OWNER’S MANUAL UltraV Series Outdoor Units Models A-VMH18DU-1 A-VMH28TU-1 A-VMH36QU-1 517.787.2100 • www.marsdelivers.
Owner’s Manual - A-VMH18DU,28TU,36QU-1 Table of Contents Owner’s Manual 1 Safety Precautions .................................................... 04 SAFETY FIRST 2 Unit Parts and Major Functions ......................... 3 Manual Operation and Maintenance ..............
Owner’s Manual - A-VMH18DU,28TU,36QU-1 4 Troubleshooting ................................. 11 Common Problems ................................. Troubleshooting Tips ............................... 11 13 Warranty........................................................................................................................ 14 WARNING: Servicing shall only be performed as recommended by the equipment manufacturer.
Owner’s Manual - A-VMH18DU,28TU,36QU-1 1 Safety Precautions Thank you for purchasing this air conditioner. This manual will provide you with information on how to operate, maintain, and troubleshoot your air conditioner. Following the instructions will ensure the proper function and extended lifespan of your unit. Please pay attention to the following signs: WARNING Failure to observe a warning may result in death. The appliance must be . installed in accordance with national regulations.
Owner’s Manual - A-VMH18DU,28TU,36QU-1 CAUTION • 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 in a safe way and understand the hazards involved. Children shall not play with the appliance. Cleaning and user maintenance shall not be made by children .
Owner’s Manual - A-VMH18DU,28TU,36QU-1 2 Unit Parts And Major Functions Unit Parts Wall-mounted type Duct / Ceiling type One-four One-three Fig. 2.1 Indoor unit 1. Panel frame 2. Rear air intake grille 3. Front panel 4. Air purifying filter & Air filter(behind) 5. Horizontal louver 6. LCD display window 7. Vertical louver 8. Manual control button(behind) 9. Remote controller holder Outdoor unit 10. Drain hose, refrigerant connecting pipe 11. Connective cable 12. Stop valve 13. Fan hood Fig. 2.
Owner’s Manual - A-VMH18DU,28TU,36QU-1 Floor and standing type(console) Compact four-way cassette type Fig. 2.4 Fig. 2.3 Indoor unit 1. Drain pump(drain water from indoor unit) 2. Drain hose 3. Air outlet 4. Air inlet 5. Air-in grill 6. Display panel 7. Remote controller Outdoor unit 8. refrigerant connecting pipe 9. Connective cable 10. Stop valve 11. Fan hood Indoor unit 1. Air flow louver (at air outlet) 2. Air inlet (containing air filter) 3. Remote controller 4. Installation part 5.
Owner’s Manual - A-VMH18DU,28TU,36QU-1 NOTE: For multi-split type air conditioners, one outdoor unit can be matched to different types of indoor units. All of the pictures in this manual are for demonstration purposes only. Your air conditioner may be slightly different, if similar in shape. The following pages introduce several kinds of indoor units that can be matched with the outdoor units. Operating Conditions Use the system under the following temperatures for safe and effective operation.
Owner’s Manual - A-VMH18DU,28TU,36QU-1 The air conditioner turns to FAN ONLY mode from COOL or HEAT (for cooling and heating models only) mode. Heating mode (For cooling and heating models only) The air conditioner draws in heat from the outdoor unit and releases it via the indoor unit during heating. When the outdoor temperature falls, heat drawn in by the air conditioner decreases accordingly.
Owner’s Manual - A-VMH18DU,28TU,36QU-1 Manual Operations And Maintenance Operation mode selection 3 Optimal operation While two or more indoor units are simultaneously operating, make sure the modes do not conflict with each other. The heat mode claims precedence over all other modes. If the unit intially started to operate in HEAT mode, the other units can operate in HEAT mode only.
Owner’s Manual - A-VMH18DU,28TU,36QU-1 4 Troubleshooting CAUTIONS If one of the following conditions occurs, switch off the power supply immediately and contact your dealer for further assistance. • • • • • The operation light continues to flash rapidly after the unit has been restarted. The remote control buttons do not work after replacing batteries. The unit continually trips fuses or circuit breakers. A foreign object or water enters the air conditioner. Other abnormal situations.
Owner’s Manual - A-VMH18DU,28TU,36QU-1 Problem The indoor unit makes noises Possible Causes A squeaking sound is heard when the system is OFF or in COOL mode. The noise is also heard when the drain pump (optional) is in operation. A squeaking sound may occur after running the unit in HEAT mode due to expansion and contraction of the unit’s plastic parts. A low hissing sound may occur during operation. This is normal and is caused by refrigerant gas flowing through both the indoor and outdoor units.
Owner’s Manual - A-VMH18DU,28TU,36QU-1 Troubleshooting Tips When troubles occur, please check the following points before contacting a repair company.
Owner’s Manual - A-VMH18DU,28TU,36QU-1 LIMITED EXPRESS WARRANTY Please visit www.marsdelivers.com to register your new product Congratulations on purchasing your new HVAC equipment. It’s been designed for long life and reliable service, and is backed by one of the strongest warranties in the industry. Your unit automatically qualifies for the warranty coverage listed below, providing you keep your proof of purchase (receipt) for the equipment and meet the warranty conditions.
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