Gree DC Inverter U-match Series User manual

Owner's Manual
Original Instructions
Air Conditioners
DC Inverter U-match Series Cassette Type Unit
Models:
Indoor Unit Outdoor Unit
GUD35T/A-T GUD35W/NhA-T
GUD50T/A-T GUD50W/NhA-T
GUD71T/A-T GUD71W/NhA-T
GUD85T/A-T GUD85W/NhA-T
GUD100T/A-T GUD100W/NhA-T GUD100W/NhA-X
GUD125T/A-T GUD125W/NhA-T GUD125W/NhA-X
GUD140T/A-T GUD140W/NhA-T GUD140W/NhA-X
GUD160T/A-T GUD160W/NhA-X

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 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 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) Indoor unit must not be installed in a laundry.
(9) 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.
(10) Gree Electric Appliances Inc. of Zhuhai assumes no responsibility for
personal injury, property loss or equipment damage caused by improper
installation and commissioning, unnecessary maintenance, or not following
relevant national rules and regulations, industrial standards and
requirements in this instruction manual.
(11) The final right to interpret for this instruction manual belongs to Gree
Electric Appliances Inc. of Zhuhai.

Contents
1 Safety Notices (Please be sure to abide).............................1
2 Product Introduction.............................................................5
2.1 Overall Layout........................................................................5
2.2 Product Operating Range ......................................................6
2.3 Standard Accessories.............................................................6
3 Installation............................................................................7
3.1 Installation Preparation ..........................................................7
3.2 Unit Installation ....................................................................18
3.3 Electrical Installation ............................................................37
3.4 Check after Installation.........................................................50
3.5 Test Running........................................................................50
4 Operation Specification......................................................51
5 Maintenance......................................................................52
5.1 Failures Not Caused by Faults of the AC..............................52
5.2 Error Code...........................................................................54
5.3 Unit Maintenance.................................................................56
5.4 Notice on Maintenance ........................................................59
5.5 After-Sales Services.............................................................66
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.

DC Inverter U-match Series Cassette Type Unit
1
1 Safety Notices (Please be sure to abide)
SPECIAL WARNING:
(1) Be sure to comply with national gas regulations.
(2) Do not pierce or burn.
(3) Do not use means to accelerate the defrosting process or to clean, other
than those recommended by the manufacturer.
(4) Be aware that refrigerants may not contain an odor.
(5) Appliance shall be installed, operated and stored in a room with a floor
area larger than"X" m2（"X" see section 3.1.1）.
(6) The appliance shall be stored in a room without continuously operating
ignition sources (for example: open flames, an operating gas appliance
or an operating electric heater).
PROHIBITED: This sign indicates that the operation must be prohibited.
Improper operation may cause severe damage or death to people.
WARNING: If not abide strictly, it may cause severe damage to the unit or
the people.
NOTICE: If not abide strictly, it may cause slight or medium damage to the
unit or the people.
OBSERVED: This sign indicates that the items must be observed.
Improper operation may cause damage to people or property.
WARNING！
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.
Please read this operating manual carefully before operating the unit.
The air conditioner is charged with inflammable refrigerant R32 (GWP:
675).
Before using the air conditioner, please read the instruction manual.

DC Inverter U-match Series Cassette Type Unit
2
Before installing the air conditioner, please read the instruction manual.
Before repairing the air conditioner, please read the instruction manual.
The figures in this manual may be different with the material objects,
please refer to the material objects for reference.
PROHIBITED
(1) The air conditioner should be grounded to avoid electric shock. Do not connect
the ground wire to gas pipe, water pipe, lightning arrester or telephone wire.
(2) The appliance shall be stored in a well-ventilated area where the room size
corresponds to the room area as specified for operation.
(3) The appliance shall be stored in a room without continuously operating open
flames (for example an operating gas appliance) and ignition sources (for
example an operating electric heater).
(4) According to federal/state/local laws and regulations, all packages and
transportation materials, including nails, metal or wooden parts, and plastic
packing material, must be treated in a safe way.
WARNING
(1) Please install according to this instruction manual. Installation must be
performed in accordance with the requirement of NEC and CEC by authorized
personnel only.
(2) Any person who is involved with working on or breaking into a refrigerant circuit
should hold a current valid certificate from an industry-accredited assessment
authority, which authorises their competence to handle refrigerants safely in
accordance with an industry recognised assessment specification.
(3) Servicing shall only be performed as recommended by the equipment
manufacturer. Maintenance and repair requiring the assistance of other skilled
personnel shall be carried out under the supervision of the person competent in
the use of flammable refrigerants.
(4) The appliance shall be installed in accordance with national wiring regulations.
(5) The fixed wires connecting to the appliance must be configured with all-pole
disconnection device under voltage grade III according to wiring rules.

