Ron, first check to be sure that the air flow from the discharge side is not short cycling back into the return air inlet. A lot of times the unit is not properly installed and a gap in the division of these two ports can cause the unit to ice up. Use some foil duct tape to seal off any air that can leak through the output right back into the return and retry operation. Good luck and enjoy!
Mike, Amy & Muffin, Full Timers
RVSA Certified Master Technician
iRV2.com -Gulf Stream Owners Forum Leader
2000 Scenic Cruiser
99 Chevy Silverado 4 X 4 Toad
2006 Saturn Vue AWD Toad
NASCAR #3 & #8