When I turn the Start switch the dry does not stay on. I replaced the switch and still have the same problem. When I bypass the switch the dryer works fine. Is the start switch used to trip a relay? If so, how can I get to it? I removed the switch trim but could find anything else to take apart.
When you turn your start switch it gives temporary power to the motor and then centrifugal switch in the motor kicks in and gives power to the motor until the timer stops it or the door is opened.Your motor centrifugal switch could be bad due to poor contact or heavy linting in and around the motor.Vacuum inside the dryer specially around the motor. If it doesn't fix it you have to buy a new motor, centrifugal switch cannot be bought separately.
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the push to turn switch usually just has two wires..if yours does then there should be no problem with bypassing it. check to see if the timer stops humming when you more the knob more into off...or let it advance by itself..Does the dryer turn itself into another cycle? or does it stay in off..? If it stays in off, but hums,,its not normal...if it advances by itself out of off its not normal and would need a new timer...this is sight unseen of coarse....
This problem is commonly caused by a blown thermal fuse located on the blower housing. The thermal fuse is wired in series with the motor and the motor activates a centrifugal switch for the heating element when it runs. These setup makes the dryer fail to start and the heating element not to turn on if the thermal fuse is blown. The dryer seems to no work at all. Verify the condition of the thermal fuse by bypassing it and starting the dryer.
Disconnect power then access and bypass the
thermal fuse on the blower housing. The blower housing is located on the rear left bottom of the dryer cabinet. Remove the rear panel to access the blower housing and so the thermal fuse.
the thermal fuse by disconnecting the wires and connecting them
together. Insulate them properly and plug the dryer back in. The thermal
fuse is indeed blown and needs to be replaced along with the cycling thermostat if the dryer starts. Do
not use the dryer with the thermal fuse bypassed due to fire hazards.
The thermal fuse and cycling thermostat are part numbers 3392519 and 3387134, respectively.
check the high limit/cycling switch thermostat located on the heat housing ,you will need to remove the front panel to access this,then, bypass the high-limit with a jumper wire and see if the flame stays on longer,if this doesn't help, then check the radiant senser on the tube also they get dirty,you can clean the senser eye or bypass this also and see if its weak,if not then replace the 2 gas coil valves on the gas valve body as these will get weak and shut off the gas supply
The instant you press the button on the console, the motor should start. When it starts a mechanism in the motor operates a switch mounted on the motor (provided w/new motor). That makes a circuit which replaces the action of your finger holding the button by creating a bypass circuit. This bypass circuit takes the start switch completely out of the circuit and keeps the motor running.
Your motor is not making this bypass circuit and needs to be replaced.
Remove back (many screws)
Clean lint from interior & Vent Chute
check for breakage & parts on dryer floor
check for burn damage (wires burned off or char)
if no burn or char:
could be the "Dryer Coil" itself broke or
a "Snap Disc" usually mounted on the coil housing.
Very Serious!!!! Replace only!!!! Do not ever bypass!!!!
Stay clear of dryer for test start
Be ready to shut it down fast in case of problems
Always replace back & vent chute
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
If it heats w/ the timer in off position whenever plugged in the the element is shorting to ground, its most likely due to either a broken coil or a cracked insulator. If heating w/ timer set for drying but motor is not running, the heat circuit thru the centrifugal/start switch on the motor is stuck closed.
This may be a thermal overload switch which is probably located underneath the top of the dryer. When you find it, bypass it to see if that is the problem. If so, replace it for about 10-12 dollars. Check the breakers first, then the connections in the back to see if they are secure.