LG DLE2250 Series User manual

ELECTRIC & GAS DRYER
SERVICE MANUAL
CAUTION
READ THIS MANUAL CAREFULLY IN ORDER TO
PROPERLY DIAGNOSE PROBLEMS AND TO SAFELY
PROVIDE QUALITY SERVICE ON THESE DRYERS.
U.S.A. Website: http://us.lgservice.com
Canadian Website: http://lg.ca
MODEL : Electric Gas
DLE2250* DLG2251*

2
To avoid personal injury, disconnect power before servicing this product. If electrical power is required
for diagnosis or test purposes, disconnect the power immediately after performing the necessary checks.
!
WARNING !
WHAT TO DO IF YOU SMELL GAS:
IMPORTANT SAFETY NOTICE
The information in this service guide is intended for use by individuals possessing skill and experience in
electrical, electronic, and mechanical appliance repair. Any attempt to repair a major appliance may result
in personal injury and property damage. The manufacturer or seller cannot be responsible for the
interpretation of this information, nor can it assume any liability in connection with its use.
RECONNECT ALL GROUNDING DEVICES
If grounding wires, screws, straps, clips, nuts, or washers used to complete a path 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-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 point or unpainted metal
in the appliance.
Before removing the part from its package, touch the anti-static bag to a green ground connection
point or unpainted metal in the appliance.
Avoid touching electronic parts or terminal contacts; handle electronic control assembly by edges only.
When repackaging failed electronic control assembly in anti-static bag, observe above instructions.
Do not try to light a match, or cigarette, or turn on
any gas or electrical appliance.
Do not touch any electrical switches. Do not use any
phone in your building.
Clear the room, building or area of all occupants.
Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions
carefully.
If you cannot reach your gas supplier, call the fire
department.

3
CONTENTS
1. SPECIFICATIONS ............................................................................................................... 4
2. FEATURES AND BENEFITS ............................................................................................... 6
3. INSTALLATION INSTRUCTIONS .........................................................................................7
4. DRYER CYCLE PROCESS ................................................................................................ 13
5. COMPONENT TESTING INFORMATION ......................................................................... 14
6. MOTOR DIAGRAM AND SCHEMATIC ............................................................................. 17
7. WIRING DIAGRAM ............................................................................................................ 18
8. FLOW SENSOR FUNCTION ............................................................................................. 19
8-1. FLOW SENSOR ....................................................................................................... 19
8-2. INSTALLATION CHECK .......................................................................................... 20
8-3. TROUBLESHOOTING FOR FLOW SENSOR DRYER ............................................ 21
9. DIAGNOSTIC TEST .......................................................................................................... 22
9-1. TEST 1 120V AC ELECTRICAL SUPPLY ............................................................. 23
9-2. TEST 2 THERMISTOR TEST - MEZSURE WITH POWER OFF .......................... 26
9-3. TEST 3 MOTOR TEST .......................................................................................... 27
9-4. TEST 4 MOISTURE SENSOR ............................................................................... 28
9-5. TEST 5 DOOR SWITCH TEST .............................................................................. 29
9-6. TEST 6 HEATER SWITCH TEST - ELECTRIC TYPE ........................................... 30
9-7. TEST 7 GAS VALVE TEST - GAS TYPE ............................................................... 31
9-8. TEST 8 SEMI-CONDUCTOR ................................................................................ 32
10. CHANGE GAS SETTING (NATURAL GAS, PROPANE GAS) ....................................... 33
11. DISASSEMBLY INSTRUCTIONS .................................................................................... 35
12. EXPLODED VIEW ............................................................................................................ 42
12-1. Control Panel and Plate Assembly .......................................................................... 42
12-2-1. CABINET and DOOR ASSEMBLY: ELECTRIC TYPE ........................................ 43
12-2-2. CABINET and DOOR ASSEMBLY: GAS TYPE .................................................. 44
12-3-1. DRUM and MOTOR ASSEMBLY: ELECTRIC TYPE ........................................... 45
12-3-2. DRUM and MOTOR ASSEMBLY: GAS TYPE ..................................................... 46

