LG LDF7810xx, LDF7811xx Service Manual
Dishwasher
MODEL : LDF 781 1WW / LDF 7811BB / LDF 781 1ST
Moist
Air
Dry
Air
Mixed
Air
to
Upper
Arm
to
Lower
Arm
D
■■
Ultra Big Capacity
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.
DISHWASHER FEATURES
■■
Slim Direct Inverter Motor
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.
■■
Hybrid Drying System
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.
■■
Vario Spray System
Because of alternating water spray between the upper and lower
racks, the water pressure allows superior performance and reduced
consumption of water and electricity.
■■
Self Cleaning Filter
Soil Sensor
to Drain
2
Fine Mesh
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 in to small particles before it goes down the drain.
C
ONTENTS
PART 1. SAFETY AND CAUTION ....................................................................................... 3~6
PART 2. PARTS OF YOUR DISHWASHER ............................................................................. 7
OPERATING INSTRUCTIONS
PART 3. FUNCTIONS OF CONTROL BUTTON .................................................................. 8~9
PART 4. USING YOUR DISHWASHER .............................................................................10~14
PART 5. CARE & MAINTENANCE ......................................................................................... 15
PART 6. OPERATING SEQUENCE ........................................................................................ 16
PART 7. PROGRAM ................................................................................................................ 17
PART 8. TROUBLESHOOTING ............................................................................................. 18
S
AFETY AND CAUTION
IMPORT ANT SAFETY INSTRUCTIONS
SAFETY AND CAUTION
Serious injury or death may occur when not observing the following rules.
WARNING -To reduce any risk of electric shock, fire or other personal or property injury when using your
dishwasher, please follow basic precautions, Including the following :
�This manual contains very important notes regarding the installation, use and maintenance of your dishwasher.
�The manufacturer can not be responsible for problems caused by ignoring these safety and caution instructions.
�Read all instructions (manuals) carefully before using the dishwasher.
�Use the dishwasher only for its intended function, or household use.
�Use only detergents or wetting agents recommended for use in a dishwasher and keep them out of the reach of
children.
�The appliance is not intended for use by young children or unqualified persons without supervision.
�When loading items to be washed :
1) locate sharp items so that they are not likely to damage the door seal ; and
2) load sharp knives with the handles up to reduce the risk of cut-type injuries.
�Do not wash plastic items unless they are marked dishwasher safe or the equivalent.
For plastic items not so marked, check the manufacturer’s recommendations.
�Do not touch the heating element during or immediately after use.
�Do not operate your dishwasher unless all enclosure panels are properly in place.
�Do not tamper with controls.
�Do not abuse, sit on, or stand on the door or dish rack of the dishwasher.
�To reduce the risk of injury, do not allow children to play in or on a dishwasher .
�Under certain conditions, hydrogen gas may be produced in a hot-water system that has not been used for two
weeks or more. HYDROGEN GAS IS EXPLOSIVE. If the hot-water system has not been used for such a period,
turn on all hot-water faucets and let the water flow for several minutes. This will release any accumulated hydrogen
gas. As the gas is flammable, do not smoke or use an open flame during this time.
�Remove the door to the washing compartment when disposing of an old dishwasher.
3
S
AFETY AND CAUTION
SAVE THESE INSTRUCTIONS
For a permanently connected dishwasher:
This appliance must be connected to a grounded metal, permanent wiring system or an equipmentgrounding conductor must be run with the circuit conductors and connected to the equipment-grounding
terminal or lead on the appliance.
SAFETY AND CAUTION
Do not put excessive downward force on the
open door as this could cause damage to the
unit. The dishwasher can be used on
completion of the installation.
Installation
WARNING
Tip Over Hazard
WARNING
WARNING
Electrical Shock Hazard
Not following these instructions can result
in death, fire or electrical shock.
Electrically ground dishwasher.
Connect ground wire to green ground
connector in terminal box.
Do not use an extension cord.
Serious injury or death may occur when not observing the following Instructions.
Your Dishwasher is only for
120V.
Before electrical power
connection, make sure cord is
grounded and connected to a
circuit breaker.
No grounding may cause
breakdowns or electric
shocks.
