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Operating Instructions Split System Air Conditioner Model No. Indoor Units Outdoor Units (For Single use) CS-KS12NB41 CU-KS12NK1A CS-KS18NB4UW CU-KS18NKU CU-KS18NKUA (For Multiple use) CU-3KS19NBU CU-4KS24NBU CU-4KS31NBU Ceiling Panel CZ-18BT1U This air conditioner uses the refrigerant R410A. “Multiple use” is applied for the model CS-KS18NB4UW only.
FEATURES This air conditioner is an inverter type unit that automatically adjusts capability as appropriate. Details on these functions are provided below; refer to these descriptions when using the air conditioner. • Microprocessor Controlled Operation • Automatic and 3-step Fan Speed The interior compartment of the remote controller contains Auto/High/Medium/Low several features to facilitate automatic operation, easy...
INSTALLATION LOCATION • To prevent possible hazards from insulation failure, the unit must be grounded. • We recommend that this air conditioner be installed • Do not clean inside the indoor and outdoor units by users. properly by qualified installation technicians in Engage authorized dealer or specialist for cleaning.
NAMES OF PARTS UNIT DISPLAY AND OPERATION BUTTON INDOOR UNIT INDOOR UNIT Air Intakes OPERATION button OPERATION lamp Air Outlet TIMER lamp (4 locations) HIGH POWER lamp REMOTE CONTROL receiver Remote Controller IMPORTANT Refrigerant Tubes Avoid using radio equipment such as mobile phone near (within OUTDOOR UNIT 4 ft.
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REMOTE CONTROLLER (DISPLAY) Displayed when transmitting data Displayed when indoor unit sensor is in use Displayed when setting temperature Displayed when temperature is shown Displayed when setting timer Displayed when the time display is set to 12-hour time. Symbols (1) Operation mode (4) Timer MILD DRY ......
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REMOTE CONTROLLER Transmitter When you press the buttons on the remote controller, the mark appears in the display to transmit the setting changes to the receiver in the air conditioner. Display Information on the operating conditions is displayed while the remote controller is switched on.
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Sensor A temperature sensor inside the remote controller senses the room temperature. ON/OFF operation button This button is for turning the air conditioner on and off. 1 HR. TIMER button (1-HOUR OFF TIMER) : When you press this button, regardless of whether the unit is operating or stopping, the unit operates for one hour and then shuts down.
USING THE REMOTE CONTROLLER HOW TO INSTALL BATTERIES HOW TO USE THE REMOTE CONTROLLER When using the remote controller, always point the unit’s transmitter head directly at the air conditioner’s receiver. Air Conditioner (Indoor unit) Receiver (Transmitter Remote Controller head) REMOTE CONTROLLER INSTALLATION ACL button POSITION...
OPERATION WITH THE REMOTE CONTROLLER 1. Operation 2. Adjusting the Fan Speed A. Automatic fan speed Simply set the FAN SPEED selector button to the position. This automatically sets the best fan speed for the room temperature. B. Manual fan speed If you want to adjust fan speed manually during operation, just set the FAN SPEED selector button as desired.
4. Night Setback Mode HIGH POWER mode can be used to increase the output of the indoor unit for all operation modes. Press the HIGH POWER button while unit is operating. mark appears in the display. To cancel, press HIGH POWER button again. •...
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1. How to set the present time Operation Indication (Example) To set to 10:30 pm. Press the ON TIME setting The timer indication is button once. displayed, and the present ON time is shown. Press the Advance, Return The timer indication ) button until AM 7:10 blinks.
USING THE 1-HOUR OFF ADJUSTING THE AIRFLOW TIMER DIRECTION The vertical airflow can be adjusted by moving the flap with the 1. 1-Hour OFF Timer remote controller. Do not move the flap with your hands. Confirm that the remote controller has been turned on. Use the FLAP button to set either the sweep function or one of the six airflow direction settings.
OPERATION WITHOUT THE CARE AND CLEANING REMOTE CONTROLLER • Cleaning and maintenance operations must be carried out by specially INDOOR UNIT trained personnel. While working in high places, slipping or falling may result in serious injury. • For safety, be sure to turn the air conditioner off and also to disconnect the power before cleaning.
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Air filter How to remove the air intake grille The air filter collects dust and other particles from the air and should Open the air intake grille. be cleaned once every 6 months. Detach the safety cord from the frame (remember to attach it If the filter gets blocked, the efficiency of the air conditioner drops again after cleaning or maintenance).
TROUBLESHOOTING OPERATING RANGE (BEFORE CALLING FOR SERVICE) The air conditioner is operable within the temperature ranges as listed below: If your air conditioner does not work properly, first check the following For Cooling Only Models : CU-KS18NKU points before requesting service. If it still does not work properly, Temperature Indoor air Outdoor air...
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