Gree GMV series User manual

EN ORIGINAL INSTRUCTIONS, VER. 01 2020-12-04
USER MANUAL
[ GMV DUCT UNITS WITH FILTER & PUMP ]
GMV-ND22–72PL/B-T
GMV-ND22–71PLS/B1-T
GMV-ND18–71PLS/C-T

IMPORTANT NOTE:
Read this manual carefully before installing or operating your new air conditioning unit.
Make sure to save this manual for future reference.

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 strictinspection 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 notdisassemble the unit by yourself. You can contact with
the special maintenance center of our company if necessary.
(5) 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).
(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. 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.
(7) The final right to interpret for this instruction manual belongs to Gree ElectricAppliances Inc.
of Zhuhai.

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 ordispute 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 them) ....................................................... 1
2 Product Introduction ................................................................................................. 3
2.1 Names of Key Components.............................................................................................. 3
2.2 Rated Working Condition.................................................................................................. 3
3 Preparations for Installation..................................................................................... 3
3.1 Standard Fittings .............................................................................................................. 4
3.2 Location for Installation..................................................................................................... 4
3.3 Requirements for Communication Line............................................................................. 5
3.4 Wiring Requirements........................................................................................................ 7
4 Installation Instructions ............................................................................................ 8
4.1 Installation of Indoor Unit.................................................................................................. 8
4.2 Pipe Connection..............................................................................................................10
4.3 Installation and Test of Drain Pipe....................................................................................11
4.4 Installation of Air Duct......................................................................................................15
4.5 Installation of Wired Controller.........................................................................................17
5 Wire Connection ...................................................................................................... 17
5.1 Connection of Wire and Wiring Board Terminal................................................................18
5.2 Power Cord Connection...................................................................................................19
5.3 Connection of Communication Line of IDU and ODU.......................................................19
5.4 Connection of Communication Line of Wired Controller...................................................20
5.5 Instructions on Connecting Wired Controller and IDU Network........................................21
6 General Maintenance............................................................................................... 23
6.1 Cleaning of Air Filter ........................................................................................................23
6.2 Maintenance Before Use-season.....................................................................................23
6.3 Maintenance After Use-season........................................................................................23
7 Malfunction Codes of IDU ....................................................................................... 24
8 Troubleshooting....................................................................................................... 24

Multi Variable Air Conditioners Duct Type Indoor Unit
1
1 Safety Notices (Please be sure to abide them)
WARNING : If not abide them strictly, it may cause severe damage to the unit or the people.
NOTICE: If not abide them strictly, it may cause slight or medium damage to the unit or the
people.
This sign indicates that the items 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.
Follow this manual to
complete the installation
work. Please read this
manual carefully before
turning on or repairing the
unit.
Installation should be
performed by the distributor
or qualified technicians. Do
not install the product by
yourself. Improper
installation may lead to
water leakage, electric
shock or fire hazard, etc.
Before installation, please
check whether the power
supply is complied with that
specified on the nameplate
and check the safety of the
power supply.
The air conditioner must be
grounded reliably for
avoiding electric shock.
Please do not connect the
earthing wire to gas pipe,
water pipe, lightning rod or
telephone line.
Be sure to use special
accessories and parts for
installation to prevent water
leakage, electric shock and
fire hazard, etc.
If refrigerant leakage
happens, please ventilate
the room immediately.
Diameter of power cord
should be large enough. The
damaged power cord and
connection wire must be
replaced with special cables.
When the power cord is
connected, please fix the
electric box cover properly
to avoid safety accidents.
Never fail to comply with the
nitrogen-charging welding
process. Do charge nitrogen
when welding the pipes.
Never short circuit or
cancel the pressure switch
to prevent unit damage.
As for the unit controlled by
the wired controller, connect
the wired controller well
firstly and then energize the
unit; otherwise, the unit can’t
operate normally.
When installation is
finished, please check
whether the drainage
pipes, pipelines and electric
wires are connected
correctly to avoid water
leakage, refrigerant
leakage, electric shock or
fire, etc.

