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LG TD-C70070E Service Manual Download Page 23

22

DIAGOSTIC TEST

10

Test 3 Motor check

Trouble Symptom  :  Motor  malfunction,  Occurrence of the “Clean filter” repeatedly

Measurement condition : • 

Power cord is unpluged.

• Door is closed.
• Check the user condition.

- Put over load into drum?
- Normally Input Voltage and Hertz? 

• Pre-Check door switch  

(If door switch has contact problem, pump motor is not working.)

• When power is on and press

the start button, motor is
rotating.

• Before check process, Check

the motor rotating by the
Diagnostic test mode "See the
19 page".

• Check the harness connection.

- Motor part : Blue 3 pin

housing.

- Controller part : Blue 3 pin

housing ( Orange and Blue
wire ).

• Check the belt ( position /

broken ).

• Check the Controller 

- TR1 , TR2 Broken ? 

• Check the slide ( 3 ea ).

• Check belt is burst.
• Check structural restriction.

( Motor supporter / Air guide
Blower )

• Check or replace Motor 

-  Check Motor TP

• Check Harness connection
• Check the Motor resistance.

(see page 15 )

• During operation, motor noise is

occurred ?

With  BL3 being unplugged
from Controller,

•

BL3

①

- BL3

②

resistance

•

BL3

①

- BL3

③

resistance

•

BL3

②

- BL3

③

resistance

measurement ranges 10

Ω

~20

Ω

?

• Check controller

NO

YES

NO

YES

NO

YES

1 2 3

Summary of Contents for TD-C70070E

Page 1: ...100 CONDENSING DRYER SERVICE MANUAL READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE CORRECTLY BEFORE OFFERING SERVICE MODEL TD C70070E CAUTION ...

Page 2: ...101 SET 2006 PRINTED IN KOREA P No 3828EL ...

Page 3: ...to ground are removed for service they must be returned to their original position and properly fastened IMPORTANT Electrostatic Discharge ESD Sensitive Electronics ESD problems are present everywhere ESD may damage or weaken the electronic control assembly The new control assembly may appear to work well after repair is finished but failure may occur at a later date due to ESD stress Use an anti ...

Page 4: ...N 6 4 PROGRAM CYCLE 7 5 INSTALLATION INSTRUCTIONS 10 6 MAINTENANCE INSTRUCTIONS 12 7 COMPONENT TESTING TIPS 15 8 CONTROL LAY OUT 17 9 WIRING DIAGRAM 18 10 TROUBLESHOOTING GUIDELINES 19 11 DIAGOSTIC TEST 23 12 DIASSEMBLE INSTRUCTIONS 30 13 EXPLODED VIEW 40 CONTENTS ...

Page 5: ...s 50 kg 595 W x 850 H x 600 D 4 1 cu ft Electronic Control AC 220 240V 60Hz 16A 250W 2350W 20W 125mA 250V 5A 240V 25A Electronic 116 Liter Thermal Fuse Motor Over current protect Motor Thermostat Micom electronic Control 1 Temperature 2 thermistors 2 Humidity Electrode Sensor Removable Double screen 54 58 rpm Available Stainless steel Available Available Available Available Available Available Ava...

Page 6: ...ss of the load and the selected program At times you can see sudden increase or decrease of operation time It happens because a sensor will detect laundry humidity with a certain period Sudden change of operation time is not a malfunction Manual Dry Manual Dry allows you to set operation time manually to complete drying Or use Manual Dry if clothes are still damp after sensor dry cycle is finished...

Page 7: ...No 5001EL2001A P No 3751EL1002B 2 Dryer Rack Assembly Purchased Seperately 3 Stacking kit Assembly Holder 2EA Screw 4EA Holder 2EA Screw 4EA Purchased Separately Accessory parts Control panel Water container Door Condenser Cover Air ventilation grill ...

Page 8: ...ion will be remembered and processed Favourite If there is some cycle you would like to make based on your own drying habit use Favourite Once favourite cycle is stored you can repeatedly use next time before changing the stored setting For instance you turn power on and select Extra Dry in Cotton Cycle and Low temp and Anti Crease in series and then lastly press Favourite until the dryer beeps It...

