electric work must be performed by a licensed technician according to local regulations and the instructions given in this manual.
●Be caution during installation and maintenance. Prohibit incorrect operation to prevent electric shock, casualty and other accidents.
10. If the power cord or connection wire is not long enough, please get the specialized power cord or connection wire from the manufacture or distributor. Prohibit prolong the wire by yourself.
11. For the air conditioner without plug, an air switch must be installed in the circuit. The air switch should be all-pole parting and the contact parting distance should be more than
1/8 inch.
12. Make sure all wires and pipes are connected properly and the valves are opened before energizing.
13. Check if there is electric leakage on the unit body. If yes, please eliminate the electric leakage.
14. Replace the fuse with a new one of the same specification if it is burnt down; dont 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:
Warnings
Electrical Safety Precautions:
1. Cut off the power supply of air conditioner before checking and maintenance.
2. The air condition must apply specialized circuit and prohibit share the same circuit with other appliances.
3. The air conditioner should be installed in suitable location and ensure the power plug is touchable.
4. Make sure each wiring terminal is connected firmly during installation and maintenance.
5. Have the unit adequately grounded. The grounding wire cant 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 cant be pressed by hard objects.
9. If power cord or connection wire is broken, it must be replaced by a qualified person.
1. Select the installation location according to the requirement of this manual.(See the requirements in installation part)
2. Handle unit transportation with care; the unit should not be carried by only one person if it is more than 44.09lb.
3. When installing the indoor unit and outdoor unit, a suffi cient fixing bolt must be installed; make sure the installation support is firm.
4. Ware safety belt if the height of working is above 78 3/4 inch.
5. Use equipped components or appointed components during installation.
6. Make sure no foreign objects are left in the unit after fin ishing installation.
Refrigerant Safety Precautions:
1. Avoid contact between refrigerant and fire as it generates poisonous gas; Prohibit prolong the connection pipe by welding.
2. Apply specified refrigerant only. Never have it mixed with any other refrigerant. Never have air remain in the refrigerant line as it may lead to rupture or other hazards.
3. Make sure no refrigerant gas is leaking out when installation is completed.
4. If there is refrigerant leakage, please take sufficient measure to minimize the density of refrigerant.
5. Never touch the refrigerant piping or compressor without wearing glove to avoid scald or frostbite.
Improper installation may lead to fire hazard, explosion, electric shock or injury.
Installation and Maintenance
13
Service Manual
Safety Precautions for Installing and Relocating the Unit:
To ensure safety, please be mindful of the following precautions.
Warnings
1. When installing or relocating the unit, be sure to keep the refrigerant circuit free from air or substances other than the specified 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 unqualified 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 flammable 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 fire.
8.Use the specified 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 insufficient capacity, wrong wire connections and insecure wire terminals may cause electric shock or fire.
14
Installation and Maintenance
Service Manual
Main Tools for Installation and Maintenance
1. Level meter, measuring tape 2. Screw driver 3. Impact drill, drill head, electric drill
4. Electroprobe 5. Universal meter 6. Torque wrench, open-end wrench, inner hexagon spanner
7. Electronic leakage detector 8. Vacuum pump 9. Pressure meter
10. Pipe pliers, pipe cutter 11. Pipe expander, pipe bender 12. Soldering appliance, refrigerant container
Installation and Maintenance
15
Service Manual
16
8. Installation Manual
Installation procedures
Start installation
Preparation before installation
Read the requirements for electric connection select installation location
Prepare tools
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
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)
Make the bound pipes pass through the wall hole and then
connect outdoor unit
Connect pipes of outdoor unit
Connect wires of outdoor unit
Neaten the pipes
Vacuum pumping and leakage detection
Check after installation and test operation
Finish installation
Note: this flow is only for reference; please find the more detailed installation steps in this section.
Installation and Maintenance
Service Manual
8.1 Preparations for Installation
NOTICE!
Product graphics are only for reference. Please refer to actual products. Unspecified measure unit is mm(in.)
Please use the supplied standard fittings listed below as instructed.
No. Name Appearance Q'ty Usage
1 Wired Controller 1 To control the indoor unit
2
3
Drain Hose Assembly
Special Nut
4 M10X8 Nut with Washer
5 M10 Nut (M10X8.4 Nut)
6
9
10
7
8
M10 Washer (Spring Washer
M10X2.6)
Insulation
Insulation
Sponge
Fastener
2
8
1
1
1
1
4
4
4
To connect with the hard PVC drain pipe
To be used for connecting the refrigerant pipe
To be used together with the hanger bolt for installing the unit.
To be used together with the hanger bolt for installing the unit.
To be used together with the hanger bolt for installing the unit.
To insulate the gas pipe
To insulate the liquid pipe
To insulate the drain pipe
To fasten the sponge
8.2 Location for Installation
(1) The appliance shall not be installed in the laundry.
(2) The top holder must be strong enough to support unit’s weight.
(3) Drain pipe can drain water out easily.
(4) There is no obstacle at inlet or outlet. Please ensure good air circulation.
(5) In order to make sure the space for maintenance, please install the indoor unit according to the dimension described below.
(6) Keep the unit away from heating source, inflammable gas or smoke.
(7) This is a concealed ceiling type unit.
(8) Indoor unit, outdoor unit, power cord and electric wire should stay at least 1m(39-3/8 in.) from the TV set and radio. Otherwise, these electrical appliances may have image interference and noise. (Even if the distance is 1m(39-3/8 in.), when there is strong electric wave, noise may still occur.)