Multi Variable Air Conditioners Duct Type Indoor Unit
2
Do not insert fingers or
objects into air outlet or air
return grille.
Open the door and window
frequently to keep good
ventilation for avoiding
oxygen deficit when gas
heater or oil heater is used
in the room.
Never plug in or unplug the
power plug directly to turn
on or turn off the air
conditioner.
Once the air conditioner is
turned on, it can be turned
off only after it has
operated for 5min at least;
otherwise, it will affect the
oil return of compressor.
Do not allow children to
operate this air conditioner. Do not operate this air
conditioner with wet hands.
The air conditioner can be
cleaned only when it has
been turned off and the
power has been cut off;
otherwise, it may cause
electric shock or injury.
Never spray or flush water
towards the air conditioner;
otherwise, malfunction or
electric shock may happen.
Do not expose the air
conditioner to the moist or
corrosive environment.
Put through the power 8
hours in advance before
operation. Do not cut off the
power when the air
conditioner stops operation
for only about one night
(protect the compressor).
Volatile liquid, such as
diluent or gasoline, will
damage the appearance of
air conditioner. Only soft dry
cloth and wet cloth dipped
with neutral detergent can
be used to clean the outer
case of air conditioner.
Under cooling mode,
please don't set the room
temperature too low; keep
the temperature difference
between indoor and
outdoor within 5°C (41°F).
If there are any abnormal
circumstances (such as
burning smell, etc.), please
turn off the unit and cut off
the main power supply
immediately, and then
contact Gree appointed
service center. If those
abnormal circumstances still
exit, the unit may be
damaged and it may lead to
electric shock or fire hazard.
Do not repair the unit by
yourself. Wrong
maintenance may cause
electric shock or fire
hazard. Please contact
Gree appointed service
center for help.

Multi Variable Air Conditioners Duct Type Indoor Unit
3
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.
Install units according to national wiring codes.
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.
An all-pole disconnection device which has at least 3mm clearances in all poles, and disconnection must be
incorporated in the fixed wiring in accordance with the wiring rules.
Gree Electric Appliances, Inc. of Zhuhai will not assume responsibility for any personal injury or property loss caused
by improper installation, improper debugging, unnecessary repair or not following the instructions of this manual.
2 Product Introduction
2.1 Names of Key Components
Fig2.1
NO.
① ② ③ ④ ⑤ ⑥
Name Electric box water pump Air Outlet Hooker Air-return
Opening
Drain Pipe
2.2 Rated Working Condition
—
Indoor Side Condition
Outdoor Side Condition
Dry Bulb Temp(°C)
Wet Bulb Temp(°C)
Dry Bulb Temp(°C)
Wet Bulb Temp(°C)
Rated Cooling
27
19
35
24
Rated Heating
20
15
7
6
3 Preparations for Installation
NOTICE: Product graphics are only for reference. Please refer to actual products. Unspecified
measure unit is mm.

Multi Variable Air Conditioners Duct Type Indoor Unit
4
3.1 Standard Fittings
Please use the supplied standard fittings listed below as instructed.
No. Name Graphics Quantity Purpose
1
Wire controller package
(including wire controller,
emergency bottom case,
instruction manual, screws,
packing box)
1set Control indoor unit
2 Remote controller 0 or 1 Optional parts (including #7
batteries)
3 Sponge for drainage pipe 2 Wrap water pipe and rubber cork for
condenser
4 Insulating materials 2 Used for the joint of
gas pipe and liquid
pipe for indoor unit
5 Corrugated pipe 0 or 1 Diameter of air
pipe≥15.9mm
6 Union nut 1 or 2 One for the model
with corrugated pipe;
two for other models
7 Spring washer M8, nut M8, nut with washer M8, washer
M8 4 Used for hanging the
indoor unit
8 Tieline 6 Wrap the sponge at
the connection
position
9 Others
User Manual: 1 copy
Loosen-leaf of Instruction Manual: 1 copy (harmful substance content table)
Qualified Certificate: 1 copy
Bar Code : 1 copy
3.2 Location for Installation
(1) The top holder must be strong enough to support unit's weight.
(2) Drain pipe can drain water out easily.
(3) There is no obstacle at inlet or outlet. Please ensure good air circulation.
(4) In order to make sure the space for maintenance, please install the indoor unit according to
the dimension described below.
(5) Keep the unit away from heating source, inflammable gas or smoke.
(6) This is a concealed ceiling type unit.
(7) Indoor unit, outdoor unit, power cord and electric wire should stay at least 1m from the TV
set and radio. Otherwise, these electrical appliances may have image interference and noise
(Even if the distance is 1m, when there is strong electric wave, noise may still occur).
(8) The appliance shall not be installed in the laundry.

Multi Variable Air Conditioners Duct Type Indoor Unit
5
Fig 3.1
NOTICE:
①Installation of the unit must be in accordance with National Electric Codes and local
regulations.
②Improper 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.
③Do not connect power until all installation work is finished.
3.3 Requirements for Communication Line
NOTICE:
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 3.2