LG TRAINING PRESENTATION - Appliance Assistant

LG TRAINING PRESENTATIONFall 2011 Appliance TrainingLG TRAINING PRESENTATIONS

LDF6920

Dual-Evaporator Refrigerator

WT5101

Dishwasher

Top-Load Washing Machine

LFX31925

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LG Electronics Alabama Inc., attn: John Ferguson, 201 James Record Road Bldg 3, Huntsville AL 35813

LG Electronics Training Seminar Survey

Thank you for attending a LG Technical Training Seminar. Your presence today helps to build and strengthen the LG service network. For this, I am deeply grateful. I ask for your assistance on one more matter. Below, is a short survey in which your honest answers will help LG improve its training to you, my customer. Please feel free to also add any additional comments that you may have. If you do not wish to return this survey to the trainer, youmay forward it directly to me at the contact information at the bottom of the page.

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LG Electronics Alabama Inc., attn: John Ferguson, 201 James Record Road Bldg 3, Huntsville AL 35813

LG Electronics Training Seminar Survey

Home Appliance Training ClassProduct: HA Appliances

Company:

Technician:

Date: Score:Circle the best answer

LFX31925 Refrigerator

1. What component is located between the Refrigerator & Freezer Evaporators allowing Dual Evaporator operation?

a. Gate Valve b. Check Valve c. Drier

2. The Freezer Fan is used to circulate air in the a. Freezer only b. Freezer & Refrigerator c. Freezer, Refrigerator & Pantry

3. What component controls refrigerant flow direction?a. Check Valve b. Damper Valve c. 3-Way Valve

4.Supply Voltage to the Twist Tray Ice Maker is a. 12 VDC b. 120 VAC c. 12 VAC

WT5101 Top Load Washer

5. The Clutch Shifter Assembly a. Locks the Rotor to Stator Assembly b. Allows the Basket & Pulsator to operate independently or together c. Can not be used in the Normal Cycle

6. The Water Inlet Valve Solenoids are energized by a. 120 VAC b. 120 VDC c. 5 to 13 VDC

Circle the best answer

7. The Tub Heater Hi Limit Thermostat a. is in series with the Tub Heater b. can create a LE Error Code c. controls the ‘Extra Hot’ water temperature

LDF6920ST Dishwasher

8. The spray arms switch between upper and lower bya. gate valve b. vario motor and vario valvec. reversing main wash motor

9. To dry dishes LG usesa. a 1200 watt heaterb. by using rinse aid and flash drying by opening doorc. a hybrid condensing system

10. Water fill is controlled bya. flow sensorb. time and orifice in inlet valvec. float valve

Slide # 1

SMART PULL HANDLE

FRESH AIR FILTER

4 COMPARTMENT CRISPER SYSTEM

SLIM SPACE PLUS ICE MAKER & WATER FILTER

10 YEAR LINEAR COMPRESSOR WARRANTY

3 TIER ORGANIZATION FREEZER

TALL ICE & WATER

DISPENSER

SMART COOLING SYSTEM

REFRIGERATOR & FREEZER EVAPORATORS

31 Cu. Ft. SMART DIAGNOSIS

LFX31925SB

HUMIDITY SENSOR

Slide # 2

Slide # 3

Text PageIntroductionThermistorsPantry DamperFan MotorsLEDsHumidity SensorBeta Duct HeaterIce MakerWater Pilot Valve & FilterAuger MotorDispenserMain PCBCapacitorsError CodesTest ModeDual Evaporators

Slide # 4

OWNERS MANUAL INFO

AIR FILTER

Slide # 5

Slide # 6

OWNERS MANUAL INFO

NEW

Slide # 7

Slide # 8

FILTER

LEDs / 12 VDC MotorFilter # ACW73717301 (Décor Assm.)

Slide # 9

Slide # 10

Slide # 11

r dH F dH

F dS Freezer r dS Refrigerator

ERROR CODES

Note: These do NOT display on defect.

PRESS & HOLD Freezer & Ice Plus

Slide # 12

Located on REAR of Cabinet

Slide # 13

Main PCB

Located on Rear

Compressor Inverter & Components on ONE

Slide # 14

REFRIGERATOR SECTIONAIR FILTER & FAN & LEDs

WATER FILTER

PANTRY DAMPER PANTRY THERMISTOR

REFRIG FAN MOTOR

PANTRY CONTROL

PANTRY LED

SIDE LEDSIDE LED

Slide # 15

REMOVING REAR PANELS

REFRIGERATOR

Remove Caps Remove Screws

Pull panel forward

Remove Quick Connect

Slide # 16

FREEZERAfter Removing ALL Compartments Remove 1 screw in each Rail Lift Door off as usual

Remove Both Rails on both sides

NO SCREW

NOTE: It is possible to remove rear panel

without removing side rails

Removing Rear Panel

Slide # 17

There are NO SCREWS securing Panel

BOTH FAN MTRS THERMISTOR CONNECTOR

Pull from TOP & Right side

Slide # 18

Simple Hook placed in the Top Vent & Freezer Thermistor opening – Then PULL

Slide # 19

Pantry Temperature Selection

MEAT 34ºF

DELI 38ºF

PRODUCE 41ºF

SELECT

Slide # 20

Pantry Thermistor & LED

NOTE: Pantry LED not located on all models

Slide # 21

REFRIGERATOR SIDE LEDs

ICE ROOM AIR

SUPPLY

&

RETURN

Left

Right

Note: Care must be taken when removing LED lens

Slide # 22

REFRIGERATOR TOP LED & THERMISTOR

THERMISTOR

Slide # 23

WATER FILTER & BYPASS

Part # ABN73019101 Cap Assm (By Pass)

Slide # 24

Right Side Switch & SMART DIAGNOSIS

Slide # 25

Slide # 26

DOOR SWITCH, SMART DIAGNOSIS, HUMIDITY SENSOR, ROOM THERMISTOR

WIRING TO LED

Slide # 27

REFRIGERATOR EVAPORATOR

Slide # 28

FREEZER EVAPORATOR

Slide # 29

Thermistors

Slide # 30

Freezer

RefrigeratorRoom/Ambient

Pantry

Ice RoomFreezer Refrigerator Defrost Defrost

Slide # 31

Pantry, Refrigerator, Room and Defrost

Slide # 32

Freezer and Ice Room

Slide # 33

Refrigerator Check the White to White

CON 7

THERMISTORS

NOTE: Same Resistance values Remember an ERROR CODE will only appear IF - 0 or 5 VDC is

detected at the Main PCB

Pantry Check the White/Red to White/Red

CON 6

CON 5

Room / Ambient Check the Brown to Brown

Slide # 34

Pantry Temperature Selection

SWITCH

Produce 41ºF (5ºC) Deli 38ºF (3ºC) Meat 34ºF (1ºC)

Slide # 35

PANTRY DAMPER MOTOR

Slide # 36

WH/RD Becomes WH BL Becomes WH

WH Becomes RD OR Becomes YL

PK Becomes BL BR Becomes WH

OPEN CLOSED

PANTRY DAMPER

Slide # 37

Ice Room Check Blue to Blue

NOTE: Same Resistance values Remember an ERROR CODE will only appear IF - 0 or 5 VDC is

detected at the Main PCB

Freezer Check Blue/White to Blue/White

THERMISTORS

ER IS

CON 7

CON 5

Slide # 38

Defrost Thermistors

Freezer

Refrigerator

Slide # 39

Freezer Defrost Check the Brown to Brown

Refrigerator Defrost Check the Gray to Gray

Defrost Thermistors

CON 7

CON 7

Slide # 40

Defrost Heater / Thermal FuseRefrigerator

NOTE: 160 Watt Heater

Slide # 41

Freezer Defrost Components

NOTE: 300 Watt Heater

Slide # 42

Ice Room, Condenser, Freezer Fan Motors

V

V

V

G

G

G

F

F

F

Slide # 43

V

G

F

Refrigerator Fan Motor

Slide # 44

FAN MOTORSREFRIGERATOR

CONDENSER

ICE ROOMFREEZER

Slide # 45

( 3 ) ( 2 ) ( 1 ) F V Gnd

Pur Rd Blk

G – F = Signal Voltage 2 – 4 VDC

G – V = Supply Voltage 10 – 15 VDC

Voltage at Fan Motor Connector

NOTE: Measured Voltages when Component connected to harness

Slide # 46

Fan MotorsRefrigerator Check the Refrig Fan Motor Voltages

(3) (2) (1)

(3) (2) (1)

Freezer Check the Freezer Fan Motor Voltages

(3) (2) (1) F V Gnd

Pur Rd Blk

CON 6

CON 7

Slide # 47

Ice Room Check the Ice Rm Fan Motor Voltages

Condenser Check the Condenser Fan Motor Voltages

(3) (2) (1)

(3) (2) (1)

(3) (2) (1) F V Gnd

CON 7

CON 7

Slide # 48

Hepa Filter

12 VDC

Slide # 49

Slide # 50

LEDs

Note: Care must be taken when removing LED lens

Slide # 51

Not on Kenmore Brand

LEDs

Slide # 52

LEDs

Slide # 53

Freezer Switch

Slide # 54

Refrigerator Switches

Slide # 55

HUMIDITY SENSOR

Humidity Sensor increases/decreases Pillar Heater & Beta Duct Heater operation

Right Door Hinge Cover

BUZZER

SENSOR

Slide # 56

Non Replaceable Part Located in the Refrigerator Cabinet Section surrounding the ICE ROOM Supply Duct to the Left Refrigerator Door

