GREE ELECTRIC FGR20Pd/DNa-X(I) User manual

Owner's Manual
Original Instructions
Commercial Air Conditioners
The Ducted Split Type Air-Conditioning Units(Inverter Series)
Models:
FGR20Pd/DNa-X
FGR25Pd/DNa-X
FGR30Pd/DNa-X
FGR40Pd/D(2)Na-X
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.

To Users
Thank you for selecting Gree’s product. Please read this instruction manual carefully before
installing and using the product, so as to master and correctly use the product. In order to guide
you to correctly install and use our product and achieve expected operating effect, we hereby
instruct as below:
(1) This appliance is not intended for use by persons (including children) with reduced
physical, sensory or mental capabilities, or lack of experience and knowledge, unless
they have been given supervision or instruction concerning use of the appliance by a
person responsibility for their safety. Children should be supervised to ensure that they
do not play with the appliance.
(2) In order to ensure reliability of product, the product may consume some power under
stand-by status for maintaining normal communication of system and preheating
refrigerant and lubricant. If the product is not to be used for long, cut off the power supply;
please energize and preheat the unit in advance before reusing it.
(3) Please properly select the model according to actual using environment, otherwise it may
impact the using convenience.
(4) This product has gone through strict inspection and operational test before leaving the
factory. In order to avoid damage due to improper disassembly and inspection, which
may impact the normal operation of unit, please do not disassemble the unit by yourself.
You can contact with the special maintenance center of our company if necessary.
(5) For personal injury or property loss and damage caused by improper operation such as
improper installation and debugging, unnecessary maintenance, violation of related
national laws and rules and industrial standard, and violation of this instruction manual,
etc., we will bear no liability.
(6) When the product is faulted and cannot be operated, please contact with our
maintenance center as soon as possible by providing the following information.
1) Contents of nameplate of product (model, cooling/heating capacity, product No.,
ex-factory date).
2) Malfunction status (specify the situations before and after the error occurs).
(7) All the illustrations and information in the instruction manual are only for reference. In
order to make the product better, we will continuously conduct improvement and
innovation. We have the right to make necessary revision to the product from time to time
due to the reason of sales or production, and reserve the right to revise the contents
without further notice.
(8) The final right to interpret for this instruction manual belongs to Gree Electric Appliances
Inc. of Zhuhai.
(9) In relation to harmonics need distribution network operator to connect such equipment
locally to the public low-voltage systems.
(10) This appliance can be used by children aged from 8 years and above and persons with
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.

reduced physical, sensory or mental capabilities or lack of experience and knowledge if
they have been given supervision or instruction concerning use of the appliance in a safe
way and understand the hazards involved. Children shall not play with the appliance.
Cleaning and user maintenance shall not be made by children without supervision.
(11) If the supply cord is damaged, it must be replaced by the manufacturer, its service agent
or similarly qualified persons in order to avoid a hazard.
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.

CONTENTS
1 Safety precautions ............................................................................................................... 1
1.1 Safety Notices (Please be sure to abide ).............................................................................. 1
1.2 Power supply demand............................................................................................................... 1
2 Installation of Indoor Unit .................................................................................................... 2
2.1 Selection proper installation location....................................................................................... 2
2.2 Outline Dimension and Installation Spots............................................................................... 2
2.3 Drainage Pipe Installation and Drainage System Testing.................................................... 4
2.4 Installation of Air Duct................................................................................................................ 6
2.5 Installation of Wired Controller................................................................................................. 7
2.6 Wiring Work................................................................................................................................. 7
3 Installation of Outdoor Unit ................................................................................................. 9
3.1 Dimension of Outdoor Unit and Mounting Hole..................................................................... 9
3.2 Installation space requirement ............................................................................................... 10
3.3 Refrigerant pipe connection.................................................................................................... 10
3.4 Vacuum Pumping, Refrigerant Adding.................................................................................. 10
3.5 Electric Wiring........................................................................................................................... 12
4 Check Items after Installation and Test Operation ........................................................ 15
4.1 Check Items after Installation ................................................................................................. 15
4.2 Test operation and debugging................................................................................................ 15
5 Common Malfunctions and Troubleshooting ................................................................. 17
6 Error Indication ................................................................................................................... 19
7 Maintenance and Care ...................................................................................................... 21
7.1 Outdoor Heat Exchanger ........................................................................................................ 21
7.2 Drain Pipe.................................................................................................................................. 21
7.3 Notice before Seasonal Use................................................................................................... 21
7.4 Maintenance after Seasonal Use........................................................................................... 22
7.5 Parts Replacement................................................................................................................... 22
8 After-sales Service ............................................................................................................. 22
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.

