Samsung DV448, DV438, DV338 User Manual

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CLOTHES DRYER
Technical Information

CAUTION

All safety information must be followed as provided in Service Manual of
DV338, DV448, DV438.

WARNING

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

DC68-02365B-01_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 (DV338, DV448, DV438) for detailed installation, operating,
testing, troubleshooting, and disassembly instructions.

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WARNING

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

ALIGNMENT AND ADJUSTMENTS

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

The Thermistor
resistance is very low or

high.

Check for :

- Clogged lint screen

- Restricted vent system.

- Check Thermistor resistance.

tO

dO

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 state for more
than 256 milliseconds

Check for :

- Loose or open wire terminals
in Door

sense circuit.

bE

Invalid state of key
circuit short for 75secs

Check for :

- Display PCB key circuit short
or not

od

Invalid Dry time in
excess Dry time

Check for :

- Sensor bar Open

- Using Adjust time Up exces­sively

hE

Invalid heating Temp in
running the dryer

Check for :

- Restricted vent system.

- Check Thermistor resistance.

Et

Invalid state of Eeprom
communication

Check for :

- PCB on Eeprom circuit

FE

Invalid power source
Frequency

Check for :

- Not using regular power
source frequency

- Invalid power frequency sense
circuit

ERROR ITEMS AND DIAGNOSTIC CODES

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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.

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.

TEST MODE

Continuous Run Mode

WARNING

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

ALIGNMENT AND ADJUSTMENTS

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WARNING

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

ALIGNMENT AND ADJUSTMENTS

Sensor Bar Touch Data Mode

Denition of Sensor Bar Touch Data Mode:

- While in 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:

- While in Power off pressing Signal and Temp Keys for 3 seconds

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.

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 “U105”, U0 means major version “v1“ 05 means minor version “05”

System Check Mode

Special Test Mode:

- While in Power Off, 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 Off → Motor(CW) Relay Off (Circulation)

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