Related Manuals for LG LM-3061H2L/M
Summary of Contents for LG LM-3061H2L/M
- Page 1 Multi Type Room Air Conditioner SERVICE MANUAL MODEL: LM-3061H2L/M LM-3061B2L LM-3061C2L/M...
-
Page 2: Table Of Contents
Contents Functions............................3 Product Specifications ........................ 5 Dimensions............................7 Refrigeration Cycle Diagram....................... 9 Wiring Diagram .......................... 10 Operation Details ........................11 Display Function ........................17 Self-diagnosis Function ......................17 Installation ..........................18 Disassembly of the parts(Indoor unit) ..................37 2-way, 3-way Valve ........................39 Cycle Troubleshooting Guide ....................43 Electronic Parts Troubleshooting Guide.................. -
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 ( (Cooling (Heating Healthy Dehumidification Operation Mode ( Heating Operation Mode ( model only) model only) Fan Speed Selection (Low) (Med) (High) (CHAOS) Room, Temperature Display : (High: 39°C LOW : 11°C) Temperature Setting...
-
Page 5: Product Specifications
Product Specifications 1. LM-3061H2L/M, LM-3061B2L Operation A-Unit + B-Unit A-Unit Only B-Unit Only Unit Item 28,500(7,182) 17,500(4,410) 11,000(2,772) Cooling Capacity Btu/h(kcal/h) 28,500(7,182) 17,500(4,410) 11,000(2,772) Heating Capacity ℓ/h Moisture Removal 1Ø, 220-240V, 50Hz Power Source ø, V, Hz Indoor Air Circulation... - Page 6 2. LM-3061C2L/M Operation A-Unit + B-Unit A-Unit Only B-Unit Only Unit Item 28,500(7,182) 17,500(4,410) 11,000(2,772) Cooling Capacity Btu/h(kcal/h) Moisture Removal ℓ/h 1Ø, 220-240V, 50Hz Power Source ø, V, Hz Indoor 13.0 Air Circulation /min Outdoor Indoor 44 +1 38+1 Noise Level dB(A) Outdoor 57 +1...
-
Page 7: Dimensions
Dimensions 1. Indoor Unit ( 18k ) ( 12k ) Tubing hole cover Tubing hole cover Tubing hole cover Installation plate Installation plate MODEL 1,080 - 7 -... - Page 8 2. Outdoor Unit Gas side 3-way valve Liquid side 2-way valve MODEL LM-3061H2L/M, LM-3061B2L, LM-3061C2L/M 76.5 - 8 -...
-
Page 9: Refrigeration Cycle Diagram
Refrigeration Cycle Diagram 1. LM-3061H2L/M, LM-3061B2L(Cooling & Heating Model) Indoor Unit Outdoor Unit 2- WAY Valve Heat Exchanger 3- WAY B-Unit Valve 4- WAY Heat Valve-B Exchanger Comp-B 2- WAY Valve Heat Exchanger 3- WAY A-Unit Valve 4- WAY Valve-A Comp-A 2. -
Page 10: Wiring Diagram
Wiring Diagram 1. LM-3061H2L/M, LM-3061B2L Outdoor Unit Indoor Unit T/B2 FORCED T/B1 MAIN PCB OPERATION AUTO GN/YL RESTART MOTOR REMOTE T/B3 CONTROL MOTOR CAPA. THERMISTOR R BR "A" "B" COMP COMP STEP SH-CAPA. MOTOR CN-COMP CN-FAN CN-SV OPTION FUSE AC250V/T2A... -
Page 11: Operation Details
Operation Details 1. MAIN UNIT FUNCTION • DISPLAY Operation Indicator • On while in appliance operation, off while in appliance pause • Flashing while in disconnection or short in Thermistor (3 sec off / 0.5 sec on) Sleep Timer Indicator •... - Page 12 Defrost Control • Defrost operation is controlled by timer and sensing temperature of outdoor pipe. • The first defrost starts only when the outdoor pipe temperature falls below -6°C after 60 minutes passed from starting of heating operation and more than 10 minutes operation of compressor. •...
- Page 13 2) Fuzzy Operation for Dehumidification • According to the setting temperature selected by Fuzzy rule, when the intake air temp is 0.5°C or more below the setting temp, the compressor is turned off. When 0.5°C or more above the setting temp, the com- pressor is turned on.