BETA DUCT HEATER

Operation is controlled by the HUMIDITY SENSOR

Slide # 57

Removing Ice Maker

Slide # 58

NEW - Hole in Assembly has been replaced with an Insert

Slide # 59

ICE MAKER THERMISTOR

Senses Tray Temperature (Set Point is 16º to 18ºF)

ICE TRAY THERMISTOR(Sensor)

Slide # 60

POWER SUPPLY to ICE MAKER

PURPLE WHITE12 VDC

Slide # 61

RETURN

SUPPLY

ICE ROOM AIR FLOW

Slide # 62

1. Normal Cycle is 70 to 80 minutes PLUS Tray Temperature

2. Icemaker Tray must reach 16ºF to 18ºF sensed by tray sensor. (Note: Ice Room temperature should be 0º to 5ºF.)

3. Infrared ice level sensors stop ice production when ice bin is FULL! (See: Test Procedure)

4. Produces a minimum of 100 to 120 cubes per 24 Hours

5. Fill amounts range from 100ml to 110ml or 3.5 to 4.0 ounces. Fill monitored by Display PWB using Flow Meter.

6. Test Button on bottom of icemaker drive module can be PRESSED to start a cycle & perform a fill test.

7. Icemaker ON/OFF switch in OFF position

a. Icemaker Stops

b. Ice Room Temperature rises to approx. 20ºF (<32ºF)

c. Cubes remain frozen!

ICE MAKER FACTS

Slide # 63

1. Icemaker Input Voltage is 12VDC from Display PWB. See CON102 pins 1 & 3 Display PWB Assembly Diagram.

2. Icemaker Motor operates on 12VDC

3. Icemaker communicates to Display PWB thru 5VDC signals

4. No Components of the Icemaker are replaceable

5. Replace Icemaker as an assembly

6. Troubleshooting is simple!

7. Reminder: Icemakers require water, proper temperature & time to produce ice cubes!!

MORE ICE MAKER FACTS

Slide # 64

Troubleshooting

No Ice or Not Enough Ice

1. Is the ON/OFF switch pressed to ON?

2. Is the water supply valve turned ON?

3. Measure the Ice Room Temperature; Is it between 0º to 5ºF? If no, check freezer temp setting & airflow!

4. Is there water (or frozen cubes) in the tray? If no, see Next Slide for Failure Code ER-gF

5. Press the Test Switch: Does the tray turn and does it fill with water? If the icemaker harvests and fills, the Icemaker is OK!! If no, see Next Slide for Failure Code ER-It

6. Perform Ice Detector Sensing Circuit Test (Slide 78)

Slide # 65

ICE MAKER ASSEMBLY

Icemaker Failure Codes

Fill Error Water Fill Not Sensed!

Harvest Error Motor did not run or turn the tray!

Press ICE PLUS & FREEZER Buttons Simultaneously If either Failure Code Appears follow Test Procedures!

Slide # 66

ICE MAKER ASSEMBLY

Harvest Error Motor did not run or turn the tray!

Press the Test Button / IF icemaker does not run (turn tray) perform 12VDC input test (see Next Slide)!

Slide # 67

ICE MAKER ASSEMBLY

12VDC Input Voltage Test

1) Place meter leads between WH & PR on the AC Motor Assembly Connector.

2) If 12VDC is present, replace the Icemaker Assembly!

21

Slide # 68

Slide # 69

Slide # 70

12 VDC POWER SUPPLY TO ICE MAKER

Main PCB

Slide # 71

Main PCB

RD & WH/RD to IM

BO & WH/BK COMMUNICATION

Slide # 72

6 Pin connector left

door hinge

10 Pin Connector Left

Door Hinge

Slide # 73

12 VDC Supply to Ice Maker

12 VDC to Ice Maker at Upper Left Door Hinge

Slide # 74

REDRD/WH

BO

BK/WH

12 VDC IM POWER SUPPLY

- +

RX

TX

Communication

Communication

Slide # 75

LEFT REFRIGERATOR DOOR HINGE

Slide # 76

ICE MAKER ASSEMBLY


Press the Test Button / IF Icemaker Does Not Fill

1) Test IM Valve & Pilot Valve (See Wiring Diagrams)

2) Test 120VAC outputs from Icemaker / Test 120VAC from Main PWB to Pilot Valve. (See Wiring Diagrams)

3) Continued Next Slide

Slide # 77

ICE MAKER ASSEMBLY


Press the Test Button / IF Icemaker Does Fill

3) Test for pulsing 2 to 5VDC from Flow Meter @ Small Connector Left Door Hinge between BR/WH & GY/WH wires.

(See Wiring Diagrams) 4) In no pulsing VDC above, test for 5VDC from YL to BR/WH

Slide # 78

ICE MAKER ASSEMBLY

Slide # 79

SHORT CUT

OPEN FREEZER DRAWER

OBSERVE CODE DISPLAY

Wait 3 Minutes

Slide # 80

Removing Reservoir & Valve Panel

Slide # 81

RESERVOIR & FILL VALVES

Slide # 82

Blue – Neutral to Both Valves

BO – L1 from IM (SB)PUR – L1 from Dispenser PWB

CON 2

Slide # 83

Drop IM Assembly as Shown Place Red Lead (Red Arrow) Sky Blue wire(L1) to valve Neutral can be at Display Board (next slide) OR Left Dr Hinge OR Blue on

Main PCB on rear of Cabinet Press Test Switch

L1 to Secondary Valve SBPink wire behind Sky Blue

When cycled - Pink & Sky Blue to Neutral should read 120 VAC

Slide # 84

Slide # 85

NeutralOR see next Slide

Slide # 86

NEUTRAL at Upper Left Door Hinge

Slide # 87

OR SBTo IM Fill Valve L1 From IM to

Fill VL

Connector in the door at the ice maker

L1 L1

Ice Maker Water Fill Valve & Pilot Valve (Door)

PKRD

To Main PCB to Pilot Valve

YLL1 Supply

to IM

BLL1 Supply

to IM

Slide # 88

Note: IF you Cycle the IM and the Pilot Valve (Rear) engerizes – This tells you there is L1 to the IM – If Pilot Valve operates & the IM Fill VL (SB) does NOT see 120 Vac – The IM is defective. You should read 120 Vac when IM is filling at both Pink & Sky Blue to Neutral

Slide # 89

Sky Blue from IM changes to BO to Valve

Slide # 90

BO

SB

Slide # 92

NOISE FILTER

Capacitor on Pilot Valve A/C Connections

Slide # 93

WATER FLOW SENSOR

Flow Meter for I/M water flow can be checked at top left hinge small connector. GR/WH & BR/WH Pulsing 5VDC

Flow Meter can also be checked at Display Assem on CON102

WATER INLET VALVE and NOISE FILTER

Slide # 94

Slide # 95

L1 to Pilot VL from IM

Main PCB

Slide # 96

14 mfd @ 240 vac - located on rear of cabinet next to Main PCB

Auger Motor CapacitorDispenser PCB CON 2 Pins 5 & 6

0CZZJB2014K - Capacitor

Slide # 97

Auger Motor –

Not in Use

Slide # 98

CUBED ICEN= GREEN

RUN= RED (L1)

START=BLUE

Relay 2 Energized

Slide # 99

N= GREEN

RUN= RED (L1)

START=BLUE

CRUSHED ICE

Relay 1 Energized

Slide # 100

DISPENSER

Slide # 101

Water Selection Switch

LED

Ice Selection Switch

CONNECTORS 101

103

104

102

Slide # 102

Cap Duct Motor 12VDC

Water FillDispenser PWB

CON 2

CON 1

Slide # 103

Slide # 104

Main PCBCompressor Inverter & Components on ONE

CON 5

CON 6

CON 7

CON 3

CON 2

CON 1CON 201

AUGER MOTOR COMPRESSOR

Slide # 106

CON 5 CON 6 CON 7

CON 201CON 1

CON 3

CON 2

Slide # 107

CON 3

CON 2

PILLAR HTR

B DISPENSER PWB (L1)

V IM PWB PK

A NEUTRAL CON2

Pilot Valve

Slide # 108

CON 1 CON 201

Slide # 109

AUGER MOTOR COMPRESSOR

CAPACITORS

Slide # 110

r dH F dH

F dS Freezer r dS Refrigerator

ERROR CODES

Note: These do NOT display on defect.

PRESS & HOLD Freezer & Ice Plus

Slide # 111

Compressor, All Fans, Pantry Damper CLOSED Both Evaps Cooling

Compressor, All Fans, Pantry Damper OPEN ONLY Refrig Evap Cooling

Both DEFROST Heaters. Pantry Damper OPEN

PRESS Button Switch

NOTE: Fans continue to operate with doors OPEN

NOTE: Fans continue to operate with doors OPEN

NOTE: 88 88 & 22 22 Displays will terminate after 4 minutes

33 33 will terminate at 46ºF OR 4 times

TEST MODE

NOTE: All Error Codes must be cleared before initiating

Slide # 112

FREEZER DEFROST PROBLEM

FREEZER DEFROST SENSOR

REFRIGERATOR DEFROST PROBLEM

REFRIGERATOR DEFROST SENSOR

Slide # 113

DUAL EVAPORATORS

Slide # 114

1 Evaporator vs 2 Evaporator

Condenser

Compressor

Evaporator

Dryer

Capillary

1 Evaporator System

Condenser

Compressor

R-Evaporator

Dryer

R-Capillary

Parallel 2 Evaporator System

F-Evaporator

3 way Valve

F-Capillary Check Valve

What is different between 1 Evaporator system and 2 Evaporator system?

