--- title: "Manitowoc E01: long freeze cycles stopped the ice machine" description: "What E01 means on Manitowoc E01: long freeze cycles stopped the ice machines, what to check before booking, and when it is not a failure at all." url: "https://icemachinerepair.center/error-codes/manitowoc-e01/" --- # Manitowoc E01: long freeze cycles stopped the ice machine Every freeze cycle has a ceiling on a Manitowoc Indigo head. ## What E01 actually means. Every freeze cycle has a ceiling on a Manitowoc Indigo head. When the ice thickness probe never calls for harvest before that ceiling, the board forces a harvest, counts the miss, and after enough misses in a row it stops the machine and stores E01. Scale on the evaporator, a starved water trough, a hot or dirty condenser and a weak sealed system all stretch the freeze. Manitowoc ice machine display What to do when E01 shows on the ice machine ### Kind of code Harvest and freeze cycle A freeze ran longer than the board allows, or a harvest started and the ice never fell. Scale on the evaporator holds the sheet to the plate, a thickness probe crusted with minerals never signals, a hot gas valve that does not open leaves the plate cold, a harvest assist that does not push, or a water curtain that swings without tripping its switch all end in this family. A cleaning cycle run by the manual often clears it; a valve or a probe is a technician's job. ### Usually leads to Ice machine harvest repair The hot gas valve, harvest assist, curtain switch and thickness probe that decide when a sheet of cubes is done and make it drop. ### Shows up as Ice Machine Error Code or Flashing Light: What It Is Telling You An ice machine error code may show as a number on a small display, a pattern of blinking lights on the control board, a colored light on the front, or a machine that stops with one indicator flashing. ### Make Manitowoc With a Manitowoc ice machine, the technician notes what the controls report and checks the bin control before opening the cycle for testing. ### Source Manitowoc Indigo Series air, water and remote condenser ice machines technician's handbook (Part Number 000014794) Indigo and Indigo NXT modular heads keep E-numbers in the Event Log (Menu, Service, Event Log). Older Indigo boards stop after six 60-minute freeze cycles; Indigo NXT firmware stops after three 35-minute ones. ## Before you book, in this order. Each step comes from Manitowoc's own guidance for E01 on its ice machines. Follow it to the end: the last card says whether this is a visit. 01 Restart the way Manitowoc describes: press On/Off until the screen reads Off, then press it again so it reads Making Ice. 02 Check that the water supply valve to the head is open and that the room around the head is not unusually hot. 03 Look at the condenser grille or air filter; if it is matted with dust, clean the filter as the manual shows. 04 If the head stops again with E01, book a visit so the probe, the water level and the sealed system can be measured. ### Still there? It usually turns into [ice machine harvest repair](https://icemachinerepair.center/services/ice-machine-harvest-repair/). Book with the code and the model number. ### What not to do E01 does not mean the ice falls slowly or sticks; that is E02. It also is not a power problem, because the board keeps running cycles until the count is reached. ## What you may notice with it. The ice machine problems E01 tends to arrive with. Answer these at the ice machine before anyone is booked. [All problems](https://icemachinerepair.center/problems/) Before you call ### [Ice Machine Error Code or Flashing Light: What It Is Telling You](https://icemachinerepair.center/problems/ice-machine-error-code/) [All 7 causes, cheapest first](https://icemachinerepair.center/problems/ice-machine-error-code/) It also comes with - [**Ice Machine Running but Not Making Ice**](https://icemachinerepair.center/problems/ice-machine-not-making-ice/) - [**Ice Machine Making Too Little Ice for the Rush**](https://icemachinerepair.center/problems/ice-machine-making-little-ice/) - [**Ice Machine Not Harvesting: Ice Stays Stuck on the Plate**](https://icemachinerepair.center/problems/ice-machine-not-harvesting/) Problem ### Ice Machine Error Code or Flashing Light: What It Is Telling You 7 causes, cheapest first Where E01 usually leads ## Ice machine harvest repair. **Thickness probe, curtain switch, harvest assist and hot gas valve · low to moderate.