Samsung DV435ETGJRA/A1 Manual
1
CLOTHES DRYER
Technical Information
CAUTION
All safety information must be followed as provided in Service Manual of DV435*.
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to dryer
before servicing, unless testing requires power.
Code No. : DC68-02835E_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 (DV435*) 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 continuously show one
of the Error Displays from the following errors.
Error Display Trigger Action Taken
tE The Thermistor resistance is very low or
high.
Check for:
- Clogged lint screen.
- 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.
HE Invalid heating Temp in running the dryer Call customer service
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
Service Mode
How to enter:
- To enter Service Mode , press Wrinkle Prevent + Temp. Keys 3 seconds in normal mode until it
sends out a beeping sound.
- If pressing Wrinkle Prevent + Temp. Keys in Service mode , it will return Normal mode.
- Even though entering Service mode, the operating cycle will not be inuenced.
Touch Sensor Data Display Mode
Denition of Touch Sensor Data Display Mode:
- This mode is default mode of entering service mode.
How to enter:
- Once the unit enters service mode, the mode changes to touch sensor display mode.
- This action will put the dryer into sensor bar touch data mode
- Dryer will display Sensor Bar data.
Cycle Count Mode
Denition 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 loaded bell key in Service Mode.
Software Revision Mode
Denition 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.
Data Display Mode
How to Enter:
- If you press the time button in service mode, the mode changes to 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.
Denition 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.
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4
ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before
servicing, unless testing requires power.
Service Mode
How to exit :
- Press Wrinkle Prevent + Temp. Keys for 3 second again, or Power Key. If no key is operated
during Service Mode for 5 minutes, the machine will return to normal user mode.
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5
TROUBLE DIAGNOSIS
- As the micom dry machine is congured 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
dier 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
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 codedenition).
• 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.
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.
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.
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.
Technical_information-02835E_EN.indd 6 2012-05-16 �� 5:10:01
7
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
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 insucient spin out by washer.
12 Noisy and/Or
Vibration
• Thumping Check for loose tumbler bae, 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_information-02835E_EN.indd 7 2012-05-16 �� 5:10:02
8
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 innity, replace thermostat 3.
Thermostat 2 resistance < 1Ω
- If resistance is innity, replace thermostat 2.
Heater resistance 10 Ω
- If resistance is innity, 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 < 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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9
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 innite, replace Radiant sensor
Igniter(101D)
Resistance value 40~400 Ω
If resistance is innite, replace Igniter
Gas Valve(25M01A)
Valve 1-2 : Resistance value about 1365 Ω
Valve 1-3 : Resistance value about 560 Ω
Valve 4-5 : Resistance value about 1325 Ω
If resistance is innity, replace Valve
Thermostat (60T21 Hi-Limit)230F-50F
Resistance value < 1 Ω
If resistance is innity, replace Thermostat
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10
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 Thermistor1 - Disconnect harness and
test Blue wire Pin 3 to Red wire Pin 6.
Approx 10 KΩ at 25 °C / 77 °F
Cycling Thermistor2 - Disconnect harness and
test Yellow wire Pin 2 to White wire Pin 7.
Approx 238.231 KΩ at 25 °C / 77 °F
CN1
- AC Power Port
- Door Detection Sensor
- Motor Switch Check
RY7
- Heater1 Relay Switch
RY5
- Motor Relay Switch
RY6
- Heater2 Relay Switch
- ELEC model only
Technical_information-02835E_EN.indd 10 2012-05-16 �� 5:10:05
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