Related Manuals for LG LP-K3020HL
Summary of Contents for LG LP-K3020HL
- Page 1 Библиотека СОК Package Air Conditioner SERVICE MANUAL MODEL: LP-K3020HL/HA LP-K3060HL/HA LP-K3060ZL/ZA...
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Page 2: Table Of Contents
Contents Functions Product Specifications Dimensions Refrigeration Cycle Diagram Wiring Diagram Operation Details Installation of Indoor, Outdoor Unit Test Running 3-way Valve Cycle Troubleshooting Guide Electronic Parts Troubleshooting Guide Electronic Control Device Schematic Diagram Exploded View and Replacement Parts List –2–... -
Page 3: Functions
Functions Indoor Unit Power Switch ON/OFF Operation Mode Control • Cooling, Heating, Soft Dry, Fan Indoor Fan Speed Control • High, Low Jet Cool • Speed Cooling operates super high fan speed in cooling mode Energy Saving • Cooling Mode only Room Temperature control •... - Page 4 Remote Control Operation ON/OFF Cooling Operation Mode Heating Operation Mode Sot Dry Operation Mode • Intermittent operation of fan at low speed. Fan Operation • Used to circulate room air without cooling. Timer Control • OFF Timer (1, 2, 3,..7 hour) Jet Cool •...
- Page 5 Outdoor Unit Deice Control • De-ice PCB Outdoor Fan Speed Control • One speed Sensing Heat Exchanger Temperature • Heat exchanger temperature sensor (Thermistor) Sensing Discharge Pressure For Compressor • Discharge pressure sensor (High Pressure Switch) –5–...
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Page 6: Product Specifications
Product Specifications MODEL LP-K3060HL/HA LP-K3020HL/HA LP-K3060ZL/ZA ITEMS UNIT POWER SUPPLY Ø, V, Hz 1, 220-240, 50 1, 220,60 COOLING CAPACITY Btu/hr 27,800 27,800 HEATING CAPACITY Btu/hr 27,800 + (2kw) 27,800 (Incl. elec. Heater) POWER INPUT COOLING 3,000 3,500 HEATING 2,800... -
Page 7: Dimensions
Dimensions Indoor Unit Outdoor Unit Air Outlet Vent Air Intake Vent Remote Signal (Rear) Receptor Air Inlet Vent Air Outlet Vent Refrigeration Cycle Diagram INDOOR UNIT OUTDOOR UNIT LIQUID SIDE CAPILLARY TUBE CHECK VALVE CAPILLARY TUBE BY PATH CAPILLARY TUBE HEAT HEAT EXCHANGER... -
Page 8: Wiring Diagram
ORANGE BLACK WHITE DOOR S/W BROWN YELLOW GN/YL GREEN/YELLOW HIDDEN LINE( - - - - - - - ) : FIELD WIRING (2) LP-K3020HL/HA HIDDEN LINE: FIELD WIRING INDOOR UNIT OUTDOOR UNIT (CONNETING CABLE) CIRCUIT DIAGRAM NOTE BLUE BLACK GN/YL... -
Page 9: Operation Details
Operation Details (1) The function of main control 1. Time Delay Safety Control ƒU3min¡ƒ The compressor is ceased for 3 minutes to balance the pressure in the refrigeration cycle. (Protection of compressor) ƒU3sec¡ƒ The indoor fan is ceased for 3 seconds to prevent relay noise. (Protection of fan relay and micro chip) ƒU30sec¡ƒ... - Page 10 5. Heating Mode Operation The unit will operate according to the setting by the remote controller and the operation diagram is shown as following. Intake Air Temp. Setting Temp. +1°C (Compressor OFF) Setting Temp. (Compressor ON) Setting Temp. -1°C minimum minimum minimum 10sec.
- Page 11 6. Hot-Start Control • The indoor fan stops until the evaporator piping temperature will be reached to 28°C. • During heating operation, if piping temperatures fall below 26°C fan stops. • The operation diagram is as following. Maximum 1min INDOOR PIPE TEMP.
