CEILING CASSETTE OWNER’S MANUAL Models: Indoor Unit UMAT18HP230V1AC UMAT24HP230V1AC UMAT30HP230V1AC UMAT36HP230V1AC UMAT42HP230V1AC UMAT48HP230V1AC Outdoor Unit UMAT18HP230V1AO UMAT24HP230V1AO UMAT30HP230V1AO UMAT36HP230V1AO UMAT42HP230V1AO UMAT48HP230V1AO
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. Table of Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Nomenclature . . . .
INTRODUCTION 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.
NOMENCLATURE Indoor unit Example: UMAT18HP230V1AC Outdoor unit Example: UMAT18HP230V1AO 3
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.
SYSTEM SCHEMATIC 1 Indoor unit 2 3 4 Air outlet 5 Air inlet System Components* 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14.
SYSTEM FUNCTIONS 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 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.
SYSTEM FUNCTIONS INTELLIGENT 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.
SYSTEM FUNCTIONS 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. SLEEP MODE The unit will automatically adjust room temperature during your sleep time.
OPERATION OF WIRELESS REMOTE CONTROLLER Remote Controller 1 Part Name 2 3 4 5 6 7 8 9 11 12 14 15 10 13 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 INTRODUCTION FOR ICONS ON DISPLAY SCREEN Set Fan Speed Operation Mode Auto Mode X-Fan Mode Cool Mode Dry Mode Set Temperature Fan Mode Turbo Mode Timer On Se
OPERATION OF WIRELESS REMOTE CONTROLLER REMOTE CONTROLLER OPERATIONS The wireless remote controller is sleek, versatile and allows you to change room temperatures and functions on your U-Match Ceiling Cassette system from the palm of your hand. The large LCD display and buttons make it easy-to-understand and easy-to-use. The remote controller is set from factory to display temperatures in°F. If °C is desired, turn the remote OFF and then press “MODE“ and “––” buttons on the remote simultaneously.
OPERATION OF WIRELESS REMOTE CONTROLLER MODE BUTTON Use the “MODE” button to select one of the available modes. The selected mode will be displayed on the remote controller and the appropriate icon will be displayed. : AUTO : COOL : DRY AUTO – Unit will automatically select heating or cooling to maintain room temperature between 68°F and 77°F. The remote controller will display the Auto Mode icon with no setpoint. The front panel display will show "77.
OPERATION OF WIRELESS REMOTE CONTROLLER TIMER ON MODE The Ceiling Cassette unit can be programmed to automatically turn ON after a selected time period. With the unit in OFF mode, press TIMER button to activate the TIMER mode, and the ON/OFF icon will begin blinking. Press + or - button to select a time setting from 0.5 to 24 hours. Press once for slow adjustment and hold down for fast adjustment. Press TIMER button to confirm settings, and icon will stop blinking.
OPERATION OF WIRELESS REMOTE CONTROLLER X-FAN MODE When operating in humid areas, the unit 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. Push the “X-FAN” button to enable this feature. The X-FAN icon will be displayed on remote controller. To deactivate this feature, push the “X-FAN” button again.
OPERATION OF WIRELESS REMOTE CONTROLLER CLOCK BUTTON Press the CLOCK button to enter Clock Setup Mode. The clock icon will begin flashing. Set the clock by pressing the + or - buttons. Press once for slow adjustment; press and hold down for fast adjustment. When finished, press the CLOCK button to save your clock settings. This is the current time, not the timer setting. NOTE: Clock time adopts 24-hour mode. A 12-hour format is not available.
CARE AND CLEANING Routine maintenance consists of checking the condensate drain for clogs, hosing off the outdoor coil of outdoor unit and cleaning the WARNING air filter and the indoor decorative grille. CAUTION WARNING WARNING Turn off power and disconnect from indoor and outdoor units before cleaning. Failure to do so could cause electric shock. DECORATIVE GRILLE CLEANING Wash the decorative grille using warm water and mild detergent with a soft cloth or soft brush.
CARE AND CLEANING For the 18 and 48K cassette unit: 1. Remove screws with a screwdriver as shown. 2. Release the two fasteners and open the panel grille. Remove the screw Push the fastener Disassemble the air inlet grille: 1. Open the air inlet grille at 45°, lift up and remove the grille. 2. Disassemble the filter screen and remove it from the filter door. HOW TO CLEAN AIR FILTER 1. Clean dust, lint and dirt from the air filter using a vacuum cleaner or washing with water.
TROUBLESHOOTING PROBLEM CAUSE/SOLUTION System does not restart. Cause: The system has a built-in three-minute delay to prevent short and/or rapid cycling of the compressor. Solution: Wait three minutes for the protection delay to expire. Indoor unit emits unpleasant odor when started Cause: Typically unpleasant odors are the result of mold or mildew forming on the coil surfaces or the air filter. Solution: Wash indoor air filter in warm water with mild cleaner.
TROUBLESHOOTING PROBLEM CAUSE/SOLUTION Water leaking from the indoor unit into the room. Cause: While it is normal for the system to generate condensate water in cooling mode, it is designed to drain this water via a condensate drain system to a safe location. Solution: If water is leaking into the room, it may indicate one of the following. • The indoor unit is not level right to left. Level indoor unit. • The condensate drain pipe is restricted or plugged.
DIAGNOSTIC CODES The U-Match System has on board diagnostics. The indoor unit and Tether Controller will display error codes. The following is a summary of the codes with explanation: Error Codes No. 1 2 3 4 Origin of Malfunction Description High Pressure Protection High Pressure Switch If outdoor unit detects the high pressure switch is cut off for 3-sec successively, high pressure protection will occur. All the loads (except the 4-way valve in heating mode) will be switched off.
DIAGNOSTIC CODES Error Codes Error Code Malfunction Name Origin of Malfunction F2 Indoor Condenser Coil Temperature Sensor Malfunction Condenser Coil Temperature Sensor If outdoor unit detects the condenser coil temperature sensor open circuit or short circuit for 5-sec successively, condenser coil temperature sensor malfunction will be reported. The unit can automatically resume operation after the malfunction disappears.
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.