Gree FLEXX36HP230V1AO Operating instructions

Thank you for choosing our product.
Please read this Owner’s Manual carefully before operation and
retain it for future reference.
If you have lost the Owner's Manual, please contact your local
distributor or visit www.greecomcomfort.com/resources for the
electronic version.
Change for life
Thank you for choosing our product.
Please read this Installation & Owner’s Manual carefully before
operation and retain it for future reference.
If you lose this Manual, please contact your local distributor or
visit www.greecomcomfort.com/resources now to download and
file the electronic version.
Installation & Owner's Manual
Original Instructions
Air Conditioners
DC Inverter Series for R410A Unitary
Split Air Conditioner
Models:
Outdoor Unit
FLEXX36HP230V1AO
FLEXX60HP230V1AO

INTENTIONALLY BLANK

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 ina safe way and understand
the hazards involved. Children shall notplay with the appliance. Cleaning
and user maintenance shall notbe 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. Ifthe product isnot 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 ifnecessary.
(5) When the product isfaulted and cannot be operated, please contact with
our maintenance center assoon as possible by providing the following
information.
1) Contents of nameplate of product (model, cooling/heating capacity,
product No, manufacturing 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

revisions 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) If the supply cord is damaged, it must be replaced by a licensed HVAC
professional,or similarly qualified person in order to avoid a hazard.
(8) 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.
(9) The final right of interpretation of this instruction manual belongs to
Gree Electric Appliances 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) Altering,changing,maintaining or using the product with other
equipment without following the manufacturer's instruction manuals.
(3) After verification, the defect of product isdirectly caused by corrosive gas.
(4) After verification, defects are due to improper operation during
transportation of product.
(5) Operating,repairing or maintaining the unit without following the
instruction manual or related regulations.
(6) After verification, the problem or dispute is caused by the quality
specification or performance of parts and components produced by
other manufacturers.
(7) The damage is caused by natural calamities, the surrounding
environment or force majeure.

Contents
1 Safety Precautions ............................................................ 1
2 Product Introduction ......................................................... 5
2.1 Operating Range....................................................................5
2.2 Standard Accessories.............................................................5
2.3 Optional Accessories..............................................................5
3 Installation.......................................................................... 5
3.1 Installation Preparation ..........................................................5
3.2 Unit Installation ....................................................................11
3.3 Electrical Installation ............................................................18
3.4 Check after Installation.........................................................23
3.5 Test Running ........................................................................24
4 Maintenance ..................................................................... 25
4.1 Failures Not Caused by Faults of The AC ............................25
4.2 Error Code ...........................................................................27
4.3 Unit Maintenance .................................................................28
4.4 Notice on Maintenance ........................................................29
4.5 After-Sales Services.............................................................34
This marking indicates that this product should not be disposed with other
household wastes. 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 suggest proper
sources of environmentally safe recycling.

DC Inverter Series for R410A Unitary Split Air Conditioner
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1 Safety Precautions
Indicates a hazardous situation that, if not avoided, will result in
death or serious injury.
Indicates a hazardous situation that, if not avoided, could result
in death or serious injury.
Indicates a hazardous situation that, if not avoided, may result
in minor or moderate injury.
Indicates important but not hazard-related information, used to
indicate risk of property damage.
This product can’t be installed at corrosive, inflammable or
explosive environment or locations with special requirements, such as kitchens.
Do not install anywhere it will affect the normal operation or shorten the service
life of the unit, or cause a fire hazard or serious injury. For these applications,
please select equipment with anti-corrosive or anti-explosion capability.
Improper installation, adjustment, alteration, service, maintenance, or use
can cause explosion, fire, electrical shock, or other conditions which may cause
death, personal injury, or property damage. Consult a qualified installer, service
agency, or your distributor or branch for information or assistance. The qualified
installer or agency must use factory--authorized kits, parts or accessories
when modifying this product. Refer to the individual instructions packaged with
the kits or accessories when installing. Follow all safety codes. Wear safety
glasses, protective clothing, and work gloves. Use quenching cloth for brazing
operations. Have a fire extinguisher available. Read these instructions thoroughly
and follow all warnings or cautions included in literature and attached to the
unit. Consult local building codes and National Electrical Code (NEC) for
special requirements. Recognize safety information. This is the safety--alert
symbol .
When you see this symbol on the unit and in instructions or manuals, be alert
to the potential for personal injury. Understand these signal words:
DANGER, WARNING,CAUTION and NOTICE. These words are used with the
safety--alert symbol.