- Evaporator installed F-room- R-room is supplied cold air from F-room using damper system

- Evaporator installed each room- Refrigerant flow is controlled by the 3 way valve

2 Evaporator system Is more efficient than 1 Evaporator system (about 8%).

Refrigeration Cycle

Slide # 115Thursday, August 11, 2011 Confidential

FF Room

FZ Room

S-Pipe

Check Valve

Slide # 116

Condenser

Compressor

R-Evaporator

Dryer

R-Capillary

F-Evaporator

3 way Valve


R-Room Operation

Condenser

Compressor

R-Evaporator

Dryer

R-Capillary

F-Evaporator

3 way Valve


F-Room Operation

Operating Mode

There are 4 operating modes in 3way valve.

1. R-Room open 2. F-Room open 3. Both (F/R) Open 4. Pump Down (Both Close)

F-room temperature is satisfying

R-room temperature is unsatisfying

R-room temperature is satisfying

F-room temperature is unsatisfying

Refrigeration Cycle

Slide # 117

Condenser

Compressor

R-Evaporator

Dryer

R-Capillary

F-Evaporator

3 way Valve


Both open Operation

Test Mode 1

F/R-room temperature is very warm.(Initially installed, long time door opened, hot food input, etc.)

Condenser

Compressor

R-Evaporator

Dryer

R-Capillary

F-Evaporator

3 way Valve

F-Capillary

Pump Down

Collect refrigerant due to pressure unbalance between R-Evaporator and F-Evaporator.

3 way valve is closed and the compressor runs for 90sec.

This mode will be operated after F-room operation.Check valve and Pump Down operation

Generally, R room temperature is higher than F room. This means R Evaporator pressure is higher than F Evaporator.

Remaining refrigerant in the R Evaporator can flow backward to the F Evaporator due to different pressureThe Check Valve prevents the refrigerant from flowing backward.

To prevent refrigerant from being trapped in F Evaporator after F-room operationThe Pump Down mode stores the refrigerant in the condenser when the compressor is not running.

Check Valve

Operating ModeRefrigeration Cycle

Slide # 118

HA R& D Lab in N. America

Switch refrigerant to each evaporator after passing condenser.

3 Way Valve

CondenserEva(Left)

Eva(Right)

DRIER

3way VV CAPILLARYTUBE(left)

CAPILLARYTUBE (right)

COMP

Suction PIPE

OperatingCoil

ValveBODY

CheckValve

B yellowA grayCOM(B) blueCOM(A) blueB whiteA pink

Slide # 119

CON6

Slide # 120

3 Way Valve Harness connector (Blue)

Slide # 121

NOTESBefore attempting sealed system repair – initiate TEST MODE STEP 1

(88 88). This will open 3 Way Valve to both evaporators – unplug 3 way valve harness from chassis connector.

OR Plug Refrigerator into outlet – wait 6 to 12 seconds – unplug power cord &

unplug 3 Way Valve Harness from chassis connector.

Slide # 122

LFX31925SW

LFX31925SB

LFX31925ST Signature1 (Kenmore)


Model # LDF6920BB

Slide # 2

Basic operation of LG dishwashersWash Motor; Direct drive variable speed brushless DC motor

Drain motor; 120 VAC motor

Water heating; 1200 Watt heater submerged in sump assembly

Water Fill; 120 VAC solenoid valve, Flow sensor to fill to exact

amount regardless of water pressure within prescribed limits

Two level wash system to save energy and reduce water consumption by use of a diverter valve (Vario

valve)

Dry System; Condensing dry using a sealed dishwasher tank during

wash and rinse cycles to retain heat. In the dry cycle the damper is opened and

a 120 VAC fan motor is energized to draw hot moist air from the tank and cool room air from the floor area to cause condensation in the blower housing which drains by

a hose to the sump. The drain pump is energized to pump water to the drain.

Soil Sensing uses a Turbidly Sensor to add additional pre rinses

if needed based on soil level.

Dispensers; 120 VAC Wax motor.

Slide # 3

Washability

IssuesPhosphates are GONE!!Cloudy Glassware & on

Dark Plastics / What to do??

LG Label

Slide # 4

Tablets Supplied in D/W

Slide # 5

Dishwasher Detergent Additive

Use with Powder Detergent!

Slide # 6

Dishwasher Cleaner & Disinfectant

Periodic Use(Place cloudy items and No

Detergent in the dishwasher)

Directions for Use:1)Select & start longest cycle2)After 1st

wash & drain; stop dishwasher by opening door3)Pour 2 cups of white vinegar in the bottom of the dishwasher4)Close door to complete cycle White Vinegar

Slide # 7

Dishwasher Cleaner & Disinfectant

Periodic Use(Use with Empty Dishwasher and

No Detergent)

Directions for Use:1) Remove Cap / Not Wax Plug2) Place Bottle upside down in silverware basket in bottom rack3) Close dishwasher, run on hottest cycle / Sanitary

Slide # 8

Hard Water Areas

Slide # 9

Effects of Hard Water

Slide # 10

Combining these Prevents Hard Water Stains

Slide # 11

LG Service Issues

1)

Whistling Noise –

Chopper Blade / Current 2)

Washability

–

Sump Assembly Update / AJH31248604 / Current3)

Poor Washing & Drying –

Software Update / Extend Drying Time from 28 to 37 minutes / Current

4)

Sucking Noise –

Water Inlet Change / Bushing Added / Current5)

E1 Error –

Leaking from Front of Dishwasher / Water Inlet Venting / Current

6)

Sucking Noise –

Siphon Break / Add Hose to Water Inlet / 20107)

HE Error –

Software Error / 20098)

Vent Dripping Front Left Corner –

Vent Design Change / 2009

Slide # 12

15 Amp

10.5 to 27.5 Qt

Slide # 13

Turbidity (Soil) Sensor:Senses Clarity of water

Spray will be intensified with ‘Dirty’

water

Can Add Rinses (Max 3) or Decrease cycle time

Can be tested in ‘Test Mode’Lower soil levels uses 10.5 Qt for normal cycle, highest soil levels 27.5 Qt for normal cycle.

Slide # 14

Tech Sheet

Located behind Kick Panel( Includes Tech Sheets for 7 LG Models)

Slide # 15

INSTALLATION -

LEVELING

Left RearRight Rear

Slide # 16

From the Install Manual

Slide # 17

Inlet Water Pressure 20 –

120 psi

Must Fill in Less than 8 Minutes IE ERROR CODE

Slide # 18

The only time the damper is open is during the dry cycle. During the wash and rinse cycles the damper is closed building up and retaining heat for the dry cycle.

(The heater is not used during the dry cycle)Opening the door during the dry cycle will result in a warning beeping sound.

This is one of the 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 condensing drying systems.

Hybrid Drying System

The damper is closed during the wash

Slide # 19

Only one spray arm is used at a time and alternates every two minutes unless upper only is selected.

Motor starts at low speed and ramps up to speed to prevent pressure rising and causing leaks.

Because of alternating water spray between the Upper and Lower Spray Arms the water pressure allows superior performance and reduced consumption of water and electricity.

Vario

Spray System

Slim Direct Inverter motor is inverter-controlled. Speed is controlled based on cycle selection. It also allows high efficiency to minimize energy loss.

Brushless Direct Drive DC Motor

Slide # 20

Slide # 21

Slide # 22

Note: Pre Wash drains caused by Turbidity Sensor are partial drains

Slide # 23

Normal Cycle Operation, no options selectedDisplay: Function: Temperature: Wattage:2HR Drain/Fill 90 Degrees 321:57 Heat 91 Degrees 12361:50 Wash 102 Degrees 711:10 Drain 98 Degrees 321:08 Fill 88 Degrees 81:07 Dispense detergent 88 Degrees 12521:06 Wash/Heat 90 Degrees 1240 36 Wash 142 Degrees 7233 Drain 140 Degrees 3331 Dry fan/ open damper 122 Degrees 12

Note; Each fill 1.4 gallonsNote; Damper closed during wash and rinseNote; Damper opens and dry fan energized in dry cycle

Slide # 24

Slide # 25

RD1BL4

BL3

WH3

RD3

NA3

NA8

RD6

Con 6

Con 101 Con 102

Con 103

Slide # 26

Con 6RD1 Motor

WH3 L1& Neutral

RD3 Heater

NA3 Hall Sensor

BL4 Dispenser, Fan, Heater Sw

RD6 Flow meter, turbidity sensor, Thermistor

Float Sw, Vario

Sw,NA8

BL3 Drain pump & inlet valve

Notes; Con 6 Regulated power to Power button, to test Flow sensor and Turbidity sensor use connectors NA8 & RD6

Cycle PCB Con 101

DisplayCon 102

Option PCB Con 103

Slide # 27

Con 6

RD6

NA8NA8

NA4WH3: L1 & Neutral

Regulated Power Test Step 1: Disconnect & Reconnect Con WH3/ 120Vac BK to RD/LED Off at Con6, Press Power Button/0Vac BK to RD LED on! Note: OHM check Power Button Sw

from BK to YL/ Switch Normally Closed/ Press Power Button & Sw

Opens! Disconnect Con6 to OHM to Test.

