Manitowoc (now part of Welbilt) is one of the two brands that dominate American commercial ice making, and how it reports trouble depends entirely on which generation you own. The current Indigo NXT series and the previous Indigo series show alphanumeric E-codes (E01 through E38) on their displays, with the event log storing the history a technician will want to see. The NEO undercounter line has no code display at all — it communicates through a red wrench-shaped Service light that blinks while the machine tries to self-correct and goes solid when a safety limit has stopped it. Older S-model and Q-model machines flash safety-limit lights when you toggle the switch from OFF to ICE: one flash for a long freeze cycle, two for a long harvest.
Across all generations the same pattern holds: the most common Manitowoc faults — long freeze, long harvest, high condenser temperature, probe faults — trace back to scale and dirt far more often than to failed components. Find your exact code below; each page covers what the machine detected, the safe first checks, and the point where it becomes a technician's job.