The Ducted Split Type Air-Conditioning Units(Inverter Series) Installation and Operation Manual
1
1 Safety precautions
1.1 Safety Notices (Please be sure to abide )
Warning: If not abide strictly, it may cause severe damage to the unit or the people.
Note: If not abide strictly, it may cause slight or medium damage to the unit or the
people.
This sign indicates that the operation must be prohibited. Improper operation may
cause severe damage or death to people.
This sign indicates that the items must be observed. Improper operation may cause
damage to people or property.
This marking indicates that this product should not be disposed with other household
wastes throughout the EU.To prevent possible harm to the environment or human health
from uncontrolled waste disposal,recycle it responsibly to promote the sustainable reuse of
material resources.To return your used device,please use the return and collection
systems or contact the retailer where the product was purchased.They can take this
product for environmental safe recycling.
WARNING!
This product can’t be installed at corrosive , inflammable or explosive environment or the
place with special requirements, such as kitchen or washing room. Otherwise, it will affect
the normal operation or shorten the service life of the unit, or even cause fire hazard or
serious injury. As for above special places, please adopt special air conditioner with
anti-corrosive or anti-explosion function .
1.2 Power supply demand
(1) Provided sufficient capacity of power supply and the cross area of electrical wires.
(2) Confirm the reliable earth connection, and the earth wire should be connected to special
device of the building. Never connect the earth wire to the gas pipe, water pipe, the earth
wires of telephone and lighting rod.
(3) Make sure that the wiring is done by the qualified technicians according to the relevant
regulations.
(4) In fixed circuit, there must be electricity leakage protection switch of enough power
capacity and air switch with enough space.
(5) An all-pole disconnection device which has at least 3mm separation distance in all pole
and a residual current device(RCD)with the rating of above 10mA shall be incorporated in
the fixed wiring according to the national rule
(6) The appliance shall be installed in accordance with national wiring regulations
(7) The temperature of refrigerant circuit will be high, please keep the interconnection cable
away from the copper tube.
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.

The Ducted Split Type Air-Conditioning Units(Inverter Series) Installation and Operation Manual
2
2 Installation of Indoor Unit
2.1 Selection proper installation location
(1) Avoid the direct sunshine.
(2) Make sure the suspension bracket is strong enough to withstand the unit’s weight.
(3) Select a place for easily connection of the drain hose.
(4) The inlet and outlet ports should not be obstructed so that the indoor air circulates well.
(5) Make sure the convenient connect of the connection pipes.
(6) Selection a location that is far away from the combustible or explosive material and gas.
(7) Selection a location that is far away from the cankerous material, fog, dusk or moist.
2.2 Outline Dimension and Installation Spots
Equip with an 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.
(1) Below are the outline dimension applicable to indoor units
b.40kW
Fig. 1
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.

The Ducted Split Type Air-Conditioning Units(Inverter Series) Installation and Operation Manual
3
Below are dimensions of A, B, C, etc. for different models:
Unit: mm
Model
a
b
c
d
e
f
FGR20Pd/DNa-X(I)
1334
632
990
1150
192
363
FGR25Pd/DNa-X(I)
1541
705
980
1350
270
420
FGR30Pd/DNa-X(I)
1541
705
980
1350
270
420
FGR40Pd/D(2)Na-X(I)
1730
760
1054
1450
360
560
(2) 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 2; 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 3.
Fig 2 Fig 3
2) Insert the M10 expansion bolt into the hole and then knock the nail into the bolt, as
shown in Fig 4.
NOTES
The length of bolt depends on the installation height of the unit, bolts are field supplied.
Fig 4
(3) 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.
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.

