LG LDT7797 Series User manual

DISHWASHER
SERVICE MANUAL
NOTE
For Authorized Service Technicians
CONFIDENTIAL
MODEL : LUDP8997SN / LDT7797** / LDP6797** / LDP5676** /
LDT5665** / LDF5545** / LSDF9897** / LDT7808** /
LSDT9908** / LDT5678** / LDF5678** / LDP7708** /
SKSDW24*** / LDB4548** / LDT6809** / LDP6809** /
LDPS6844** / LDP7808** / LDP6810** / LUDP8908**
LDFN343** / LDTS555** / LSDTS988** / LDFN454**
Any reproduction or duplication (including by way of email, facsimile or other electronic means),
publication, modification, copying or transmission of this Service Manual is STRICTLY PROHIBITED unless you
have obtained the prior written consent of the LG Electronics entity from which you received this Service
Manual. The material covered by prohibition includes, without limitation, any text, graphics or logos in this
Service Manual.
Copyright ⓒ 2017 - 21 LG Electronics Inc. All rights
reserved. Only for training and service purposes.


For Authorized Service Technicians
- 3 -
CONTENTS

For Authorized Service Technicians
- 4 -
DISCONNECT POWER SUPPLY LINE 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 cannot be responsible
for the interpretation of this information, nor can it
assume any liability in connection with its use.
CAUTION

For Authorized Service TechniciansFor Authorized Service Technicians
- 5 -
2. SPECIFICATIONS
ITEM SPECIFICATION

For Authorized Service Technicians
- 6 -
3. FEATURES AND OPERATION
PRODUCT FEATURES
QuadWash™ System
Multi-motion lower spray arm shoots water in various directions and at optimized intensities to reach every area of the tub.
This system provides more powerful and complete cleaning coverage.
Inverter Direct Drive Motor
LG's experience in motor technology results in extraordinary functionality, with advanced features like the Dual Zone option,
The simple design and high build quality of the motor make it so reliable that it's covered for 10 years under the warranty.
EasyRack Plus
various shapes and sizes.
Hybrid Drying System
and gentle care for dishes.
LG ThinQ™
Download the new LG smart phone app to set options, self-diagnose and troubleshoot problems with the appliance, and
other useful features. Some of these functions use Wi-Fi or NFC (Near Field Communication) technology and require an
NFC-equipped smart phone.

For Authorized Service TechniciansFor Authorized Service Technicians
- 7 -
12
4
3
1
Power
•Press the Power button to turn power on and
off.
•After the cycle is complete, the power
automatically turns off for purposes of safety and
economy.
•If there is a power surge, power outage, or
disruption of any kind, power is automatically
turned off for safety.
•When power is connected again, it will turn on
automatically and resume the cycle.
2
Display
•: Rinse Aid Icon
- This icon illuminates when the rinse aid level is
low. The LED automatically shuts off when the
- Refer to the Rinse Aid Dispenser Adjustment
section.
•: Digital Display
- The digital display on the control panel shows
the ESTIMATED cycle time. When the cycle
and options are selected, the display shows
the total estimated time to complete those
selections. During operation, the display shows
the remaining estimated operating time.
NOTE
•The estimated time shown on the display does
not include delay times for heating water, etc.
•If Delay Start is selected, the display shows the
delay time in hours.
•Cycle time may vary depending on the soil level
of your load.
•, : Control Lock
- The Control Lock feature helps prevent
settings from being changed during a cycle.
Selecting this feature locks all of the buttons,
except for the Power button, on the control
panel. This feature does not lock the door.
- While a cycle is running, press and hold Half
Load and Energy Saver simultaneously for
three seconds to activate or deactivate Control
Lock.
- To start a new cycle, deactivate Control Lock.
•: Wi-Fi
- When the appliance is connected to the
internet through a home Wi-Fi network, this
icon illuminates.
- Press and hold Delay Start for approximately
three seconds to connect to the network.
3
Cancel
•The drain pump activates and the cycle cancels.
power turns off.
•Press and hold Start for three seconds to
activate.
4
Start
•To operate the machine, either press Start and
close the door within four seconds or close the
door and press Start.
•If Start button is not pressed to start the cycle,
an alert will sound.
Chime On/Off
•To activate or deactivate the button sounds,
press and hold Dual Zone and Energy Saver
simultaneously for three seconds. The error alert
sound cannot be turned off.
Control Panel

