The Ultimate Troubleshooting Guide for Manitowoc Ice Machine

Posted: December 20, 2023

Commercial ice machines are essential for various business spaces such as restaurants, bars, cafes, and hotels. Manitowoc ice machines are a popular choice due to their high performance and durability. However, with frequent and heavy use, even the best ice machines can encounter malfunctions. 

These issues can range from simple fixes like cleaning to more complex problems requiring the assistance of a service technician. To ensure your ice machine Manitowoc is running at optimal performance, it's crucial to address any problems promptly. ParstFe is your go-to destination for commercial restaurant parts, including ice machine parts. We offer a wide selection from leading manufacturers, ensuring high-quality and reliable components for your business. Get all the parts you need from ParstFe to keep your restaurant running smoothly. 

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Fortunately, with the availability of Manitowoc ice machine parts and accessories, replacing any lost or damaged components is easy. In this Manitowoc ice machine troubleshooting manual, we'll provide you with the tools to identify and solve ice maker troubleshooting, enabling you to maintain a steady supply of ice for your business.

Table of contents:
Overview of Manitowoc Ice Machines
Common Manitowoc Ice Machine Replacement Parts
How to reset Manitowoc Ice Machines?
How to keep Manitowoc ice machine on off mode
How to turn on Manitowoc ice machine?
Is your Manitowoc indigo ice machine stuck in off mode
Preventative Maintenance Tips

Overview of Manitowoc Ice Machines

We know that Manitowoc commercial ice maker are known for their high-quality and reliable ice production. They offer a variety of ice machine models, each designed for specific applications and production capacities. Here are the common types of ice machines Manitowoc:

  • Modular Ice Machines
  • Undercounter Ice Machines
  • Countertop Ice Machines

Look at our Commercial Ice Machine Buyer Guide, which provides essential information and helpful tips to assist you in making the right decision when purchasing an ice machine for your business.

Common ice machine Manitowoc replacement parts

When it comes to Manitowoc ice machines, there are several common replacement parts that may be needed over time to ensure proper functioning and maintenance. Here are some of the commonly replaced Manitowoc ice machine parts:

Manitowoc ice machine partsHow does it work?Why to replace?
 FilterFilters are crucial for maintaining water quality and preventing impurities from entering the ice-making process.Replacement filters are required periodically,periodically as recommended by the manufacturer or based on water quality tests.
 Control boardsControl boards are responsible for regulating various functions of the ice machine, such as temperature control and ice production cycles.If the control board malfunctions or fails, replacement may be necessary to restore proper operation.
 MotorsIce machine motors power essential components like the compressor and auger, facilitating ice production and dispensing.If a motor becomes defective or worn out, replacing it can restore the machine's functionality.
 Adapter kitsAdapter kits are used when replacing certain components to ensure compatibility and proper installation. Adapter kits may be required when replacing motors, valves, or other parts to ensure a secure fit.
 Replacement doorThe ice machine door is subject to wear and tear due to frequent opening and closing.If the door becomes damaged or worn, replacing it can help maintain insulation and prevent temperature fluctuations.
 CompressorsCompressors are responsible for cooling the refrigeration system, enabling ice production.If the compressor fails or operates inefficiently, replacing it is essential to restore cooling capacity.
 Cleaning systemsManitowoc ice makers require regular cleaning to remove mineral deposits and prevent bacterial growth. Replacement cleaning system components, such as pumps or hoses, may be needed if they become damaged or ineffective.
 Replacement water level probeWater level probes monitor the water level in the ice machine's reservoir. They ensure proper operation and prevent ice maker overflows water or inadequate water supply. If the probe malfunctions or becomes damaged, replacement may be necessary.
 Replacement valveValves control the flow of water and refrigerant within the ice machine.If a valve becomes faulty or starts leaking, replacing it can restore proper functioning and prevent water or refrigerant loss.
 Hoses and tubesHoses and tubing are integral for water and refrigerant flow within the ice machine. If they develop leaks, cracks, or other damage, replacing them is necessary to prevent system malfunction and maintain proper connections.
 Replacement evaporator assemblyThe evaporator is responsible for freezing water and forming ice. The evaporator is responsible for freezing water and forming ice.

