SLIM CONCEALED DUCT UNIT OWNER’S MANUAL Models: UMAT18HP230V1AD UMAT24HP230V1AD UMAT30HP230V1AD UMAT36HP230V1AD UMAT42HP230V1AD UMAT48HP230V1AD
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. Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Nomenclature . .
INTRODUCTION Superior Design for Superior Performance Compact and powerful, this Gree U‐Match Slim Concealed Duct indoor unit offers the ultimate in flexibility and discretion. It 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.
NOMENCLATURE Indoor unit Example: UMAT18HP230V1AD UMAT 18 HP 230V 1 A D Series Designation Product Type S - System O - Outdoor Units H - Indoor High Wall D - Indoor Duct C - Indoor Cassette F - Indoor Floor/Ceiling UMAT – U-Match Series 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 Revision Level Style/Color Designation Model Type AC - Cooling Only HP - Heat Pump HC - Heat/Cool Electrical Rating 230V - 208/230V 60Hz 1PH 115V -
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.
SAFETY PRECAUTIONS Please read the following before operation. WARNING • 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. CAUTION • Do not put hands or any objects into the air inlets or outlets.
System Schematic Indoor Unit 1 Air outlet Air inlet 2 System Components* 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11.
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). MULTI 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. BUILT IN CONDENSATE LIFT PUMP The indoor unit features a built-in drain pump that pumps condensate from the basepan to the drain system.
SYSTEM FUNCTIONS POWER FAILURE 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.
SYSTEM FUNCTIONS FAHRENHEIT °F / CELSIUS °C The wired Tether Controller can be set to display in either °F or °C. SELF-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. 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.
OPERATING INSTRUCTIONS ON/OFF BUTTON Press On/Off to turn On the unit. Press again to turn it Off. F F “Off” State “On” State MODE SETTING When the unit is ON, press Mode button to select an operating mode. It will change sequentially as shown below: Auto–Cool–Dry–Fan–Heat Auto Cool Dry Fan Heat F TEMPERATURE SETTING Press ▲ or ▼ to increase/decrease the setpoint temperature as shown below. In Cool, Dry, Fan or Heat mode, the setpoint temperature range is 61°-86°F.
OPERATING INSTRUCTIONS FAN SETTING When the unit is ON, press Fan button to select the fan speed of the indoor unit. It will change sequentially as shown below. 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.
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.
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 Turn On the unit and select Heat or Cool mode. F Press Timer button to select Timer Off mode. F F Press ▲or▼ to select time period. F Press Enter/Cancel to start timer mode.
OPERATING INSTRUCTIONS 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 your electric bill. Press the SLEEP button to select Sleep Mode. The SLEEP icon will appear.
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 Turn On the unit and select a mode. F Press Function until the Sleep icon is displayed. F Press Enter/Cancel to start Sleep Mode. F Cancel Sleep Mode Press Function until the Sleep icon appears. Press the Enter/Cancel button to cancel Sleep Mode.
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.
OPERATING INSTRUCTIONS I-FEEL MODE The indoor unit will sense room temperature at the wired Tether Controller instead of at the return air section of the indoor unit. Indoor Unit Room Sensor A Tether Controller Indoor Room Sensor B I-Feel Settings Press the Function button until the I-Feel icon is displayed, then press Enter/Cancel to activate the function. F Turn Unit On. Press Function until the I-Feel icon is displayed. Press Enter/Cancel to start I-Feel mode.
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 In Heat mode, press Function until the Freeze Guard icon is displayed. Press Enter/Cancel button to activate.
OPERATING INSTRUCTIONS 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.
OPERATING INSTRUCTIONS OUTDOOR AIR MODE The Outdoor Air Mode can be used when a field supplied outdoor air damper is connected to the Slim Duct unit or ductwork. The Outdoor Air Mode controls the outdoor air entering the system. Fresh Air Air Intake Pipe Air Supply Pipe Outdoor Fresh Air Indoor Side Air Valve Outdoor Air Setting When the unit is ON, press Function until the AIR icon is displayed. Press ▲ and ▼ to select the outdoor air damper run time (see table below).
OPERATING INSTRUCTIONS CELSIUS OR FAHRENHEIT TEMPERATURE DISPLAY F The wired Tether Controller is set from the factory to display temperature in Fahrenheit ( Fº). If Celsius (Cº) is desired, turn the unit OFF, press Mode and ▼ buttons at the same time for 5 seconds to alternate between temperature displays. PRIVACY LOCK The Privacy Lock prevents unauthorized access to the unit controls and prevents tampering with system settings.
OPERATING INSTRUCTIONS POWER FAILURE MODES The unit has two selectable system power up modes: Power Failure Recovery After the initial power up, the unit will store user selections and system parameters in non-volatile memory. These parameters are retained during a power failure. When power is returned, the system will automatically return to the last operating mode. Power Failure Standby The system will power up in standby or off mode. This is the factory default setting.
CARE AND CLEANING CLEANING THE FILTER • Never remove the air filter from the unit except for cleaning; otherwise it may cause dust or dirt to restrict airflow to the unit. • When the air conditioning unit is used in an environment with heavy dust, the air filter should be cleaned often (generally once every two weeks). Perform the following on an annual basis: • Clean or replace air filter. • Inspect drain line for potential clogs or leaks.
TROUBLESHOOTING & DIAGNOSTIC CODES Troubleshooting PROBLEM POSSIBLE CAUSES Failed startup • There is no power supply • Circuit breaker is tripped due to electrical leakage Unit runs, then stops • Air inlet/outlet of the indoor/outdoor unit is clogged Poor cooling effect • • • • • Poor heating effect • Air filter screen is too dirty or clogged • A door or window is open • Temperature is set too low Air filter screen is too dirty or clogged There are too many heat sources in the room A door or wind
ENERGY SAVING TIPS 1. Relaxing room temperature at night is OK: During the nighttime hours you don't require the same level of conscious cooling or heating. Try using Sleep Mode to gradually relax room temperature and allow the unit to run less and save energy. 2. Curtains and shades: In the summer, you need to block the effects of the sun. Close window curtains and shades on the south and west side of your home to help block solar heat. In winter, the sun is your friend.
GREE ELECTRIC APPLIANCES, INC. www.greecomfort.com LIMITED WARRANTY GREE distributor (hereinafter “Company”) warrants this product against failure due to defect in materials or workmanship under normal use and maintenance as follows. All warranty periods begin on the date of original installation. If the date cannot be verified, the warranty period begins one hundred twenty (120) days from date of manufacture.