Regulated Power Test Step 2: With Red LED on, Test for 5Vdc & 12Vdc at these points: Reference pin for each Voltage Test Con NA8 Pin 1 5Vdc-Con RD6 Pins 2&4/NA8 Pins 3&7: 12Vdc-Con NA4 Pin1

Slide # 28

Slide # 29

Con WH 3 Line voltage from noise filter to PCB, Black & White wires. When voltage is present at WH3 it should also be at Con 6. If not replace PCB.

Con 6

Con WH3: L1 & Neutral

Slide # 30

Cycle Board Con 101

Display Board Con 102

Option Board Con 103

Pin 1 WH

Cycle Board 5VDC between Pin 1, 9 &10 after pressing power buttonDisplay Board 5VDC between Pin 1 & 2 thru 10 after pressing power buttonOption Board 5VDC between Pin 1 & 6,7,8,9 after pressing power button.

Slide # 31

Cycle board accepts inputs from consumer to select cycles and communicates with Main PCB. This board also displays time of cycle and uses LEDs

to indicate which part of the cycle it is in.The 3 wire harness on right receives power from Con 6 on the main PCB for the power button to power up the Dishwasher.

Slide # 32

Overfill SW, NO,120VAC, BK-GY

Water Fill SW, 5VDC, NC, BN-YL

Water fill switch creates DE Error for slow drain.

Overfill switch creates FE error and turns on the drain pump.

Slide # 33

Slide # 34

Drain Pump 20 to 40 OHM -

120VAC

Constant 120Vac to Float SW

Constant Neutral to Pump

Failure to pump out will create DE Error Code (also check drain system)

Slide # 35

L1

Neutral

Power Supply

WH/ neutral at drain pump constant BK/L1 at overfill switch constant.

Overfill SW

Slide # 36

CHECK VALVE

Drain Pump discharge connection.

Slide # 37

Turbine Turbine

Determines

Fill Amount

If Turbine does not turn If Turbine does not turn within 30 seconds of within 30 seconds of beginning of water fill IE beginning of water fill IE Error is created.Error is created.

Hall Hall SensorSensor

Slide # 38

Wash Motor -

DC Variable Speed Internal Hall Sensor BLDC 3 Phase; E1 Error Code created when water leaks or siphons out causing motor to over speed due to no load on motor. (Sensed by Hall Sensor)

Slide # 39

WASH MOTOR

WH –

BL 8 –

20 Ω

WH –

SB 8 –

20 Ω

SB –

BL 8 -

20 Ω

Con RD1

Slide # 40

Wash Pump Motor and Hall Sensor

LE Error Created when motor fails to rotate, or by a broken wire, sensed by Hall Sensor.

Slide # 41

NA4

Slide # 42

VARIO MOTOR & SWITCH

120 VAC RED – Neutral / YL – L1RD –

SB 5VDC

2750 Ohm

Slide # 43

CON8

Slide # 44

Sump Heater 1200 Watts@120Vac/12 OHMS/10 Amps

HE Error created if water fails to heat or

if water temp is over 190 degrees.

Slide # 45

NTC Sump Thermistor

RD/BL

tE

Error created for open or shorted Thermistor

(or broken wire)

Slide # 46

Temp Resistance Voltage DC

85°F (29°C) 9.5KΏ 2.50

95°F (35°C) 7.68KΏ 2.10

100°F (38°C) 6.77KΏ 2.05

105°F (41°C) 6.13KΏ 1.95

110°F (43°C) 5.22KΏ 1.85

115°F (46°C) 4.84KΏ 1.73

120°F (49°C) 4.49KΏ 1.62

125°F (52°C) 4.08KΏ 1.52

130°F (54°C) 3.73KΏ 1.41

135°F (57°C) 3.42KΏ 1.32

140°F (60°C) 3.19KΏ 1.25

145°F (63°C) 2.86KΏ 1.16

150°F (65°C) 2.65KΏ 1.07

155°F (68°C) 2.42KΏ 1.00

160°F (71°C) 2.2KΏ 0.93

165°F (74°C) 2.05KΏ 0.87

Dishwasher Temperature/ Voltage/ Resistance Chart

Slide # 47

Turbidity (Soil) Sensor:Senses Clarity of water

Spray will be intensified with ‘Dirty’

water

Can Add Rinses (Max 3) or Decrease cycle time

Can be tested in ‘Test Mode’Lower soil levels uses 10.5 Qt for normal cycle, highest soil levels 27.5 Qt for normal cycle.

Slide # 48

Testing –

Test Mode / See Tech Sheet1) Press: POWER, Upper Only & Delay Start at the same time!2) Press: Delay Start / 1 time3) View Display window: Soil level will be displayed numericallyNote: IF “0”

only is displayed check for loose connections on Main PWB CON RD6 and on Turbidity (Soil) Sensor

Turbidity Sensor

Slide # 49

Slide # 50

Slide # 51

Clean LED

Slide # 52

Slide # 53

BN (N)

Heater Switch Door Switch

Switches are all Neutral

Heater Sw

Door Sw

RD (N)

Slide # 54

VENT Wax MOTOR 110-130 Ω

Damper Wax Motor 1250-1400 Ω

120 VAC GY-L1

RD-

(N)

Slide # 55

Damper, Fan Motor AssemblyDamper is spring loaded closed and opened only in the Dry Cycle by a 120Vac Wax motor, at the same time 120Vac is supplied to the Fan Motor

Slide # 56

Slide # 57

Drain Hose

Slide # 58

NEW

OLD

REFER TO SERVICE BULLETINS

Slide # 59

Spray armPops off

Disassembly

Slide # 60

Disassembly

Remove Screw and retainer clip.

Depress tab

Water Guide

Slide # 61

DisassemblyUpper Spray Arm

Slide # 62

Preliminary

Remove the 2 screws and sump holder clips. Be careful not to let the sump assembly fall into the tub.

Press the hooks gently toward the center of the sump assembly and lower the sump assembly into the tub while supporting it with one hand.

Slide # 63

Sump Assembly Removal

Remove the wiring

connections, including the

ground wires attached by screws.

Remove the hose

connections.

Part No. AJH31248606

News Letter April 2011 LG Tech Assist Sub’s to AJH31248604

Slide # 64

Remove 8 Phillips screws Center 2 screws (Lower Spray Arm joint) DOES NOT need to be removed

Slide # 65

Impeller, screw LH threads

Vario

Valve

Drain pump

Turbidity sensor

Slide # 66

Chopper (Up)

For whistling noise order new chopper blade Part# 5832DD4001A

Slide # 67

To enter test mode press Upper Only + Time Delay + Power simultaneously.

Display Test

Component Test

Use Time Delay Button to advance

Remarks

See Test 1See Test 2See Test 3See Test 4See Test 5See Test 6See Test 7

See Test 8See Test 8

See Tests on Component Test Sheet

Slide # 68

Component Testing & Error Codes

Slide # 69

Vario

Motor TestEnter Test mode: Activate Vario

Motor test if motor fails to rotate in either direction 2 beeps will be heard and test mode can not be advanced.

Check for obstruction of Vario

valve and 120vac to Vario

Motor. Switch senses direction by a 5vdc circuit this is what creates error.

Vario

ValveRD to SB 5VDC

120 VAC

Slide # 70

ERROR CODES

Slide # 71

Slide # 72

Slide # 73

Slide # 74

Slide # 75

Slide # 76

Slide # 77

Slide # 78

Slide # 79

Slide # 80

Slide # 81

Slide # 82

Slide # 83

Slide # 84

Slide # 85

SB IDSW201000146

Slide # 86

Dishwasher

Slide # 87

Dishwasher

Slide # 88

Dishwasher

Slide # 89

Dishwasher

Slide # 90

See Appendix 1, A, and B

Slide # 91

Slide # 92

SB –

IDSW20100126

Slide # 93

SB –

IDSW20100126

Slide # 94

SB –

IDSW20100126

Slide # 95

Slide # 96

Install O-ring Correctly

Check position of clip

Slide # 97

Slide # 98

Slide # 99

IDSW20070069

Slide # 100

Slide # 101


WT5101HVA/HWA$1099/$9995.0 cu.ft. Ultra Large Capacity WasherAvailable Colors : Graphite Steel (V) , White (W)

NEW FEATURES :

ColdWash™Option: “Cold water savings with warm water performance.”

LG’s unique ColdWash™ feature saves 60% on energy by providing the cleaning performance of hot water even when using cold water.

WaveForce™ Technology: LG’s WaveForce™Wash System is gentle on fabrics

while providing enhanced washing performance.

SmartRinse™ Jet Spray System : LG’s SmartRinse™ Jet Spray System provides better

rinsing performance with better water efficiency.

SlamProof™ Lid:LG’s SlamProof™ lid on the new high efficiency top

load washer offers a safe, convenient, and quiet washer lid.

Sanitary Cycle:NSF‐certified Sanitary Cycle removes even the

toughest stains and bacteria.

WT5101 Only

WT5001** & WT5101**


Model Number

Located on Console Rear Panel


Tech Sheet (Wiring Diagram)

Remove Rear Console Panel

This is the WIRING DIAGRAM ONLY



Specifications

Approx. 24 Gallons per Max.

Fill 23.3 Frequency 33 Display


Power

Press Power + Wash/ Rinse Temp + Soil Level ; you will see

t1 on the

display.

