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website http://www.lgservice.com
LG
LG
Room Air Conditioner
SERVICE MANUAL
MODELS: LAN181CNW(ASNC183VML3)
LAU181CNW(ASUC183VML3)
LA180CPI (ASNC183VML3)
LA180CPO (ASUC183VML3)
CAUTION
• BEFORE SERVICING THE UNIT, READ THE SAFETY
PRECAUTIONS IN THIS MANUAL.
• ONLY FOR AUTHORIZED SERVICE PERSONNEL.
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Air Conditioner Service Manual TABLE OF CONTENTS Details of 2006 LG Model Name.................................................................................................... 3 Safety Precautions......................................................................................................................... 4 Functions...................................................................................................................................... 10 Product References ...........
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Details of 2006 LG Model Name Details of 2006 LG Model Name 3456789 10 12 - Code Type Code of Model Meaning 1 Producing Center/ A~Z L: ChangWon R22, A: ChangWon R410A, C: ChangWon R407C Refrigerant 2 Type of Air conditioner A~Z S: Split Type Air conditioner 3 Cooling/Heating A~Z C: C/O, H: H/P, X: C/O + E/H, Z: H/P + E/H 4,5 Capacity(Btu/h) 1~9 Cooling/Heating Capacity Ex. "09" ➔ 9,000Btu/h 6 Electric Range 1~9 Electric Standard 1 ➔ 115V/60Hz 6 ➔ 220~240V/50Hz 2 ➔ 220V/60Hz 7 ➔ 110V, 50/60Hz 3 ➔
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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. 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
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Safety Precautions Be cautious when unpacking For installation, always contact Do not install the product on a and installing the product. the dealer or an Authorized Ser- defective installation stand. vice Center. • Shape edges could cause injury. • There is risk of fire, electric • It may cause injury, accident, or Be especially careful of the sharp shock, explosion, or injury. damage to the product. edges. Be sure the installation area Install the indoor unit on the Do not handle the pipe by
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Safety Precautions Do not place a heater or other Do not let the air conditioner run Do not store of use flammable appliances near the power for a long time when the humidi- gas or combustibles near the air cable. ty is very high and a door or a conditioner. window is left open. • There is risk of fire, failure of the • Moisture may condense and wet • There is risk of fire or product fail- product, and/or electric shock. or damage furnishings. ure. Do not use the product in a When flammable gas
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Safety Precautions Ventilate the product from time Unplug the appliance before When the product is not be used to time when operating it togeth- performing cleaning or mainte- for a long time disconnect the er with a stove, etc. nance. power supply plug or turn off the breaker. • There is risk of fire or electrical • There is risk of electric shock. • There is risk of product damage shock. or failure, or unintended opera- tion. Installation Take care to ensure that nobody Do not insert hands o
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Safety Precautions Operation Use two or more people to lift Do not install the product where Do not direct airflow at room and transport the air conditioner it will be exposed to sea wind occupants. (salt spray) directly. • Avoid personal injury. • It may cause corrosion in the • This could damage your health. product. Corrosion, particularly on the condenser and evaporator fins, could cause product mal- function or inefficient operation. Do not use the product for special Do not block the inl
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Safety Precautions Do not drink the water drained Use a firm stool or ladder when Replace all the batteries in the from the unit. cleaning or maintaining the air remote. conditioner. • Be careful and avoid personal • There is risk of fire or explosion. • It is not sanitary and could cause injury. serious health issues. Disuse Do not recharge or disassemble the batteries. Do If the liquid from the batteries gets onto your skin not dispose of batteries in a fire. or clothes, wash it well with cl
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Functions Functions Indoor Unit Operation ON/OFF by Remote controller Sensing the Room Temperature • Room temperature sensor. (THERMISTOR) Room temperature control • Maintains the room temperature in accordance with the Setting Temp. Starting Current Control • Indoor fan is delayed for 5 sec at the starting. Time Delay Safety Control • Restarting is inhibited for approx. 3 minutes. Indoor Fan Speed Control • High, Med, Low, CHAOS Operation indication Lamps (LED) Signal Receptor Receives the sig
