The unit outside is getting ice around the line close to where you put refrigerant in. House not as cool as needed
Unit is freezing up around the lines close to the outside unit.
Heating & Cooling - Whirlwind - FH-778 Air Conditioner
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Answers & Comments
Freon is low. Sounds counter-intuitive, but the large return line should be cool( even have condensation on it) but never cold enough to freeze.Either use factory pressure settings or add just enough Freon until Ice melts. If unit has a high-side sight glass there should be no bubbles present. Do not overfill.