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Description 

Trigger 

Action Taken

Dryer Thermistor Short 
Sensed

The Thermistor resistance is 
very low.

Check for: Clogged lint screen,  
Restricted vent system, Thermistor 
resistance.

Dryer Thermistor Open 
Sensed

The Thermistor resistance is 
very high.

Check for: Clogged lint screen,  
Restricted vent system, Thermistor 
resistance.

do

Door Open

Running the dryer with door 
open

Check for: Loose or open wire 
terminals in Door Sense circuit.

FE

Power source frequency 
Error

Invalid power source Frequency  Check for: Non Utility power supply

dF

Door Circuit Failure

Invalid state for more than 256 
milliseconds

Check for: Loose or open wire 
terminals in Door Sense circuit.

hE or HE

Heater Error

Invalid heating Temp in running 
the dryer

Check for: Restricted vent system, 
Thermistor resistance.

bE

Button Error

PCB key closed for 75 sec.

Check Display PCB for stuck button

Samsung 'Dryer' Diagnostic Code Quick Guide

Display 

Fast Track Troubleshooting 

Publication #  tsDV407   Creation Date 1/22/2010

 

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. 

Models:    DV338***  
DV339***  DV407***  
DV409***  DV419***  
DV438***  DV448***

 

 

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