Do not grasp the electrical
cable or switch with wet
hands. Do not use a damaged
electrical cable, power plug or
socket.
It may cause electric
shock.
Do not install or store the
dishwasher where it will be
exposed to the weather.
It may cause an electric
shock, fire, malfunctions
and deformation.
Do not damage electrical
cable itself or place heavy
objects on the cable.
Electrical cable damage
may cause fire and electric
shock.
4
Disassembly or revision should
be conducted by experienced
service persons.
It may cause breakdowns,
fire and electric shock.
S
AFETY AND CAUTION
WARNING
Serious injury or death may occur when not observing the following rules.
Use and Maintenance
Do not allow children or pets
to play on the door or inside
the dishwasher.
Do not allow children to hang
on the door because the door
may fling open and they may
be injured.
Children may fall off.
Pets or children may be
wounded by rotating parts
or suffocated inside tub.
Do not store or use
combustible materials,
gasoline or other flammable
vapors and liquids in or
around dishwasher.
It may cause fire.
Do not splash water on to the
dishwasher.
It may cause fire and
electric shock.
SAFETY AND CAUTION
Don't leave racks out of
dishwasher.
Children may play inside
a dishwasher.
Keep the dishwasher away
from electric stove, candle
and any inflammable Objects.
It may cause melting of some
parts or fire.
CAUTION
Most appliances should be connected to a dedicated circuit; that is, a single outlet circuit which powers
only that appliance and has no additional outlets or branch circuits. Check the specification page of this
owner's manual to be certain (See page 7). Do not overload wall outlets. Overloaded wall outlets, loose or
damaged wall outlets, extension cords, frayed power cords, or damaged or cracked wire insulation are
dangerous. Any of these conditions could result in electric shock or fire. Periodically examine the cord of
your appliance, and if its appearance indicates damage or deterioration, unplug it, discontinue use of the
appliance, and have the cord replaced with an exact replacement part by an authorized service person.
Protect the power cord from physical or mechanical abuse, such as being twisted, kinked, pinched, closed
in a door, or walked upon. Pay particular attention to plugs, wall outlets, and the point where the cord exits
the appliance.
concerning the Power Cord
Child Safety
�Controls may be locked using Child Lock mode to prevent settings from being changed by children.
�Keep children away from detergents and rinse-aids.
�Do not allow children to operate the dishwasher.
�Young children should be supervised to ensure that they do not play with the appliance.
5
S
AFETY AND CAUTION
Installation
SAFETY AND CAUTION
Use and Maintenance
CAUTION
Injury , malfunction or poor performance may occur when not observing the following instruction.
Place dishwasher on even
and solid floor.
Uneven surface may cause
abnormal noise and
vibration.
When dishwasher is not in
use for a long time, close
water valve.
It may cause water leakage.
After installation, make sure
of hose connection.
Loosened connection may
cause water leakage
leading to property damage.
Dishwasher should be
unpacked and moved by 2 or
more persons due to it’s of
heavy weight.
Use only detergents or
wetting agents recommended
for use in a dishwasher and
keep them out of the reach of
children.
Improper detergents may
cause malfunctions, electric
shock or fire due to
excessive suds.
Do not press the button with
sharp edged devices like a
screwdriver or a pin.
It may cause electric
shock or malfunctions.
6
P
ARTS OF YOUR DISHWASHER
PARTS OF YOUR DISHWASHER
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
Specifications
�Power supply: 120V, 60 AC only
�Water Pressure: 20 - 120 psi (140 - 830 kPa)
XDX
�Size (W
�Inlet Water Temperature: 120(49)
�Weight: 115 Ibs. (52
The appearance and specifications are subject to change without
manufacturer’s notice
H): 23 7/8
(606mm
″″
)
X
X
″″
25
X 635mm X 860mm)
33 7/8
″″
7
F
Control panel may vary on some models.
UNCTIONS OF CONTROL PANEL
INDICATOR
• Child lock: Lamp will turn on
when Child Lock setting is on.
• Rinse Aid: Refill with Rinse aid
when Lamp turns on.
PROGRAM
• Press the program that
corresponds to your
desired wash cycle.