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Functions Remote Control Operation ON/OFF Operation Mode Selection Cooling Operation Mode.( ) Auto Operation Mode.( ) (Cooling (Heating model only) Healthy Dehumidification Operation Mode.( ) Heating Operation Mode.( ) model only) Fan Speed Selection (Low) (Med) (High) Room, Temperature Checking : (Low:11°C High:39°C) Temperature Setting TEMPERATURE LOW HIGH Down to 18°C Down to 16°C Cooling Heating Up to 30°C Up to 30°C JET COOL Setting the Time or Timer Timer Selectio
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Product References Product References Items Unit LA*181CNW(AS-C183VML3)/LA180CP* (AS-C183VML3) Power Supply ø, V, Hz 1, 208/230, 60 Cooling Capacity BTU/h 17 800/18 000 Input W 2,000/2,000 Running Current A 9.8/8.9 COMP. Locked Rotor AMP. A 25*2 S.E.E.R 13 3 Air Circulation m /min(cfm) 13(460) Moisture Removal l/h(pts/hr) 2.5(5.3) Noise Level Indoor, High dB(A)±3 44 (Sound Med dB(A)±3 40 Pressure, 1m) Low dB(A)±3 36 Outdoor, Max dB(A)±3 55 Features Temperature Control Thermistor Air Deflection 4
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Dimensions Dimensions Indoor Unit 928 147 Pipe Hole Fix Hole MODEL Indoor Unit DIM Unit W mm(inch) 928(36.5) H mm(inch) 522(20.6) D mm(inch) 147(5.8) Service Manual 13 522
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Dimensions Outdoor Unit W Gas side 3-way valve Liquid side 2-way valve L6 L5 L7 L8 MODEL OUTDOOR UNIT DIM W mm(inch) 870(34.3) H mm(inch) 655(25.8) D mm(inch) 320(12.6) L1 mm(inch) 370(14.6) L2 mm(inch) 25(1.0) L3 mm(inch) 630(24.8) L4 mm(inch) 25(1.0) L5 mm(inch) 546(21.5) L6 mm(inch) 162(6.4) L7 mm(inch) 162(6.4) L8 mm(inch) 54(2.1) L9 mm(inch) 74.5(2.9) L10 mm(inch) 79(3.1) 14 Room Air Conditioner H L4 L3 L2 D L10 L9 L1
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Refrigeration Cycle Diagram Refrigeration Cycle Diagram Cooling Only Models INDOOR UNIT OUTDOOR UNIT LIQUID SIDE CAPILLARY TUBE HEAT EXCHANGER HEAT (EVAPORATOR) EXCHANGER (CONDENSER) COMPRESSOR GAS SIDE Pipe size(Diameter:ø) Piping length Elevation MODEL Gas Liquid Rated Max Rated Max 18K 1/2" 1/4" 7.5m(24.6ft) 30m(98.4ft) 5m(16ft) 15m(49ft) (Cooling Only) For installation over rated, *a proper quantity of refrigerant should be added for each meter. Ex) 18K: When installed at a distance of 30m,
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Wiring Diagram Wiring Diagram Indoor Unit 18K (Cooling Only Models) Outdoor Unit 16 Room Air Conditioner
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Operation Details Operation Details MAIN UNIT FUNCTION • DISPLAY 1) C/O Model Operation Indicator • ON while in appliance operation, OFF while in appliance pause. • Flashing while in disconnection or short in Thermistor. (3 sec off / 0.5 sec on) Sleep Timer Indicator • ON while in sleep timer mode, OFF when sleep timer cancel or appliance operation pause. Timer Indicator • ON while in timer mode (on/off), OFF when timer mode is completed or canceled. Comp. Running Incidator • While in applianc
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Operation Details • While in compressor off, the indoor fan repeats low airflow speed and pause. • While the intake air temp is between compressor on temp. and compressor off temp., 10-min dehumidifica- tion operation and 4-min compressor off repeat. Compressor ON Temp. ➲ Setting Temp+0.5°C Compressor OFF Temp. ➲ Setting Temp-0.5°C • In 10-min dehumidification operation, the indoor fan operates with the low airflow speed. Heating Mode Operation • When the intake air temp reaches +3°…above the
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Operation Details Fuzzy Operation (C/O Model) • According to the temperature set by Fuzzy rule, when the intake air temp is 0.5°C or more below the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor is turned on. Compressor ON Temp ➲ Setting Temp + 0.5°C Compressor OFF Temp ➲ Setting Temp + 0.5°C • At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp at that time. 26°C ≤
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Operation Details 2) Fuzzy Operation for Dehumidification • According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more below the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the compressor is turned on. Compressor ON Temp ➲ Setting Temp + 0.5°C Compressor OFF Temp ➲ Setting Temp+0.5°C • At the beginning of Fuzzy mode operation, the setting temperature is automatically selected according to the intake air temp
