LG DLEX3250 Series Service Manual Download Page 15

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DRYER CYCLE PROCESS

Cycle

Default

Conditions of operation and termination

Temp-

erature

Dry

Level

Display

time

Sensor

Dry *

Manual

Dry **

Steam Fresh

Anti Bacterial

Bulky /

Large

Perm. Press

Cotton /

Normal

Delicates

Steam

Saintary

Speed Dry

Air Dry

HIGH

MEDIUM

Off

Very

Dry

HIGH

LOW

HIGH

HEAT

20min

Saturation

4˚C

45 ±5˚C

38 ±5˚C

(47 ±5˚C)

68±4˚C

60±4˚C

52±3˚C

(68±5˚C)

(66±5˚C)

5min

39min

70min

Normal

Adjustable

LOW

Saturation

45 ±5˚C

52±3˚C

5min

32min

Elec. : 67

Gas : 63

28min

15min

30min

Drying

Cooling

Wrinkle care

Time

Electro-

sensor

Temp-

Control

Default

time

Temp-

Control**

3Hr

Load

Motor

Heater

Temperature Control for each cycle

Off Time: 6min

On Time: 10sec

*Sensor dry : Dry Level is set by users.
**Manual dry : Temperature control is set by users.
Default settings can be adjusted by users.

MEDIUM

Saturation

45 ±5˚C

60±4˚C

5min

55min

Normal

Adjustable

Normal

Adjustable

Normal

Adjustable

COMPONENT TESTING INFORMATION

CAUTION

Component

Test Procedure

Check result

Remark

1. Thermal cut off

• Check Top Marking:

N130

Measure resistance of terminal

to terminal

Open at 266 ± 12°F

(130 ± 7°C)
Auto reset 31°F (35°C)

Same shape as Outlet Thermostat.

If thermal fuse is open must

be replaced

Resistance value

≒

∞

Continuity (250°F

↓

) < 1Ω

• Heater case-

Safety

• Electric type

2. Hi limit Thermostat

(Auto reset)

Measure resistance of terminal

to terminal

Open at 257 ± 9°F

(125 ± 5°C)
Close at 221 ± 9°F

(105 ± 5°C)

Resistance value

≒

∞

Resistance value < 5Ω

• Heater case -

Hi limit

• Electric type

3. Outlet Thermostat

• Check Top Marking:

N85

Measure resistance of terminal

to terminal

Open at 185 ± 9°F

(85 ± 5°C)
Close - Not recover

Same shape as Thermal cut off.

Resistance value

≒

∞

Resistance value < 5Ω

• Blow housing -

Safety

4. Lamp holder

Measure resistance of terminal

to terminal

Resistance value:

80Ω ~ 100Ω

6. Idler switch

Measure resistance of the

following terminal:
COM - NC

1. lever open

Resistance value < 1Ω

2. Lever push (close)

Resistance value

≒

∞

5. Door switch

Measure resistance of the

following terminal
1) Door 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)

Resistance value < 1Ω
Resistance value

≒

∞

Resistance value

≒

∞

Resistance value < 1Ω

The state that

Knob is

pressed is

opposite to

Open

condition.

When checking the component, be sure to turn the power off, and do voltage discharge sufficiently.

Summary of Contents for DLEX3250 Series

Page 1: ...on including by way of email facsimile or other electronic means publication modification copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you have obtained the prior written consent of the LG Electronics entity from which you received this Service Manual The material covered by this prohibition includes without limitation any text graphics or logos in this Service Manu...

Page 2: ...oblems 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 static wrist strap Connect wrist strap to green ground connection point or unpainted metal in the appliance OR Touch your finger repeatedly to a green ground connection po...

Page 3: ...EST 2 THERMISTOR TEST MEZSURE WITH POWER OFF 30 10 3 TEST 3 MOTOR TEST 31 10 4 TEST 4 MOISTURE SENSOR 32 10 5 TEST 5 DOOR SWITCH TEST 33 10 6 TEST 6 HEATER SWITCH TEST ELECTRIC TYPE 34 10 7 TEST 7 GAS VALVE TEST GAS TYPE 35 10 8 TEST 8 SEMI CONDUCTOR 36 10 9 TEST 9 MOTOR ASSEMBLY DC PUMP 36 10 10 TEST 10 GENERATOR ASSEMBLY 37 11 CHANGE GAS SETTING NATURAL GAS PROPANE GAS 38 12 DISASSEMBLY INSTRUCT...