4
1SPECIFICATIONS
Name: Electric and Gas Dryer
Power supply: Please refer to the rating label regarding detailed
information.
Specifications are subject to change by manufacturer.
See page 7 See page 8
Size : 27 X 30 X 38.7 (inch)
Dryer capacity: 7.1 cu.ft.
Weight: 126(lbs)
Pedestal (1 each)
Purchased Separately
Stacking kit (1 each)
Purchased Separately
ACCESSORIES

Sound levels
On / Off
5
ITEM DLE2250* DLG2251* REMARK
Blue White
Powder coating
Color
Top Plate
Door Trim
ELECTRICITY
CONSUMPTION
MOTOR
HEATER
LAMP
GAS VALVE
CONTROL TYPE
DRUM CAPACITY
Weight (lbs) - Net/Gross
No. of Programs
No. of Dry Options
No. of Temperature Controls
Moisture
Temperature
No. of Dry Levels
Reversible Door
Drum
Child Lock
Interior Light
Product (WxHxD)
Sensor
POWER
SUPPLY
Material &
Finish
Silver color Spray
ELEC.
GAS
120/240V 60Hz (26A)/120/208V 60Hz (23A)
120V/60Hz (5A)
250W (4.5A)
5400W (22.5A)
4100W (21A)
15 W (0.2A)
13 W (0.11A) x 2
Electronic
7.1 cu.ft.
126 / 146
7
9
5
5
Available
Available
Available
Alcosta
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 240V (ELECTRIC MODEL)
AC 208V (ELECTRIC MODEL)
AC 120V
AC 120V (GAS MODEL)
Thermistor
Electrode sensor

2FEATURES AND BENEFITS
6

Peel the protective paper from the tape on
the side bracket.
7
3INSTALLATION INSTRUCTIONS
Secure the side bracket to the washer with
a screw on the back of the bracket. Repeat
Steps 2, 3, and 4 for the other side.
Place the dryer on top of the washer by
placing the legs as shown. Be careful not to
pinch fingers between the washer and dryer.
Slide the dryer back against the stop on the
side rail.
Fit the side bracket firmly to the side of the
top plate by attaching the double-faced tape
to the top plate as picture shown.
Insert the front rail of the 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 to lift and
position the dryer on top of a washing
machine!
Failure to heed this warning can result in
serious physical injury and damage to the
appliance.
WWAARRNNIINNGG
Stacking kit
Attach the front bracket to the side rails with
a screw on each side.
To ensure safe and secure installation, please observe the instructions below.
!

8
Pedestal Installation Instructions
The pedestal accessory includes:
•Drawer divider (1) •Wrench (1)
•Screws (18) † •T-clips (4) ††
Tools Needed for Installation:
•Phillips-head screwdriver
•Wrench (supplied)
† Dryer installation only uses 8 screws
†† For dryer only
To ensure safe and secure installation, please
thoroughly follow the instructions below.
•Incorrect installation can cause serious accidents.
•The appliances are heavy. Two or more people are
required when installing the pedestal. There is a
risk of serious back injury or other injuries.
•Do not allow children to play in or on the drawer.
There is a risk of suffocation or injury.
•Do not step on the handle. There is a risk of serious injury.
•If appliances are already installed, disconnect them
from all power, water, or gas lines and from draining or
venting connections. Failure to do so can result in
electrical shock, fire, explosion, or death.
•When installing, gloves must be put on.
WARNING
Retract fully
Retainer
T-clip
Make sure the leveling feet of the dryer are
fully retracted.
NOTE: The appliance and pedestal assembly
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 align with the
holes in the retainers, then install 4 screws on each
side to securely attach the appliance to the pedestal.
NOTE: If the screws are not installed properly, noise
and vibration may result.
Move the appliance to the desired location.
Securely tighten all locknuts by hand.
NOTE: Noise and vibration may result if locknuts are not
tightened.
Be sure to connect the appliances to all water, power,
or gas lines and draining or venting connections before
operation.
If there is excessive vibration during the first operation
after installation, slightly adjust the leveling feet.
Loosen the locknuts on all 4 leveling feet of the
pedestal until you can turn them with the wrench.
Turn clockwise to raise or counterclockwise to lower
until the pedestal is level and all 4 feet are solidly
against the floor.
For dryer
For washer/combo
Raise Lower
Locknut