The Ducted Split Type Air-Conditioning Units(Inverter Series) Installation and Operation Manual
4
(4) The usage of paper pattern
Refer to paper pattern of installation for ceiling opening dimension. The center of ceiling
opening is indicated on the paper pattern. Fix the paper pattern to the unit with 4 screws and fix the
corners of the waterspout at the drainage pipe by screws.
(5) Adjust the unit to the right position.
(6) Check the level of the unit
The indoor unit is equipped with build-in water pump and float switch, verify the levelness of 4
directions by level gauge or vinyl tube (filled with water) respectively.
Fig.5
(7) Remove the washer locating plate and then tighten the nut on it.
(8) Remove the paper pattern.
Fig.6
2.3 Drainage Pipe Installation and Drainage System Testing
2.3.1 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. Improper installation may lead to water leakage and damp the furniture and other
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.

The Ducted Split Type Air-Conditioning Units(Inverter Series) Installation and Operation Manual
5
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 (4 in.) lower than the drainage port of each unit. In this case, thicker pipes
should be applied.
Fig.7
2.3.2 Drainage pipe installation
For easy drainage of the condensation water, the drainage pipe should be installed with a
downward gradient. To avoid the condensation, the connection pipe joint should be insulated with
thermal insulation material. A water seal should be employed as shown in Fig.8 and the height of
the water seal could be determined by the pressure of the drain hose.
Drain hose is in negative pressure state: A = B≥P/10+20 (mm).
Drain hose is in positive pressure state: A≥30mm，B≥P/10+20 (mm).
Note: P is the absolute pressure of the drain hose position, Pa.
Fig.8
2.3.3 Test of Drainage System
(1) Inject approximately 1L purified water to drain pan from air vent, ensure that not to splash
the water over the electrical components (e.g. water pump. etc.).
(2) During the test, please carefully check the drainage joint, make sure no any leakage
occur.
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.

The Ducted Split Type Air-Conditioning Units(Inverter Series) Installation and Operation Manual
6
(3) It is strongly recommend to do the drain test before ceiling decoration.
Fig.9
2.4 Installation of Air Duct
NOTES
① There should be insulating layer on air-out duct, air-return duct and fresh air duct to avoid
heat loss and moisture. Adhere a nail on the air duct and then add thermal sponge with a
layer of tin. Fasten it with a nail cover and then seal the junction with tin tapes. You can
also use other materials that have good insulation quality.
② Each air-out duct and air-return duct should be fixed on a pre-made board with iron frame.
The junction of air duct should be well-sealed in order to prevent air leakage.
③ The design and construction of air duct should comply with national requirements.
④ The edge of air-return duct is suggested to be more than 150mm(5-7/8 in.) away from the
wall. Add a filter to the air-return opening.
⑤ Please consider noise-damping and vibration damping for the design and construction of
air duct. Besides, noise source must be away from people. For instance, do not have the
air-return opening installed on top of the user (Offices, rest area, etc.).
2.4.1 Installation of Air-out Duct
(1) Installation of the Rectangular Duct
Fig.10
No.
Name
No.
Name
1
Hanger Rod
5
Static Pressure Box
2
Return Air Duct
6
Main Supply Air Duct
3
Canvas Duct
7
Supply Air Outlet
4
Return Air Inlet
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.

