5. SEQUENCE CHART OF PCB. Daewoo DWD-E6213, DWD-E1211W'S

5. SEQUENCE CHART OF PCB

1. SEQUENCE CHART

Cotton Synthetic

Heavy

Stain

Whites ECO-White

Process Time

Small Middle Small Middle Small Middle Small Middle

Pre.

Wash i n g

W a s h s e

R i n

Sensing

Water Supply

Pre. Wash

Drain

Balancing Spin

Mid.Spin

Sensing

Water Supply

Washing1

(Heating)

Washing 2

Drain

Balancing Spin

Mid.Spin

Water Supply

Rinse 1

Drain

Balancing Spin

Mid.Spin

Water Supply

Rinse 2

Drain

Balancing Spin

Mid.Spin

Water Supply

20sec

2min

10min

8min

1min

1min

3min

20sec

2min

90min

80min

35min

30min

25min

25min

20min

15min

1min

2min

3min

1min

1min

3min

2min

1min

3min

2min

3min

1min

1min

3min

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S p i n

Rinse 3

Drain

Balancing Spin

Main Spin

3min

1min

1min

7min

5min

3min

60sec Crease care

End

END

Remain Time Display

NOTE

10sec

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1:27 1:32 1:27

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1:55

1.Heavy Stain Course: Pre.Wash is Basic Default.

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2:22 2:32 1:37 1:52

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23

Wool Delicate Blanket Rapid

Process Time

Small Small Middle Middle

R i n s e

S p i n i n g

W a s h

Sensing

Water Supply

NOTE

"Wash 1

(Heating)"

Wash 2

Drain

Balancing Spin

Mid.Spin

Water Supply

Rinse 1

Drain

Balancing Spin

Mid.Spin

Water Supply

Rinse 2

Drain

Balancing Spin

Mid.Spin

Water Supply

Rinse 3

Drain

Balancing Spin

Mid.Spin

Crease care

D

R

Y

Dry

Cooling

END

Crease care

Crease care

End

END

Remain Time Display

3min

1min

1min

3min

2min

3min

1min

3min

2min

3min

1min

1min

3min

2min

20see

2min

60min

50min

35min

30min

15min

40min

20min

15min

1min

1min

1min

7min

5min

3min

60sec

15min

10min

5min

10sec

30min

60sec

10sec

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1:07

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1:10

1. In Rapid and Drum cleaning program, dry is default function.

2. This chart will be changed depend on market condition.

Drum cleaning

High

Memory

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2. Main function of PCB program

2-1. LOAD SENSING

1) Deciding the water level

1 Cotton, Whites, ECO-White course will be followed by this process.

2 Check the water level with dry laundry at the starting wash.

3 Check the water level by using motor output data during 20 sec, 65 rpm.

2) Deciding Spin Starting Step.

1 Check after finishing washing step with wet laundry.

2 Checking by using motor output data during 20 sec, 65 rpm.

3 The decided data is different depending on loading condition.

2-2. BALANCE SPIN

1) Motor running during balance spin.

1 Spreading the laundry : Rotating the same 45 rpm with left and right direction alternatively.

2 Attaching stop : Attaching the laundry to drum inside with constant speed.

3 Unbalance checking point : First step, check the U.B at 95 rpm, 160 rpm.

Second step, check the U.B at 95 rpm, 350 rpm.

Third step, at 300 rpm. if the unbalance data is over the criterion,

This process will be repeated.

4 Drain step : Drain at water around 160 rpm.

5 After drain, check the unbalance data again. This is so-called balance spin step.

2) Property of balance spin.

1 Conducting 10 times maximum.

2 If the washer can not pass balance spin step during 10 times, then water will be supplied.

3 If the washer can not pass 20 times of balance spin, UE error mode will be displayed on PCB.

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2-3. DOOR S/W

1) The working principle of Door S/W

1 Door Locking

Bimetal on ( 3 sec) --> solenoid (supply 20msec pulse 2 times)

2 Door Unlocking

Bimetal off --> solenoid (supply 20msec pulse, until unlock)

3 After door locking, all parts can work normally.

4 After pressing power button, if the temperature of wash thermistor is over 50°C or the water level is over the safety level, the door will be locked.

6 The door will be unlocked immediately after all processes are finished.

7 The door can be opened during processing if there is no problem to unlock.

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2) DOOR OPEN SYSTEM

1If add the laundry during washing, press the door unlock button.

2Door open sequence at abnormal condition.

start / hold door unlock button, 2sec.ON

water level is less than safety level?

YES

Temperature is less than 50°C?

