Ours did that. It goes into some sort of self destruct fault mode. I had ran it on low fan speed until the unit froze up then i let it thaw and put it on auto and it would simply run the compressor with no fan. I checked the blades and they were free. Got the owners manual and figured a system initialization might help. It did. Now that we are in another new trailer I'll not try manual fan control. Keep it on the automatic. I did do the system initialization on this one too figuring it probably was not done at install per the instructions. Below is the reset and link to the manual.
DOMETIC 3313192 OPERATING INSTRUCTIONS MANUAL Pdf Download.
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 condi-tion. See page 4, "Quick Reference To Control Buttons".• Press the "+" button and, while holding it, also press and holdthe 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 informationon furnace mode differential setting.About Your New Thermostat