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LG LB-E608HL Service Manual

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LB-E608HL
MODEL
SERVICE MANUAL

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Summary of Contents for LG LB-E608HL

  • Page 1 LB-E608HL MODEL SERVICE MANUAL...
  • Page 2 August, 1999 P/No.: 3828A30014U Printed in Korea...
  • Page 3 Functions Indoor Unit Operation ON/OFF by Remote controller Sensing the Room Temperature ƒURoom temperature sensor. (Thermistor) Room temperature control ƒUMaintains the room temperature in accordance with the Setting Temp. Starting Current Control ƒUIndoor fan is delayed for 5 seconds at the starting. Time Delay Safety Control ƒURestarting is inhibited for approx.

  • Page 4: Remote Controller

    Remote Controller Operation ON/OFF Operation Mode Selection Cooling Operation Mode ( Soft Dry Operation Mode ( Heating Operation Mode ( (Cooling (Heating model only) model only) Fan Speed Selection (Low) (Med) (High) Room Temperature Display : High:39°C ¡ŒLOW:11°C Temperature Setting Down to 18°C Down to 16°C Cooling...

  • Page 5: Product Specifications (Cooling & Heating)

    Product Specifications (Cooling & Heating) LB-E6080HL Model Name Volt 380-415V Item Unit 57,000 (16,700) Cooling Capacity Btu/h(W) 60,000 (17,580) Heating Capacity Btu/h(W) Moisture Removal §⁄ /h 3ø,380-415V~, 50Hz Power Source §j, V, Hz Indoor Air Circulation /min Outdoor 7,500 Input Cooling 6,000 Heating...
  • Page 6 Dimensions MODEL:LB-E6080HL Indoor Unit 1230 Outdoor Unit 1220 –6–...

  • Page 7: Refrigeration Cycle Diagram

    Refrigeration Cycle Diagram • MODEL: LB-E6080HL INDOOR UNIT OUTDOOR UNIT LIQUID SIDE CAPILLARY TUBE CHECK VALVE HEAT HEAT EXCHANGER EXCHANGER GAS SIDE REVERSING VALVE COOLING COMPRESSOR HEATING Pipe size(Diameter: ø) Piping length(m) Elevation(m) Additional refrigerant MODEL (g/m) Liquid Rated Max. Rated Max.

  • Page 8: Wiring Diagram

    Wiring Diagram MODEL: LB-E6080HL • Indoor Unit INDOOR ELECTRIC CIRCUIT OUTDOOR UNIT INDOOR UNIT GN/YL C TH Remo. 52F1 S T N Hi Med Low T/B1 3fl, 380-415V, 50Hz CN-REMO T/B2 POWER SUPPLY CN-TRANS1 CN-MOTOR CN-OUT CN-POWER TRANS 20SV YL BK YL BK CN-TH CN-TRANS2...

  • Page 9: Operation Details

    Operation Details (1) The function of main control 1. Time Delay safety Control • 3min¡ƒ The compressor is ceased for 3minutes to balance the pressure in the refrigeration cycle. (Protection of compressor) • 30sec¡ƒThe 4-way valve is ceased for 30sec. to prevent the refrigerant-gas abnormal noise when the Heating operation is OFF or switched to the other operation mode while compress is off.

  • Page 10: Hot-Start Control

    4. 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 11: Defrost Control

    6. Defrost Control • Defrost operation is controlled by timer and sensing the outdoor 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.

  • Page 12: Installation Of Indoor, Outdoor Unit

    Installation of Indoor, Outdoor Unit 1. Selection of the best location 1) Indoor unit Top view (unit: mm) Select location Inspection hole Install the air conditioner in the location that satis- (600X600) fies the following conditions. Control box • The place shall easily bear a load exceeding four times the indoor unit’s weight.

  • Page 13: Piping Length And The Elevation

    3) Piping length and the elevation Indoor unit Pipe Size * Additional Length A(m) Elevation B(m) (Diameter: Ø) MODEL refrigerant (g/m) Liquid Standard Max. Max. Standard 60K BTU 3/4" 1/2" Outdoor unit • If 60K Model is installed at a distance of 15m, 525g of refrigerant should be added (15-7.5) x 70g = 525g •...

  • Page 14: Position Of Suspension Bolt

    2. Ceiling dimensions and hanging bolt location Installation of Unit Install the unit above the ceiling correctly. CASE 1 POSITION OF SUSPENSION BOLT • Apply a joint-canvas between the unit and duct to absorb unnecessary vibration. • Apply a filter Accessory at air return hole. (Unit:mm) Dimension Capacity...

  • Page 15: The Indoor Unit Installation

    3. The Indoor Unit Installation • Select and mark the position for fixing bolts. • Drill the hole for set anchor on the face of ceiling. • Insert the set anchor and washer onto the sus- pension bolts for locking the suspension bolts on the ceiling.

  • Page 16: Remote Controller Installation

    4. Remote Controller Installation • Although the room temperature sensor is in the indoor unit, the remote control box should be installed in such places away from direct sunlight and high humidity. Installation of the remote control box • Select places that are not splashed with water. •...
  • Page 17 5. Connecting Cables between Indoor Unit and Outdoor Unit 1) Connecting cables to the Indoor Unit Connect the wires to the terminals on the control board individually according to the outdoor unit connection. • Ensure that the color of the wires of outdoor unit and the terminal No. are the same as those of indoor unit respectively 60K Btu Terminals on the indoor unit...

