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Air Conditioner Service Manual TABLE OF CONTENTS Safety Precautions ...........................................................................................................................................................3 Dimensions .......................................................................................................................................................................9 Symbols Used in this Manual ..............................................................................
Safety Precautions Safety Precautions To prevent injury to the user or other people and property damage, the following instructions must be followed. ■ Incorrect operation due to ignoring instruction will cause harm or damage. The seriousness is classified by the following indications. This symbol indicates the possibility of death or serious injury. This symbol indicates the possibility of injury or damage to properties only. ■ Meanings of symbols used in this manual are as shown below.
Safety Precautions Be cautious when unpacking and installing the product. For installation, always contact the dealer or an Authorized Service Center. • Sharp edges could cause injury. Be • There is risk of fire, electric shock, especially careful of the case explosion, or injury. edges and the fins on the condenser and evaporator. Be sure the installation area does not deteriorate with age.
Safety Precautions Use a dedicated outlet for this appliance. • There is risk of fire or electrical shock. Do not allow water to run into electric parts. • It may cause There is risk of fire, failure of the product, or electric shock. Grasp the plug to remove the cord from the outlet. Do not touch it with wet hands. • There is risk of fire or electrical shock. Do not store or use flammable gas or combustibles near the air conditioner. • There is risk of fire or failure of product.
Safety Precautions Do not open the inlet grill of the product during operation. (Do not touch the electrostatic filter, if the unit is so equipped.) When the product is soaked (flooded or submerged), contact an Authorized Service Center. Ventilate the product from time to time when operating it together with a stove, etc. • There is risk of physical injury, electric shock, or product failure. • There is risk of fire or eletric shock. • There is risk of fire or electrical shock.
Safety Precautions Do not install the product where the noise or hot air from the outdoor unit could damage the neighborhoods. • It may cause a problem for your neighbors. Use two or more people to lift and transport the air conditioner. • Avoid personal injury. Do not install the product where it will be exposed to sea wind (salt spray) directly. • It may cause corrosion on the product.
Safety Precautions Always insert the filter securely. Clean the filter every two weeks or more often if necessary. • A dirty filter reduces the efficiency of the air conditioner and could cause product malfunction or damage. Do not insert hands or other objects through the air inlet or outlet while the air conditioner is plugged in. • There are sharp and moving parts that could cause personal injury. Use a firm stool or ladder when cleaning or maintaining the air conditioner.
Dimensions Dimensions Symbols Used in this Manual This symbol alerts you to the risk of electric shock. This symbol alerts you to hazards that could cause harm to the air conditioner. NOTICE This symbol indicates special notes. Indoor Unit Hanger Hole W D H Fix Hole Pipe Hole Model INDOOR UNIT Dimension W mm(inch) 600(23.6) H mm(inch) 600(23.6) D mm(inch) 146(5.
Dimensions Outdoor Unit L2 D L1 W H L3 L5 Gas side (3-way valve) L4 Liquid side (2-way valve) DIM MODEL unit 9k, 12k Models W mm 770(30.3) H mm 540(21.3) D mm 245(9.6) L1 mm 285(11.2) L2 mm 64(2.5) L3 mm 518(20.4) L4 mm 10(0.4) L5 mm 100(3.
Product Specifications Product Specifications AS-C091F2G0(LA091CNP) AS-C121F2G0(LA121CNP) AS-H091F2G0(LA091HNP) AS-H121F2G0(LA121HNP) AS-C091F2G0(LA090CP) AS-C121F2G0(LA120CP) AS-H091F2G0(LA090HP) AS-H121F2G0(LA120HP) Models Cooling Capacity (Min~Rating~Max) Heating Capacity (Min~Rating~Max) Power Input Running Current Starting Current EER COP Power Supply Power Factor Air Flow Rate Moisture Removal Sound Level Cooling/Heating Cooling/Heating Cooling/Heating Indoor,Max Outdoor,Max Indoor,H/M/L Outdoor,
Installation Installation Read carefully, and then follow step by step.