YES

Display <LOCK> off

NO

NO drain fan motor on/ cold water supply

Door open

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2-4. Child Lock

1 Press the “TEMP”. and “DRY” button simultaneously during processing.

2 Under the Child Lock function, only power button is working.

3 During Child Lock function, CHL will be displayed on PCB.

4 In order to unlock Child Lock mode, press "TEMP" and "DRY" simultaneously.

2-5. The sequence of drain

1 If the checking time to reset point is below 1 min, the remaining drain time is 30 sec.

2 If the checking time to reset point is over 1 min, the remaining drain time is 2 min.

3 If the checking time to reset point is over 10 min, OE singal will be appeared on PCB.

4 If the temperature is over 50°C, the water will be supplied to high water level, then the drain will start.

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3. Convenience service functions(test mode)

1. Testing Mode

PCB and other electronic parts will be tested without water supply whether they are normal or not.

1) Process : press power button --> press "SPIN" button 3 times with pressing "WASH" button --> 'L d' will be shown on LED --

> Whenever pressing "TEMP" button 1 time, below process will be occurred.

L C (Lock Closed) --> F ( Fan Motor) ---> H (Hot V/V) --> C (Cold V/V) ->

P (prewashing V/V) -> d ( dry V/V) -> bb (bubble) -> dr (drain motor) ->

L O(Lock S/W Open)

2) More details

1When turn on 'LOCK' singal, all process is conducting normaly.

2When working starts, the PCB displys all the sensor conditions.

3In this case, BLDC Motor is not tested. In order to test it, select spin or rinse.

2. Continous testing mode

1) Process : after pressing "WASH", "RINSE", "SPIN" button simultaniously, press "POWER" button.

ALL LED On/Off 1 time --> L C (Lock Closed) ---> R (Motor right) --> L (Motor Left) --> F ( Fan Motor) ---> H

(Hot V/V) --> C (Cold V/V) --> b (pre-wash V/V)

--> d ( dry V/V) --> bb (bubble) --> h1 (HEATER WASH)--> h2(HEATER DRY) --> dr (DRAIN MOTOR On) --

>L O(Lock S/W Open)

2) More tails

1LED test can be done with all LED On.

2All sensor conditions will be shown on PCB during processing.

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4. ERROR DISPLAY

ERROR

SINGAL

IE

OE

UE

LE

E2

E3

E9

E5

E6

E7

E8

H1

H2

H3

H4

H6

H7

H8

PEF

ERROR CAUSE

WATER

INLET ERROR

DRAIN

ERROR 3 pressure switch disorder

4 PCB can not check water level

UNBALANCE ERROR 1 laundry unbalance

DOOR

1 door opened during processing

2 LOCK S/W broken

OPEN ERROR

1 inlet valve broken

2 drain motor working during water supply

3 pressure switch disorder

4 PCB can not check water level

1 drain motor out of order

2 inlet valve working during drain

Overflow

3 PCB can not check door lock

1 continuous water supply

2 drain motor can not work

FAN MOTOR disorder

3 pressure switch disorder

1 fan motor cannot work

2 PCB cannot control fan motor

SENSOR PRESSURE

1 abnormal water level

ERROR

HIGH VOLTAGE

ERROR

EMG ERROR

Direction Error

1 huge noise

2 spining with jamming clothes between gasket

3 PCB broken

1 huge noise

2 spining with jamming clothes between gasket

3 motor broken

4 PCB broken

1 move opposite direction

2 motor Hall IC broken motor disorder sensor temp. dry disorder

1 connector problem

2 abnormal loading condition

1 sensor temp broken

2 connector problem

1 sensor temp. of washing broken sensor temp.

wash disorder overheating dry heater

2 connector problem

1 fan motor cannot move

2 sensor temp. of dry broken overheating wash heater

1 heater working with no water supply

2 sensor temp. of wash broken abnormal of washing heater 1 washing heater cannot work abnormal of drying heater 1 dry heater cannot work abnormal of sensor temp. of washing

1 heater working with no water supply

Pump Filter 1 The drain filter is clogged.

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COUNTERPLAN

Change the Inlet-Valve

Change the Drain Motor

Change the Sensor Pressure

Change the PCB

Change the Drain Motor

Change the Inlet-Valve

Change the Sensor Pressure

Change the PCB rearrange the laundry

Clode the Door

Change the LOCK SW

Change the PCB

Change the Inlet-Valve

Change the Drain Motor

Change the Sensor Pressure

Change the Fan-Motor

The contact of the Connector or Change the PCB

Change the Sensor Pressure re-installation rearrange the laundry

Change the PCB re-installation rearrange the laundry

Change the Motor

Change the PCB check the connector and change

The contact of the Connector check the loading condition and change

Change the Sensor Temp.

The contact of the Connector

Change the Sensor Temp.

The contact of the Connector

Change the Fan Motor

Change the Sensor Temp.

check water level

Change the Sensor Temp.

Change the Heater Wash

Change the Heater Dry check the water level and washing heater

Clean the drain filter