Press Start/pause until you see t5 on the display.

•t5 = weighing/distributing

•t7 = motion (if there is an LG towel inside, see demo movement)

•t8 = Shows RPM ramping to 1100 (add a 0). Tip: add a balloon with

an LG towel to show “powerful yet gentle.”

How to DEMO WaveForce™

Technology

Operation Key How to

Power + Wash/ Rinse Temp + soil Level




HIDDEN FEATURE

PRESS SOIL LEVEL & CUSTOM = RPMs


HIDDEN FEATURE

PRESS Delay Wash & Spin Speed = Water Level Frequency


HIDDEN FEATURE

PRESS Delay Wash & Soil Level = Water Temperature °C


Program Chart WT5001

12 Cycles with multiple

Options


Program Chart WT5101

14 Cycles with multiple

Options


Installation

No Shipping Bolts


InstallationCaution:

Never Install or Store in Freezing Temperatures

Plug Power Cord into PROPERLY GROUNDED OUTLET

Maximum Inlet Water Temp -

160ºF

Water Pressure 14.5 –

116 PSI

Early Versions used Rear Self Leveling Legs

NOTE: NO Anti Siphon Device

Maximum Drain Height is 96”

(8 ft.) above the bottom of the washing machine! (Owners Manual Page 11)






160ºF


116 PSI

Newer Versions use Manually Adjustable Rear Legs









160ºF


116 PSI




Drain Specifications 1) 35”

to 47”

from the floor 2) Insert no more than 8”

to 12”

of drain hose into stand pipe!


Owner’s Manual

Info WT5001

Note:

The WT5001 does not have:

1)

Sanitary Cycle

2)

Delicates Cycle

3)

Extra Hot Water Temp

4)

1200 Watt heater & bimetal


Owner’s Manual

Info WT5101

Note:

The WT5101 does have:

1)

Sanitary Cycle

2)

Delicates Cycle

3)

Extra Hot Water Temp

4)

1200 Watt heater & bimetal


Owner’s Manual

Info

NOTE: Hot & Cold solenoids energized for Fabric Softener


Owner’s Manual

Info


Owner’s Manual

Info


Owner’s Manual

Info WT5001


Owner’s Manual

Info WT5101


Water Temperature Info LG Tech Assist

http://lgtechassist.com/kb/index.php?View=news&EntryID=9

Sign On to LG Tech Assist and enter this address:


Owner’s Manual

Info


Owner’s Manual

Info

*WATER PLUS allows the customer to raise the water level to their

desired level!


Owner’s Manual

Info

CUSTOM PROGRAM allows the customer to

store their favorite cycle with options. Use this or recommend this when the customer cannot

correctly select cycles & options to meet their

washing needs.


Removing Console Rear Access Panel

3 Short Phillips Screws

2 Longer Phillips Screws


Popping the TOP

Insert Putty Knife between Top & Cabinet


Removing Lid Only

STRONGLY NOT RECOMMENDED UNLESS NECESSARY


Using putty knife Slide Pin to the Far Left

NOTE: Pin is Flat on two sides


When Pin is Depressed –

Lid can be Lifted from Right Hinge

NOTE: Flat sides must align


Rear Hinges

Do NOT

Depend on Hinges to Support TOP


Removing the Top

Disconnect All Component Connectors

Now the TOP can be Totally Lifted OFF

Disconnect Osillator

Air

Hose from Tub


No Lint Filter


Dispensers

JET SPRAY


Main Water Inlet (Detergent & Softener)



Dispensers

BLEACH -

Front Left

Water is added near end of Wash Cycle

Bleach Inlet Water Solenoid BL –

GY 10 VDC


Removing Basket Removing TUB RING

REMOVE

8

Phillips Screws


Removing Basket

Carefully PRY OFF Pulsator

Cap



Removing PULSATOR

#3 Phillips OR 10mm


Removing Basket

DO NOT REMOVE 12 10mm nuts & bolts


Removing BasketAfter Removing Pulsator

–

Remove 38mm Nut-

Extremely Tight




Removing Basket

Suggestions: 38mm or 1 1/2”

Deep Socket is recommended

Extremely Tight initially -

Impact Gun was used

Care must be taken not to mar top of mechanism shaft


Removing Basket

38mm Nut



COMPONENTS Noise Filter

BK –

L1

WH -

Neutral

NS –

Non Serviceable Fuse


COMPONENTS Main PWB WT5101


COMPONENTS Main PWB WT5001


COMPONENTS Water Valve Solenoids

BLEACHSOFTJETCOLDHOT


COMPONENTS Water Valve Solenoids

BL –

OR 5VDC

Hot

BL –

BN 5 VDC

Jet Spray

BL –

YL 5 VDC

Cold

BL –

BK 5 VDC

Softener

BL –

GY 10VDC

Bleach

All Solenoids 32Ω


COMPONENTS Osillator

OR –

PR Frequency (Hz)

26.9 Empty ---

23.3 Full

TEST MODE Display 69 --

33

SB –

OR 2.9 VDC

SB –

VL 2.9 VDC

OR –

VL 23Ω


COMPONENTS Oscillator

EMPTYCOTTONS

FREQUENCY KHz


SB –

OR 2.8 VDC SB –

V 2.8 VDC

Oscillator

Voltages


COMPONENTS

Magnet

Lid Switch


COMPONENTS Lid Switch


COMPONENTS Lid Switch

Ohm Testing the Lid Switch

Lock Plunger

Door Magnet


COMPONENTS Drain Pump

BL –

GY 120 VAC BL –

GY 10 -

15 Ω


Drain Pump

Replacement Part Assembly



IF Water Level Reaches 241

dr will FlashDrain Pump will Energize until 261 is reached (268 is Empty)

When Washer is ‘OFF’

(plugged into Voltage)

This will also occur IF POWER PAD is Pressed “ON”

with water in Tub. After 4 Minutes dr will appear.NOTE: 0 Watts are noticed on Meter in ‘OFF’

until PCB LED illuminates then 3 Watts are seen

26.10


LED on Main PCBWasher ‘OFF’

Water Level reaches 241

dr illuminates

Drain Pump Energized until water level 261 is reached

IF NO MORE WATER FILLS dr will turn off

dr Feature


COMPONENTS OverFill

Sensor

Dry 1.4 VDC

20K Frequency

Full 1.0 VDC

9K Frequency

This Sensor is ALMOST transparent. NO ERROR CODE will appear if failed. During FILL if water is sensed, the tub will stop rotating. If sensed in WAVEFORCE the RPMs

will decrease to reduce splashing or leaking.

Operation change will not be noticed –

no complaints.


COMPONENTS Tub Heater

1200 Watts@ 120VAC

12Ω

10 Amps@ 120VAC

WT5101 ONLY!!


Loosen 10mm Center Nut

Remove 3 8mm Screws

Note: Must be installed Properly

Removing Tub Heater

WT5101 ONLY!!


COMPONENTS

Cut Out (Opens): 203ºF

Cut In (Closes): 85ºF

TUB HEATER LIMITER

WT5101 ONLY!!


COMPONENTS Thermistor

Inside Tub

4.1 VDC 53ºF

NTC: Temp↑

Resistance↓

Temp ↑

Voltage ↓



COMPONENTS Rotor

24 mm

Service Note: A Gear Puller maybe required to pull the Rotor from the mechanisms’

splined shaft following the 24mm nut removal! DO NOT STRIKE THE THREADED SHAFT WITH A HAMMER OR MALLET!


COMPONENTS Rotor

Gear PullerModified Gear Puller Tips to fit in the Rotor Slots!


These Gears will mate to Lock & Spin


COMPONENTS STATOR5 -

15Ω

RD-BL, BL-YL, YL -

RD


COMPONENTS Hall Sensor


Coupling MotorCOMPONENTS

BL –

WH 120 VAC (2.1K –

2.3KΩ)BR = Signal


COMPONENTS Coupling Motor

BL –

WH 120 VAC energizes Motor –

Motor

Rotates until BR (Signal) –

BL sees 120 VAC

or 0 VAC

Locked to Unlock = 0 VAC

(BL –

BR)

Unlock to Locked = 120 VAC

(BL –

BR)

LOCKED = Coupling DOWN –

Basket & Pulsator

engaged

UNLOCKED = Coupling UP –

ONLY Pulsator

engaged


COMPONENTS Coupling

Default Position is ‘Down’

-

Both Basket & Pulsator

are Engaged

In ‘UP’

Position -

ONLY Pulsator

is Activated

NOTE: Coupling is part of the Mechanism or

CAN be ordered/replaced separately

Coupling Assy. Part No: 4323EA2001C


Coupling in the ‘DOWN’

Position –

BOTH Pulsator

& Basket Engaged


Coupling in ‘UP’

position

ONLY the Pulsator

Engaged


COMPONENTS Removing/Replacing Mechanism

From the Bottom

Remove Plastic Shield

NOW

Do Not Try to Remove Mechanism without removing Plastic Shield



From the Bottom

Remove Tub Heater Plate


COMPONENTS

Remove 15 10mm Bolts

Removing/Replacing Mechanism

From the Bottom



After Removing All Bolts –

Mechanism can be removed Downward



Basket Seal

New Mechanism has a NEW BASKET SEAL

on top mounted from the Factory


IMPORTANT NOTE:

Be sure to remove ‘old’

Basket Seal Before installing New Mechanism

If Reassembled with TWO Basket Seals – Basket will Rub TUB RING

Immediate Rubbing Sound during Operation


Marred by shallow socket

‘OLD’

Basket Seal


Internal View of the Mechanism

Note: There are no internal serviceable

parts!


