Turning on the A/C

Discussion in 'General Discussion' started by Flytrade, Jun 25, 2019.

  1. Flytrade

    Flytrade Member

    Feb 20, 2018
    Bradenton, FL
    2006 320 Sundancer
    Twin 6.2L Mercruiser
    I have been turning on the A/C by just using the circuit breaker. However, I have been told this may not be the best way to turn on the unit; that first the circuit breaker should be turned on, and then the A/C should be turned on at the control panel. Of course, this would require the A/C to be turned off at the control panel after each use. Naturally I like my procedure better because it only requires one switch to be turned on. Does it make any difference how it's turned on?
  2. JimT

    JimT Well-Known Member SILVER Sponsor

    Jul 7, 2009
    Charlotte, NC- LKN
    2010 330 Sundancer
    T-350mags w/BIIIs & Axius, 5.0 kw Kohler
    I have always turned mine on and off at the breaker.
  3. Captn TJ

    Captn TJ Active Member

    Sep 19, 2017
    Catawba Island, Oh
    2005 280DA
    Raymarine E80
    5.0 with Bravo 3
  4. Stee6043

    Stee6043 Well-Known Member

    Jun 1, 2015
    West Michigan
    1997 Sundancer 400
    7.4L Gassers
    I'm not even sure I'd know how to turn it off at the t-stat :) I've always used the breaker...
  5. Robski97

    Robski97 Well-Known Member

    Jan 15, 2007
    North Bellmore, NY
    Cummins QSC 8.3's
    I guess ideally everything should be turned off at their specific control , then breaker be turned off. IDk anyone that does... Hell im an ac guy and I just turn the breaker off.

  6. techmitch

    techmitch Well-Known Member GOLD Sponsor

    May 1, 2008
    Chesapeake Bay, Middle River/Frog Mortar Creek MD.
    1999 270 DA
    Twin 4.3s W/Alpa I Gen II's
    Interesting. I was wondering if you would chime in here Rob.
    Robski97 likes this.
  7. Woody

    Woody Well-Known Member PLATINUM Sponsor

    Nov 20, 2007
    N. Wisconsin/Lk Superior
    2005 420DA
    Cummins 6CTA8.3
    I shut mine down at the control first, then breaker. It's the same way I shut down lights, TV, radio, etc. It's also how I shut down shore power....the items themselves, breakers, lazerette switches, shore power pedestal. I can't help it, it must be done that way.:)
    Soulshine, Todd320 and Robski97 like this.
  8. JVM225

    JVM225 Well-Known Member GOLD Sponsor

    Apr 8, 2008
    Farmingdale, NY
    2002 410 Sundancer, Monaco Edition.
    3126 Cats.
    I use the remote.
  9. Great Lakes

    Great Lakes Well-Known Member GOLD Sponsor

    Oct 11, 2016
    Lake St. Clair - Michigan (MacRay Harbor)
    2005 390 Sundancer
    GHS Platform
    Bow/Stern Thrusters
  10. bmac

    bmac Well-Known Member

    Jan 11, 2008
    Holbrook, NY
    2006 58 Sedan Bridge, Walker Bay Generation 390 RIB w/40hp Yamaha, 2014 Wellcraft 232 CC w/Yamaha
    MAN 900 CRM
    At the breaker....it doesn’t matter, something has to be energized last. The ac unit electric system itself ensures a controlled start but even then the in rush current is where the real exposure lies
  11. Little Ducky

    Little Ducky Well-Known Member

    Jun 5, 2017
    Dickson, TN / Chattanooga, TN
    1998 290 Sundancer
    Twin EFI 5.0L w/Alphas
    Kohler 4kW
    I turn off at the breaker as well most of the time.
  12. Flytrade

    Flytrade Member

    Feb 20, 2018
    Bradenton, FL
    2006 320 Sundancer
    Twin 6.2L Mercruiser
    Thanks for all the inputs - I'll use the breaker as I have done in the past.
  13. bbwhitejr

    bbwhitejr Well-Known Member SILVER Sponsor

    Apr 14, 2013
    Lake Lanier GA
    2007 44DB
    Cummins QSC 8.3s


  14. CaptRonn

    CaptRonn Active Member

    May 25, 2016
    on a large body of water
    1999 Sea Ray 400 Sedan Bridge
    Convert fuel into noise
    My boat is fairly modern, the temp control of the AC units include an "on/off" switch.

    Now that I think about, so does everything else electrical.
    Robski97 likes this.
  15. THJeff

    THJeff Member

    Jan 4, 2012
    Rochester Hills, MI/Belle Maer Harbor/Club Island
    2000 410 Sundancer
    CAT 3126 Diesels
  16. In Deep

    In Deep Member

    May 28, 2007
    Branchville, NJ
    2015 260DA
    350 MAG MPI
    I always shut all my electronics off at the unit then the breaker last. Dont want to take a chance of any surge blowing a display or control of any unit when I flip the breaker.
    THJeff likes this.
  17. bobeast

    bobeast Dance the Tide SILVER Sponsor

    Oct 22, 2017
    Isleton, CA
    2002 310DA
    350 MPI w/V-drives
    Here's a twist. I have a relay bridging the breaker and the relay is controlled by a BoatCommand so I can turn it on before I leave for the boat.

    I suppose technically, that's turning it on by the breaker. I just couldn't resist the humble brag :)

Share This Page

Show Sidebar