Samsung DV363EWBEUF/A1, DV363GWBEUF/A1, DV361EWBEWR, DV363, DV361 Technical Information

1

CLOTHES DRYER

Technical Information

CAUTION

All safety information must be follwed as provided in Service Manual of DV363, DV361.

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power to dryer
before servicing, unless testing requires power.

Code No. : DC68-02365J_EN

• 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 (DV363, DV361) for detailed installation, operating, testing,
troubleshooting, and disassembly instructions.

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2

ERROR ITEMS AND DIAGNOSTIC CODES

An occurrence of an Error will make a sound of error melody for 5sec and con tinuously show one
of the Error Displays from the following errors.

Error Display

Trigger Action Taken

LED LCD

tS
to
tE

The Termistor resistance is very
low or high.

Check for:

- Clogged lint screen.

- Restricted vent system.

- Check Thermistor resistance.

hE
HE

Invalid heating Temp in running
the dryer

Check for:

- Restricted vent system.

- Check Thermistor resistance.

do
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.

bE

bE2

Invalid state of key circuit short
for 30 secs(all models)
75 secs(DV339,DV338,DV448,D
V438,DV428)

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

9E

Electronic Control Problem
(Communication Error)

Check for:

- Check PCB and Wire harness.

- Replace PCB

od

Invalid Dry time in excess Dry
time

Check for:

- Sensor bar Open

- using Adjust time Up excessively

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.

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3

TEST MODE

Continuous Run Mode:

1. Press Signal + Dry Level for 3 sec during Power On State (Normal User Mode) .

2. Once in Continuous Run Mode, 7-Segment will toggle display “total cycle” and the remaining

time.

3. The previous cycle will restart during Continuous Run Mode until continuous run mode is
disabled.

4. During Continuous Run Mode, press Signal + Dryness Level for 3 seconds to return to normal
user mode. 7-segment will no long display “total cycle ” and only display the remaining time.

Cycle Count Mode

Denition of Cycle Count Mode:

- While in Service Mode pressing the Signal key will put the dryer into the cycle count mode

- Cycle number executed will display.

How to Enter:

- To enter Special Test Mode press While in Service Mode pressing the Signal key for 3 seconds

or until the control beep.

Special Test Mode

Denition of Special Test Mode:

- Dryer must be on before Service Mode can be entered.

- Press Signal and Temp Keys for 3 seconds, or until 3 beeps are heard.

- The machine will now be in Service Mode.

- Upon entry into Service Mode, the Sensor Bar Touch Data will be shown (Default Special Test

Mode).

How to Enter:

- To enter Special Test Mode press Signal and Temp Keys for 3 seconds for 3 seconds or until

the control beep.

Sensor Bar Touch Data Mode

Denition of Sensor Bar Touch Data Mode:

- With Power On pressing Signal and Temp Keys for 3 seconds

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

- Dryer will display Sensor Bar data. This mode is default mode of entering service mode

How to Enter:

- With Power On pressing Signal and Temp Keys for 3 seconds

ALIGNMENT AND ADJUSTMENTS

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before
servicing, unless testing requires power.

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4

Temperature Display Mode(in Celsius)

Denition of Temperature Display Mode:

- With power on, Press Sinal and Wrinkle Prevent keys simultanously for 3 seconds.

- This action will put the dryer into Touch Sensor Mode

- Under “Touch Sensor Mode”, Press Time and Wrinkle Prevent Keys at the same time.

- Then the dryer will display the temperature of drum inside in Celsius.

How to Enter:

- Under normal User Mode, Press “Signal and Wrinkle Prevent” Keys simultanously for 3 seconds

- Then press “Time and Wrinkle Prevent” keys at the same time.

• Converting °C  °F

Celsius(°C) -30 -10 10 30 50 70

F =9/5C + 32

Fahrenheit(°F) -22 14 50 86 122 158

Software Version Mode

Denition of Software Version Mode:

- While in Service Mode pressing the Temp key will put the dryer into the software version

mode

How to Enter:

- To enter Special Test Mode press Temp Key until the control beep.

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

System Check Mode

Special Test Mode:

- While in Power O, pressing the Dryness Level + Power keys simultaneously will put the dryer

into the System Check mode

- “ t2 “ will display.

- System Check Mode Progress t2 mode Function Performed Start/Pause

Motor(CW) Relay On  Heater Relay On  Heater Relay O  Motor(CW) Relay O
(Circulation)

ALIGNMENT AND ADJUSTMENTS

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before
servicing, unless testing requires power.

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5

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.

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No Problem What To Do

1 Will 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.

2

Motor runs/ tumbler
will not turn

• Belt o or broken/damaged.

• Idler tension spring too weak or stretched.

• Idler pulley jammed or stuck.

3

Runs 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.

4

Blows 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.

5

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.

6

Will 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.

7

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.

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7

No Problem What To Do

8

The 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)

9

Igniter 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

11

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.

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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 < 1Ω

- If resistance is innity, replace thermostat 3.



Thermostat 2 resistance < 1Ω

- 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 : open

Terminal : “COM” - “NC” (1-3) < 1Ω
Terminal : “COM” - “NO” (1-2) : ∞ Ω

2) Door switch push: On

Terminal : “COM” - “NC” (1-3) : ∞ Ω
Terminal : “COM” - “NO” (1-2) < 1Ω



Belt Cut-o S/W

- Lever open: Resistance value < 1Ω

- 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

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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

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Steam Models Only

TROUBLE SHOOTING

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before
servicing, unless testing requires power.

CN1

1. AC Power Port

2. AC Power Off Detection
Sensor

3. Door Detection Sensor

RY5

- Motor Relay Switch

RY6

- Heater Relay Switch

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 Thermostat - Disconnect harness and test
Blue wire Pin 2 to Red wire Pin 6.

Approx 10 KΩ at 25 °C/77 °F

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3-WIRE system connections

A. External ground connector
B. Neutral grounding wire (green/yellow)
C. Center silver-colored terminal block screw
D. Neutral wire (white or center wire)
E. ¾” (1.9 cm) UL-listed strain relief

1. Loosen or remove the center terminal block screw.

2. Connect the neutral wire (white or center wire) of the
power cord to the center, silver-colored terminal screw of the terminal block. Tighten
screw.

3. Connect the other wires to outer terminal block screws. Tighten screws.

4. Tighten the strain relief screws.

5. Insert the tab of the terminal block cover into your Dryer’s rear panel slot.
Secure the cover with a hold-down screw.

If converting from a 4-wire electrical system to a 3-wire, the ground strap must be
reconnected to the terminal block support to ground the Dryer frame to the neutral
conductor.

4-WIRE system connections

A. External ground connector
B. Green or bare copper wire of power cord
C. ¾” (1.9 cm) UL-listed strain relief
D. Center silver-colored terminal block screw
E. Neutral Grounding wire (green/yellow)
F. Neutral wire (white or center wire)

1. Remove the External ground connector screw.

2. Connect the ground wire (green or unwrapped) of the
power cord to the external ground connector screw. If you want to connect B(Green or
bare copper wire of power cord) to the Neutral Post without assembling with A(cabinet
ground), call the service technician.

3. Loosen or remove the center terminal block screw.

4. Connect the neutral wire (white or center wire) of the power cord and the appliance
ground wire (green with yellow stripes) under the central screw of the terminal block.

5. Connect the other wires to the outer terminal block screws. Tighten screws.

6. Tighten the strain relief screws.

7. Insert the tab of the terminal block cover into your Dryer’s rear panel slot.
Secure the cover with a hold-down screw.

TROUBLE SHOOTING

WARNING

To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before
servicing, unless testing requires power.

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