Defrost mode

[Flooringit]

I did the air flow mod, and right after that I started having issues. The air flow was great but the unit started freezing up. It freezes on the inside of the coil not the intake side with the sensor in it. I pulled off the cover after a night of ac running and the ice was a inch thick on the coil. Anyone know how to fix the sensor issue? I have now pulled out the air flow mod to see if the cold air was making it freeze but it’s super humid here and it hasn’t went into defrost mode in 20 minutes like they usually do.

 

[Fox]

I know nothing about RV AC systems, however I previously had a similar experience with my home AC system.
MY Frozen up problems were diagnosed as Low Freon, due to a slow leak.