For Authorized Service Technicians
- 8 -
Control Panel
12
4
3
1
Power
•Press the Powerbutton to turn power on and off.
•After the cycle is complete, the power
automatically turns off for purposes of safety and
economy.
•If there is a power surge, power outage, or
disruption of any kind, power is automatically
turned off for safety.
•When power is connected again, it will turn on
automatically and resume the cycle.
2
Display
•: Rinse Aid Icon
- This icon illuminates when the rinse aid level is
low. The LED automatically shuts off when the
rinse aid is refilled or the level is set to 0.
- Refer to the Rinse Aid Dispenser Adjustment
section.
•: Digital Display
- The digital display on the control panel shows
the ESTIMATED cycle time. When the cycle
and options are selected, the display shows
the total estimated time to complete those
selections. During operation, the display shows
the remaining estimated operating time.
NOTE
•The estimated time shown on the display does
not include delay times for heating water, etc.
•If Delay Start is selected, the display shows the
delay time in hours.
•Cycle time may vary depending on the soil level
of your load.
•,: Control Lock
- The Control Lock feature helps prevent
settings from being changed during a cycle.
Selecting this feature locks all of the buttons,
except for the Power button, on the control
panel. This feature does not lock the door.
- While a cycle is running, press and hold Half
Load and Energy Saversimultaneously for three
seconds to activate or deactivate Control Lock.
- To start a new cycle, deactivate Control Lock.
•
a
: Machine Clean & Sanitized Icon
- Machine Clean
This cycle is for cleaning the inside of the
dishwasher. Use the cycle without dishes in
the machine. It eliminates residual soils, odor,
white spots, and other dirt. Add citric acid
or another cleaning agent for more effective
results.
Press and hold Heavy for three seconds to
activate.
NOTE
•This icon flashes during cycle setup every 30
cycles. To activate or deactivate the icon, press
the Delicate button for three seconds.
- Sanitized
If the High Temp option is added to a cycle,
this icon indicator stays lit at the end of the
cycle if the dishes were properly sanitized.
•: Wi-Fi
- When the appliance is connected to the
internet through a home Wi-Fi network, this
icon illuminates.
- Press and hold Delay Start for approximately
three seconds to connect to the network.
3
Cancel
•The drain pump activates and the cycle cancels.
Once the dishwasher finishes draining, the
power turns off.
•Press and hold Start for three seconds to
activate.
4
Start
•To operate the machine, either press Start and
close the door within four seconds or close the
door and press Start.
•An alert will sound when the door is not closed
within 4 seconds after you press Start button.
Chime On/Off
•To activate or deactivate the button sounds,
press and hold Dual Zone and Energy Saver
simultaneously for three seconds. The error alert
sound cannot be turned off.

For Authorized Service TechniciansFor Authorized Service Technicians
- 9 -
Control Panel
12
4
3
1
Power
•Press the Power button to turn power on and
off.
•After the cycle is complete, the power
automatically turns off for purposes of safety and
economy.
•If there is a power surge, power outage, or
disruption of any kind, power is automatically
turned off for safety.
•When power is connected again, it will turn on
automatically and resume the cycle.
2
Display
•: Rinse Aid Icon
- This icon illuminates when the rinse aid level is
low. The LED automatically shuts off when the
- Refer to the Rinse Aid Dispenser Adjustment
section.
•: Digital Display
- The digital display on the control panel shows
the ESTIMATED cycle time. When the cycle
and options are selected, the display shows
the total estimated time to complete those
selections. During operation, the display shows
the remaining estimated operating time.
NOTE
•The estimated time shown on the display does
not include delay times for heating water, etc.
•If Delay Start is selected, the display shows the
delay time in hours.
•Cycle time may vary depending on the soil level
of your load.
•, : Control Lock
- The Control Lock feature helps prevent
settings from being changed during a cycle.
Selecting this feature locks all of the buttons,
except for the Power button, on the control
panel. This feature does not lock the door.
- While a cycle is running, press and hold
Dual Zone for three seconds to activate or
deactivate Control Lock.
- To start a new cycle, deactivate Control Lock.
3
Cancel
•The drain pump activates and the cycle cancels.
power turns off.
•Press and hold Start for three seconds to
activate.
4
Start
•To operate the machine, either press Start and
close the door within four seconds or close the
door and press Start.
•If Start button is not pressed to start the cycle,
an alert will sound.
Chime On/Off
•To activate or deactivate the button sounds,
press the Half Load button for three seconds.
The error alert sound cannot be turned off.

