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.