Page 9: ...ea towels towel For thick and quilted fabrics which do not need to be ironed More bed linen Bath towels tea towels For fabrics which do not need to be ironed Normal underwear cotton socks T shirts trousers underwear For fabrics which do need to be ironed lightly not completely Less work clothes Bed linen table linen towels T shirts For fabrics which do need to be ironed Damp Polo shirts and work c...

Page 10: ... 40 Wool Delicate O O O O O O O O O X X X X X X O O O O O O O O O O O O O O O O O O O O O O O O O O O X O O 125 120 115 103 97 90 53 48 41 20 40 20 40 69 45 O O O O O O O O O X X X X X X Cotton Mixed Fabric Timed Drying Special Fabric Course Course detail HighTemp Buzzer off Wrinkle care Left Time LowTemp ...

Page 11: ...event undesirable noise and vibration When placing your dryer in an solid and level area where water is not dripping and freezing flammable materials are not stored 2 If the dryer is not properly level adjust the front levelling legs up and down as necessary Turn them clockwise to raise and counterclockwise to lower until the dryer is not wobbling both front to back and side to side Diagonal Check...

Page 12: ...rlier to assemble dryer rear back and stacking kit Use accessory screws to assemble washer rear cover and stacking kit The procedure for the opposite side will be the same WARNING When Placing the dryer pull power cord out of a power source Don t drop the dryer 600 mm 600 mm 500 mm Stacking Kit In order to stack this dryer on LG Washing machine you must purchase the LG stacking kit that is fitted ...

Page 13: ...up of lime scale on the surface of sensor Wipe the sensors inside drum Shown in the picture 1 Unscrew cover 2 Take connecting kit out 3 Separate water container hose from the kit 4 Connect drain hose to the kit Condensed water Drain out Normally condensed water is pumped up to water container where water is collected until emptied Not only using water container but water can be drained out directl...

Page 14: ...inge of the door first and top hinge And then place on the blanket to prevent scratches 2 Remove the door lock cover 3 Remove the door lock and replace where door lock cover is located 7 Replace the door catch to the reverse location 8 Screw the door hinges CAUTION 1 This work may cause the injury of your hands so you must be careful to handle some sharp devices like tork screwdriver or slotted sc...

Page 15: ...tain amount of the force 4 Remove the current bulb turning it to counter clockwise direction Be careful that it does not fall off 5 Screw in the new bulb in the reverse unscrewing direction 6 With the bulb cover held by a hand turn it to the counterclockwise with a certain amount of the force until you listen to click sound 3 Seperate the bulb cover from the socket housing Do not need any special ...

Page 16: ...inal Measure resistance of Terminal to terminal Measure resistance of Terminal to terminal Measure resistance by pressing button When resistance becomes Resistance value 5Ω Safety Thermostat Cover Front Heater Resistance value 10KΩ 5 at 25 C Resistance value Yellow White 28 96 1Ω Blue White 56 29 2Ω Resistance value 200KΩ 5 at 25 C Resistance value White Blue 24 8 2 5Ω Blue Red 21 5 2 0Ω Resistanc...

Page 17: ...or switch knob open Terminal COM NC 1 3 Terminal COM NO 1 2 2 Door switch push Push Terminal COM NC 1 3 Terminal COM NO 1 2 Measure resistance of terminal to terminal Resistance value 1Ω Resistance value Resistance value Resistance value 1Ω The state that knob is Pressed is opposite to open condition Resistance value 80Ω 100Ω AC 230V 20W COM NC NO ...

Page 18: ...HITE ORANGE YELLOW RED BLACK BLUE BLUE BLUE BLUE ORANGE THERMISTOR OUTLET MOISTURE SENSOR GREEN YELLOW ELECTRONIC CONTROL PUMP SENSOR PUMP MOTOR ORANGE BLUE BROWN BROWN SKY BLUE SMALL COLL THERMOSTAT HEATER LARGE COLL THERMISTOR INLET SKY BLUE BLUE WH1 1 1 2 1 RLY3 RLY2 BL3 RLY1 RD4 WH8 RLY4 WHITE RED GREEN GREEN YELLOW 바탕 줄 1 2 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 2 3 1 1 2 2 3 1 2 3 4 1 1 2 2 3 3...