For Authorized Service Technicians
- 10 -
Control Panel
12
4
3
1
Power
•Press the Power button to turn power on and
off.
•After the cycle is complete, the power
automatically turns off for purposes of safety and
economy.
•If there is a power surge, power outage, or
disruption of any kind, power is automatically
turned off for safety.
•When power is connected again, it will turn on
automatically and resume the cycle.
2
Display
•: Rinse Aid Icon
- This icon illuminates when the rinse aid level is
low. The LED automatically shuts off when the
- Refer to the Rinse Aid Dispenser Adjustment
section.
•: Digital Display
- The digital display on the control panel shows
the ESTIMATED cycle time. When the cycle
and options are selected, the display shows
the total estimated time to complete those
selections. During operation, the display shows
the remaining estimated operating time.
NOTE
•The estimated time shown on the display does
not include delay times for heating water, etc.
•If Delay Start is selected, the display shows the
delay time in hours.
•Cycle time may vary depending on the soil level
of your load.
•, : Control Lock
- The Control Lock feature helps prevent
settings from being changed during a cycle.
Selecting this feature locks all of the buttons,
except for the Power button, on the control
panel. This feature does not lock the door.
- While a cycle is running, press and hold Half
Load and Energy Saver simultaneously for
three seconds to activate or deactivate Control
Lock.
- To start a new cycle, deactivate Control Lock.
3
Cancel
•The drain pump activates and the cycle cancels.
power turns off.
•Press and hold Start for three seconds to
activate.
4
Start
•To operate the machine, either press Start and
close the door within four seconds or close the
door and press Start.
•If Start button is not pressed to start the cycle,
an alert will sound.
Chime On/Off
•To activate or deactivate the button sounds,
press and hold Dual Zone and Energy Saver
simultaneously for three seconds. The error alert
sound cannot be turned off.

For Authorized Service TechniciansFor Authorized Service Technicians
- 11 -
Control Panel
12
4
3
•, : Control Lock
- The Control Lock feature helps prevent
settings from being changed during a cycle.
Selecting this feature locks all of the buttons,
except for the Power button, on the control
panel. This feature does not lock the door.
- While a cycle is running, press and hold Half
Load and Energy Saver simultaneously for three
seconds to activate or deactivate Control Lock.
- To start a new cycle, deactivate Control Lock.
1
Power
•Press the Power button to turn power on and
off.
•After the cycle is complete, the power
automatically turns off for purposes of safety and
economy.
•If there is a power surge, power outage, or
disruption of any kind, power is automatically
turned off for safety.
•When power is connected again, it will turn on
automatically and resume the cycle.
2
Display
•: Rinse Aid Icon
- This icon illuminates when the rinse aid level is
low. The LED automatically shuts off when the
rinse aid is refilled or the level is set to 0.
- Refer to the Rinse Aid Dispenser Adjustment
section.
•: Digital Display
- The digital display on the control panel shows
the ESTIMATED cycle time. When the cycle
and options are selected, the display shows
the total estimated time to complete those
selections. During operation, the display shows
the remaining estimated operating time.
NOTE
•The estimated time shown on the display does
not include delay times for heating water, etc.
•If Delay Start is selected, the display shows the
delay time in hours.
•Cycle time may vary depending on the soil level
of your load.
•
a
: Machine Clean & Sanitized Icon
- Machine Clean
This cycle is for cleaning the inside of the
dishwasher. Use the cycle without dishes in the
machine. It eliminates residual soils, odor, white
spots, and other dirt. Add citric acid or another
cleaning agent for more effective results.
Press and hold Heavy for three seconds to
activate.
NOTE
•This icon flashes during cycle setup every 30
cycles. To activate or deactivate the icon, press
the Delicate button for three seconds.
- Sanitized
If the High Temp option is added to a cycle,
this icon indicator stays lit at the end of the
cycle if the dishes were properly sanitized.
•The drain pump activates and the cycle cancels.
Once the dishwasher finishes draining, the
power turns off.
•Press and hold Start for three seconds to activate.
Cancel
3
•To operate the machine, either press Start and
close the door within four seconds or close the
door and press Start.
•An alert will sound when the door is not closed
within 4 seconds after you press Start button.
Start
4
•To activate or deactivate the button sounds,
press and hold Dual Zone and Energy Saver
simultaneously for three seconds. The error alert
sound cannot be turned off.
Chime On/Off

