Gree GMV-N56G/A3A-K User manual

Owner's Manual
Original Instructions
Commercial Air Conditioners
Multi Variable Air Conditioners
Wall Mounted Type Indoor Unit
Models:
GMV-N22~71G/A3A-K
GMV-N22~71G/A2A-K
GMV-N22~71G/A4A-K
GMV-N22~71G/A8A-K
GMV-N22~71G/C9A-K
GMV-N22~71G/E3A-K
GMV-N22~71G/A3A-D
GMV-N22~71G/A8A-D
GMV-N22~71G/E3A-D
GMV-N22~71G/B3A-D
GMV-ND22~100G/A3A-T
GMV-ND22~100G/A8A-T

To Users
Thank you for selecting Gree 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 can be used by children aged from 8 years and above and persons with
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.
(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 can’t be installed at corrosive, inflammable or explosive environment or the
place with special requirements, such as kitchen. 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.
(5) If the product needs to be installed, moved or maintained, please contact our designated
dealer or local service center for professional support. Users should not disassemble or
maintain the unit by themselves, otherwise it may cause relative damage, and our company
will bear no responsibilities.
(6) 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. If
there is adjustment in the product, please subject to actual product.

Exception Clauses
Manufacturer will bear no responsibilities when personal injury or property loss is caused by the
following reasons:
(1) Damage the product due to improper use or misuse of the product;
(2) Alter, change, maintain or use the product with other equipment without abiding by the
instruction manual of manufacturer;
(3) After verification, the defect of product is directly caused by corrosive gas;
(4) After verification, defects are due to improper operation during transportation of product;
(5) Operate, repair, maintain the unit without abiding by instruction manual or related
regulations;
(6) After verification, the problem or dispute is caused by the quality specification or
performance of parts and components that produced by other manufacturers;
(7) The damage is caused by natural calamities, bad using environment or force majeure.

Contents
1 Safety Notices (Please be sure to abide ) ........................................................ 1
2 Product Introduction ......................................................................................... 3
2.1 Outline of the Unit and Main Parts.......................................................................................... 3
2.2 Rated Operating Condition....................................................................................................... 4
3 Preparations for Installation ............................................................................. 4
3.1 Location for Installation.............................................................................................. 4
3.2 Schematic diagram of installation spaces.................................................................. 4
3.3 Requirements for Communication Line ..................................................................... 5
3.4 Wiring Requirements ................................................................................................. 6
4 Installation Instructions .................................................................................... 8
4.1 Installation of Indoor Unit........................................................................................... 8
4.2 The installation of the rear panel ............................................................................... 9
4.3 Preparation of the piping hole.................................................................................... 9
4.4 Installation of the drainage pipe................................................................................. 9
4.5 Installation the connection pipes ............................................................................. 10
5 Wiring Work...................................................................................................... 10
5.1 Connect Cables and Terminals of Wiring Board ...................................................... 10
5.2 Power Cord Connection ...........................................................................................11
5.3 Connection of Communication Line of IDU and ODU ..............................................11
5.4 Connection of Communication Line of Wired Controller.......................................... 12
5.5 Illuminate for Connection of Wired Controller and Indoor Units Network.............. 12
5.6 Installation of the indoor unit.................................................................................... 13
6 The Best Usage Method .................................................................................. 13
7 Maintenance Method ....................................................................................... 14
7.1 Cleaning panel......................................................................................................... 14
7.2 Cleaning the air filters.............................................................................................. 14
7.3 Check before the usage season.............................................................................. 15
7.4 Check after the usage season................................................................................. 15
8 Table of Error Codes for Indoor Unit.............................................................. 15
9 Malfunction Analyzing ..................................................................................... 16
9.1 Service center.......................................................................................................... 17
9.2 After-sales service ................................................................................................... 17
10 Adjusting Method Of The Air Direction ........................................................ 17
10.1 Adjusting air direction up and down....................................................................... 17
10.2 Adjusting air direction left and right........................................................................ 17