Page 19: ... operation mode Press the Low Temp and Time Down button as follows Checkpoints No of Button pressing Display None Check LED lamps Motor run clockwise Humidity data Motor run clockwise Humidity data Motor run clockwire Heat 1750W On Motor run clockwise Heat 1750W on Heat 750W On Motor On Motor run counterclock wise End Moisture Pulse count normal 1 Increase Moisture Pulse Width time 100ms normal 1 ...

Page 20: ...othes Load Motor malfunction Low temperature Harness Wire broken Led broken Display pcb wire broken Power button Lock No buzzer Circuit breaker trip Low voltage Led Segment On Drum not Roating Door Open Rotating Lamp on Lamp Broken Connector malfunction Check Heater Power Thermostat trip Check thermistor open short Fan Properly Drying See the Page 24 check list Replace Belt Clean filter and Conden...

Page 21: ...controller 2 2 RLY3 RLY1 YES NO NO YES YES NO Power voltage is within standard range AC 215V 245V Check the short of harness assembly and the connection WH1 Check after pulling Black RLY1 Blue RLY3 2 pin connector out from controller Check the range of two pin Red Black is within AC 215 245V Check the Circuit breaker Check or replace the controller Check or replace the power cord Check connection ...

Page 22: ...essed lamp turns off and controller is working but the dryer is not working When door is opened lamp turns on Tumbling stops When door is opened or closed door switch hook is not broken Check or replace Controller Assembly Replace Harness and connector With door closed check voltage of connector RLY1 RLY3 which are pulled out from controller in advance The voltage range is between AC 215 245V When...

Page 23: ...ting by the Diagnostic test mode See the 19 page Check the harness connection Motor part Blue 3 pin housing Controller part Blue 3 pin housing Orange and Blue wire Check the belt position broken Check the Controller TR1 TR2 Broken Check the slide 3 ea Check belt is burst Check structural restriction Motor supporter Air guide Blower Check or replace Motor Check Motor TP Check Harness connection Che...

Page 24: ...ith RLY1 RLY2 RLY3 disconnected from Controller RLY2 Yellow RLY3 Blue resistance ranges 26Ω 32Ω RLY1 Blue RLY3 white resistance ranges 53Ω 59Ω Check and replace controller Relay RTY2 RTY3 See page 15 PCB assembly lay out When check thermostat to Heater it is less than 1Ω Replace Heater Check Harness connection Check or replace Controller Assembly Replace Harness and connector Heater On Off occurs ...

Page 25: ...2 3 Measure with power on On QC test mode when Pump is on Electric noise doesn t occur Electric noise doesn t occur while pumping Measure after power is off With YL3 disconnected from Controller YL3 YL3 resistance ranges 205 10Ω Check Pump sensor Check and replace Controller TR3 Disassemble Pump Check foreign objects Check impeller restriction Check connection hose clogged Check or replace pump Ch...

Page 26: ... C 50 60 C 60 C 250 180kΩ 180 113kΩ 113 75kΩ 75 50kΩ 50kΩ 5 4kΩ 4 2 5kΩ 2 5kΩ 19 111kΩ 11 8kΩ 8 5kΩ 4 3 2 RD4 WH8 1 1 2 3 4 5 6 7 8 With RED 4 WHITE 8 disconnected from Controller check 1 High temperature thermistor Wire color Blue White 8 pin White 8 pin resistance ranges table data according to surrounding temperature 2 Low temperature thermistor Wire color Blue Red 4 pin Red 4 pin resistance ra...

Page 27: ...jects Refer to the left picture Check Harness Open Connector is disconnected With metal tape attached to Sensor tips RD4 RD4 resistance is less than 10Ω After damp clothes touch Sensor tips the range are within the below table when QA test NO YES YES NO NO Check and replace Controller 4 3 2 RD4 1 With RD4 disconnected from Controller RD4 RD4 resistance is unlimited Metal Wire ...

Page 28: ...r of the dryer DRAWER TOP PLATE Note 1 Assemble wires at the HOOK surely when you reassemble 2 Disassemble Safety Cover by unscrewing 2 screws on the top of the dryer 3 After pulling drawer assembly out unscrew 1 screw 4 Untie Keeping wire and then connector 2ea disassemble from MAIN PCB ...

