Related Manuals for LG LV-B3620CL
Summary of Contents for LG LV-B3620CL
- Page 1 Библиотека СОК Room Air Conditioner (Convertible Type) SERVICE MANUAL MODEL: LV-B3620CL...
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Page 2: Table Of Contents
Contents Functions ..........................3 Product Specifications ......................5 Dimensions ..........................6 Refrigeration Cycle Diagram ....................8 Wiring Diagram........................9 Operation Details ........................10 Display Function ........................15 Self-diagnosis Function......................15 Installation ..........................16 Operation ..........................33 Disassembly of the parts (Indoor Unit) ................34 2-way, 3-way Valve.........................38 Cycle Troubleshooting Guide....................44 Electronic Parts Troubleshooting Guide................45 Electronic control device......................49 Schematic Diagram .......................50 Exploded View and Replacement Parts List...............51... -
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. Starting Current Control • Indoor fan is delayed for 5 seconds at the starting. Time Delay Safety Control •... - Page 4 Remote Controller Operation ON/OFF Operation Mode Selection Cooling Operation Mode.( Auto Operation Mode.( Soft Dry Operation Mode.( Fan Speed Selection (Low) (Med) (High) (CHAOS) Room Temperature Display : High:39°C LOW:11°C Temperature Setting Down to 18°C HIGH TEMPERATURE Cooling Up to 30°C Setting the Time or Timer Timer Selection : OFF, ON, OFF...
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Page 5: Product Specifications
Product Specifications (Cooling Only) Model Name LV-B3620CL Item Unit Cooling Capacity Btu/h(kcal/h) 36,000(9,072) Moisture Removal Power Source ø, V, Hz 1ø 220, 60Hz Indoor Air Circulation /min Outdoor Input 3,900 Running Current E.E.R. Btu/h-W 9.23 Dimensions Indoor 1,200 x 205 x 615... -
Page 6: Dimensions
Dimensions (1) Indoor Unit 1 2 0 0 m m 205mm 63mm 38mm 175mm (Installation Plate) 250mm (Rear Side) –6–... - Page 7 (2) Outdoor Unit 4-ø12Hole (Air intake vent) (Air intake vent) –7–...
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Page 8: Refrigeration Cycle Diagram
Elevation(m) MODEL Liquid Rated Rated LV-B3620CL 3/4" 3/8" For installation over rated distance, 50g of refrigerant should be added for each meter. ex) When installed at a distance of 15m, 500g of refrigerant should be added. (15-5) x 50g = 500g... -
Page 9: Wiring Diagram
Wiring Diagram (1) Indoor Unit TRANS- THERMISTOR FORMER CAPACITOR CN-TRANS CN-TH CN-FAN MAIN PCB RY-L ASSY. MOTOR RY-M GN/YL RY-H DOOR S/W 1,2 GN/YL STEP MOTOR FUSE T3.15A STEP RY-COMP MOTOR CN-4WAY CN-DISP TERMINAL 1 ( L ) 2 ( N ) DISPLAY PCB BLOCK ASSY. -
Page 10: 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 11 4. Sleep Mode Auto Operation • When selecting the Cooling( ) combined with the Sleep Mode Auto Operation( ), the operation diagram is as following. Cooling Mode with the Sleep Mode • The setting temperature will be raised by 1°C 30minutes later and by 2°C 1 hour later. •...
- Page 12 • Auto Operation for Cooling. (Cooling only Model) Operation Condition Intake-air Temperature Setting temperature Fan speed Air Direction Control Over 26°C 25°C In this mode, when Over 24°C~below 26°C Intake air -1°C When Auto Operation pressing the verti- Over 22°C~below 24°C Intake air -0.5°C initial start cal air diretion con-...
- Page 13 6. Natural wind by CHAOS logic For more fresh feeling than other fan speed mode, press the indoor fan Speed Selector and set to CHAOS mode. In this mode, the wind blows like natural breeze by auto- matically changing fan speed according to the CHAOS logic.
- Page 14 8. Forced operation • If you lose wireless remote controller, you can operate the unit with forced operation switch. • The standard conditions are as following. Cooling Model Operation Mode Cooling FAN Speed High Setting Temp. 24°C • Unit operates in low fan mode for first 15 seconds, then switched to proper operation mode according to intake Air temperature.
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Page 15: Display Function
Display Function 1. Heating Model Operation Indicator • Coolling, Soft Dry, Fan, Heating Timer Indicator • Timer Mode Sleep Timer Indicator • Sleep Mode Outdoor Unit Operation • Outdoor Unit Operating Note) For normal operation after checking by test mode, you should press SW1 nine times for resetting or reconnect the power cord. -
Page 16: Installation
Installation 1. Installation of Indoor, Outdoor Unit 1. Selection of the best location More than 20cm 1) Indoor unit More than 20cm • There should not be any heat source or steam near the unit. • There should not be any obstacles to prevent the air More than eye-level circulation. - Page 17 2. Indoor unit installation Before Installing, prepare Installation Plates • 'Installation Plates' are attached at the bottom of Side Plate indoor unit. Detach them by removing each 3 screws at both sides. • Detach 'Side Plate (R,L)' by removing each 2 screws on both sides.
