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Thread: 3 WIRE PILOTS

  1. #1
    Join Date
    Dec 2011
    Location
    Twin Cities Minnesota
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    237

    3 WIRE PILOTS

    These old systems always cause me "Brain Freeze". Anybody have any good trouble shooting info on them? Have one lites the pilot.,but not the burners.Will run that way for days! Thanks ahead!

  2. #2
    Join Date
    Aug 2009
    Location
    Beatrice, NE
    Posts
    2,054
    Ussually that is caused by a dirty pilot. The pilot flame doesn't get hot enough to cause the bi-metal strip in the pilot to warp. If a good cleaning doesn't do it, replace it.

  3. #3
    Join Date
    Dec 2002
    Location
    Houston,Tx.
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    15,934
    Quote Originally Posted by kls-ccc View Post
    Usually that is caused by a dirty pilot. The pilot flame doesn't get hot enough to cause the bi-metal strip in the pilot to warp. If a good cleaning doesn't do it, replace it.
    +1
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  4. #4
    Join Date
    Jul 2007
    Location
    Virginia
    Posts
    5,504
    Quote Originally Posted by Cosmicmuffin View Post
    These old systems always cause me "Brain Freeze". Anybody have any good trouble shooting info on them? Have one lites the pilot.,but not the burners.Will run that way for days! Thanks ahead!
    Agree with the others.

    If you want more info on how these pilots work, to help in troubleshooting, send me an email (address is in my profile).
    Instead of learning the tricks of the trade, learn the trade.

  5. #5
    Join Date
    Nov 2006
    Location
    Wisconsin
    Posts
    283
    Just had a dirty one saturday night. Cleaned her out, worked fine after that. If you need to replace it, go with oem. I got burnt once by non oem, never again.

  6. #6
    Join Date
    Jun 2007
    Location
    Greenwood Indiana (Indianapolis)
    Posts
    420
    Here is a helpful hint.

    After the pilot lights from the spark, unplug it and you can jump the yellow and white wire to test it. The gas valve should then open up. This is ONLY a TEST
    As iron sharpens iron so one man sharpens another Proverbs 27:17 NIV84

  7. #7
    Join Date
    Mar 2004
    Location
    SE Michigan
    Posts
    17,906
    For the next 60 seconds?
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  8. #8
    Join Date
    Dec 2011
    Location
    Twin Cities Minnesota
    Posts
    237
    Thanks guys.,brain thawed out.,went back cleaned pilot orfice ,now work'n fine!

  9. #9
    Join Date
    Dec 2007
    Posts
    4,696
    there is some good info on this site with links.

    I made a pilot/gas valve device to test each with help from this site.
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