Samsung DV393ETPARA/A1 Manual

CLOTHES DRYER

Technical Information

CAUTION

All safety information must be followed as provided in Service Manual of DV405, DV395,

DV393, DV231, DV365.

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power to dryer

before servicing, unless testing requires power.

Code No. : DC68-02365H-02_EN

IMPORTANT SAFETY NOTICE – “For Technicians only” This service data sheet is intended for

use by persons having electrical, electronic, and mechanical experience and knowledge at a level

generally considered acceptable in the appliance repair trade. Any attempt to repair a major

appliance may result in personal injury and property damage. The manufacturer or seller cannot

be responsible, nor assume any liability for injury or damage of any kind arising from the use of

this data sheet.

• Duetopossibilityofpersonalinjuryorpropertydamage,alwayscontactanauthorized

technician for servicing or repair of this unit.

• RefertoServiceManual(DV405, DV395, DV393, DV231, DV365) for detailed installation,

operating, testing, troubleshooting, and disassembly instructions.

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ERROR ITEMS AND DIAGNOSTIC CODES

An occurrence of an Error will make a sound of error melody for 5sec and continuously show one

of the Error Displays from the following errors.

Error Display Trigger Action Taken

tE The Termistor resistance is

very low or high.

Check for:

- Clogged lint screen.

-Restrictedventsystem.

- Check Thermistor resistance.

HE Invalid heating Temp in

running the dryer

Check for:

-Restrictedventsystem.

- Check Thermistor resistance.

dE Runningthedryerwithdoor

open

Check for:

- Close the door, and run the dryer.

- Loose or open wire terminals in

Door Sense circuit.

dF Invalid door state for more

than 256 milliseconds

Check for:

- Loose or open wire terminals in

Door Sense circuit.

bE2 Invalid state of key circuit

short for 30 secs

Check for:

- Display PCB key circuit short or

not.

FE Invalid power source

Frequency

Check for:

- Not using regular power source

frequency

- Invalid power frequency sense

circuit

2E Electronic Control Problem

(OverVoltageError)

Check for:

- Check PCB and Wire harness.

- Check Power supply.

AE Electronic Control Problem

(CommunicationError)

Check for:

- Check PCB and Wire harness.

-ReplacePCB.

Et Invalid state of Eeprom

communication

Check for :

- PCB with Eeprom circuit.

ALIGNMENT AND ADJUSTMENTS

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before

servicing, unless testing requires power.

(Technical)DV405-02365H-02_EN.indd 2 2012-06-19 �� 1:25:53

TEST MODE

Service Mode (DV405, DV395, DV393 only)

How to enter:

- To enter Service Mode , press Mixed Load Bell + Temp. Keys 3 seconds in normal mode until it

sends out a beeping sound.

- If pressing Mixed Load Bell + Temp. Keys in Service mode , it will return Normal mode.

- Even though entering Service mode, the operating cycle will not be inuenced.

DR Ready Modem Wire Test(DV431AS* only)

How to enter:

-After entering Service Mode, press the Wrinkle Prevent button to start the Wire Test.

- During the test, “----” is displayed.

- If the test result is normal after the test, “SG” is displayed.

- If a problem occurs, the “AE3” error code is displayed.

Touch Sensor Data Display Mode

Denition of Touch Sensor Data Display Mode:

- This mode is default mode of entering service mode.

How to enter:

- WithPowerOnpressingMixedLoadBell+Temp(DV405,DV395, DV393) or Wrinkle Prevent +

Temp(DV231,DV365)for3seconds.

- This action will put the dryer into sensor bar touch data mode

- Dryer will display Sensor Bar data.

Cycle Count Mode

Denition of Cycle Count Mode:

- This mode is to bring up the total number of cycles that User have carried out.

How to enter:

- PresstheMixedLoadBell(DV405,DV395, DV393)orTime(DV231,DV365)keyinServiceMode.

Software Revision Mode

Denition of Software Revision Mode:

- It is to retrieve its software version

How to enter:

At Service Mode, press Temp until it sends out a beeping sound

ex) In case of “U1 05”, U1 means major version “U1”, 05 means minor version “05”.

- If press Temp key In Software Version Mode, it will return Service Mode.

ALIGNMENT AND ADJUSTMENTS

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before

servicing, unless testing requires power.

(Technical)DV405-02365H-02_EN.indd 3 2012-06-19 �� 1:25:53

Continuous Run Mode

How to enter:

- Press Mixed Load Bell +Dry Level(DV405, DV395, DV393) or Wrinkle Prevent + Time(DV231,

DV365)for7secduringPowerOnState(normalusermode).

- OnceinContinuousRunMode,display“cc”for1secandnishedcyclecountfor1secandthe

remaining time for 1 sec in turns.

