Gree U match UMAT18HP230V1AD User manual

S IM CONCEA ED DUCT UNIT
OWNER’S MANUA
Models:
UMAT18HP230V1AD
UMAT24HP230V1AD
UMAT30HP230V1AD
UMAT36HP230V1AD
UMAT42HP230V1AD
UMAT48HP230V1AD

Table of Contents
ntroduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
System Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
System Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7-9
Operating nstructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-22
Care and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Troubleshooting & Diagnostic Codes . . . . . . . . . . . . . . . . . . . . . . . 24
Energy Saving Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Back
Thank you for choosing a
Slim Concealed Duct
Air Conditioning & Heating System!
You can feel confident in your selection because the same pride in craftsmanship
and engineering knowledge that goes into millions of other Gree installed
products worldwide has gone into your unit.
Please read this owner’s manual carefully before operation and retain it for
future reference.

Superior Design for Superior Performance
Compact and powerful, this Gree U‐Match Slim Concealed Duct indoor unit offers the ultimate
in flexibility and discretion. t is designed to be concealed above suspended ceilings or within
open closet spaces to deliver conditioned air via ducting and suitable ceiling or wall grilles.
This arrangement provides immense flexibility, in terms of both the distribution of conditioned
air and the type of grille or diffuser that best complements any room’s styling. Your unit is easily
operated from the wall‐mounted wired Tether Controller.
Like all Gree systems, this unit provides quiet comfort and energy efficient heating and cooling.
For many residential and light commercial applications, it is the ideal solution to balance comfort,
efficiency and ease of use.
The Slim Concealed Duct unit works in conjunction with the U‐Match outdoor compressor
section, featuring Gree’s exclusive G‐10 nverter technology. The nverter constantly adjusts
compressor speed to save energy, reduce outdoor noise and maintain a steady room
temperature, by eliminating the harsh starts and stops of conventional systems.
Thank you for selecting this Gree air conditioner. Before operating your unit,
please read this manual carefully and retain it for further reference.
INTRODUCTION
2

Indoor unit
Outdoor unit
3
NOMENC ATURE
UMAT 18 1 A D
Series Designation
UMAT – U-Match Series
Product Type
S- System
O - Outdoor Units
H- Indoor High Wall
D - Indoor Duct
C - Indoor Cassette
F - Indoor Floor/Ceiling
Revision Level
Style/Color Designation
Electrical Rating
230V - 208/230V60Hz 1PH
115V- 115V 60Hz 1PH
HP 230V
Cooling Capacity
18 - 18,000 BtuH
24 - 24,000 BtuH
30 - 30,000 BtuH
36 - 36,000 BtuH
42 - 42,000 BtuH
48 - 48,000 BtuH
Model Type
AC - Cooling Only
HP - Heat Pump
HC - Heat/Cool
Example: UMAT18HP 30V1AD
UMAT 18 1 A O
Series Designation
UMAT – U-Match Series
Product Type
S - System
O - Outdoor Units
H - Indoor High Wall
D - Indoor Duct
C - Indoor Cassette
F - Indoor Floor/Ceiling
Revision Level
Style/Color Designation
Electrical Rating
230V - 208/230V 60Hz 1PH
115V - 115V 60Hz 1PH
HP 230V
Cooling Capacity
18 - 18,000 BtuH
24 - 24,000 BtuH
30 - 30,000 BtuH
36 - 36,000 BtuH
42 - 42,000 BtuH
48 - 48,000 BtuH
Model Type
AC - Cooling Only
HP - Heat Pump
HC - Heat/Cool
Example: UMAT18HP 30V1AO

WARNING
4
SAFETY PRECAUTIONS
Please read the following before operation.
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, and CAUTION. These
words are used with the safety-alert symbol.
DANGER identifies the most serious hazards which will result in severe personal injury
or death.
WARNING signifies hazards which could result in personal injury or death.
CAUTION is used to identify unsafe practices which may result in minor personal
injury or product and property damage.
NOTE is used to highlight suggestions which will result in enhanced installation,
reliability, or operation.
NOTE: Your actual air conditioning & heating system and related devices may differ
from the images shown in this manual.
Heat pumps, air conditioners & heating equipment should be installed, started up, and
serviced only by qualified installers and service technicians. Air conditioning, heat pumps
and refrigeration systems are hazardous due to high voltage electrical components,
high refrigerant pressures, and moving parts.

