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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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Several different components could be preventing your dryer from continuing to run when the start button is released. The wiring diagram and other technical information for your dryer are shown in the image below. When the start (PTS or Push To Start) button is pushed, the PTS contact is closed and voltage is supplied to the drive motor. Start voltage is also sensed through the blue/black wire that is connected to the P1-5 Start Sense pin on the control board. When the control board senses the start voltage, it normally applies 48 volts DC voltage through the Pink/Black wire to the motor relay to hold the contact closed between the two blue wires attached to the motor relay that supplies normal run voltage to the drive motor. With the start button taped down, the motor continues to run since it gets voltage through the closed start button. Since the motor stops running when the start button is released, it indicates that you have one of these 3 failures:
Broken or disconnected Start Sense wire.
Failed electronic control board that is not sending the 48 volts DC voltage through the motor relay Failed motor relay. Wiring failure between the components.
Since the motor relay and the heater relay are both exactly the same part, you could unplug the dryer and switch the motor and heater relay to see if the dryer will stay running. If it does, then you just need to order and replace the bad relay.
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.
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.
Good day, Seems you've covered the timer and push to start switch. If so then.... The principle the system runs on is, if the timer is turned on, 2 wires come out of it to run the the motor. The first goes to the push to start switch and when pressed it sends power directly to the motor. The second wire goes to the motor, but thru a centrifugal switch that must be up to speed before it sends power to the motor. That is why it continues to run even when you release the start button. The centrifugal switch is a part of the motor. Either the centrifugal switch failed, or the power wire to it is disconnected or broken.
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