COMPONENTS Reinstalling Mechanism

Align Mechanism with Locater Pins


COMPONENTS Reinstalling Shield

Realign Tub Heater Plate with Locater Pins


Power

Press Power + Wash/ Rinse Temp + Soil Level ; you will see

t1 on the

display.

Press Start/pause until you see t5 on the display.

•t5 = weighing/distributing

•t7 = motion (if there is an LG towel inside, see demo movement)

•t8 = Shows RPM ramping to 1100 (add a 0). Tip: add a balloon with

an LG towel to show “powerful yet gentle.”

How to DEMO WaveForce™

Technology

Operation Key How to

Power + Wash/ Rinse Temp + soil Level


WAVE FORCE


WAVE FORCE


SPIN WASH


SPIN WASH


SPIN


TEST MODE

WT5101 ONLY!


dr Feature





K400 Heater K420 Bracket K410 Thermo

WT5101 ONLY!

Temperature Conversion

French Door Twist Tray Icemaker

L1 (M

ain

PWB

)

BL PK SB

1 32 CO

N2

L1 (P

ilot V

alve

)L1

(IM

Val

ve)

B V W

Relays

12345678910

GY PK SB PR BN YL BL WH BO BO

CO

N1

Icemaker PWB (PCB) Assembly

12345678

BK RD BO YL BK WHRD BL

CO

N4

123456789

RD YL BN BKBLWH WH WH

CO

N5

Icem

aker

On/

Off

Switc

h

IR L

ED H

eate

r

Icem

aker

Tra

y Te

mp

Sens

or

IM S

top

Switc

h

M

Icemaker Motor 12 VDC17Ω to 25Ω

Hall IC

12BO YL

12WH BL

PWB Assy IR LED

PWB Assy Photo TR

Phot

o TR

Hea

ter

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

GY/RD RD BN SB PK BK WH/

RD BO BLBO/ BL PR PR/

WH GY YL/BK

GY/WH

RD/YL

BN/WH YL WH

YL/BL

BL/WH

WH/BK

Display PWB AssemblyRD

6

5

4

YL/BL

WH/BK

BO/WH

3

BO 2

WH/RD

1

CON101

CON102

1 2 3

WH SBBO

4

PK

CON103

Ice

Leve

r S

witc

h

Cap

Duc

t H

eate

r

CON1016 – 12 VDC Output5 – GND4 – 12 VDC Input3 – GND2 – TX (Var. VDC)1 – RX (Var. VDC)

1 (+)2 (-)

WH/RD

BL/ WH

Dispenser Lamp PWB

12 VDC

Wat

er L

ever

Switc

h

M NO T UG H I J K L

12V

12V 5V

GND 5V

From

Sm

all

Con

nect

or L

eft

Doo

r Hin

ge

GND

GND

SIG

SIG5V 5V 5V

LFX31925 Display & Icemaker PWB Diagram

CON102Pins 1 to 3 IM Supply

12VDC

Flow Meter Signals Pulsing 5VDC(Water Flowing Only!)

Pins 15 to 19 IM Flow – 95 HzPins 17 to 19 Disp. Flow – 185Hz

SwitchesCON 102 Pins 24 to 26 – 5 VDC Open / 0 ClosedCON 103 Pins 1 to 2 – 5 VDC Open / 0 Closed

Cap Duct HeaterCON 103 Pins 3 to 4 – 12 VDC / .5 Watts @ 285Ω

CON102 Pins 8, 10, 12, 14, 20 & 22 / 5VDC Outputs(See Dispenser PWB Diagram CON1 Letter

Legend J, K, L, Y, N & T)

5V

Wiring Color LegendBK – Black BL – Blue BN – Brown BO – Bright Orange GN – GreenGY – Gray PK – PK PR – Purple RD – RedSB – Sky Blue WH – White YL - Yellow

12VDC Water Pipe Heater / .8 Watts @ 178Ω

BO/WH

Y

5V

Pin 2 12V5V

GNDAuger Mtr FWDAuger Mtr REV

Water ValvePilot Valve

Not UsedNot UsedD/M FWDD/M REVW/P SIG

Pin 26 W/P GND

BL/RD

Display PWB CON102

EVEN ODD

12V Pin 1GNDR/D StateI/M TestI/M State 1I/M State 2I/M State 3I/M FlowDisp FlowF/Meter GNDF/Meter VCCDisp. Lamp 12VGND Pin 25

5V

Print Vs. 08.08.11

Main Power Board & Compressor

3

5

1

4

6

2

10

12

8

7

9

11

13

14

15

16

17

18

19

20

21

22

24

23

RD

BL

YBK

PK

W/R

GYW

WBK

OBL

BK

PR

BO

GY

WH

BLW

BN

PRW

SB

GY

1

2

3

4

5

6

7

8

9

10

1112

RD

BL

BO

YL

1

2WH

BK

CON1

CON3

CON2

CON5

CON7

Main PW

B A

ssembly

Pilot Valve120 VAC

360 to 420 Ohms

Rly 3

Rly 7

Rly 4

RD

Ref. Defrost Heater160 Watts @120 VAC

80 to 90 Ohms1.3 Amps

Thermal Fuse Opens @77°C / 171°F

BL (N)

10A / 250 VAC

BL (N)

BL (N)

BL (N)

BK (L1)

WH (N)

Grd.

Power Cord

(N)

Chassis Ground

PR RD

Large Connector Left Door Hinge

Auger Motor Capacitor 14 mfd @ 240 VAC /

Located on rear of cabinet next to Main PWB Assy.

Dispenser PWB Assy. CON2 Pins 5 & 6

Large Left Door Connector ChartB – Dispenser PWB CON 2 Pin 8A – Dispenser PWB CON2 Pin 2V – IM PWB CON2 Pin 2 PKBN – L1 to Pillar HeaterBO – Dispenser PWB CON2 Pin 6GY – Dispenser PWB CON2 Pin 5

Pantry Stepping Motor23 to 25 / 300Ω ± 10%24 to 26 / 300Ω ± 10%

(Both Stators +/- DCmv @ 25Hz in Test Mode)

5V

5V

5V

Ice Room FanG to V – 9.8 VDCG to F – 2.6 VDC

5V

G

Room Temperature Sensor(Right Door Hinge)

75°F = 11.42KΩ @ 1.48 VDC

G

5V

G

F

V

XC

To Small Connector on Left Door Hinge

Wiring Color LegendBK – Black BL – Blue BLW – BL/WH BN – Brown BO – Bright OrangeGN – Green GY – Gray GYW – GY/WH OBL – BO/BL PK – PinkPR – Purple PRW – PR/WH RD – Red SB – Sky Blue WH – WhiteW/R – White Red WBK – WH/BK YL – Yellow YBK – YL/BK

Flow MeterM – Pulsing 5 VDC when water flowingO – GNDU – 5 VDC (VCC)RD to BK 4 to 30Ω

Refrigerator Door Switches (2)Ref. Door Monitor GY to GY

5 VDC Door Closed / 0 VDC Door Open

C to X – 12 VDC to Ref. LED’s / Door Open

Frz. Door Monitor 5VDC Door Closed / 0 VDC Door OpenE to F – 12 VDC to Freezer

LED’s / Door Open

G

Flow Meter

UOM

RD

BK

WH

1

2

3

4

5

6

7

PK

BL

GN/Y

RD

BL (N)

BN

BL (N)

V

B

RDRD

BN

PK (L1)

BO

GY

PK (L1)

BO

GY

Pillar Heater7 Watts @120 VAC

2040 Ohms

AGN/YL

BNRD

Freezer Defrost Heater300 Watts @120 VAC

40 to 50 Ohms2.5 Amps

Thermal Fuse Opens @72°C / 162°F

IC11

Small Connector Left Door Hinge

WH/BK

WH/RDBO

RD

From Main PWB CON5 Pins 2, 4, 6 & 8

U, O & MFrom the Flow Meter

To Display PWB Assy. CON101 Pins 1, 2, 3 & 4

U, O & MTo Display PWB Assy.

CON102 Pins 21, 19 & 17.

WH/BKBO

WH/RD

RD

Z

WH

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

22

RD

HSNR

G

5V

5V

G

12V

12V

G

RX

G

5V

CON201

Linear Compressor

6 to 8 Ω

Capacitor18 mfd @ 450 VAC /Located on rear of

cabinet next to Main PWB Assy.