Page 4: ...rding detailed information Specifications are subject to change by manufacturer 8 e g a p e e S 7 e g a p e e S Size 27 X 30 X 38 7 inch Dryer capacity IEC 7 4 cu ft Weight 136 lbs Pedestal 1 each Purchased Separately Stacking kit 1 each Purchased Separately ACCESSORIES See page 6 Dryer rack 1 each ...

Page 5: ...rsible Door Drum Dryer Rack Child Lock Interior Light Product WxHxD Sensor POWER SUPP LY Material Finish Chromate 120V 240V 60Hz 26A 250W 4 5A 5400W 22 5A 15 W 0 2A 13 W 0 11A x 2 1100W 9 2A 2 4W 0 15A Electronic 7 4 cu ft 136 155 7 9 5 5 5 Available Available Available Stainless Steel Available Available Available 27 x 42 3 4 x 28 1 3 Packing WxHxD 29 1 2 x 44 3 4 x 30 3 4 AC 120V AC 240V ELECTRI...

Page 6: ...ns Open the door Hold the dryer rack with both hands Put the dryer rack into the drum Check and be sure that the front of the rack is properly seated behind the lint filter LED Display Cycle Selector Knob Power Button Start Pause Button Dry Level Button Temp Control Button Time Dry Button ...

Page 7: ...e stacking kit Push the front rail back against the stops on the side brackets Do not use a stacking kit with a gas dryer in potentially unstable conditions like a mobile home Stacking Kit Installation Instructions Place the washer firmly on a stable even and solid floor as product installation instructions describe in the owner s manual Do not attempt this alone At least two people are required t...

Page 8: ...bly must be placed on a solid sturdy level floor for proper operation Insert the T clip of the 4 retainers into the dryer base as shown Press up on the back of the clip and pull outward to lock into place Place the dryer on the pedestal Make sure the front and back feet are in the correct positions The dryer feet will fit into the innermost positions as shown Make sure the screws on the pedestal a...

Page 9: ...g 11 2 inch 3 8cm from 3 other wires peel insulation back 1inch 2 5cm Make ends of 3 wires a hook shape Then put the hooked shape end of the wire under the screw of the terminal block hooked end facing rightward and pinch the hook together and screw tightly Use the instructions under option 1 if your home homehas a 4 wire receptacle NEMA type 14 30R If this type is available at your home you will ...

Page 10: ...put the hooked shape end of the wire under the screw of the terminal block hooked end facing rightward and pinch the hook together and screw tightly 1 2 5 cm 3V2 8 9 cm 3 wire connection Direct wire 1 Connect the neutral wire white of the power cord to the center terminal block screw 2 Connect the red and black wires to the left and right terminal block screws 3 Connect the ground wire green of th...

Page 11: ...codes or ordinances permit the connection of a frame grounding conductor to the neutral wire use these instructions If your local codes or ordinances do not allow the connection of a frame grounding conductor to the neutral wire use the instructions under Option 3 Optional 3 wire connection 1 Connect the neutral white or center wire B to the center silver colored screw A and tighten securely 2 Con...

Page 12: ...ra terminal screw is offered whole front type dryer models If you lost a screw you can find another one in the owner s manual assembly and use it Spare Screw with manual Option 4 Lost terminal screw E A D F NOTE ...

Page 13: ...Tighten all connections securely Turn on gas and check all pipe connections internal and external for gas leaks with a non corrosive leak detection fluid 5 For LP Liquefied Petroleum gas connection refer to section on Gas Requirements For further assistance refer to section on Gas Requirements 1 New Stainless Steel Flexible Connector Use only if allowed by local codes Use Design A G A Certified Co...

Page 14: ... C 45 5 C 45 5 C 45 5 C 38 5 C 47 5 C 68 4 C 68 4 C 60 4 C 52 3 C 68 5 C 66 5 C 5min 5min 5min 5min 5min 5min 5min 39min 70min Normal Adjustable LOW Saturation 45 5 C 52 3 C 5min 32min Elec 67 Gas 63 28min 15min 30min Drying Cooling Wrinkle care Time Electro sensor Temp Control Default time Temp Control 3Hr 3Hr Load Motor Heater Temperature Control for each cycle Off Time 6min On Time 10sec Sensor...

Page 15: ...asure resistance of terminal to terminal Open at 185 9 F 85 5 C Close Not recover Same shape as Thermal cut off Resistance value Resistance value 5Ω Blow housing Safety 4 Lamp holder Measure resistance of terminal to terminal Resistance value 80Ω 100Ω 6 Idler switch Measure resistance of the following terminal COM NC 1 lever open Resistance value 1Ω 2 Lever push close Resistance value 5 Door switc...