How to reset manitowoc ice machine?

Sometimes just a simple Manitowoc ice machine reset will resolve issues. Here is how to reset ice machine:

  • Unplug the machine from the power outlet to turn it off.
  • Allow around 10 seconds.
  • Plug the machine back in and hit the power switch ON button once more.
  • If a blue light emerges, the unit has been successfully reset.

Common issues with Ice Machines Manitowoc

Now that you know what are the common Manitowoc ice machine parts that require replacement. Let us find out the most common problems that can occur with these ice machines and Manitowoc ice machine troubleshooting tips and tricks:

Ice maker not making enough ice: If your Manitowoc ice maker not making enough ice at all, there are a few potential causes to consider:

Power Supply: Check if the machine is receiving power by ensuring it is properly plugged in and the circuit breaker is not tripped.

Water Supply: Ensure that the water supply to the machine is sufficient and not blocked. Check the water inlet valve for any clogs or restrictions.

Water Filter: A clogged or dirty water filter can restrict water flow and affect ice production. Check the filter and clean or replace it if necessary.

Evaporator Plate: The evaporator plate, which is responsible for freezing water, may be dirty or covered in scale. Inspect the plate and clean it using a Manitowoc-approved nickel-safe cleaner.

Harvest Cycle: If the machine is stuck in the harvest cycle, it will not produce new ice. Check the control board or the harvest switch for any malfunctions.

Note: If your Manitowoc ice machine not making ice even after cleaning, contact Manitowoc tech support.

Ice machine not working, restarts when switched off, and on again: If your ice machine stopped working but restarts when you turn it off and on again, the issue could be related to:

Control Board: The control board may be experiencing intermittent malfunctions if ice machine running but not making ice. Inspect the control board for any loose connections, damaged components, or signs of overheating. Consider replacing the control board if necessary.

Electrical Supply: Check the electrical supply to the ice machine. Ensure that the voltage and wiring connections are correct and stable. Inconsistent power supply can cause the machine to shut off unexpectedly.

Overheating: The ice machine may be overheating, triggering a safety feature that shuts it down temporarily. Check the condenser and evaporator coils for excessive dirt or debris buildup. Clean the coils and ensure proper airflow around the unit.

Sensor Issues: Faulty sensors, such as the water level sensor or the ice thickness probe, can cause the machine to shut down. Inspect the sensors for any damage or misalignment. Clean or replace the sensors as needed.

Low ice production : If your Manitowoc ice machine is not making ice just running water or producing ice, but the quantity is lower than expected, consider the following possibilities:

Water Supply and Filter: Check the water supply pressure and ensure the water filter is clean. Low water pressure or a clogged filter can result in reduced ice production.

Water Inlet Valve: Inspect the water inlet valve for any restrictions or damage. It may need cleaning or replacement if it is not allowing enough water into the machine.

Condenser: A dirty or malfunctioning condenser can hinder the ice-making process. Clean the condenser coils and ensure proper airflow around the unit.

Harvest Cycle Issues: If the harvest cycle is not functioning properly, it can lead to lower ice production. Check the control board, harvest switch, or harvest timer for any faults.

If you have a Scotsman ice machine, it's recommended to familiarize yourself with the Scotsman ice machine troubleshooting guide, as it can help you quickly identify and resolve any issues that may arise with your machine.

Mold in Manitowoc ice machines: The growth of mold in Manitowoc ice machines can be a result of poor maintenance or improper cleaning. To address this issue:

Cleaning and Sanitizing: Follow the manufacturer's instructions to regularly clean and sanitize the ice machine. Use a Manitowoc-approved cleaner and sanitizer to eliminate mold and bacteria.

Check out this Manitowoc ice machine cleaning guide for more information

Water Filtration: Ensure that the water filtration system is properly installed and maintained. A good filtration system will help reduce contaminants and inhibit mold growth.