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
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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.
WARNING!
This Multi VRF System shall only be connected to an appliance suitable for the same
refrigerant.
All units in Manual Cover is a partial unit, complying with partial unit of IEC 60335-2-40:2018,
and must only be connected to other units that have been confirmed as complying to
corresponding partial unit requirements of this international standard.
The electrical interface shall comply with electrical security requirement, voltage shall be
220-240(50Hz) or 208-230(60Hz), current shall be referred to the table of “Wiring
Requirements” in Section 3.4, and safety class of construction is I.
Follow this instruction to
complete the installation
work. Please carefull read
this manual before unit
startup and service.
Installation should be
conducted by dealer or
qualified personnel. Please do
not attempt to install the unit
by yourself. Improper
handling may result in
waterleakage, electric
shock or fire disaster etc.
Before installation,please
check if the power supply
is in accordance with the
requirements specified on
the nameplate.And also
take care of the power
safety.
Make sure the unit can be
earthed properly and soundly
after plugging into the socket
so as to avoid electric shock.
Please do not connect the
ground wire to gas pipe, water
pipe, lightning rod or
telephoneline.
Be sure to use the
exclusive accessory and
part to prevent the water
leakage, electric shock
and fire accidents.
If refrigerant leakage happens
during installation, please
ventilate immediately.
Poisonous gas will emerge if
the refrigerant gas meets fire.
Wire size of power cord
should be large enough.
The damaged power cord
and connection wire
should be replaced by
exclusive cable.
After connecting the power
cord, please fix the electric
box cover properly in order to
avoid accident.

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
2
Never fail to comply with
the nitrigen charge
requirements.Charge
nitrogen when welding
pipes.
Never short-circiut or cancel
the pressure switch to prevent
unit damage.
Please firstly connect the
wired controller before
energization,otherwise
wired controller can not be
used.
Before using the unit, please
check if the piping and wiring
are correct to avoid water
leakage,refrigerant leakage,
electric shock, or fire etc.
Do not insert fingers or
objects into air outlet/inlet
grille.
Open the door and window
and keep good ventilation in
the room to avoid oxygen
deficit when the gas/oil
supplied heating equipment
is used.
Never start up or shut off
the air conditioner by
means of directly plug or
unplug the power cord.
Turn off the unit after it runs at
least five minutes; otherwise it
will influence oil return of the
compressor.
Do not allow children
operate this unit.
Do not operate this unit with
wet hands.
Turn off the unit or
cut off the power supply
before cleaning the unit,
otherwise electric shock or
injury may happen.
Never spray or flush water
towards unit, otherwise
malfunction or electric shock
may happen.
Do not expose the unit to
the moist or corrosive
circumstances.
Electrify the unit 8 hours
before operation. Please
switch on for 8 hours before
operation. Do not cut off the
power when 24 hours
short-time halting (to protect
the compressor).
Volatile liquid, such as
diluent or gas will damage
the unit appearance.Only
use soft cloth with a little
neutral detergent to clean
the outer casing of unit.
Under cooling mode, please
don't set the room
temperature too low and keep
the temperature difference
between indoor and outdoor
unit within 5.

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
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If anything abnormal
happens (such as burning
smell), lease power off the
unit and cut off the main
power supply, and then
immerdiately contact Gree
appointed service center.If
abnormality keeps going,
the unit might be damaged
and lead to electric shock
or fire.
User is not allowed to repair
the unit. Fault service may
cause electric shock or fire
accidents. Please contact
Gree appointed service center
for help.
Any personal injury or property loss caused by improper installation, improper debug,
unnecessary repair or not following the instructions of this manual should not be the responsibility of
Gree Electric Appliances, Inc. of Zhuhai.
2 Product Introduction
2.1 Outline of the Unit and Main Parts
Fig .2.1

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
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Note：
The appearances will be different by the different models of air conditioners.
No.
Part Name
No.
Part Name
①
Surface panel
④
Guide louver
②
Filter
⑤
Drain pipe
③
Wiring cover
—
—
2.2 Rated Operating Condition
Item
Indoor Condition
Outdoor Condition
DBTemperature(°C)
WBTemperature(°C)
DBTemperature(°C)
WBTemperature(°C)
Rated Cooling
27
19
35
24
Rated Heating
20
15
7
6
3 Preparations for Installation
3.1 Location for Installation_
(1) The appliance shall not be installed in the laundry.
(2) The indoor unit should be installed at 2.5m or higher above the floor.
(3) The top holder must be strong enough to support unit’s weight.
(4) Drain pipe can drain water out easily.
(5) There is no obstacle at inlet or outlet. Please ensure good air circulation.
(6) Keep the unit away from heating source, inflammable gas or smoke.
3.2 Schematic diagram of installation spaces
Unit: mm
Fig 3.2.1
Notes:
①The unit shall be installed by the professional personnel according to this installation
instruction to ensure proper use.
②Please contact the local Gree appointed service center before installation. Any
malfunctioncaused by the unit that is not installed by the Gree appointed service center

