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Re: Dryer On Switch
If you're really lucky it may be a broken or burnt off wire at the motor, but more likely you have a bad motor. When you push the start button you are energizing the start winding on the motor, but if there is no circuit through the run winding the motor will not continue to run when you release the button. Could be a bad run winding or the centrifugal switch is not resetting when the motor stops. Either way you are most likely looking at a new motor (expensive and usually a pain to install) or replacing the dryer. Sorry for the bad news. (remember good advice = fixya rating)
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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 ut push start button for continuity with a meter when pushed in the on position, it may have gone bad.
If I am not mistaken, once the timer is set and the button pushed, the motor should run and there is probably a contact in the cintrifugal switch of the motor to seal in the run circuit. On a working dryer, if you push the start button for a split second, and let go the dryer will stop. This is because the motor has not reached proper rpm and the switch is not made yet. If the switch hangs up or the switch goes bad the same symptom will occur.
The motor centrifugal switch is not switching from the start winding to the run winding. The switch should stay in the run winding when the motor picks up speed unless power to the motor is interrupted or cut off. The switch is replaceable on most dryer models but sometimes it is an integral or built-in part of the dryer motor and failure of the switch requires the replacement of the motor. Indicate the exact model number of the dryer for more accurate troubleshooting and repair advice.
some of them dryers have a switch other than the push button located behind the console. it also has an identical heat switch beside it. if that holding switch is bad it will not stay running. of the two identical switches the run switch is on the left. good kuck.
Sounds like the motor is gone. Try opening the door and pushing the door swithch inside the dryer door cavity.This may take two people but while holding the door switch, push the start switch and turn the dryer drum at the same time.(in a clock direction) If the dryer starts it means the moter is shot.
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
First verify 220 volts of power at the terminal block where the cord attaches to the dryer. Also, look for a burned or loose wire at this location.
The power to the start switch comes from the door switch.
Check the door switch for continuity.
If no continuity, replace the door switch.
NO POWER CAN BE A MULTITUDE OF PROBLEMS.
1 DOOR SWITCH 2. THERMAL FUSE. 3 MOTOR 4. TIMER
5. HOUSEHOLD VOLTAGE. 6. PUSH TO START SWITCH.
CHECK ITEMS IN THE ORDER LISTED.
THE DOOR SWITCH HAS AN ARM THAT EXTENDS DOWN INTO THE SPACE WHERE THE DOOR CLOSES. IT IS LOCATED IN THE UPPER RIGHT CORNER. PRESS IT WITH YOUR FINGER TO SEE IF IT CLICKS. THEN CLOSE THE DOOR AND SEE IF IT CLICKS WHEN THE DOOR SHUTS.
IF NO CLICK, REPLACE THE SWITCH.
THE THERMAL FUSE IS LOCATED BEHIND THE LOWER BACK PANEL OF THE DRYER DOWN BE THE EXHAUST. IT IS A SMALL WHITE ITEM WITH TWO WIRES ATTACHED.
JUMPER ACROSS THE TWO WIRES. PUSH THE START BUTTON. IF THE DRYER COMES ON, REPLACE THE THERMAL FUSE AND CHECK FOR PROPER OPERATING TEMPS.APPROX 160-175DEGREES FAHRENHEIT.
IF IT GOES BEYOND 220 DEGREES, REPLACE THE CYCLING THERMOSTAT LOCATED BESIDE THE THERMAL FUSE.
THE OTHER ITEMS SUGGESTED ARE MORE IN DEPTH AND REQUIRE A KNOWLEDGE OF READING SCHEMATICS.