Originally Posted by Oneilkeys
Do you have the Coleman Mach8 with the control knobs in the overhead unit rather than a thermostat on the wall? If you do (I have that unit in my Travato) I do not believe there is any way to adjust the “temperature swing) as there is with a wall Thermostat.
This is a link to the Coleman Mach manuals.
Thank you for your reply. There are no knobs or wall thermostat on my Vegas, just the Lippert One Control.
The Lippert response was to set the function to "Heat/Cool" and adjust the two setpoints. This was not quite what I wanted to do as I do not want to turn on the heat at the lower setpoint-I just want to have a "tighter range" for the Cool to operate within.
I just went to my storage site and noticed my L1C has two possible heat source settings- "Prefer Gas" and "Other", so I did the following:
--Set the function to Heat/Cool
--Set the heat preference to Other
--Set the two temp settings as close as they can be set, e.g. 72/74.
Since I have no heat source other than Gas, this appears to turn the Cool on at 74, off at 72, and turn the non-existent heat source on at 72. Of course, the fan can be set to Auto, High, or Low as well.
In a short trial, this seems to work fine and is probably the minimum temp swing that can be achieved for the A/C. We will be taking trip in a week and will have a longer period to check it out.
In a perfect world, it would be great if someone could design an RV heat pump with a variable speed fan and compressor.