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
5
would probably not be dealt with on time because of the inconvenience of the business
contact.
③It should be guided under the professional personnel when the air conditioner unit is moved
to other place.
3.3 Requirements for Communication Line
Note:
If the unit is installed in the place with strong electromagnetic interference, shielded wire must be
applied on the communication wire between indoor unit and wired controller. Twisted pair line with
shielding function must be applied on the communication wire between indoor unit and indoor unit
(outdoor unit).
3.3.1 Select communication line for indoor unit and wired controller
Fig 3.3.1
Material type
Total length of
communication line between
indoor unit and wired
controller L (m/feet)
Wire size
(mm2/AWG)
Material
Standard Remarks
Light/Ordinary
polyvinyl
chloride
sheathed cord.
(60227 IEC 52
/60227 IEC 53)
L≤250m
(L≤820-1/5feet)
2×0.75~2×1.
25
(2×AWG18~2
×AWG16)
IEC
60227-5-20
07
1.Total length of communication line
can't exceed 250m (820-1/5feet).
2.The cord shall be Circular cord (the
cores shall be twisted together).
3.If unit is installed in places with
inte
nse magnetic field or strong
interference, it is necessary to use
shielded wire.

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
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3.3.2 Select communication line for indoor unit and indoor unit (outdoor unit)
Fig 3.3.2
Material Type
Total Length L (m/feet) of
Communication Cable
between Indoor Unit a
nd
Indoor (Outdoor) Unit
Wire size
(mm2/AWG) Material Standard Remarks
Light/Ordinar
y polyvinyl
chloride
sheathed
cord. (60227
IEC 52
/60227 IEC
53)
L≤1000m
(L≤3280-5/6feet)
≥2×0.75
(≥2×AWG18) IEC 60227-5-2007
1.If the wire diameter is
enlarged to 2×1 mm2
(2×AWG16), the total
communication line length
can reach 1500 m
(4921-1/4feet).
2.The cord shall be Circular
cord (the cores shall be
twisted together).
3.If unit is installed in places
with intense magnetic field or
strong interference, it is
necessary to use shielded
wire.
3.4 Wiring Requirements
Model Power Cord Size
Air Switch
apacity
(A)
Minimum
Sectional
Area of
Ground
Wire(mm
2
)
Minimum
Sectional Area
of Power
Cord(mm2)
GMV-N22G/A3A-K, GMV-N22G/A2A-K
GMV-N22G/A4A-K, GMV-N22G/A8A-K
GMV-N22G/C9A-K, GMV-N22G/E3A-K
220-240V ~ 50Hz 6 1 1
GMV-N28G/A3A-K, GMV-N28G/A2A-K
GMV-N28G/A4A-K, GMV-N28G/A8A-K
GMV-N28G/C9A-K, GMV-N28G/E3A-K
220-240V~ 50Hz 6 1 1
GMV-N36G/A3A-K, GMV-N36G/A2A-K
GMV-N36G/A4A-K, GMV-N36G/A8A-K
GMV-N36G/C9A-K, GMV-N36G/E3A-K
220-240V ~ 50Hz 6 1 1
GMV-N45G/A3A-K, GMV-N45G/A2A-K
GMV-N45G/A4A-K, GMV-N45G/A8A-K
GMV-N45G/C9A-K, GMV-N45G/E3A-K
220-240V ~ 50Hz 6 1 1
GMV-N50G/A3A-K, GMV-N50G/A2A-K
GMV-N50G/A4A-K, GMV-N50G/A8A-K
GMV-N50G/C9A-K, GMV-N50G/E3A-K
220-240V ~ 50Hz 6 1 1

