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Check dryer Terminal block prongs both outside prongs should give combined 220, and 110 each if u check 1 outside & 1 center (ground) prong. Also check house electrical outlet for full voltage.
CHECK THERMAL SHUT OFF THERMOSTAT USUALLY LOCATED ON THE BLOWER. for OHMS or resistance with a meter. Should show a closed circuit. Ohms WHEN THIS FUSE BLOWS IT WILL SHUT DOWN EVERYTHING.
NEXT Test the PUSH start switch with meter for OHMS. Should show OHMS when pushed in or on start, and no ohms or infinity when in off position.
If you hear a humming/clicking sound from motor area you more than likely have a bad motor.
Try this test out to see if u have weak windings or relay/capacitor on motor.
Open the dryer door and turn by hand the drum while machine is on ON position. And you or someone else presses the door engagement switch in. If it starts up then u have bad windings
Another thing to check is the belt safety switch. With a multi meter.
Especially if u just replaced the belt. The belt safety switch is attached to the Tensioner and motor. IT LOOKS LIKE A DOOR SWITCH SOMEWHAT a little black pc of plastic with 2 prongs going into it. Sits at bottom of motor. Under the Tensioner. Attach meter clips to the 2 prongs on switch, Then when the little white push button is pressed in it should show continuity and none when released.
Lastly check ur DOOR SWITCH for continuity with a meter when the button is pushed in the (on/Door closed position,) it may have gone bad.
Oct 14, 2011 - Uploaded by PartSelect
In this video you'll learn why your dryer might not be starting. ... If it makes noise but won't start trying spinning the drum empty ten times then close door and try it. ... I changed the door switch and still gives code AU. any suggestions .... thermal fuse everything seems good except my dryer won't come on!!!.
It could either be your motor capacitor which is the more common item, or the actual motor itself.
If you start the machine and can hear the motor running but no action, that is your drive belt. But if motor is struggling to turn it is your motor capacitor which basically kick starts the motor.
I am not familiar with the Samsung dryer as I have not seen them. Not sure if you are able to hold in the door switch with a screw driver and then start the machine. If so try this and turn the drum by hand. If this makes the dryer run after the initial jolt, then it is definitely your motor capacitor. Sometimes the capacitor is inbuilt into the main control board. Good luck. Ash
What is the model number for the samsung dryer? Usually when this happens there are small thermistors that act as safety devices in the dryer that will prevent the unit from running. For example there is a hi and low limit thermistor that if either will faulty the unit would not run at all the lights would come on but the unit would not run to prevent the unit from getting to hot. Message me back your model number and I will find your schematic showing the thermistors in your unit. You would have to check these thermistors with a multimeter and perform continutity tests on them to assure that they are functioning properly. I await your reply Thanks Rick