Page 29: ...over by releasing hook 2 3 After releasing 2 levers disassemble safety cover 3 Disassemble 3 screws 4 Disassemble the case with a Philips driver by releasing hook 1 After releasing 4 hooks of control panel assembly separate connectors from PWB assembly for disassembling control panel assembly COVER LOWER COVER SAFETY ...

Page 30: ...IONS 11 1 Disassemble grille by releasing 3 hooks 2 Disassemble cabinet cover by releasing 9 screws 3 Disassemble cabinet by unscrewing 2 at the top and 3 at the rear left and right are the same GRILLE CABINET COVER CABINET ...

Page 31: ...m TOP FRAME by rotating after unscrewing 2 screws 3 Disassemble Holder and Spring by pressing down and pulling the low hook of holder 11 DIASSEMBLY INSTRUCTIONS TOP FRAME 90 90 HOLDER Large Gap Small Gap Motor Holder Note Be carefal of the direction of Spring hanger during assemble to prevent possible noise ...

Page 32: ...ws Note Make sure that hook is properly fit after assembling Cover Base Wrong assembly will cause abnormal noise 2 Disassemble Motor Supporter from Base by rotating after unscrewing 2 screws 3 Disassemble Air Guide Note Assembly direction of Air Guide should be same as belows Wrong assembly will cause abnormal noise ...

Page 33: ... Duct and Cover Protect by unscrewing Note marked 3 screws on the lower position of Duct are only used for molding parts Be careful of not using them for other holes Otherwise the holes will be exposed to water leak 3 Disassemble Power cord by unscrewing 1 Earth screw after unscrewing 2 screws ...

Page 34: ...IONS 11 1 Disassemble Nut by grasping the edge of left motor shaft at the same time 2 Disassemble Heater Housing by detaching inner Connector harness and unscrewing 3 Disassemble Heater by unscrewing 2 screws HOUSING HEATER ...

Page 35: ...34 DIASSEMBLY INSTRUCTIONS 11 FRAME TOP BASE COVER FRONT 1 Disassemble Frame Top by unscrewing 4 screws Left and right are same 2 Unscrew 4 screws at the left and right 3 Unscrew 1 screw at the front ...

Page 36: ...5 DIASSEMBLY INSTRUCTIONS 11 DISPENSER HOSE HOLDER COVER FRONT 1 Disassemble Cover Front by pulling the top area out 2 Disassemble Hose from hose holder at the base 3 Disassemble Dispenser by unscrewing ...

Page 37: ...36 DIASSEMBLY INSTRUCTIONS 11 1 Disassemble Back cover from the Base by unscrewing 2 screws 2 Disassemble Drum BACK COVER ...

Page 38: ...37 DIASSEMBLY INSTRUCTIONS 11 Safety Cover 1 Disassemble Safety Cover by unscrewing 3 screws 2 Disassemble Motor 3 Disassemble Drain Pump by Unscrewing 2 screws DRAIN PUMP ...

Page 39: ...38 EXPLODED VIEW 12 Control Panel Top plate Assembly A110 A111 A120 A114 A115 A113 A112 A130 A140 A150 A100 A170 NON SVC Parts SVC Parts ...

Page 40: ...ODED VIEW 12 Cabinet Cover Door Assembly B101 B105 B103 B104 B102 B106 B100 B108 B141 B140 B121 B136 B120 B122 B123 B130 B131 B128 B150 B142 B129 B127 B126 B125 B134 B133 B132 B160 B124 NON SVC Parts SVC Parts ...

Page 41: ...40 EXPLODED VIEW 12 Base Motor Assembly C100 C120 C110 C130 C140 C141 C160 C142 C150 C180 C170 C200 C240 C230 C210 C220 C250 C260 C270 C280 C290 C310 C300 C191 C320 C190 NON SVC Parts SVC Parts ...

Page 42: ...W 12 Back Cover Drum Assembly D152 D155 D200 D190 D151 D157 D160 D131 D130 D230 A160 D201 D153 D156 D250 D260 D150 D154 D170 D180 D210 D100 D110 D120 D121 JOURNAL BEARING SERVICE KIT D122 D123 NON SVC Parts SVC Parts ...

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