LG LDF9810ST User Manual 2

LG TRAINING MANUAL

LG TRAINING MANUAL

Dishwasher LDF9810ST

Spring 2008

Published January 2008 by LG Electronics USA Training Center

Copyright © 2008 LG Electronics of Alabama, Inc.

Ph o n e Co n t a C t s :

Contact Number Hours of Operation

Customer Service [phone] 24 hours a day / 7 days a week

Technical Support [phone] 7am-7pm Mon-Fri / Sat 8-2 CST

Parts Sales [phone] 7am-7pm Mon-Sat CST

Training Center [phone] 8am-5pm Mon-Fri CST

e b Co n t a C t s :

W

Web Site Address Description

LG USA www.lgusa.com Product information

Customer Service us.lgservice.com User manuals, FAQs

GCSC aic.lgservice.com Service manuals, parts, bulletins

Customer Service Academy www.lgcsacademy.com Web training, discussion forum

Live Training lge.webex.com Live training

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Contents 1
Safety Notices, Warnings, and Disclaimers 3
Safety Tips 4
Warranty 5
Specifications 6
Features 6
Installation 8
Electrical Supply Preparation 9

Leveling Kit 9
Drain Connection 10
Water Connection 10
Electrical Connection 10
Final Installation 11
Control Panel 12
Options 12
Indicators 12
Programs 13
Dual Intensity Spray Wash 13
Adding Detergent 14
Adding Rinse Aid 15
Program Chart 16
Test Mode 17
Troubleshooting Error Codes 18
Steam Generator Error Codes 19
Troubleshooting Charts 20
No Power 20
Wash Pump / Motor Does Not Run 21
Washing Results Are Unsatisfactory 22
Drying Results Are Unsatisfactory 22
No Power-Off At End Of Cycle 23
Disassembly / Repair 24
Lower Cover and Insulation 24
Cabinet and Tub Insulation 24
Front Cover 24
Control Panel Assembly 24
Fan Assembly 26

Rev 1.0 080205

Water Supply Preparation 9

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Disassembly / Repair (continued)
Detergent Dispenser 26
Door Springs (Right and Left) 26
Door Liner 26
Lower Frame 27
Drain Hose Holder 27
Base Cover 27
Line Noise Filter 28

Wiring Diagram (Location) 28
Cabinet Base 28
Float Assembly 28
Steam Generator 29
Inlet Valve 29
Air Breaker Assembly 29
Sump Assembly 30
Heater and Drain Motor 30
Vario Motor 30
Soil Sensor 31
Reassembly 31
Cutlery Rail Rack 32
Upper Rail Rack 32
Wiring Diagram 33
Exploded Views 34
Model / Serial Number Decoding Chart 40
Parts List 41
Supplementary Material 45
Ohm’s Law and Watt’s Law 45
Conversion Information 46
Service Bulletin 47
Drain Installation Method and Information 50
Wiring Diagram (Oversized)

Float Switch Assembly 28

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IMPORTANT SAFETY NOTICE

The information in this training manual is intended for use by persons possessing an adequate b ackground
in electrical equipment, electronic devices, and mechanical systems. In any attempt to repair a major
appliance, personal injury and property damage can result. T he manufacturer or seller maintains no liability
for the interpretation of this information, nor can it assume any liability in conjunction with its use. When
servicing this product, under no circumstances should the original design be modified or altered without
permission from LG Electronics. Unauthorized modifications will not only void the warranty, but may lead to
property damage or user injury. If wires, screws, clips, straps, nuts, or washers used to complete a ground
path are removed for service, they must be returned to their original positions and properly fastened.

CAUTION

To avoid personal injury, disconnect the power before servicing this product. If electrical power is required
for diagnosis or test purposes, disconnect the power immediately after performing the necessary checks.
Also be aware that many household appliances present a weight hazard. At least two people should be
involved in the installation or servicing of such devices. Failure to consider the weight of an appliance could
result in physical injury.

ESD NOTICE

Some of the electronics in appliances are electrostatic discharge (ESD) sensitive. ESD can weaken or
damage the electronics in these appliances in a manner that renders them inoperative or reduces the time
until their next failure. Connect an ESD wrist strap to a ground connection point or unpainted metal in the
appliance. Alternatively, you can touch your finger repeatedly to a ground connection point or unpainted
metal in the appliance. Before removing a replacement part from its package, touch the anti-static bag to a
ground connection point or unpainted metal in the appliance. Handle the electronic control assembly by its
edges only. When repackaging a failed electronic control assembly in an anti-static ba g, observe these
same precautions.