F UNCTIONS OF CONTROL P ANEL
Soak
Power Scrub
Normal
Delicate
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.
CANCEL
• To cancel a running
program, open the door,
then press and hold the
Normal and Delicate
buttons for 3 seconds.
Quick Wash
Rinse Only
8
This program is for that quick wash of lightly soiled recently
used dishes and cutlery.
This program is for very lightly soiled loads.
SPRAY
DELAY START
POWER
• Repeated pressing of the
Spray button will select
Strong, Medium or
Soft.
• 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.
• 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.
FUNCTIONS OF CONTROL PANEL
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
• When you select Extra
Rinse, an additional
rinse cycle is added.
。F (72℃)
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.
9
U
SING YOUR DISHWASHER
Before using the dishwasher, please
read Important Safety Instructions.
Water supply temperature should be 120 (49)
for better washing and reasonable cycle time.
For this reason, use hot water faucet only.
It is also important that the dishwasher is loaded
according to instructions for the effective
cleaning.
When loading your dishwasher, make sure that
insoluble items such as bones, toothpicks and
pieces of paper have been removed.
When loading the dishwasher, observe the
following general guidelines;
1. Deep based items should be placed at an
2. Remove solid, burnt-on scraps from dishes
3.Load only items which are dishwasher safe.
Loading the Lower Rack
USING YOUR DISHWASHER
This lower rack allows max. 14 in. (355mm)
plates, pans or any utensils which mean the size
of rack is bigger and is higher than industry
standard thanks to super big tub capacity.
angle to help water run off and dry properly.
prior to loading in the dishwasher.
NOTE Please avoid utensils that are non-heat
resistant, metal decorated, etc.
Basically the lower rack is not meant to load
small items like cups, wine glasses or small
plates. These items should be loaded on the
upper rack for proper distribution.
12 place setting, lower rack
Cutlery Basket
Racks are designed to hold even the most
delicate items securely in place as well as tall
items. In addition, our extra cutlery and knife rack
has separators to avoid scratching and tarnishing
of your delicate cutlery basket can be divided into
three separate baskets which can be used on
both the upper and lower levels. If you only have
a small load of cutlery, the baskets can be
removed leaving extra space for other plates.
NOTE Do not obstruct the rotation of the spray
arms. Make sure large items do not prevent
the detergent dispenser from opening.
The lower rack is best loaded with dinner plates.
soup bowls, dishes, pots, pans, lids and even a
grill tray. Plates should be positioned upright and
facing the center of the rack. Pots, pans and
large dishes must be turned upside down.
10 place setting, lower rack
10
NOTE
Be careful when loading and unloading sharpedged items. Load sharp knives with the handles
up in order to reduce the risk of cut-type injuries.
U
SING YOUR DISHWASHER
Removable Tines
If you need to wash large items, you can remove
these tines from the main rack.
Loading the Upper Rack
The upper rack is best loaded with more delicate
items, small plates, cutlery basket, cups, glasses
and dishwasher safe plastic items. Plates should
be positioned upwards with the plate bottom
facing the front of the rack. Cups, glasses and
bowls must be positioned upside down. Extra
cups or cooking utensils can be laid on the fold
down cup racks which may also provide support
for long stem glasses. Take care not to obstruct
the rotation of the spray arm under the upper
rack.
USING YOUR DISHWASHER
Adjustable angular tines
The plate supports in the lower and upper racks
can be folded down. Based on the size and
shape of the dishes, you can adjust the angle of
the tines to five different levels.
NOTE
Be careful when adjusting angular tines and apply
gentle force.
10 place setting, upper rack
12 place setting, upper rack
11
U
SING YOUR DISHWASHER
Height Adjustable Upper Rack for 14 in.
(355mm) loading (on some models)
LG dishwasher proudly introduces the ability to
load 14 in. (355mm) dishes. An upper rack that
moves up and down lets you put tall and oversized
items on it. LG dishwashers adjust enough to allow
14 in. (355mm) dinner plates on the lower and 12
in. (305mm) plates on the upper rack.
To raise the rack
Pull the rack upward holding the middle location
of the upper rack ( marked position) until the
rack locks.