  • Page 18: Electrical Wiring

    Perform the electrical wiring work according to the electrical wiring ELECTRICAL WIRING connection. • All wiring must comply with local requirements. Circuit Breaker • Select a power source that is capable of supply- Use a 35A(60K) circuit breaker or time ing the current required by the air conditioner.

  • Page 19: Connecting Pipes To The Indoor Unit

    6. Connecting Pipes to the Indoor Unit • Preparation of Piping Main cause of gas leakage is defect in flaring Copper Slanted Uneven Rough work. Carry out correct flaring work in the following tube 90° procedure. 1) Cut the pipes and the cable. Use the accessory piping kit or the pipes pur- chased locally.

  • Page 20: Piping Connection

    Piping Connection 1. Form the piping according to its routing. Avoid Liquid side bending and bending back the same piping point more than three times. (This will result in hard- ening the pipe.) Indoor unit 2. After deforming the piping, align centers of the union fitting of the indoor unit and the piping, and Outdoor Flare connection...
  • Page 21 CAUTION 1. Install declination of the indoor unit is very important for the drain of the duct type air conditioner. 2. Minimum thickness of the insulation for the connecting pipe shall be 5mm. Front of view • The unit must be horizontal or declined to the drain hose connected when finished installation. Ceiling CORRECT INCORRECT...

  • Page 22: Insulation, Others

    • Drill the piping hole with 70mm dia, hole WALL core drill. Indoor Outdoor • Piping hole should be slightly slant to the outdoor side. 5~7mm INSULATION, OTHERS Insulate the joint and tubes completely. THERMAL INSULATION All thermal insulation must comply with local requirement. INDOOR UNIT Union for liquid pipe Thermal insulator for refrigerant pipe...

  • Page 23: Form The Pipings

    FORM THE PIPINGS Seal a small opening Seal a small opening 1. Wrap the connecting portion of indoor unit with around the pipings around the pipings the Insulation material and secure it with two with gum type sealer. with gum type sealer. Plastic Bands.

  • Page 24: Connection Of Power Supply

    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 discharge air. 2.

  • Page 25: Way Valve

    3-way Valve 1. Pump 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 gauge indicates valves are set to the open position.
  • Page 26 1) Re-air purging (Re-installation) Liquid side Indoor unit Closed Outdoor unit 3-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 27 2) Balance refrigerant of the 3-way valve (Gas leakage) Liquid side Indoor unit Outdoor unit 3-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 28: Vacuum Pump

    2. Evacuation (All amount of refrigerant leaked) Liquid side Indoor unit Outdoor unit 3-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 29: Gas Charging

    3. Gas Charging (After Evacuation) Liquid side Indoor unit Outdoor unit Open 3-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.

  • Page 30: Trouble Analysis

    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 31 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 AC220V? Is the output voltage Is shorted the Check the main P.C.B of transformer about AC14V? transformer output? pattern Exchange...
  • Page 32 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 : Wired remote controller does not operate.
  • Page 33 Possible Trouble 4 : Ineffective Heating Adjust operation mode. Is it Heating Mode? Does the temperature Adjust set temperature set all right? Is IC01M operated Change IC01M. normally? Is 4way-valve operated? Check RY-4Way Check the connector (CN-OUT, CN-AC1.2) –33–...

  • Page 34: Electronic Control Device

    Electronic control device • MAIN P.C.B ASM –34–...

  • Page 35: Schematic Diagram

    Schematic Diagram –35–...

  • Page 36: Exploded View And Replacement Parts List

    Exploded View and Replacement Parts List (1) Indoor Unit • MODEL: LB-E6080HL –36–...

  • Page 37: Parts List (Indoor Unit )

    Parts List (Indoor Unit ) • MODEL: LB-E6080HL Q'TY PARTS NAME PART No. REMARK LB-E6080HL 3720A30013A PANEL UPPER PANEL SIDE-L 3720A30010A 3720A30011A PANEL SIDE-R 4790A30006A BARRIER, INDOOR HOUSING ASSY-L 3661A20001A 3661A20001B HOUSING ASSY-R 4960A30002A MOUNT MOTOR 4681A20005A MOTOR ASSY 5833A20001A BLADE ASSY BLADE ASSY 5833A20001B...
  • Page 38 (2) Outdoor Unit MODEL: LB-E6080HL –38–...

  • Page 39: Parts List (Outdoor Unit )

    Parts List (Outdoor Unit ) • MODEL:LB-E6080HL Q'TY PART No. PARTS NAME REMARK LB-E6080HL BASE PAN ASSY 3041AP2569D 4778AP2526A ELBOW, DRAIN 5212AP3173A RUBBER, DRAIN 5040AP3178A SUPPORT, VALVE 4980AP2517B VALVE SERVICE 2A00499C (Ø 19.05) VALVE SERVICE 2H01890G (Ø 12.7) COMPRESSOR 5416AP2667B (ZR81KC-TFD) CONDENSER ASSY 5403AP2378D...
  • Page 40 Q'TY PART No. PARTS NAME REMARK LB-E6080HL MAGNETIC CONTACTOR 2A01031D SH CAPACITOR 2A00986D COVER DEICER 2H00644A TERMINAL BLOCK 3H00390A DEICER PWB ASSY 6871A20015N TERMINAL BLOCK 3A00493A TERMINAL BLOCK 4G00103A POWER RELAY 3A00261C –40–...
  • Page 41 August, 1999 P/No.: 3828A30014U Printed in Korea...

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