Related Manuals for LG LT-E1820CL
Summary of Contents for LG LT-E1820CL
- Page 1 Библиотека СОК Ceiling Cassette Air Conditioner SERVICE MANUAL MODELS: LT-E1820CL/LT-E1820HL LT-E1860CL/LT-E1860HL LT-E1862HL LT-E2460CL/LT-E2460HL LT-E2462HL...
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Page 2: Table Of Contents
Contents Functions ..........................3 Product Specifications (Cooling & Heating) ................5 Dimensions ..........................7 Refrigeration Cycle Diagram ....................9 Wiring Diagram ........................11 Operation Details ........................12 Installation of Indoor, Outdoor Unit ..................13 3-way Valve ..........................31 Cycle Troubleshooting Guide ....................36 Electronic Parts Troubleshooting Guide ................37 Electronic Control Device .....................40 Schematic Diagram .......................41 Exploded View and Replacement Parts List ...............42 –2–... -
Page 3: 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. • Indoor fan is delayed for 5 seconds at the starting. Starting Current Control Time Delay Safety Control •... - Page 4 Remote Controller Operation ON/OFF Operation Mode Selection Cooling Operation Mode ( Soft Dry Operation Mode ( Heating Operation Mode ( Auto Operation Mode ( (Cooling (Heating model only) model only) Fan Speed Selection AUTO (Low) (Med) (High) Room Temperature Display : High:39°C ↔...
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Page 5: Product Specifications (Cooling & Heating)
Product Specifications (Cooling & Heating) Model LT-E1860CL LT-E1860HL LT-E1862HL LT-E1820CL LT-E1820HL 1, 220-240, 50 1, 220-240, 50 1, 220-240, 50 1, 220, 60 1, 220, 60 Power Supply ø, V, Hz 4,536(5,274) 4,536(5,274) 4,536(5,274) 4,536(5,274) 4,536(5,274) Capacity Cooling kcal/h(W) 18,000... - Page 6 Model LT-E2460CL LT-E2460HL LT-E2462HL Power Supply ø, V, Hz 1, 220-240, 50 1, 220-240, 50 1, 220-240, 50 5,871(6,827) 5,871(6,827) 5,871(6,827) Capacity Cooling kcal/h(W) Btu/h 23,300 23,300 23,300 5,922(6,886) 5,922(6,886) Heating kcal/h(W) 23,500 23,500 Btu/h 2,600 2,600 2,600 Input Cooling 2,600 2,600 Heating...
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Page 7: Dimensions
Dimensions (1) Indoor Unit CLOSE OPEN OPEN CLOSE –7–... - Page 8 (2) Outdoor Unit Gas side 3-way valve Liquid side 3-way valve MODEL All Models 74.5 –8–...
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Page 9: Refrigeration Cycle Diagram
Refrigeration Cycle Diagram • HEAT PUMP INDOOR UNIT OUTDOOR UNIT CAPI A ACCUM. H/EX VALVE REVERSING Liquid Side Liquid Side Gas Side H/EX CAPI C1 Heating Cooring CAPI C2 COMPRESSOR Liquid Side Gas Side Gas Side CAPI B Elevation (m) * Additional Pipe Size Length (m) - Page 10 • COOLING ONLY INDOOR UNIT OUTDOOR UNIT CAPI A H/EX COMPRESSOR Gas Side Gas Side Gas Side ACCUM. H/EX CAPI C1 CAPI C2 Liquid Side Liquid Side Liquid Side CAPI B Elevation (m) * Additional Pipe Size Length (m) refrigerant Capacity (g/m) Max.
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Page 11: Wiring Diagram
Wiring Diagram • HEAT PUMP Model No.: LT-E1860HL/ LT-E1862HL/ LT-E2460HL/ LT-E2462HL OUTDOOR WIRING DIAGRAM INDOOR WIRING DIAGRAM CAPACITOR COMP MOTOR INDOOR DRAIN STEP MOTOR PUMP MOTOR POWER FUSE T3.15A RELAY REVERSING PIPE THERMISTOR VALVE GN/YL FLOAT S/W REMOTE CN - DISP CONTROL TERMINAL TERMINAL... -
Page 12: Operation Details
Operation Details (1) The function of main control 1. Time Delay Safety Control • 3min The compressor is ceased for 3minutes to balance the pressure in the refrigeration cycle. (Protection of compressor) • 5sec Vertical air flow direction control louvers open in 5 seconds to prevent noise between louvers and wind. •... - Page 13 6. Heating Mode Operation (Except Cooling Model) The unit will operate according to the setting by the remote controller and the operation diagram is shown as following. Intake Air temp. minimum 3min Setting temp.+3°C (Compressor OFF) Setting temp. (Compressor ON) minimum minimum minimum...
- Page 14 8. Defrost Control • Defrost operation is controlled by timer and sensing the indoor piping temperature. • The defrost starts only when the outdoor pipe temperature falls below -6°C after 45 minutes passed from starting of heating operation. • Defrost ends after 9 minutes 30 seconds passed from starting of defrost operation or when the outdoor pipe temperature rises over 12°C even if before 12 minutes.