REGULATORY INFORMATION

This equipment has been tested and found to comply with the limits for a Class B digital device, pursu ant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmfu l
interference when the equipment is operated in a residential installation. T his equipment generates, uses,
and can radiate radio frequency energy, and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. However, there is no guarantee that
interference will not occur in a particular installation. If this equipment does cause harmful interference to
radio or television reception, which can be determined by turning the equipment off and on, the user is
encouraged to try to correct the interference by one or more of the following measures: Reorient or relocate
the receiving antenna; Increase the separation between the equipment and the receiver; Connect the
equipment to an outlet on a different circuit than that to which the receiver is connected; or consult the
dealer or an experienced radio/TV technician for help.

DISCLAIMER

The information in this training manual was accurate at the time of publication. Every effort has been made
to ensure accuracy. Updates, changes, etc. are available via GCSC and LGCSacademy. The information in
this manual is intended for persons with adequate backgrounds in electronics, mechanical, and electronic
servicing. The manufacturer and seller are not to be held responsible for any liability incurred from its use.

COMPLIANCE

The responsible party for this device’s compliance is LG Electronics Alabama, Inc.; 201 James Record Road,
Huntsville, AL, 35813.

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SAFETY TIPS

• Disconnect the power before servicing the dishwasher.

• Reconnect all grounding devices after repairs are complete. This includes

all grounding wires that are attached by screw and ring connector as well
as the power input, whether cordset and outlet or hardwired.

• Install the dishwasher on a properly fused and grounded dedicated circuit.

• Steam is HOT! Use care when working with live steam.

• Do not use the open door as a step or a resting place for dishes, pots and

pans, and other heavy items.

• Use ONLY detergent and drying agents developed for automatic
dishwashers. DO NOT use detergents made for hand-washing dishes.

• The dishwasher must be set on firm and even flooring that is at the same
level as the kitchen flooring for the ease of installation and servicing.

• Do not leave the racks out of the dishwasher. Children may be tempted
top play inside the dishwasher.

• If the dishwasher is not used for long periods (vacation, seasonal home, et
al.) turn off the water valve.

• Touch the buttons with your fingers only. Do not poke them with forks,
screwdrivers, or similar items.

• Do not use the dishwasher to wash items other than dishes and items
used in food preparation. Do not put other items, like aquaria, toilet seats,
bedpans, and other items in it. It is a dishwasher and not an autoclave.

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WARRANTY

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SPECIFICATIONS

Rated Input 120 VAC, 60Ø
Installation Built-in
Capacity 14 place settings
Dimensions (inches) 23⅞ X 25 X 33⅞
Weight (pounds) 128
Door Color Black, White, Stainless
Tub Stainless Steel
Control Electronic
Programs 6 Cycles
Rated Power (Watts) 1,350
Heater Power (Watts) 1,200
Upper Rack Adjustable
Lower Rack 50% Fold Down
Cutlery Rack Yes
Water Consumption 2.6 ~ 6.0 Gals. (10 ~ 26 Liters)
Power Consumption (kWh/year) 285 ~ 310
Operating Time (Minutes) 101 ~ 135 (normal cycle)
Fan Dry System Yes
Steam Generator Yes
Delay Start Function Yes
Auto-Off Power Switch Yes
Process Monitor Yes
Wash Level 5
Racks Nylon Coating
Operating Pressure (Bar) 20 ~ 120 (140 ~ 830 kPa)

ITEM SPECIFICATION

FEATURES

Ultra Large Capacity

Removable Cutlery Rack
Slim Direct-Drive Motor
Hybrid Drying System
Vario Spray System
Self-Cleaning Filter
Dual Intensity™ Wash Cycle
Steam Washing and Steam Delicate™
Light Tough Buttons and Blue LCD
Auto-Off

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FEATURES, continued

1. Control Panel

2. Door Handle

3. Front Cover

4. Lower Cover

5. Leveling Foot

6. Side Cabinet

7. Base

8. Top Spray Arm

9. Upper Spray Arm

10. Removable Tines

11. Steam Nozzle

12. Lower Spray Arm

13. Dispenser (Detergent / Rinse Aid)

14. Vapor Vent Cover

15. Tub Lamps (IllumiTub™)

16. Cutlery Rack

17. Upper Rack

18. Cutlery Basket

19. Lower Rack

20. Blue LCD Display

21. Power Button

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INSTALLATION

Installation is covered briefly for the servicer who may need to uninstall and
reinstall the dishwasher for repairs. For new installations, please refer to the
installation guide that was supplied with the dishwasher.

