Samsung DV455EVGSGR/AA Manuel utilisateur
1
CLOTHES DRYER
Technical Information
CAUTION
All safety information must be followed as provided in Service Manual of DV457*, DV455*.
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to dryer
before servicing, unless testing requires power.
Code No. : DC68-02835D-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 (DV457*, DV455*) for detailed installation, operating, testing,
troubleshooting, and disassembly instructions.
Model: DV457* Model: DV455*
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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 Thermistor resistance is very low or
high.
Check for:
- Clogged lint screen.
- Restricted vent system.
- Check Thermistor resistance.
tE3
The resistance of the thermistor for the vent
blockage detection operation is very low or
very high.
Check for:
- Check the vent blockage detection
thermistor.
- Check the resistance of the thermistor.
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.
AE4 A Communication error between the WIFI
PBA and the MAIN PBA Call customer service
AE3 A Communication error between the DR
Modem and the MAIN PBA Call customer service
AE5 A Communication error between the LCD
PBA and the MAIN PBA Call customer service
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
* If "AE3" or "AE4" error occured, press the Start button then error will be cleared.
How to enter:
DV455*
- 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.
DV457*
- Method 1 : Select Title Option “1” on Course Selction Mode. Press Extras for 3 Seconds.
- Method 2 : Tap “2” three times Tap “3” two times Tap “2” once On the Progerss Mode.
Touch Sensor Data Display Mode
Denition of Touch Sensor Data Display Mode:
- This mode is default mode of entering service mode.
How to enter:
DV455*
- 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.
DV457*
- If the “6” button is pressed in service mode, the mode changes to touch sensor data display 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.
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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.
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:
DV455*
- Press the Mixed loaded bell key in Service Mode.
DV457*
- In service mode, press the “1” button
Software Revision Mode
Denition of Software Revision Mode:
- It is to retrieve its software version
How to enter:
DV455*
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.
DV457*
- If the unit enters service mode, the software version is displayed in the center top of the
display panel.
If you press the “2” button, the software version of the sensor board is displayed.
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ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before
servicing, unless testing requires power.
Data Display Mode
How to Enter:
DV455*
- 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
DV457*
- If you press the “5” button in service mode, the mode changes to data display mode.
- If you press the up arrow button, the display mode increases.
- If you press the down arrow button, the display mode decreases.
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
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6
ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before
servicing, unless testing requires power.
DR modem connection test
Check if the parts from the Main PBA to the DR modem are properly connected electronically.
DV457* Model Only
- If you press the “3” button in service mode, the DR wire test is performed.
- If the DR wire test is successful, SG is displayed. Otherwise, the AE3 error occurs.
Service Mode
* If "AE3" or "AE4" error occured, press the Start button then error will be cleared.
How to exit :
DV455*
- 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.
DV457*
- Tap Segment “4“ three times Tap Segment “1” two times Tap Segment “4” once On the Service
Mode. If no key is operated during Service Mode for 5 minutes, the machine will return to
normal user mode.
Segment 1
Segment 2
Segment 3
Segment 4
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ALIGNMENT AND ADJUSTMENTS
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to dryer before
servicing, unless testing requires power.
Connecting to a hidden AP (DV457*)
Proposed hidden AP specications
- The product can only connect to a hidden AP when it is in Shop Demo Mode.
- After the connection is established, even if the connection is disconnected because the product
is unplugged or the AP is turned o, the connection is automatically restored when the product
is plugged in again or the AP is turned on.
- AP name: The full name is displayed in the same way as an existing AP.
Enter Shop Demo Mode
(Tap 1 2 1 2 1)
The Hidden AP button appears in the
Network menu.
The connection information input screen
appears.
If an encryption method is selected, the
password input box appears.
Tap to move to the AP
name input screen.
Tap to move to the
password input screen.
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8
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.
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10
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-02835D-02_EN.indd 10 2012-04-26 �� 11:51:31
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7
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