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Page 15: Installation Of Indoor, Outdoor Unit
Installation of Indoor, Outdoor Unit 1. Selection of the best location 1) Indoor unit • There should not be any heat source or steam near the unit. • There should not be any obstacles to prevent the air circulation. • A place where air circulation in the room will be Ceiling Ceiling Board good. - Page 16 2. Ceiling opening dimensions and hanging bolt location • The dimensions of the paper model for installing are 600 (Ceiling opening) the same as those of the ceiling opening dimen- sions. 521(Hanging bolt) 39.5 39.5 Ceiling 570 Unit size Level gauge CAUTION Unit:mm •...
- Page 17 3. The Indoor Unit Installation Ceiling Keep the length of the bolt Hanging bolt from the bracket to 40mm (W3/8 or M10) Flat washer for M10 Air Conditioner body (W3/8 or M10) (accessory) Ceiling board Ceiling board Spring washer (M10) Flat washer for M10 (accessory) Set screw of...
- Page 18 WIRED REMOTE CONTROL INSTALLATION DISASSEMBLING • Separate the under plate from Remote control box. Front case Lever carefully Remote control the box open box body using a screw • Fix the cord clamps on the wall by ø 3 tapping driver, etc.
- Page 19 5. Wiring Connection • Open the control box cover and connect the Remote controller cord and Indoor power wires. Indoor power cord Control box cover Remote [Air inlet side view] controller cord Control box cover fitting screw(2 units) Terminal Block of Indoor Unit Terminal Block of Outdoor Unit •...
- Page 20 ELECTRICAL WIRING 1. All wiring must comply with LOCAL REGULATIONS. 2. Select a power source that is capable of supplying the current required by the air conditioner. 3. Feed the power source to the unit via a distribution switch board designed for this purpose. 4.
- Page 21 6. Connecting Pipes to the Indoor Unit • Preparation of Piping Main cause of gas leakage is defect in flaring work. Carry out correct flaring work in the following procedure. 1) Cut the pipes and the cable. Use the accessory piping kit or the pipes purchased Copper locally.
- Page 22 Piping Connection 1. Form the piping according to its routing. Avoid bend- ing and bending back the same piping point more Liquid side than three times. (This will result in hardening the pipe.) Indoor 2. After deforming the piping, align centers of the union unit fitting of the indoor unit and the piping, and tighten Outdoor...
- Page 23 7. Installation of Decorative Panel The decorative panel has its installation Before installing the decorative panel, direction. always remove the paper template. 1. Temporarily fix two decorative panel fixing screws (hexagon M5 screw) on the unit body. (Tighten by amount 10mm in length.) The fixing screws (hexagon M5 screw) are included the indoor unit box.
- Page 24 CAUTION Install certainly the decorative panel. Cool air leakage causes sweating. Water drops fall. Good example Bad example Air conditioner unit Air conditioner Cool air leakage unit (no good) Ceiling Ceiling board board Decorative Decorative panel panel Fit the insulator (this part) and be careful for cool air leakage 8.
- Page 25 HEAT INSULATION 1. Use the heat insulation material for the refrigerant piping which has an excellent heat-resistance (over 120°C). Fastening band 2. Precautions in high humidity circumstance: (accessory) This air conditioner has been tested according to the "KS Standard Conditions with Mist" and confirmed that there is not any default.
- Page 26 Seal a small opening In case of the Outdoor Unit being installed around the pipings above position of the Indoor Unit. with gum type sealer. Trap 2. Tape the Pipings and Connecting cable from bot- tom to top. 3. Form the pipings gathered by taping along the exterior wall, and make the trap prevent water from entering into the room.
- Page 27 2) Connection of power supply 1. Connect the power supply cord to the independent power supply. • Circuit breaker is required. 2. Operate the unit for fifteen minutes or more. 3) Evaluation of the performance 1. Measure the temperature of the intake and dis- charge air.
- Page 28 Optional Operation 1) Two Thermistor System (1) Open the rear cover of the wired remote-controller to set the mode. (2) Select one of three selectable modes as follows. • Position 1: The room temperature is controlled by the thermistor of the main body. •...
- Page 29 2) Adjusting air volume to the height of ceiling You can choose the RPM(or air volume) of indoor motor according to the height of ceiling to supply the com- fortable atmosphere to consumers. Procedure 1. Choose the selectable position in the table after measuring the height of ceiling. Ceiling height Mode of slide switch Change of air volume...
- Page 30 3) Group Control(Optional Wiring) • You can use a group control operation after connecting the brown and yellow wire of each air-conditioner. • Remove the resistor "OP 7" in remote controller. • It operates maximum 16 Units by only one Wired Remote Controller, and each Unit starts sequentially to prevent overcurrent.
