ComfortStar CCT-S Super-Slim Four-Way Cassette Air Conditioner Owner's Manual
Model: CCT-S Series
Introduction
This manual provides essential information for operating, maintaining, and troubleshooting your ComfortStar Super-Slim Four-Way Cassette air conditioner. Following these instructions ensures proper function and extends the lifespan of your unit.
IMPORTANT NOTE: Read this manual carefully before installing or operating your new air conditioning unit. Save this manual for future reference.
1 Safety Precautions
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.
[CAUTION] Failure to observe a caution may result in injury or equipment damage.
General Warnings:
- Ask an authorized dealer to install this air conditioner. Inappropriate installation may cause water leakage, electric shock, or fire. The warranty will be voided if the unit is not installed by professionals.
- If an abnormal situation arises (like a burning smell), turn off the power supply and call your dealer for instructions to avoid electric shock, fire, or injury.
- DO NOT let the indoor unit or the remote control get wet. It may cause electric shock or fire.
- DO NOT insert fingers, rods, or other objects into the air inlet or outlet. This may cause injury, as the fan may be rotating at high speeds.
- DO NOT use a flammable spray such as hair spray, lacquer, or paint near the unit. This may cause fire or combustion.
General Cautions:
- DO NOT touch the air outlet while the swing flap is in motion. Fingers might get caught, or the unit may break down.
- DO NOT inspect the unit by yourself. Ask an authorized dealer to perform the inspection.
- To prevent product deterioration, do not use the air conditioner for preservation purposes (storage of food, plants, animals, works of art, etc.).
- DO NOT touch the evaporator coils inside the indoor unit. The evaporator coils are sharp and may cause injury.
- DO NOT operate the air conditioner with wet hands. It may cause electric shock.
- DO NOT place items that might be affected by moisture damage under the indoor unit. Condensation can occur at a relative humidity of 80%.
- DO NOT expose heat-producing appliances to cold air or place them under the indoor unit. This may cause incomplete combustion or deformation of the unit due to the heat.
- After long periods of usage, check the indoor unit to see if anything is damaged. If the indoor unit is damaged, it may fall and cause injury.
- If the air conditioner is used together with other heating devices, thoroughly ventilate the room to avoid oxygen deficiency.
- DO NOT climb onto or place objects on top of the outdoor unit.
- DO NOT operate the air conditioner when using fumigant insecticides. The chemicals may become layered with the unit and endanger those who are hypersensitive to chemicals.
- DO NOT let children play with the air conditioner.
- The air conditioner can be used by children aged 8 years and older and people with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, if they have been given instruction on how to properly and safely operate the system.
- DO NOT operate the air conditioner in a wet room (e.g., bathroom or laundry room). This can cause electrical shock and cause the product to deteriorate.
2 Indoor Unit Parts and Major Functions
Unit Parts
A diagram shows the indoor unit with the following parts:
- Display panel
- Louver
- Air outlet
- Air inlet
(Refer to Fig. 2.1 in the original document for visual representation.)
Operating Conditions
Use the system within the following temperature ranges for safe and effective operation. If the air conditioner is used outside these conditions, it may malfunction or be less efficient.
| COOL Mode | HEAT mode | DRY mode | |
|---|---|---|---|
| Indoor Temperature | 17°-32°C (62°-90°F) | 0°-30°C (32°-86°F) | 17°-32°C (62°-90°F) |
| Outdoor Temperature | 18°-43°C (64°-109°F) -7°-43°C (20°-109°F) (low temperature cooling models) 18°-52°C (64°-126°F) (For special tropical models) | -7°-24°C (20°-76°F) | 18°-43°C (64°-109°F) 18°-52°C (64°-126°F) (For special tropical models) |
Features
Default Setting
When the air conditioner restarts after a power failure, it defaults to factory settings (AUTO mode, AUTO fan, 24°C / 76°F). This may cause inconsistencies between the remote control and unit panel. Use your remote control to update the status.
Auto-Restart (some models)
In case of power failure, the system stops immediately. When power returns, the Operation light on the indoor unit will flash. To restart, press the ON/OFF button on the remote control. If the system has an auto-restart function, it will resume with the same settings.
