LG LDF 7810WW User manual

DISHWASHER
SERVICE MANUAL
BEFORE SERVICING THE UNIT, PLEASE READ THIS MANUAL CAREFULLY
FOR SAFETY AND CORRECT SERVICES.
NOTE
MODEL : LDF7810WW / LDF7810BB / LDF7810ST
MODEL : LDF7811WW / LDF7811BB / LDF7811ST
LDS5811WW / LDS5811BB / LDS5811ST
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1. CAUTION......................................................................................................................... 4
2. SPECIFICATIONS ........................................................................................................... 5
3. WIRING DIAGRAM........................................................................................................ 6
4. FEATURES & TECHNICAL EXPLANATION ................................................................... 7
5. PARTS NAME................................................................................................................ 13
6. PROGRAM CHART ..................................................................................................... 15
7. HOW TO DISASSEMBLE ............................................................................................ 16
8. TROUBLE SHOOTING METHODS.............................................................................. 25
A. TROUBLE SHOOTING ACCORDING TO DISPLAYED ERROR MESSAGE.......... 25
B. TROUBLE DIAGNOSES AND REPAIR BY SYMPTOM........................................... 27
9. INSTALLATION INSTRUCTION ................................................................................... 31
10. EXPLODED VIEW .......................................................................................................37
11. REPLACEMENT PART LIST ........................................................................................45
CONTENTS
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DISCONNECT POWER CORD BEFORE SERVICING
RECONNECT ALL GROUNDING DEVICES
IMPORTANT SAFETY NOTICE !
This service information is intended for individuals
possessing adequate backgrounds of electrical,
electronic and mechanical experience.
Any attempt to repair this appliance may result in
personal injury and property damage.
The manufacturer or seller can not be responsible
for the interpretation of this information, nor can it
assume any liability in connection with its use.
CAUTION !
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2. SPECIFICATION
Rated Voltage / Frequency AC 120V/60Hz
Installation Built-In
Place Settings 16
Product Dimension(in) 23 7/8
〃x 25〃x 33 7/8〃
Product Weight(lbs) 7811/7810 series : 115lbs, 5811 series : 110lbs
Door Color White, Black, Stainless
Tub Material Stainless Steel
Control Electronic
Rated Power(Watt) 1,350
Heater Power(Watt) 1,200
Programs 6
Upper Rack Position Adjustable
Lower Rack 50% Fold down
Water Consumption 21-30 (Normal)
Power Consumption(kWh/year) 370
Operating Time (min) 101-135 (Normal)
Fan Dry System Yes
Delay Start Function Yes
Auto-Off Power Switch Yes
Process Monitor Yes
Wash Level 5
Racks Nylon Coating
Operating Water Pressure (Bar) 20-120 (140-830kPa)
ITEM SPECIFICATION
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3. WIRING DIAGRAM
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4. FEATURES & TECHNICAL EXPLANATION
4-1. Product Features
If you raise the Upper Rack, you can load large dishes in the Lower Rack.
(Max. 14 in.)
The tall tub provides large dishes loading as well as large capacity.
LG dishwashers let you load oversized items in the Lower and Upper Rack.
Newly introduced Slim Direct Inverter motor is inverter-controlled. Speed is
controlled based on program selection. It also offers high energy efficiency to
minimize energy loss.
This is one of the best performance solutions for drying dishes because it
minimizes venting humid air to the outside of the dishwasher. In addition, this
system ensures better drying results compared to the condensing drying
system.
Because of alternating water spray between the Upper and Lower
Rack, the water pressure allows superior performance and reduced
consumption of water and electricity.
For best wash results, the self-cleaning filter system continuously cleans the
water as it circulates. Your LG dishwasher has a self-cleaning filter that grinds
food into small particles before it goes down the drain.
■■Ultra Big Capacity
■■Slim Direct Inverter Motor
■■Hybrid Drying System
■■Vario Spray System
■■Self Cleaning Filter
Moist
Air
Dry
Air
Mixed
Air
to
Upper
Arm
to
Lower
Arm
Soil Sensor
Fine Mesh
to Drain
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4-2. Display Panel
4-2-1. LDF 7811/7810 Series
PROGRAM
• Press the program that
corresponds to your
desired wash cycle.
