Service Manual
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website http://www.lgservice.com e-mail http://www.lgeservice.com/techsup.html LG LG Ceiling Cassette Air Conditioner SERVICE MANUAL MODEL: LCN240CP/LCU240CP LC240CPI/LC240CPO LCN340CP/LCU340CP LC340CPI/LC340CPO CAUTION • BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. • ONLY FOR AUTHORIZED SERVICE PERSONNEL.
website http://www.lgservice.com e-mail http://www.lgeservice.com/techsup.html LG LG Ceiling Cassette Air Conditioner SERVICE MANUAL MODEL: LCN240CP/LCU240CP LC240CPI/LC240CPO LCN340CP/LCU340CP LC340CPI/LC340CPO CAUTION • BEFORE SERVICING THE UNIT, READ THE SAFETY PRECAUTIONS IN THIS MANUAL. • ONLY FOR AUTHORIZED SERVICE PERSONNEL.
Service Manual
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List of Remote Control 12 6. Wiring Diagrams...19 9. Function of Functions ...11 5. Refrigerant Cycle Diagrams 21 10. TABLE OF CONTENTS Table of contents Page 1. Specifications ...14 7. Feature & Benefits ...8 4. Dimensional Drawings 16 8. Electronic Control Device 52 14. Exploded View and Replacement Parts List 53 2 Ceiling Cassette Air Conditioner Installation ...22 11. Safety Precautions ...4 3. Models List ...3 2. Trouble Shooting Guide 32 12. (3-Way)Valve ...48 13.
List of Remote Control 12 6. Wiring Diagrams...19 9. Function of Functions ...11 5. Refrigerant Cycle Diagrams 21 10. TABLE OF CONTENTS Table of contents Page 1. Specifications ...14 7. Feature & Benefits ...8 4. Dimensional Drawings 16 8. Electronic Control Device 52 14. Exploded View and Replacement Parts List 53 2 Ceiling Cassette Air Conditioner Installation ...22 11. Safety Precautions ...4 3. Models List ...3 2. Trouble Shooting Guide 32 12. (3-Way)Valve ...48 13.
Service Manual
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... 1.1 Indoor units Category Type Chassis Ceiling cassette 4-way TH Models List 7.03(24) Model names Capacity, kW(kBtu/h) AT-C243HLF0 9.96(34) AT-C343HLF0 1.2 Outdoor units Cooling only No. of connectable indoor units Total capacity ...connectable indoor units Power supply kW kBtu /h Chassis AT-C243HLF0 AT-C343HLF0 1 7.03 9.96 24 34 1Ø, 208-230V, 60Hz ❈ Local model name Factory AT-C243HLF0 AT-C343HLF0 Local Model 1 Indoor Outdoor LCN240CP LCU240CP LCN340CP LCU340CP Local Model 2 Indoor Outdoor LC240CPI LC240CPO LC340CPI LC340CPO Service Manual...
... 1.1 Indoor units Category Type Chassis Ceiling cassette 4-way TH Models List 7.03(24) Model names Capacity, kW(kBtu/h) AT-C243HLF0 9.96(34) AT-C343HLF0 1.2 Outdoor units Cooling only No. of connectable indoor units Total capacity ...connectable indoor units Power supply kW kBtu /h Chassis AT-C243HLF0 AT-C343HLF0 1 7.03 9.96 24 34 1Ø, 208-230V, 60Hz ❈ Local model name Factory AT-C243HLF0 AT-C343HLF0 Local Model 1 Indoor Outdoor LCN240CP LCU240CP LCN340CP LCU340CP Local Model 2 Indoor Outdoor LC240CPI LC240CPO LC340CPI LC340CPO Service Manual...
Service Manual
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..., supplied with main unit. Service Manual 11 Note : O : Applied, X : Not applied, - : No relation Option: Model name & price are different according to options, and assembled in factory with separate package. control Electric heater (Operation) High ceiling operation Hot start Self diagnosis ...
..., supplied with main unit. Service Manual 11 Note : O : Applied, X : Not applied, - : No relation Option: Model name & price are different according to options, and assembled in factory with separate package. control Electric heater (Operation) High ceiling operation Hot start Self diagnosis ...
Service Manual
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....4/17.0/15.6 24.1/22.7/21.2 cfm 650/600/550 850/800/750 Capacitor mF/V - - Specifications Specifications Indoor unit type Ceilling Cassette - 4way Model AT-C243HLF0 (LCN240CP / LC240CPI) AT-C343HLF0 (LCN340CP / LC340CPI) Power supply Phase/Volts/Hz 1 / 208-230 / 60 1 / 208-230 / 60 Cooling capacity kW 7.03 9.96 Btu/h 24,000 34,000...
....4/17.0/15.6 24.1/22.7/21.2 cfm 650/600/550 850/800/750 Capacitor mF/V - - Specifications Specifications Indoor unit type Ceilling Cassette - 4way Model AT-C243HLF0 (LCN240CP / LC240CPI) AT-C343HLF0 (LCN340CP / LC340CPI) Power supply Phase/Volts/Hz 1 / 208-230 / 60 1 / 208-230 / 60 Cooling capacity kW 7.03 9.96 Btu/h 24,000 34,000...