DC Inverter U-match Series Cassette Type Unit
3
WARNING
(6) Air conditioner should be stored with protective measures against mechanical
damage caused by accident.
(7) If the installation space for air conditioner pipe is too small, adopt a protective
measure to prevent the pipe from physical damage.
(8) During installation, use the specialized accessories and components, otherwise
water leakage, electric shock or fire hazard may occur.
(9) Please install the air conditioner in a secure place that can withstand the weight
of air conditioner. Insecure installation may cause the air conditioner falling
down and lead to injury.
(10)Be sure to adopt independent power circuit. If the power cord is damaged, it
must be repaired by the manufacturer, service agent or other professional
agents.
(11)The air conditioner can be cleaned only after it is turned off and
power-disconnected, otherwise electric shock may occur.
(12)The air conditioner is not intended to be cleaned or maintained by children
without supervision.
(13)Do not alter the setting of pressure sensor or other protective devices. If the
protective devices are short-circuited or changed against rules, fire hazard or
even explosion may occur.
(14)Do not operate the air conditioner with wet hands. Do not wash or sprinkle
water on the air conditioner, otherwise malfunction or electric shock will occur.
(15)Do not dry the filter with naked flame or an air blower; otherwise the filter will be
out of shape.
(16)If the unit is to be installed in a small space, please adopt protective measures
to prevent the concentration of refrigerant from exceeding the allowable safety
limit; excessive refrigerant leakage may lead to explosion.
(17)When installing or re-installing the air conditioner, please keep the refrigerant
circuit away from substances other than the specified refrigerant, such as air.
Any presence of foreign substances will cause abnormal pressure change or
even explosion, resulting in injury.

DC Inverter U-match Series Cassette Type Unit
4
NOTICE
(1) Do not put a finger or other objects into the air inlet or air return grill.
(2) Please adopt safety protection measures before touching the refrigerant pipe,
otherwise your hands may be hurt.
(3) Please arrange the drain pipe according to the instruction manual.
(4) Never stop the air conditioner by directly cutting off the power.
(5) Please select the proper copper pipe according to the requirement for pipe
thickness.
(6) Indoor unit can only be installed indoors while outdoor unit can be installed
either indoors or outdoors. Never install the air conditioner in the following
places:
a)Places with oil smoke or volatile liquid: plastic parts may deteriorate and fall
off or even cause water leakage.
b)Places with corrosive gas: copper pipe or the welding parts may be
corroded and cause refrigerant leakage.
(7) Adopt proper measures to protect the outdoor unit from small animals because
they may damage the electric components and cause malfunction of the air
conditioner.
OBSERVED
(1) If wired control is to be used, it should be connected first before powering up
the unit, otherwise the wired control may not be able to use.
(2) When installing the indoor unit, keep it away from television, wireless waves,
and fluorescent.
(3) Only use soft dry cloth or slightly wet cloth with neutral detergent to clean the
casing of the air conditioner.
(4) Before operating the unit under low temperature, connect it to power for 8
hours. If it is stopped for a short time, for example, one night, do not cut off the
power (This is to protect the compressor).

DC Inverter U-match Series Cassette Type Unit
5
2 Product Introduction
2.1 Overall Layout