The Ducted Split Type Air-Conditioning Units(Inverter Series) Installation and Operation Manual
7
2.4.2 Shape and Size of Air Outlet and Air-return Opening
Fig.11 Air Outlet
Fig.12 Air-return Opening
Unit: mm
Model
Size of Air Outlet
Size of Air –return Opening
A
B
C
D
FGR20Pd/DNa-X(I)
192
990
1150
363
FGR25Pd/DNa-X(I)
270
980
1350
420
FGR30Pd/DNa-X(I)
270
980
1350
420
FGR40Pd/D(2)Na-X(I)
360
1160
1450
560
2.5 Installation of Wired Controller
Please refer to User Manual of Wired Controller for the installation details.
NOTICE! When installation is finished, the unit must be tested and debugged before
operation. Please refer to Instruction Manual of ODU for auto addressing and debugging details.
2.6 Wiring Work
WARNING
Before obtaining access to terminals, all supply circuits must be disconnected.
(1) Units must be earthed securely, or it may cause electric shock.
(2) Please carefully read the wiring diagram before carry out the wiring work, incorrect wiring
could cause malfunction or even damage the unit.
(3) The unit should be powered by independent circuit and specific socket.
(4) The wiring should be in accordance with related regulations in order to ensure the units
reliable running.
(5) Install circuit breaker for branch circuit according to related regulations and electrical
standards.
(6) Keep cable away from refrigerant pipings, compressor and fan motor.
(7) The communication wires should be separated from power cord and connection wire
between indoor unit
(8) Adjust the static pressure via wired controller according to site circumstance.
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.

The Ducted Split Type Air-Conditioning Units(Inverter Series) Installation and Operation Manual
8
2.6.1 Connection of Wire and Patch Board Terminal
(1) The connection of wire (as shown in fig.13)
1) Strip about 25mm (1 in.) insulation of the wire end by stripping and cutting tool.
2) Remove the wiring screws on the terminal board.
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.14)
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.
Fig.13 Fig.14
2.6.2 Connect Communication Wire of Wired Controller
(1) Open electric box cover of indoor unit.
(2) Let the communication wire go through the rubber ring.
(3) Connect the communication wire to terminal H1 and H2 of indoor 4-bit wiring board.
(4) Fix the communication wire with wire clip on the electric box.
(5) Wiring instructions of remote receiving light board and wired controller:
Fig.15
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.

The Ducted Split Type Air-Conditioning Units(Inverter Series) Installation and Operation Manual
9
2.6.3 Illuminate for Connection of Wired Controller and Indoor Units Network
(1) Communication wire of indoor unit and outdoor unit (or indoor unit) is connected to D1,
D2.
(2) Wired controller is connected to H1, H2.
(3) One indoor unit can connect two wired controllers that must be set as master one and
slave one.
3 Installation of Outdoor Unit
NOTES
Graphics here are only for reference. Please refer to actual products. Unspecified
dimensions are all in mm.
3.1 Dimension of Outdoor Unit and Mounting Hole
Unit Outline and Installation Dimension（mm）
Fig.16
Unit: mm
Model
A
B
C
D
E
FGR20Pd/DNa-X(O)
940
320
1430
632
350
FGR25Pd/DNa-X(O)
940
460
1615
610
486
FGR30Pd/DNa-X(O)
940
460
1615
610
486
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.

The Ducted Split Type Air-Conditioning Units(Inverter Series) Installation and Operation Manual
10
3.2 Installation space requirement
If all sides of the ODU (including the top) are surrounded by walls, process according to the
following requirements for installation space:
3.3 Refrigerant pipe connection
Note: Do not loosen the cap of the pipes when connecting the pipes between the indoor unit
and the outdoor unit. Connecting the pipes as soon as possible after loosening the cap of the
pipes to avoid the entering of water and dusk. A metal pipe should be utilized if a pipe should be
installed through a wall.
The connection of the pipes should confirm to the following principles:
Make sure to lessen the length of connecting pipe, the height difference between the indoor
and outdoor unit, and the number of bends, and enlarge the diameter of bends.
The permitted maximum value of each case:
Height difference between the indoor and outdoor unit
＜30M
Number of bends
＜12
Length of connecting pipes
＜50M
The pipe meld type could be employed for the connection of the pipes between the indoor
and outdoor units.
The pipe joint should be tightly connected when a pipe joint is employed between two pipes.
It is better to use only one connecting pipe if the distance is not far.
The pipes should not be shriveled when the pipes are connecting. The bend diameter
should be longer than 200 millimeter. The connecting pipes should not be extended or curved
frequently and the curving process should not be larger than 3 times in the same bending
position.
3.4 Vacuum Pumping, Refrigerant Adding
3.4.1 Vacuum Pumping
(1) Outdoor unit has been charged with refrigerant before delivery. Field-installed connection
pipe needs to be charged with additional refrigerant.
(2) Confirm whether outdoor liquid and gas valves are closed.
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.