Page 16: ...ue 10Ω Heater case Hi limit Electric type 9 Motor See Page 13 10 Gas valve valve 1 valve 2 Measure resistance of the following terminal Valve 1 terminal Valve 2 terminal Resistance value 1 5 kΩ Resistance value 1 5 2 5 kΩ Gas type 11 Igniter Measure resistance of terminal to terminal Resistance value 100 800Ω Gas type 12 Flame Detect Measure resistance of terminal to terminal Open at 370 F Maximum...

Page 17: ... 9 F 70 5 C Resistance value Continuity 1Ω Gas type Gas funnel 14 Outlet Thermostat Manual reset Check Top Marking N110 Measure resistance of terminal to terminal Open at 212 12 F 110 7 C Manual reset If thermal fuse is open must be replaced Resistance value Continuity 1Ω Gas type Gas funnel Component Test Procedure Check result Remark ...

Page 18: ... On Off by Centrifugal Switch STOP MODE When Motor does not operate RUN MODE Motor operates When checking component be sure to turn power off then do voltage discharge sufficiently NOTE Centrifugal switch Centrifugal switch Pull Drive forward ...

Page 19: ...19 WIRING DIAGRAM 7 ELECTRIC DRYER WIRING DIAGRAM GAS DRYER WIRING DIAGRAM ...

Page 20: ...SY IRON STEAM OPTION TIME DRY Shirt 70 cotton 30 poly blend Except especially delicate fabrics When the lint filter or exhaust duct is clogged steam options will not give proper results For best results load articles of similar size and fabric type Do not overload The steam feeder must be filled with water up to the MAX line Otherwise an error message will be displayed If the lint filter or exhaus...

Page 21: ...ng cycle nozzle when Steam Cycle starts Steam doesn t generate but no error code is shown Garments still wrinkled after STEAM FRESH There are no creases left on garment after STEAM FRESH Garments have static after REDUCE STATIC Garments are too damp or too dry after REDUCE STATIC Garments are not uniformly damp after EASY IRON Water drips from door during Steam Cycle This is normal Steam vapor is ...

Page 22: ... Outlet thermistor open or shorted tE2 tE2 error is displayed in the drying cycle or test mode Thermistor of steam generator Steam generator thermistor open or shorted tE4 tE4 error is only displayed in the test mode Replace the steam generator Water supply pump When the pump valve is less than 10 in the test mode E5 tE5 error is only displayed in the test mode Check the connection between harness...

Page 23: ...ct vents or hoses decrease efficiency in drying cloths Clogged vents can also cause fire This function alerts you to the need of cleaning the duct When the alarm about Duct clogging is on display of the panel your duct vents should be cleaned by yourself or serviceman 9 1 Flow sensor Flow Sensor Function ...

Page 24: ... test The code will display if the activation is successful 3 Press START PAUSE button The dryer will start the test which will last about two minutes The heat will be turned on and the temperatures in the drum will be measured 4 Check the display for results During the test cycle monitor the FLOWSENSETM display on the control panel If no bars are displayed when the cycle ends the exhaust system i...

Page 25: ...ely long have it repaired or rerouted Keep the area around the dryer clean and free of clutter Check the vent hood for damage or lint clogging Make sure the area around the vent hood is clear FLOW SENSETM indicator shows four bars during the drying cycle or the display drying many turns restrictions ductwork due to lint buildup or debris restriction in the external dryer venting Install a shorter ...

Page 26: ...ype Thermistor open Thermistor shorted tE1 AG Thermistor open or shorted tE4 tE2 Pump Error Pump runs E5 Power off OO Motor runs Displays Moisture Sensor Operation If moisture sensor is contacted with damp cloth The display number is below180innormalcondition 30 High moisture 239 Low moisture Current Temp 5 70 Current Temp 5 70 Pump AD valve 11 255 Electric control Temperature sensor ELECTRIC TYPE...

Page 27: ...0V 125V AC YES NO Check the fuse or circuit breaker Check if the voltage measured between Connector BK2 or WH2 Black Wire Linked to the Controller and WH1 White Wire Is 110 125V YES NO 1 1 2 BK2 or WH2 WH1 BK WH Check if Power Cord is properly connected Reconnect the controller Replace controIler Check if the Controller wire is disconnected Check if Terminal Block and Power Cord are connected Chec...