Louver Angle Memory Function (Optional)
Some models feature a louver angle memory function. Upon restart after a power failure, the horizontal louvers return to their previous position. To prevent condensation, the louver angle should not be set too small. Press the manual button to reset horizontal louver settings.
Refrigerant Leak Detection System (some models)
In the event of a refrigerant leak, the LCD screen will display "EC" and the LED indicator light will flash.
Energy Saving Tips
- DO NOT set the unit to excessive temperature levels.
- While cooling, close the curtains to avoid direct sunlight.
- Doors and windows should be kept closed to retain cool or warm air in the room.
- DO NOT place objects near the air inlet and outlet of the unit, as this reduces efficiency.
- Set a timer and use the built-in SLEEP/ECONOMY mode if applicable.
- If the unit will not be used for a long time, remove the batteries from the remote control.
- Clean the air filter every two weeks. A dirty filter reduces cooling or heating efficiency.
- Adjust louvers properly to avoid direct airflow.
Visual Aid:
- Closing curtains while heating helps retain heat.
- Doors and windows should be kept closed.
3 Manual Operations
The indoor unit's display panel can be used to operate the unit if the remote control is misplaced or out of batteries.
A diagram shows the indoor unit's control panel with labels:
- Manual button
- Operation indicator
- LED display
- Timer indicator
- Infrared receiver
- Alarm indicator
- PRE-DEF (pre-heating/defrost) indicator
(Refer to Fig. 3.1 and Fig. 3.2 in the original document for visual representation.)
- MANUAL button: Selects modes in the order: AUTO, FORCED COOL, OFF.
- FORCED COOL mode: The Operation light flashes. The system switches to AUTO after 30 minutes of high-speed cooling. The remote control is disabled during this operation.
- OFF mode: When the panel is turned OFF, the unit powers down, and the remote control is re-enabled.
4 Care and Maintenance
Safety Precautions
- Contact an authorized service technician for repair or maintenance. Improper work may cause water leakage, electric shock, fire, and void the warranty.
- DO NOT substitute fuses with incorrect amperage ratings, as this may cause circuit damage or fire.
- Ensure the drain hose is set up correctly to prevent leakage, property damage, fire, and electric shock.
- Verify all wires are connected properly to prevent electrical shock or fire.
Unit Maintenance - BEFORE CLEANING OR MAINTENANCE
- Always turn off the air conditioning system and disconnect the power supply before cleaning or maintenance.
- DO NOT use chemicals or chemically treated cloths.
- DO NOT use benzene, paint thinner, polishing powder, or other solvents, as they can crack or deform the plastic surface.
- DO NOT wash the unit under running water due to electrical danger.
- DO NOT use water hotter than 40°C (104°F) to clean the front panel, as it may deform or discolor.
- Clean the unit with a damp, lint-free cloth and neutral detergent. Dry with a dry, lint-free cloth.
How To Clean The Air Filter
The filter prevents dust and particles from entering the indoor unit. Dust buildup reduces efficiency. For optimal performance, clean the air filter every two weeks, or more often in dusty areas. Replace heavily clogged or un-cleanable filters.
[WARNING]: DO NOT REMOVE OR CLEAN THE FILTER BY YOURSELF. Removal and cleaning can be dangerous and must be performed by a certified technician.
NOTE: In households with pets, periodically wipe down the grille to prevent airflow blockage from animal hair.
Filter Cleaning Steps:
- Unlock the grille by pushing the two tabs towards the middle simultaneously.
- Unplug the display panel cable from the control box on the main body.
- Detach the grille from the main unit by holding it at a 45° angle, lifting slightly, and pulling forward. (Refer to Fig. 4.1 in the original document.)
- Remove the air filter. (Refer to Fig. 4.2 in the original document.)
- Clean the air filter by vacuuming the surface or washing it in warm water with mild detergent.
- If using a vacuum cleaner, the inlet side should face the vacuum. (Refer to Fig. 4.3 in the original document.)
- If using water, the inlet side should face down and away from the water stream. (Refer to Fig. 4.4 in the original document.)
- Rinse the filter with clean water and allow it to air-dry. DO NOT let it dry in direct sunlight.