9
Use the instructions under option 2 or 3 if your
home has a 3-wire receptacle (NEMA type 10-30R).
Use option 2 if local codes and ordinances permit
the connection of a chassis ground to the neutral
connector. If this is not permitted, use option 3.
Review the following options to determine the appropriate electrical connection for your home:
Electric Dryer Only
If this type is available at your home. you will be
connecting to a fused disconnect or circuit breaker
box
Important :Grounding through the neutral conductor
is prohibited for (1) new branch-circuit installations,
(2) mobile homes, and (3) recreational vehicles, and
(4) areas where local codes prohibit grounding through
the neutral conductor.
Prepare minimum 5ft(1.52m) of length in order for
dryer to be replaced.
First, peel 5 inch (12.7cm) of covering material from
end. Make a 5 inch of ground wire bared. After cutting
1
1
/2inch (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 be
connecting to a fused disconnect or circuit breaker
box
1. Connect neutral wire(white) of power cord to center
terminal block screw.
2. Connect red and black wire to the left and right
terminal block screws.
3. Connect ground wire(green) of power cord to external
ground screw and move neutral ground wire of
appliance and connect it to center screw.
4. Make sure that the strain relief screw is tightened.
and be sure that all terminal block nuts are on tight and
power cord is in right position.
1"
(2.5 cm)
5"
(12.7 cm)
3-wire direct
4-wire receptacle
(NEMA type14-30R)
3-wire receptacle
(NEMA type10-30R)
4-wire direct
5"
(12.7 cm)
4-wire connection : Direct wire
1"
(2.5 cm)
5"
(12.7 cm)
F
a
b
E
D
C

10
Important : Grounding through the neutral conductor
is prohibited for (1) new branch-circuit installations,
(2) mobile homes, and (3) recreational vehicles, and
(4) areas where local codes prohibit grounding through
the neutral conductor.
Prepare minimum 5ft(1.52m) of length in order for
dryer to be replaced.
First, peel 3 1/2inch (8.9cm) of covering material
from end and bare 1 inch from the ends.
1. Connect neutral wire(white) of power cord to
center terminal block screw.
2. Connect red and black wire to the left and right
terminal block screws.
3. Make sure that the strain relief screw is tightened
and be sure that all terminal block nuts are on
tight and power cord is in right position.
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.
1"
(2.5cm)
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 the power
cord to the external ground screw. Remove the
neutral ground wire of appliance and connect it to
center screw.
4. Make sure that the strain relief screw is tightened
and that all terminal block nuts are tight and the
power cord is in the right position.
F
a
b
E
D
C
•lf your local codes or ordinances do not allow the
use of a 3 wire connection, or you are installing
your dryer in a mobile home, you must use a
4-wire connection.
Option 1:4-wire connection with
a Power supply cord.
E
a
D
B
C

11
1. Remove the appliance ground wire (D) (green)
fromthe external ground connector screw and
reconnect it, together with the center, white,
neutral wire (E) to the center, silver colored,
terminal block screw.
2. Connect the other two power cord wires (red and
black) to the left and right terminal block screws
and tighten securely.
3. Tighten the strain relief screws securely.
4. Connect an independent ground wire (F) from the
external ground connector screw to a proper
ground. (The ground wire must be long enough to
allow the appliance to be moved, if necessary, for
service or cleaning.)
C
B
A
lf your local 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. Connect the other two power cord wires (red and
black) to the left and right terminal block screws
and tighten securely.
3. Tighten the strain relief screws (C) securely.
Option 2: 3-Wire Connection with
a Power Supply Cord
•If your local codes or ordinances do not allow the
connection of a frame-grounding conductor to the
neutral wire, use the instructions under this
section.
E
A
D
F
Option 3:Optional 3-wire
connection.

