Dometic single zone stat

[joshuajim]

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.

[Bobbo]

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

[joshuajim]

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.

[ScottG]

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.

[MEXICOWANDERER]

(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...

[newman_fulltime]

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?

[joshuajim]

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]

newman fulltimer wrote:
Are you that bored to worry about 1 degree

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

[dougrainer]

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

[enblethen]

It works the same as an anticipator!
Closer to the set temperature the more the system will run.

[2oldman]

enblethen wrote:
The furnace/AC will run more to keep it at 1 degree. Will use more energy!

That sounds like nonsense.

[time2roll]

Is it new? Sounds like a defect or fail.

Is it set right at temp? Set it a few degrees up and let it run a minute.
Mine has been fine. Although I have mine at 2 degrees to reduce cycling and save battery.

Do you have the original or the new comfort touch?

[enblethen]

The furnace/AC will run more to keep it at 1 degree. Will use more energy!
What is exact model number?

[newman_fulltime]

2oldman wrote:
Nice comment Newman.

Does the manual say anything about this?

Ask doug he will know the CORRECT answer :B

[ScottG]

There's no reason you should want a 2 degree swing. The most efficient stats, Energy Star rated, keep it to less than a degree and save energy doing so.
THey aren't cheap but a good residential ES rated stat will do a much better job. You just have to add a switch for AC fan speed or leave it set to high.