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There is frost
Thanks. that means the inside coil has an inch or so of ice blocking the air flow,That happens if you set it below 70F on a cool night, or if the air filter is dirty, or if it is an old system with a dirty coil and blower wheel.For now, turn the cooling OFF and set the fan switch to ON... the coil will defrost in 4 or 5 hours... start it up again , then measure the cold air temperature coming out of the air ducts, it should be 15 to 20F cooler than room temperature, and feel the suction line after half an hour and tell me if it is cool or not.Let me know what you discover. We can go from there.--------------
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