Looking at the Scotsman CME506 service manual here:
http://download.partstown.com/is-bin/intershop.static/WFS/Reedy-PartsTown-Site/-/en_US/manuals/SC-CME256_sm.pdfÂ
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It says the electric eyes (bin control and ice sensors) must be replaced as a set.
That set is available here:Â Scotsman 11-0540-21 ICE LEVEL CONTROL (EYES) | Parts TownÂ
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Before you spend all that money, however, I must ask if you’ve tried to clean the sensor? It is possible you just need to clean them.
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I hope this helps!
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-John