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  1. #1
    Join Date
    Jan 2020
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    Gas pressure trip

    I have a Lennox EL296UN110XV60c-04 heater that trips the low pressure switch when cold outside. It will run normally in Warm weather. It trips off when outside air is below 30 degrees. Have blown out tubes and cleared drain lines. Flue pipe is clear. Not sure what to look for next

    Thanks David

  2. #2
    Join Date
    Jul 2019
    Location
    Oklahoma home its in the name
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    1,260
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    Does the drain line drain outside in such a way that it could freeze?

    Sent from mars using Tapatalk

  3. #3
    Join Date
    Aug 2002
    Location
    Southold, NY
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    Any pressure readings or your guessing?

  4. #4
    Join Date
    Jan 2010
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    ?

  5. #5
    Join Date
    Jan 2020
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    Thread Starter
    Quote Originally Posted by VTP99 View Post
    ?
    I do not have pressure readings. going by fault code on furance.

  6. #6
    Join Date
    Aug 2002
    Location
    Southold, NY
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    Quote Originally Posted by Dmorgan106 View Post
    I do not have pressure readings. going by fault code on furance.
    The switch is probably doing its job, Get a tech with the proper tools to diagnose the problem.

  7. #7
    Join Date
    Aug 2002
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    Southold, NY
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    Quote Originally Posted by Dmorgan106 View Post
    I do not have pressure readings. going by fault code on furance.
    Why?

    Your profile says your a contractor!

  8. #8
    Join Date
    Nov 2006
    Location
    Athens, Ohio
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    7,288
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    Quote Originally Posted by Dmorgan106 View Post
    Not sure what to look for next
    ,
    Thanks David
    A tech who measures stuff.

    Are you really a contractor?
    AOP Rules: Rules For Equipment Owners.

    Free online load calculator: http://www.loadcalc.net/


    There = not here. Their = possessive pronoun. They're = they are
    It's = contraction of it is. Its = the possessive form of it
    Too = also. To = expressing motion. Two = 2
    Then = after that, next. Than = indicates a comparison.
    Questions should end with a question mark "?" Statements end with a period "."

  9. #9
    Join Date
    Jan 2020
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    Thread Starter
    Did not have my magnehelic with me. The day I was there it would not trip off. outside air was 60 degrees.

  10. #10
    Join Date
    Aug 2002
    Location
    Southold, NY
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    Quote Originally Posted by Dmorgan106 View Post
    Did not have my magnehelic with me. The day I was there it would not trip off. outside air was 60 degrees.
    Let me guess then.
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