DC Inverter U-match Series Cassette Type Unit
6
2.2 Product Operating Range
Cooling
Heating
Outdoor temperature DB(℃)
-20~48
-20~24
Indoor temperature DB/WB(℃)
（Maximum）
32/23
27/-
2.3 Standard Accessories
Indoor Unit Accessories
No.
Name
Appearance
Q'ty
Usage
1
Drain Hose
1
To connect with the
hard PVC drain pipe
2
Bolt with Washer
4
To fix the installation
paperboard on the unit.
3
Washer
10
To be used together with
the hanger bolt for
installing the unit.
4
Installation
Paperboard
1
Used for ceiling drilling
5
Gasket Mounting
Board
4
Used to prevent gasket
from falling off
6
Wireless Controller
+Battery
1+2
To control the indoor unit
7
Sealing Plaster
1
Used for holes through
the wall
8
Fastener
6
To fasten the sponge/
Heat-shringkable
Bushing
9
Insulation
1
To insulate the gas pipe
10
Insulation
1
To insulate the liquid
pipe
11
Sponge
4
To insulate the drain
pipe
12
Removal-Proof
Screw Nut
1
To connect gas pipe
13
Removal-Proof
Screw Nut
1
To connect liquid pipe
14
Enswathement
2
Used for winding the
pipe connecting the
indoor and outdoor units
15
Heat-Shringkable
Bushing
1
Connect the front panel
to the main body

DC Inverter U-match Series Cassette Type Unit
7
Indoor Unit Accessories
No.
Name
Appearance
Q'ty
Usage
16
Flannelette
1
To prevent the
communication wire
from reaching out the
electric raceway（only
35/50）
17
Bolt Assembly
4
Connect the panel and
body（only 35/50）
Outdoor Unit Accessories
No
Name
Appearance
Q'ty
Usage
1
Drain Plug
1or3
To plug the unused
drain hole
2
Drainage
Connecter
1
To connect with the hard
PVC drain pipe
3 Installation
3.1 Installation Preparation
3.1.1 Notice on Installation
(1) Notice on Refrigerant Concentration before Installation.
This air conditioner uses R32 refrigerant. The construction area for installation,
operation and storage of the air conditioner must be larger than the minimum
construction area. The minimum area for installation is determined by:
1) Refrigerant charging quantity for the entire system (ex-factory charging
quantity + additional charging quantity).
2) Checking out in the applicable tables:
a) For indoor unit, confirm the model of indoor unit and check the
corresponding table.
b) For outdoor unit that is installed or placed indoors, select the corresponding
table according to the height of the room.
Height of the room
Select the applicable table
＜1.8m
Floor standing type
≥1.8m
Wall mounted type

DC Inverter U-match Series Cassette Type Unit
8
3) Refer to the following table to check out the minimum construction area.
Ceiling type
Wall mounted type
Floor standing type
Weight(kg)
Area
(m2)
Weight(kg)
Area
(m2)
Weight (kg)
Area
(m2)
＜1.224
—
＜1.224
—
＜1.224
—
1.224
0.956
1.224
1.43
1.224
12.9
1.4
1.25
1.4
1.87
1.4
16.8
1.6
1.63
1.6
2.44
1.6
22.0
1.8
2.07
1.8
3.09
1.8
27.8
2.0
2.55
2.0
3.81
2.0
34.3
2.2
3.09
2.2
4.61
2.2
41.5
2.4
3.68
2.4
5.49
2.4
49.4
2.6
4.31
2.6
6.44
2.6
58.0
2.8
5.00
2.8
7.47
2.8
67.3
3.0
5.74
3.0
8.58
3.0
77.2
3.2
6.54
3.2
9.76
3.2
87.9
3.4
7.38
3.4
11.0
3.4
99.2
3.6
8.27
3.6
12.4
3.6
111
3.8
9.22
3.8
13.8
3.8
124
4.0
10.2
4.0
15.3
4.0
137
4.2
11.3
4.2
16.8
4.2
151
4.4
12.4
4.4
18.5
4.4
166
4.6
13.5
4.6
20.2
4.6
182
4.8
14.7
4.8
22.0
4.8
198
5.0
16.0
5.0
23.8
5.0
215
5.2
17.3
5.2
25.8
5.2
232
5.4
18.6
5.4
27.8
5.4
250
5.6
20.0
5.6
29.9
5.6
269
5.8
21.5
5.8
32.1
5.8
289
6.0
23.0
6.0
34.3
6.0
309
6.2
24.5
6.2
36.6
6.2
330
6.4
26.1
6.4
39.1
6.4
351
6.6
27.8
6.6
41.5
6.6
374
6.8
29.5
6.8
44.1
6.8
397
7.0
31.3
7.0
46.7
7.0
420
7.2
33.1
7.2
49.4
7.2
445
7.4
34.9
7.4
52.2
7.4
470
7.6
36.9
7.6
55.1
7.6
496
7.8
38.8
7.8
58.0
7.8
522
8.0
10.8
8.0
61.0
8.0
549