WARNING
5
SAFETY PRECAUTIONS
Please read the following before operation.
• Disconnect electrical power to the indoor and outdoor units before performing any
maintenance or cleaning.
• Do not attempt to repair the
Gree system yourself. ncorrect repairs may cause
electric shock or fire. Contact a qualified service technician for all service requirements.
• Keep combustible materials away from the unit.
• Do not put hands or any objects into the air inlets or outlets. This may cause personal
injury or damage the unit.
• When cleaning, be careful not to splash water on the unit. Doing this may cause
electric shock or damage to unit.
CAUTION

6
System Schematic
Indoor Unit
System Components*
1. ndoor Power Supply
2. Electric Box
3. Communication Cable
4. Wired Tether Controller
5. Communication Cable
6. Front Panel
7. Service Cover
8. Liquid Pipe
9. Gas Pipe
10. Drain Hose
11. Outdoor Power Supply
Outdoor Unit
3
1
Air outlet
Air outlet
Air inlet
Air inlet
2
10 9 87 11 6
4
5
*
Not all items included in
equipment purchase

SYSTEM FUNCTIONS
WHISPER QUIET
Not only are the Gree systems energy efficient but they are quiet too. Slim Concealed Duct
operates with sound levels starting as low as 28 dB(A).
MU TI FAN SPEEDS
Whether operating in either Cooling or Heating mode, the indoor fan can be set to your choice
of three different speeds (Low, Medium or High) to achieve maximum comfort.
BUI T IN CONDENSATE IFT PUMP
The indoor unit features a built-in drain pump that pumps condensate from the basepan to the
drain system.
CONDENSATE SENTRY
The unit’s fail-safe mechanism recognizes when there is a high level in the condensate pan and
shuts off the system to prevent overflow.
INTE IGENT PRE-HEATING
The U-Match system guards against the annoying cool air blown into the room in heating mode.
The system constantly monitors the discharge air temperature. t will delay the indoor fan until
the indoor coil has warmed up to prevent blowing uncomfortable cool air into the room.
TETHER CONTRO ER
The Gree wired Tether Controller mounts to the wall up to 25 feet from the unit. t provides
complete control over your unit’s operation mode, desired temperature, fan speed, airflow
direction and more.
INTE IGENT DEFROST
The U-Match ntelligent Defrost function increases room comfort and saves energy by eliminating
unnecessary defrost cycles. n heating mode, the unit will monitor the outdoor coil for frost
buildup. Once frost buildup has been detected, the system will switch into a defrost mode to
remove the frost.
n defrost mode the wired Tether Controller display will show "H1" and the indoor fan and
outdoor fan will turn off while the system removes frost from the outdoor coil. Once the frost
has been removed, the wired Tether Controller display shows room set point and the system
will revert back to normal heating operation.
7

8
SYSTEM FUNCTIONS
POWER FAI URE MODES
Power interruptions are no problem for the U-Match system. User selections and system
parameters are stored in non-volatile memory. These parameters are retained during a power
failure. When power is returned, the slim duct system will automatically return to the last
operating mode. Or, the system can be set to power up in standby mode.
TURBO MODE
Use Turbo Mode for situations when you wish to achieve the desired room temperature in the
shortest possible time. This mode runs the unit at ultra high speeds for quickest results.
C OCK
Using the 24-hour clock feature, you can control each function in real time, for the most user-
friendly operation.
MODE BUTTON
The unit can be set to five different operating modes: HEAT, COOL, DRY, FAN ONLY and AUTO.
NOTE: AUTO MODE has fixed setpoints of 68° F heating and 77° F cooling, which are
not adjustable. The system will automatically select heating or cooling to maintain room
temperature within this band.
DRY MODE
Select this mode to increase moisture removal during warm humid conditions. n Dry mode
the indoor fan will run at low speed during the cooling cycle. When setpoint is reached, the
indoor fan will turn off with the compressor.
TIMER MODE
The unit can be programmed to turn ON or OFF after a specific amount of time. The time period
is adjustable between one half and 24 hours.
S EEP MODE
The unit will automatically adjust room temperature during your sleep time. This slight change in
temperature will not affect your comfort level due to the natural effects that sleeping has on the
body, but it will save on energy consumption and will lower electric bills.
X-FAN MODE
When operating in humid areas, U-Match has a Dry Coil function called X-Fan that will allow the
indoor fan to run for a pre-determined amount of time after the unit is turned off (cooling or dry
modes) to ensure that additional moisture is removed from coil.

