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Thread: ON - OFF - ON ?

  1. #1
    Join Date
    Dec 2009
    Posts
    10

    ON - OFF - ON ?

    I have a trane heater that sometimes starts with just the blower, cold air, for 30 seconds or so, then off. next I hear the ignition and induction fan, then after 10 or so seconds normal operation with warm air. I just notice it maybe 1 out of 10 starts.

    What's with that false start?


    Looking at the last paperwork I have, the models numbers recorded are:
    TUD120R960K5, 2TIB3060A1000AA, (not very clear handwriting so some of this may be off )

    Thanks in advance for your help, much appreciated

  2. #2
    Join Date
    May 2001
    Location
    carthage ms
    Posts
    630
    your furnace is telling you that it is in need of servicing, call your service company or installer, they will be able to fix you up
    The 2008 NATE TOP TECH!!!!!

  3. #3
    Join Date
    May 2008
    Location
    Missouri
    Posts
    3,483
    Call your local dealer and have your furnace put on a regular pre-paid maintenance program. For now, just make sure air filter is clean. Sorry but this is NOT a DIY site.

  4. #4
    Join Date
    Dec 2009
    Posts
    10
    Thanks, it is on a maintenance plan. It never does this when they check it, very intermittent. I have no intention of fixing it myself, just thought I could pass on to the technician some possibilities to check. Also to know if this was a common issue causing no damage, or something serious that could lead to a major problem.

    I will call for service again, thanks

  5. #5
    Join Date
    May 2008
    Location
    Missouri
    Posts
    3,483
    Your furnace may have a "pre-purge" cycle. If this is an un-common thing then call them again. If has been a continueing occurance since installed then I'd not worry about it. Is this a "zoned" system? Lots of zone control systems do a short purge cycle.

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