- Page 18 • Insert the nuts and washer onto the suspension bolts Anchor nut for locking the suspension bolts on the ceiling. Ceiling • Mount the suspension bolts to the anchor-nuts firmly. • Secure the Installation plates onto the Suspension Washer bolts (adjust level roughly.) using nuts, washers and Suspension bolts spring washers.
- Page 19 CAUTION 1. Install declination of the indoor unit is very important for the drain of the convertible type air conditioner. 2. Minimum thickness of the insulation for the connecting pipe shall be 7mm. 3. If the Installation Plates are fixed to horizontal line, the indoor unit after installing will be declined to the bottomside.
- Page 20 • Secure the unit to the Installation Plates with four M8 bolts and washers. • Before working, refer to "Connecting pipe and cable to Indoor Unit" on page 26. • Hook up the Inlet Grille Hook to the cabinet. Inlet hanger •...
- Page 21 2) Installation on the Wall • Select and mark the position for fixing bolts and piping hole. Decide the position for fixing bolts slightly tilted to the drain direction after considering the direction of drain hose. • Drill the hole for anchor nut on the wall. •...
- Page 22 Install the Indoor unit onto Installation Plate. • Insert 2 hooks on the both left and right side of the unit Inner slot to the inner slot (wall side) of the Installation Plate. • Secure the unit to the Installation Plate with four M8 bolts and washers.
- Page 23 3) Installation on the floor From the left wall Installation of Mount Bracket. more than 760mm • Select and mark the position for Mount Brackets and the piping hole. From the • Drill the hole for the anchor nut on the wall. right wall •...
- Page 24 3. Connecting Pipes to the Indoor Unit 3-1. Preparation of Piping Main cause of gas leakage is defect in flaring work. Copper Slanted Uneven Rough Carry out correct flaring work in the following proce- tube 90° dure. 1) Cut the pipes and the cable. Use the accessory piping kit or the pipes pur- chased locally.
- Page 25 3-2. Installation on the ceiling 1) Connecting the pipes to the indoor unit The pipe can be connected to right side, bottom or back of the unit. 1. For the Right Side Piping • After bending an end of the connecting tube, align the center of the pipings and sufficiently tighten the flare Hose nut with fingers.
- Page 26 3-3. Installation on the wall or floor 1) Connecting the pipes to the indoor unit 1. For the Right Rear Piping • Remove the knock-out at the back side of the cabinet. Piping • After bending an end of the connecting tube, align the center of the pipings and sufficiently tighten the flare Taping nut with fingers.
- Page 27 4. Connecting Pipes to the Outdoor Unit 1) Connecting the pipes to the Outdoor unit 1. Align the center of the pipings and sufficiently tighten the flare nut with fingers. 2. Finally, tighten the flare nut with torque wrench until the wrench clicks. •...
- Page 28 6. Connecting Cables between Indoor Unit and Outdoor Unit 1) Connecting cables to the Indoor Unit 1) Remove the Air guide - L by loosening 2 screws after removing the Inlet grille from the Indoor unit. 2) Connect the wires to the terminals on the con- trol board individually according to the outdoor AIR GUIDE-L unit connection.
- Page 29 Outdoor unit 3) Connecting the cable to Outdoor Unit Terminal block Outdoor unit (36K) 1. Remove the Cover control from the unit by loosening a screw. Over 5mm Terminal block Connect the wires to the terminals on the control board individually as following. Cord Clamp 3øPower Holder for...
- Page 30 4) Form the pipings Seal a small opening 1. Wrap the connecting portion of indoor unit with around the pipings the Insulation material and secure it with two with gum type sealer. Plastic Bands. (for the right pipings) • If you want to connect an additional drain hose, the end of the drain-outlet should keep distance from the Drain hose ground.
- Page 31 7. Air Purging of the Pipes and Indoor Unit The air which contains moisture remaining in the refrigeration cycle may cause a malfunction on the compressor. 1. Confirm that both the liquid side valve and the gas side valve are set to the closed position. 2.
- Page 32 8. Test running 1) Connection of power supply 1. Connect the power supply cord to the inde- pendent power supply. • Circuit breaker is required. 2. Prepare the remote control. • Insert two batteries provided. Remove the battery cover from the remote con- troller.