- Reinstall the filter.
- Reinstall the front grille and reconnect the display panel cable to the control box.
(Note: Some models have an auto-lifting panel function for easier filter cleaning.)
Repairing Refrigerant Leaks
[WARNING] If refrigerant leaks occur, turn off the air conditioner and any combustible heating devices, ventilate the room, and call your dealer immediately. Refrigerant is toxic and flammable. DO NOT use the unit until the leak is repaired.
When installed in a small room, measures must be taken to prevent refrigerant concentration from exceeding safety limits in case of a leak, as concentrated refrigerant poses a severe health and safety threat.
Refrigerant Leak Detection System (some models):
In case of a refrigerant leak, the LCD screen will display "EC" and the LED indicator light will flash.
Preparation For Periods Of Non-Use
Maintenance after Extended Non-Use:
- Remove any obstacles blocking the vents of both indoor and outdoor units.
- Clean the air filter and front grille of the indoor unit. Reinstall the clean, dry air filter.
- Turn on the main power switch at least 12 hours before operating the unit.
Storing the Unit While Not In Use:
- Run the appliance on FAN mode for 12 hours in a warm room to dry it and prevent mold.
- Turn off the appliance and unplug it.
- Clean the air filter as per previous instructions. Reinstall the clean, dry filter before storing.
- Remove batteries from the remote control.
5 Troubleshooting
[CAUTIONS] If any of the following conditions occur, switch off the power supply immediately and contact your dealer:
- Operation light flashes rapidly after restart.
- Remote control buttons do not work.
- Unit continually trips fuses or circuit breakers.
- A foreign object or water enters the air conditioner.
- The indoor unit leaks.
Common Problems
The following symptoms are not malfunctions and usually do not require repairs:
| Problem | Possible Causes |
|---|---|
| Unit does not turn on when pressing ON/OFF button | The unit has a 3-minute protection feature to prevent overloading. It cannot be restarted within three minutes of being turned off. |
| The unit changes from COOL mode to FAN mode | Cooling and Heating Models: If Operation and PRE-DEF indicators are lit, the outdoor temperature is too cold, and the unit's anti-cold wind is activated for defrosting. Cooling-only Models: If the "Fan Only" indicator is lit, the outdoor temperature is too cold, and the unit's anti-freeze protection is activated for defrosting. |
| The indoor unit emits white mist | The unit changes its setting to prevent frost formation. It will resume operation once the temperature increases. In humid regions, a large temperature difference between room air and conditioned air can cause white mist. |
| Both the indoor and outdoor units emit white mist | The set temperature has been reached, turning off the compressor. The unit resumes operation when the temperature fluctuates. When the unit restarts in HEAT mode after defrosting, white mist may be emitted due to moisture from the defrosting process. |
| The indoor unit makes noises | A squeaking sound is heard when the system is OFF or in COOL mode, or when the optional drain pump is operating. A squeaking sound may occur after running in HEAT mode due to expansion and contraction of plastic parts. |
| Both the indoor unit and outdoor unit make noises | A low hissing sound may occur during operation, caused by refrigerant gas flow. This is normal. |
| The outdoor unit makes noises | A low hissing sound may be heard when the system starts, stops, or is defrosting, caused by refrigerant gas stopping or changing direction. This is normal. The unit makes different sounds based on its current operating mode. |
| Dust is emitted from either the indoor or outdoor unit | The unit may accumulate dust during extended non-use, emitted when turned on. Covering the unit during inactivity can mitigate this. The unit may absorb environmental odors (furniture, cooking, cigarettes, etc.). The unit's filters may have become moldy and require cleaning. |
| The unit emits a bad odor | The unit may absorb odors from the environment (such as furniture, cooking, cigarettes, etc.) which will be emitted during operations. The unit's filters have become moldy and should be cleaned. |
| The fan of the outdoor unit does not operate | During operation, the fan speed is controlled to optimize product operation. |
Troubleshooting Tips
When troubles occur, check the following points before contacting a repair company:
