Samsung DV438. - Manual (Page 6)

6
No Problem What To Do
 Will 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 codedefinition).
• Start/Pause rotary selector dial functional.
• Control Board operational.
• Belt off or broken and Belt Cut-off Switch operates.
• Drive motor functional.
• Check motor winding resistance: 2.88ohms between pin #3
and 4, 3.5ohms between pin #4 and 5.
2 Motor runs/ tumbler
will not turn
• Belt off or broken/damaged.
• Idler tension spring too weak or stretched.
• Idler pulley jammed or stuck.
3 Runs 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.
4 Blows 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 am-
perages 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.
6 Will 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 fire within 45 seconds at 120
VAC. The failure of a component in this system will usually be
indicated by one of three symptoms:
WARNING
To avoid risk of electrical shock, personal injury or death; disconnect power to dryer
before servicing, unless testing requires power.
TROUBLE SHOOTING
Technical_information-02365B.ind6 6 2008-06-25 ¿АИД 5:24:24