For Authorized Service Technicians
- 12 -
Cycles
Select your desired cycle.
Before 106XX
Auto
This cycle senses the soil amount and soil toughness
and is optimized to achieve the best cleaning.
•For steam models, this cycle has the added power
of steam.
Heavy
This cycle is for heavily soiled dishes and dishes with
hardened on soil. The Heavy cycle defaults to the
strongest spray intensity and uses it to wash heavily
soiled dishes.
•For steam models, this cycle has the added power
of steam.
Delicate
china and stemware.
•For steam models, this cycle has the added power
of steam.
Normal
This cycle is for moderately soiled, everyday loads.
Select the Night Dry option if leaving dishes
overnight. Press and hold Extra Dry for three
seconds to activate Night Dry.
Turbo
This cycle will clean heavily soiled dishes in an hour
using slightly more energy and water. Select the
Extra Dry options for better drying.
Download Cycle
Use a dedicated cycle downloadable via Wi-Fi or
NFC.
Machine Clean
This cycle is for cleaning the inside of the dishwasher.
Use the cycle without dishes in the machine. It
eliminates residual soils, odor, white spots, and other
dirt. Add citric acid or another cleaning agent for more
effective results.
•Press and hold Heavy for three seconds to activate.
NOTE
•The Machine Clean
cycles. To activate or deactivate the icon, press the
Delicate button for three seconds.
Rinse
This cycle is a quick rinse for dishes that will not be
washed immediately. The cycle rinses dishes that
have excess soil to soften dried on residue. Rinsing
the dishes helps prevent odors in the dishwasher. No
detergent should be used.
•Press and hold Normal for three seconds to
activate.
Express
This cycle will quickly clean lightly soiled dishes.
(Time : 33 minutes) Select the Extra Dry option or
another cycle for better drying.
•Press and hold Turbo for three seconds to activate.
NOTE
•Rinse, Turbo, and Express cycles do not have
drying or have a shortened dry time. For better
drying performance, open the door after these
cycles or select a different cycle.
Options
Select the desired cycle button and then select the
options for that cycle.
Dual Zone
This option automatically sets the spray intensity to
soft for the upper spray arm and strong for the lower
spray arm. Place heavily soiled dishes like plates and
bowls in the lower rack and lightly soiled dishes like
cups and small plates in the upper rack to get the
best results.
Half Load
This option washes intensively by selecting the upper
or lower racks. For small loads, use just the upper
or lower rack to save energy and time. By pressing
the Half Load button, the settings , and the
cancellation of the Half Load option are available.
Energy Saver
This option saves energy by reducing the wash
and rinse temperatures. Wash time is increased to
maintain wash performance. Do not use this cycle
with heavily soiled dishes.
High Temp
Raises the main wash temperature to improve
cleaning.
Extra Dry
Select the Extra Dry option for better drying
performance. This option adds extra drying time to
the cycle and raises the heated rinse temperature.
•When the rinse aid is empty, the Extra Dry option is
selected automatically.
Night Dry
Dishes are often left in the dishwasher overnight after
the cycle ends. This can result in the steam inside
the tub condensing on dishes, leaving them wet. The
Night Dry option runs the ventilation fan periodically
to help vent the steam from the tub.
•Press and hold Extra Dry for three seconds to
activate.
•The Night Dry option is selected by default for all
cycles for which it is available, except the Normal
cycle.
•To add the Night Dry option to the Normal cycle,
press and hold Extra Dry for 3 seconds.
Delay Start
The Delay Start feature delays the start of a selected
cycle. Each time the Delay Start button is pressed,
the delay time increases by an hour. The delay
time can be set from 1 to 12 hours, in one-hour
increments.
Before 106XX