SYSTEM FUNCTIONS
FAHRENHEIT °F / CE SIUS °C
The wired Tether Controller can be set to display in either °F or °C.
SE F-DIAGNOSIS
With an on-board computer using real-time diagnostics, the Gree U-Match system helps to
prolong its own life. The automatic diagnosis feature continuously scans for unacceptable
operating conditions or malfunctions. f such conditions occur, the system takes corrective action
or stops. Error codes are shown on the unit display to facilitate easy troubleshooting and repair.
PRIVACY OCK MODE
The wired Tether Controller has a Privacy Lock. The Privacy Lock averts unauthorized access or
tampering with system settings.
AGENCY ISTINGS
All systems are listed with AHR (Air conditioning, Heating, and Refrigeration nstitute) and are
ETL certified per UL Standards.
INTRODUCTION TO THE TETHER CONTRO ER
9
X-FAN

10
OPERATING INSTRUCTIONS
ON/OFF BUTTON
Press On/Off to turn On the unit. Press again to turn it Off.
MODE SETTING
When the unit is ON, press Mode button to select an operating mode. t will change
sequentially as shown below: Auto–Cool–Dry–Fan–Heat
“Off” State “On” State
Auto Cool Dry Fan Heat
F
F
F
TEMPERATURE SETTING
Press ▲or ▼to increase/decrease the setpoint temperature as shown below. n Cool, Dry,
Fan or Heat mode, the setpoint temperature range is 61°-86°F. n Auto mode, the setpoint
temperature is not adjustable.
F

OPERATING INSTRUCTIONS
FAN SETTING
When the unit is ON, press Fan button to select the fan speed of the indoor unit.
t will change sequentially as shown below.
11
Auto Low Medium High
F
TURBO MODE
Turbo mode will force the unit up to maximum capacity to heat or cool the room in the shortest
amount of time. Turbo Mode can only be used on Heat or Cool modes.
Turbo Setting
Press Function button until the Turbo icon is displayed. Then press Enter/Cancel to confirm. To
cancel, press the Function button to re-enter the Turbo setting status, then press Enter/Cancel.
F
F
F
Turn On the unit and select Heat or Cool mode. Press Enter/Cancel to start Turbo mode.
To cancel, press Function button to re-enter
the Turbo settings, then press Enter/Cancel button.
Press Function until Turbo mode con is displayed.
Cancel Turbo Mode
F

12
OPERATING INSTRUCTIONS
TIMER SETTING
The U-Match System has two timer modes. The Timer-On mode will turn the unit ON after
the preset time period. The Timer-Off Mode will turn the unit OFF after the preset time period.
The preset time period can be from 0.5 to 24 hours in 0.5 hour increments.
Timer-On Setting
Turn the unit Off, press the Timer button. The OFF icon will flash and the hours will be displayed.
Set the time period for the unit to remain OFF before turning ON by pressing the ▲or ▼
buttons. Press Timer button to confirm and start Timer-On mode.
F F F
FF
Turn Off the unit. Press Timer button to select Timer On mode.
Press ▲or▼to select time period.
Timer modes can be cancelled anytime
by pressing the Timer button.
Cancel Timer
F
Press Enter/Cancel to start timer mode.

13
OPERATING INSTRUCTIONS
Timer-Off Setting
Turn the unit On, press the Timer button. The ON icon will flash and the hours will be displayed.
Set the time period for the unit to remain ON before turning OFF by pressing the ▲or ▼
buttons. Press Timer button to confirm and start Timer-Off mode.
F F F
FF
Turn On the unit and select Heat
or Cool mode.
Press Timer button to select Timer Off mode.
Press ▲or▼to select time period.
Timer modes can be cancelled anytime
by pressing the Timer button.
Cancel Timer
F
Press Enter/Cancel to start timer mode.

S EEP MODE
The unit will automatically adjust room temperature during your sleep time. This slight change
in temperature will not affect your comfort level due to the natural effects that sleeping has
on the body, but it will save on energy consumption and will lower your electric bill. Press the
SLEEP button to select Sleep Mode. The SLEEP icon will appear.
In Cool or Dry modes:
f setpoint is between 61℉to 73℉, temperature will slowly increase 2℉per hour for 3 hours,
then maintain this setpoint for 4 hours, then reduce setpoint by 2℉and hold at this setpoint
until Sleep Mode is cancelled.
f setpoint is between 74℉to 81℉, temperature will slowly increase 2℉per hour for 2 hours,
then maintain this setpoint for 5 hours, then reduce setpoint by 2℉and hold at this setpoint
until Sleep Mode is cancelled.
f setpoint is between 82℉to 85℉, temperature will slowly increase 2℉ per hour for 1 hour,
then maintain this setpoint for 6 hours, then reduce setpoint by 2℉and hold at this setpoint
until Sleep Mode is cancelled.
f setpoint is 86℉, unit will run at this setpoint for 7 hours, then reduce setpoint by 2℉and
hold at this setpoint until Sleep Mode is cancelled.
In Heat mode:
f setpoint is between 82 ℉to 86℉, the unit will slowly reduce setpoint by 2℉per hour for
3 hours, and then maintain this setpoint until Sleep Mode is cancelled.
f setpoint is between 69 ℉to 81℉, the unit will slowly reduce setpoint by 2℉per hour for
2 hours, and then maintain this setpoint until Sleep Mode is cancelled.
f setpoint is between 63℉to 68℉, the unit will reduce setpoint by 2℉, and then maintain
this setpoint until Sleep Mode is cancelled.
f setpoint is 62℉, the unit will run at this setpoint until Sleep Mode is cancelled.
14
Cooling Mode Heating Mode
OPERATING INSTRUCTIONS