Installation and Maintenance
17
Service Manual
18
Fig 3.2.1
(1) Installation of the unit must be in accordance with National Electric Codes and local regulations.
(2) Improper installation will affect unit’s performance, so do not install the unit by yourself.
Please contact local dealer to arrange professional technicians for the installation.
(3) Do not connect power until all installation work is finished.
8.3 Wiring Requirements
(1) Power Cord Size and Air Switch Capacity
Model
DUCT09HP230V1BD
DUCT12HP230V1BD
DUCT18HP230V1BD
GFH(21)DB-D3DNA1A/I
DUCT24HP230V1BD
Power Supply
208/230V-1ph-60Hz
Fuse
Capacity(A)
5
5
5
5
5
Installation and Maintenance
Service Manual
(1) Use copper wire only as unit’s power cord. Operating temperature should be within it value.
(2) If the power cord is more than 15m (49-1/4 ft.) long, please increase properly the sectional area of power cord to avoid overload, which may cause accident.
(3) Above selection requirements: Power cord size is based on BV single-core wire (2~4pc) at
40°C(104°F) Cambient temperature when laying across plastic pipe. Air switch is D type and used at 40°C(104°F). If actual installation condition varies, please lower the capacity appropriately according to the specifications of power cord and air switch provided by manufacturer.
(4) Install cut-off device near the unit. The minimum distance between each stage of cut-off device should be 3mm(1/8 in.) (The same for both indoor unit and outdoor unit).
Installation and Maintenance
19
9. Installation Instructions
NOTICE!
These duct type indoor units are limited to be installed for one room.
9.1 Installation of Indoor Unit
9.1.1 Outline Dimension and Installation Spots
Equip with a inspection hatch after lifting the unit. For the convenience of maintenance, the service port should be on one side of the electric box and below unit’s lower level.
Service Manual
Fig 9.1.1
Below are dimensions of A, B, C, etc. for different models:
Model
DUCT09HP230V1BD
DUCT12HP230V1BD
DUCT18HP230V1BD
GFH(21)DB-D3DNA1A/ I
DUCT24HP230V1BD
A
740
(29-1/8)
1040
(40-15/16)
9.1.2 Suspend the indoor unit
B
500
(19-11/16)
500
(19-11/16)
C
830
(32-11/16)
1130
(44-1/2)
D
300
(11-13/16)
300
(11-13/16)
Unit:mm(in.)
E
754
(29-11/16)
754
(29-11/16)
F
700
(27-9/16)
1000
(39-3/8)
(1) Drill bolt holes and install bolts
1) Stick the reference cardboard on the installation position; drill 4 holes according to the hole site on the cardboard as shown in fig 4.1.3; diameter of drilling hole is according to the diameter of expansion bolt and the depth is 60-70mm(2-3/8~2-3/4 in.), as shown in fig 4.1.4.
Unit: mm(in.)
G
700
(27-9/16)
700
(27-9/16)
20
Installation and Maintenance
Service Manual
Fig 4.1.3 Fig 4.1.4
2) Insert the M10 expansion bolt into the hole and then knock the nail into the bolt, as shown in fig 4.1.5, and then remove the pape r pattern. shown in fig 4.1.5, and
NOTICE!
The length of bolt depends on the installation height of the unit, bolts are field supplied.
Fig 9.1.5
(2) Install the indoor unit temporarily
Assemble suspension bolt on the expansion bolt, attach the hanger bracket to the suspension bolt.
Be sure to fix it securely by using a nut and washer from upper and lower sides of the hanger bracket. The washer fixing plate will prevent the washer from falling.
GFH(09)~ ( 24 ) DA-D3DNA1A/I are as follows
NOTICE!
Fig 9.1.6
1) Before operation, please prepare all pipelines (connection pipe, drainage hose) and wires (connection wire for wired controller, connection wire for indoor unit).
2) When drilling holes on ceiling (air return outlet or air outlet), you can need to reinforce the ceiling to prevent vibration. For detailes, please consult user or builder.
3) If the strength of the ceiling is not good, please install a beam bracket, and then put the unit on t he beam bracket.
(4) Adjust the unit to the right position.
(5) Check the level of the unit
After the indoor unit is installed, remember to check the horizontal status of the whole unit. It should be horizontal from front to back and slant 1% from left to right, following the drainage direction.
Installation and Maintenance
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Service Manual
22
Fig9.1.8
(6) Remove the washer locating plate and then tighten the nut on it.
9.2 Refrigerant Pipe Connection
(1) Aim the flaring port of copper pipe at the center of screwed joint and then tighten the flaring nut with hand as shown in fig 9.2.1.
(2) Tighten the flaring nut with torque wrench.
Torque for tightening nut
Pipe diameter mm(in.)
Torque(N·m)
Φ 6.35(1/4)
Φ 9.52(3/8)
15 ~ 30
35 40
Φ 12.7(1/2)
Φ 15.9(5/8)
Φ 19.05(3/4)
45 50
60 65
70 75
Fig 9.2.1
(3) Use pipe bend when bending the pipe and the bending angle should not be too small.
(4) Wrap the connection pipe and joint with sponge and then tie them firmly with tape.
9.3 Drainage Pipe Installation and Drainage System Testing
9.3.1 Notice for Installation of Drain Pipe
(1) The drainage pipe should be short and the gradient downwards should be at least 1%~2% in order to drain
condensation water smoothly.