DC Inverter U-match Series Cassette Type Unit
9
(2) When installing an outdoor unit with single or double fans, hold the handle and
then lift it up slowly (Do not touch the condenser with your hand or other
objects). If you hold only one side of the casing, the casing may be pulled out of
shape, so please hold the base of the unit as well. During installation, be sure to
use the components specified in the instruction manual.
(3) Please use the charging machine specialized for R32 refrigerant; Before
charging, keep the refrigerant tank in an upright position. After charging, stick a
label on the air conditioner saying no excessive charging.
(4) The following tools will be used: 1) Liquid-level gauge; 2) Screwdriver; 3)
Electric driven rotary hammer; 4) Drill; 5) Pipe expander; 6) Torque wrench; 7)
Open-end wrench; 8) Pipe cutter; 9) Leak detector; 10) Vacuum pump; 11)
Pressure gauge; 12) Universal meter; 13) Hexagon wrench; 14) Tapeline.
3.1.2 Selection of Installation Location
WARNING
①.If the outdoor unit will be exposed in strong wind, it must be securely located,
otherwise it may fall down.
②.Install the air conditioner at a place where the inclination is less than 5°.
③.Do not install the unit at a place with direct sunlight.
④.Do not install the unit at a place with leakage of inflammable gas.
Selection of Installation Location for Indoor Unit (Select a location
pursuant to the following condition).
(1) Air inlet and outlet of the indoor unit should be away from obstacles to make
sure the unit’s air flow can reach the entire room. Do not install the unit in a
kitchen or a laundry.
(2) Install the unit in a room without naked flame, fire source or the risk of getting
the refrigerant on fire.
(3) Select a location that can withstand 4 times the unit weight without increasing
operating noise and vibration.
(4) The installation location must be level.
(5) The indoor piping length and wiring length should be within the allowable range.
(6) Select a place that can easily drain condensate and connect to the drain system
of the air conditioner.

DC Inverter U-match Series Cassette Type Unit
10
(7) If hoisting screw bolts are to be used, check whether the installation location is
safe enough. If not safe, reinforce the location before installation.
(8) Indoor unit, power cord, connecting wires and communication cords should be
at least 1m from television and radio. This is to prevent image interference or
noise (Even at a distance of 1m, a very strong electric wave may still generate
noise).
Selection of Installation Location for Outdoor Unit (Select a location
pursuant to the following condition).
(1) Noise and air flow produced by the outdoor unit will not disturb the neighbors.
(2) Select a location that is safe and away from animals and plants. If not, please
add safety fences to protect the unit.
(3) Install at a place with good ventilation. Make sure the outdoor unit stays at a
well-ventilated place with no obstacles nearby that may obstruct the air inlet and
outlet.
(4) The installation location should be able to withstand the weight and vibration of
outdoor unit and allow the installation to be carried out safely.
(5) Avoid installing at a place with leakage of inflammable gas, oil smoke or
corrosive gas.
(6) Keep it away from strong wind because strong wind will affect the outdoor fan
and lead to insufficient air flow volume and thus affecting the unit’s
performance.
(7) Install the outdoor unit at a place that is convenient for it to be connected to the
indoor unit.
(8) Away from any object that may get the air conditioner generating noise.
(9) Install the outdoor unit at a place where condensate can be easily drained.
3.1.3 Unit Dimension
WARNING
①.Install the indoor unit in a location which can withstand a load of at least five
times the weight of the main unit and which will not amplify sound or vibration.
②.If the installation location is not strong enough, the indoor unit may fall and
cause injuries.
③.If the job is done with the panel frame only, there is a risk that the unit will
come loose. Please take care.