Installation Installation Map NOTICE Installation parts you should purchase. More than 7.9"(20cm) 3.9"(10cm) More than 19.6"(50cm) (Left and right are identical) Sleeve Bushing-Sleeve Putty(Gum Type Sealer) Bend the pipe as close as possible on the wall but be careful so that it may not break. Vinyl tape (Wide) Saddle • To carry out the drainage test, remove the air filter and pour water into the heat exchanger. • Apply after carrying out a drainage test. More than 23.6"(60cm) More than 11.
Installation Confirm The Refrigerant 1. Check the quality label on the indoor and outdoor unit. 2. Make certain that the refrigerant is R-410A. NOTICE THIS PRODUCT CONTAINS R-410A REFRIGERANT 1) Different compressor oil - R-410A(Polyol ester) / R-22(Mineral). - Do not mix the existing mineral oil. - Do not apply used pipe, tools and gauges covered with the existing mineral oil. 2) Absorption of moisture -Compressor’s oil has the high absorption rate of moisture.
Installation Select the best Location Indoor unit 1. Do not have any heat or steam near the unit. 2. Select a place where there are no obstacles in front of the unit. 3. Make sure that condensation drainage can be conveniently routed away. More than 19.6"(50cm) More than 7.9"(20cm) 4. Do not install near a doorway. 5. Ensure that the interval between a wall and the left (or right) of the unit is more than 19.6"(50cm). The unit should be installed as high as possible on the wall, allowing a minimum of 7.
Installation Piping Length and Elevation Pipe Size Capacity (Btu/h) 9k, 12k Suction Evap Ø12.7mm(1/2") Ø6.35mm(1/4") Standard Length m(ft) Max. Elevation B m(ft) Max. length A m(ft) Additional Refrigerant g/m(oz/ft) 7.5(25) 7.5(25) 15(49) 20(0.22) Indoor unit Outdoor unit Outdoor unit A B A Outdoor unit Indoor unit Oil trap B A Indoor unit B If piping length is more than 16.
Installation Preparing Work for Installation Open panel front 1. Pull the upper part of the front panel. 2. Lift up the panel. 3. To detach the front panel, remove the two screws at the lower part. 4. Detach the front panel from the body. 5. To detach the panel, disconnect the connector at the upper part. Panel Front Connector Cover pipe and cover side remove 1. Please remove the screw of the center tuning cover. 2. Pull up the side cover of desired connecting direction, then cover side is separated. 3.
Installation Fixing Indoor Unit 1. Attach an Installation guide map on the desired surface. INSTALLATION GUIDE MAP 2. Look at suited horizon by horizontal meter on the horizontal setting line, and fix lightly the map by adhesive tape. Horizontality 3. Make a hole with a diameter of 6mm and depth of 30-35mm by piercing a screw point. IN ST AII AT IO N IN ST AL LA TIO N GU ID EM AP 4. Drill the pierted part as a diameter of 50mm for connecting piping. (In case of piercing rear surface) GU ID EM AP 5.
Flaring work and connection of piping Flaring work and connection of piping Flaring Work Main cause for gas leakage is due to defect in flaring work. Carry out correct flaring work in the following procedure. Cutting the pipes and the cable. 1. Use the piping kit accessory or the pipes purchased locally. 2. Measure the distance between the indoor and the outdoor unit. Copper pipe Slanted Uneven Rough 90° 3. Cut the pipes a little longer than measured distance. 4. Cut the cable 4.9ft(1.
Flaring work and connection of piping Check 1. Compare the flared work with the figure by. Smooth all round Inside is shiny without scratches 2. If a flared section is defective, cut it off and do flaring work again. = Improper flaring = Inclined Surface Cracked Uneven damaged thickness Even length all round Connecting the Piping Indoor Preparing the indoor unit's piping and drain hose for installation through the wall. 1.