12
3-2. Connect Gas Supply Pipe (Gas Dryer ONLY)
2
3
5
1
4
1. Make certain your dryer is equipped for use with the
type of gas in your laundry room. Dryer is equipped
at the factory for Natural Gas with a 3/8” NP T gas
connection.
2. Remove the shipping cap from the gas connection
at the rear of the dryer. Make sure you do not
damage the pipe thread when removing the cap.
3. Connect to gas supply pipe using a new flexible
stainless steel connector.
4. 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 Connector)
2 1/8” NPT Pipe Plug
(for checking inlet gas pressure)
3 Equipment Shut-Off Valve-Installed within 6’
(1.8 m) of dryer
4 Black Iron Pipe
Shorter than 20’ (6.1 m) - Use 3/8” pipe
Longer than 20’ (6.1 m) - Use 1/2” pipe
53/8” NPT Gas Connection

4DRYER CYCLE PROCESS
13
Cycle
Default
Conditions of operation and termination
Temp-
erature
Dry
Level
Display
time
Drying Cooling
Wrinkle care
Time
Electro-
sensor
Temp-
Control
Default
time
Temp-
Control**
Load
Motor
Heater
Temperature Control for each cycl e
Off Time: 6mi n
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.
Manual
Dry **
SPEED DRY
AIR D
FRESHEN UP
RY Off
Off
Off
HIGH
Mid High
NO
HEAT
Saturation
Saturation
Saturation
(68±5˚C)
(66±5˚C)
5min
5min
5min
25min
30min
20min
3Hr
COTTON /
NORMAL
DELICATES
TOWELS
MEDIUM
LOW
Saturation
Saturation
Saturation
45 ±5˚C
38 ±5˚C
45 ±5˚C
60±4˚C
52±3˚C
66±4˚C
5min
5min
5min
Normal
Adjustable
LOW
Saturation 45 ±5˚C
52±3˚C
5min
32min
41min
28min
55min
HIGH
MEDIUM
Normal
Adjustable
Normal
Adjustable
Normal
Adjustable
Sensor
Dry *
3Hr

14
When checking the component, be sure to turn the power off, and do voltage discharge sufficiently.
!
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
↓
)<1 W
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 < 5 W
Heater case -
Hi limit
Electric type
3. Outlet Thermostat
( Auto reset)
¥ Check Top Marking:
N85
Measure resistance of terminal
to terminal
Open at 185 ±9 F
(85 ±5 C)
Close at 149 ±9 F
(65 ±5 C)
Same shape as Thermal cut off.
Resistance value
≒
¥
Resistance value < 5 W
Blow housing -
Safety
Electric type
4. Lamp holder Measure resistance of terminal
to terminal Resistance value: 80 W ~ 100 W
6. Idler switch Measure resistance of the
following terminal:
COM-NC
1. lever open
Resistance value < 1 W
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 < 1 W
Resistance value
≒
¥
Resistance value
≒
¥
Resistance value < 1 W
The state that
Knob is
pressed is
opposite to
Open
condition.
5COMPONENT TESTING INFORMATION