DC Inverter U-match Series Cassette Type Unit
11
(1) Indoor unit
Gas Pipe
Liquid Pipe
Drain Pipe
A(Decoration panel)
C (Indoor unit)
B (Ceiling)
D (Suspension bolt pitch)
A(Decoration panel)
C (Indoor unit)
B (Ceiling)
E(Suspension bolt pitch)
G
F
NOTICE
Drilling of ceiling opening and installation of air conditioner must be performed by
professionals!
Unit: mm
Dimensions
Model
A
B
C
D
E
F
G
GUD35T/A-T
620
580
570
520
560
265
140
GUD50T/A-T
620
580
570
520
560
265
140
GUD71T/A-T
950
870
840
660
790
240
134
GUD85T/A-T
950
870
840
660
790
240
134
GUD100T/A-T
950
870
840
660
790
240
134
GUD125T/A-T
950
870
840
660
790
290
134
GUD140T/A-T
950
870
840
660
790
290
134
GUD160T/A-T
950
870
840
660
790
290
134

DC Inverter U-match Series Cassette Type Unit
12
(2) Outdoor unit
GUD35W/NhA-T, GUD50W/NhA-T, GUD71W/NhA-T, GUD85W/NhA-T.
A
F
D
E
G
C
B
GUD100W/NhA-T, GUD125W/NhA-T, GUD140W/NhA-T, GUD100W/NhA-X,
GUD125W/NhA-X, GUD140W/NhA-X.
A
D
E
G
B
C

DC Inverter U-match Series Cassette Type Unit
13
GUD160W/NhA-X.
A
C
D
E
G
B
Unit: mm
Dimensions
Model
A
B
C
D
E
F
G
GUD35W/NhA-T
818
378
596
550
348
887
302
GUD50W/NhA-T
818
378
596
550
348
887
302
GUD71W/NhA-T
892
396
698
560
364
952
340
GUD85W/NhA-T
920
427
790
610
395
1002
370
GUD100W/NhA-T
940
530
820
610
486
/
460
GUD100W/NhA-X
940
530
820
610
486
/
460
GUD125W/NhA-T
940
530
820
610
486
/
460
GUD125W/NhA-X
940
530
820
610
486
/
460
GUD140W/NhA-T
940
530
820
610
486
/
460
GUD140W/NhA-X
940
530
820
610
486
/
460
GUD160W/NhA-X
900
412
1345
572
378
/
340

DC Inverter U-match Series Cassette Type Unit
14
3.1.4 Diagram of Unit Installation Space and Location
(1) Diagram of installation space and location for outdoor unit (Notice: for best
performance of the outdoor unit, make sure its installation space conforms to
the following installation dimensions).
1) When one outdoor unit is to be installe
A~E
HbHdH
(mm)
a
b
c
d
e
B
—
≥100
A,B,C,
—
≥300
≥100
≥100
B,E
—
≥100
≥1000
A,B,C,E
—
≥300
≥150
≥150
≥1000
D
—
≥1000
D,E
—
≥1000
≥1000
B,D
Hb＜Hd
Hd＞H
≥100
≥1000
Hb＞Hd
Hd＜H
≥100
≥1000
B,D,E
Hb＜Hd
Hb≤1/2H
≥250
≥2000
≥1000
1/2H＜Hb≤H
≥250
≥2000
≥1000
Hb＞H
Prohibited
Hb＞Hd
Hd≤1/2H
≥100
≥2000
≥1000
1/2H＜Hd≤H
≥200
≥2000
≥1000
Hd＞1/2H
Prohibited

DC Inverter U-match Series Cassette Type Unit
15
2) When two or more outdoor units are to be installed side by side.
A~E
HbHdH
(mm)
a
b
c
d
e
A,B,C
—
≥300
≥300
≥1000
A,B,C,E
—
≥300
≥300
≥1000
≥1000
D
—
≥2000
D,E
—
≥2000
≥1000
B,D
Hb＜Hd
Hd＞H
≥300
≥2000
Hb＞Hd
Hd≤1/2H
≥250
≥2000
1/2H＜Hd≤H
≥300
≥2500
B,D,E
Hb＜Hd
Hb≤1/2H
≥300
≥2000
≥1000
1/2H＜Hb≤H
≥300
≥2500
≥1000
Hb＞H
Prohibited
Hb＞Hd
Hd≤1/2H
≥250
≥2500
≥1000
1/2H＜Hd≤H
≥300
≥2500
≥1000
Hd＞1/2H
Prohibited

DC Inverter U-match Series Cassette Type Unit
16
3) When outdoor units are installed in rows.
≥200
≥4000
≥200
≥2000
≥400
≥400
≥4500
≥
2000
≥
600
Hb
H
b
Hb H
(mm)
Hb≤1/2H
b≥250
1/2H＜Hb≤H
b≥300
Hb＞H
Prohibited