For Authorized Service TechniciansFor Authorized Service Technicians
- 13 -
Cycles
Select your desired cycle.
Before 106XX
Auto
This cycle senses the soil amount and soil toughness
and is optimized to achieve the best cleaning.
•For steam models, this cycle has the added power
of steam.
Heavy
This cycle is for heavily soiled dishes and dishes with
hardened on soil. The Heavy cycle defaults to the
strongest spray intensity and uses it to wash heavily
soiled dishes.
•For steam models, this cycle has the added power
of steam.
Delicate
china and stemware.
•For steam models, this cycle has the added power
of steam.
Normal
This cycle is for moderately soiled, everyday loads.
Select the Night Dry option if leaving dishes
overnight. Press and hold Extra Dry for three
seconds to activate Night Dry.
Turbo
This cycle will clean heavily soiled dishes in an hour
using slightly more energy and water. Select the
Extra Dry options for better drying.
Download Cycle
Use a dedicated cycle downloadable via Wi-Fi or
NFC.
Machine Clean
This cycle is for cleaning the inside of the dishwasher.
Use the cycle without dishes in the machine. It
eliminates residual soils, odor, white spots, and other
dirt. Add citric acid or another cleaning agent for more
effective results.
•Press and hold Heavy for three seconds to activate.
NOTE
•The Machine Clean
cycles. To activate or deactivate the icon, press the
Delicate button for three seconds.
Rinse
This cycle is a quick rinse for dishes that will not be
washed immediately. The cycle rinses dishes that
have excess soil to soften dried on residue. Rinsing
the dishes helps prevent odors in the dishwasher. No
detergent should be used.
•Press and hold Normal for three seconds to
activate.
Express
This cycle will quickly clean lightly soiled dishes.
(Time : 33 minutes) Select the Extra Dry option or
another cycle for better drying.
•Press and hold Turbo for three seconds to activate.
NOTE
•Rinse, Turbo, and Express cycles do not have
drying or have a shortened dry time. For better
drying performance, open the door after these
cycles or select a different cycle.
Options
Select the desired cycle button and then select the
options for that cycle.
Dual Zone
This option automatically sets the spray intensity to
soft for the upper spray arm and strong for the lower
spray arm. Place heavily soiled dishes like plates and
bowls in the lower rack and lightly soiled dishes like
cups and small plates in the upper rack to get the
best results.
Half Load
This option washes intensively by selecting the upper
or lower racks. For small loads, use just the upper
or lower rack to save energy and time. By pressing
the Half Load button, the settings , and the
cancellation of the Half Load option are available.
Energy Saver
This option saves energy by reducing the wash
and rinse temperatures. Wash time is increased to
maintain wash performance. Do not use this cycle
with heavily soiled dishes.
High Temp
Raises the main wash temperature to improve
cleaning.
Extra Dry
Select the Extra Dry option for better drying
performance. This option adds extra drying time to
the cycle and raises the heated rinse temperature.
•When the rinse aid is empty, the Extra Dry option is
selected automatically.
Night Dry
Dishes are often left in the dishwasher overnight after
the cycle ends. This can result in the steam inside
the tub condensing on dishes, leaving them wet. The
Night Dry option runs the ventilation fan periodically
to help vent the steam from the tub.
•Press and hold Extra Dry for three seconds to
activate.
•The Night Dry option is selected by default for all
cycles for which it is available, except the Normal
cycle.
•To add the Night Dry option to the Normal cycle,
press and hold Extra Dry for 3 seconds.
Delay Start
The Delay Start feature delays the start of a selected
cycle. Each time the Delay Start button is pressed,
the delay time increases by an hour. The delay
time can be set from 1 to 12 hours, in one-hour
increments.
Before 106XX

For Authorized Service Technicians
- 14 -
Cycles
Select your desired cycle.
Auto
This cycle senses the soil amount and soil toughness
and is optimized to achieve the best cleaning.
Heavy
This cycle is for heavily soiled dishes and dishes with
hardened on soil. The Heavy cycle defaults to the
strongest spray intensity and uses it to wash heavily
soiled dishes.
Delicate
Use this cycle to clean delicate items such as fine
china and stemware.
Normal
This cycle is for moderately soiled, everyday loads.
Select the Night Dry option if leaving dishes
overnight. Press and hold Extra Dry for three
seconds to activate Night Dry.
•After the cycle ends, the fan runs for an hour to help
vent the warm, moist air in the tub. You can stop the
fan by opening the door after the cycle ends.
Turbo
This cycle will clean heavily soiled dishes in an hour
using slightly more energy and water.
•This cycle does not have drying. Select the Extra Dry
and Night Dry option or another cycle for better drying.
Download Cycle
Use a dedicated cycle downloadable via Wi-Fi or
NFC.
NOTE
•Only the cycle code for the current Download cycle
appears on the appliance. See the smartphone app
for cycle codes, names, and more information about
the available cycles.
- Default Cycle : P1. Pots & Pans
Machine Clean
This cycle is for cleaning the inside of the dishwasher.
Use the cycle without dishes in the machine. It
eliminates residual soils, odor, white spots, and other
dirt. Add citric acid or another cleaning agent for more
effective results.
•Press and hold Heavy for three seconds to activate.
Rinse
This cycle is a quick rinse for dishes that will not be
washed immediately. The cycle rinses dishes that
have excess soil to soften dried on residue. Rinsing
the dishes helps prevent odors in the dishwasher. No
detergent should be used.
•This cycle does not have drying.
•Press and hold Normal for three seconds to
activate.
Express
This cycle will quickly clean lightly soiled dishes.
(Time : 34 minutes)
•This cycle does not have drying. Select the Extra
Dry and Night Dry option or another cycle for better
drying.
•Press and hold Turbo for three seconds to activate.
After 106XX
Options
Select the desired cycle button and then select the
options for that cycle.
Dual Zone
This option automatically sets the spray intensity to
soft for the upper spray arm and strong for the lower
spray arm. Place heavily soiled dishes like plates and
bowls in the lower rack and lightly soiled dishes like
cups and small plates in the upper rack to get the
best results.
Half Load
This option washes intensively by selecting the upper
or lower racks. For small loads, use just the upper
or lower rack to save energy and time. By pressing
the Half Load button, the settings , and the
cancellation of the Half Load option are available.
Energy Saver
This option saves energy by reducing the wash
and rinse temperatures. Wash time is increased to
maintain wash performance. Do not use this cycle
with heavily soiled dishes.
After 106XX
High Temp
Raises the main wash temperature to improve
cleaning.
If the High Temp option is added to a cycle, the
indicator
a
stays lit at the end of the cycle if the
dishes were properly sanitized (on some models). If
the dishwasher could not properly sanitize the dishes
because the High Temp option was not selected,
the cycle was interrupted or the water could not be
heated to the required temperature, the indicator will
not light up at the end of the cycle. Open and close
the door or press POWER to turn the indicator off.
NOTE
•This high temperature rinse sanitizes dishes and
glassware in accordance with the NSF/ANSI
Standard 184 for residential dishwashers. Certified
residential dishwashers are not intended for use in
licensed food establishments. Only sanitizing cycles
have been designed to meet the requirements for
soil removal and sanitization efficacy. There is no
intention, either directly or indirectly, that all cycles
on a certified machine have passed the sanitization
performance test.
Extra Dry
Select the Extra Dry option for better drying
performance. This option adds extra drying time to
the cycle and raises the heated rinse temperature.
•When the rinse aid is empty, the Extra Dry option is
selected automatically.
Night Dry
Dishes are often left in the dishwasher overnight after
the cycle ends. This can result in the steam inside
the tub condensing on dishes, leaving them wet. The
Night Dry option runs the ventilation fan periodically
to help vent the steam from the tub.
•Press and hold Extra Dry for three seconds to
activate.
•The Night Dry option is selected by default for all
cycles for which it is available, except the Normal
cycle.
•To add the Night Dry option to the Normal cycle,
press and hold Extra Dry for 3 seconds.
Delay Start
The Delay Start feature delays the start of a selected
cycle. Each time the Delay Start button is pressed,
the delay time increases by an hour. The delay
time can be set from 1 to 12 hours, in one-hour
increments.