(2) The diameter of drainage hose should be bigger or equal to the diameter of drainage pipe joint.
(3) Install drainage pipe according to the following fig and arrange insulation to the drainage pipe (Fig 9.3.1).
Improper installation may lead to water leakage and damp the furniture and other things in the room.
(4) You can buy normal hard PVC pipe used as the drainage pipe. During connection, insert the end of PVC pipe into the drainage hole and then tighten it with drainage hole and wire binder. Can’t connect the
drainage hole and drainage hole with glue.
(5) When the drainage pipelines are used for several units, the position of pipeline should be about 100mm(4in ) .
lower than the drainage port of each unit. In this case, thicker pipes should be applied.
Fig 9.3.1
Installation and Maintenance
Service Manual
9.3.2 Drainage pipe installation
(1) Insert the drain hose into the drain hole and tighten it with tapes, as shown in Fig 9.3.2.
(2) Tighten the pipe clamp, with the distance between screw nut and hose smaller than 4mm(1/8in .).
① metal clamp(accessory) drain hose(accessory)
(3) Use sealing plate to make the pipe clamp and hose insulated, as shown in Fig.9.3.3. metal clamp(accessory)
thermal sponge(accessory) Unit: mm(in.)
Fig 9.3.2 Fig 9.3.3
(4) When connecting several drain pipes, follow the instruction as indicated in Fig 9.3.4.
Choose the drain collecting pipe that matches with unit capacity.
Unit: mm(in.)
Fig 9.3.4
9.3.5
Fig 9.3.6
Installation and Maintenance
Fig 9.3.6
Fig 9.3.7
Fig 9.3.8
Fig 9.3.7
Fig 9.3.8
23
Service Manual
Model
DUCT09HP230V1BD
DUCT12HP230V1BD
DUCT18HP230V1BD
GFH(21)DB-D3DNA1A/I
DUCT24HP230V1BD
A
150 č 5-7/8 G
Fig 9.3.9
B
850 F 33-1/2 G
C
Unit: mm(in.)
800 F 31-1/2 G
(10) Drain pipes should have a downward slope of at least 1%~2%, in order to prevent pipes from sagging, install hanger bracket at intervals of 1000~1500mm(39-3/8~59 in.).
Unit: mm(in.) �
Fig 9.3.10
9.3.3 Test of Drainage System
◆ Models with water pump
(1) Please test drainage system after electric work is finished.
Inject approximately 1L purified water to drain pan from air vent, ensure that not to splash electrical components (e.g. water pump. etc.).
the water over the
1) Spray 1L water on evaporator with sprayer.
2) In case of commissioning finished, please energize the IDUs and switch to cooling or dry mode, meanwhile , the water pump operates, you can check the draining through the transparent part of drain socket.
3) If communication wire is not connected, communication malfunction “E6” will occur after 3min of energizing.
In this case, the water pump operates automatically. Check if the water pump drains normally drains normally drains normally through drainage port. The water pump will stop automatically after running for 1min
(2) During the test, please carefully check the drainage joint, make sure no any leakage occur.
(3) It is strongly recommend to do the drain test before ceiling decoration.
◆ Models without water pump
24
Installation and Maintenance
Service Manual
9.3.11
②
③
④
⑤
9.4
NOTICE!
①
9.4.1 Shape and Size of Air Outlet and Air-return Opening
Unit: mm(in.)
�
Fig 9.4.1 Air Outlet
Installation and Maintenance
25
Service Manual
26
Model
DUCT09HP230V1BD
DUCT12HP230V1BD
DUCT18HP230V1BD
GFH(21)DB-D3DNA1A/I
DUCT24HP230V1BD
9.4.2 Installation of Air-out Duct
Fig 9.4.2 Air-return Opening
Size of Air Outlet
A
195
(7-5/8)
B
451
(17-3/4)
195
(7-5/8)
751
(29-9/16)
C
25
(1)
25
(1)
Size of Air-return Opening
D
264
(10-3/8)
E
660
(26)
F
29
(1-1/8)
264
(10-3/8)
960
(37-3/4)
29
(1-1/8)
Fig 9.4.5
5
6
7
8
9.4.3
1
2
4
Installation and Maintenance
Service Manual
9.4.7
9.4.4
1
2
9.5
NOTICE
Installation and Maintenance
9.4.8
9.4.7
4
5
6
9.4.9
9.4.8
9.4.9
27
Service Manual
10. Wiring Work
10.1
10.0.1
3) Shape the tail of wire into ring by needle nose plier, and keep the gauge of ring in accordance with screw.
4) Use the screwdriver for tightening the terminal.
(2) The connection of stranded wire (as shown in fig 10.1.2)
1) Strip about 10mm (3/8 in.) insulation of the end of stranded wire by stripping and cutting tool.
2) Loosen the wiring screws on terminal board.
3) Insert the wire into the ring tongue terminal and tighten by crimping tool.
4) Use the screwdriver for tightening the terminal.
Unit: mm(in.)
28
Fig 10.1.1 Fig 10.1.2
Installation and Maintenance
Service Manual
10.2 Power Cord Connection
NOTICE!
æ Every unit should be equipped with a circuit breaker for short-circuit and overload protection.
During operation, all indoor units connected to the same outdoor unit system must be
O therwise, the unit can’t operate normally.
kept energized status.