** Book a visit [What the job involves](https://icemachinerepair.center/services/ice-machine-harvest-repair/) ## Manitowoc ice machines. With a Manitowoc ice machine, the technician notes what the controls report and checks the bin control before opening the cycle for testing. [Manitowoc ice machine repair](https://icemachinerepair.center/brands/manitowoc/) More Manitowoc codes [E02](https://icemachinerepair.center/error-codes/manitowoc-e02/) [E03](https://icemachinerepair.center/error-codes/manitowoc-e03/) [E04](https://icemachinerepair.center/error-codes/manitowoc-e04/) [E05](https://icemachinerepair.center/error-codes/manitowoc-e05/) [E11](https://icemachinerepair.center/error-codes/manitowoc-e11/) [E12](https://icemachinerepair.center/error-codes/manitowoc-e12/) [E19](https://icemachinerepair.center/error-codes/manitowoc-e19/) [E20](https://icemachinerepair.center/error-codes/manitowoc-e20/) [E21](https://icemachinerepair.center/error-codes/manitowoc-e21/) [E25](https://icemachinerepair.center/error-codes/manitowoc-e25/) [E28](https://icemachinerepair.center/error-codes/manitowoc-e28/) [E31](https://icemachinerepair.center/error-codes/manitowoc-e31/) [All 15 Manitowoc codes](https://icemachinerepair.center/error-codes/#codes-manitowoc) Harvest and freeze cycle on other makes [Atosa E2](https://icemachinerepair.center/error-codes/atosa-e2/) [Blue Air E1](https://icemachinerepair.center/error-codes/blue-air-e1/) [Follett HI AMPS](https://icemachinerepair.center/error-codes/follett-hi-amps/) [Hoshizaki 1 beep](https://icemachinerepair.center/error-codes/hoshizaki-1-beep/) [Ice-O-Matic Error 1](https://icemachinerepair.center/error-codes/ice-o-matic-error-1/) [Koolaire SL#1](https://icemachinerepair.center/error-codes/koolaire-sl1/) [Scotsman 1](https://icemachinerepair.center/error-codes/scotsman-1/) [Sub-Zero ICE flashing](https://icemachinerepair.center/error-codes/sub-zero-ice-flashing/) [All 23 codes of this kind](https://icemachinerepair.center/error-codes/#family-harvest) Manitowoc builds this ### Modular ice machine An ice-making head set on top of a separate storage bin or drink dispenser, cooled by air, water or a condenser on the roof, turning out hundreds of pounds of cubes a day. Manitowoc builds this ### Undercounter ice machine A self-contained ice machine that makes and stores its own ice under a bar, a service counter or a kitchen island, from commercial units to clear-ice models in large homes. Manitowoc builds this ### Nugget ice machine An ice machine that freezes a thin layer inside a chilled cylinder and pushes it out with an auger as soft, chewable nuggets, for clinics, offices, hotels and large homes. ## In Manitowoc's own words > E01 Long Freeze Cycle [Manitowoc Indigo Series air, water and remote condenser ice machines technician's handbook (Part Number 000014794)](https://www.manitowocice.com/asset/?id=pnvoq) [Manitowoc Indigo Series air, water and remote condenser ice machines technician's handbook (Part Number 000014794)](https://www.manitowocice.com/asset/?id=pnvoq) [Manitowoc Indigo NXT ice machines installation, operation and maintenance manual (Part Number 040009662 Rev 02)](https://www.manitowocice.com/asset/?id=bepmjn&prefLang=en-US) [Manitowoc Indigo NXT ice machines installation, operation and maintenance manual (Part Number 040009662 Rev 02)](https://www.manitowocice.com/asset/?id=bepmjn&prefLang=en-US) Every code on this site is taken from the manufacturer's documentation, never from a forum or a parts listing. Indigo and Indigo NXT modular heads keep E-numbers in the Event Log (Menu, Service, Event Log). Older Indigo boards stop after six 60-minute freeze cycles; Indigo NXT firmware stops after three 35-minute ones. ## Manitowoc E01 ice machine repair, where we come out. The same visit in every metro below: the code, the model number, and a diagnosis before any part is ordered. 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Restart the way Manitowoc describes: press On/Off until the screen reads Off, then press it again so it reads Making Ice. If it comes back, it needs a visit. ### Why did my Manitowoc Indigo stop and log E01 overnight? Night is when a building's water and air are at their extremes: a closed kitchen can run hot and a filter can run low on pressure. The head simply ran out of freeze time too many times in a row. Restart it once and watch the next cycle. ### Does descaling fix E01 on a Manitowoc? Often, when the evaporator is coated and the probe is filmed over, because scale slows the freeze. Manitowoc asks for a full de-scale and sanitize at least every six months, so a head that is overdue should be cleaned before parts are blamed. ### Will E01 clear itself on a Manitowoc head? The stored entry stays in the Event Log until it is cleared, but the head restarts when you cycle the On/Off button. If it keeps running normally, the cause was passing; if it stops again, the manual says to call for service. --- **[Read on the site: Manitowoc E01: long freeze cycles stopped the ice machine](https://icemachinerepair.center/error-codes/manitowoc-e01/)** **[Book a visit with IceMachineRepair.center](https://icemachinerepair.center/schedule/)**