Ice forming on refrigerant lines or the indoor coil usually means restricted airflow or low refrigerant
https://padlet.com/rvdetailsdiwudb/bookmarks-s023xnif47bkkyrltezu/wish/0BA3ZpbrdNz2anPb
Ice forming on refrigerant lines or the indoor coil usually means restricted airflow or low refrigerant. Switch the AC off and let it thaw before requesting service.