Flaring work and connection of piping Connecting the piping with the indoor unit and drain hose with drain pipe 1. Align the center of the pipings and sufficiently tighten the flare nut by hand. Indoor unit tubing Flare nut Pipings 2. Tighten the flare nut with a wrench. Outside diameter mm inch Ø6.35 1/4 Ø9.52 3/8 Ø12.7 1/2 Torque kgf.cm 180~250 340~420 550~660 Spanner (fixed) Flare nut Torque wrench Connection pipe Indoor unit tubing 3.
Flaring work and connection of piping CAUTION: Installation Information For right piping. Follow the instruction below. Good case • Press on the upper side of clamp and unfold the tubing to downward slowly. Bad case • Following bending type from left to right may cause damage to the turbing.
Flaring work and connection of piping Connection of Piping -Outdoor Put a couple drops of refrigerant oil on the face of the flare before assembling taking care not to add any contaminants. Align the center of the pipings and sufficiently tighten the flare nut by hand. Finally, tighten the flare nut with torque wrench until the wrench clicks. • When tightening the flare nut with torque wrench, ensure the direction for tightening follows the arrow on the wrench. Outside diameter mm inch Ø6.35 1/4 Ø9.
Connecting the cable between indoor unit and outdoor unit Connecting the cable between indoor unit and outdoor unit Connecting the Cables 1. Remove the cover control from the unit by loosening the screw. 2. Dismount caps on the conduit panel. 3. Temporarily mount the conduit tubes on the conduit panel. 4. Properly connect both the power supply and low voltage lines to the corresponding terminals on the terminal block. 5. Ground the unit in accordance with local codes. 6.
Connecting the cable between indoor unit and outdoor unit Connection method of the connecting cable(Example) 1. Dismount two-caps on the conduit panel. 2. Make a hole appropriate for the passage of connection cable through on cap by tool. (for low voltage line) 3. Pass the connecting cable through the hole. 4. Properly connect the cable on the terminal block. 5.
Connecting the cable between indoor unit and outdoor unit CAUTION After the confirmation of the above conditions, prepare the wiring as follows: 1) Never fail to have an individual power circuit specifically for the air conditioner. As for the method of wiring, be guided by the circuit diagram posted on the inside of control cover.
Checking the drainage and forming the pipings Checking the drainage and forming the pipings Checking the Drainage To check the drainage. 1. Pour a glass of water on the evaporator. 2. Ensure the water flows through the drain hose of the indoor unit without any leakage and goes out the drain exit. (mm2) Drain piping Downward slope 1. The drain hose should point downward for easy drain flow. 2. Do not make drain piping like the following.
Checking the drainage and forming the pipings Forming the Piping Form the piping by wrapping the connecting portion of the indoor unit with insulation material and secure it with two kinds of vinyl tapes. Seal small openings around pipings with a gum type sealer. • If you want to connect an additional drain hose, the end of the drain outlet should be routed above the ground. Secure the drain hose appropriately.
Air purgingd AIR PURGING Air Purging Air purging The air and moisture remaining in the refrigerant system have undesirable effects as indicated below. 1. Pressure in the system rises. 2. Operating current rises. 3. Cooling(or heating) efficiency drops. 4. Moisture in the refrigerant circuit may freeze and block capillary tubing. 5. Water may lead to corrosion of parts in the refrigeration system.
Air purgingd Soap water method 1. Remove the caps from the 2-way and 3-way valves. 2. Remove the service-port cap from the 3-way valve. 3. To open the 2-way valve turn the valve stem counterclockwise approximately 90°, wait for about 2~3 sec, and close it. 4. Apply a soap water or a liquid neutral detergent on the indoor unit connection or outdoor unit connections by a soft brush to check for leakage of the connecting points of the piping. 5.
