Samsung DV455EVGSGR/AA User manual

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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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.
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 inuenced.
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
Denition 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
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:
DV455*
- Press the Mixed loaded bell key in Service Mode.
DV457*
- In service mode, press the “1” button
Software Revision Mode
Denition 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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5
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.
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
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.
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
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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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7
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 specications
- 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 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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9
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.
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 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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11
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 : 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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12
THERMISTOR
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 about 1365 Ω
Valve 1-3 : Resistance value about 560 Ω
Valve 4-5 : Resistance value about 1325 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
238.23Ω @ 25 °C 77
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13
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
RY6
- Heater2 Relay Switch
- ELEC model only
RY7
- Heater1 Relay Switch
RY5
- Motor Relay Switch
CN4
LCD connector (BEST only)
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14
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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15
WIRING DIAGRAM
DV457E*, DV455E*
DV457G*, DV455G*
WIRING DIAGRAM
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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NOTE
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1
SECADORA
Información técnica
PRECAUCIÓN
Toda la información de seguridad debe seguirse conforme al Manual de servicio de
DV457*, DV455*.
ADVERTENCIA
Para evitar riesgos de descarga eléctrica, lesiones o la muerte, desconecte el cable de alimentación
de la secadora a menos que la prueba del electrodoméstico requiera que este esté enchufado.
Nro. de código: DC68-02835D-02_MES
AVISDO DE SEGURIDAD IMPORTANTE – “Sólo para técnicos” Esta hoja de datos de servicio
está destinada a personas que tengan experiencia eléctrica, electrónica y mecánica, así como
conocimientos generales considerados aceptables en el servicio de reparación de aparatos.
Cualquier intento de hacer reparaciones importantes podría causar lesiones físicas o daños
materiales. Ni el fabricante ni el vendedor se hacen responsables, ni asumen ninguna obligación
legal por lesiones o daños de cualquier tipo derivados del uso de esta hoja de datos.
• Dada la posibilidad de sufrir lesiones físicas o daños materiales, comuníquese siempre con un
técnico autorizado para realizar el mantenimiento de esta unidad o repararla.
• Consulte el Manual de servicio (DV457*, DV455*) para obtener instrucciones detalladas de
instalación, funcionamiento, prueba, solución de problemas y desarmado de la unidad.
Modelo: DV457* Modelo: DV455*
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2
CÓDIGOS DE ERROR Y DE DIAGNÓSTICO
Cuando ocurre un error suena una melodía durante 5 segundos y en la pantalla se muestra uno de
los errores siguientes.
Error
mostrado Descripción Acción correctiva
tE La resistencia del termistor es muy baja o muy
alta.
Verique:
- Filtro para pelusas obstruido.
- Sistema de ventilación restringido.
- Verique la resistencia del termistor.
tE3
La resistencia del termistor para el funcionamiento
de la detección del bloqueo de la ventilación es
muy baja o muy alta.
Verique:
- Verique el termistor para la detección del
bloqueo de la ventilación.
- Verique la resistencia del termistor.
dE La secadora funciona con la puerta abierta
Verique:
- Cierre la puerta y ponga en marcha la
secadora.
- Aoje o abra los terminales de los cables del
circuito del sensor de la puerta.
dF La puerta no está bien cerrada
Verique:
- Aoje o abra los terminals de los cables del
circuito del sensor de la puerta.
bE2 Estado no válido de un circuito corto clave
durante 30 segundos
Verique:
- Circuito clave corto, o no, de la PCB de la
pantalla.
FE Frecuencia de fuente de alimentación no válida
Verique:
- No se utiliza frecuencia de fuente de
alimentación regular
- Circuito del sensor de frecuencia de
alimentación no válido
2E Problema con el control electrónico
(Falla de sobrevoltaje)
Verique:
- La PCB y el arnés de cables.
- La alimentación eléctrica.
AE Problema con el control electrónico
(Falla de comunicación)
Verique:
- La PCB y el arnés de cables.
- Reemplace la PCB.
