Gree UMatch UMAT18HP230V1AO User manual

CEILI G CASSETTE
OW ER’S MA UAL
Models:
Indoor Unit Outdoor Unit
UMAT18 P230V1AC UMAT18 P230V1AO
UMAT24 P230V1AC UMAT24 P230V1AO
UMAT30 P230V1AC UMAT30 P230V1AO
UMAT36 P230V1AC UMAT36 P230V1AO
UMAT42 P230V1AC UMAT42 P230V1AO
UMAT48 P230V1AC UMAT48 P230V1AO

Table of Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Nomenclature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
System Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
System Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6-8
Wireless Remote Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9-14
Care and Cleaning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15-16
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17-18
Diagnostic Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19-20
Energy Saving Tips . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Back
Thank you for choosing a
Ceiling Cassette
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
Gree’s discreet U-Match Ceiling Cassette provides low-noise performance through
design and innovation. The Ceiling Cassette is a one-stop solution for heating and air
conditioning large and small rooms. This flexible climate solution conveniently disappears
above the surface of any room’s drop ceiling. Features include a highly effective inverter
driven variable speed compressor, 4-way air discharge, multi speed fan, swing louver
and a cleanable air filter.
Gree’s cutting edge fan technology is quiet and powerful. It efficiently circulates the
conditioned air throughout the space while safely removing water via the internal
condensate drain pump.
Flexibility and innovation make the Ceiling Cassette the best choice for creating ideal
climate conditions.
I TRODUCTIO
2

Indoor unit
Outdoor unit
3
OME CLATURE
Example: UMAT18HP230V1AC
Example: UMAT18HP230V1AO

• Disconnect electrical power to the indoor and outdoor units before performing any
maintenance or cleaning.
• Do not attempt to repair the Gree system yourself. Incorrect 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.
• In the event of a failure (burning smell, etc.), immediately disconnect all electrical power
to indoor and outdoor units.
SAFETY PRECAUTIO S
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: DA GER, WAR I G, and CAUTIO . These words are used with the
safety-alert symbol.
DA GER identifies the most serious hazards which will result in severe personal injury or death.
WAR I G signifies hazards which could result in personal injury or death.
CAUTIO is used to identify unsafe practices which may result in minor personal injury or
product and property damage.
OTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.
OTE: Your actual air conditioning & heating system and related devices may differ from
the images shown in this manual.
This appliance is not intended for use by children without responsible adult supervision.
Proper care should be taken to ensure safety.
eat 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
WARNING
WARNING
CAUTION
4

SYSTEM SCHEMATIC
Indoor unit
System Components*
1. Indoor Power Supply
2. Drain Pipe
3. Communication Cable
4. Decorative Discharge Air
Grille (sold separately)
5. Refrigeration Pipes
6. Wired Tether Controller
(sold separately)
7. Remote Controller
8. Service Cover
9. Communication Cable
10. Front Panel
11. Outdoor Power Supply
12. Liquid Pipe
13. Gas Pipe
14. Drain ose
Outdoor Unit
Air outlet
Air inlet
1
2
5
4
3
67
Air outlet
Air inlet
14 12 1110
The refrigerant pipe, drain pipe and electrical wiring for this unit should
be installed by a qualified VAC professional only.
CAUTION
98
13
5
* Not all items included in
equipment purchase

