Originally Posted by JDMan
My used 2017, 19' had the A/C added at the factory after the unit was built. The thermostat is self-contained in the A/C unit. Has anyone made the modification to add a remote digital thermostat? If so, how difficult was it? Any help would be appreciated.
I did a mode on my previous Casita where we tied the rooftop AC into aftermarket Digital thermostat. Required a relay to be installed where Air-conditioner gets 120v power source to AC side of relay and 12v side run to digital thermostat and small 12v SPST switch to separate Heat and AC functions at the thermostat.
Not sure if the mode has been discussed here as I have not seen such, but you can find the mod discussed and how too on Casita Forums.
Two benefits of the mode, Digital thermostat controls the AC so you have less temp swing. Also when desired temp is reach the whole AC unit turns off including the fan. When air is needed, the unit will turn on automatically.
This was also time when Casita only had analog thermostats