Any warning sign that repeats, gets louder, or creates smell, smoke, leak, or ice deserves prompt attention

https://telegra.ph/How-to-Spot-a-Frozen-AC-Coil-Before-It-Damages-Your-System-09-26

Any warning sign that repeats, gets louder, or creates smell, smoke, leak, or ice deserves prompt attention. Turn the system off if needed and contact a licensed HVAC expert.