To lower the rack
Pull the two levers on the left and right sides of the
rack until rack is level for smooth operation.
When you pull the levers upward, hold the middle
location of the upper rack.
( marked position).
Half Loading Option
In case you do not have enough dishes for a full load
you can simply load dishes in the upper rack or in
the lower rack only . You can then wash either rack
separately by selecting the half load option. This will
bring about a savings in hot water, electricity, and
time.
Removing the Upper Rack
The upper rack can be removed to make more room
in the lower rack.
To remove the upper rack
1. Pull the upper rack out until it stops.
2. Pull the upper rack upward gently from slides.
USING YOUR DISHWASHER
NOTE
After adjusting, check that the spray arm is free to rotate
without being stopped by dishes loaded on the upper
rack. Do not adjust racks when dishes are loaded.
Caution
Non Dishwasher Safe Items
The combination of high water temperature
and dishwasher detergents may damage
particular items, therefore we do not recommend
using the dishwasher to wash the following items:
�Hand painted silver or gold leaf crockery
�Wood or bone handled utensils
�Iron or non rustproof utensils
�Plastic items which are not dishwasher safe.
NOTE
Always remove dishes from the upper rack before
removing the rack.
12
U
SING YOUR DISHWASHER
Adding detergent to dispenser
�Detergent must be put into the detergent chamber
before starting every program except the PreWash.
�Please follow the manufacturer's instructions
printed in the manual when determining the
correct amount of detergent.
�If your dishes are only moderately dirty, you may
be able to use less detergent than recommended.
�The detergent chamber holds 1.4 oz (40g) max.
�The amount of detergent depends on the program
and dish loads. Refer to the guide table.
PROGRAM AMOUNT OF DETERGENT
Soak 0.9oz (25g)
Power Scrub 0.9oz (25g)
Normal 0.7oz (20g)
Delicate 0.7oz (20g)
Filling the dispenser
1. Push latch to open.
2. Add detergent to the main wash compartment.
(See the table for the amount of detergent.)
NOTE
Do not add detergent for a rinse cycle.
For main wash
USING YOUR DISHWASHER
Quick Wash 0.7oz (20g)
Rinse Only No detergent
Caution
Detergent Information
Use only the detergent intended for household
dishwashers or the dishwasher may fill with suds
during operation. Suds may reduce washing
performance and could cause the unit to leak.
(Hand- Wash detergent is not allowed for this
dishwasher.)
3. If needed, add detergent to pre wash
compartment.
For pre- wash
4.Close the cover. (You can hear cover latch click.)
NOTE
Too much detergent can leave a film on dishes.
13
U
SING YOUR DISHWASHER
Adding Rinse Aid to dispenser
The purpose of rinse aids is to prevent possible
spots on dishes formed from droplets during drying
operation. By removing them, drying performance
will be increased.
NOTE
Only liquid rinse aids can be used for this dishwasher .
�Filling Rinse Aid
1. Rotate the round cap counterclockwise and
2. Add a liquid rinse aid to the maximum level.
USING YOUR DISHWASHER
remove it.
(Max. 4.8 oz (145mL))
�Rinse Aid Amount Setting
The factory setting is at level 3 which is where you
can expect the best performance under a normal
condition. After a cycle is done, if you notice some
spots, streaks or water marks on the dishes, adjust
to a higher setting. If you notice foam present on the
bottom of the glasses or tub bottom, change to a
lower setting.
1. Remove the cap.
2. Rotate adjuster to the desired setting.
��
Refilling Rinse Aid
4.8 oz (145mL) is the capacity of the rinse aid
dispenser. The refilling period totally depends on
your washing habits such as the number of washes
per month and which rinse aid setting you adjust to
your washing conditions. The indicator light will
inform you when there is insufficient rinse aid in the
dispenser. The indicator light will stay on when you
close the door to start a cycle.
3.Replace and lock the cap.
4. Rinse aid will be automatically dispensed during
the final rinse cycle.
14
When the lamp is on, it indicates
the rinse-aid reservoir is almost empty.
��
Black indicates sufficient Rinse Aid
��
Clear indicates Rinse Aid required
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