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Floor Standing Type
Air Conditioner
SERVICE MANUAL
MODEL: LF300CP(LP-C303R20)
LF480CE(LP-C483TA0)
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Contents Safety Precautions..................................................................................................................3 Functions .................................................................................................................................7 Product Specifications .........................................................................................................10 Dimensions...........................................................................
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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. This symbol indicates the possibility of death or serious injury. This symbol indicates the possibility of injury or damage to properties only. Meanings of symbols used in this manual are as shown below. Be sure not to do. Be sure
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Do not install, remove, or re- Be cautious when unpacking For installation, always install the unit by yourself and installing the product. contact the dealer or an (customer). Authorized Service Center. • There is risk of fire, electric shock, • Sharp edges could cause injury. • There is risk of fire, electric shock, explosion, or injury. Be especially careful of the case explosion, or injury. edges and the fins on the condenser and evaporator. Do not install the product on a Be sure the insta
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Do not store or use flammable gas or If strange sounds, or small or smoke comes combustibles near the product. from product. Turn the breaker off or disconnect the power supply cable. • There is risk of fire or failure of product. • There is risk of electric shock or fire. Do not open the inlet grill of the product during Be cautious that water could not enter the operation. (Do not touch the electrostatic filter, product. if the unit is so equipped.) • There is risk of physical injury, electric
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Keep level even when installing the product. Use two or more people to lift and transport the product. • To avoid vibration or water leakage. • Avoid personal injury. 90˚ Operational Use a soft cloth to clean. Do not use harsh Do not touch the metal parts of the product detergents, solvents, etc. when removing the air filter. They are very sharp! • There is risk of fire, electric shock, or damage to the • There is risk of personal injury. plastic parts of the product. Do not step on or put an
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Functions Indoor Unit Power Switch ON/OFF Operation Mode Control • Cooling, Heating, Soft Dry, Fan Indoor Fan Speed Control • High, Med & Low Room Temperature control • Maintains the room temperature in accordance with the Setting Temp. • Up: up to 30°C(86.0°F) • Down: down to 16°C(60.8°F) Sensing Heat Exchanger Temperature • Heat exchanger temperature sensor (Thermistor) Soft Dry Operation Mode • Intermittent operation of fan at low speed. Time Delay Safety Control • Restarting is inhibited fo
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Remote Control Operation ON/OFF Cooling Operation Mode Heating Operation Mode Sot Dry Operation Mode • Intermittent operation of fan at low speed. Fan Operation • Used to circulate room air without cooling. Timer Control • OFF Timer (1, 2, 3,......7 hour) Airflow Direction Control • Airflow direction Auto-swing and Manual Contol. Room Temperature Control • Up: up to 30°C(86.0°F) • Down: down to 16°C(60.8°F) Indoor Fan speed control • High, Med & Low –8–
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Outdoor Unit Deice Control (Heating Model Only) • De-ice PCB Outdoor Fan Speed Control • One speed Sensing Heat Exchanger Temperature • Heat exchanger temperature sensor (Thermistor) –9–
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Product Specifications MODEL LF300CP(LP-C303R20) LF480CE(LP-C483TA0) POWER SOURCE (ø, V, Hz) 1, 208/230, 60 1, 208/230, 60 COOLING CAPACITY BTU/h 28,000 48,000 W 8,206 14,067 INPUT W 2,600 4,500 CURRENT A 11.5 20 HEATING CAPACITY BTU/h -- W -- INPUT W -- CURRENT A -- MAKER LG LG TYPE Rotary Rotary COMPRESSOR MODEL QJ250KAB/QK145KBD QP325KBD * 2 CAPACITY BTU/h 17,658/10,100 24000 CURRENT A 7.7/4.5 10.2 INPUT W 1,635/935 2162 NOISE INDOOR 50/45/39/32 57/54/51 dB(A) LEVEL(1m) OUTDOOR 56 62 AIR INDO