- Page 12 8. Soft Dry Operation Mode • During Soft Dry Operation, the compressor ON temperature is the setting temperature plus 2°C, the compressor OFF temperature is the setting temperature minus 1°C. • When the room temperature rises over the compressor ON temperature, the operation mode is switched to the Cool- ing mode.
- Page 13 12. Alarm mode display / only displayed while operating. C C O O : The sensor for sensing room temperature is open or short. C C 1 1 : The sensor for sensing piping temperature is open or short. 13. Jet Cool During the JET COOL function at any moment, the A/C starts to blow the cool air at extremely high speed setting the room temp.
- Page 14 16. Function of changing set temperature when re-operation after stop. Operation is set the following condition when re-operation with start/stop button. 1.Operation mode. Cooling/soft dry mode ¡ Cooling mode Heating mode ¡ Heating mode 2. Setting the set temperature when cooling operation. Room temperature >...
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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. 5 c m • There should not be any obstacles to prevent the 5 c m air circulation. - Page 16 2. Indoor Unit installation 3. Outdoor unit Installation ¥LThe mounting floor should be strong and solid ¥LInstall the outdoor unit on the concrete or any enough to prevent it from vibration. solid base securely and horizontally by securing it with bolts (Ø12mm) and nuts. ¥MDrill the piping hole with 70mm diameter hole- core drill at either the right or the left of indoor ¥MIf there is any vibration transmitted to the build-...
- Page 17 Installation Method 1. Procedure Installation works Descriptions Preparation of tools and installation parts Preparation of installation Flaring the pipes To insert the flare nuts, mounted on the connection parts of both indoor and outdoor unit, onto the copper pipes. Pipe bending To reduce the flow resistance of refrigerant.
- Page 18 2. Preparation of installation parts and tools Installation Parts, Tools Flaring tool (Ø 6,35 - Ø 19,05) Flaring the pipes Remear Remove burrs from cut edges of pipes. Pipe cutter (MAX 35mm Copper pipe) Cutting the pipings Wrench (H5, H4 hexagonal wrench) To open the service valve Pipe bender Bending the pipings...
- Page 19 Piping of Indoor Unit 1. Preparation of piping Pipe cutter ¤ Cut the pipes and the cable • Use the accessory piping kit or the pipes purchased locally. Slanted Rough • Measure the distance between the indoor and 90° the outdoor unit. •...
- Page 20 2. Connection of piping ¤ Move the indoor tubing and drain hose to the hole • Remove tubing holder and pull the tubing out of the chassis. ¤ŁReplace the tubing holder into original position ¤ØRoute the tubing and the drain hose staight backwards. ¤ŒInsert the connecting cable into the indoor unit through the hole.
- Page 21 Connecting the Cable to Indoor Unit • In order to protect cable, it should be inserted “Bushing Rubber”. • The inside and outside connecting cable can be connected after opening the inlet grille. ¤ Open the inlet grille manually. ¤ŁConnet the supplied cables to the connector on the control board.
- Page 22 Connecting Piping and the Cable to Outdoor Unit 1) Connecting pipings to outdoor unit ¤ Align the center of the pipings and sufficiently tighten the flare nut with fingers. ¤ŁFinally tighten the flare nut with torque wrench until the wrench clicks. •...
- Page 23 Power Supply and Wiring Outside The unit is completely wired internally at the fac- Conductor UNIT VOLTS diameter cross-sectional area tory according to general rule of electrical tech- 450/750V 4.0mm 13.3mm nology, but local rules, if they are required, should be complied with.
- Page 24 Checking the Drainage and Form the Piping 1. Checking the Drainage ¤ Remove the inlet grille with your hands as shown (right and left) and pull in the direction indicated by the arrow. ¤Ł Check the drainage • Pour a glass of water into the drain pan. •...
- Page 25 2. Form the Piping ¤ Wrap the connecting port of indoor unit with the insulation material and secure it with two Plastic Gas side Bands. (for the right Piping) piping • If you connect an additional drain hose, the end of Main cable the drain-outlet should be water, and fix it on the wall to avoid swinging in the wind.)