DC Inverter Series for R410A Unitary Split Air Conditioner
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Electrical shock hazard:
Failure to follow this warning could result in personal injury or death.
Before installing, modifying, or servicing system, the main electrical disconnect
switch must be in the OFF position. There may be more than 1 disconnect switch.
Lock out and tag switch with a suitable warning label.
(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.
(1) Please instal
l 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.
(4) The appliance shall be installed in accordance with national wiring regulations.
(5) The fixed wires connecting to the appliance must be configured with a
disconnect sized per local and national regulations.
(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 not adequate,provide
alternatives to prevent the pipe from physical damage.

DC Inverter Series for R410A Unitary Split Air Conditioner
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(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 the airconditioner. Insecure installation may cause the air conditioner to
tip over and lead to injury.
(10) Be sure to use a dedicated power circuit. Ifthe power cord is damaged, it
must be repaired by a licensed HVAC professional or electrician.
(11) The air conditioner can be cleaned o
nly 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 drythe filter with bare flame or an air blower; the filter could become
warped or damaged.
(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.
(1) Do not put a finger or other objects into the air inlet or return air grill.
(2) Please adopt safety protection measures before touching the refrigerant pipe;
otherwise you could hurt your hands.
(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.

DC Inverter Series for R410A Unitary Split Air Conditioner
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(6) 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 welds may become
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.
(1) If thermostat is to be used, it should be connected first before powering up the
unit, otherwise the thermostat may not work.
(2) Only use soft dry cloth or slightly wet cloth with neutral detergent to clean the
casing of the air conditioner.
(3) 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 Series for R410A Unitary Split Air Conditioner
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2 Product Introduction
2.1 Operating Range
—
Cooling
Heating
Outdoor
temperature
5°F(-15°C)~129.2°F (54°C) -22°F (-30°C)~75.2°F (24°C)
2.2 Standard Accessories
Outdoor unit accessories
No.
Name
Appearance
Q'ty
Usage
1 Drain plug 3 To plug the unused drain
hole
2 Drainage
connecter
or 1 To connect with the hard
PVC drain pipe
2.3 Optional Accessories
Outdoor unit accessories
No.
Name
Appearance
Q'ty
Usage
1 Adapter
pipe 1
Connect the
unit with the
liquid pipe
2 Adapter
pipe 1
Connect the
unit with the
gas pipe
3 Installation
3.1 Installation Preparation
3.1.1 Selection of Installation Location
①. The unit must be installed properly supported to withstand the weight of the
unit and fixed securely,otherwise the unit would topple or fall off.
②. Install the air conditioner ata place where the inclination is less than 5°.
③. Avoid installing the unitin direct sunlight to improve efficiency.
④. Do not install where there is the danger ofcombustible gasleakage.
⑤. Do not install the unitat a place with leakage of flammable gas.

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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 alocation that is safe and away from animals and plants. If not, please
add safety fences to protect the unit.
(3) Install at aplace 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, oilsmoke or
corrosive gas.
(6) Keep it away from strong windsthat might affect the outdoor fan and lead
to insufficient airflow volume and affect the unit’s performance.
(7) Away from any object that may create vibration or noise.
(8) Install the outdoor unit ata place where condensate can be easily drained.
3.1.2 Unit Dimension
FLEXX36HP230V1AO

DC Inverter Series for R410A Unitary Split Air Conditioner
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Unit: inch(mm)
Dimensions
Model
A B C D E G
FLEXX36HP230V1AO 37
(940)
20-7/8
(530)
32-1/4
(820)
24
(610)
19-1/8
(486)
18-1/8
(460)
FLEXX60HP230V1AO
Unit: inch(mm)
Dimensions
Model
A B C D E G
FLEXX60HP230V1AO 42-3/4
(1085)
16-7/8
(427)
53-3/4
(1365)
24-1/2
(620)
15-1/2
(395)
14-1/2
(370)
3.1.3 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).