Air purgingd Charging ■ Each outdoor unit is factory charged (nameplate charge) for the evaporator as well as a 7.5m(25ft) line set. Any time a line set is used either shorter or longer then the nominal 7.5m(25ft) line set length the refrigerant charge has to be adjusted. ■ Whether the line set is made shorter or longer you must adjust the charge based on how many ft of tubing are either added or removed based on 20g(0.22oz) of R-410A per meter(foot). Capacity (Btu/h) 9k, 12k Pipe Size Suction Evap Ø12.
Air purgingd Panel Front Assembly 1. First, Check the side cover assembly exactly, and fix the power cord in the bottom groove of cover side left. 2. Assemble connecting lead wire with controller, fix the upper part of panel front, and match the lower part of panel front. Panel Front Connector 3. Screw up panel front, and suspend the hook of panel front in the groove.
Test running TEST RUNNING Test Running 1. Check that all tubing and wiring are properly connected. 2. Check that the gas and liquid side service valves are fully open. Prepare remote controller 1. Remove the battery cover by pulling it according to the arrow direction. 2. Insert new batteries making sure that the (+) and (–) of battery are installed correctly. 3. Reattach the cover by pushing it back into position. NOTICE • Use 2 AAA(1.5volt) batteries. Do not use rechargeable batteries.
Test running NOTICE If the actual pressure is higher than shown, the system is most likely over-charged, and charge should be removed. If the actual pressure are lower than shown, the system is most likely undercharged, and charge should be added. PUMP DOWN This is performed when the unit is relocated or the refrigerant circuit is serviced. Pump Down means collecting all refrigerant into the outdoor unit without the loss of refrigerant. CAUTION: Be sure to perform Pump Down procedure in the cooling mode.
How to replace picture & photograph How to replace picture & photograph 1. Turn off power and then open the upper part of front panel. 4. Take out picture. 2. Pull out the both links of lower part of front panel, as described in the below picture. 5. Turn upside-down of the picture and turn over mat, then take off a protective tape attached at the mat. 3. Push and close the top part of the front panel and then pull the bottom part of the panel forward until it is secured. 6.
Operation Operation 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 • Restarting is inhibited for approx. 3 minutes.
Operation The function of main control 1. Time delay Safety Control • 3min.; The compressor operation is delayed for 3 minutes to balance the pressure of cycle. (Protection of compressor) • 5sec.; The indoor fan is delayed for 5 seconds, when operating initially, to prevent noises occurred by the vertical louver and wind. • 2min.
Operation . Auto Operation (Electronic control mode) • The operation procedure is shown below. (Cooling & Heating Model) Press Start/Stop Button Select Auto Operation Mode Check the Room temperature Operation mode Indoor fan speed Setting temperature are decided automatically by the unit electronic control.
Operation ■ Auto Operation for Dehumidification(only Heating Model) • The Setting temperature will be same that of the auto operation for cooling. - Compressor ON temperature; Setting temperature +2°F - Compressor OFF temperature; Setting temperture -1°F ■ Auto Intake-air temp. below 68°F Over 68°F~below 70°F over 86°F Setting temp.
Operation 6. Heating Operation Mode(only Heating Model) The unit will operate according to the setting conditions by the remote controller. The operation diagram is shown below. INTAKE AIR TEMP. SETTING TEMP. +6°F (Compressor OFF) A SETTING TEMP. (Compressor ON) INDOOR FAN SPEED COMPRESSOR B A minimum minimum minimum 10sec. 1 min. 10sec.
Operation 7. Cooling or Heating Mode with Sleep Mode Auto Control • When selecting the Cooling( ) or the Heating( operation diagram is as following. ■ Cooling ) combined with the Sleep Mode Auto Control( ), the Mode with the Sleep Mode • The setting temperature will be automatically raised by 2°F 30 minutes later and by 4°F 1 hour later. • The operation will be stopped after 1, 2, 3, 4, 5, 6, 7 hours. 30 minutes 30 minutes INTAKE AIR TEMP. 2°F 2°F SETTING TEMP. +1°F (Compressor ON) SETTING TEMP.