Regular Inspections: Regularly inspect the ice machine for any signs of mold or mildew. Pay attention to the evaporator plate, water distribution components, and the interior of the machine. If you notice mold, clean the affected areas thoroughly.

Proper Ventilation: Ensure that the ice machine has proper ventilation and airflow. Poor ventilation can contribute to moisture buildup and mold growth. Make sure the machine is not placed in a tight or enclosed space.

Producing thin or hollow ice : If your Manitowoc commercial ice machine is not making ice or producing thin or hollow ice cubes, the following factors could be the cause:

Water Supply: Insufficient water flow or low water pressure can lead to the formation of thin or hollow ice cubes. Check the water supply and ensure proper pressure.

Water Inlet Valve: If the water inlet valve is not opening fully or is clogged, it can restrict the flow of water into the machine, resulting in thin ice cubes. Clean or replace the valve as needed.

Water Distribution Tube: The water distribution tube may be clogged or misaligned, leading to uneven water distribution and thin ice formation. Clean or adjust the tube if necessary.

Water Level: Ensure that the water level is correct within the machine. Adjust the water level sensor if needed, following the manufacturer's instructions.

Leaking water outside the machine : If your Manitowoc commercial ice maker is leaking water outside the machine, there are a few possible causes:

Water Inlet Valve: Check the water inlet valve for any leaks or loose connections. Tighten any loose fittings or replace the valve if necessary.

Water Supply Line: Inspect the water supply line for any leaks or cracks. If you find any issues, replace the damaged line.

Drain Line: Ensure that the drain line is properly connected and not clogged. Clean or clear any obstructions in the drain line.

Ice Bin: If the manitowoc ice bin is overfilled or not aligned properly, it can cause water to overflow and leak outside the machine. Adjust the ice level or realign the bin to prevent leaks.

Ice thickness probe issues on ice machine : If you're experiencing problems with the ice thickness probe on your Manitowoc ice machine, consider the following troubleshooting steps:

Calibration: Ensure that the ice thickness probe is calibrated correctly. Follow the manufacturer's instructions to adjust the probe to the desired ice thickness.

Cleanliness: Check if the ice thickness probe is clean and free from any debris or mineral buildup. To prevent mineral buildup and scale on an ice machine clean the probe using a soft cloth or brush, and if necessary, a Manitowoc-approved cleaner.

Alignment: Verify that the ice thickness probe is properly aligned with the evaporator plate. Adjust the position of the probe if it is not in the correct location.

Sensor Condition: Inspect the ice thickness probe for any signs of damage or wear. If the probe is damaged, replace it with a new one following the manufacturer's instructions.

Hope these extensive tips on troubleshooting manitowoc ice machine will help you find the cause for malfunctioning.

How To Keep Manitowoc Ice Machine On Off Mode?

Simply unplugging the Manitowoc ice machine is the best way to turn it off if you are able. If you are unable to unhook the ice machine, the next best option is to locate the breaker that your ice machine is connected to and flip it to the "off" position. If neither of these alternatives is available, please proceed with the steps below.

Unscrew the (1) top and (1) bottom screws of the Manitowoc front panel using a Phillips-head screwdriver to open the front panel of your ice machine. The door is about to swing open. Take care not to lose the screws, as they are required to secure the front panel. Three buttons will be located at the top of the display panel. The power button is located on the far left. Hold down the power button until the unit turns off. When the unit is turned off, the screen becomes blank. Please close the machine's front door and replace the two screws that secure the front panel.

How to turn on Manitowoc ice machine?

To restart the Manitowoc ice machine, simply plug it back into the outlet or reset the breaker. Otherwise, follow the steps below.
As previously described, turn on the ice machine. Hold down the power button until the machine turns on. The screen will turn on after the unit is turned on. Please close the machine's front door and replace the two screws that secure the front panel.

Is Your Manitowoc Indigo Ice Machine Stuck In Off Mode? 

If the Manitowoc Indigo ice machine is stuck in off mode, restarting it will solve the problem. Start by holding down the power button for 3 seconds. Then, wait until the ice on the evaporator melts. Turn off the ice machine for 10 seconds. When you turn it on, you'll notice a blue light, indicating that the reset was successful.