15
Component Test Procedure Check result Remark
7. Heater Measure resistance of the
following terminal
Terminal: 1 (COM) - 2
Terminal: 1 (COM) - 3
Terminal:2-3
Resistance alue: 10 W
Resistance alue: 10 W
Resistance alue: 20 W
¥ Electric type
8. Thermistor Measure resistance of terminal
to terminal
Temperature condition:
58¡F ~ (10~40¡C)
58¡F ~ 104F (10~40¡C)
Resistance alue: 10 W ¥ Heater case -
Hi limit
¥ Electric type
9. Motor ¥ See Page 17
10. Gas al e al e 1
al e 2
Measure resistance of the
following terminal
Val e 1 terminal
Val e 2 terminal
Resistance alue: > 1.5 k W
Resistance alue: > 1.5~2.5 k W
¥ Gas type
12. Flame Detect Measure resistance of terminal
to terminal
Open at 370¡F ((Maximum)
Close at 320¡F
Resistance alue
≒
¥
Resistance alue < 1 W
¥ Gas type
11. Igniter
5318EL3001
MEQ61841001
Measure resistance of terminal
to terminal Resistance alue
100~800
W
(for 5318EL3001)
40-150
W
(for MEQ1841001)
á Gas type

16
Component Test Procedure Check result Remark
13. Outlet Thermostat
(Auto reset)
•Check Top Marking:
N95
Measure resistance of terminal
to terminal
Open at 203 ±7°F (95 ±5°C)
Close at 158 ±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

17
MOTOR DIAGRAM AND SCHEMATIC
6
Contact 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)

18
GN/YL
3 WIRE SYSTEM
EARTH
4 WIRE
SYSTEM
7WIRING DIAGRAM

8FLOW SENSOR FUNCTION
19
How does the Flow sense function display the clogging of duct ?
This FlowSenseTM function detects the clogging or blocking of ducts.
Clogged duct 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.
The FlowSenseTM display consists of four bars inside
a box. The display has only 2 possible displays
as shown here (Also see the figure shown below):
No bars displayed.
4 bars displayed.
8-1 Flow sensor
Flow Sensor Function
4 Bars NO Bars
CLOGGED
Check and
Clean Duct.
Duct OK. The
Dryer can work.
NORMAL
1
2

20
This feature allows you to quickly verify that the exhaust system is adequate for the normal function of the
dryer. The check takes only two minutes. The results of the check are displayed in the FlowSenseTM
display window as shown below
(Fig. 1). The dryer must be at room temperature for this test to be reliable. To perform this test, start the
machine in standby mode (power off). Press and hold both the SIGNAL ON/OFF and the TEMP CONTROL
buttons together while turning on the dryer with the POWER button. The dryer will start and run for 3 minutes
while it checks temperatures. At the end of this short cycle, it will display the results as follows.
1. Press and hold the SIGNAL ON/OFF and TEMP.
CONTROL button and then press the POWER button.
This button sequence activates the installation test. The
code will display if the activation is successful.
3. Check the display for results.
During the two minute test cycle, monitor the
FLOW SENSETM display on the control panel.
If no bars are displayed, when the cycle ends,
the exhaust system is adequate. If the exhaust
system is severely restricted, the display will
show four bars. Other problems may also be
shown with error codes. Refer to the next page
for error code details and solutions.
4. END of Cycle.
At the end of the test cycle, will display.
The test cycle will end and the dryer will shut off
automatically after a short delay.
NO BARS:
OK
FOUR BARS:
RESTRICTED
2. Press START/PAUSE button.
The dryer will start the test, which will last about two
minutes. The heater will be turned on and the
temperatures in the drum will be measured.
8-2 Installation check
Error Code
tE1 or tE2
HS
PS or PF or nP
Possible Causes
Temperature sensor failure Turn off the dryer and call for service.
Turn off the dryer and call for service.
Check the power supply or the connection of power
cord to the terminal block. Refer to the Connecting
Electric Dryers section of this manual for complete
instructions.
Reset circuit breaker or replace fuse. Do not increase
the fuse capacity. If the problem is a circuit overload,
have it corrected by a qualified electrician.
Humidity Sensor failure
Electric dryer power cord is not
connected correctly, or house
power supply is incorrect.
House fuse is blown, circuit
breaker has tripped, or power
outage has occurred.
Solutions