Operation 8. Forced Operation Operation procedures when the remote control can't be used. The operation will be started if the power button is pressed. If you want to stop operation, re-press the button. ON/OFF button Cooling Heat pump Model Model Room Temp. ≥ 76°F(24°C) 70°F(21°C) ≤ Room Temp. < 76°F(24°C) Room Temp.
Operation Display Function Signal Receptor Receives the signals from the remote control.(Signal receiving sound: two short beeps or one long beep.) Operation Indication Lamps On/Off : Lights up during the system operation. Self-diagnosis Function Error Code 1 Error LED (Indoor body operation LED) (once) 3sec 3sec 3sec (twice) 2 3sec Error contents SVC check point • Indoor room temperature thermistor open/short • Indoor pipe temperature thermistor open/short.
Operation Remote Control Operations The controls will look like the following. 1. START/STOP BUTTON Operation starts when this button is pressed and stops when the button is pressed again. Controls Signal transmitter 2. OPERATION MODE SELECTION BUTTON Used to select the operation mode. 3. ROOM TEMPERATURE SETTING BUTTONS Used to select the room temperature. 4. INDOOR FAN SPEED SELECTOR Used to select fan speed in four steps low, medium, high and CHAOS. 5 5.
Disassembly Disassembly Indoor Unit WARNING: Disconnect the unit from power supply before making any checks. Be sure the power switch is set to "OFF" 1. To remove the Grille from the Chassis. - Pull the grille bottom, the remove 2 securing screws. - Lift the both lower parts of panel front. - After pull down this panel a bit, separate connecting wire with product. Panel Front Connector 2. To remove the Control Box. - Before removing the control box, be sure to disconnect the wires from PWB.
Disassembly 3. To remove the Evaporator. - Remove hole tubing holde. - Remove 2 screws securing the evaporator. - Pull the evaporator out from the chassis carefully. 4. Before removing the Turbo Fan. - Remove the securing screws from the chassis. - Pull the pipe, top cover and the air guide. 5. To remove the Motor. - Remove the securing bolt from the motor shaft. - Pull the fan out from the motor shaft. - Remove 4 screws securing motor mount from the chassis and lift up the motor mount and the bracket.
Schematic Diagram Schematic Diagram Heat Pump/Cooling Only Series(Indoor Unit) Service Manual 47
Schematic Diagram Heat Pump Series/ Cooling Only Series (Outdoor Unit) 48 Room Air Conditioner
Schematic Diagram INDOOR UNIT P.W.B. ASSEMBLY • P/No.
Schematic Diagram OUTDOOR UNIT P.W.B. ASSEMBLY • P/No.
Schematic Diagram DISPLAY P.W.B. ASM • P/No.
Schematic Diagram Wiring Diagram (1) Indoor Unit (Cooling Only Models, & Heating Models) 52 Room Air Conditioner
Schematic Diagram (2) Outdoor Unit(Cooling Only Models, & Heating Models) Service Manual 53
Troubleshooting Guide Troubleshooting Guide Refrigeration Cycle Diagram (1) Cooling Only Models INDOOR UNIT OUTDOOR UNIT LIQUID SIDE CAPILLARY TUBE HEAT EXCHANGE (EVAPORATOR) HEAT EXCHANGE (CONDENSER) GAS SIDE COMPRESSOR (2) Cooling & Heating Models INDOOR UNIT OUTDOOR UNIT LIQUID SIDE CHECK VALVE CAPILLARY TUBE HEAT EXCHANGE (CONDENSER) HEAT EXCHANGE (EVAPORATOR) GAS SIDE REVERSING VALVE COMPRESSOR 54 Room Air Conditioner COOLING HEATING
Troubleshooting Guide Piping Length and Elevation Pipe Size Capacity (Btu/h) 9k, 12k Suction Evap Ø12.7mm(1/2") Ø6.35mm(1/4") Standard Length m(ft) Max. Elevation B m(ft) Max. length A m(ft) Additional Refrigerant g/m(oz/ft) 7.5(25) 7.5(25) 15(49) 20(0.22) Indoor unit Outdoor unit Outdoor unit A B A Outdoor unit Indoor unit Oil trap B A Indoor unit B If piping length is more than 16.