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1) When one outdoor unit is to be installed.
A~E HbHdH (in)
a
b
c
d
e
B
—
-
≥ 4
-
-
-
A,B,C,
—
≥ 12 ≥ 4≥ 4
-
-
B,E
—
-
≥ 4
-
-
≥ 40
A,B,C,E
—
≥ 12 ≥ 6≥ 6
-
≥ 40
D
—
-
-
-
≥ 40
-
D,E
—
-
-
-
≥ 40 ≥ 40
B,D
Hb＜HdHd＞H
-
≥ 4
-
≥ 40
-
Hb＞HdHd＜H - ≥ 4- ≥ 40 -
B,D,E
Hb＜Hd
Hb≤1/2H
-
≥ 10
-
≥ 80 ≥ 40
1/2H＜Hb≤H
- ≥ 10 - ≥ 80 ≥ 40
Hb＞H Prohibited
Hb＞Hd
Hd≤1/2H
-
≥ 4
-
≥ 80 ≥ 40
1/2H＜Hd≤H
- ≥ 8- ≥ 80 ≥ 40
Hd＞H
Prohibited

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2) When two or more outdoor units are to be installed side by side.
Unit: in
A~E HbHdH (in)
a
b
c
d
e
A,B,C — ≥ 12 ≥ 12 ≥ 40 - -
A,B,C,E — ≥ 12 ≥ 12 ≥ 40 - ≥ 40
D — - - - ≥ 80 -
D,E
—
-
-
-
≥ 80 ≥ 40
B,D
Hb＜HdHd＞H - ≥ 12 - ≥ 80 -
Hb＞Hd
Hd ≤ 1/2H
-
≥ 10
-
≥ 80
-
1/2H＜Hd ≤ H - ≥ 12 - ≥ 100 -
B,D,E
Hb＜Hd
Hb ≤ 1/2H - ≥ 12 - ≥ 80 ≥ 40
1/2H＜Hb≤H - ≥ 12 - ≥ 100 ≥ 40
Hb＞H Prohibited
Hb＞Hd
Hd ≤ 1/2H
-
≥ 10
-
≥ 100 ≥ 40
1/2H＜Hd ≤ H - ≥ 12 - ≥ 100 ≥ 40
Hd＞H Prohibited

DC Inverter Series for R410A Unitary Split Air Conditioner
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3) When outdoor units are installed in rows.
Unit: in
Hb H
(in)
Hb ≤ 1/2H
b ≥ 10
1/2H＜Hb ≤ H b ≥ 12
Hb＞H Prohibited
4) When outdoor units are installed one above another.
Unit: in

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3.2 Unit Installation
3.2.1 Outdoor Unit Installation
(1) If the outdoor unit is installed on a solid ground such as concrete, use M10
screw bolts and nuts to secure the unit and make sure the unit stands erect
and level.
(2) Do not install it on top of the building.
(3) If it vibrates and causes noise, please add rubber cushion between the
outdoor unit and the installation base.
(4) When the outdoor unit is in heating or defrosting, it needs to drain water.
When installing the drain pipe, plug the accompanied drainage connector to
the drainage hole on the chassis of the outdoor unit. Then connect a drain
hose to the drainage connector (If drainage connector is used, the outdoor
unit should be at least 10cm from the installation ground. See the following
figures).
(5) Plugs and drainage connector are not recommended if there is an
electrical heater on the chassis.
3.2.2 Connection Pipe Installation
3.2.2.1 Installation Notice and Requirement on Connection Pipe

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Installation method: Connect the connection pipes first to the unit. When
bending a connection pipe, be careful not to damage the pipe. Do not over-
tighten the flare nut, otherwise leakage will occur. And, the outside of connection
pipe should be insulated to protect it from mechanical damage during
installation, maintenance and transportation.
Item
Model
Size of fitting pipe(inch)
Maximum
pipe
length
feet(m)
Biggest drop between
indoor and outdoor
units
feet(m)
Liquid pipe Gas pipe
Φ3/8 Φ3/4 98 (30) 49 (15)
Connection pipe should adopt water-proof insulating material. Its wall thickness
should be 0.5-1.0mm and the pipe wall should be able to withstand 6.0MPa. The
longer the connection pipe is the worse cooling and heating performance it has.
3.2.2.2 Pipe Flaring
(1) Cut the connection pipe with a pipe cutter.
(2) The mouth of connection pipe should face downward. Remove burrs with
the cut surface so that the chips do not enter the pipe.
(3) Remove the cut-off valve of outdoor unit and take out the flare nut from the
bag of indoor unit accessories. Then fit the flare nut on the pipe and use a
flaring tool to flare the mouth of connection pipe.
(4) Check whether the flaring part has cracked. (See the figure below).
FLEXX36HP230V1AO
FLEXX60HP230V1AO