- Page 14 Off-Timer Operation • When the set time is reached after the time is input by the remote controller, the appliance stops operating. • The timer LED is on when the off-timer is input. It is off when the time set by the timer is reached. •...
- Page 15 Auto Restarting Operation • When the power is restored after a sudden power failure while in appliance operation, the mode before the power failure is kept on the memory and the appliance automatically operates in the mode on the memory. •...
- Page 16 Remote Control Operation Mode • When the remote control is selected by the slide switch on the main unit, the appliance operates according to the input by the remote controller. Protection of the evaporator pipe from frosting • If the indoor pipe temp is below 0°C in 7 min after the compressor operates without any pause while in cool- ing cycle operation mode, the compressor and the outdoor fan are turned off in order to protect the indoor evaporator pipe from frosting.
-
Page 17: Display Function
Display Function 1. Heating Model Operation Indicator • Cooling, Soft Dry, Fan, Heating Sleep Timer Indicator • Sleep Mode Sleep Timer Indicator • Timer Mode Deice Indicator • Hot-start, Defrost Self-diagnosis Function Error Indicator • The function is to self-diagnoisis airconditioner and express the troubles identifically if there is any trouble. •... -
Page 18: Installation
Installation (1) Installation of Indoor, Outdoor unit 1) Selection of the best location Front 1. Indoor unit There should not be any heat source or steam • Left near the unit. • There should not be any obstacles to prevent Rear left the air circulation. - Page 19 2) Indoor Unit Installation The mounting wall should be strong and solid enough to protect it from the vibration. Installation Plate 1. Mount the installation plate on the wall with four Type "A" screws. (If mounting the unit on the concrete wall, consid- er using anchor bolts.) •...
- Page 20 (2) Piping and Drainage of Indoor Unit 1) Preparation of pipings Pipe cutter 1. Cut the pipes and the cable. • Use the accessory piping kit or the pipes pur- chased locally. Rough Slanted • Measure the distance between the indoor and the outdoor unit.
- Page 21 2) Indoor Unit Installation The mounting wall should be strong and solid enough to protect it from the vibration. Installation Plate 1. Mount the installation plate on the wall with four Type "A" screws. (If mounting the unit on the concrete wall, consid- er using anchor bolts.) marking-off line Type "A"...
- Page 22 (3) Piping and Drainage of Indoor Unit 1) Preparation of pipings Pipe cutter 1. Cut the pipes and the cable. • Use the accessory piping kit or the pipes pur- chased locally. Slanted Rough • Measure the distance between the indoor and the outdoor unit.
- Page 23 2) Connection of Pipings Installation plate 1. Remove the installation plate • Pull the two '∆' marked portion of bottom of the chassis and pull the installation plate out of chas- sis. Pull 2. Route the drain hose and the indoor tubing. Pull For left rear piping 3.
- Page 24 6. Indoor unit installation. • Hook the indoor unit onto the upper position of the installation plate. (Engage the two hooks of the rear top of the indoor unit with the upper Connecting edge of the installation plate.) cable Ensure the hooks are properly seated on the installation plate by moving it in left and right.
- Page 25 9. Set the pipings and the connecting cable to the back of the chassis with the tubing holder. • Hook the edge of tubing holder to tap on chas- sis and push the bottom of tubing holder to be engaged in the bottom of chassis. Drain hose Taping Piping...
- Page 26 (4) Connecting Pipings and the cable to Outdoor unit 1) Connecting the pipings 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 27 2) Connection of the cable Outdoor unit 1. Remove the cover control from the unit by loosen- ing the screw. Terminal block Connect the wires to the terminals on the control board individually as the following. Over 5mm Holder for power supply Terminal on the OUTDOOR UNIT cord...
- Page 28 (5) Checking the Drainage and Pipe forming 1) Checking the Drainage 1. Remove the Grille from the cabinet • Set the up-and-down air direction louver to open position(horizontally) by finger pressure. • Remove the securing screws. • To remove the Grille, pull lower the left and right side of the grille toward you (slightly tilted) and lift it straight upward.
- Page 29 2) Connect the cable to the indoor unit 1. 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.
- Page 30 3) Form the pipings 1. Wrap the connecting portion of indoor unit with the Insulation material and secure it with two Plastic Bands(for the left pipings). Drain hose • If you want to connect an additional drain hose, Taping the end of the drain-outlet should keep distance from the ground.(Do not dip it into water, and fix it on the wall to avoid swinging in the wind.) In case of the Outdoor unit is installed bellow...