The Ducted Split Type Air-Conditioning Units(Inverter Series) Installation and Operation Manual
11
(3) Use vacuum pump to withdraw the air inside indoor unit and connection pipe from the
outdoor valve, as shown below.
Fig.17
3.4.2 Refrigerant Adding
(1) Refrigerant quantity of outdoor unit before delivery:
Model
FGR20Pd/DNa-X(O)
FGR25Pd/DNa-X(O)
FGR30Pd/DNa-X(O)
Refrigerant Qty (kg)
6.4
8.0
9.5
NOTES!
① The refrigerant amount charged before delivery doesn’t include the amount that needs to
be added to indoor units and the connection pipeline.
② Length of connection pipe is decided on site. Therefore the amount of additional
refrigerant shall be decided on site according to the dimension and length of
field-installed liquid pipe.
③ Record the amount of additional refrigerant for convenience of after-sales service.
(2) Calculation of the amount of additional refrigerant
Calculation method of the quantity of additional refrigerant (based on liquid pipe)
Quantity of additional refrigerant = ∑length of liquid pipe X quantity of additional refrigerant
per meter.
Quantity of additional refrigerant per meter for liquid pipe（kg/m）
Φ22.2
Φ19.05
Φ15.9
Φ12.7
Φ9.52
Φ6.35
0.35
0.25
0.17
0.11
0.054
0.022
First confirm that there is no leakage from the system. When compressor is not working,
charge additional R410a with specific amount to the unit through the filling opening of the liquid
pipe valve of the outdoor unit. If required amount cannot be quickly filled due to pressure increase
of the pipe, then set the unit in cooling startup and fill refrigerant from the low pressure check valve
of the outdoor unit.
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.

The Ducted Split Type Air-Conditioning Units(Inverter Series) Installation and Operation Manual
12
3.5 Electric Wiring
3.5.1 Notices for Wiring
(1) Install units according to national wiring codes.
(2) Use air conditioner specialized power supply and make sure that it is consistent with
system’s rated voltage.
(3) Do not pull the power cord with force.
(4) All electrical installation must be performed by qualified technicians in accordance with
local laws, regulations and this user manual.
(5) Caliber of the power cord must be large enough. A damaged power cord or connection
wire must be replaced by specialized electrical cords.
(6) If the supply cord is damaged, it must be replaced by the manufacturer or its service
agent or a similarly qualified person in order to avoid a hazard.
(7) A circuit breaker having a contact separation of at least 3mm in all poles should be fixed
in fixed wiring.
Connect the unit to specialized grounding device and make sure it is securely grounded. It’s a
must to install air switch and current circuit breaker that can cut off the power of the entire system.
The circuit breaker should include magnetic trip function and thermal trip function so that system
can be protected from short circuit and overload.
Grounding Requirements:
(1) Air conditioner belongs to class I electrical appliance, so it must be securely grounded.
(2) The yellow-green wire inside the unit is a ground wire. Do not cut it off or secure it with
tapping screws, otherwise it will lead to electric shock.
(3) Power supply must include secure grounding terminal. Do not connect the ground wire to
the following:
① Water pipe； ② Gas pipe； ③ Drain pipe； ④ Other places that are deemed as not
secure by professional technicians.
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.

