Your Complete Guide to Manitowoc Ice Machine Troubleshooting

Manitowoc ice machines are just about as dependable as they come! But even with routine cleaning and maintenance, problems can sometimes occur. Our Manitowoc ice machine troubleshooting guide will help you answer some of the most common performance questions we get about commercial Manitowoc ice machines.

Need help with your Manitowoc ice machine ASAP? Want to talk to an equipment expert who can walk you through troubleshooting?

Manitowoc Ice Machine Troubleshooting Tips

Why is My Manitowoc Ice Maker Not Producing as Much Ice?

Ice machine manufacturers use two measurements to determine production rates: Maximum and AHRI. This is because ice machine production is directly related to the temperature of surrounding air or incoming water.

When ice machine owners notice their unit producing less than enough ice now, they naturally believe something must be wrong with the machine—when sometimes, it’s simply a matter of lowering the heat to increase ice production.

How much ice should my Manitowoc ice machine be producing?

Manitowoc ice machine spec sheets list their production rates across varying temperatures. Maximum and AHRI capacities are common measurements within the ice industry. Maximum production is the amount of ice a machine will produce when the surrounding temperature is at 70°F and the incoming water is at 50°F.

AHRI rates are lower because they list the low ice production rates when the surrounding air is 90 degrees and the the incoming water temperature is 70 degrees.

Why is my Manitowoc ice bin not filling up all the way?

All commercial ice makers, including Manitowoc ice machines, can see a drop in ice production if under less than adequate environmental conditions. The surrounding air or incoming water temperature are the most common cause factors of ice machine’s losing their efficiency.

If you notice your Manitowoc ice machine's bin doesn’t have as much ice as normal, there are some things you can check to troubleshoot and fix your unit.

Why is my Manitowoc ice maker slower in the summer?

The summer months are notorious for increased air and water temperatures that can directly affect your restaurant and overall ice production rate. The summer heat can indirectly affect your restaurant and ice supply as well, since customers and restaurant employees will want more ice to cool down drinks as the heat persists. Luckily, there are ways to prepare your restaurant ice machine for the summer heat!

Why is my Manitowoc ice machine notifying me of an Issue?

Manitowoc ice machines use a series of notifications to alert the user to potential problems. There are over 30 different Manitowoc error codes that cover a range of potential issues from extended freeze cycles to USB connection errors. Below is a reference of error codes for Manitowoc NXT modular ice machines. If you encounter any of these, please call a qualified ice machine technician to address the issue. If you’re an Easy Ice customer, contact us and we’ll send a technician to your business ASAP.

What are Common Troubleshooting Codes with Manitowoc Ice Machines?

Some of the most common error codes that show up while troubleshooting Manitowoc ice machine include the following:

  • E01: Long Freeze Cycle
  • E02: Long Harvest Cycle
  • E03: Input Power Loss
  • E19: Ice Thickness Probe Fault
  • E20: Water System Fault
  • E29: USB Communication Fault
  • E30: USB Download Fault
  • E31: Safe Mode
  • E32: RS485 Communication Fault

You can read more about these and other Manitowoc error codes here. However, instead of fiddling with the control board, we recommend you put your trust in a qualified technician when you need to resolve one of these error codes.

Other Common Manitowoc Ice Machine Troubleshooting Tips

How do you shut off a Manitowoc ice maker?

When troubleshooting your Manitowoc ice machine, there may be instances where it’s best to shut the unit down to prevent damage to the system or your business. Leaks or electrical issues are common issues that may require you to turn off the machine completely until a service technician arrives. Below is a step-by-step guide to shutting off your Manitowoc ice machine.

Troubleshooting a Manitowoc ice machine leak

A leaky ice maker is one of the most common issues we see. Still, many of the calls we receive involve water leaking from other areas—not from the ice machine itself. If you notice water around your ice machine, check to identify where the leak is coming from. You can save yourself money on a service call by calling the right expert for the job.

Why is there mold in my Manitowoc ice machine?

Poor ice production isn't the worst problem you can have with your ice maker. Ice machines are dark, dirty, and damp, which can lead to your ice maker becoming a very attractive home for mold and slime. Mold and slime feed off organic material floating in the air. Bakeries and breweries are especially common culprits for mold growth in their ice machines.

This is because of the yeast floating around, creating nutrient-rich air that can increase the risk of mold growth. This is why the owners of these sorts of establishments can see increased mold and slime in their ice machine or bin if the unit is installed too close to areas where restaurant employees use a lot of yeast.

A dirty water filter is another common culprit when it comes to mold growth, mineral buildup, and other issues in your ice machine. Routine cleaning is the best way to help prevent mold and slime from growing, as well as the buildup of other contaminants that can l make people sick.

Leave Manitowoc Ice Machine Troubleshooting to the Experts

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Ready to cut the hassle out of your ice machine experience? Want access to the highest quality commercial ice maker service in the industry? Get started with our Manitowoc ice machine subscription today!

Manitowoc Commercial Ice Machine Troubleshooting