Summary of the content on the page No. 1
Room Air Conditioner
SERVICE MANUAL
MODEL : LSC183VMA
Summary of the content on the page No. 2
Contents Details of 2003 LG Model Name............................................................................................ 3 Functions ................................................................................................................................ 4 Product References .............................................................................................................. 6 Dimensions....................................................................................
Summary of the content on the page No. 3
Details of 2003 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 ➔ 208~230V/60Hz 8 ➔ 380~415V/50
Summary of the content on the page No. 4
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 signals from
Summary of the content on the page No. 5
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 Selection : OFF, O
Summary of the content on the page No. 6
Product References Items Unit LSC183VMA Power Supply ø, V, Hz 1, 208/230, 60 Cooling Capacity BTU/h 18,000/18,000 Input W 1,900/1,900 Running Current A 9.0/9.0 COMP. Locked Rotor AMP. A 47 E.E.R BTU/hW 9.5/9.5 3 Air Circulation m /min(cfm) 11.9(420) Moisture Removal l/h(pts/hr) 2.5(5.3) Noise Level Indoor, High dB(A)±3 45 (Sound Med dB(A)±3 42 Pressure, 1m) Low dB(A)±3 39 Outdoor, Max dB(A)±3 53 Features Temperature Control Thermistor Air Deflection 4-way Steps, Fan/Cool 3/4 Airflow Direction Co
Summary of the content on the page No. 7
Dimensions (1) 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) -7- 522
Summary of the content on the page No. 8
(2) Outdoor Unit (18K) W Gas side 3-way valve Liquid side 3-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) -8- H L4 L3 L2 D L10 L9 L1
Summary of the content on the page No. 9
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 5/8" 1/4" 7.5m(24.6ft) 30m(98.4ft) 5m(16ft) 7m(23ft) (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, 450g of a proper quantity
Summary of the content on the page No. 10
Wiring Diagram (1) Indoor Unit 18K (Cooling Only Models) (2) Outdoor Unit (18K) -10-
Summary of the content on the page No. 11
Operation Details 1. 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 appliance operation, ON
Summary of the content on the page No. 12
• 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 setting temp, the
Summary of the content on the page No. 13
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 ≤ Intake Air Temp
Summary of the content on the page No. 14
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 at that time. 26°C
Summary of the content on the page No. 15
Off-Timer Operation • When the set time is reached after the time is input by the remote control, the appliance stops operating. • The timer LED is on when the off-timer is input. It is off when the time set by the timer is reached. • If the appliance is on pause at the time set by the timer, the pause continues. Off-Timer ↔ On-Timer Operation • When the set time is reached after the on/off time is input by the remote control, the on/off-timer operation is carried out according to the set t
Summary of the content on the page No. 16
Jet Cool Mode Operation (H/P Model) • While in heating mode or Fuzzy operation, the Jet Cool key cannot be input. When it is input while in the other mode operation (cooling, dehumidification, ventilation), the Jet Cool mode is operated. • In the Jet Cool mode, the indoor fan is operated at super-high speed for 60 min at cooling mode operation. • In the Jet Cool mode operation, the room temperature is controlled to the setting temperature, 18°C. • When the sleep timer mode is input while in t
Summary of the content on the page No. 17
Display Function 1. Heating Model 2. Cooling Model Operation Indicator Operation Indicator • Cooling, Soft Dry, Fan, Heating • Cooling, Soft Dry, Fan Sleep Timer Indicator Sleep Timer Indicator • Sleep Mode • Sleep Mode Timer Indicator Timer Indicator • Timer Mode • Timer Mode Defrost Indicator Compressor on Indicator • Hot-start, Defrost Self-diagnosis Function Error Error Display LED Error contents SVC check point Code (Indoor body operation LED) • Indoor room temperature (once) thermi
Summary of the content on the page No. 18
Installation 1. Installation of indoor, Outdoor unit Read completely, then follow step by step. 1) Select the best location Rooftop Installations: 1. Indoor unit If the outdoor unit is installed on a roof structure, be Do not have any heat or steam near the unit. sure to level the unit. Ensure the roof structure and Select a place where there are no obstacles in front anchoring method are adequate for the unit loca- of the unit. tion. Consult local codes regarding rooftop mount- Make
Summary of the content on the page No. 19
3) Preparing work for Installation 1. Open panel front 2. Cover pipe and cover side remove First,Pull the grille bottom, then remove screws(2 Remove two screws(for fixing cover pipe) pieces), and close grille bottom again. Pull up the cover side of desired connecting direc- The moment of lifting the both lower parts of panel tion, then cover side is separated. front, you can hear sound this panel came out, In In case connecting direction is left or right, path this time panel front is
Summary of the content on the page No. 20
4) How to fix installation plate 5) Preparing work for installation The wall you select should be strong and solid enough 1. Drill a hole in the wall to prevent vibration • Drill the piping hole with a ø50mm hole core drill. Drill the piping hole at either the right or the left with Mount the installation plate on the wall with the hole slightly slanted to the outdoor side. A type "A" screws. If mounting the unit on a concrete wall, use anchor bolts. WALL Mount the installation plate horizonta