CANCEL
•To cancel a running
program, open the door,
then press and hold the
Normal and Delicate
buttons for 3 seconds.
INDICATOR
•Child lock: Lamp will turn on
when Child Lock setting is on.
•Rinse Aid: Refill with Rinse aid
when Lamp turns on.
This program is for very heavily soiled loads including pots,
pans and casserole dishes which may have dry food residue.
This program is for very heavily soiled loads
This program is for normally soiled everyday loads.
This program is for washing delicate items like glasses.
This program is for that quick wash of lightly soiled recently
used dishes and cutlery.
This program is for very lightly soiled loads.
Soak
Normal
Quick Wash
Rinse Only
Delicate
Power Scrub
Control panel may vary on some models.
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SPRAY
(INTENSITY)
•Repeated pressing of the
Spray button will select
Strong, Medium or
Soft.
DELAY START
•If you want to delay the start of
a selected program, press the
Delay Start button.
•Each press of Delay Start will
delay the start of the cycle by
one hour.
•The delay start time can be
adjusted from 1 to 24 hours in
one-hour increment.
HALF LOAD
•In case of a small load, use the
upper or lower rack only to save
energy.
•Each press of the Half Load
button cycles between upper
rack only and lower rack only.
•If you don't press Half Load,
the dishwasher runs normally,
i.e, operation of upper and
lower spray arm alternating
periodically.
POWER
•For operating, press this
button first for power on.
•After operating, the power
automatically switches off
for safety and economy.
•In case of an unusual Power
surge or disturbance, the
power may be automatically
turned off for safety.
CHILD LOCK
•Lock the control buttons
to prevent the settings
from being changed.
•To lock/unlock, press
Spray and Rinse
buttons simultaneously
for 3 seconds with door
open.
SANITARY/
EXTRA RINSE
•Repeated pressing of the
Rinse button will select
Sanitary, Extra Rinse
or both.
•If you select the Sanitary
function, the temperature
of Heating Rinse can
reach 161。F (72℃).
•When you select Extra
Rinse, an additional
rinse cycle is added.
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Strong
Medium
Soft
Spray Rinse Half Load Soak
Sanitary
Extra
Rinse
Upper
Lower
SPRAY
(INTENSITY)
•Repeated pressing of the
Spray button will select
Strong, Medium or
Soft.
CHILD LOCK
•Lock the control buttons
to prevent the settings
from being changed.
•To lock/unlock, press
Spray and Rinse buttons
simultaneously for 3
seconds.
SANITARY/
EXTRA RINSE
•Repeated pressing of the
Rinse button will select
Sanitary, Extra Rinse
or both.
•If you select the Sanitary
function, the temperature
of Heating Rinse can
reach 161。F (72℃).
•When you select Extra
Rinse, an additional
rinse cycle is added.
HALF LOAD
•In case of a small load, use the
upper or lower rack only to save
energy.
•Each press of the Half Load
button cycles between upper
rack only and lower rack only.
•If you don't press Half Load,
the dishwasher runs normally,
i.e, operation of upper and
lower spray arm alternating
periodically.
4-2-2. LDF 5811 Series
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Soak
Power
Scrub
Quick
Wash
Rinse
Only
Normal
Cancel
Delicate Power
Delay Start
INDICATOR
•Child lock: Lamp will turn
on when Child Lock
setting is on.
•Rinse Aid: Refill with
Rinse aid when Lamp turns
on.
PROCESSING
INDICATOR
•Current program
phase is indicated.
TIME LEFT
•Before starting, the display window shows
the running time of the selected program.
•After starting, the display window shows
the remaining time.
•If the dishwasher has a trouble, the trouble
type is displayed.
PROGRAM
•Press the
program that
corresponds to
your desired
wash cycle.
CANCEL
•To cancel a
running program,
press and hold
the Normal and
Delicate buttons
for 3 seconds.
DELAY START
•If you want to delay the start of
a selected program, press the
Delay Start button.
•Each press of Delay Start will
delay the start of the cycle by
one hour.
•The delay start time can be
adjusted from 1 to 12 hours in
one-hour increment.
POWER
•For operating, press this
button first for power on.
•After operating, the power
automatically switches off
for safety and economy.