Troubleshooting Guide 3-way Valve Pumping Down Liquid side Indoor unit 3-Way valve Open Outdoor unit Gas side Closed 3-Way valve Lo CLOSE CLOSE Purge the air • Procedure (1) Confirm that both liquid side and gas side valves are set to the open position. – Remove the valve stem caps and confirm that the valve stems are in the raised position. – Be sure to use a hexagonal wrench to operate the valve stems. (2) Operate the unit for 10 to 15 minutes.
Troubleshooting Guide 1) Re-air purging (Re-installation) Liquid side Indoor unit 3-Way valve Closed Outdoor unit Gas side Closed 3-Way valve Gas cylinder Lo Refrigerant OPEN CLOSE • Procedure (1) Confirm that both the liquid side valve and the gas side valve are set to the closed position. (2) Connect the charge set and a gas cylinder to the service port of the Gas side valve. – Leave the valve on the gas cylinder closed. (3) Air purging.
Troubleshooting Guide 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 Lo OPEN CLOSE • Procedure (1) Confirm that both the liquid side and gas side valves are set to the back seat. (2) Connect the charge set to the 3-way valve’s port. – Leave the valve on the charge set closed. – Connect the charge hose to the service port.
Troubleshooting Guide 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 Lo OPEN CLOSE • Procedure (1) Connect the vacuum pump to the center hose of charge set center hose (2) Evacuation for approximately one hour. – Confirm that the gauge needle has moved toward -76 cmHg (vacuum of 4 mmHg or less).
Troubleshooting Guide 3. Gas Charging (After Evacuation) Liquid side Indoor unit 3-Way valve Open Outdoor unit Gas side Open 3-Way valve Check valve Charging cylinder Lo (1) OPEN CLOSE • Procedure \ (1) Connect the charge hose to the charging cylinder. – Connect the charge hose which you dis-connected from the vacuum pump to the valve at the bottom of the cylinder. – If you are using a gas cylinder, also use a scale and reverse the cylinder so that the system can be charged with liquid.
Troubleshooting Guide Additional gas charging (Gas leakage) • When refrigerant is insufficient by leakage, recharge the unit with the refrigerant up to normal operating suction pressure. • Use the graph or the equation below to get operating suction pressure according to indoor and outdoor temperature. Suction pressure was measured at 3-way valve service port after operating the unit for 10 minutes. The method of using graph - Find outdoor temperature.
Troubleshooting Guide Cycle Parts Trouble analysis 1. Check temperature difference between intake and discharge air and operating current. Temp. Difference Operating Current Temp. difference : approx. 0˚F(0°C) Current : less than 80% of rated current • All amount of refrigerant leaked out. Check refrigeration cycle. Temp. difference : approx. 14°F(8°C) Current : less than 80% of rated current • Refrigerant leakege Clog of refrigeration cycle Defective compressor Temp.
Troubleshooting Guide Electronic Parts (9k model) Product does not operate at all. (* Refer to Electronic Control Device drawing and Schematic diagram.
Troubleshooting Guide The product is not operate with the remote controller. 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. (When operated in the Sleeping Mode, the wind speed is set to the low speed by force.) Cause by the remote controller When the mark( battery.
Troubleshooting Guide Compressor/Outdoor Fan are unable to drive. 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 2°F at least. When in Fan 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).