N(1) 2 white
(blue) black
3 red
(brown) green
(yellowgreen)
Outdoor unit connection
Fig 10.2.1
NOTICE!
Indoor unit quantity n is according to the outdoor unit capacity.
° For units with single-phase power supply.
(1) Detach the electric box lid.
(2) Let the power cord pass through the wiring through-holes.
(3) Fix the power card with wiring clamp.
(4) The wire diameter of power cord can’ t be less than 18AWG.
Installation and Maintenance
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30
Service Manual
11. Maintenance
11.1 Error Code List
NO.
Malfunction
Name
Display Method of Indoor Unit
Indicator Display (during
Dual-8
Code
Display blinking, ON 0.5s and OFF
0.5s)
Operation
Indicator
Cool
Indicator
Heating
Indicator
1
2
High pressure protection of system
Antifreezing protection
E1
E2
A/C status Possible Causes
During cooling and drying operation, except indoor fan operates, all loads stop operation.
During heating operation, the complete unit stops.
Possible reasons:
1. Refrigerant was superabundant;
2. Poor heat exchange (including filth blockage of heat exchanger and bad radiating environment );
Ambient temperature is too high.
During cooling and drying operation, compressor and outdoor fan stop while indoor fan operates.
1. Poor air-return in indoor unit;
2. Fan speed is abnormal;
3. Evaporator is dirty.
3
4
5
6
System block or refrigerant leakage
E3
High discharge temperature protection of compressor
E4
Overcurrent protection
Communication
Malfunction
E5
E6
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.
1.Low-pressure protection
2.Low-pressure protection of system
3.Low-pressure protection of compressor
Please refer to the malfunction analysis
(discharge protection, overload).
1. Supply voltage is unstable;
2. Supply voltage is too low and load is too high;
3. Evaporator is dirty.
During cooling operation, compressor stops while indoor fan motor operates. During heating operation, the complete unit stops.
Refer to the corresponding malfunction analysis.
7
High temperature resistant protection
E8
8
EEPROM malfunction
EE
9
Limit/ decrease frequency due to high temperature of module
EU
10
Malfunction protection of jumper cap
C5
During cooling operation: compressor will stop while indoor fan will operate. During heating operation, the complete unit stops.
Refer to the malfunction analysis (overload, high temperature resistant).
During cooling and drying operation, compressor will stop while indoor fan will operate;
During heating operation, the complete unit will stop
Replace outdoor control panel AP1
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
Discharging after the complete unit is deenergized for 20mins, check whether the thermal grease on
IPM Module of outdoor control panel AP1 is sufficient and whether the radiator is inserted tightly.
If its no use, please replace control panel
AP1.
1. No jumper cap insert on mainboard.
2. Incorrect insert of jumper cap.
3. Jumper cap damaged.
4. Abnormal detecting circuit of mainboard.
Installation and Maintenance
Service Manual
NO.
Malfunction
Name
Dual-8
Display Method of Indoor Unit
Indicator Display (during blinking,
ON 0.5s and OFF 0.5s)
Code
Display
Operation
Indicator
Cool
Indicator
Heating
Indicator
11
Gathering refrigerant
F 0
12
Indoor ambient temperature sensor is open/short circuited
F1
13
Indoor evaporator temperature sensor is open/short circuited
F2
A/C status Possible Causes
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
During cooling and drying operation, indoor unit operates while other loads will stop; during heating operation, the complete unit will stop operation.
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.
AC stops operation once reaches the setting temperature. Cooling, drying: internal fan motor stops operation while other loads stop operation; heating: AC stop operation
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.
14
15
Outdoor ambient temperature sensor is open/short circuited
Outdoor condenser temperature sensor is open/short circuited
16
Outdoor discharge temperature sensor is open/short circuited
17
18
Limit/ decrease frequency due to overload
Decrease frequency due to overcurrent
F3
F4
F5
F6
F8
During cooling and drying operating, compressor stops while indoor fan operates; During heating operation, the complete unit will stop operation
Outdoor temperature sensor hasnt been connected well or is damaged. Please check it by referring to the resistance table for temperature sensor)
During cooling and drying operation, compressor stops while indoor fan will operate; During heating operation, the complete unit will stop operation.
Outdoor temperature sensor hasnt been connected well or is damaged. Please check it by referring to the resistance table for temperature sensor)
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.
All loads operate normally, while operation frequency for compressor is decreased
1.Outdoor temperature sensor hasnt been connected well or is damaged. Please check it by referring to the resistance table for temperature sensor)
2.The head of temperature sensor hasnt been inserted into the copper tube
Refer to the malfunction analysis (overload, high temperature resistant)
All loads operate normally, while operation frequency for compressor is decreased
The input supply voltage is too low;
System pressure is too high and overload
Installation and Maintenance
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32
Service Manual
NO.
Malfunction
Name
Display Method of Indoor Unit
Indicator Display (during
Dual-8
Code
Display blinking, ON 0.5s and OFF
0.5s)
Operation
Indicator
Cool
Indicator
Heating
Indicator
19
20
Decrease frequency due to high air discharge
Limit/ decrease frequency due to antifreezing
F9
FH
A/C status
All loads operate normally, while operation frequency for compressor is decreased
Overload or temperature is too high;
Refrigerant is insufficient;
Malfunction of electric expansion valve
(EKV)
Possible Causes
All loads operate normally, while operation frequency for compressor is decreased
Poor air-return in indoor unit or fan speed is too low
21
Voltage for
DC bus-bar is too high
PH
During cooling and drying operation, compressor will stop while indoor fan will operate;
During heating operation, the complete unit will stop operation.
