Dirty Coils?

TexasChaps wrote:

peirek wrote:
I have had the thermocouple come loose from the coil and cause a low cooling effect. I can't recall if this allowed the compressor to continue to run however.

You may be able to see the thermocouple from the bottom but on mine I had to correct from the topside. My memory is getting worse, but I believe it just clipped onto the coil.

thermocouple should be in the return air stream not connected to the coil..

Yes that thermocouple controls the room temp i.e. thermostat. The one I am describing determines the coil temp and shuts down the compressor if they get too cold (before freezing occurs). Thinking back, it may have caused the coils to freeze when it was disconnected resulting in reduced cooling.