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  1. #14
    Join Date
    Sep 2015
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    Ontari-ari-ari-o
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    Thread Starter
    Quote Originally Posted by rundawg View Post
    Check your email.
    Got it! Much appreciated.

  2. #15
    Join Date
    Oct 2009
    Location
    new jersey
    Posts
    390
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    Lennox board waits for the pressure switch to open on off cycle from tstat to shut off inducer.

  3. #16
    Join Date
    Jul 2007
    Location
    Virginia
    Posts
    9,999
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    Quote Originally Posted by dave sulz View Post
    Lennox board waits for the pressure switch to open on off cycle from tstat to shut off inducer.
    How does the pressure switch "OPEN" if the inducer is running?

    Most Lennox models I know of have a set 5-20 second post purge cycle, then the inducer is de-energized.
    Instead of learning the tricks of the trade, learn the trade.

  4. #17
    Join Date
    Jan 2004
    Location
    PA
    Posts
    76,246
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    WAG. It has a Nest or other power stealing thermostat connected to it.
    Contractor locator map

    How-to-apply-for-Professional

    How many times must one fix something before it is fixed?

  5. #18
    Join Date
    Sep 2015
    Location
    Ontari-ari-ari-o
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    Thread Starter
    Follow-up!

    Nothing was found. Thermostat was a basic digital stat using batteries, no fault codes on the board recorded at all, house was nice and toasty warm. Customer asked me to just replace the furnace I told him he was nuts but now he has it in his head that his furnace is a ticking time bomb ready to freeze his family to death at any minute. He paid me upfront so I wasn't going to try that hard to talk him out of it.

  6. #19
    Join Date
    Jul 2013
    Location
    Richmond, VA
    Posts
    4,327
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    Quote Originally Posted by Sooty View Post
    Follow-up!

    Nothing was found. Thermostat was a basic digital stat using batteries, no fault codes on the board recorded at all, house was nice and toasty warm. Customer asked me to just replace the furnace I told him he was nuts but now he has it in his head that his furnace is a ticking time bomb ready to freeze his family to death at any minute. He paid me upfront so I wasn't going to try that hard to talk him out of it.
    Now you need to take it home and figure out what was really going on with it!


    Sent from my iPhone using Tapatalk

  7. Likes BennyD liked this post
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