| Problem | Possible Causes | Solution |
|---|---|---|
| The unit is not working | Power failure | Wait for power to be restored. |
| The power switch is off | Turn on the power. | |
| The fuse is burned out | Replace the fuse. | |
| Remote control batteries are dead | Replace the remote control batteries. | |
| The unit's 3-minute protection has been activated. | Wait three minutes after restarting the unit. | |
| Poor cooling performance | Temperature setting may be higher than the ambient room temperature. | Lower the temperature setting. |
| The heat exchanger on the indoor or outdoor unit is dirty. | Clean the affected heat exchanger. | |
| The air filter is dirty. | Remove and clean the filter according to instructions. | |
| The unit starts and stops frequently | The air inlet or outlet of either unit is blocked. | Turn the unit off, remove the obstruction, and turn it back on. |
| Doors and windows are open. | Make sure all doors and windows are closed while operating the unit. | |
| Excessive heat is generated by sunlight. | Close windows and curtains during periods of high heat or bright sunshine. | |
| Low refrigerant due to leak or long-term use. | Check for leaks, re-seal if necessary, and top off refrigerant. | |
| There's too much or too little refrigerant in the system. | Check for leaks and recharge the system with refrigerant. | |
| There is air, incompressible gas, or foreign material in the refrigeration system. | Evacuate and recharge the system with refrigerant. | |
| System circuit is blocked. | Determine which circuit is blocked and replace the malfunctioning equipment. | |
| The compressor is broken. | Replace the compressor. | |
| The voltage is too high or too low. | Install a manostat to regulate the voltage. | |
| Poor heating performance | The outdoor temperature is lower than 7°C (44.5°F). | Check for leaks and recharge the system with refrigerant. |
| Cold air is entering through doors and windows. | Make sure all doors and windows are closed during use. | |
| Low refrigerant due to leak or long-term use. | Check for leaks, re-seal if necessary, and top off refrigerant. |
Error Codes
The following table lists error codes indicated by the unit:
| Number | Cause | Operation Indicator | Timer Indicator | Error Code | PRE-DEF Indicator | Alarm Indicator |
|---|---|---|---|---|---|---|
| 1 | In-outdoor unit communication checking channel is abnormal | Quick-flash | E1 | Quick-flash | ||
| 2 | Room temperature sensor checking channel is abnormal | Quick-flash | E2 | |||
| 3 | Evaporator sensor malfunction | Quick-flash | E3 | |||
| 4 | Condenser sensor malfunction | E4 | Quick-flash | |||
| 5 | Water pump temperature sensor | E5 | Quick-flash | |||
| 6 | Outdoor malfunction | Quick-flash | Quick-flash | E6 | Quick-flash | Quick-flash |
| 7 | EEPROM malfunction | Quick-flash | Quick-flash | E7 | ||
| 8 | Water level alarm malfunction | E8 | Quick-flash | |||
| 9 | DC motor speed out of control | Quick-flash | E6 | |||
| 10 | Outdoor unit low pressure malfunction | Quick-flash | Quick-flash | Ed | Quick-flash | |
| 11 | Auto-lifting panel communication error | Quick-flash | F0 | Quick-flash | Quick-flash | |
| 12 | Auto-lifting panel malfunction | F1 | Quick-flash | Quick-flash | ||
| 13 | Auto-lifting panel is open | On | F2 | Quick-flash | Quick-flash | |
| 14 | Refrigerant leak detection system malfunction | Quick-flash | EC | Quick-flash |
6 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. Disposal requires special collection and treatment. DO NOT dispose of this product as household waste or unsorted municipal waste.
When disposing of this appliance, you have the following options:
- Dispose of the appliance at a designated municipal electronic waste collection facility.
- When buying a new appliance, the retailer will take back the old appliance free of charge.
- The manufacturer will also take back the old appliance free of charge.
- Sell the appliance to certified scrap metal dealers.
NOTE: Disposing of this appliance in forests or other natural surroundings endangers health and the environment. Hazardous substances may leak into groundwater and enter the food chain.
[WEEE Symbol]: The crossed-out wheeled bin symbol indicates that this product should not be disposed of with household waste. (Visual representation of the WEEE symbol is described here.)
Disclaimer
The design and specifications are subject to change without prior notice for product improvement. Consult with the sales agency or manufacturer for details.
Document Version/Date: 20160301