15
OPERATING INSTRUCTIONS
Sleep Setting
Turn the unit On and select a mode (ex. Heat, Cool, or Dry). Press the Function button until
the Sleep icon appears on the display. Press the Enter/Cancel button to start Sleep Mode.
F
FF
F
Turn On the unit and select a mode. Press Function until the Sleep icon is displayed. Press Enter/Cancel to start Sleep Mode.
Cancel Sleep Mode
Press Function until the Sleep icon appears.
Press the Enter/Cancel button to cancel Sleep Mode.

FFF
16
OPERATING INSTRUCTIONS
X-FAN MODE
The X-Fan function may only be selected in Cool and Dry modes. After the unit is turned Off,
the X-Fan function will keep the indoor fan running for 2 minutes to dry the indoor evaporator
coil to help avoid mold and mildew growth.
X-Fan Settings
Turn the unit On and select Cool or Dry mode. Press Function button until X-fan icon is
displayed and then press Enter/Cancel to activate this function.
F
Turn On the unit, select Cooling
or Dry mode.
Press Function until the X-fan icon is displayed. Press Enter/Cancel to start X-fan
mode.
Cancel X-Fan Mode
To cancel, press Function button to re-enter the
X-Fan settings, then press Enter/Cancel button.

OPERATING INSTRUCTIONS
I-FEE MODE
The indoor unit will sense room temperature at the wired Tether Controller instead of at the
return air section of the indoor unit.
I-Feel Settings
Press the Function button until the -Feel icon is displayed, then press Enter/Cancel to
activate the function.
17
F
Turn Unit On. Press Function until the -Feel icon is displayed. Press Enter/Cancel to start -Feel
mode.
To cancel, press Function button to re-enter the
-Feel settings, then press Enter/Cancel button.
Cancel I-Feel Mode
Indoor Unit Room Sensor A
Tether Controller Indoor Room Sensor B

OPERATING INSTRUCTIONS
FREEZE GUARD MODE
The unit will automatically maintain the room temperature above 46º F. This setpoint
temperature is not adjustable. Freeze Guard Mode can only be selected with the unit in Heat
Mode. Fan speed selection will be not be allowed; the unit will automatically select the proper
fan speed for the room conditions.
Freeze Guard Setting
n Heat mode, press Function until the Freeze Guard icon is displayed. Press Enter/Cancel
button to activate.
To deactivate, press Function to select“Freeze Guard” setting status. Then press Enter/Cancel until
the flashing “Freeze Guard”symbol disappears.
18
FF
Cancel Freeze Guard Mode
To cancel, press Function button to re-enter the
Freeze Guard settings, then press Enter/Cancel button.
Turn Unit On and select Heat Mode. Press Function until the
Freeze Guard icon is displayed.
Press Enter/Cancel to start Freeze Guard mode.

Setup and Configuration Modes
INDOOR FAN MODE
The unit has two selectable indoor fan operating modes:
Mode 0 (Factory default setting): The indoor fan will run continuously, except in heat mode,
where the indoor fan will continue to run for 60 seconds after room temperature reaches setpoint.
Mode 1: The indoor fan will turn Off 10 seconds after the room temperature reaches
setpoint, regardless of the mode.
Indoor Fan Mode Setting
Turn the unit Off, Press the Function and Timer buttons simultaneously for 5 seconds until 00
is displayed on the temperature display. Press Mode button until 05 is displayed. Then press
▲and ▼buttons to select the desired indoor fan mode ( ‘00' for Mode 0 or '01' for Mode 1).
Press Enter/Cancel button to activate.
OPERATING INSTRUCTIONS
19
F
F
Cancel Indoor Fan Mode
To cancel, press Enter/Cancel button
and quit from the interface.
Turn Unit Off. Simultaneously, press Function and Timer
buttons for 5 sec until '00' is displayed.
Press ▲or ▼button to select
an indoor fan mode.
Press Enter/Cancel to activate.
Press Mode button until “05” is shown
on the temperature display area.
F