Replace Dometic Tstat

[aguablanco]

I currently have a Dometic Digital tstat and want to replace it with a Honeywell digital. The dometic only has 3 wires and I am now confused. Anyone have any info that might help?
Thanks,
RichH

[time2roll]

You would need to replace the control board in the ceiling to the old style and pull some additional wires.
Why the change?

[aguablanco]

Doug, Thsnks for the info, I really appreciate it.
RichH

[dougrainer]

Yes, You cannot do it. The 3 wire system sends a signal to the AC control board in the AC upper housing. It is proprietary and will not work with Home type wall tstats. Doug