Preventative & Maintenance Tips

When it comes to keeping your Manitowoc ice machines running smoothly, preventative maintenance is key. By taking proactive steps to care for and maintain your equipment, you can avoid costly breakdowns and ensure that your ice machines continue to produce clean and refreshing ice. Let us look at some of the maintain tips:

1. Clean the Ice Machine Regularly

Regular cleaning is a fundamental aspect of preventative maintenance. To ensure hygienic ice production and prevent the buildup of dirt and scaleclean the ice machine regularly. Here are the steps on how to clean Manitowoc ice machine regularly:

  • Begin by unplugging the machine and shutting off the water supply.
  • Empty the manitowoc ice bin and discard any remaining ice.
  • Use a mild, non-abrasive cleaner to wipe down the interior and exterior surfaces of the machine, including the ice bin and ice-making components.
  • Pay special attention to the evaporator plate, water trough, and water distribution tube. Clean these areas thoroughly to remove any mineral deposits or scale buildup.
  • Rinse all surfaces with clean water and dry them with a soft cloth.
  • Once the machine is dry, plug it back in and restart the water supply.
  • Dispose of the first batch of ice produced after cleaning to ensure freshness.

2. Inspect and Replace Water Filters

Clean water is vital for producing high-quality ice. Regularly inspect the water filters and replace them as recommended by the manufacturer. This will prevent contaminants from entering the ice-making system and ensure that your ice remains pure and free from any off-flavors or odors.

3. Check and Clean the Condenser

The condenser is responsible for dissipating heat from the ice machine. If it becomes clogged with dust and debris, it can impede the cooling process and strain the machine. Follow these steps to maintain a clean condenser:

  • Turn off the machine and unplug it from the power source.
  • Locate the condenser unit, typically located on the back or side of the ice machine.
  • Use a soft brush or vacuum cleaner to remove dust and debris from the condenser fins. Be gentle to avoid damaging the delicate fins.
  • Once the condenser is clean, plug the machine back in and restart it.

4. Monitor Ice Production and Quality

Regularly monitor the ice production and quality to identify any potential issues early on. Keep an eye out for:

  • Reduced ice production
  • Thin or misshapen ice cubes
  • Unusual noises during the ice-making process
  • Off-flavors or odors in the ice

If you notice any of these signs, it may indicate a problem that requires attention. Addressing issues promptly can help prevent further damage and ensure continuous ice production.

5. Schedule Professional Maintenance

While regular cleaning and inspections can go a long way in preventing issues, it's also essential to schedule professional maintenance for your Manitowoc ice machines. A professional technician will have the expertise to perform in-depth checks, address any underlying problems, and provide specialized care for your equipment. Consider setting up a maintenance schedule with a reputable service provider to ensure your machines receive the attention they need.

Troubleshooting your Manitowoc ice machine can save you time and money by identifying and resolving issues before they become major problems. By following the steps outlined in this guide, you can quickly and easily diagnose and fix common issues. Remember to always refer to yourManitowoc ice machine service manual for specific instructions and to take safety precautions when working with electrical or mechanical components. 

FAQs

How long do Manitowoc ice machines last?

Manitowoc ice machines can typically last between 10 to 20 years, depending on usage, maintenance, and environmental factors.

What is the Manitowoc ice machine price?

The price range for Manitowoc ice machines can start from around $2,000 for smaller models with basic features and can go up to $20,000 or more for larger, high-capacity machines with advanced features and accessories.

What is the common reason the ice maker not working?

A common reason for an ice maker not working is a clogged water line or inlet valve, which can be caused by mineral deposits or a malfunctioning component.

How long is the Manitowoc freeze cycle?

The ice machine freezing up typically ranges from 15 to 20 minutes, but it can vary depending on the specific model and ice production capacity.

How to service a Manitowoc ice machine?

To service a Manitowoc ice machine, it is recommended to follow the manufacturer's guidelines, which generally involve regular cleaning, descaling, and inspecting key components like the evaporator, water system, and condenser. Professional assistance may be required for more complex maintenance tasks.