Forum Discussion

joshuajim's avatar
joshuajim
Explorer II
Nov 08, 2017

Dometic single zone stat

I prefer a 1 degree furnace differential. No need to tell me why I should use 2 degree.

Here’s the issue. My system is properly initialized, but if I try to change the differential to 1 degree it loses it’s initialization and i get the click, click, click.

When I reinitialize the system, it reverts back to 2 degree. Catch 22.

Any ideas.
  • Thanks Doug for your responsive answer. I have the manual and am programming it correctly. For the past 4 years, I have been able to set the 1 degree differential without issue. This is a recent change.

    Now by the way, 2 degree differential causes longer less frequent running time vs 1 degree more frequent but shorter running time.

    1 * 2 = 2 or 2 * 1 = 2. Exact same thing.
  • joshuajim wrote:
    newman fulltimer wrote:
    Are you that bored to worry about 1 degree


    Are you that bored to write a non-responsive answer? Hmmm...

    yup.....and?
  • (Einstein If He Lived In The Days Of Online Forums)

    E=MC2

    (Why?)

    (What does this have to do with life?)

    (Prove it)


    Wotta Hoot...
  • 2oldman wrote:
    enblethen wrote:
    The furnace/AC will run more to keep it at 1 degree. Will use more energy!
    That sounds like nonsense.


    It is nonsense and the furnace runs MORE to overshoot the set temp - a lot more.
    Tens of millions of dollars and research by universities, utilities and companies like Honeywell have developed those systems and have proven they save energy.
  • newman fulltimer wrote:
    joshuajim wrote:
    newman fulltimer wrote:
    Are you that bored to worry about 1 degree


    Are you that bored to write a non-responsive answer? Hmmm...

    yup.....and?


    My condolences.
  • dougrainer wrote:
    In the FURNACE mode the system will cycle the RV’s furnace On
    and Off based on the room air temperature and the temperature
    set-point on the Single Zone LCD thermostat. The system can be
    configured to operate using an On/Off differential of either 1 degree
    F or 2 degree F. This feature is programmed during the system initialization.
    See “System Initialization” on page 3.
    To set the temperature differential the system must be Off. Press
    the “?” button and, while holding it, also press and hold the On/Off
    Mode button for three seconds. Release the On/Off Mode button.
    Then release the “?” button. Press the “+” button to toggle between
    “d1” and “d2”, “d1” for 1 degree F differential and “d2” for 2 degrees
    F differential.

    System Initialization
    A system initialization will need to be performed by the installer after
    the system is installed.
    • Make sure the Single Zone LCD thermostat is in the Off condition.
    See page 4, “Quick Reference To Control Buttons”.
    • Press the “+” button and, while holding it, also press and hold
    the On/Off Mode button for three seconds. LCD will show
    ? ? . Press the On/Off Mode button again to turn system off.
    This completes the initialization.
    The furnace On/Off temperature differential should be set at this time.
    See “Mode Description - Furnace” on page 9 for further information
    on furnace mode differential setting.
    OCD MUST BE A PAIN:B Doug

    I was JUST gonna say that! :B

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