The Ducted Split Type Air-Conditioning Units(Inverter Series) Installation and Operation Manual
13
3.5.2 Wiring Diagram
1) Connection of power cord and communication wire
Separate power supply for IDU and ODU
D1
D2
G1
G2
L1 L2 L3 NPE
D1
D2
H1
H2
L N PE
Wired
Controller
Power Earthing
Wire
Power
Indoor
Outdoor
FGR20Pd/DNa-X、FGR25Pd/DNa-X、FGR30Pd/DNa-X
D1
D2
G1
G2
L1 L2 L3 NPE
D1
D2
G1
G2
L1 L2 L3 NPE
D1
D2
H1
H2
PE
Wired
Controller
Power Earthing
Wire
Indoor
Outdoor 1
Outdoor 2
Power Earthing
Wire
L1 L2 L3 N
Power
FGR40Pd/D(2)Na-X
Fig.22 Connection of power cord and communication wire for IDU and ODU
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.

The Ducted Split Type Air-Conditioning Units(Inverter Series) Installation and Operation Manual
14
2) Selection of circuit breaker and power cord
Model
Power supply
Circuit
breaker
capacity
（A）
（mm2）Number of
ground wire * Min
sectional area (mm2)
（mm2）Number of
power cord * Min
sectional area (mm2)
FGR20Pd/DNa-X(O)
380-415V 3N~ 50/60HZ
20
1*2.5
4*2.5
FGR20Pd/DNa-X(I)
220V~50HZ
10
1*1.5
2*1.5
FGR25Pd/DNa-X(O)
380-415V 3N~ 50/60HZ
25
1*2.5
4*2.5
FGR25Pd/DNa-X(I)
220V~50HZ
10
1*1.5
2*1.5
FGR30Pd/DNa-X(O)
380-415V 3N~ 50/60HZ
32
1*4.0
4*4.0
FGR30Pd/DNa-X(I)
220V~50HZ
10
1*1.5
2*1.5
FGR40Pd/D(2)Na-X(I)
380-415V 3N~ 50/60HZ
10
1*1.5
4*1.5
NOTES
① Selection of circuit breaker and power cord in the above table is based upon unit’s
maximum power (maximum current).
② Specification of power cord is based on the working condition where ambient
temperature is 40℃ and multi-core copper cable (working temperature is 90℃, e.g.
power cable with YJV cross-linked copper, insulated PE and PVC sheath) is lying on the
surface of slot. If working condition changes, please adjust the specification according to
national standard.
③ Specification of circuit breaker is based on the working condition where ambient
temperature of circuit breaker is 40℃. If working condition changes, please adjust the
specification according to national standard.
④ The communication wire between the indoor unit and the outdoor unit should wind with a
magnetic ring (packed in the packing accessories). The communication wire should wind
the magnetic ring for 4 circles, and the use the tieline to fix the magnetic ring at the meta
sheet.
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.

The Ducted Split Type Air-Conditioning Units(Inverter Series) Installation and Operation Manual
15
4 Check Items after Installation and Test Operation
4.1 Check Items after Installation
Check items
Possible conditions due to improper
installation
Check
Each part of the unit is installed securely?
Unit may drop, shake or emit noise.
Gas leakage test is taken or not?
Insufficient cooling (heating) capacity
Unit gets proper thermal insulation or not?
There may be condensation and dripping.
Drainage is smooth or not?
There may be condensation and dripping.
Is the voltage in accordance with the rated voltage
specified on the nameplate?
Unit may have malfunction or
components may get damaged.
is the electric wiring and pipe connection installed
correctly?
Unit may have malfunction or
components may get damaged.
Unit is securely grounded or not?
Electrical leakage
Power cord meets the required specification?
Unit may have malfunction or
components may get damaged.
Is the air inlet/outlet blocked?
Insufficient cooling (heating) capacity
Length of refrigerant pipe and the charging
amount of refrigerant are recorded or not?
The refrigerant charging amount is not
accurate.
Binding pieces on compressor feet are removed
or not?
Compressor may get damaged.
4.2 Test operation and debugging
Notice:
① After finishing the first installation or replacing the main board of outdoor unit, it is
necessary to perform test operation and debugging. Otherwise, unit won’t be able to
work.
② Test operation and debugging must be performed by professional technicians or under
the guidance of professional technicians.
4.2.1 Prepare the test operation and debugging
(1) Do not connect power until all installation work is finished.
(2) All control circuits and wires are correctly and securely connected.
(3) Check whether the fixing loops for compressor foots are removed.
(4) All small pieces, especially metal chips, thread ends and forceps holder, must be removed
from the unit.
(5) Check whether unit’s appearance and pipeline system has been damaged during
transportation.
(6) Calculate the quantity of refrigerant that needs to be added according to the pipe length.
Pre-charge the refrigerant. In case that the required charging quantity is not reached
while refrigerant can’t be added, record the quantity of refrigerant that still needs to add
and complement the quantity during test operation. For details of adding refrigerant
during test operation, see below.
(7) After refrigerant is added, make sure valves of outdoor unit are completely open.
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.