- Page 31 (6) Air Purging of the Pipings and indoor unit The air which contains moisture remaining in the is 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 (7) Preventive function of cable mis-connection(Cooling & Heating) This product has a preventive function of cable mis-connection. In case of mis-connection (in case that the cables between indoor and outdoor units have not been connected properly), it gives a warning signal of LED flickering 3 minutes after starting operation.
- Page 33 (9) Test running 1) Connection of power supply 1. Connect the power supply cord to the inde- Battery Cover pendent power supply. 2. Prepare the remote control. • Insert two batteries provided. Remove the battery cover from the remote con- troller.
- Page 34 Operation (1) Name and Function-Remote Control (Door Closed) Remote Control Signal transmitter Transmits the signals to the room air conditioner. Signal transmitter START/STOP BUTTON Operation starts when this button is pressed and stops when the button is pressed again. OPERATION MODE SELECTION BUTTON Used to select the operation mode.
- Page 35 (2) Name and Function-Remote Control (Door opened) • Heating and Cooling Remote Control Signal transmitter Transmits the signals to the room air conditioner. Signal transmitter ON/OFF TIMER BUTTONS Used to set the time of starting and stopping operation. TIME SETTING BUTTONS Used to adjust the time.
- Page 36 (3) Name and Function-Remote Control (Door opened) • Cooling only Remote Control Signal transmitter Transmits the signals to the room air conditioner. Signal transmitter ON/OFF TIMER BUTTONS Used to set the time of starting and stopping operation. TIME SETTING BUTTONS Used to adjust the time.
-
Page 37: Disassembly Of The Parts(Indoor Unit)
Disassembly of the parts (Indoor unit) Warning : Disconnect the unit from power supply before mak- ing any checks. Be sure the power switch is set to “OFF”. To remove the Grille from the Chassis. • Set the up-and-down air discharge louver to open position (horizontally) by finger pressure. - Page 38 2. To remove the Control Box. • Remove securing screws. • Pull the control box out from the chassis care- fully. 3. To remove the Discharge Grille. • Pull the discharge grille out from the chassis carefully. 4. To remove the Evaporator. •...
-
Page 39: 2-Way, 3-Way Valve
2-way, 3-way Valve 2-way Valve (Liguid Side) 3-way Valve (Gas Side) Valve cap Hexagonal wrench Open position (4mm) Closed position Flare nut Flare nut Open position Closed position piping piping Service Service connection connection port cap port To outdoor unit To outdoor unit Works Shaft position... - Page 40 (1) Pumping down Liquid side Indoor unit Outdoor unit Close 2-Way valve Gas side Open 3-Way valve manifold gauge Low-handle Hi- handle (CLOSE) (CLOSE) Procedure • 1. Confirm that both the gas side and liquid side 6. Operate the air conditioner at the cooling cycle valves are set to the open position.
- Page 41 (2) Evacuation (All amount of refrigerant leaked) Liquid side Indoor unit Outdoor unit Close 2-Way valve Gas side Open 3-Way valve manifold gauge Vacuum pump Low- handle Hi- handle (OPEN) (CLOSE) • Procedure 1. Confirm that both the liguid side valve and gas 6.
- Page 42 (3) Gas Charging (After Evacuation) Liquid side Indoor unit Outdoor unit Close 2-Way valve Gas side Open 3-Way valve Charging manifold gauge cylinder Low-handle Hi-handle Check valve (OPEN) (CLOSE) • Procedure 1. Connect the gauge to the charging cylinder. This is different from previous procedures. - Connect the charge hose which you disconnect- Because you are charging with liquid refrigerant ed from the vacuum pump to the valve at the...
-
Page 43: 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 leakage Temp. -
Page 44: Electronic Parts Troubleshooting Guide
Electronic Parts Troubleshooting Guide 1. Product does not operate at all. (* Refer to Electronic Control Device drawing and Schematic diagram.) Turn off Main Power (After 10 seconds) Turn on Main Power Does "beeping" sound is made from the Indoor Unit? Check the voltage of power(About AC 220V/AC240V, 50Hz) Primarily, the operating condition of Micom is OK. - Page 45 2. The product is not operate with the remote control. Turn on Main Power While the compressor has been stopped, the compressor does not operate owing to the delaying function for 3 minutes after stopped. When the compressor stopped Indoor Fan is driven by a low speed. At this point the wind speed is not controlled by the remote controller.
