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Re: START AND RUN PROBLEM
Check the motor relay. there are 4 wires( 2 are pink and black) this goes to the coil of the relay and must show resistance(closed) you can also jump out the 2 blue wires and see it the unit keeps running. The part number for the relay is: FSP3405281 approx 40.00US
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First, check the door switch. Push and release it by hand and you should hear a click. If no sound, replace the door switch with this part. If the switch is ok, press the cancel button on the machine. Then do this. press and hold the start button for 2 seconds then release wait 2 seconds and press and hold again for 2 seconds continue this pattern until the dryer goes into test mode. You will see all the lights on the control light up. press each button on the control one at a time 3 times each. (Do not press the cancel button) until the dryer begins to run. When the dryer starts to run then press the cancel button. Then your machine should function properly.
What you describe is either a failed evenheat board or a failed motor relay.
Please post the complete model number from the machine and I can help you narrow it down. There should be a wiring diagram inside the console with voltage checks also.
That is a bad sign. If the buzzing starts when you press the start button and stops when you release its almost safe to say that the motor has a dead short or grounded out and causing that to happen. You can check the start switch by getting a multimeter and with the dryer unplugged take the wires off the switch, place a lead on each pin and press the start with meter set for continuity. If it shows continuity when presed and stops when released your motor is shot and needs to be replaced. Now if you press the start button and the machine starts to hum and continues to hum its possible that something has gotten caught in the blower wheel and binding the motor up. Depending on the make and model the location and access to it vaaries. If you can turn the drum and then the dryer starts you have a bad motor. The way the dryer works is when you initially push the start button, electricity is sent to the start winding, or stator, of the motor. This will in turn start the motor turning. From there the stator will drop out of the electrical process and at the same time the run winding, or rotor, will take over and the motor will continie to run. Your stator is damaged, has a burn spot, etc so by you turning the drum, the belt around the drum is moved which is attached to the motor pulley. You basically take the place of the stator. Long story short, you have a bad motor.
When you press the start button you complete a circuit bringing the juice into your dryer to run the motor the igniter or heating elements and what ever else goes whee when your dryer is drying. So if you press the button to complete the circuit then when you let go of the button it would stand to reason that it break that flow and shut it all down. However in a dryer there is something of a centrifugal switch that kicks in and keeps that circuit open and flowing with juice once the drum begins to turn and you let go of the button. That's why in a normal situation if you don't hold the button down long enough the dryer will cut right back off or if you open the door to the dryer to throw something in and close it before it quits turning it will stay running. Sounds like you could add this centrifugal switch to the list of possible culprits in this mystery. O7OUT
Anra, this is a classic symptom of a failed even heat board. I've seen a lot of these failures out there. Easy to change out. Check out this link. Catriver..post back http://www.repairclinic.com/0080.asp