For Authorized Service TechniciansFor Authorized Service Technicians
- 15 -
Options
Select the desired cycle button and then select the
options for that cycle.
Dual Zone
This option automatically sets the spray intensity to
soft for the upper spray arm and strong for the lower
spray arm. Place heavily soiled dishes like plates and
bowls in the lower rack and lightly soiled dishes like
cups and small plates in the upper rack to get the
best results.
Half Load
This option washes intensively by selecting the upper
or lower racks. For small loads, use just the upper
or lower rack to save energy and time. By pressing
the Half Load button, the settings , and the
cancellation of the Half Load option are available.
Energy Saver
This option saves energy by reducing the wash
and rinse temperatures. Wash time is increased to
maintain wash performance. Do not use this cycle
with heavily soiled dishes.
After 106XX
High Temp
Raises the main wash temperature to improve
cleaning.
If the High Temp option is added to a cycle, the
indicator
a
stays lit at the end of the cycle if the
dishes were properly sanitized (on some models). If
the dishwasher could not properly sanitize the dishes
because the High Temp option was not selected,
the cycle was interrupted or the water could not be
heated to the required temperature, the indicator will
not light up at the end of the cycle. Open and close
the door or press POWER to turn the indicator off.
NOTE
•This high temperature rinse sanitizes dishes and
glassware in accordance with the NSF/ANSI
Standard 184 for residential dishwashers. Certified
residential dishwashers are not intended for use in
licensed food establishments. Only sanitizing cycles
have been designed to meet the requirements for
soil removal and sanitization efficacy. There is no
intention, either directly or indirectly, that all cycles
on a certified machine have passed the sanitization
performance test.
Extra Dry
Select the Extra Dry option for better drying
performance. This option adds extra drying time to
the cycle and raises the heated rinse temperature.
•When the rinse aid is empty, the Extra Dry option is
selected automatically.
Night Dry
Dishes are often left in the dishwasher overnight after
the cycle ends. This can result in the steam inside
the tub condensing on dishes, leaving them wet. The
Night Dry option runs the ventilation fan periodically
to help vent the steam from the tub.
•Press and hold Extra Dry for three seconds to
activate.
•The Night Dry option is selected by default for all
cycles for which it is available, except the Normal
cycle.
•To add the Night Dry option to the Normal cycle,
press and hold Extra Dry for 3 seconds.
Delay Start
The Delay Start feature delays the start of a selected
cycle. Each time the Delay Start button is pressed,
the delay time increases by an hour. The delay
time can be set from 1 to 12 hours, in one-hour
increments.