SYSTEM FU CTIO S
WHISPER QUIET
Not only are the Gree systems energy efficient but they are quiet too. Ceiling Cassette operates
with sound levels starting as low as 37 dB(A).
MULTI FA SPEEDS
Whether operating in either Cooling or eating mode, the indoor fan can be set to your choice
of three different speeds (Low, Medium or igh) to achieve maximum comfort.
BUILT I CO DE SATE LIFT PUMP
The unit features a built-in drain pump that lifts condensate up to 39 inches above the drain
pan to a gravity condensate drain system. In most cases, the internal condensate lift mechanism
will avoid the need for an external condensate pump.
CO DE SATE SE TRY
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.
I TELLIGE T PRE-HEATI G
U-Match Systems guards against the annoying cool air blown into the room in heating mode.
The system constantly monitors the discharge air temperature. It will delay the indoor fan until
the indoor coil has warmed up to prevent blowing uncomfortable cool air into the room.
CO TROLLERS
The Ceiling Cassette unit comes with a factory supplied Wireless Remote Controller. An optional
Wired Tether Controller is sold separately.
OTE: The controllers are mutually exclusive. They cannot be used at the same time.
WIRELESS REMOTE
The Gree multi-functional infrared hand held wireless controller is sleek,
ergonomically designed, easy to use and has a large LCD display (no back light).
TETHER CO TROLLER
The Gree wired Tether Controller mounts to the wall up to 25 feet from the unit.
It provides complete control over your unit’s operation mode, desired temperature,
fan speed, airflow direction and more. (Sold Separately)
6

SYSTEM FU CTIO S
I TELLIGE T DEFROST
The Intelligent Defrost function increases room comfort and saves energy by eliminating
unnecessary defrost cycles. In 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.
I FEEL MODE
The unit will sense room temperature at the remote controller instead of at the indoor unit.
It then adjusts airflow and temperature accordingly for the ultimate in personal comfort
control and energy savings. This function is only available with the wired Tether Controller.
(Sold Separately)
SWI G LOUVER
The adjustable swing louvers can be controlled from the wireless controller. Vertical swing
louvers allows five different air discharge directions including Continuous Sweep. Maximize
comfort by adjusting the direction of airflow in the room by moving the louvers up or down.
FRESH AIR I TAKE
The
Ceiling Cassette has a ventilation air knockout that allows a 4-inch flex duct connection and
a field-supplied duct booster fan. The maximum fresh air allowed is 20% of the unit's high-speed
fan airflow rating.
POWER FAILURE MODE
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 Ceiling Cassette system will automatically return to the last operating mode.
TURBO MODE
Use Turbo Mode for situations where 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.
CLOCK
The wireless remote controller has a built-in clock feature. The remote will display the time of
day in a 24-hour format.
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.
7

SYSTEM FU CTIO S
MODE BUTTO
The unit can be set to five different operating modes: EAT, COOL, DRY, FAN ONLY and AUTO.
OTE: 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.
SLEEP 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-FA MODE
When operating in humid areas, the X-fan or Dry Coil function allows 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.
FAHRE HEIT °F / CELSIUS °C
The remote controller can be set to display in either °F or °C.
SELF-DIAG OSIS
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. If 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 LOCK MODE
The wireless remote controller has a Privacy Lock. The Privacy Lock averts unauthorized access
or tampering with system settings.
AGE CY LISTI GS
All systems are listed with A RI (Air conditioning, eating, and Refrigeration Institute) and are
ETL certified per UL Standards.
8

Remote Controller
I TRODUCTIO FOR ICO S O DISPLAY SCREE
OPERATIO OF WIRELESS REMOTE CO TROLLER
Part ame
1 Signal Transmitter
2 ON/OFF Button
3 Mode Button
4 – Button
5 + Button
6 Fan Button
7 Swing Button
8 Clock Button
9 Timer ON Button
10 X-Fan Button
11 Temp Button
12 Timer OFF Button
13 Turbo Button
14 Sleep Button
15 Light Button
1
2
4
6
8
10
13
3
5
7
9
11
14
12
15
Auto Mode
Cool Mode
Dry Mode
Fan Mode
eat Mode
Clock
Sleep Mode
Set Fan Speed
Operation Mode
X-Fan Mode
Set Temperature
Set Time
Timer On
Privacy Lock
Up & Down Swing
Light
Set Temp. Indoor
Ambient Temp.
Outdoor
Ambient Temp.
Temp. Display Type
Turbo Mode
9