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Table of Contents
Troubleshooting
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Summary of Contents for Midea MCA3U-12FNXD0
- Page 1 CASSETTE- TYP E AIR CONDI TION ER Owner’s Manual Compact Four-Way Cassette MCA3U-12FNXD0 MOU-12FN1-QD0 MCA3-18FN1D0 MOU-18FN1-QD0 IMPORTANT NOTE: Read this manual carefully before installing or operating your new air conditioning unit. Make sure to save this manual for future reference.
- Page 2 Table of Contents Owner’s Manual Safety Precautions ............ SAFETY FIRST Indoor Unit Parts and Major Functions ..05 Manual Operation ............
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Page 3: Table Of Contents
Care and Maintenance ......a. Unit Maintenance ........b. How to Clean the Air Filter ....... c. Repairing Refrigerant Leaks ..... d. Preparation for Periods of Non-use ..09 Troubleshooting ......... a. Common Problems ......b. Troubleshooting Tips ......European Disposal Guidelines .............. - Page 4 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: Failure to observe a warning may result in death.
- Page 5 Indoor Unit Parts And Major Functions Unit Parts Display panel Louver Air outlet Air inlet Fig. 2.1 Operating Conditions Use the system in the following temperature for safe and e ective operation. If the air conditioner is used outside of the following conditions, it may malfunction or be less efficient. COOL Mode HEAT mode DRY mode...
- Page 6 Features Default Setting Louver Angle Memory Function (Optional) When the air conditioner restarts after a power Some models are designed with a louver angle failure, it will default to the factory settings memory function. When the unit restarts after a (AUTO mode, AUTO fan, 24°C (76°F)).
- Page 7 Manual Operations This display panel on the indoor unit can be used to operate the unit in case the remote control has been misplaced or is out of batteries. Manual button Infrared receiver Operation indicator Alarm indicator Timer indicator PRE-DEF (pre-heating/defrost) indicator Fig.
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Page 8: Care And Maintenance
Care And Maintenance WARNING: DO NOT REMOVE OR Safety Precautions CLEAN THE FILTER BY YOURSELF Contact an authorized service technician for • repair or maintenance of this unit. Improper Removing and cleaning the filter can be repair and maintenance may cause water dangerous. -
Page 9: Repairing Refrigerant Leaks
Repairing Refrigerant Leaks 4. Remove the air lter. 5. Clean the air lter by vacuuming the surface or washing it in warm water with mild WARNING detergent. If the refrigerant leaks, turn o the air • A. If using a vacuum cleaner, the inlet side conditioner and any combustible heating should face the vacuum. -
Page 10: Troubleshooting
Troubleshooting CAUTIONS If one of the following conditions occurs, switch o 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. •... -
Page 11: Troubleshooting Tips
Problem Possible Causes Dust is emitted from The unit may accumulate dust during extended periods of non-use, which either the indoor or will be emitted when the unit is turned on. This can be mitigated by covering outdoor unit the unit during long periods of inactivity. The unit may absorb odors from the environment (such as furniture, cooking, The unit emits a cigarettes, etc.) which will be emitted during operations. - Page 12 Error Codes The number Timer Error of flashes Number Cause indicator Code per second Indoor EEPROM (Electrically Erasable Programmable Read-Only Memory) error Indoor and outdoor unit communication malfunction Indoor fan speed malfunction Indoor room temperature sensor error Evaporator coil temperature sensor error Refrigerant leak detection system malfunction Water level alarm malfunction Dual indoor unit (twin model only)
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Page 13: European Disposal Guidelines
European Disposal Guidelines Users in European Countries may be required to properly dispose of this unit. This appliance contains refrigerant and other potentially hazardous materials. When disposing of this appliance, the law requires special collection and treatment. DO NOT dispose of this product as household waste or unsorted municipal waste. - Page 14 The design and specifications are subject to change without prior notice for product improvement. Consult with the sales agency or manufacturer for details. Please check the applicable models, F-GAS and manufacturer information from the Owner's Manual - Product Fiche in the packaging of the outdoor unit.