• We recommend a location as close to the sink as possible (but not directly
under it) for easy connection to water and drain lines.

• The installation must be within 10’ (3 m) of the sink for proper drainage.

• If the dishwasher is installed in a corner (next to an adjacent wall), there

must be 2” (50 mm) clearance.

• The floor under the dishwasher should be at the same level as the rest of
the room so the dishwasher can slide in and out easily for service.

Drill a 1½” hole on either side to allow
for the drain hose, water supply hose,
and electrical cable. The opening must
be in an area within 4” (100 mm) of the
back wall and 4” (100 mm) of the floor.

If there is a floor in the cabinet under
the sink, it will be necessary to cut
through it to connect the water, drain,
and electrical cable under the sink.

The dishwasher must be supplied with
120 V
on the rating plate and connected to a
properly fused and grounded dedicated
20-amp circuit.

The wire or water supply can be fed
from either side, and both from the
same side, depending upon source
location.

They must be run in the channels
under the dishwasher, as shown in the
drawing.

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60 Hz 1Ø current as indicated

AC

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ELECTRICAL SUPPLY PREPATATION

The dishwasher can be hardwired if necessary and if permitted by local code. We
recommend the use of a dishwasher installation kit, available at most hardware
and home supply stored. This kit includes a cordset, a flexible water supply line,
and the elbow connector necessary to connect it. Using a cordset requires an
electric outlet under the sink accessible when the dishwasher is installed. The
cordset makes it easier to disconnect the dishwasher from power while working
on it and makes removal and replacement easier. As stated earlier, installation
requires a properly fused and grounded dedicated circuit.

WATER SUPPLY PREPARATION

The dishwasher may be connected to either hot or cold water. If the hot water
can not maintained below 149° F, the dishwasher must be connected to the cold
water supply. Lay out the water supply line as indicated on page 14 of this
training manual. Use sealing tape or joint compound to avoid leaks.

INSTALLATION

Adjust the legs to the required height
for the dishwasher to slide under the
countertop and be level. Check the
level using a spirit level.

Attach the leveling feet kit to allow for
fine tuning when the dishwasher is
pushed into place.

To complete the installation:
Remove the lower cover.
Make sure the legs are adjusted and

the dishwasher is level.
Lay out the electrical cable, water

supply tube, and drain hose as
shown.

Slide the dishwasher carefully back
into place.

Make the appropriate connections, as
directed below.

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DRAIN CONNECTION

The drain hose must be connected in a manner that meets the local plumbing
code. If the end of the drain hose does not fit the available connector, an adapter
may be obtained from a local hardware or plumbing supplier.

The rubber end can be cut off for the
correct size attachment.

This drawing shows the drain line
installed with a rise in the drain pipe
but no air gap. It can also be with an
air gap installed. Be sure to observe
the clearances listed.

Most garbage disposers have a
dishwasher drain fitting built in to
them. If your installation does not
include a disposer, you can use a

See supplementary drain information on
page 50 of this training manual.

special tail piece with a drain
attachment available at most
hardware and home supply stores.

WATER CONNECTION

Turn off the water supply and connect
the elbow to the inlet valve.

Connect the flexible supply tube to the
elbow.

Use sealing tape to make all
connections.

Make sure the supply line is not kinked.

ELECTRICAL CONNECTION

Use wire
connectors and
replace the
cover on the
junction box.
(12/2 w/ ground,
20-amps)

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FINAL INSTALLATION

1. Turn on the water at the valve under the sink.

2. Turn on the power at the fuse or breaker (or plug in the cordset at the
outlet under the sink.

3. Run the dishwasher through one QUICK cycle to check the operation and
to check for water leaks.

4. Replace the lower cover.

When the door is closed, the top edge with the controls should be under the
countertop.

