Refrigeration issue

May 21, 2014
120
Hunter H44 Toronto
I'm hearing an annoying buzz from the Adler Barber refrigeration unit. This buzz is on constantly even when switched off at the panel.........10 year old original installation. Any thought?
 
May 16, 2007
1,509
Boatless ! 26 Ottawa, Ontario
We have the same boat with the same refrigeration system. I found the thermostat for the refrigerator box spill over fan was connected to the freezer thermostat. If the freezer did not warm up the fan could not run and the fridge did not stay cold.

I rewired the fridge spill over fan to run off the 12V supply for the compressor. It now performs much better and runs when required.

If a previous owner of your boat wired it so the spillover fan had a separate 12 volt supply that fan could be the sound you are hearing.

Let us know what you discover, Bob