Et Estado no válido de la comunicación Eeprom Verique:
- La PCB con circuito Eeprom.
AE4 Un error de comunicación entre la PBA Wi-Fi y la
PBA principal Comuníquese con el servicio al cliente
AE3 Un error de comunicación entre el módem DR y la
PBA principal Comuníquese con el servicio al cliente
AE5 Un error de comunicación entre la PBA LCD y la
PBA principal Comuníquese con el servicio al cliente
HE Temperatura de calentamiento no válida al poner
en funcionamiento la secadora Comuníquese con el servicio al cliente
ALINEACIÓN Y AJUSTES
Para evitar riesgos de descarga eléctrica, lesiones o la muerte, desconecte el cable de alimentación de
la secadora a menos que la prueba del electrodoméstico requiera que este esté enchufado.
ADVERTENCIA
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3
MODO DE PRUEBA
Modo de servicio
* Si se muestran los errores "AE3" o "AE4", pulse el botón Start (Inicio) para borrarlos.
Cómo ingresar:
DV455*
- Para ingresar al Modo de servicio, presione las teclas Wrinkle Prevent (Prevención de arrugas) + Temp (Temperatura) durante
3 segundos en el modo normal hasta que oiga un pitido.
- Si presiona las teclas Wrinkle Prevent (Prevención de arrugas) + Temp (Temperatura) en el Modo de servicio, la máquina
volverá al Modo normal.
- Aunque ingrese al Modo de servicio, esto no inuirá en el ciclo de funcionamiento.
DV457*
- Método 1: Seleccione la opción de título “1” en el modo de selección de programa.  Presione Extras (Extras) durante 3 segundos.
- Método 2: Toque “2” tres veces  Toque “3” dos veces  Toque “2” una vez en el modo de progreso.
Modo de visualización de datos del sensor táctil
Explicación del Modo de visualización de datos del sensor táctil:
- Es el modo predeterminado de ingreso al modo de servicio.
Cómo ingresar:
DV455*
- Cuando la unidad ingresa en el modo de servicio, éste cambia al modo de visualización del sensor táctil.
- Esta acción pone la secadora en el modo de datos táctiles de la barra del sensor
- La secadora mostrará los datos de la barra del sensor.
DV457*
- Si presiona el botón “6” en el modo de servicio, éste cambia al modo de visualización del sensor táctil.
ALINEACIÓN Y AJUSTES
Para evitar riesgos de descarga eléctrica, lesiones o la muerte, desconecte el cable de alimentación de
la secadora a menos que la prueba del electrodoméstico requiera que este esté enchufado.
ADVERTENCIA

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4
Modo de conteo de ciclos
Explicación del Modo de conteo de ciclos:
- Este modo muestra el número total de ciclos efectuados por el usuario.
Cómo ingresar:
DV455*
- Presione Mixed Load Bell (Timbre de carga mixta) en el modo de servicio.
DV457*
- En el modo de servicio, presione el botón “1”
Modo de revisión del software
Explicación del modo de revisión del software:
- Se usa para recuperar la versión del software.
Cómo ingresar:
DV455*
En el Modo de servicio presione Temp (Temperatura) hasta que oiga un pitido.
Por ejemplo, en el caso de “U1 05", U1 indica una versión principal “U1", 05 indica una versión
secundaria “05”.
- Si presiona la tecla Temp (Temperatura) en el Modo de versión del software, la máquina
volverá al Modo de servicio.
DV457*
- Cuando la unidad ingresa en el modo de servicio, la versión del software se muestra en el
parte superior central del panel de visualización.
Si presiona el botón “2”, se muestra la versión de software de la placa del sensor.
ALINEACIÓN Y AJUSTES
Para evitar riesgos de descarga eléctrica, lesiones o la muerte, desconecte el cable de alimentación de
la secadora a menos que la prueba del electrodoméstico requiera que este esté enchufado.
ADVERTENCIA
Technical_information-02835D-02_MES.indd 4 2012-04-27 �� 10:21:17