Last night I realized my AC stopped working. I turned the thermostat to 74 degrees and by the time I woke up the house temperature was 80 degrees. My home has a single Carrier compressor (obviously outside). The air handler, evaporator coil and blower are upstairs in the attic.
I spent the day troubleshooting and figured out a few things:
- The refrigerant-filled tubes that come out of the compressor unit and into the house had ice around them, but right outside the compressor case and right before entering the house (see 2 pictures below).
- The condenser seems to be working OK as I can see some water on it (see picture).
- On the thermostat, when the system is off and the fan is on no air comes out of the registers (is my blower broken?). Every 5 minutes the attic makes a loud noise for about 10 seconds, a motor noise. I could smell burnt in my bedroom for a few minutes as well.
- Return vent filters were replaced 3 weeks ago.
- I cannot open the evaporator coils as the casing seems to be "glued" somehow with sparkling (??) or some sort of tape (see picture with red arrows).
- There is a tube coming out of the furnace in the attic with some green liquid spill around it. I'm assuming it's the refrigerant liquid. Is this normal or is there a leak going on?
- After speaking to an AC repair guy over the phone, he thinks the blower is broken. That makes sense and would explain the loud noise (blower trying to work) + the "burnt" smell + the fact that there is no air coming out of the registers even when the fan is set to "On" on the thermostat.
Any thoughts will be much appreciated.