The Ducted Split Type Air-Conditioning Units(Inverter Series) Installation and Operation Manual
16
(8) For the convenience of troubleshooting during debugging, unit shall be connected to a PC
with applicable debugging software. Make sure unit’s real-time data can be checked
through this computer. The installation and connection of debugging software can be
found in the Service Manual.
(9) Before test operation, make sure unit is power on and compressor has been preheated for
more than 8 hours. Touch the unit to check whether it’s normally preheated. If yes, start
test operation. Otherwise, compressor might be damaged.
(10) If the LED digital tube on main board displays _ _ _ _, then input the startup password.
For operation details, please see the instructions for the function of startup password.
4.2.2 Test Operation and Debugging
Description of test operation procedures and main board display of ODU
Description of each stage of debugging progress
——
Debugging Code
Instruction for Code and Operating Method
Progress
LED
Display Code
Display
Code
01_ Set master
unit
01/CC
Display
repeatedly
There is no master unit in the system. The system cannot
continue to conduct debugging, and all the buttons are
invalid that must be reset by cutting the power.
01/CF
Display
repeatedly
There are two or more master units in the system. The
system cannot continue to conduct debugging, and all the
buttons are invalid that must be reset by cutting the power.
01/OF
Display
repeatedly
There is only one master unit in the system. The unit will
automatically enter into the next step after display for once.
02_ Allocate
addresses
02
Flicker
The system is allocating addresses. It will display asbelow
after 10 seconds:
02/L7
Display
repeatedly
There is no master unit. The display will last for 1 minute,
within this 1 minute, the master IDU can be set by
debugging software. If the master IDU has not been set
within this 1 minute, the system will automatically set the
IDU with the minimum IP address as the master IDU.
02/OC
Display
repeatedly
The system has finished allocating the addresses, there is
master IDU.It will automatically enter into the next step’s
operation after displaying for once.
03_ Confirm the
quantity of ODU
03/QTY of
module
Display
repeatedly
Confirmation of quantity of modules in the system. If the
actual quantity of ODU is inconformity with the displayed
quantity, please check the dial code and wire connection
and then conduct debugging for confirmation.
03/OC
Display
repeatedly
If the actual quantity of ODU is in conformity with the
displayed quantity, press SW3 button to confirm. After
confirmation, all the module nixie tubes will repeatedly
display ―03‖ and ―0C‖, after displaying for once, the system
will automatically enter into the next operation.
04_ Confirm the
quantity of IDU
04/Cb
Display
repeatedly
It is not allowed to connect more than one indoor unit in the
system. Please check and debug again to confirm.
04/oC
Display
repeatedly
The quantity of IDU in the system has been confirmed.It will
enter into the next step.
05_ Detect
ODU’s internal
communication
05/C2
Display
repeatedly
Communication between master control and driving of ODU.
Please check if the communication wire between mainboard
and driving board of ODU is correctly connected, if it is,
enter into the next step. If the ODU should be powered off
for the debugging, after re-energizing the unit, please
conduct debugging from the above 01 step.
05/oC
Display
repeatedly
The communication between master control and driving of
ODU are normal. After displaying for once, it will
automatically enter into the next step.
Copyright 2018. This translation is property of GREE PRODUCTS SL. All rights reserved. Total or partial reproduction without its express authorization is prohibited.