- ThepreviouscyclewillrestartduringContinuousRunModeuntilthemodeisdeactivated.

- DuringContinuousRunMode,pressMixedLoadBell+DryLevel(DV405,DV395,DV393)or

WrinklePrevent+Time(DV231,DV365)for7secondstogobacktonormalusermode.

Data Display Mode (DV405,DV395, DV393 only)

How to Enter:

- WithPowerOn,pressAdjustUpKey+AdjsutDownKeyfor7secondsuntilitsendsouta

beeping sound .

- If not pressed any keys for 5 minutes, it will be set back from Data Display Mode

- If pressing AdjustUp Key in this mode, Display Mode will be incresed.

- If pressing AdjustDown Key in this mode, Display Mode will be decresed.

Denition of Data Display Mode:

- Display Mode 1 : Temperature data

- Display Mode 2 : Average Touch Sensor data for 1 minute

- Display Mode 3 : Average Temperature data for 1 minute

ALIGNMENT AND ADJUSTMENTS

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before

servicing, unless testing requires power.

Power On state

(Normal user mode)

Mixed Load Bell +Dry Level(DV405,DV395,DV393)

or Wrinkle Prevent +Time(DV231,DV365) 7 SEC

Continuous Run Mode

(Technical)DV405-02365H-02_EN.indd 4 2012-06-19 �� 1:25:53

TROUBLE DIAGNOSIS

- Asthemicomdrymachineisconguredofthecomplicatestructure,theremightbethe

service call.

Below information is prepared for exact trouble diagnosis and suitable repair guide.

Caution for the Repair and Replacement

1) As some electronic components are damaged by the charged static electricity from the resin

part of dryer or the human body, prepare the human body earth or remove the potential

dier ence of the human body and dryer by contacting the power supply plug when the work

contacting to PCB is executed.

2) As the P.C.B assembly is designed for no trouble, do not replace the P.C.B assembly by the

wrong diagnosis and follow the procedure of the trouble diagnosis when the micom is not

operated normally.

ALIGNMENT AND ADJUSTMENTS

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before

servicing, unless testing requires power.

Please follow below instruction for the trouble diagnosis and parts replacement.

(Technical)DV405-02365H-02_EN.indd 5 2012-06-19 �� 1:25:54

No Problem What To Do

1Will Not Start or Run

•All wires are hooked up to their corresponding terminals.

•Dryer is plugged in.

•Blown fuse or circuit breaker.

•Doorswitchfunctional...doorclosed.Checkforerrorcode3(See

Tableforcodedenition).

• Start/Pause rotary selector dial functional.

• Control Board operational.

• Belt o or broken and Belt Cut-o Switch operates.

• Drive motor functional.

• Check motor winding resistance: 2.88ohms between pin #3 and

4, 3.5ohms between pin #4 and 5.

2Motor runs/ tumbler

will not turn

• Belt o or broken/damaged.

• Idler tension spring too weak or stretched.

• Idler pulley jammed or stuck.

3Runs a few minutes

and then stops

• Lint buildup around drive motor.

• Low voltage present.

• Blower impeller blocked in blower housing.

• Drive motor - start switch contacts stuck closed.

4Blows fuses or trips

circuit breaker

- Is the belt connected well?

- Is the winding of the motor continuous?

(Rotorwinding,statorwinding,generator)

- Is the motor protector normal?

•If above points are not found, the PCB assembly is out of order.

Replaceit.

Blows fuses or trips

circuit breaker (Gas

Model)

•DuringignitionthedryerwilldrawXamps.WiththeburnerON,

the dryer will draw X amps. If the dryer is drawing amperages

above this, then the house wiring, fuse box or circuit breaker is

suspected to be at fault.

•Igniter harness loose and shorted to base.

•Incorrect wiring or wire shorted to ground.

•Drive motor winding shorting to ground.

6Will not heat (motor

runs)

Openheatingelement.

•Hi-Limit trips easily or is open.

•Regulatingthermostattripseasilyorisopen.

•Membrane switch open.

•Check Thermistor.

Will Not Dry Gas

Model Poor Gas

Ignition

When the dryer is operated on a heat setting, the igniter should be

energizedandburnershallrewithin45secondsat120VAC.The

failure of a component in this system will usually be indicated by one

of three symptoms:

TROUBLE SHOOTING

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before

servicing, unless testing requires power.

