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

■■

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

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.

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

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.

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

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.

Disassembly or revision should be conducted by experienced service persons.

It may cause breakdowns, fire and electric shock.

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.

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.

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 635mm X 860mm)

33 7/8

″″



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

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.

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

 

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.

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

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.

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.

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.

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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