Service Manual
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... supply Phase / Volts / Hz Power supply Cable(outdoor) No. * mm2(No. Interconnecting Piping Length 7.5m(25ft) - Level Difference of connectable unit Compressor Type (constant) Qty * model Motor Type Oil charge volume cc Oil type Refrigerant Charge(at 7.5m(25ft)) g(oz) Type Control Heat Exchanger Rows * Column * FPI Defrosting method Fan Capacitor...
... supply Phase / Volts / Hz Power supply Cable(outdoor) No. * mm2(No. Interconnecting Piping Length 7.5m(25ft) - Level Difference of connectable unit Compressor Type (constant) Qty * model Motor Type Oil charge volume cc Oil type Refrigerant Charge(at 7.5m(25ft)) g(oz) Type Control Heat Exchanger Rows * Column * FPI Defrosting method Fan Capacitor...
Service Manual
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Cooling Only Models INDOOR UNIT OUTDOOR UNIT Refrigerant Cycle Diagrams Capillary Tube H/EX Gas Side Thermistor Accumulator Check Valve High pressure S/W Thermistor Check Valve Thermistor (Air) Heat Exchanger Constant Compressor 1 Constant Compressor 2 GAS SIDE LIQUID SIDE E.E.V. Thermistor Capacity 24k 34k Pipe Size(Diameter:Ø) inch Gas Liquid 1/4 1/2 1/4 5/8 Piping length (ft.) Rated Max. 25 100 115 Elevation (ft.) Rated Max. 16 50 16 66 Additional Refrigerant (oz/ft) 0.22 0.32 Service Manual 21 Refrigerant Cycle Diagrams 1.
Cooling Only Models INDOOR UNIT OUTDOOR UNIT Refrigerant Cycle Diagrams Capillary Tube H/EX Gas Side Thermistor Accumulator Check Valve High pressure S/W Thermistor Check Valve Thermistor (Air) Heat Exchanger Constant Compressor 1 Constant Compressor 2 GAS SIDE LIQUID SIDE E.E.V. Thermistor Capacity 24k 34k Pipe Size(Diameter:Ø) inch Gas Liquid 1/4 1/2 1/4 5/8 Piping length (ft.) Rated Max. 25 100 115 Elevation (ft.) Rated Max. 16 50 16 66 Additional Refrigerant (oz/ft) 0.22 0.32 Service Manual 21 Refrigerant Cycle Diagrams 1.
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...(accessory) Ceiling board Ceiling Air Conditioner body Ceiling board Flat washer for M10 (accessory) Nut (W3/8 or M10) Paper model for installation Adjust the same height Set screw of paper model (4 pieces) Open the ceiling board along the outer edge of the unit is option. W 3/8 or M10 Spring Washer -...secure the unit with a nail or wire assuming the influence of wind and earthquake. • In the case when the vibration of the paper model • The following parts is conveyed to the outdoor side using a Ø 70(2.76inch) hole-core drill. M10 CAUTION • Tighten the...
...(accessory) Ceiling board Ceiling Air Conditioner body Ceiling board Flat washer for M10 (accessory) Nut (W3/8 or M10) Paper model for installation Adjust the same height Set screw of paper model (4 pieces) Open the ceiling board along the outer edge of the unit is option. W 3/8 or M10 Spring Washer -...secure the unit with a nail or wire assuming the influence of wind and earthquake. • In the case when the vibration of the paper model • The following parts is conveyed to the outdoor side using a Ø 70(2.76inch) hole-core drill. M10 CAUTION • Tighten the...
Service Manual
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... occurrence of error code, be sure to turn off the power and then turn on. • Having or not of error code is different from Model. D-Pipe Thermistor Error(Open/Short) 51 Capcity Error(High/Low) 53 Signal Error(Indoor_Outdoor) 54 Phase Error 60 EEPROM Check Sum Error 61 Cond Pipe...
... occurrence of error code, be sure to turn off the power and then turn on. • Having or not of error code is different from Model. D-Pipe Thermistor Error(Open/Short) 51 Capcity Error(High/Low) 53 Signal Error(Indoor_Outdoor) 54 Phase Error 60 EEPROM Check Sum Error 61 Cond Pipe...
Service Manual
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Indoor Unit Model No.: LCN240CP/LCN340CP 267110-1 349480 249951 135500 337000 354211 352118 158591 Eva-in 263230-1 Eva-out 263230-2 267110-2 130412 349600 346810 359012 268714 130911-3 130911-4 W49810 130911-2 152510 130911-1 552111 330870 159830 266090 The model name of Front Panel for this model is "PT-CDC1" (Refer to 59 page) Service Manual 53 Exploded View and Replacement Parts List Exploded View and Replacement Parts List 1.
Indoor Unit Model No.: LCN240CP/LCN340CP 267110-1 349480 249951 135500 337000 354211 352118 158591 Eva-in 263230-1 Eva-out 263230-2 267110-2 130412 349600 346810 359012 268714 130911-3 130911-4 W49810 130911-2 152510 130911-1 552111 330870 159830 266090 The model name of Front Panel for this model is "PT-CDC1" (Refer to 59 page) Service Manual 53 Exploded View and Replacement Parts List Exploded View and Replacement Parts List 1.