DC Inverter Series for R410A Unitary Split Air Conditioner
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3.2.2.3 Pipe Bending
(1) The pipes are shaped by your hands. Be careful not to collapse them.
(2) Do not bend the pipes in an angle more than 90°.
(3) If the pipe is repeatedly bent or extended, it will become hard and difficult to
be bent or extended. So do not bend or extend the pipe for more than 3
times.
(4) When bending the pipe, do not bend it
excessively, otherwise it will get
broken. As shown beside, use a sharp
cutter to cut the heat insulating pipe
and bend it after the pipe is exposed.
After bending, place the heat
insulating pipe b
ack on the pipeline
and fix it with adhesive tape.
3.2.2.4 Connection Pipe Of The Units
①
.Connect the pipe to the unit. Please follow the instructions stated in the figures
below. Use both spanner and torque wrench.
②.When connecting the tapered screw nut, first apply chilled machine oil on its
inner and outer surface and then screw it up for 3~4 circles.
③.Confirm the tightening torque by referring to the following table (If the screw
nut is over-twisted, it may be damaged and cause leakage).
④.Check whether gas leakage occurs to the connection pipe and then apply
thermal insulation, as shown below.
⑤.Wind sponge around the joint of gas pipe and heat insulation sheath of gas
collecting pipe.
⑥.Be sure to connect gas pipe after liquid pipe is connected.

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3.2.2.4.1 Brazed Connection
Screw on the flare nut of the flaring connecting pipe on the outdoor unit valve.
3.2.2.4.2 Flare Connection
Pipe diameter (inch)
Tightening torque (N·m)
Ф1/4
15-30
Ф3/8
35-40
Ф1/2
45-50
Ф5/8
60-65
Ф3/4
70-75
Ф7/8
80-85
3.2.2.5 Sealing of the Knock-off Hole
As for the built-in valve model, during the installation process for connection
pipe, when the connection pipe is passing through the knock-off hole, conduct
sealing with insulated cotton in the knock-off hole of outdoor unit to prevent small
animals from entering. See the following figures.

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3.2.3 Connection Pipe Vacuum Pumping and Leak Detection
3.2.3.1 Vacuum Pumping
①Make sure the outlet of vacuum pump is away from fire source and is
well-ventilated.
②Before vacuum pumping, make sure the unit cut-off valves are closed.
③When vacuum pumping, both the liquid pipe and the gas pipe must be
pumped.
(1) Remove the caps of the liquid valve, gas valve and also the service port.
(2) Connect the hoses at the low pressure and high pressure sides of the
manifold valve assembly to the service ports of the unit’s gas valve and
liquid valve, and meanwhile the gas and liquid valves should be kept closed
in case of refrigerant leak.
(3) Connect the hose used for evacuation to the vacuum pump.
(4) Open the switch at the lower pressure side of the manifold valve assembly
and start the vacuum pump. Meanwhile, the switch at the high pressure side
of the manifold valve assembly should be kept closed, otherwise evacuation
would fail.
(5) The evacuation duration depends on the unit’s capacity, generally.
Model Time(min)
30
45
And verify if the pressure gauge at the low pressure side of the manifold valve
assembly reads -0.1MPa, if not, it indicates there is leak somewhere. Then, close
the switch fully and then stop the vacuum pump.
(6) Wait for 10min to see if the system pressure can remain unchanged. During
this time, the reading of the pressure gauge at the low pressure side can not
be larger than 0.005MPa.
(7) Slightly open the liquid valve and let some refrigerant go to the connection
pipe to balance the pressure inside and outside of the connection pipe, so
that air will not come into the connection pipe when removing the hose.
FLEXX36HP230V1AO
FLEXX60HP230V1AO