Thanks for all the replies!
The Supercoldmachine is air and water cooled. There is a switch that turns the water cool option on, but I never keep it on because it works quite adequately sans water. Turning that option on does not change anything.
I guess I will have to remove the sink regardless to check everything out, even to clean the condenser coils.
As of tomorrow, the unit will have been turned off for another week, so I am interested in seeing if I get any cooling when I turn it on.
Thanks again for any input, and I will report my findings.
Highport Marina ZD27
aboard S/V Fort Awesome III
"I couldn't do the things the way those people do.
I couldn't live there if you paid me to. " The Talking Heads