kitchenaide icemaker making "laboring" sound

We have a stand alone icemaker. It has been a great machine. We have had to repair a few parts here and there.

Now it is making a fairly loud noise all the time. It sounds like it is "laboring" to work. Dont know if the compressor makes sounds or its a pump? The sound never stops. Kinda sounds like it is in cleaning mode. Any thoughts out there?