LG LDF5545ST Manuel utilisateur

DISHWASHER

SERVICE MANUAL

NOTE

For Authorized Service Technician

MODEL : LDF5545ST

BEFORE SERVICING THE UNIT, PLEASE READ THIS MANUAL CAREFULLY

FOR SAFETY AND CORRECT SERVICES.

For Authorized Service Technician

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CONTENTS

1. CAUTION ............................................................................................................................................................................ 4

2. SPECIFICATIONS ........................................................................................................................................................... 5

3. FEATURES & TECHNICAL EXPLANATION ...................................................................................................... 6

4. PARTS NAME .................................................................................................................................................................. 13

5. PROGRAM CHART ....................................................................................................................................................... 14

6. HOW TO DISASSEMBLE ........................................................................................................................................... 18

7. TROUBLE SHOOTING METHODS ......................................................................................................................... 28

7-1. TROUBLE SHOOTING ACCORDING TO DISPLAY ERROR MESSAGE .................................... 28

7-2. TROUBLE SHOOTING METHODS .............................................................................................................. 30

7-3. TROUBLE DIAGNOSES AND REPAIR BY SYMPTOM ...................................................................... 41

8. INSTALLATION INSTRUCTION ............................................................................................................................... 44

9. EXPLODED VIEW .......................................................................................................................................................... 53

10. WIRING DIAGRAM .................................................................................................................................................... 63

10-1. WIRING DIAGRAM ...................................................................................................................................... 63

10-2. MAIN PCB ........................................................................................................................................................ 64

10-3. DISPLAY PCB .................................................................................................................................................. 65

For Authorized Service Technician

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- 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 can not be responsible

for the interpretation of this information, nor can it

assume any liability in connection with its use.

CAUTION !

For Authorized Service TechnicianFor Authorized Service Technician

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2. SPECIFICATION

ITEM SPECIFICATION

Rated Voltage / Frequency AC 120V/60Hz

Installation Built-In

Place Settings 15

Product Dimension(in) 23 3/4"*24 ⅝"*33 ⅝"

Product Weight(lbs) 72~82lbs

Door Color White, Black, Stanless

Tub Material Stainless Steel

Control Electronics

Rated Power(Watt) 1,350

Heater Power(Watt) 1,200

Programs 10 (XD4&5 : 9)

Upper Rack Position Adjustable

Lower Rack Fold down

Water Consumption 9.4 ~ 20.5 (Normal)

Power Consumption(kWh/year) 258 (Nomal)

Operating Time (min) 110 ~ 150 (Normal)

Fan Dry System Yes

Delay Start Function Yes

Auto-Off Power Switch Yes

Process Monitor Yes

Wash Level 5

Racks Nylon Coating

Operating Water Pressure (Bar) 20-120 (140-830kPa)

For Authorized Service Technician

- 6 -

3. FEATURES & TECHNICAL EXPLANATION

PRODUCT FE

ATURES

TrueSteam™ Technology (not available on all models)

dishes.

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.

Smart 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 TechnicianFor Authorized Service Technician

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3. FEATURES & TECHNICAL EXPLANATION

LDF5545ST

Control Panel

For Non-Steam Models

4 5

Power

Press the Power button to turn power on and

dishwasher powers off.

turns off for purposes of safety and economy.

off for safety.

automatically and resume the cycle.

Rinse Aid Icon

This icon illuminates when the rinse aid level is low

The LED automatically shuts of

f when the rinse aid is

Digital Display

The digital display on the control panel shows the

ESTIMA

TED cycle time. When the dishwasher is

estimated time to complete those selections. During

operating time.

NOTE

The estimated time shown on the display does not

If Delay Start

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

Power

on the control panel. This feature does not lock the

door.

Press and hold Dual Zone for three seconds to

activate or deactivate Control Lock.

Cancel

The drain pump activates and the cycle cancels.

turns off.

Press and hold Start for three seconds to activate.

Start

the door within four seconds or close the door and

press Start.

Beep On/Off

Half Load button for three seconds. The error alert

sound can not be turned off.

Connect (for Wi-Fi models)

When the appliance is connected to the internet

Press and hold Delay Start for approximately three

seconds to connect to the network.

For Authorized Service Technician

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For Steam Models

4 5

Power

Press the Power button to turn power on and

dishwasher powers off.

turns off for purposes of safety and economy.

off for safety.

automatically and resume the cycle.

Rinse Aid Icon

This icon illuminates when the rinse aid level is low

The LED automatically shuts of

f when the rinse aid is

Digital Display

The digital display on the control panel shows the

ESTIMA

TED cycle time. When the dishwasher is

estimated time to complete those selections. During

operating time.

NOTE

The estimated time shown on the display does not

If Delay Start

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

Power

on the control panel. This feature does not lock the

door.

Press and hold Dual Zone for three seconds to

activate or deactivate Control Lock.

Cancel

The drain pump activates and the cycle cancels.

turns off.

Press and hold Start for three seconds to activate.

Start

the door within four seconds or close the door and

press Start.

Beep On/Off

Half Load button for three seconds. The error alert

sound can not be turned off.

Connect

When the appliance is connected to the internet

Press and hold Delay Start for approximately three

seconds to connect to the network.

For Authorized Service TechnicianFor Authorized Service Technician

- 9 -

Cycles

Select your desired cycle.

Auto

soil toughness and is optimized to achieve the best

cleaning.

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.

of steam.

Delicate

china and stemware.

of steam.

Refresh (Steam Models)

This cycle freshens up and warms dishes that have

been unused for a long time.

Do not use detergent when using this cycle.

Normal

Select the

Night Dry option if leaving dishes

overnight. Press and hold

Extra Dry for three

seconds to activate Night Dry

urbo

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

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

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

drying or have a shortened dry time. For better

cycles or select a different cycle.

For Authorized Service Technician

- 10 -

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 rack to save energy and time. By pressing

the

Half Load and the

cancellation of the Half Load option are available.

Energy Saver

This option saves energy by reducing the wash

and rinse temperatures. W

ash time is increased to

maintain wash performance. Do not use this cycle

with heavily soiled dishes.

Pre-Steam (Steam Models)

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 20 minutes of extra

drying time to the cycle and raises the heated rinse

temperature.

Night Dry

Dishes are often left in the dishwasher overnight after

the cycle ends. This can result in the steam inside

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.

Delay Start

The Delay Start feature delays the start of a selected

cycle. Each time the Delay Start

the delay time increases by an hour. The delay

increments.

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