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 its normal, theres malfunction for the circuit, please replace the control panel (AP1)
22
Voltage of
DC bus-bar is too low
PL
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 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 its normal, theres malfunction for the circuit, please replace the control panel (AP1)
23
Compressor
Min frequence in test state
P0
24
Compressor rated frequence in test state
P1
25
Compressor maximum frequence in test state
P2
Showing during min. cooling or min. heating test
Showing during nominal cooling or nominal heating test
Showing during max. cooling or max. heating test
Installation and Maintenance
Service Manual
NO.
Malfunction
Name
Display Method of Indoor Unit
Indicator Display (during
Dual-8
Code
Display blinking, ON 0.5s and OFF
0.5s)
Operation
Indicator
Cool
Indicator
Heating
Indicator
26
Compressor intermediate frequence in test state
P3
27
Overcurrent protection of phase current for compressor
P5
A/C status
During cooling and drying operation, compressor will stop while indoor fan will operate;
During heating operation, the complete unit will stop operation.
28
Charging malfunction of capacitor
PU
29
Malfunction of module temperature sensor circuit
P7
30
Module high temperature protection
P8
31
Overload protection for compressor
H3
32
IPM protection
H5
Possible Causes
Showing during middle cooling or middle heating test
Refer to the malfunction analysis
(IPM protection, loss of synchronism protection and overcurrent protection of phase current for compressor.
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
Refer to the part three—charging malfunction analysis of capacitor
Replace outdoor control panel AP1
During cooling operation, compressor will stop while indoor fan will operate; During heating operation, the complete unit will stop
After the complete unit is de-energized for 20mins, check whether the thermal grease on IPM Module of outdoor control panel AP1 is sufficient and whether the radiator is inserted tightly. If its no use, please replace control panel
AP1.
During cooling and drying operation, compressor will stop while indoor fan will operate;
During heating operation, the complete unit will stop operation.
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)
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.
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Service Manual
NO.
33
34
35
36
Malfunction
Name
Internal motor
(fan motor) do not operate
Desynchronizing of compressor
PFC protection
Display Method of Indoor Unit
Indicator Display (during
Dual-8
Code
Display blinking, ON 0.5s and OFF
0.5s)
Operation
Indicator
Cool
Indicator
Heating
Indicator
H6
H7
HC
A/C status Possible Causes
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.
During cooling and drying operation, compressor will stop while indoor fan will operate;
During heating operation, the complete unit will stop operation.
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 rev detecting circuit.
Refer to the malfunction analysis (IPM protection, loss of synchronism protection and overcurrent protection of phase current for compressor.
Refer to the malfunction analysis
Outdoor DC fan motor malfunction
L3
Outdoor DC fan motor malfunction lead to compressor stop operation,
DC fan motor malfunction or system blocked or the connector loosed compressor stop operation and Outdoor fan motor will stop 30s latter , 3 minutes latter fan motor and compressor will restart
To protect the electronical components when detect high power
37 power protection
L9
38
Indoor unit and outdoor unit doesnt match
39
Failure startup
LP
LC
40
Normal communication compressor and Outdoor fan motor cant work
During cooling and drying operation, compressor will stop while indoor fan will operate;
During heating operation, the complete unit will stop operation.
Indoor unit and outdoor unit doesnt match
Refer to the malfunction analysis
41 Defrosting
OFF 3S and blink once
(during blinking,
ON 10s and OFF
0.5s)
Defrosting will occur in heating mode. Compressor will operate while indoor fan will stop operation.
Its the normal state
Installation and Maintenance
Service Manual
NO.
Malfunction
Name
Dual-8
Code
Display
Display Method of Indoor Unit
Indicator Display (during blinking, ON 0.5s and OFF 0.5s)
Operation
Indicator
Cool
Indicator
Heating
Indicator
42
Malfunction of phase current detection circuit for compressor
U1
43
Malfunction of voltage dropping for
DC bus-bar
U3
A/C status
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
44
Malfunction of complete units current detection
U5
Possible Causes
Replace outdoor control panel AP1
Supply voltage is unstable
During cooling and drying operation, the compressor will stop while indoor fan will operate;
During heating operating, the complete unit will stop operation.
Theres circuit malfunction on outdoor units control panel AP1, please replace the outdoor units control panel AP1.
45
The four-way valve is abnormal
U7
If this malfunction occurs during heating operation, the complete unit will stop operation.
1.Supply voltage is lower than AC175V;
2.Wiring terminal 4V is loosened or broken;
3.4V is damaged, please replace 4V.
46
Frequency limiting
(power)
47
Compressor is open-circuited
48
The temperature for turning on the unit is reached
49
Frequency limiting (module temperature)
50
Water overflow protection
E9 The complete unit stops
If the condition of full of water is detected for 8s, water overflow protection will be enabled and wired controller will display E9 and give an alarm; in each mode, if system enters water overflow protection, indoor units will shut down except the water pump and alarm. The capacity output of outdoor units should be adjusted correspondingly.
Installation and Maintenance
35
Service Manual
If malfunction occurs,corresponding code will display and the unit will resume normal until protection or malfunction disappears.
36
Installation and 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 filter); 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
Possible 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: insufficient 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 fine when it is not overheated, if not replace the protector.
