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Reading wiring diagrams: How the Defrost Cycle works in a Danby refrigerator

Samurai Appliance Repair Man

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Brother Reg elegantly steps us through the circuit diagram for this one.

When the Defrost cycle starts (Timer Motor pauses),

the Neutral goes through the Defrost Heater, Defrost Thermostat, and Thermal Fuse to Line.

Whenever the Defrost Thermostat "opens",

the Neutral still goes through the Defrost Heater, but now travels through the Timer Motor

and "seeks" the Line through the Compressor.(and Overload).

Motor resumes, but since the Motor is of a "high" resistance, the Heater hardly heats anymore,

until the Timer completes it's "Defrost timing", and then it switches the Neutral back to itself and to the Compressor.

If any of those parts aren't working, the Motor may not run at the specific time.

gallery_4_4_1617.jpg

Source: Help Me Read This Wiring Diagram



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    • Samurai Appliance Repair Man
      Lab Night 3, High voltage machine
      Cool rig!  As for the difference in current draw between the probe the ladder, you were seeing the extra current draw in the ladder as the arc! The stepped up voltage created enough potential difference for the electrons to actually jump that gap (with a starter nudge from the probe). Once the probe introduced an arc, the arc itself established a current path for the electrons to jump the two legs of the ladder and they could keep flowing back and forth as the arc travelled up the ladder.   
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    • Samurai Appliance Repair Man
      Whirlpool Drain (or if Prince was an Appliantologist)
      An opus magnum Appliantological send-off for one of rock's magic-hands superstars! Fantastic, Brother Durham! 
    • DurhamAppliance
      Applyricology, Best of Durham Music Vol 1
      so Everybodys posting with the Samurai Everybody here is out of sight We dont bark and we dont bite We keep things loose, we keep things lite so Everybody's posting with the Samurai Posting with the Samurai Appliantology makes us smart and bright It's such a fine and useful site so Everybody's posting with the Samurai We like our fun and we never fight you cant post here and stay uptight Your stove won't heat? Check out this site so everybody's posting with the Samurai Posting with the Samurai Appliantology makes us smart and bright Your washer's broke? We'll make it right So Everybody's posting with the Samurai [time to pull out that air guitar and solo!] Everybody here is out of sight We dont bark and we dont bite Fridge too warm? So log on tonight where Everybody's posting with the Samurai Posting with the Samurai Appliantology makes us smart and bright It's such a fine and useful site so Everybody's posting with the Samurai [repeat last verse a few times, ad lib, moan a bit then fade]           We all want to grow our companies,  but finding and keeping either qualified techs or finding anyone that posseses even the slightest work ethic is a difficult,  near impossible task.  This song laments this sad state of affairs but also is a tribute to the recent passing of one of the greats.  Whirlpool Drain (or if Prince was an Appliantologist looking for good help)  Maybe you never meant to cause me any sorrow
      Maybe you never meant to cause me any pain
      I only wanted to one time see you working
      I only wanted to see you
      working on a Whirlpool Drain Whirlpool Drain, Whirlpool Drain
      Whirlpool Drain, Whirlpool Drain
      Whirlpool Drain, Whirlpool Drain 
      I only wanted to see you
      Steaming up a Whirlpool Drain  I never wanted to be a hard-assed employer
      But neither could I be some kind of friend
      Now please go away,  go work for another
      For your employment with me has end Whirlpool Drain, Whirlpool Drain
      Whirlpool Drain, Whirlpool Drain
      Whirlpool Drain, Whirlpool Drain
      I only wanted to see you
      Underneath a Whirlpool Drain Dude, I know, I know
      I know  appliances are changing
      It's time we all reach out
      to learn something new, that means you too You say you want me to teach you
      But you can't seem to make up your mind
      So I think you better pack it
      Since you can't even Ptrap a Whirlpool Drain Whirlpool Drain, Whirlpool Drain
      Whirlpool Drain, Whirlpool Drain
      Service Owners, if know what I'm singing about up here
      C'mon, raise your hand Whirlpool Drain, Whirlpool Drain
      I only want to have one
      Only want to see one
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      How Deep is Your Lint? or Dyer Fire ie Bee Gees as Appliantologists

      I believe that you
      Don't want your doors to be charcoal
      Or see the light from a fire in the darkest hour
      Nor want your house to fall
      And you may not think we care for you
      When you know down inside
      That we really do

      Then it's time for you to show
      How deep is your lint
      How deep is your lint
      You really need to know
      Because your dryer is a major tool
      That'll burn your house down
      When it should always be lint free
      If you love your family.

      How deep is your lint?
       
    • DurhamAppliance
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