- Page 46 3. When cooling does not operate Turn on Main Power Operate "Cooling Mode( )" by setting the desired temperature of the remote controller is less than one of the indoor temperature by 1°C at least. When in Air Circulation Mode, Compressor/Outdoor Fan is stopped. Check the sensor for indoor temperature is attached as close as to be effected by the temperature of Heat Exchanger(EVA).
- Page 47 4. When indoor Fan does not operate. Turn off Main power Check the connection of CN-FAN or CN-MOTOR Check the Fan Motor Check the Fuse(AC250V/T2A) Check the related circuit of indoor Fan Motor. • The pin of Micom, and the part for driving SSR •...
- Page 48 5. When Vertical Louver does not operate. • Confirm that the Vertical Louver is normally geared with the shaft of Stepping Motor. • If the regular torque is detected when rotating the Vertical Louver with hands ⇒ Normal • Check the connecting condition of CN-U/D Connector •...
- Page 49 6. When Heating does not operate Turn ON Main Power Operate “Heating Mode( )” by setting the desired temperature of the remote control is higher than one of the indoor temperature by 2°C at least. In heating Mode, the indoor fan operates in case the pipe temperature is higher than 28°C.
- Page 50 7. Outdoor unit does not operate at all. Check Outdoor Unit PCB Board Operation Check in Outdoor Items Content Remedy • Power Transformer - About AC220V/240V ± 10% - Check the power voltage (Outdoor unit) • Replace Trans - Input Voltage - About AC14 ±...
-
Page 51: Electronic Control Device
Electronic Control Device 1. Indoor MAIN P.C.B ASM • LM-3061H2L/M, LM-3061B2L • LM-3061C2L/M - 51 -... - Page 52 2. Outdoor MAIN P.C.B ASM(LM-3061H2L/M, LM-3061B2L) 3. DISPLAY P.C.B ASM - 52 -...
-
Page 53: Schematic Diagram
Schematic Diagram 1. Indoor • LM-3061H2L/M, LM-3061B2L - 53 -... - Page 54 • LM-3061C2L/M - 54 -...
- Page 55 2. Outdoor • LM-3061H2L/M, LM-3061B2L - 55 -...
-
Page 56: Exploded View And Replacement Parts List
Exploded View and Replacement Parts List 1. Indoor Unit (18k) - 56 -... - Page 57 Service Parts List PART NO. LOCATION NO. DESCRIPTION REMARKS LM-3061H2L, LM-3061B2L(18K) LM-3061C2L(18K) 131410 3141A20002H CHASSIS ASSY 135311 3531A10008H GRILLE ASSY, DISCHARGE(INDOOR) 135312 3531A10033E GRILLE ASSY, FRONT(INDOOR) 135314 3531A20011M GRILLE ASSY, INLET SUB 146811 4681AR2727H MOTOR ASSY, STEP 152302 5230A20001A FILTER(MECH), A/C 159901 5990A30001B VANE, HORIZONTAL...
- Page 58 2. Indoor Unit (12k) - 58 -...
- Page 59 Service Parts List PART NO. LOCATION NO. DESCRIPTION REMARKS LM-3061H2L, LM-3061B2L(12K) LM-3061C2L(12K) 131410 3141A20003B CHASSIS ASSY 135311 3531A10023A GRILLE ASSY, DISCHARGE(INDOOR) 135312 3531A10024M GRILLE ASSY, FRONT(INDOOR) 135314 3531A20028F GRILLE ASSY, INLET SUB 146811 4681AR2727H MOTOR ASSY, STEP 152302 5230A20004A FILTER(MECH), A/C 159901 5990A30006B VANE, HORIZONTAL...
- Page 60 3. Outdoor Unit - 60 -...
- Page 61 Service Parts List PART NO. LOCATION DESCRIPTION REMARKS LM-3061B2L LM-3061H2L LM-3061C2L 137213 1A00204E PANEL ASSY, SIDE 263230 6323AQ2333P THERMISTOR ASSY 268716 6871A20031V PWB(PCB) ASSY, MAIN(OUTDOOR) 430410 3041AP2741Z BASE ASSY, OUTDOOR 435511 3551A30028P 3551A30028L COVER ASSY, CONTROL(OUTDOOR) 435512 3H03266H COVER ASSY, TOP(OUTDOOR) 437210 1A00197C PANEL ASSY, FRONT SUB...
- Page 62 Memo - 62 -...
- Page 63 December, 2002 P/No.: 3828A20023H Printed in Korea...