Compressor Op. Ranges20 VAC @ 2.6 KHz200 VAC @ 3.1 KHzOLP – Overload Protector

76

5

43

2

1BK

BN

BO

BL

OLP

2

4

6

8

10

3

5

1

7

9

11

13

12

14

16

18

15

17

19

20

21

22

23

GYR

SB

BK

PRW

BLR

BLW

GYW

Y/BK

W/R

W/R

R/Y

GY

BL

PR

PK

O/W

OBL

BNW

BNW

BN

YL

F

12V

A

G

A-

A

B-

B

G

5V

24

25

26

CON6

MWH

BOA-

B-B

Letter Legend A – BL - NeutralB – WH & PK - L1C – BLW - 12 VDCD – BK – GNDE – 12 VDCF – Freezer Door Switch to Freezer LEDs 12 VDCF – Motor FeedbackG – GND (Chassis Ground)M – GY/WH – Pulsing 5 VDC (Flow Signal)O – BN/WH – GNDU – YL – 5 VDC (VCC Constant Supply)V – Motor Volts DCV – Valve - 120 VAC to the Pilot Valve X – SB – 12 VDCZ – WH – L1 to Pilot Valve

Beta Duct Heater.5 Watts @ 12 VDC

275 to 300Ω

MG

12V

G

RD

H/F Box Motor 12 VDC

12V

RefrigeratorPantry Display

Pantry Switch

Meat

Produce

12VDC

GND

Pantry Sensor41°F = 24KΩ @ 2.4VDC

MG

V Refrigerator FanG to V – 13.6 VDCG to F – 2.5 VDC

12V

M

Freezer FanG to V – 12.8 VDCG to F – 2.5 VDC

5

1

2

63,4

3-Way Valve Stepping Motor 10 to 8, 6, 4 & 2 / 50Ω +/- 10%

( 4 Stators +/- 12VDC @ Varying Hz in Test Mode)

5V

BLW

W/R

BO

WBK

BN

BN

BL

BL

GY

GY

SB

BK

YL

WH

PK

Ice Room Temp. Sensor(Icemaker Compartment )0°F = 19.96KΩ @ 2.68 VDC

TX

C To Refrigerator Door Switches 12VDC to R LED’s

G

5V

Smart Buzzer Speaker

Hum

idity Sensor(H

SNR

)

12

31

32

4455

Smar

t

GVCC 5VHSNR

Smart Buzzer PWB & Humidity Sensor

Under Rte. Door Hinge Cover

EBR64730403

M

M Condenser FanG to V - 10.5VDCG to F – 2.5 VDC

Freezer Door Switch

FE

Fan Motors ON10 to 15 VDC

V to G2 to 4 VDC

G to FV – VDC G – GND

F - Feedback

Freezer Defrost Sensor-13°F = 99.3KΩ @ 3.95 VDC

Refrigerator Sensor37°F = 26.74KΩ @ 2.52VDC

Freezer Sensor0°F = 19KΩ @ 2.72 VDC

BN

BLW

WH

G

G

G

ED

12V

Refrigerator Defrost Sensor5°F = 60.13KΩ @ 3.5VDC

D – GND to R & F LED’sE - 12VDC to Ref. LED Module & 12 VDC to Freezer Door Switch

F

V

G

F

G

V

BK

RD

PR

RD

BK

PR

BK

RD

PR

BO BO

BLW YL

BLW SB

GY GY

M

YL

BN/WH

GY/WHO

U YL

BN/WH

GY/WH

M

O

U

From Main PWB CON5 Pins 11 & 12

To Ice Room Sensor above Twist Tray

Icemaker

BLBL

BL BL

SB

From Freezer Door Switch 12 VDC SBSB

To Left Door Freezer Light 12 VDC /

Bottom of Door SB

BO

2 BKH/F LED

1 RDX

D

2 BKPantry LED

1 RD

Refrigerator LED Modules(X) – Switched 12 VDC from Ref. Door Switches / LED Modules turns ON(D) – Ground (E) – 12 VDC Constant

3

2

RD

BK

R –Room LED

Module

1 BLX

E

D

3

2

WH

GY

Frz. Rte & Lft. Side LED Modules2 Total

1 YLF

D

Single Connector Left Door Hinge

WH BN From Dispenser PWB CON2 Pin 10 BN

To RD wire splice off CON3 Pin 4 Main PWB / Power the Pilot Valve

Z

Small Connector Right Door Hinge

PRBKBK – G from CON 7 Pin 7SB – 12 VDC from Freezer Door Switch terminal F

To Right Side Door Freezer LED Module – 12VDC

SB SB

BKRD

PR

EBR71326801 Senosr

Deli

Pantry Input Voltage:13 to 11 – 12VDC13 to 18 – 5VDCCommunication:To Test Selection Change / Open Ref Door & Press Select13 to 12 – 2.9VDC Produce13 to 14 – 2.9VDC Deli13 to 16 – 2.9 VDC Meat

3

2

WH

GY

Ref Rte & Lft. Side LED Modules2 Total

1 YLX

D

E

WH

RD

PK

WH

GY

YLBL

Print Vs. 08.08.11

LFX31925 Dispenser PWB Diagram

13 12 11 10 9 8 7 6 5 4 3 2 1

WH/RD

BL/WH WH RD/

YL BL BO SB

Dispenser PWB Assembly

CON21 2 3 4 5 6 7 8 9 10 11

WH PRBL BOSB

12

GY YL PK

CON1

BK

T N L K J HM

1 2 3

1 32

AG

YBK

WH

Cap

acito

r B B

W

IM V

alve

Auger Motor 120 VACBK to WH / 31 to 42ΩBK to GY / 31 to 42Ω

(N)

(L1)

(N)

BL (N)

Wat

er V

alve

RY2

RY1 (L1)

CN

C NO

CN

C NO

(L1)

IM Valve & Water Valve 120 VAC @ 360 to 420Ω

Auger Motor Capacitor /CON2 pins 5 & 6 is rated 14 mfd @ 240 VAC / Located on rear of cabinet next to Main PWB

Assy.

CON2 Letter LegendA – Pin 2 BL Neutral Input from CON2 Main PWB Pin 7B – Pin 8 PK L1 Input from CON2 Main PWB Pin 1B – Pin 7 YL L1 Output to IM CON2 Pin 1 BLW – L1 Input (BO wire) from IM CON2 Pin 3 SB Z - Pin 10 BN L1 Output to Pilot Valve

Cube

Crush

CON1 & CON3 Letter Legend(Voltages / Signals from Display PWB)

G – 12 VDC Input SupplyH – 5 VDC Input SupplyI – Ground ReferenceJ – 5 VDC Input for RY1 Aug Mtr CW CRUSHK – 5 VDC Input for RY2 Aug Mtr CCW CUBEL – 5 VDC Input for RY3 Water Dispenser ValveY - 5 VDC Input for RY4 Water Pilot Valve (Water Dispenser)T – Cap Duct Mtr CLOSE / 4.8 VDC InputN – Cap Duct Mtr OPEN / 4.8 VDC Input

12 VDC Cap Duct Motor / 10 to 12Ω (Polarity Reverses by

signal on T & N)

RY3

RY4

BN

Z

(L1)

BO/WH

Y

PR/WH RDBK

GI

Relay LegendRY1 – Crushed IceRY2 – Cube IceRY3 – Water Dispenser Valve Left Door RY4 – Pilot Valve

Wiring Color LegendBK – Black BL – Blue BN – Brown BO – Bright Orange GN – GreenGY – Gray PK – PK PR – Purple RD – RedSB – Sky Blue WH – White YL - Yellow

Print Vs. 08.08.11

6 RD6

1

1

2

2

3

3

4

4

5

5

6

6

7

7

8

8 NA8 (WH)

1

1

2

2

3

3

4

4

5

5

61

1

2

2

3

3

4

4

3

3

2

2

1

1RD1 NA4 (WH)

3

3

2

2

1

1 BL3

WH BL SB BK VT GY RD

7

7

6

6

5

5

4

4

3

3

2

2

1

1

Ha

Hb (-) (+)

Hall Sensor

Wash Pump Motor

12313 2

13 2

GY BK WH RD

Water Inlet Flow Meter

Turbidity Sensor

1 2

Thermistor(Sump)

BL

5 VD

C

GR

D

VTBL YL

GR

D

12 VD

C

21YL BL

Rinse Refill Float

4

4

3

3

2

2

1

1BL4

2

2

2

2

1

1

Heater

Relay

RD3

(N)(L1)

120 VACInput

COM

N.C.

N.O.

COM

N.O.

N.C.

FUSE

FUSE

GN/

YL Vario Motor

Inlet Valve

Drain Motor

SIG

COM

N.C.

N.O.

Vario Motor SW

Float SW Water Inlet

YL BN RD SB

4 VD

C

Motor / 310 VDC 3øDisconnect RD1 CON

Ohm Check WH to BL, WH to SB &

BL to SB 8 to 20 Ohms

Hall Sensor / NA4 CONRD – 10 to 15 VDCBK – GRDVT & GY – Speed Signals

Testing @ NA4 Connector1) RD to BK – 10 to 15 VDC2) BK to GY & BK to VT –Pulsing +/- 6 VDC @ 175 to 350 Hz

Ohm Check / Disconnect NA41) RD to VT – 8K to 10K Ohms2) RD to GY – 8K to 10K Ohms

Noise FilterWH (N)

BK (L1)

BK (L1)

WH

1

2

3

1

3

WH (N)

BK

BN (N)

BN (N)

OR(N)

OR(N)

BK(N)BK (N)

(L1) (L1)

Triacs

Triacs

Door Switches

Heater Switch Door Switch

OR

21 21

YL

YL(L1)

YL

RD(N)

RD RD

YL

YL

GY

GY(L1)

WH (N)

RD(N)

SIGSIG

(L1)

(L1)

BL GY

Door Monitor

BK (L1)

WH (N)

Chassis (GRD)

Flow MeterPin 1 – 5 VDC SupplyPin 2 – GRD Pin 3 – Signal Lead Pulsing 5 VDC @ 1 to 5 Hz (Water over the Inlet turbine)

Turbidity SensorPin 1 – 5 VDC SupplyPin 2 - .9 to 3.9 VDC to GRD / changes with soil level / water cloudinessPin 3 – 3.9 to 4.1 VDC to Sensor LED

NTC Sump Thermistor.5 to 4.5 VDC RD to BL

7KΩ to 8KΩ / 2.1VDC @ 95°F 2200Ω to 2300Ω / .935VDC @ 160°F

Dispenser

Wax M

otor

RD(N)

RD(N)

21

Vent Wax Motor

Vent Fan

1200W @

120 VA

C12 O

hms / 10 am

ps

GYRD

MAIN PWB

5 VD

C

5 VD

C

Wiring Color LegendBK – Black, BL – Blue, BN – Brown, GY – Gray, YL – Yellow,

OR – Orange, RD – Red, SB – Sky Blue, VT- Violet, WH - White

5 VD

C

120 VAC Components Vent Fan Motor - 110 to 130 OhmsVario Motor – 3800 to 4000 OhmsDrain Motor - 20 to 40 OhmsInlet Valve - 950 to 1300 OhmsDisp. Wax Motors - 1750 to 2000 OhmsVent Wax Motor – 1250 to 1400 Ohms

BL

RD

Float SW Water Inlet

COMN.C.

