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  1. #1
    Join Date
    Jan 2011
    Location
    Boston, MA
    Posts
    459

    "I thought I smelled something burning.."

    Customer said she heard a loud noise and smelled something burning. Breaker was tripped when I got there and found this. Was curious what caused it so I did a little searching on here and found this older thread. Post #11

    http://hvac-talk.com/vbb/showthread....r+start+device

    3rd pic is what it used to look like. Both units are Heat Controllers 10 seer ~9yrs old
    Attached Images Attached Images    

  2. #2
    Join Date
    Dec 2002
    Location
    SouthEast NC ICW & Piedmont Foothills
    Posts
    7,635
    that little start assist blow up
    It`s better to be silent and thought the fool; than speak and remove all doubt.

  3. #3
    Join Date
    Aug 2001
    Location
    forney texas
    Posts
    17,890
    Does look like the PTC start assist flamed out

  4. #4
    Join Date
    Jan 2011
    Location
    Boston, MA
    Posts
    459
    ya the PTC blew up, didn't know exactly what happened at the time. Came home and found that thread, then it all made sense.

  5. #5
    Join Date
    Aug 2003
    Location
    Fort Worth, TX
    Posts
    11,283
    PTC = POS.

    PTCs get HOT while the unit runs. On top of that it's jammed inside an electrical box with no ventilation, a condenser unit under load, a contactor and capactor that run warm, sun beating on the cabinet and electrical box, possible semi-brown out operation....is it any wonder these things blow?
    • Electricity makes refrigeration happen.
    • Refrigeration makes the HVAC psychrometric process happen.
    • HVAC pyschrometrics is what makes indoor human comfort happen...IF the ducts AND the building envelope cooperate.


    A building is NOT beautiful unless it is also comfortable.

  6. #6
    Join Date
    Aug 2001
    Location
    forney texas
    Posts
    17,890
    There's been a PTC in my HP for 9.5 years. How long should one last?

  7. #7
    Join Date
    Aug 2010
    Location
    Memphis
    Posts
    343
    All that is wrong is that you let the smoke out. Put some new in and it will be fine

  8. #8
    Join Date
    Jun 2011
    Location
    Houston area
    Posts
    1,493
    I'd be interested to know if there was any secondary damage like to the other cap, contactor or wiring. In all my years I can't remember seeing one "blown up" like that.
    The picture in my avatar is of the Houston Ship Channel and was taken from my backyard. I like to sit outside and slap mosquitos while watching countless supertankers, barges and cargo ships of every shape and size carry all sorts of deadly toxins to and fro. It's really beautiful at times.....just don't eat the three eyed fish....

    `. .` .>(((>

    `... `. .` .>(((>

    .` .>(((>

    LMAOSHMSFOAIDMT

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