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 Page 8 

   Care And 

Maintenance

Safety Precautions

• 

Contact an authorized service technician for repair 
or maintenance of this unit. Improper repair and 
maintenance may cause water leakage, electrical 
shock, or fire, and may void your warranty.    

• 

DO NOT  

substitute a blown fuse with a higher or 

lower amperage rating fuse, as this may cause circuit 
damage or an electrical fire.   

• 

Please make sure the drain hose is set up according to 
the instructions. Failure to do so could cause leakage 
and result in personal property damage, fire and 
electric shock.   

• 

Make sure that all wires are connected properly. 
Failure to connect wires according to instructions can 
result in electrical shock or fire.  

Unit Maintenance

  BEFORE CLEANING OR 

MAINTENANCE

• 

 Always turn off your air conditioning system and 
disconnect its power supply before cleaning or 
maintenance.  

• 

 

DO NOT

 use chemicals or chemically treated cloths 

to clean the unit

• 

 

DO NOT

 use benzene, paint thinner, polishing 

powder or other solvents to clean the unit. They can 
cause the plastic surface to crack or deform. 

• 

 

DO NOT

 wash the unit under running 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-free cloth and 
neutral detergent. Dry the unit with a dry, lint-free 
cloth.  

How To Clean The Air Filter

The filter prevents dust and other particles from entering 
the indoor unit. Dust buildup can reduce the efficiency of 
the air conditioner. For optimum efficiency, clean the air 
filter every two weeks or more frequently if you live in a 
dusty area. Replace the filter with a new one if it’s heavily 
clogged and unable to be cleaned.      

  WARNING: DO NOT REMOVE OR 

CLEAN THE FILTER BY YOURSELF 

Removing and cleaning the filter can be dangerous. 
Removal and maintenance must be performed by a 
certified technician.  

NOTE:

 In households with animals, you will have to 

periodically wipe down the grille to prevent blocked 
airflow due to animal hair. 

1.   Unlock the grille by pushing the two tabs towards the 

middle simultaneously. 

2.   Unplug the display panel cable from the control box on 

the main body. 

Press tabs to 
release grille 

Fig. 4.1

3.   Detach the grille from the main unit by holding the 

grille at a 45° angle, lifting it up slightly and then 
pulling the grille forward.   

Care And Maintenance

4

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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