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 Page 6 

Features

Indoor Unit 

Parts And Major 

Functions

Default Setting

When the air conditioner restarts after a power failure, it 
will default to the factory settings (AUTO mode, AUTO fan, 
24°C (76°F)). This may cause inconsistencies on 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 will immediately stop. 
When power returns, the Operation light on the indoor 
unit will flash. To restart the unit, press the 

ON/OFF 

button 

on the remote control. If the system has an auto restart 
function, the unit will restart using the same settings.     

 

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 keep cool or warm air in the room. 

• 

DO NOT

 place objects near the air inlet and outlet of the unit. This will reduce the efficiency of the unit.

• 

Set a timer and use the built-in SLEEP/ECONOMY mode if applicable.

• 

If you don’t plan to use the unit for a long time, remove the batteries from the remote control. 

• 

Clean the air filter every two weeks. A dirty filter can reduce cooling or heating efficiency. 

• 

Adjust louvers properly and avoid direct airflow.

Louver Angle Memory Function (Optional)

Some models are designed with a louver angle memory 
function. When the unit restarts after a power failure, the 
angle of the horizontal louvers will automatically return to 
the previous position. The angle of the horizontal louver 
should not be set too small as condensation may form and 
drip into the machine. To reset the louver, press the manual 
button, which will reset the 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. 

Closing the curtains while heating also
              helps keep the heat in  

Doors and windows should be kept 
                        closed  

Summary of Contents for LICH4024180P431-C

Page 1: ...er Slim Four Way Cassette IMPORTANT NOTE Read this manual carefully before installing or operating your new air conditioning unit Make sure to save this manual for future reference Model Numbers LICH4...

Page 2: ...Indoor Unit Parts and Major Functions 05 Manual Operation 07 Table of Contents Owner s Manual SAFETY FIRST Safety Precautions 04 1 2 3...

Page 3: ...a Unit Maintenance 08 b How to Clean the Air Filter 08 c Repairing Refrigerant Leaks 08 d Preparation for Periods of Non use 09 Troubleshooting 10 a Common Problems 10 b Troubleshooting Tips 11 Europe...

Page 4: ...ioner with wet hands It may cause electric shock DO NOT touch the evaporator coils inside the indoor unit The evaporator coils are sharp and may cause injury Failure to observe a warning may result in...

Page 5: ...e and effective 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 Indoor Temperature 17 32 C 62 90 F 0 3...

Page 6: ...and outlet of the unit This will reduce the efficiency of the unit Set a timer and use the built in SLEEP ECONOMY mode if applicable If you don t plan to use the unit for a long time remove the batter...

Page 7: ...er Infrared receiver Fig 3 1 Fig 3 2 MANUAL button This button selects the mode in the following order AUTO FORCED COOL OFF FORCED COOL mode In FORCED COOL mode the Operation light flashes The system...

Page 8: ...ing water Doing so causes electrical danger DO NOT use water hotter than 40 C 104 F to clean the front panel This can cause the panel to deform or become discolored Clean the unit using a damp lint fr...

Page 9: ...icator light will flash Preparation For Periods Of Non Use Maintenance after Extended Non Use 1 Remove any obstacles blocking the vents of both the indoor and outdoor units 2 Clean the air filter and...

Page 10: ...s setting to prevent frost from forming on the unit Once the temperature increases the unit will start operating again The set temperature has been reached at which point the unit turns off the compre...

Page 11: ...indoor or outdoor unit is dirty Clean the affected heat exchanger The air filter is dirty Remove the filter and clean it according to instructions The air inlet or outlet of either unit is blocked Tur...

Page 12: ...load protection 1 On F0 11 Outdoor temperature sensor error 2 On F 1 12 Outdoor condenser pipe sensor error 3 On F2 13 Discharge air temperature sensor error 4 On F3 14 Outdoor EEPROM Electrically Era...

Page 13: ...l waste When disposing of this appliance you have the following options Dispose of the appliance at designated municipal electronic waste collection facility When buying a new appliance the retailer w...

Page 14: ...Page 14 QSBPQ4U 025AEN The design and specifications are subject to change without prior notice for product improvement Consult with the sales agency or manufacturer for details...

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