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
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Model Power Cord Size
Air Switch
apacity
(A)
Minimum
Sectional
Area of
Ground
Wire(mm
2
)
Minimum
Sectional Area
of Power
Cord(mm2)
GMV-N56G/A3A-K, GMV-N56G/A2A-K
GMV-N56G/A4A-K, GMV-N56G/A8A-K
GMV-N56G/C9A-K, GMV-N56G/E3A-K
220-240V ~ 50Hz 6 1 1
GMV-N63G/A3A-K, GMV-N63G/A2A-K
GMV-N63G/A4A-K, GMV-N63G/A8A-K
GMV-N63G/C9A-K, GMV-N63G/E3A-K
220-240V ~ 50Hz 6 1 1
GMV-N71G/A3A-K, GMV-N71G/A2A-K
GMV-N71G/A4A-K, GMV-N71G/A8A-K
GMV-N71G/C9A-K, GMV-N71G/E3A-K
220-240V ~ 50Hz 6 1 1
GMV-N22G/A3A-D, GMV-N22G/A8A-D
GMV-N22G/E3A-D, GMV-N22G/B3A-D
208-230V ~ 60Hz 6 1 1
GMV-N28G/A3A-D, GMV-N28G/A8A-D
GMV-N28G/E3A-D, GMV-N28G/B3A-D
208-230V ~ 60Hz 6 1 1
GMV-N36G/A3A-D, GMV-N36G/A8A-D
GMV-N36G/E3A-D, GMV-N36G/B3A-D
208-230V ~ 60Hz 6 1 1
GMV-N45G/A3A-D, GMV-N45G/A8A-D
GMV-N45G/E3A-D, GMV-N45G/B3A-D
208-230V ~ 60Hz 6 1 1
GMV-N50G/A3A-D, GMV-N50G/A8A-D
GMV-N50G/E3A-D, GMV-N50G/B3A-D
208-230V ~ 60Hz 6 1 1
GMV-N56G/A3A-D, GMV-N56G/A8A-D
GMV-N56G/E3A-D, GMV-N56G/B3A-D
208-230V ~ 60Hz 6 1 1
GMV-N63G/A3A-D, GMV-N63G/A8A-D
GMV-N63G/E3A-D, GMV-N63G/B3A-D
208-230V ~ 60Hz 6 1 1
GMV-N71G/A3A-D, GMV-N71G/A8A-D
GMV-N71G/E3A-D, GMV-N71G/B3A-D
208-230V ~ 60Hz 6 1 1
GMV-ND22G/A3A-T,GMV-ND28G/A3A-T
GMV-ND36G/A3A-T,GMV-ND45G/A3A-T
GMV-ND50G/A3A-T,GMV-ND56G/A3A-T
GMV-ND63G/A3A-T,GMV-ND71G/A3A-T
GMV-ND80G/A3A-T, MV-ND90G/A3A-T
GMV-ND100G/A3A-T
220-240V ~ 50Hz 6 1 1
GMV-ND22G/A8A-T,GMV-ND28G/A8A-T
GMV-ND36G/A8A-T,GMV-ND45G/A8A-T
GMV-ND50G/A8A-T,GMV-ND56G/A8A-T
GMV-ND63G/A8A-T,GMV-ND71G/A8A-T
GMV-ND80G/A8A-T,GMV-ND90G/A8A-T
GMV-ND100G/A8A-T
220-240V ~ 50Hz 6 1 1
Notes:
①Use copper wire only as unit’s power cord. Operating temperature should be within its rated
value.
②If the power cord is more than 15m long, please increase properly the sectional area of
power cord to avoid overload, which may cause accident.
③Above selection requirements: Power cord size is based on BV single-core wire (2~4pc) at
40°Cambient temperature when laying across plastic pipe. Air switch is D type and used at
40°C. If actual installation condition varies, please lower the capacity appropriately
according to the specifications of power cord and air switch provided by manufacturer.
④If 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.
⑤Install cut-off device near the unit. The minimum distance between each stage of cut-off
device should be 3mm(The same for both indoor unit and outdoor unit).