6. System malfunction
i.e.overload protection.When tube temperature(Check the temperature of outdoor heat exchanger when cooling and check the temperatur e of indoor heat exchanger when heating) is too high, protection will be activated.
Possible causes: Outdoor temperature is too high when cooling; insufficient outdoor air circulation; refrigerant flow 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
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Service Manual
11.2 Troubleshooting for Main Malfunction
Indoor unit:
1. Malfunction of Temperature Sensor F1, F2
Main detection points:
● Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted?
● Is there short circuit due to trip-over of the parts?
● Is the temperature sensor broken?
● Is mainboard broken?
Malfunction diagnosis process:
Start
Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted?
No
No
Is there short circuit due to tripover of the parts
No
Is the temperature sensor normal according to the resistance table?
Yes
No
No
Replace the mainboard with the same model.
Yes
Insert the temperature sensor tightly
Is malfunction eliminated
Yes
Make the parts upright
Is malfunction eliminated
No
Replace it with a temperature sensor with the same model
Is malfunction eliminated
Yes
Yes
Yes
End
38
Installation and Maintenance
Service Manual
2. Malfunction of Blocked Protection of IDU Fan Motor H6
Start
Turn the fan blades by hand under power-off condition
Whether the fan blades can run smoothly?
No
Yes
Under power-off condition, check whether the wiring terminal between indoor fan and main board is loose.
No No
No
Yes
Connect power and restart the unit.
Test whether the voltage between terminal 1 and terminal 2 of motor interface is within 280~310VDC.
Adjust the motor and blade assembly so that rotor can run smoothly.
Turn unit on to check whether the malfunction is eliminated.
Reinsert the wiring terminal of indoor fan.
Turn unit on to check whether the malfunction is eliminated.
No
It's the malfunction of main board.
Replace a new main board that is of the same model.
Yes
Yes
Yes
Installation and Maintenance
Then check whether the voltage between terminal 2 and terminal 3 of the motor interface is 15VDC.
Yes
Then check whether there is voltage between terminal 2 and terminal 4 of the motor interface.
Yes
It's the malfunction of motor.
Replace a new motor that is of the same model.
No
It's the malfunction of main board.
Replace a new main board that is of the same model.
No
It's the malfunction of main board.
Replace a new main board that is of the same model.
End
39
Service Manual
40
3. Malfunction of Protection of Jumper Cap C5
Main detection points:
● Is there jumper cap on the mainboard?
● Is the jumper cap inserted correctly and tightly?
● The jumper is broken?
● Detectioncircuit of the mainboard isdefined abnormal?
Malfunction diagnosis process:
Start
Is there jumper cap on the mainboard?
No
Assemble the jumper cap with the same model
Appearance of the jumper cap
Yes
Is the jumper cap inserted correctly and tightly?
Yes
No
Replace the jumper cap with the same model
No Is malfunction eliminated
No
Insert the jumper cap tightly
Is malfunction eliminated
Yes
Yes Is malfunction eliminated
No
Replace the mainboard with the same model
End
Yes
Installation and Maintenance
Service Manual
4. Water overflow protection E9
Malfunction diagnosis process:
Error display
Check whether there is water overflow
Yes
Whether the drain pump is running
Yes
No
No
Whether the voltage of liquid level switch terminal is correct?
No
Yes
Whether the voltage
of drain pump terminal is correct?
No
Whether the drain pipe is cleared?
Water flow is smooth?
No
Adjust the drain pipe
Yes
Yes
Replace the main board of indoor unit
Check the liquid level switch
Replace the main board of indoor unit
Check the wiring of drain pump
Check the drain pump.
Installation and Maintenance
41
Service Manual
11.3 Maintenance Method for Normal Malfunction
1. Air Conditioner Cant be Started Up
Possible Causes
No power supply, or poor connection for power plug
Wrong wire connection between indoor unit and outdoor unit, or poor connection for wiring terminals
Discriminating Method (Air conditioner Status)
After energization, operation indicator isnt bright and the buzzer cant give out sound
Under normal power supply circumstances, operation indicator isnt bright after energization
Troubleshooting
Confirm whether its 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 firmly
Electric leakage for air conditioner
After energization, room circuit breaker trips off at once
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.
Model selection for air switch is improper
After energization, air switch trips off Select proper air switch
Malfunction of remote controller
After energization, operation indicator is bright, while no display on remote controller or buttons have no action.
Replace batteries for remote controller
Repair or replace remote controller
2. Poor Cooling (Heating) for Air Conditioner
Possible Causes
Set temperature is improper
Rotation speed of the IDU fan motor is set too low
Filter of indoor unit is blocked
Installation position for indoor unit and outdoor unit is improper
Discriminating Method (Air conditioner Status)
Small wind blow
Check the filter to see its blocked
Check whether the installation postion is proper
Clean the filter
Troubleshooting
Observe the set temperature on remote controller Adjust the set temperature
Set the fan speed at high or medium
Refrigerant is leaking
Malfunction of 4-way valve
Malfunction of capillary
Flow volume of valve is insufficient
Malfunction of horizontal louver Horizontal louver cant swing
Malfunction of the IDU fan motor The IDU fan motor cant operate
Malfunction of the ODU fan motor The ODU fan motor cant operate
Malfunction of compressor 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
Adjust the installation position, and install the rainproof and sunproof for outdoor unit
Find out the leakage causes and deal with it.
Add refrigerant.
