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  1. #1
    Join Date
    Jan 2005
    Posts
    70

    Walk in running a little high

    Hey guys. I just got promoted to hvac/r guy at the hotel I work at (dollar raise that I was promised last year and more responsibility woo hoo). Anyway most of my experience is in residential so I can use a little help.

    I have a walk in thats running a little high the first thing I checked was the temp control to see if someone messed with it (these people are after my job). That's when I came up on a control I've never seen before. The only numbers on it are twt36 60hz 250vac 25a. It has a range of 60 to 250 so I'm not sure how to adjust it.

    Any help would be greatly appreciated.
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  2. #2
    Join Date
    Sep 2008
    Location
    Western PA
    Posts
    25,547
    That looks like \an oven thermostat, not a walk-in stat.

    Have you done a full work up on the system? Pressures, temperatures, etc?
    Last edited by jpsmith1cm; 08-03-2012 at 06:47 AM. Reason: oops.

  3. #3
    Join Date
    Feb 2008
    Location
    California
    Posts
    2,065
    Quote Originally Posted by bgrich2003 View Post
    the first thing I checked was the temp control to see if someone messed with it (these people are after my job).
    looks like someone messed with it.

    That aint no fridgeration stat

  4. #4
    Join Date
    Jan 2005
    Posts
    70
    Alright just wanted to make sure it wasn't just me. The thing is already as far clockwise as it can go, I tried the other way and all it seems to do is make the temp go up.

    Thanks guys.

  5. #5
    Join Date
    Jul 2012
    Location
    Kansas
    Posts
    78
    Maybe it's one of those new fangled combo walkin cooler ovens?

  6. #6
    Join Date
    Oct 2009
    Location
    Raleigh, NC
    Posts
    794
    That looks like a thermostat I saw last week in a mechanical room to control the exhaust fans.

  7. #7
    Join Date
    Aug 2012
    Location
    Palmyra, Missouri, United States
    Posts
    224
    with this installed on unit.. who knows what you are going to find. i would start cleaning then check out everything. superheat/subcooling? case temp? check back side of evaporator coil. may be starting to freeze up.

  8. #8
    Join Date
    Feb 2012
    Location
    Toronto Canada
    Posts
    1,090
    Bgrich I am with JP thats an Oven T-stat LOL

    I was wondering Bgrich What was your position before being given a raise?

  9. #9
    Join Date
    Jan 2007
    Location
    maine
    Posts
    788
    I dont see any sensing bulb.. To me looks like a fan control on a furnace

  10. #10
    Join Date
    Oct 2011
    Location
    Chicagoland Area
    Posts
    4,564
    Is this a cooler or freezer? Could be a fan delay on a freezer with hot gas defrost.
    Officially, Down for the count

    YOU HAVE TO GET OFF YOUR ASS TO GET ON YOUR FEET

    I know enough to know, I don't know enough
    Liberalism-Ideas so good they mandate them

  11. #11
    Join Date
    Sep 2010
    Location
    Western, MO
    Posts
    871
    Have you traced the wires back? Are you sure that is the temp control for the unit? The knob is marked, but if someone broke the knob, they might have thrown anything they had on it. The knob on the dryer I keep in the shop is marked about 60 off from where it should be. I just ignore it.

    jim
    Common sense isn't very common anymore.

  12. #12
    Join Date
    Aug 2012
    Posts
    7
    Yes that is a hotside stat. Curious how that is being used in a cooler. Let us know how this one turns out.

  13. #13
    Join Date
    Jan 2005
    Posts
    70
    Okay I think I figured it out. The wire is running into the door, so I'm guessing it keeps it warm so it doesn't stick.
    As far as why the temp was a little high the ambient temp was too much for the unit to handle so I put so fan to help keep it cool.

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