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
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4 Installation Instructions
4.1 Installation of Indoor Unit
Fig 4.1
Below are dimensions of W, H, D for different models:
Unit: mm
Item
Model
W H D
GMV-N22~28G/A3A-K
GMV-N22~28G/A2A-K
GMV-N22~28G/A4A-K
GMV-N22~28G/A8A-K
GMV-N22~28G/C9A-K
GMV-N22~28G/E3A-K
GMV-N22~28G/A3A-D
GMV-N22~28G/A8A-D
GMV-N22~28G/E3A-D
GMV-N22~28G/B3A-D
GMV-ND22~28G/A3A-T
GMV-ND22~28G/A8A-T
843 275 180
GMV-N36~50G/A3A-K
GMV-N36~50G/A2A-K
GMV-N36~50G/A4A-K
GMV-N36~50G/A8A-K
GMV-N36~50G/C9A-K
GMV-N36~50G/E3A-K
GMV-N36~50G/A3A-D
GMV-N36~50G/A8A-D
GMV-N36~50G/E3A-D
GMV-N36~50G/B3A-D
GMV-ND36~50G/A3A-T
GMV-ND36~50G/A8A-T
940 298 200
GMV-N56~71G/A3A-K
GMV-N56~71G/A2A-K
GMV-N56~71G/A4A-K
GMV-N56~71G/A8A-K
GMV-N56~71G/C9A-K
GMV-N56~71G/E3A-K
GMV-N56~71G/A3A-D
GMV-N56~71G/A8A-D
GMV-N56~71G/E3A-D
GMV-N56~71G/B3A-D
GMV-ND56~71G/A3A-T
GMV-ND56~71G/A8A-T
1008 319 221

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
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Item
Model
W H D
GMV-ND80~100G/A3A-T
GMV-ND80~100G/A8A-T
1350 326 258
4.2 The installation of the rear panel
Unit: mm
Fig 4.2
①Find the horizontal position with the gradienter; Since the drainage pipe is on the left side, it
is necessary to adjust the rear panel to make its left side a little bit lower.
②Fix the rear panel on the wall by bolts.
③After installing the rear panel, pull it by hands to check if it is secured enough. The hang
panel should support the weight of an adult (60kg), and the weight shared by every bolt
should be fairly even.
④The diameter showed in Fig.4.2.
4.3 Preparation of the piping hole
(1) Make the piping hole (Φ55mm or Φ70mm) in the wall at a slight downward slant to the
outdoor side. The center of the hole should be determined referring to Fig.4.2.
(2) Insert the piping-hole sleeve into the hole to prevent the connected piping and wiring from
being damaged when passing through the hole.
4.4 Installation of the drainage pipe
(1) For proper draining, the drain hose should be placed at a downward sloping.
(2) Do not wrench or bend the drain hose or flood its end by water. (Fig.4.4)
(3) Wrap the drain hose with heat resistant material.
(4) It is not allowed to connect the condensate drain pipe into waste pipe or other pipelines
which are likely to produce corrosive or peculiar smell to prevent the smell from entering
indoors or corrupt the unit.
(5) It is not allowed to connect the condensate drain pipe into rain pipe to prevent rain water
from pouring in and cause property loss or personal injury.
(6) Condensate drain pipe should be connected into special drain system for air conditioner.

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
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Fig 4.4
4.5 Installation the connection pipes
Connect the ends of the connection pipe with two leading pipes, and then tighten the joint nuts
tightly.
Connect the connect pipe with the two relative leading pipe, tie the nut on tie –in of the connect
pipe tightly.
Notes:
①Be careful in bending the connection pipes, or you would damage the pipes.
②If the tightening torque for the flare nut is too great, leakage would happen.
5 Wiring Work
Warning!
Before obtaining access to terminals, all supply circuits must be disconnected.
Notes:
①Units must be earthed securely, or it may cause electric shock.
②Please carefully read the wiring diagram before carry out the wiring work, incorrect wiring
could cause malfunction or even damage the unit.
③The unit should be powered by independent circuit and specific socket.
④The wiring should be in accordance with related regulations in order to ensure the units
reliable running.
⑤Install circuit breaker for branch circuit according to related regulations and electrical
standards.
⑥Keep cable away from refrigerant pipings, compressor and fan motor.
⑦The communication wires should be separated from power cord and connection wire
between indoor unit and outdoor unit.
⑧Adjust the static pressure via wired controller according to site circumstance.
5.1 Connect Cables and Terminals of Wiring Board
Connection of Wire and Patch Board Terminal.
(1) The connection of wire (as shown in fig 5.1.1).
1) Strip about 25mm insulation of the wire end by stripping and cutting tool.