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CONTROL PANEL

SOAK Heavily soiled loads, with cooked-on foods
POWER SCRUB Normal soil level, everyday loads
NORMAL Normal soil level, everyday loads
STEAM DELICATE Washing delicate items, crystal, stemware
QUICK Light soil level, recently used dishes and cutlery
RINSE ONLY Rinses only, no washing

OPTIONS

STEAM Adds steam to SOAK, POWER SCRUB, and Normal cycles
RINSE Pressing cycles through Sanitary, Extra Rinse, or both
SPRAY Pressing cycles through Strong, Medium, or Soft spray
HALF LOAD Pressing chooses either upper or lower rack instead of both
DELAY START Each press delays the start by one hour up to 24 hours
CHILD LOCK Press and hold to engage/disengage
CANCEL Press and hold ST EAM DELICATE and NORMAL

INDICATORS

n
o

p
q

r

s

Steam option indicator – blinks if selected
Rinse indicator – blinks if selected

Spray indicator – blinks if selected
Half load indicator

Child Lock – illuminated when engaged
Rinse Aid – illuminated when refill is required

Time remaining before cycle ends

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PROGRAMS

DUAL INTENSITY SPRAY WASH

The spray intensity for the upper lower racks is programmable by the customer.
By selecting SOFT SPRAY for the upper rack and STRONG SPRAY for the
lower rack, you can wash delicate items like stemware on top while washing pots
and pans on the bottom.

1. Press and hold SPRAY to illuminate the indicator.

2. Press SPRAY to set the intensity for the upper rack.
(Strong/Medium/Soft/Off)

3. Press HALF LOAD to confirm the selection for the upper rack.

4. Press SPRAY to set the intensity for the lower rack.

5. Press HALF LOAD to confirm the selection for the lower rack.

6. Select other options.

7. Close the door.

8. The dishwasher will start.

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ADDING DETERGENT

Detergent must be added to the dispenser before the start of every cycle except
RINSE ONLY. The detergent chamber holds 1.4 oz. (40 g) when full. If the
dishes are only moderately dirty, it might be possible to use less detergent.

Press the latch button to open the
detergent chamber.

Add detergent in the proper amount.
(See chart, below.)

Close the cover and be sure the latch
clicks.

If pre-wash cycle is selected (in SOAK
or POWER SCRUB only), add the
appropriate amount of pre-wash
detergent in the recess on the door
cover. When you close the dishwasher
door, the detergent will fall into the tub.

NOTE: Too much detergent can leave
a film on the dishes.

CYCLE

Amt. Detergent

Soak Full (0.35 oz.) ¾ full (1.05 oz.)

Power Scrub Full (0.35 oz.) ¾ full (1.05 oz.)

Normal None ½ full (0.7 oz.)

Steam Delicate None ½ full (0.7 oz.)

Quick None ¼ full (0.3 oz.)

Rinse Only None ½ full (0.7 oz.)

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ADDING RINSE AID

Turn the round cap counterclockwise
and remove it.

Fill the reservoir. It holds 4.8 oz.
(145 ml)

Replace the cap and lock it.

Adjust the rinse-aid setting
as necessary.

The factory setting for rinse aid dispensing is 3. Too little rinse aid contributes to
spotting, streaking, and poor drying performance. Too much rinse aid causes
foaming, which leads to poor washing performance.

How often you refill the dispenser depends upon your washing habits, including
the rinse aid setting, the number of loads per month you wash, and other factors.
The indicator light will illuminate when the level is low at the start of a load.

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PROGRAM CHART

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TEST MODE

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TROUBLESHOOTING ERROR CODES

ERROR CODE POSSIBLE CAUSE SOLUTION

INLET ERROR

Water not to
normal level after
10 minutes’ fill
time

DRAIN ERROR

Not completely
drained after 5
minutes’ drain
time

LEAKAGE

ERROR

Excessive motor
RPM due to
water leakage

FILL ERROR

Excess water
supplied and
drain pump runs
automatically

• Water supply valve closed

• Water supply shut off

• Inlet hose kinked

• Water pressure low (below

10 psi)

• Inlet valve defective

• Inlet valve filter clogged

• Hall sensor defective

• Input impeller is bound

• Drain hose kinked or

blocked

• Wiring connection defective

• Drain outlet of sump

blocked

• Drain pump, drain motor, or
drain circuit is defective

• Water leakage in hose
connections

• Water leak from damage

• Sump seal leakage

• Drain hose not high enough

• Washing pump impeller is

damaged or worn

• Inlet valve defective

• Main board defective

• Check valve

• Check resistance of valve

(950~1,300Ω)

• Clean the inlet filter

• Check frequency in test

mode (page 13)

• Replace air breaker

• Remove the kink or

blockage

• Check the wiring
connection

• Check the sump for
blockage

• Measure the resistance of
drain motor (20 ~ 40 Ω)
Replace motor or repair
circuit

• Replace hose connections

• Repair damage

• Reseat or replace seal

• Adjust hose to meet

installation requirements

• Replace impeller of
washing pump

• Replace inlet valve

• Replace main board

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