Blow cold wind during heating
Discharged air temperature during cooling is higher than normal discharged wind temperature;
Discharged air temperature during heating is
Replace the 4-way valve
Replace the capillary 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 specification
Open the valve completely
Compressor cant operate
Refer to point 3 of maintenance method for details
Refer to troubleshooting for H6 for maintenance method in details
Refer to point 4 of maintenance method for details
Refer to point 5 of maintenance method for details
3. Horizontal Louver Cant Swing
Possible Causes
Wrong wire connection, or poor connection
Stepping motor is damaged
Main board is damaged
Discriminating Method (Air conditioner Status)
Check the wiring status according to circuit diagram
Troubleshooting
Connect wires according to wiring diagram to make sure all wiring terminals are connected firmly
Stepping motor cant operate
Others are all normal, while horizontal louver cant
Repair or replace stepping motor operate
Replace the main board with the same model
42
Installation and Maintenance
Service Manual
4. ODU Fan Motor Cant Operate
Power voltage is a little low or high
Possible causes
Wrong wire connection, or poor connection
Capacity of the ODU fan motor is damaged
Motor of outdoor unit is damaged
Discriminating method (air conditioner status)
Check the wiring status according to circuit diagram
Troubleshooting
Connect wires according to wiring diagram to make sure all wiring terminals are connected firmly
Measure the capacity of fan capacitor with an universal meter and find that the capacity is out of
Replace the capacity of fan 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
Suggest to equip with voltage regulator
When unit is on, cooling/heating performance is bad and ODU compressor generates a lot of noise and heat.
Change compressor oil and refrigerant. If no better, replace the compressor with a new one
5. Compressor Cant Operate
Possible causes
Wrong wire connection, or poor connection
Discriminating method (air conditioner status)
Check the wiring status according to circuit diagram
Troubleshooting
Connect wires according to wiring diagram to make sure all wiring terminals are connected firmly
Measure the capacity of fan capacitor with an universal meter and find that the capacity is out of
Replace the compressor capacitor
Capacity of compressor is damaged
Power voltage is a little low or high 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
Suggest to equip with voltage regulator
Coil of compressor is burnt out
Use universal meter to measure the resistance between compressor terminals and its 0
Cylinder of compressor is blocked Compressor cant operate
Repair or replace compressor
Repair or replace compressor
6. Air Conditioner is Leaking
Possible causes
Drain pipe is blocked
Drain pipe is broken
Wrapping is not tight
Discriminating method (air conditioner status)
Water leaking from indoor unit
Water leaking from drain pipe
Water leaking from the pipe connection place of indoor unit
Troubleshooting
Eliminate the foreign objects inside the drain pipe
Replace drain pipe
Wrap it again and bundle it tightly
7. Abnormal Sound and Vibration
Possible causes
When turn on or turn off the unit, the panel and other parts will expand and theres abnormal sound
When turn on or turn off the unit, theres abnormal sound due to flow of refrigerant inside air together inside the outdoor unit
Short circuit inside the magnetic coil
Discriminating method (air conditioner status)
Theres the sound of "PAPA"
Water-running sound can be heard conditioner
Foreign objects inside the indoor unit or therere parts touching together inside the indoor unit
Theres abnormal sound fro indoor unit
Foreign objects inside the outdoor unit or therere parts touching Theres abnormal sound fro outdoor unit
During heating, the way valve has abnormal electromagnetic sound
Abnormal shake of compressor Outdoor unit gives out abnormal sound
Abnormal sound inside the compressor
Abnormal sound inside the compressor
Troubleshooting
Normal phenomenon. Abnormal sound will disappear after a few minutes.
Normal phenomenon. Abnormal sound will disappear after a few minutes.
Remove foreign objects. Adjust all parts position of indoor unit, tighten screws and stick damping plaster between connected parts
Remove foreign objects. Adjust all parts position of outdoor unit, tighten screws and stick damping plaster between connected parts
Replace magnetic coil
Adjust the support foot mat of compressor, tighten the bolts
If add too much refrigerant during maintenance, please reduce refrigerant properly. Replace compressor for other circumstances.
Installation and Maintenance
43
44
5
6
7
8
12. Exploded View and Parts List
4
3
DUCT09HP230V1BD DUCT12HP230V1BD
2
1
9
10
11
12
13
14
15
16
17
The component picture is only for reference; please refer to the actual product.
Service Manual
28
27
26
29
24
23
22
21
20
19
18
Installation and Maintenance
Service Manual
NO.
Description
21
22
23
18
19
20
24
25
13
14
15
16
17
26
27
28
29
10
11
12
7
8
9
1
2
3
4
5
6
Product Code
Wired controlller
Drain Hose Sub-Assy
Temperature Sensor
Temperature Sensor
Right Side Plate Assy
Hook
Centrifugal Fan Assy
Propeller Housing(Upper)
Air IN Frame Assy
Centrifugal Fan
Supporter(Fan motor)
DC Motor
Propeller Housing(Lower)
Filter Sub-Assy
Foam Sub-assy
Cover Of Air-In
Bottom Cover Plate
Left Side Plate Assy
Terminal Board
Main Board
Electric Box Sub-Assy
Choke Plug of Drain Pipe
Seal plate Assy
Water Pump
Water Level Switch
Evaporator Assy
Air Outlet Frame Assy
Top Cover Board Assy
Jump
Above data is subject to change without notice.