(Technical)DV405-02365H-02_EN.indd 6 2012-06-19 �� 1:25:54

No Problem What To Do

8The igniter does not

glow

If the igniter does not heat up, remove power and using an

ohmmeter, check the following:

•Openamesensor

•Openigniter

•Shorted booster coil

•Openwiring

•Badmotorswitch(Neutralsupply)

•Nopowerfromcontrol(L1supply)

9Igniter glows - No gas

ignition

If the igniter heats up but the main burner ame is not ignited,

remove power and using an ohmmeter, check the following:

•Opensecondarycoil

•Openholdingcoil

•Openwireharness

•Stuckamesensor(Stuckclosed)

10 The gas is ignited but

the ame goes out

If a normal ignition takes place and after a short while the ame goes

out, check for the following:

•Radiantsensorcontactsopeningprematurely.

•Weak gas valve coil may open when stressed by higher Temps.

•Weak Hi-Limit

•Poor venting

•Bad drum seals

Improper drying

clothes wrinkled

Rough texture long

dry time

•Lintlterisnotclean.

•Restrictioninexhaust.

•Outsideexhausthooddamperdoorstuckclosed.

•Exhaust too long, too many elbows, ex ductwork installed.

•Poor intake air available for the dryer.

•Incorrect tumbler speed. Tumbler belt slipping.

•

Blower impeller bound; check for foreign material in blower area.

•Customer overloading dryer.

•Check clothing labels for fabric content and cycle selected.

•Clothes too wet due to insucient spin out by washer.

12 Noisy and/Or

Vibration

•ThumpingCheckforloosetumblerbae,reartumblerroller(s)

worn or misaligned, out-of-round tumbler or high weld seam on

tumbler.

•Ticking Check for loose wire harness or object caught in blower

wheel area.

•Scraping Check for front or rear bulkhead felt seal out of

position or worn tumbler front bearings.

•RoaringCheckforblowerwheelrubbingonblowerhousingor

bad motor bearings.

•Popping or squealing sound. Check for a sticky or frayed belt.

TROUBLE SHOOTING

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before

servicing, unless testing requires power.

(Technical)DV405-02365H-02_EN.indd 7 2012-06-19 �� 1:25:54

TROUBLE SHOOTING

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before

servicing, unless testing requires power.

COMPONENT TESTING PROCEDURES

Component Electrical Testing (with ohmmeter)

Thermistor resistance 10K Ω @ 25°C 77°F

Thermostat 1 resistance < 1Ω



Thermostat 3 resistance < 1

-Ifresistanceisinnity,replacethermostat3.



Thermostat 2 resistance < 1

-Ifresistanceisinnity,replacethermostat2.

Heater resistance 10 Ω

-Ifresistanceisinnity,replaceHeater.



Measure resistance of the following terminal

1) Door switch : o

Terminal : “COM” - “NC” (1-3) < 1Ω

Terminal : “COM” - “NO” (1-2) : ∞ Ω

2) Doorswitch:On

Terminal : “COM” - “NC” (1-3) : ∞ Ω

Terminal : “COM” - “NO” (1-2) < 1Ω



Belt Cut-o S/W

-Leveropen:Resistancevalue<1

-Leverpush:Resistancevalue:∞Ω

Lampresistance80~100Ω(Violet&gray)

Motor(Electronic&GAS)

Contacts

= Contact closed

Centrifugal Switch (Motor)

2.88Ω between

Pin# 3 and 4

3.5Ω between

Pin# 4 and 5

Function 1M 2M 3M 5M 6M

Start

Run

Thermostat 3

160 °C, 25A

thermal cut-off

Thermostat 2 Heater

127/99 °C, 25A

Hi-limit 240V/5300W

(Technical)DV405-02365H-02_EN.indd 8 2012-06-19 �� 1:25:57

GAS MODEL

TROUBLE SHOOTING

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before

servicing, unless testing requires power.

Radiant Sensor(10RS)

Resistancevalue<1Ω

Ifresistanceisinnite,replaceRadiantsensor

Igniter(101D)

Resistancevalue40~400Ω

Ifresistanceisinnite,replaceIgniter

Gas Valve(25M01A)

Valve1-2:Resistancevalue1.2KΩ

Valve1-3:Resistancevalue0.5KΩ

Valve4-5:Resistancevalue1.2KΩ

Ifresistanceisinnity,replaceValve

Thermostat (60T21 Hi-Limit)230F-50F

Resistancevalue<1Ω

Ifresistanceisinnity,replaceThermostat

(Technical)DV405-02365H-02_EN.indd 9 2012-06-19 �� 1:25:58

TROUBLE SHOOTING

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before

servicing, unless testing requires power.

Sensor Bars & temperature sensor check

Sensor Bars - Disconnect harness and test Pink

wirePin4toOrangewirePin5.

Approx∞Ωwithoutlaundry

Approx190Ω±10%withwetclothes

Cycling Thermistor - Disconnect harness and test

BluewirePin3toRedwirePin6.

Approx10KΩat25°C/77°F

RY7

(Technical)DV405-02365H-02_EN.indd 10 2012-06-19 �� 1:26:05

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