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12yr old Whirlpool Dryer element stays on ll time unless timer is OFF

12yr old Whirlpool Dryer element stays on ll time unless timer is OFF

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Thread: 12yr old Whirlpool Dryer element stays on ll time unless timer is OFF

  1. #1
    Join Date
    Mar 2013
    Posts
    4

    Default 12yr old Whirlpool Dryer element stays on ll time unless timer is OFF

    Replaced blown thermal cut off and blown thermal fuse. Checked continuity on operating thermostat and hi limit thermostat which were good. Checked ohm reading on element it was approx 10 ohms.
    Dryer timer was ON with door opened when line power was turn ON via breaker, HOWEVER, element started to glow, obviously this was with no drum turning and no airflow due to door open. Next I closed the door allowing the air to flow.
    With drum turning I checked amp draw with clamp on amp probe at one of the two element red leads and it was approx 27amps.
    I DID NOT check continuity from element to frame for short circuit since the ohms read correct previously.
    And if I remember correctly, when I checked voltage at element's two leads I got a reading of 124 volts, which I thought it should be 240ish....However, I don't remember at what point I checked this. Incoming power to dryer was 248 volts.
    I did not have a schematic of this exact dryer until returning home. My thoughts are that the motor switch is supplying power on L2 ALL the time, and as long as the timer is ON thereby completeing the L1 circuit, the element stays ON. The dryer is located out of town, so I want to have solution and parts on hand when returning. Suspect: motor switch. Your thoughts and experience is appreciated.

  2. #2
    Join Date
    Mar 2013
    Posts
    4

    Default

    Sorry no model number avail...but this is the typical WP dryer design of 20 plus yrs.

  3. #3
    Join Date
    Feb 2012
    Location
    Canada
    Posts
    2,330

    Default

    Hi,

    Dryer timer was ON with door opened when line power was turn ON via breaker, HOWEVER, element started to glow
    Definetly make sure the element is not shorted to ground!
    LINK> http://www.applianceaid.com/grounded...ric-dryers.php

    If not, then yes it would appear the motor heat switch is welded closed for what ever reason. Normally termianls 1&2 should be open when the motor is not running and closed when it is.

    jeff.
    http://www.applianceaid.com/
    Appliance Repair Aid

  4. #4
    Join Date
    Mar 2013
    Posts
    4

    Default

    Thanks Jeff...I will check for grounded out element. Where might I buy centrifugal motor switches for washers and dryers?
    I have a couple of 2 and 3 speed Whirlpool washer motors needing them too?

  5. #5
    Join Date
    Feb 2012
    Location
    Canada
    Posts
    2,330

    Default

    Most ( if not almost all ) cannot be replaced seperatly and only come with the motor. Odd washer motor switch is available seperate but most dryer motors the switch is no longer replacable = new motor.

    jeff.
    http://www.applianceaid.com/
    Appliance Repair Aid

  6. #6
    Join Date
    Mar 2013
    Posts
    4

    Default

    Ok thanks for the bad news on the dryer switch :-)...but which "odd" motor switch mis still,available?

  7. #7
    Join Date
    Feb 2012
    Location
    Canada
    Posts
    2,330

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