For Authorized Service Technicians
- 16 -
Control Panel
2
1
4
3
1
Power
For Steam Models(LSDF9897**, LDT7808**, LSDT9908**, LDP7708**, SKSDW24***, LDT6809**,
LDP6809**, LDPS6844**, LDP7808**, LDP6810**, LDTS555**) Before 106XX
•Press the Power button to turn power on and
off.
•After the cycle is complete, the power
automatically turns off for purposes of safety and
economy.
•If there is a power surge, power outage, or
disruption of any kind, power is automatically
turned off for safety.
•When power is connected again, it will turn on
automatically and resume the cycle.
2
Display
•: Digital Display
- The digital display on the control panel shows
the ESTIMATED cycle time. When the cycle
and options are selected, the display shows
the total estimated time to complete those
selections. During operation, the display shows
the remaining estimated operating time.
NOTE
•The estimated time shown on the display does
not include delay times for heating water, etc.
•If Delay Start is selected, the display shows the
delay time in hours.
•Cycle time may vary depending on the soil level
of your load.
•: Control Lock
- The Control Lock feature helps prevent
settings from being changed during a cycle.
Selecting this feature locks all of the buttons,
except for the Power button, on the control
panel. This feature does not lock the door.
- While a cycle is running, press and hold Half
Load and Energy Saver simultaneously for
three seconds to activate or deactivate Control
Lock.
•To start a new cycle, deactivate Control Lock.
•:Rinse Aid Icon
- This icon illuminates when the rinse aid level is
low. The LED automatically shuts off when the
•Refer to the Rinse Aid Dispenser Adjustment
section.
•: Machine Clean & Sanitized Icon
①Machine Clean
- This cycle is for cleaning the inside of the dishwasher.
Use the cycle without dishes in the machine. It
eliminates residual soils, odor, white spots, and other
dirt. Add citric acid or another cleaning agent for more
effective results.
- Press and hold Heavy for three seconds to activate.
- This icon flashes during cycle setup every 30
cycles. To activate or deactivate the icon, press
the Delicate button for three seconds.
②Sanitized (on some models)
- If the Steam option is added to a cycle, this
icon indicator stays lit at the end of the cycle if
the dishes were properly sanitized.
•: Wi-Fi
- When the appliance is connected to the
internet through a home Wi-Fi network, this
icon illuminates.
- Press and hold Delay Start for approximately
three seconds to connect to the network.
NOTE

For Authorized Service TechniciansFor Authorized Service Technicians
- 17 -
3
Cancel
•The drain pump activates and the cycle cancels.
power turns off.
•Press and hold Start for three seconds to
activate.
4
Start
•To operate the machine, either press Start and
close the door within four seconds or close the
door and press Start.
•If Start button is not pressed to start the cycle,
an alert will sound.
Chime On/Off
•To activate or deactivate the button sounds,
press and hold Dual Zone and Energy Saver
simultaneously for three seconds. The error alert
sound cannot be turned off.

For Authorized Service Technicians
- 18 -
Cycles
Select your desired cycle.
Auto
This cycle senses the soil amount and soil toughness
and is optimized to achieve the best cleaning.
Heavy
This cycle is for heavily soiled dishes and dishes with
hardened on soil. The Heavy cycle defaults to the
strongest spray intensity and uses it to wash heavily
soiled dishes.
•This cycle has the added power of steam.
Delicate
china and stemware.
•This cycle has the added power of steam.
Refresh
This cycle freshens up and warms dishes that have
been unused for a long time.
•Do not use detergent when using this cycle.
Normal
This cycle is for moderately soiled, everyday loads.
Select the Night Dry option if leaving dishes
overnight. Press and hold Extra Dry for three
seconds to activate Night Dry.
•After the cycle ends, the fan runs for an hour to help
vent the warm, moist air in the tub. You can stop the
fan by opening the door after the cycle ends.
Turbo
This cycle will clean heavily soiled dishes in an hour
using slightly more energy and water.
•This cycle does not have drying. Select the Extra
Dry and Night Dry option or another cycle for better
drying.
Download Cycle
Use a dedicated cycle downloadable via Wi-Fi or
NFC.
NOTE
•Only the cycle code for the current Download cycle
appears on the appliance. See the smartphone app
for cycle codes, names, and more information about
the available cycles.
- Default Cycle : P1. Pots & Pans
Rinse
This cycle is a quick rinse for dishes that will not be
washed immediately. The cycle rinses dishes that
have excess soil to soften dried on residue. Rinsing
the dishes helps prevent odors in the dishwasher. No
detergent should be used.
•This cycle does not have drying.
•Press and hold Normal for three seconds to
activate.
Express
This cycle will quickly clean lightly soiled dishes.
(Time : 33 minutes)
•This cycle does not have drying. Select the Extra
Dry and Night Dry option or another cycle for better
drying.
•Press and hold Turbo for three seconds to activate.
Machine Clean
- This cycle is for cleaning the inside of the
dishwasher. Use the cycle without dishes in
the machine. It eliminates residual soils, odor,
white spots, and other dirt.Add citric acid
or another cleaning agent for more effective
results.
•Press and holdHeavy for three seconds to
activate.
Before 106XX