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Page 33: Operation
Operation (1) Name and Function-Remote controller OPERATION DISPLAY Remote Controller Displays the operation conditions. Signal transmitter. START/STOP BUTTON Operation starts when this button is pressed and stops when the button is pressed again. Transmits the signals to the room air conditioner. OPERATION MODE SELECTION BUTTON Used to select the operation mode. -
Page 34: Disassembly Of The Parts (Indoor Unit)
Disassembly of the parts (Indoor unit) Warning : Disconnect the unit from power supply before making any checks. Be sure the power switch is set to “OFF”. 1. Remove the air filter. • Pull the inlet grille slightly toward you. •... - Page 35 4. Remove air guide upper, crossflow fan and motor. • Remove the screws of both sides and center securing the upper air-guide. • Remove 2 screws fastening the bracket of door switch. Door Switch • Remove a bearing assembly by removing a screw and the bearing cover.
- Page 36 6. Remove the front panel. Diffuser frame • Remove the screws of both sides fixing the front Diffuser panel. frame • Push the upper side of front panel strongly to pull Hook out the front panel from the inner hook of diffuser frame.
- Page 37 9. Remove the vane-upper, vane-lower and step motor. Step Motor • Remove 2 screws securing the step motor Vane Supporter assembly and pull it out from the vanes carefully. • Unhook the vanes from the vane supporter and remove the upper vane and lower vane by pulling the center of vanes with care.
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Page 38: 2-Way, 3-Way Valve
2-way, 3-way Valve 2-way Valve (Liquid Side) 3-way Valve (Gas Side or Liquid Side) Valve cap Hexagonal wrench (4mm) Open position Flare nut Flare nut Closed position Open position Closed position piping piping Service Service connection connection port cap port To outdoor unit To outdoor unit Works... - Page 39 1. Pumping down Liquid side Indoor unit Outdoor unit Open 2-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 40 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 41 2) Balance refrigerant of the 2-way, 3-way valves (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 42 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 43 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 44: 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 45: Electronic Parts Troubleshooting Guide
Electronic Parts Troubleshooting Guide Possible Trouble 1 : The unit does not operate. Is the input voltage Check the FUSE of transformer AC220V? and the wiring diagram Check the RY-COMP PIN 3 and CN-4WAY PIN 1 Is the output voltage Is shorted the Check the main P.C.B of transformer about AC14V? - Page 46 Possible Trouble 2 : The indoor fan does not operate. Does the temperature Adjust set temperature Is it DRY mode? set all right? Is it the HOT Does the temperature Adjust set temperature mode? set all right? Is IC02M operated Exchange IC02M normally? Is the each S.S.R...
- Page 47 Possible Trouble 3 : Up/Down Air direction louver does not operate. Is IC01M operated Exchange IC01M normally? Is the PIN 1 of Check the main P.C.B CN-UP/DOWN DC12V? DC12V pattern Check the step motor and connector (CN-UP/DOWN 1,2) Possible Trouble 4 : Remote controller does not operate.
- Page 48 Possible Trouble 5 : Ineffective Heating Check RY-4WAY Is 4way-valve operated? Is IC02M operated Exchange IC02M normally? Check the RY-4WAY and 4way-valve Possible Trouble 6 : The unit does not operate by forced operation switch. Is the F/OP key Exchange F/OP key any problem? Check P.C.B pattern check –48–...
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Page 49: Electronic Control Device
Electronic control device (1) MAIN P.C.B ASM (2) DISPLAY P.C.B ASM –49–... -
Page 50: Schematic Diagram
Schematic Diagram –50–... -
Page 51: Exploded View And Replacement Parts List
Exploded View and Replacement Parts List 1. Indoor Unit –51–... - Page 52 Parts List LOCATION No. DESCRIPTION PART No. REMARK 130911 CABINET ASSY 3091AP2533B 135314 GRILLE ASSY, INLET 5237AP2817C 137213 PANEL ASSY, SIDE 3720AP2767P 146811 MOTOR ASSY, STEP 4681AR2727G 152302 FILTER(MECH), A/C 5230AP7093A 159901-1 VANE ASSY, HORIZONTAL 5991AP2867B 159901-2 VANE ASSY 5991AP7334C 166000 SWITCH, PUSH 6600AP2059A...
- Page 53 2. Outdoor Unit –53–...
- Page 54 Parts List LOCATION No. DESCRIPTION PART No. REMARK 135301 GRILLE ASSY, DISCHARGE(OUTDOOR) 2A00144Y 137213 PANEL, SIDE 3A01055Z 349499 ORIFICE 2A00251Z 430410 BASE ASSY, WELD(OUTDOOR) 3A01517W 435512 COVER ASSY, TOP(OUTDOOR) 2A00273A 435512 COVER ASSY, TOP(OUTDOOR) 3A01651A 437210 PANEL ASSY, FRONT SUB 3A00426X 447910 BARRIER ASSY, OUTDOOR...
- Page 55 March, 2001 P/No.: 3828A30027Q Printed in Korea...