DUCT09HP230V1BD
CF022N1420
30564103
05232050
390000592
390000454
01315200148
02112466
000052060068
26905200078
017026000004
10455200003
0180520027201
1570520000502
26905200079
111001000055
12505200038
01265200182
01265200181
01315200147
420001000002
300002000879
0139410055601
76815214
01495200079
43138000058
45020216
011001060108
01374100070
01264100081
4202021901
Part Code
DUCT12HP230V1BD
CF022N1400
30564103
05232050
390000592
390000454
01315200148
02112466
000052060068
26905200078
017026000004
10455200003
0180520027201
1570520000502
26905200079
111001000055
12505200038
01265200182
01265200181
01315200147
420001000002
300002000879
0139410055601
76815214
01495200079
43138000058
45020216
011001060099
01374100070
01264100081
4202021902
Qty
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
4
Installation and Maintenance
45
DUCT18HP230V1BD GFH(21)DB-D3DNA1A/I DUCT24HP230V1BD
28 27 26 25 24 23 22 21 20
19
18
29
Service Manual
46
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
The component picture is only for reference; please refer to the actual product.
16 17
Installation and Maintenance
Service Manual
NO.
21
22
23
24
17
18
19
20
25
26
27
28
29
13
14
15
16
9
10
11
12
7
8
5
6
3
4
1
2
Description
Product code
Air in Frame Assy
Filter Sub-Assy
Propeller Housing(Upper)
Centrifugal Fan
Brushless DC Motor
Propeller Housing(Upper)
Blower Mounting Plate Sub-Assy
Cover Of Air-In
Hook
Bottom Cover Plate
Seal plate Assy
Water Level Switch
PUMP
Left Side Plate Assy
Electric Box Sub-Assy
Terminal Board
Main Board
Air Outlet Frame Assy
Evaporator Assy
Sealing Cap(Pressure Warning)
Choke Plug of Drain Pipe
Foam Sub-assy
Top Cover Board Assy
Temperature Sensor
Temperature Sensor
Wired controlller
Corrugated Pipe
Drain Hose Sub-Assy
Jump
Above data is subject to change without notice.
DUCT18HP230V1BD
CF022N1390
017026000002
111001000045
26905200078
10455200003
15705200016
26905200078
01325200079
01265200132
02112466
01265200131
01495200079
45020216
43138000058
01315200147
0139410055601
420001000002
300002000879
01375200026
011001060109
2611219201
76815214
12505200025
01265200130
390000454
390000592
30564103
05015408
05232050
4202021903
Part Code
GFH(21)DB-D3DNA1A/I DUCT24HP230V1BD
CF022N1410
017026000002
111001000045
26905200078
10455200003
15705200016
26905200078
01325200079
01265200132
02112466
01265200131
01495200079
45020216
43138000058
01315200147
0139410055601
420001000002
300002000879
01375200026
011001060109
2611219201
76815214
12505200025
01265200130
390000454
390000592
30564103
05015408
05232050
4202021904
CF022N1430
017026000002
111001000045
26905200078
10455200003
15705200016
26905200078
01325200079
01265200132
02112466
01265200131
01495200079
45020216
43138000058
01315200147
0139410055601
420001000002
300002000879
01375200026
011001060109
2611219201
76815214
12505200025
01265200130
390000454
390000454
30564103
05015408
05232050
4202021905
Qty
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
3
1
1
1
1
1
1
Installation and Maintenance
47
Service Manual
11. Removal Procedure
09/12/18/21/24K
Motor and fan
Precondition: The power supply has been disconnected.
Step Diagram
1.Remove the line connecting to the motor.
2. Disassemble the seal plate and cover plate.
Operation Procedure
●Use a screwdriver to unscrew the electric box cover.
●Remove from the master board the line connecting to the motor and remove the tie.
●Use a screwdriver to unscrew the seal plate and cover plate and then remove them.
3.Remove the grille
●Use a screwdriver to unscrew the cover plate component.
4. Remove the centrifugal fan.
48
5. Remove the motor.
6. Install a new motor.
●Use a screwdriver to unscrew the front volute casing and then remove the volute casing.
Remove the motor from the support and remove the centrifugal fan from the motor axle. Then, remove the motor.
●For motors that are accompanied with supports, the supports need removing as well.
●Assemble units based on the reverse order of this procedure and power on the units for test.
Installation and Maintenance
GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
Add: West Jinji Rd, Qianshan, Zhuhai,Guangdong, China, 519070
Tel: (+86-756) 8522218
Fax: (+86-756) 8669426
E-mail: [email protected] www.gree.com
HONG KONG GREE ELECTRIC APPLIANCES SALES LIMITED
Add: Unit 2612,26/F.,Miramar Tower 132 Nathan Road,TST,Kowloon,HK
Tel: (852) 31658898 Fax: (852) 31651029
For product improvement, specifications and appearance in this manual are subject to change without prior notice.
JF00303635
Cat No: GREE_DUCT_B_SERVICE_010119
GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI
Add: West Jinji Rd, Qianshan, Zhuhai,Guangdong, China, 519070
Tel: (+86-756) 8522218
Fax: (+86-756) 8669426
U.S. E-mail: [email protected]
U.S. Product Information: www.greecomfort.com
HONG KONG GREE ELECTRIC APPLIANCES SALES LIMITED
Add: Unit 2612,26/F.,Miramar Tower 132 Nathan Road,TST,Kowloon,HK
Tel: (852) 31658898 Fax: (852) 31651029
For product improvement, specifications and appearance in this manual are subject to change without prior notice.

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