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auto cycle

auto cycle

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Thread: auto cycle

  1. #1
    Join Date
    May 2013
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    Default auto cycle

    Hello Jeff.

    Will a bad stat heater stop a Kenmore dryer 110.86477800 from advancing in the auto cycle?

    Also is it normal for the heat at the exhaust to exceed the rated cycle stat when empty and running? The stat is rated 155- 25.

    Thanks.

    P.S. Glad I remembered you addy and could find you and this forum.

  2. #2
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    Default

    Hi,

    Will a bad stat heater stop a Kenmore dryer 110.86477800 from advancing in the auto cycle?
    A weak safety thermostat ( on the heating element cage ) can cycle off too soon before the operating thermostat can cycle the heat off and effect the auto cycle. A bad operating thermostat ( on the fan blower housing ) not cycling or over heating can effect the auto cycle.

    Also is it normal for the heat at the exhaust to exceed the rated cycle stat when empty and running? The stat is rated 155- 25
    Yes, a 155?F stat will approx allow the heat to come up to 160-165?F and cycle the hat off, dryer cools and the heat will go below the stats temp and come back on....Kinda like heat on at 135 and heat off at 165.

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

  3. #3
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    Default

    Thanks for your reply. I'm thinking maybe the working stat heater is causing this thing not to advance. It does not show to have continuity. I assume it should show continuity at room temp?

    I can't remember ever seeing one like this one. It fits around the working stat.

    Also on the heater cage, there is a square like plastic box with a tube going somewhere. Another first for me.

  4. #4
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    Default

    Also on the heater cage, there is a square like plastic box with a tube going somewhere. Another first for me.
    #66?...

    auto cycle-00015161-00003-png

    ...Lint alert, suppose to worn the customer by making a noise if they didn't clean the lint filter....it is NLA.

    I'm thinking maybe the working stat heater is causing this thing not to advance. It does not show to have continuity. I assume it should show continuity at room temp?
    Heater was seperate on older dryers, newer ones the heater is built into the stat itself.....heater warms up the stat for different heat temps.

    auto cycle-cycling-thermostat-heater-61894-00882802-jpg Cycling thermostat pre-heater assembly

    Should have continuity but it will likely be very high and must have a good meter to read the ohms.

    Replacment thermostat...

    auto cycle-cycling-thermostat-694674-00870813-jpg Adjustable dryer cycling thermostat kit L135-155

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

  5. #5
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    Default

    So this heater would cause a no advance situation in auto, right? Supposed to fool the stat that temp has been reached and send power to timer, right?

  6. #6
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    So, I decided to chck another dryer I have. It does not advance in auto neither.

    If I am thinig right, the heaters are showing way too much resistance on both of thse dryers. The Whlpl diagram gives a reading of 5600-8400 ohms. My meter set on 20k shows 7.12. I have another used heater that reads 6.9 at 20,000.

    The heater on the old Kenmore gives readng on the meter of 3.5 at 20k. I do not have a complete diagram fo that heater so I do not now what it is speced at. I haven't found a resistor on either dryer. Maybe I need to look a little more in depth.
    Last edited by Boman; 05-04-2013 at 08:59 PM.

  7. #7
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    So this heater would cause a no advance situation in auto, right?
    Nope, not really....a bad heater wont give lower temps, just high only.

    The Whlpl diagram gives a reading of 5600-8400 ohms. My meter set on 20k shows 7.12.
    That should be close to a 7000 ohms reading then.

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

  8. #8
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    Default

    K, so the heater does not fool the stat into shutting off and sending power to the timer motor to advance?

  9. #9
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    Quote Originally Posted by Boman View Post
    K, so the heater does not fool the stat into shutting off and sending power to the timer motor to advance?
    The heaters job is not for the timer advancing, but it's job is to fool the thermostat into cycling faster for lower temps or different temps.

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

  10. #10
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    Default

    Am I correct in thinking not all dryers have resistors or moisture sensors in the auto circuit? That the auto cycle works off working and safety stats?

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