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
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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 5.1.2).
1) Strip about 10mm 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
Fig 5.1.1 Fig 5.1.2
5.2 Power Cord Connection
Note:
All indoor units must be unified of power supply so that they can be powered ON/OFF at the
same time.
Fig 5.2
Air conditioning unit uses single-phase power supply, and is equipped with power cord, plug the
power cord directly into the unified power outlet.
5.3 Connection of Communication Line of IDU and ODU
(1) Open the cover of electric box of indoor unit.
(2) Lead the communication line across the rubber ring.

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
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(3) Connect the communication line to terminal D1 and D2 on the 4-digit wiring board of indoor
unit, as shown in Fig.5.3.1.
Fig 5.3.1
Fig 5.3.2
(4) Secure the communication line with the wire clamp on the electric box.
(5) In order to ensure the reliability of communication between IDU and ODU and the
communication among each IDU, add a matched resistance(supplied in a package before
ex-factory) on the wiring board of the last indoor unit in a series connection. The matched
resistance should be connected in parallel between terminal screw D1 and D2, as shown in
Fig.5.3.2.
5.4 Connection of Communication Line of Wired Controller
(1) Open the cover of electric box of indoor unit.
(2) Lead the communication line of wired controller across 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.
5.5 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.
(4) One wired controller can control 16 indoor units in maximum at the same time.
Notes:
①The type of indoor units must be the same if they are controlled by the same wired controller.
②When the indoor unit is controlled by two wired controllers, the addresses of the two wired

Multi Variable Air Conditioners Wall Mounted Type Indoor Unit
13
controllers should be different through address setting. Address 1 is for main controller;
Address 2 is for slave controller. Detailed setting please refer to the instruction manual of
wired controller.
5.6 Installation of the indoor unit
(1) When routing the piping and wiring from the left or right side of the indoor unit, it is
necessary to cut off the tailings of the pipe left on the holder of the unit. (Shown in Fig.5.6)
1) Cut down tailings 1 when only the power cord is led.
2) Cut down tailings 1,2 (or 1,2,3) when the connection cord and wire are led.
3) The piping types ①,②,③are recommended.
(2) Let the tubing and cord pass though the piping hole after tied up (refer to Fig .5.6 (d)).
(3) Hang the claw behind the indoor unit on the pothook on the wall panel, and move the unit left
and right to check if the body is firm.
(4) Guarantee that the installation height of the indoor unit should be 2.5m above the floor.
Fig 5.6
6 The Best Usage Method
(1) Adjust the set temperature properly in proper to prevent electricity wasting. It is better to
control the difference of the indoor and outdoor temperatures within 5°C.
(2) The better effect will be maintained by adjusting the guide louver downward for heating and
horizontal for cooling.
(3) When the air conditioner is running, don’t open windows or doors for long time, otherwise
the efficiency of unit will be lowered.

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14
(4) Prevent the cooled air blowing to body directly for long time and making indoor temperature
too low, for it is bad for health.
(5) Do not pour water to unit or clean it by water, otherwise a malfunction or electric shock may
happen.
(6) Do not mangle the power cord and the communication cord. The damaged power cord and
communication cord can only be replaced by the specified ones.
(7) This air conditioner allows voltage fluctuation within 220±10%V.
(8) This air conditioner cannot be used for drying clothes and refrigerating food, etc.
7 Maintenance Method
Warning：
(1) Do turn off the unit and cut off the power when cleaning the air conditioner, otherwise electric
shock may happen.
(2) Do not make the air conditioner wet or electric shock may be incurred; Ensure that the air
conditioner will not be cleaned by water rinsing under any circumstance.
(3) Volatile liquid like thinner or gasoline would damage the appearance of the air conditioner.
(Only soft dry cloth and wet cloth moistened with neutral detergent could be used to clean
the surface panel of the air conditioner.)
7.1 Cleaning panel
Note：
Do take down it before cleaning.
①Pull along the direction of arrows to take down the panel.
②Clean the panel
Clean it with a soft-hair brush, water and neutral cleaning fluid, and then dry it.
Caution：
Do not use water above 45°C to wash the panel to prevent decoloration or deformation.
Install the panel
As shown in Fig.7.1.1, install the stands of both ends of the panel into the slot and put the middle
rotating shaft into the groove, then place the panel and clasp back along the arrow direction.
Fig 7.1.1 Fig 7.1.2
7.2 Cleaning the air filters
Clean it once every 3 months; When the usage environment has lots of dust, it should be cleaned
more frequently.
(1) Take down the air filter.