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Dimensions Indoor Unit: LPNC303R20 (LF300CP) Top/Bottom Airflow Controller Left/Right Airflow Controller Cool air outlet(2 sides) by Manual operation Cool air outlet(front side) Top/Bottom Airflow Controller Left/Right Airflow Controller Control Panel Sliding Clean Door Remote Controller Holder Display Panel Antibiotic Filter Plasma Deodorant Air Cleaner Air Inlet Antibiotic Filter Air Inlet Outdoor Unit : LPUC303R20 (LF300CP) Control Cover Air Inlet(back side) Air Outlet Bottom Panel Ground Ter
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Indoor Unit 570mm(22.4inch) 311mm(12.2inch) No. Items 1 Control Display 2 Air outlet vent 3 Air inlet vent Outdoor Unit 546mm(21.5inch) 320mm(12.6inch) 870mm(34.3inch) 3 5 1 2 4 No. Items 1 Gas side service valve (Ø 15.88mm(5/8inch)) 2 Liquid side service valve (Ø 9.52mm(3/8inch)) 3 Fan cover 4 Earth screw 5 Connecting cable hole –12– 1820mm(71.7inch) 95mm 101mm(4.0inch) 101mm(4.0inch) 180mm(7.1inch) 180mm(7.1inch) 340mm(13.4inch) 800mm(31.5inch) 370mm(14.6)
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Indoor Unit : LPNC483TA0 (LF480CE) Air Outlet Vent Remote Signal Receptor Air Intake Vent door Unit : LPUC483TA0 (LF480CE) Air Intake Vent (Rear) Air Outlet Vent Piping –13–
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Indoor Unit 486mm(19.1inch) 439mm(17.3inch) 1 3 2 4 40mm(1.6inch) 40mm(1.6inch) 0mm(1.6inch) 590mm(23.2inch) 4 41mm(1.6inch) 41mm(1.6inch) 1mm(1.6inch) 338mm(13.3inch) No. Items 1Air Outlet Vent 2 Air Inlet Vent 3 Control display 370mm(14.6inch) Outdoor Unit 125mm(4.9inch) 90mm(3.5inch) 460mm(18.1inch) 460mm(18.1inch) 640mm(25.2inch) 130mm(5.1inch) 130mm(5.1inch) 130mm(5.1inch) 900mm(35.4inch) No. Items 1Air Outlet Vent 2 Liquid Side SVC Valve(Ø 9.52mm(3/8inch)) 3 Gas Side SVC Valve(Ø 19.05mm(3
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Wiring Diagram 1. LF300CP(LP-C303R20) Outdoor –15–
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2. LF480CE(LP-C483TA0) Outdoor –16–
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Operation Details 1. Time Delay Safety Control 3min The compressor is ceased for 3 minutes to balance the pressure in the refrigeration cycle. (Protection of compressor) 3sec The indoor fan is ceased for 3 seconds to prevent relay noise. (Protection of fan relay and micro chip) 30sec The 4-way valve is ceased for 30 sec. to prevent the refrigerant-gas abnormal noise when the Heating operation is OFF or switched to the other operation mode. 2. Airflow Direction Control This function is to swing
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5. Heating Mode Operation The unit will operate according to the setting by the remote controller and the operation diagram is shown as following. Intake Air Temp. Setting Temp. +1°C(1.8°F) (Compressor OFF) AA Setting Temp. (Compressor ON) Setting Temp. -1°C(1.8°F) minimum minimum minimum Hot 10sec. 10sec. 10sec. Start minimum 10sec. Selecting Selecting Indoor Fan Speed OFF LOW OFF LOW OFF fan speed fan speed Compressor ON OFF ON OFF • A point: The indoor pipe temperature to be less then
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6. Hot-Start Control • The indoor fan stops until the evaporator piping temperature will be reached to 28°C(82.4°F). • During heating operation, if piping temperatures fall below 26°C(78.8°F) fan stops. • The operation diagram is as following. Maximum 1min INDOOR PIPE TEMP. 28°C(82.4°F) 26°C(78.8°F) INDOOR FAN Selecting OFF LOW OFF SPEED fan speed COMPRESSOR ON 7. Defrost Control • Defrost operation is controlled by timer and sensing temperature of outdoor pipe. • The first defrost starts only w
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8. Soft Dry Operation Mode • During Soft Dry Operation, the compressor ON temperature is the setting temperature plus 2°C(3.6°F), the compressor OFF temperature is the setting temperature minus 1°C(1.8°F). • When the room temperature rises over the compressor ON temperature, the operation mode is switched to the Cooling mode. • When the room temperature falls between the compressor ON temperature and OFF temperature, the operation mode is switched to the Soft Dry Operation. • The operation diagr