Troubleshooting Guide When indoor Fan does not operate. Does the voltage of each terminals of CN-MOTOR CONNECTOR in Indoor unit corresponds to values in the Table of page 72 Does the voltage of terminal of CN-DC/DC CONNECTOR in Indoor unit corresponds to the values in the table of page 72 Do the voltage of terminal of CN-DC/DC CONNECTOR in Outdoor unit corresponds to the values in the table of page 72 NO Check the patterns and the conditions of outdoor unit PWB Assy's.
Troubleshooting Guide 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-UP/DOWN Connector • Check the soldering condition(on PWB) of CN-UP/DOWN Connector Check the operating circuit of the Vertical Louver • Confirm that there is DC +12V between pin (RED) of CN-UP/DOWN and GND.
Troubleshooting Guide When a comunication error occurs. • The operation indicator of Indoor unit blinks five times. • The red indicator of Outdoor unit blinks five times. Check the connecting wires between Indoor and Outdoor unit for the connecting error and the contacting condition. Check the installation condition of outdoor unit. Check for the communication error and the operating condition of product after also operating with the remote controller, then taking above 2 minutes.
Troubleshooting Guide The phenomena in case of connecting error INDOOR UNIT Connector Type CN-DC/DC Condition Open and connecting error Phenomena • The same as the phenomenon of Outdoor Unit. Blue Black Brown Red CN-MOTOR Open • The indoor fan does not operate. • The operation indicator of Indoor unit blinks 8 times. Open • The up/down vane does not operate. CN-UP/DOWN Short between terminals CN-DISP Open • The up/down vane does not smoothly operate.
Troubleshooting Guide OUTDOOR UNIT Connector Type Condition OPEN CN-POWER Connecting reversely Phenomena • All functions stop. • The operation with the remote controller, forced and test one do not operate. • PWB pattern is damaged when applying the power. OPEN • All functions stop or the compressor does not operate. • The operation with the remote controller, forced and test one do not operate. Connecting reversely • All functions stop.
Troubleshooting Guide Voltage of Connectors according to Indoor Fan Speed Input Power INDOOR FAN MOTOR 1 1 2 3 4 CN-MOTOR INDOOR PWB ASSY 4 3 TAB-N 3 RY-COMP-A 4 RY-COMP-B Connecting wires between Indoor and Outdoor CN-DC/DC 1 2 3 4 5 Indoor Connecting Terminal BL BK BR RD Outdoor Connecting Terminal CN-DC/DC BL BK BR RD 1 2 3 4 12k No. of pins DC Voltage(±10%) INDOOR CNMOTOR INDOOR CNDC/DC OUTDOO R CNDC/DC + - S-Hi Hi Med Low Off 4 3 35.5 32.96 25.17 17.
Exploded View Exploded View Indoor Unit 135316 268711-4 145200-2 146811-2 145200-1 W49800 152302 135080 145200-4 145200 268711-1 249951 135515 268711-3 354210 267110 131410 INLET AIR + EVA MIDDLE 146811-1 266090 567480-1 35211B 352150 135500-2 159830 330870 346810 349600 146811-1 147581 352380 135500-1 359012 NOTE) *Please ensure GCSC since the replacement parts may be changed demending upon the buyer's request. Please check the correct parts in View RPL(Replacement Part List)on GCSC.
Exploded View 2. Outdoor Unit 437212 554031 567480-4 549610 435511 346811 559010 649950 552113 W0CZZ 552116 552202 566000 268711-6 567480-6 SUCTION W6640 567502 554160 447910 437211 550140 552203-2 430410 435301 552203-1 NOTE) *Please ensure GCSC since the replacement parts may be changed demending upon the buyer's request. Please check the correct parts in View RPL(Replacement Part List)on GCSC. (GCSC Website http://biz.Lgservice.
Replacement Parts List Replacement Parts List Parts List(Indoor) PART No. LOCATION No.
Replacement Parts List Parts List(Outdoor) LOCATION No. PART No.
P/No.