N.O.COM

N.C.

N.O.

BK

(L1)

Vario Switch PositionsClosed - Upper SprayOpen - Lower Spray

LDF6920 Dishwasher

3

3

3

3

1

1

BK (L1)

WH (N)

BN (N)

BN

Chassis (GRD)

1234

REGULATED POWER SUPPLY TEST Step 1: * Disconnect & Reconnect Dishwasher to Power /

120 VAC BK to RD / RD LED OFF @ CON6* Press POWER Button / 0 VAC BK to RD / RD LED ON!Note: Ohm check POWER Button Switch from BK to

YL / Switch is Normally Closed / Press Button & Switch OPENS! Disconnect CON6 to TEST!

1234B

K

RD

YL

BK

RDYL

Power Button N.C.

CO

N6

CO

N6

Display & Option PCBCNC

1 2 31 32

44

55

6 7 86 87

99

1010

1111

1 2 31 32

44

55

6 7 86 87

99

1010

1111

1 2 31 32

44

55

6 7 86 87

99

1010

1 2 31 32

44

55

6 7 86 87

99

1010

1 2 31 32

44

55

6 7 86 87

99

1010

1 2 31 32

44

55

6 7 86 87

99

1010

Cycle PCB

WH

WH

WH

WH

WH

WH

WH

WH

CON1CON2CON3

CON1CON2CON3

RD

WH

RD

WH3

Fuse (NS)

WH RD(Non Serviceable Fuse)

REGULATED POWER SUPPLY TEST Step 2: With RED LED ON, Test for 5 VDC & 12VDC at these test points:

Reference Pin for each Voltage Test CON NA8 Pin 1 VT5 VDC – CON’s RD6 Pins 2 BL & 4 WH / NA8 Pins 3 SB & 7 BN

12 VDC – CON NA4 Pin 1 RD

RD

Print Vs. 08.08.11

2 1

122 1

2 1

FUSE

FUSE

GN/

YL

1 2 31 32

NO

ISEFILTER

1 2 31 32

WH

RD

BK (L1)

WH (N)

GN

POWERCORD

120 VAC / 60 HZ

GN / YL

BK (L1)

WH

(N)

BK

(L1)

RD

(N) WH (N)

YL

Relays

WASHHTR 12Ω

1200 W @120 VAC

MAIN PWB

Motors 120 VACOhms Test

Drain Motor BL to GY 13Ω to 17ΩClutch Motor BL to WH 2.1KΩ to 2.4KΩ

1 2 31 32

44

55

6 76 7

BK

/WH

WT5001** & WT5101** Wiring Diagram

DISPLAY PWB

YL(L1)

BK

RD

(N)

1 2 3 4 5 6

Thermo Limiter

Pin 1 – BK – 9 to 12 VDC for unlock motor*Pin 2 – BN – 9 to 12 VDC for lock motor*Pin 3 - RD – 5 VDC from Main PWB to Door Lock Switch when Power Button Pressed Pin 4 – WH – (-) or GRD ReferencePin 5 – GN – 5 VDC when LID Open / 0 VDC LID ClosedPin 6 – BL – 5 VDC Lid Locked / 0 VDC Unlocked (when PTS button pressed)* Polarity on Pins 1 & 2 is reversed to lock & unlock door

Ohm Check BK to BN – Lock / Unlock Motor 35Ω to 40Ω

NOTESTest Mode

Press & Hold WASH/RINSE & SOIL LEVELPress POWERPress START / PAUSE to cycle thru tests

Component TestsVoltage Tests with connectors installed Ohm Tests with connectors removed

WH

3 Φ MOTOR

YL2

3 Φ Motor Ohm Tests5 to 15 Ohms

1 to 21 to 32 to 3

Hall Sensor Testing NA CONBN to YL 10 to 15 VDC

Ohm Test8KΩ to 10KΩ

BN to RDBN to BL

1 21 2

ATC NTC Sensor.5 to 4.5 VDCOhms Test

80KΩ to 90KΩ @ Room Temperature

1 2 3

1 32

4

4

5

5

6

6

1 2 3

1 32

4

4

5

5

66

1 2 31 32

44

1 2 31 32

1 2 31 32 6

1 2 3

1 32

4

4

5

5

6

WH5

BN

BK

RD

WH

(-)

GN BL

1 632 4 5

DOORLOCK

BK

BN

RD

WH

(-)

GN

BL

RD6

5 to 10 VDC INLET VALVES 25Ω to 35Ω

BLEACH

1 21 2

SOFTNER

1 21 2

COLD

1 21 2

JET SPRAY

1 21 2

1 21 2

BL

BLWH

WH

BL (-) BL (-)

HOTVALVE

RD

ORGY

BNYLBK

BL (-)

16 32 4 5

16 32 4 5

GY

BK

YLBL (-)

BN

OR

1 2 31 32

1 2 31 32

1 2 3123

BL BL

GY

GY

BL (N

)B

L(N)

BL(N

)

BL(N)

WH

WH

BN

BN

DRAIN PUMP

CLUTCH MOTOR

WH6

Pin 1 – GY – Switched L1 / Drain PumpPin 2 – Not usedPin 3 – BL – Neutral side of the 120 VACPin 4 – Not usedPin 5 – WH – Switched L1 / Clutch MotorPin 6 – BN – Signal Lead – 120 VAC signal from Clutch Motor to Main PWB when motor locks coupling (Spinning) or 0 VAC when motor unlocks coupling (Pulsing).

WH6

1 2

WH

BK

WH

YL4

1 21 2

Overflow Sensor

12 31 32

WH

PRESSURESENSOR

SB VOR

PS Voltage Tests2.5 to 3.0 VDC

SB to ORSB to V

26 KHZ to 23 KHZOhm Check20Ω to 25Ω

OR to V

1 2 31 32

U V W

1 2 31 32

BL RD

YL

YL3

BL

RD YL

WH

1 2 34 56

BL6

Ha

Hb (-) (+)

Hall Sensor

OR VYL

BN BL

RD

BN BL

RD YL

WH

WH

GY

WH

GY

WH – 5 VDCGY – (-) GRD

8181

2 3 4 5 6 72 3 4 5 6 7

7

CON2 CON1

Color / Abbreviations Legend

BK – Black BL – BlueBN – Brown GN - GreenGY – Gray YL - YellowNA – White RD - RedSB – Sky Blue V - VioletWH - WhiteGN/YL – Green w/ Yellow Tracer

120 VAC Input

Main PWB 120 VAC InputBK (L1) Lead on BK Relay to

WH (N) Lead on YL Relay

81 2 3 4 5 6 7

BK

/WH

12

34

56

Power Button C

ON

1

Display Board Power Button is a Normally Open (N.O.) Switch.

Test with Ohm meter leads from Pins 1 to 2

in CON1. Press Button and continuity

should be seen!

BK/WH

(Display Side of Display PWB)

Relay

Relay

(L1)(L1)

WH

WH

WH

1.4 VAC Dry – 1.0 VAC WetVariable Hz 8Khz to 20KhzDependent Upon Moisture

Concentration

(L1)

(N)

(N)(N)

(L1)YLBK

Neutral Relay

CON 2 Main PWB 5 VDC – Pin 1 to Pins 4, 6, & 7 / Regulated Power12 VDC – Pin 1 to Pin 5 / Power ON / RED LED ON 2 VDC – Pin 1 to Pin 2 / Power ON / 730Hz to 900Hz

Power SupplyControl / Display

LightingCON 1 Main PWB

2.5 VDC – Pin 1 to Pins 8, 5, & 4 1.8 VDC – Pin 1 to Pin 3 1.3 VDC – Pin 1 to Pin 2

M

WT5101 ONLY(NS)Fuse

(L1) – Line (N) – Neutral M – Motor VAC – Volts A/CVDC – Volts D/C Hz – FrequencyTH – Thermistor PS – Pressure SwitchF – Fahrenheit C – CelciusΦ – Phase V – VoltsCON – ConnectorNTC – Negative Temperature CoefficientPTS – Push To Start NS – Non ServiceableATC – Auto Temp Control

Print Vs 08.08.11

Fall 2011 Appliance Training

Documents

LG TRAINING PRESENTATION - Appliance Assistant