For Authorized Service TechniciansFor Authorized Service Technicians
- 19 -
Options
Select the desired cycle button and then select the
options for that cycle.
Dual Zone
This option automatically sets the spray intensity to
soft for the upper spray arm and strong for the lower
spray arm. Place heavily soiled dishes like plates and
bowls in the lower rack and lightly soiled dishes like
cups and small plates in the upper rack to get the
best results.
Half Load
This option washes intensively by selecting the upper
or lower racks. For small loads, use just the upper
or lower rack to save energy and time. By pressing
the Half Load button, the settings , and the
cancellation of the Half Load option are available.
Energy Saver
This option saves energy by reducing the wash
and rinse temperatures. Wash time is increased to
maintain wash performance. Do not use this cycle
with heavily soiled dishes.
Steam
This option adds steam at the start of the cycle to
improve wash performance.
High Temp
Raises the main wash temperature to improve
cleaning.
Extra Dry
Select the Extra Dry option for better drying
performance. This option adds extra drying time to
the cycle and raises the heated rinse temperature.
•When the rinse aid is empty, the Extra Dry option is
selected automatically.
Night Dry
Dishes are often left in the dishwasher overnight after
the cycle ends. This can result in the steam inside
the tub condensing on dishes, leaving them wet. The
Night Dry option runs the ventilation fan periodically
to help vent the steam from the tub.
•Press and hold Extra Dry for three seconds to
activate.
•The Night Dry option is selected by default on all
cycles for which it is available, except the Normal
cycle.
•To add the Night Dry option to the Normal cycle,
press and hold Extra Dry for 3 seconds
Delay Start
The Delay Start feature delays the start of a selected
cycle. Each time the Delay Start button is pressed,
the delay time increases by an hour. The delay
time can be set from 1 to 12 hours, in one-hour
increments.
Before 106XX

For Authorized Service Technicians
- 20 -
Control Panel
1
Power
•Press the Power button to turn power on and
off.
•After the cycle is complete, the power
automatically turns off for purposes of safety and
economy.
•If there is a power surge, power outage, or
disruption of any kind, power is automatically
turned off for safety.
•When power is connected again, it will turn on
automatically and resume the cycle.
2
Display
•: Digital Display
- The digital display on the control panel shows
the ESTIMATED cycle time. When the cycle
and options are selected, the display shows
the total estimated time to complete those
selections. During operation, the display shows
the remaining estimated operating time.
NOTE
•The estimated time shown on the display does
not include delay times for heating water, etc.
•If Delay Start is selected, the display shows the
delay time in hours.
•Cycle time may vary depending on the soil level
of your load.
•: Control Lock
- The Control Lock feature helps prevent
settings from being changed during a cycle.
Selecting this feature locks all of the buttons,
except for the Power button, on the control
panel. This feature does not lock the door.
- While a cycle is running, press and hold Half
Load and Energy Saver simultaneously for
three seconds to activate or deactivate Control
Lock.
•To start a new cycle, deactivate Control Lock.
•: Rinse Aid Icon
- This icon illuminates when the rinse aid level is
low. The LED automatically shuts off when the
rinse aid is refilled or the level is set to 0.
•Refer to the Rinse Aid Dispenser Adjustment
section.
•
a
: Machine Clean & Sanitized Icon
- Machine Clean
This cycle is for cleaning the inside of the
dishwasher. Use the cycle without dishes in the
machine. It eliminates residual soils, odor, white
spots, and other dirt. Add citric acid or another
cleaning agent for more effective results.
Press and hold Heavy for three seconds to
activate.
NOTE
•This icon flashes during cycle setup every 30
cycles. To activate or deactivate the icon, press
the Delicate button for three seconds.
- Sanitized (on some models)
If the Steam option is added to a cycle, this
icon indicator stays lit at the end of the cycle if
the dishes were properly sanitized.
•: Wi-Fi
- When the appliance is connected to the
internet through a home Wi-Fi network, this
icon illuminates.
- Press and hold Delay Start for approximately
three seconds to connect to the network.
Other manuals for LDT7797 Series
1
This manual suits for next models
23
Table of contents
Other LG Dishwasher manuals