•In case of an unusual Power
surge or disturbance, the
power may be automatically
turned off for safety.
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4.3 TEST MODE
CHECK PROGRAM
BUTTON The number of
pushing button Front Display
Top
Display Load and Checking points Door open/ closed
Rinse + Time Delay +
POWER S/W
Soak
Power Scrub
Normal
Delicate
Quick Wash
Rinse Only
Supply
Rinse
Half Load
Time Delay
Normal Water Level : 315
Pure Water : more than 229
1 TIME
1 TIME
1 TIME
1 TIME
1 TIME
1 TIME
1 TIME
1 TIME
1 TIME
1 TIME
1 TIME
2 TIME
3 TIME
4 TIME
5 TIME
6 TIME
7 TIME
8 TIME
9 TIME
10 TIME
11 TIME
12 TIME
13 TIME
31
32
33
34
35
36
37
38
39
3A
3b
3c
n : 3H/U:023H/U2
11
22
33
44
55
66
77
88
99
1 : 11
2 : 22
3 : 33
4 : 44
5 : 55
6 : 66
7 : 77
8 : 88
9 : 99

Soil Level
n : 02
n : 03

Frequency
n : 05
n : 06
n : 07
n : 08
Temp. ()
n : 0A
n : 0b
n : 0c
Soil Sensor
Wash Pump
Drain Pump
Inlet Valve
Dispenser
Heater
(for 10 sec)
Fan
Thermistor
Lower Nozzle
(VARIO)
Upper Nozzle
(VARIO)
Wash-Drain-
Water Supply
Auto-Off
Delay Start
Child Lock + Rinse
Aid
Wash
Rinse
Dry
Wash-Rinse-Dry
Strong-Soft
Sanitary-Extra
Upper-Lower
Soak-Normal
Delicate-Rinse
Only
Rinse Aid
All LEDs are lighting Both
All LEDs are lighting
All LEDs are lighting
All LEDs are lighting
All LEDs are lighting
All LEDs are lighting
All LEDs are lighting
Strong/Medium/Soft
Sanitary-Extra Rinse
Upper-Lower
Both
Both
Both
Both
Both
Both
Both
Both
Both
Both
Closed
Closed
Both
Closed
Closed
Closed
Both
Closed
Closed
Closed
Closed
Supply water before operating the Test Mode.
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5. PARTS NAME
Control Panel
Front Display
Door Handle
Front Cover
Lower Cover
Leveling Foot
Side Cabinet
Base
Top Spray Arm
Upper Spray Arm
Removable Tines
Lower Spray Arm
Detergent & Rinse Aid Dispenser
Vapor Vent Cover
Upper Rack
Cutlery Basket
Lower Rack
Top Display
Power Button
The appearance and specifications may be varied without notice according to localities.
INSTALL BRACKET WOOD SCREW
5-1. LDF 7811/7810 Series
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Control Panel
Front Display
Door Handle
Power Button
Front Cover
Lower Cover
Leveling Foot
Side Cabinet
Base
Top Spray Arm
Upper Spray Arm
Removable Tines
Lower Spray Arm
Detergent & Rinse Aid Dispenser
Vapor Vent Cover
Upper Rack
Cutlery Basket
Lower Rack
The appearance and specifications may be varied without notice according to localities.
INSTALL BRACKET WOOD SCREW
4-2. LDF 5811 Series
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6. PROGRAM CHART(SCHEMATIC DIAGRAM)
Drain A
26 10 10 46 10 10 30 30
49 65 72
18 10 10 38 10 10 26 30
63 68
10 10 10 30 10 20 30
60 65
10 10
61
22 10 26 30
49 68
86 20
20
46 60
10 30 8 30 3 30
W/Motor Drain Pump Inlet Valve Heater Vario Motor Fan Motor Dispenser Thermal Act Auto Off S/W
Program chart
Rinse Dry
Main Wash
Wash Rinse 1 Rinse 2 Heating Rinse Dry
Program
Wash
Wash
Wash
Rinse
Stop
Stop
Stop
Wash
Wash
Wash
Wash
Wash
Water Supply
Water Supply
Water Supply
Water Supply
Water Supply
Water Supply
Water Supply
Water Supply
Wash
Drain
Drain
Drain
Drain
Drain
Heating A
Heating B
Dry
Drain D
Drain
Drain
Drain
Stop
Stop
Drain
Drain
Water Supply
Water Supply
Stop
Drain C
Drain
Water Supply
Water Supply
Rinse
Drain
Drain
Drain
Drain
Drain
Drain
Drain
Drain
Drain
Drain B Drain B Drain C
Drain
Drain
Drain
Stop
Drain
Drain
Stop
Pre Wash 1 Pre Wash 2 Pre Wash 3
Drain B Drain B
Wash
Wash
Wash
Wash
Drain
Stop
Water Supply
Wash
Power Scrub Soak Rinse Only Quick Fine China NORMAL
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BEFORE DISASSEMBLING THE DISHWASHER ;
1) Remove the cord from electric outlet to avoid electric shock.