Page 28: ...s wire and tap relay Black Housing Black tap relay Check the Matching color Between Harness wire and tap relay White Housing White tap relay White Low Extra Low Low Extra Low on on on on on O O O O on off off Temperature Control below 68 4 Turn on Heater1 and Heater2 Temperature Control below 52 4 Only Turn on Heater1 Temperature Control below 70 4 Turn on Burner PCB ASSEMBLY LAYOUT Temperature Co...

Page 29: ...e t i h W d n a k c a l B 1 Off Power Off Wire ྙ ྚ CROSS Items Case Heater1 Operation black Heater2 operation White PCB condition Of operation CAUTION Improper connection of the heater can damage the heater or the main board H CAUTION Connector Housing Black Check the Matching color Between Harness wire and taprelay Black Housing Black taprelay Color Table 2 Connection of tap relay with PCB ASSEMB...

Page 30: ...to Controller NO YES Check if Control and the 6 pin connector are properly connected Replace Controller Check Harness linking connector Take the 6 pin Connector from the Controller Table 1 Resistance for Thermistor Temperature Check if resistance is in the range of Table 1 when measuring resistance between terminals after separating Harness From Thermistor assembly Connector YES NO Replace Thermis...

Page 31: ... connector Replace outlet Thermostat Refer to component Check Idler assembly Drum belt cuts off Drum belt takes off from Motor pulley Replace Idler switch Is resistance below 3 between connector BL2 White wire and WH4 Yellow wire Measure while door is closed Is resistance below 3 between connector WH4 Yellow wire and WH4 Brown wire Is resistance below 1 between terminals of outlet thermostat attac...

Page 32: ... 4 0V Over 4 0V Weight after removing from Washing Machine Damp Dry Completely dried clothes Display Value Voltage DC between 6 Pin terminal P Remark Short with metal to the 6 pin connector s Pin Blue Wire and Pin Orange Wire to Controller When measuring resistance in Electric load is resistance below 1 YES NO When contacting cloth to Electro load 1 Is the measurement within the range of Table 2 d...

Page 33: ... Replace the light bulb Replace the light socket NO NO NO YES YES NOTE This test has two parts The best test of the door switch system is done in the diagnostic mode This FUNCTIONAL TEST will test the door switch wiring harness and PCB operation If the results of this test are normal the door switch system and PCB response are normal The problem is somewhere else FUNCTIONAL TEST Control 1 Enter th...

Page 34: ... and connectors to the element See element component test Check power supply Replace the element NO NO NO NO NO YES YES YES YES YES Measure the resistance between the YL wire on the black tab relay and the BL wire on the white tab relay connectors Is the resistance 36 44 Ω Measure the resistance between terminals 1 RD and the heater housing Is the resistance Ω Refer to the hi limit thermostat and ...

Page 35: ... more than DC 90V 10 sec after Igniter off When measuring terminal resistance on valve 1 and valve 2 valves are more than1 5 2 5k Measure after off If valve 1 and valve 2 are under DC 10V valves are Off Harness check Controller change Check thermostat hi limit safety Check Igniter frame detect Check gas connection or gas supply Change valve Change valve YES YES YES YES YES NO NO NO NO NO NO Valve ...

Page 36: ...onnector Take 6pin Connector from the Controller Test 9 Motor Assembly DC Pump Caution Trouble Symptom Measurement Condition Caution Trouble Symptom Measurement Condition Before measuring resistance be sure to turn Power off and do voltage discharge When discharging contact the metal plug of Power cord with earth line During Diagnostic Test E5 Error occurs Turn the Dryer s Power Off then measure r...

Page 37: ...line ྙ During Steam cycle Generator Assembly is not heating ྚ During Diagnostic Test tE4 Error occurs Turn the Dryer s Power Off then measure resistance Is resistance 14 3 Ω 5 between Heater terminal ྙ and ྚ YES NO Replace the Generator Assembly If measured resistance value is replace the Generator Assembly too Normal condition Caution Trouble Symptom Measurement Condition ...

Page 38: ...Label Instruction Sheet NCU PCU Remove 2 screws Disassemble the pipe assembly Replace Natural Gas orifice with Propane Gas orifice Opened Closed Full open Adjustment screw Close Adjustment screw Orifice Initially H Warning The burner is set for natural gas at the factory The propane orifice conversion kit is sold as a service part to autherized servicers only Part numbers are shown below Changing ...

Page 39: ... IGNITER VALVE 2 FLAME DETECT OPEN GAS VALVE STRUCTURE Adjustment Screw GAS VALVE FLOW START KEY PUSH DRYING F F O 2 E V L A V N O 1 E V L A V VALVE 2 ON IGNITER ON FLAME DETECT OPEN IGNITER TEMPERATURE ABOUT GAS IGNITION FLAME DETECT CLOSE VALVE 2 OFF NO NO YES YES ...