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15
As shown in Fig.7.2.1, open the surface panel by holding the both ends of groove along the
arrow direction, and then take the air filter out downward.
(2) Clean the filter.
Use cleaner or water to wash the filter; If the filter is too dirty ( like oil stain on it ), warm water
( lower than 45°C) with neutral detergent can be used, then dry it in the shade.
Note:
①Do not clean the filter by hot water higher than 45°C for preventing fade or deformation.
②Do not burn it on fire or the filter would catches fire or deformation.
(3) Install air filter
Install the air filter properly along the arrow direction, making the side marked “Front” facing
yourself and then place the panel back.
Fig 7.2.1 Fig 7.2.2
7.3 Check before the usage season
(1) Check if there is blockage in the inlet or outlet vent of the air conditioner.
(2) Check if the earth wire is earthed reliably.
(3) Check if the batteries in the wireless remote controller have been replaced.
(4) Check if the air filter has been installed properly
In order to start up the air conditioner smoothly after it has been turned off for a long time period,
energize the unit 8 hours before turning it on.
7.4 Check after the usage season
(1) Clean filter and body of air conditioner.
(2) Cut off the main power supply of air conditioner.
8 Table of Error Codes for Indoor Unit
Error
Code
Content Error
Code
Content Error
Code
Content
L0 Indoor Unit Error L9
Quantity Of Group Control Indoor
Units Setting Error d8 Water Temperature Sensor
Error
L1 Indoor Fan Protection LA Indoor Units Incompatibility Error d9 Jumper Cap Error
L2 E-heater Protection LH Low Air Quality Warning dA Indoor Unit
Network Address Error
L3 Water Full Protection LC Outdoor-Indoor Incompatibility
Error dH Wired Controller Circuit Board
Error
L4 Wired Controller Power
Supply Error d1 Indoor Unit Circuit Board Error dC Capacity DIP Switch Setting
Error

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Error
Code
Content Error
Code
Content Error
Code
Content
L5 Anti-freezing Protection d3 Ambient Temperature Sensor
Error
dE Indoor Unit CO2Sensor Error
L7 No Master Indoor Unit
Error
d4 Inlet Pipe Temperature Sensor
Error
C0 Communication Error
L8 Power Insufficiency
Protection
d6 Outlet Pipe Temperature Sensor
Error AJ Filter Cleaning Reminding
db Special Code:
Project Debugging Code
dL Outlet Air Temperature Sensor
Error
—
—
9 Malfunction Analyzing
Warning:
Do not repair the air conditioner by yourself for the incorrect repair would lead to electric
shockor fire. Please contact the service center and have the unit repaired by the specialized
personnel. Check the following items before contacting the service center, as it could save your time
and cost.
Malfunction Phenomena Malfunction Analyzing
The air conditioner could not start
up just after turned off
The over load protection switch of the unit makes it run after 3
minutes delay.
Odor gave out when the unit just
was turned on Odors or cigarette smoke which has been absorbed in is discharged out.
Slight bicker was heard when the
unit was running. This is the sound of the running refrigerant.
Mist came from the air outlet vent
when cooling. Indoor air is cooled rapidly.
Creak sound was heard when the
unit was running or after it was
turned off.
It is the sound emitted by the expansion of the panel and other parts
because of the temperature change.
The air conditioner failed to run.
Is the power supply cut off ?
Is the power supply connected ?
Is the circuit protector started aside ? Is the voltage too high or too low ?
If TIMER had been set on the wireless remote controller ?
The cooling (heating) effect of the
air conditioner was not good.
Is the temperature set properly ?
Is the inlet, outlet vent of the outdoor unit blocked ?
Is the air filter too dirty to cause blockage ?
Are windows and doors closed ? Is the air speed too low ?
Is there other heat source in the room ?
The wireless remote controller
cannot work.
In the even
t that the battery is replaced but the wireless remote control still
malfunctions, then open the back cover and press.
“ACL” button to make it normal.
When the air conditioner is under abnormal interference or its functions are
changed too frequently, then the wireless remote controller would works
improperly. At this time, it is available to resume the normal operation
through de-energizing and then energizing the wireless controller again.
Is the controller within the receiving area? or is there blockage? Check if
the voltages of batteries in the wireless remote controller are sufficient;
Otherwise change the batteries.