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Page 31: 3-Way Valve
3-way Valve 1. Pumping down Liquid side Indoor unit Open Outdoor unit 3-Way valve Gas side Closed 3-Way valve CLOSE CLOSE Purge the air • Procedure (6) Operate the air conditioner in cooling mode (1) Confirm that both liquid side and gas side and stop it when the gaug e indicates valves are set to the open position. - Page 32 1) Re-air purging (Re-installation) Liquid side Indoor unit Closed Outdoor unit 2-Way valve Gas side Closed 3-Way valve Gas cylinder OPEN CLOSE • Procedure (6) Disconnect the charge set and the gas (1) Confirm that both the liquid side valve and the cylinder, and set the 2-way and 3-way valves gas side valve are set to the closed position.
- Page 33 2) Balance refrigerant of the 3-way valve (Gas leakage) Liquid side Indoor unit Outdoor unit 2-Way valve Open Gas side 3-Way valve Open OPEN CLOSE • Procedure (1) Confirm that both the liquid side and gas side (3) Open the valve (Lo side) on the charge set valves are set to the back seat.
- Page 34 2. Evacuation (All amount of refrigerant leaked) Liquid side Indoor unit Outdoor unit 2-Way valve Open Gas side 3-Way valve Open Vacuum pump OPEN CLOSE • Procedure (1) Connect the vacuum pump to the center hose (3) Close the valve (Lo side) on the charge set, of charge set center hose turn off the vacuum pump, and confirm that the gauge needle does not move (approxima-...
- Page 35 3. Gas Charging (After Evacuation) Liquid side Indoor unit Open Outdoor unit 2-Way valve Gas side Open 3-Way valve Check valve Charging cylinder OPEN CLOSE • Procedure (1) Connect the charge hose to the charging This is different from previous procedures. cylinder.
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Page 36: Cycle Troubleshooting Guide
Cycle Troubleshooting Guide Trouble analysis 1. Check temperature difference between intake and discharge air and operating current. Temp. difference : approx. 0°C All amount of refrigerant leaked out Current : less than 80% of Check refrigeration cycle rated current Temp. Difference Refrigerant leakege Temp. -
Page 37: Electronic Parts Troubleshooting Guide
Electronic Parts Troubleshooting Guide Possible Trouble 1 : The unit does not operate. Check the FUSE Is the input voltage and the wiring diagram. of transformer AC230V? Is the input voltage Check the main P.C.B of IC03D about DC12V? pattern. Is the output voltage Exchange IC03D. - Page 38 Possible Trouble 2 : The indoor fan does not operate. Is it the HOT It is normal operation. START mode? Is IC01M operated Exchange IC01M. normally? Is the each Relay Exchange Relay. any problem? Check the fan motor and connector.(CN-MOTOR) Possible Trouble 3 : Ineffective Heating Adjust operation mode.
- Page 39 Possible Trouble 4 : Auto Air direction louver does not operate. Is IC01M operated Exchange IC01M. normally? Check the motor and connector. (CN-LOUVER) : Wired remote controller does not operate. Possible Trouble 5 Check the parts of Is the LCD operated communication.
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Page 40: Electronic Control Device
Electronic control device MAIN P.C.B ASM –40–... -
Page 41: Schematic Diagram
Schematic Diagram –41–... -
Page 42: Exploded View And Replacement Parts List
Exploded View and Replacement Parts List 1. Indoor Unit 266090 249951 268714 159830 354212 35211A 352118 263230 158591 266012 330870 –42–... - Page 43 130411 W0CZZ 346810 359011 146811 268712 140570 159830 135802 135312-2 135312-1 130911 352150 267110 267110 352150 –43–...
- Page 44 Replacement parts list Model: LT-E1860CL/LT-E1860HL/ LT-E1862HL/ LT-E1820CL/ LT-E1820HL/ LT-E2460CL/ LT-E2460HL/ LT-E2462HL PART NO. LOCATION DESCRIPTION MARK LT-E1860CL LT-E1860HL LT-E1862HL LT-E2460CL LT-E2460HL LT-E2462HL LT-E1820CL LT-E1820HL 354212 EVEPORATOR ASSY 5421A10007A 5421A10007B 5421A10007A 35211A TUBE ASSY, SUCTION 5211A20243A 5211A20243B 5211A20243A 352118 TUBE ASSY, MENIFOLD...
- Page 45 2. Outdoor Unit –45–...
- Page 46 • Parts List Model: LT-E1860CL/LT-E1860HL/ LT-E1862HL/ LT-E1820CL/ LT-E1820HL/ LT-E2460CL/ LT-E2460HL/ LT-E2462HL PART NO. LOCATION DESCRIPTION MARK LT-E1860CL LT-E1860HL LT-E1862HL LT-E2460CL LT-E2460HL LT-E2462HL LT-E1820CL LT-E1820HL 430410 BASE ASSY, WELD(OUTDOOR) 3041A30003U 3041A30003K 3041A30003E 3041A30003F 435512 COVER ASSY, TOP(OUTDOOR) 3H03266N 3H03266J 3H03266K 437210 PANEL ASSY, FRONT(OUTDOOR)
- Page 47 December, 2000 February, 2001 Printed in Korea P/No.: 3828A30023K Printed in Korea P/No.: 3828A20048D...