Page 40: ... dryer before servicing WARNING When you disassemble the top plate be sure to take gloves and handle the top plate carefully to avoid cuts Failure to do this could lead to a serious injury WARNING THE DRYER TOP PLATE IS VERY LARGE AND HEAVY Fallure to follow instructions can result in damage to the dryer property damage or personal injury ...

Page 41: ...41 PANEL DRAWER ASSEMBLY 1 Pull out the drawer 2 Lift out the steam feeder 3 Remove 2 screws on the control panel ...

Page 42: ...trol panel assembly upward and then forward 4 Remove 8 screws on the PCB PCB assembly display 5 Disassemble the control panel assembly WARNING When you disassemble the control panel be sure to take gloves and handle the frame and other parts carefully to avoid cuts Failure to do this could lead to a serious injury ...

Page 43: ...oor assembly 4 Remove 2 screws 5 Remove 3 screws from the top of cabinet cover 6 Disconnect the harness of door switch WARNING When you disassemble the door switch connector be sure to take gloves and handle the frame and other parts carefully to avoid cuts Failure to do this could lead to a serious injury ...

Page 44: ...44 1 Remove 3 screws on the frame body 2 Push the Guide assembly to the back side and then lift it 3 Separate 2 hoses from the pump and generator 4 Lift a pump and generator up GUIDE ASM ...

Page 45: ...45 FRAME BODY PANEL FRAME 1 Remove 3 screws on the frame body and then disassemble the frame body 2 Remove 4 screws on the panel Frame and then remove it ...

Page 46: ... idler pulleys 4 Carefully remove the drum DRUM ASSEMB s 1 2 1 1 Open the door 2 Hold the lamp shield in place while removing the screw 3 Slide the shield up and remove 4 Remove the bulb and replace with a 15 watt 120 volt candelabra base bulb 5 Replace the lamp shield and screw CHANGING THE DRUM LAMP When you disassemble the lamp connector be sure to take gloves and handle the frame and other par...

Page 47: ...pe around the joint 5 Insert duct assembly elbow first through the side opening and connect the elbow to the dryer s internal duct WARNING Before performing this exhaust installation be sure to disconnect the dryer from its electrical supply Protect your hands and arms from sharp edges when working inside the cabinet To reduce therisk of personal injury adhere toall industry recommended safety pro...

Page 48: ...emove the Cabinet Cover and Tub Drum Front assembly 3 Remove the Drum assembly 4 Remove 2 screws and cover Air guide 5 Remove the bolt and washer 1 Open the top plate 2 Remove the Cover Cabinet and Tub Drum Front assembly 3 Remove the Drum assembly 4 Remove 7 screws 5 Pull theTub Drum Rear assembly Towards the front 6 Remove the fan 7 Disconnect the motor clamp and motor ...

Page 49: ...e 2 Remove 2 screws 3 Remove the air duct 1 Disassemble the top plate 2 Remove the Cover Cabinet and Tub Drum Front assembly 3 Remove the Drum assembly and Tub Drum Front assembly 4 Disconnect the Air duct from the Tub Drum Front assembly 5 Remove the rollers from the Tub Drum Front assembly and Tub Drum Rear assembly ...

Page 50: ...1 1 Control Panel Plate Assembly Touch LCD type A130 A210 A211 A120 A140 A110 A150 In case before April 2015 Production If Part Assembly AGM75370001 is replaced Main PCB A130 Display PCB A120 have to be replaced all together ...

Page 51: ...51 13 2 Panel Drawer Assembly Guide Assembly K503 K508 K501 A090 A172 A171 A350 K507 K505 K502 A160 A170 K504 K506 A161 ...

Page 52: ...52 13 3 1 Cabinet Door Assembly Electric Type A390 A700 A310 A330 A450 A560 A570 A320 A530 A525 A540 A520 A600 A510 A500 A305 A131 A300 A410 A430 A460 A400 A420 A800 A590 A325 A308 A610 ...

Page 53: ...lectric Type K120 K100 K130 K222 K221 K350 K240 F110 F120 K210 K540 K230 K510 K520 K251 K360 K251 K250 K530 K600 K650 K640 K560 K620 K400 K420 K410 K140 F200 K250 K330 K550 K610 K651 K340 K515 K224 K655 K660 K336 K335 K320 K310 F150 ...

Page 54: ...54 MAR 2017 PRINTED IN KOREA P No MFL62119934 ...

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