OWNER’S MANUAL AIR CONDITIONER Please read this manual carefully before operating your set and retain it for future reference. TYPE : CEILING CASSETTE - 4WAY www.lg.com P/NO : MFL42803003...
Ceiling Cassette - 4Way Type Indoor Unit Ownerʼs Manual TABLE OF CONTENTS FOR YOUR RECORDS Write the model and serial numbers here: Safety Precautions....3 Model # Serial # You can find them on a label on the side of each unit.
Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. ■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications. WARNING This symbol indicates the possibility of death or serious injury.
Safety Precautions ■ Operation Do not let the air conditioner Take care to ensure that power Do not place anything on the run for a long time when the cable could not be pulled out or power cable. humidity is very high and a damaged during operation.
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Safety Precautions CAUTION ■ Installation Always check for gas (refrigerant) leakage Install the drain hose to ensure that Keep level even when installing after installation or repair of product. water is drained away properly. the product. • Low refrigerant levels may •...
Prior to operation Prior to Operation Preparing for operation 1. Contact an installation specialist for installation. 2. Use a dedicated circuit. Usage 1. Being exposed to direct airflow for an extended period of time could be hazardous to your health. Do not expose occupants, pets, or plants to direct airflow for extended periods of time.
Operating Instructions Operating Instructions Name and function of wired remote controller(Accessory) 1. Operation indication screen 2. Set temperature button • It will set not room temperature but outlet air temperature. 3. Fan speed button • Fan Speed have 3 Steps. •...
Operating Instructions Name and function of wireless remote controller(Accessory) 1. Plasma button (optional) Used to start or stop the plasma-purification function. 2. Jet cool button Speed cooling operates super high fan speed. 3. Operation mode selection button Used to select the operation mode. 4.
Operating Instructions Forced Operation(TE only) Operation procedures when the remote control can't be used. Press the tact switch (Forced operation) for 2 seconds. If you want to stop operation, press again the tact switch. In case the power comes on again after power failure on the Forced Operation mode, the operating conditions are automatically set as follows: During Forced Operation, the initial mode continues.
Maintenance and Service Maintenance and Service CAUTION: Before performing any maintenance, turn off the main power to the system. Grille, Case, and Remote Control ❏ Turn the system off before cleaning. To clean, wipe with a soft, dry cloth. Do not use bleach or abrasives. Anti-biofilter NOTICE Supply power must be disconnected before...
Maintenance and Service When the air conditioner is not going to be used for a long time. When it is not going to be used for When the air conditioner is to be used again. a long time. Operate the air conditioner at the Clean the air filter and install it in the following settings for 2 to 3 hours.
Maintenance and Service Before you call for service... Troubleshooting Tips! Save time and money! Check the following points before requesting repairs or service..If the malfunction persist, please contact your dealer. The air conditioner The room has a It seems that Air conditioner does does not operate.