2) Close the Water Tap (faucet).
3) Remove all dishes and items in the dishwasher.
4) Remove the Lower Rack and the Upper Rack.
5) Remove the inlet hose and drain hose connetion to avoid the hose damages.
6) Prepare some towels to avoid floor wet by the water left in the dishwasher.
7. HOW TO DISASSEMBLE
7-1. FULL DISASSEMBLE
1. Lower Cover and Lower Felt
1) Remove the front 2 screws.
2) Pull the Felt.
3) Remove the Inlet Hose and Power Supply
Cable.
2. Cabinet and Tub Felt
1) Cabinet-R
Remove front 2 screws.
Remove rear 3 screws.
2) Cabinet-L
Remove front 2 screws.
Remove rear 3 screws.
3) Tub Felt
Lower Felt
Lower Cover
Tub Felt
Cabinet-L
Cabinet-R
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Control Panel Front Cover
Controller
Controller
Latch Assembly
F
ront Display
3-1. Door Assembly
(LDF7811/7810 Series)
1) Front Cover
Open the door.
Remove 12 screws(stainless).
2) Control Panel Assembly
Remove 2 screws(Stainless).
Remove the wire connections.
Be sure the wiring should not be
changed in reassembling
Remove the Latch assembly.
Remove the Front Display.
Remove 8 screws for Controller.
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Control Panel Front Cover
Controller
Controller
Latch Assembly
3-2. Door Assembly
(LDF 5811 Series)
1) Front Cover
Open the door.
Remove 6 screws(Stainless).
2) Control Panel Assembly
Remove 8 screws(Stainless).
Remove the wire connections.
Be sure the wiring should not be
changed in reassembling
Remove the Latch assembly.
Remove 8 screws for Controller.
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F
an Assembly
Inner CoverGasket
Flange
Detergent
Dispenser
Door Hinge
Air Duct
Door Bracket
H
inge Bracket
H
inge Spring
3) Fan Assembly
Open the door.
Remove 4 screws and a earth screw for
Door Bracket.
Remove the wire connetions.
Remove the Air Duct.
Turn the Inner Cover counterclockwise.
4) Detergent Dispenser
Close the door
Remove the wire connections.
Remove 6 screws with brackets.
Push the Detergent slowly pulling up the
the Flange by Standard Screwdriver.
5) Door Spring (Right & Left)
Push the Spring upwards and take it off
from the Hinge Bracket.
Be careful not to be injured by the
sharpedge of Tub.
Take off the Hinge Link from the Hinge.
6) Door Liner
Open the door.
Pull the Door Liner and take it off from
the Hinge Supporter.
D
oor Liner Assembly
Hinge Supporter
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Lead Wire Holer Hook
Lead Wire Holer
Lower Frame
Drain Hose
D
rain Hose
H
older
4. Lower Frame
1) Press the holder hook as shown in figure.
2) Remove 4 screws.
6. Drain Hose Holder
1) Press the holder hook as shown in figure.
2) Pull the Drain Hose and remove the Drain
Hose Holder.
5. Put the Dishwasher upside down.
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Base Cover
Cabinet Base
7. Base Cover
1) Remove 2 screws.
2) Pull the Base Cover out.
8. Harness & Hose Assembly
1) Remove the wiring connections.
2) Remove the Hose connections from
Sump Assembly.
You can see the information of Wiring
Diagram at the back of Lower Cover.
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