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  1. #1

    Confused trane troubles....aux heat in summer?

    hey folks,
    I got a brain teaser for ya. Why does my aux heat come on when it gets hot out. At night when the outside temps drop, the unit works fine. By 10 am, it will throw on the aux heat. Some times its at the start of the cycle, sometimes its during. Regardless, its not cooling when it does. Its been high 90's here daytime. What I've done so far is to turn off the unit at the breaker, then turning it back on a few seconds later. It seems to kick start the cooling, but its not a permanent fix. By the next cycle the problems start again. The filter is clean, the coils are clean, the unit outside is clear of debris. I believe the unit is less than 8-9 years old. I live in a 1400 sq ft modular. Outside unit and inside unit are only like 8 feet apart. Could it be my thermostat (old looking mercury switch type). Please help, mother coming to visit soon, and long summer ahead.

  2. #2
    Join Date
    Feb 2008
    Location
    Western NC
    Posts
    2,504
    Thats not a brain teaser.


    I bet you have a Simple Comfort Tstat......


    did I win? What do I get?
    I fully support the military and the War on Terrorism.


    If you don't know, then don't do. If you don't know and still do, then be prepared to pay someone else a lot to undo what you did and then do it right.

    If you do know, then do. But do it right. Otherwise, you may not be doing it long.

  3. #3
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,879
    You have a defective xxxxxx.
    You local service tech can fix it for you.
    Please call him before your strip heaters wipe out your xxxx, these area PITA to change out.
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    How many times must one fix something before it is fixed?

  4. #4
    Join Date
    Jun 2008
    Location
    va
    Posts
    800
    Quote Originally Posted by iraqveteran View Post
    Thats not a brain teaser.


    I bet you have a Simple Comfort Tstat......


    did I win? What do I get?
    NNNNNOOOOOO.....Not da simple comfort....I'm having flashbacks....

  5. #5
    my thermostat is a Trane weathertron.
    BTW, what is broken(xxxx), don't keep me in the dark!

  6. #6
    I'll probably have to call a tech to fix this, but I wanted to arm myself with some knowledge about the problem before I do. I'm no dummy, I work in the remodel/construction business. I work on everything in the house, except the a/c. Mainly cuz I don't have the right tools. To me it sounds like a bad sensor is giving the wrong info to the main control, so in return it is turning on a response( aux heat). or something....IDK
    Please shed some light on this dark subject so I can negotiate properly with the tech. I can't afford to pay for a bunch of work I don't need.

  7. #7
    Please Help.....time is running out for me.
    I know there is a lot of hvac geniuses here, all I ask is for one or two to give me a minute of their time. I would be glad to return the favor in any carpentry , automotive, or agriculture questions they may have. --Cheers

  8. #8
    Join Date
    Nov 2004
    Location
    North Carolina
    Posts
    443
    LOL Never met a tech that would negotiate. I don't.

    No one will tell you exactly what is wrong because this is not a DIY site and such information is not allowed in this forum.

    Call a tech and pay the man when it's fixed. It's much cheaper than the alternative.

  9. #9
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,879
    There are several possible causes.
    A tech has his OWN check out procedure. Any direction you give to look at for teh problem will only slow him down.
    Simply tell him the symptoms, and let him do his job.

    Then after you pay him.
    Go to your local used car lot and negotiate on a price for a car if you want to negotiate something.

    Going into the possibilities would violate the no DIY rules of this site. Sorry.
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  10. #10
    I'm sorry, what I meant by negotiating was not accepting the call for a new compressor, when all I needed was a sensor replacement. I don't expect a fix, but an idea of what I should expect. That way I know my tech is on track, or if he is as clueless as me. I'm not trying to break any rules.

  11. #11
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,879
    LOL.
    Well, its not your compressor causing it.
    Most likely a minor part. Price of said minor part is not always cheap.
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    How many times must one fix something before it is fixed?

  12. #12
    BTW, is it OK for me to stop the system when the aux heat light comes on, by flippin the breaker, then flippin it back on? Or am I hurting something by keeping the A/C going? Thanks for all your time.

  13. #13
    Join Date
    Jan 2004
    Location
    Lancaster PA
    Posts
    67,879
    I would leave it off when you go to bed.

    Eventually, the aux heat will come on right away, even after shutting the breaker off, and turning it back on.

    Not the best thing to keep turning it on and off.
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    How many times must one fix something before it is fixed?

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