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Page 26: Test Running
Test running 1. PRECAUTIONS IN TEST RUN • The initial power supply must provide at least 90% of the rated voltage. Otherwise, the air conditioner should not be operated. Carry out the test run more than 5 minutes without fail. Caution (Test run will be cancelled 18 minutes later automatically) •... - Page 27 CAUTION After the confirmation of the above conditions, prepare the wiring as follows: 1) Never fail to have an individual power specialized for the air conditioner. As for the method of wiring, be guided by the circuit diagram pasted on the inside of control box cover. 2) Provide a circuit breaker switch between power source and the unit.
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Page 28: 3-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 29 1) Re-airpurging (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 30 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 31 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 32 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 33 2) Heating Mode (After Evacuation) Charging cylinder OPEN CLOSE Check valve Liquid side Indoor unit Open Outdoor unit 3-Way valve Gas side Open 3-Way valve • Procedure (1) Connect the charge hose to the charge cylinder. • Connect the charge hose which you disconnected This is different from previous procedures.
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Page 34: 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 35: Electronic Parts Troubleshooting Guide
Electronic Parts Troubleshooting Guide 1) No Cooling operation performed 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... - Page 36 2) No heating operation works Is the AC220V (AC 240 V) between connector (CN-outunit) ¥L and ¥N of Main P.C.B Is the input power AC220V (AC240V) at COMP magnetic coil contactor? Is the unit operating? Check the wiring Check the COMP magnetic connection contactor of outdoor unit.
- Page 37 3) No heater operation works Select the heating operation mode. Is the heating operating? Is the Compressor Compressor "ON" operating? Is the Heat S/W of Main Heat S/W "ON" PCB "ON"? Is the heater S/W of Main Heater S/W "ON" PCB"ON"? Replacement MICOM Is the DC 5V at 15 pin of...
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Page 38: Electronic Control Device
Electronic control device • MAIN P.C.B ASM • DISPLAY P.C.B ASM HA/ZA MODEL A/CL –38–... -
Page 39: Schematic Diagram
Schematic Diagram –39–... -
Page 40: Exploded View And Replacement Parts List
Exploded View and Replacement Parts List 1. Indoor Unit –40–... - Page 41 –41–...
- Page 42 Parts List (Indoor Unit ) Q'TY PART No. PARTS NAME REMARK LP-K3060HL LP-K3020HL LP-K3060ZL LP-K3060HA LP-K3020HA LP-K3060ZA FRAME DIFFUSERR ASSY 3531A10011C FRAME DIFFUSER 3210A10001 LOUVER HORIZONTAL 4758A30003B LINK HORIZONTAL 4520A30007B SUPPORT-H 4980A30007B LINK HORIZONTAL 4520A30008A SYNCHRONOUS MOTOR 2H01102A 3A01947A DECO...
- Page 43 Q'TY PARTS NAME PART No. REMARK LP-K3060HL LP-K3020HL LP-K3060ZL LP-K3060HA LP-K3020HA LP-K3060ZA BLOWER 5834AP1097A RUBBER 5040AP4082A LOCKER 4A01405C SPRING LOCK WASH 1WSD0800030 1NHA0801206 DRAIN PAN 3086AP1217A DRAIN HOSE 5251AR1222J CAPACITOR 3H00611C 2H00841J DRAIN PAN ASSY 3087AP2581 MAIN PCB ASSY 6871A20067...
- Page 44 2. Outdoor Unit –44–...
- Page 45 Parts List (Outdoor Unit ) Q'TY PART No. PARTS NAME REMARK LP-K3060HL LP-K3020HL LP-K3060ZL LP-K3060HA LP-K3020HA LP-K3060ZA BASE W. ASSY 2A02084K SCREW WELD 4H00525B COIL BEND ASSY 6140AP2096Q CHECK VALVE 3A01020A COMP 2A01032A 5416AR1411J INSULATION 3A02194B HIGH PRESSURE SWITCH 3A02524A...
- Page 46 January, 2000 P/No.: 3828A30074K Printed in Korea...