A Hoshizaki freezer not freezing can cause concern, mainly if you rely on it to keep your perishable items safe and fresh.
Understanding the reasons behind this issue and ways to troubleshoot it can help you quickly get your freezer back to its optimal performance.
Several factors can cause your Hoshizaki freezer to stop freezing, such as power issues, defective components, or control system concerns.
This article will explore these reasons and offer potential solutions to your freezer’s problems.
By becoming familiar with the common problems and troubleshooting steps, you’ll be better equipped to resolve issues when your Hoshizaki freezer isn’t freezing, ensuring your food and other perishables remain safe for consumption.
Why Is Your Hoshizaki Freezer Not Freezing?
There are several reasons why a Hoshizaki freezer may not be freezing correctly.
Common issues include problems with the evaporator coil, defrost timer, evaporator plates, internal temperatures, control board, dirty condenser coils, water valve, defrost cycle, faulty thermostat, electronic control panel, and control setpoint range.
1. Evaporator Coil Issues
The evaporator coil is responsible for absorbing heat from the air inside the freezer.
When the coil is not working correctly or is damaged, it could cause the freezer not to freeze effectively.
It’s essential to clean the coil regularly to maintain optimal performance and efficiency.
2. Defrost Timer Malfunction
The defrost timer regulates the defrost cycle in your freezer.
If there’s an issue with the timer, the freezer may not maintain the proper temperature, causing it not to freeze properly.
Replacing a defrost timer can resolve this issue.
3. Dirty Evaporator Plates
Dirty evaporator plates can decrease efficiency in heat transfer, leading to a drop in internal temperature.
Regularly cleaning the plates can prevent this issue and keep your freezer operating effectively.
4. Inaccurate Internal Temperatures
If the freezer’s internal temperature is not set correctly, it could lead to insufficient cooling.
Check the control board to ensure that the setpoint is within the appropriate range for your specific model of the Hoshizaki freezer.
5. Control Board Issues
A malfunctioning control board may cause different freezer components not to work correctly.
If you suspect the control board is the issue, consult a technician to inspect and possibly replace the board.
6. Dirty Condenser Coils
Dirty condenser coils can decrease heat transfer efficiency, leading to a drop in the freezing capacity of the freezer.
Cleaning the coils regularly can help maintain optimal performance.
7. Water Valve Problems
For Hoshizaki ice makers, a faulty water valve can cause the freezing process to be hindered.
If the water valve is not allowing enough water into the system, it can lead to incomplete freezing.
Inspect the valve and replace it if necessary.
8. Defrost Cycle Issues
If the defrost cycle is not functioning correctly, it could cause the freezer’s internal temperature to be too high, preventing proper freezing.
Check the defrost timer and thermostat to ensure they are functioning properly.
9. Faulty Thermostat
A faulty thermostat may not accurately regulate the freezer’s temperature, leading to insufficient freezing.
Replacing a thermostat can resolve this issue and maintain accurate temperature control.
10. Electronic Control Panel Malfunction
An issue with the electronic control panel could affect different components and their functions, causing the freezer not to freeze properly.
If you suspect the control panel is the problem, consult a professional technician to inspect and possibly replace the panel.
By addressing these potential issues, you can ensure your Hoshizaki freezer maintains its ability to freeze effectively and efficiently.
How to Fix a Hoshizaki Freezer Not Freezing
A Hoshizaki freezer is known for its precise temperature control and reliable performance.
However, like any other commercial equipment, it could experience some issues.
If your Hoshizaki freezer is not freezing, here are some possible solutions.
1. Check the Freeze Cycles
Your Hoshizaki freezer may have a problem with its freeze cycles.
This can cause the evaporator section to freeze solid.
After thawing it, inspect if the evaporators are dirty or if mineral deposits are causing the issue.
You can clean the evaporators to ensure proper freeze cycles.
Remember to watch the DIP switches 9 & 10, which determine the length of the maximum freeze cycle.
2. Inspect the Refrigerant Charge
Refrigerant is essential for maintaining the required temperature within your freezer.
If your freezer is not freezing, it could be due to an insufficient refrigerant charge.
It is best to have a certified technician inspect and recharge your refrigerant.
3. Check the Defrost Heater
A malfunctioning defrost heater can cause your freezer to underperform.
Inspect the heater for any visible damage or signs of wear.
Use an ohm meter to test the continuity of the defrost heater.
If it is not functioning properly, consider replacing it.
4. Examine the Evaporator Fan Motor
The evaporator fan motor is responsible for circulating cold air throughout the freezer.
Check the fan motor for any signs of malfunction or damage.
You may need to replace the fan motor if it fails to operate as expected.
5. Assess the Control Module
The control module is responsible for coordinating various components in your Hoshizaki freezer.
The freezer may fail to maintain the desired temperature if it is not functioning properly.
Consult your owner’s manual for instructions on how to access and test your control module.
If the module is faulty, you may need to replace it.
Remember, always consult your owner’s manual or contact a professional technician for assistance if you are unsure about any of these procedures.
Not only will this prevent further issues, but it also ensures your Hoshizaki freezer remains in top condition.
How to Prevent the Problem
To prevent your Hoshizaki freezer from freezing, you can take several steps to ensure your unit’s optimal performance.
Properly maintaining your freezer can avoid common issues and keep your food items frozen at the right temperature.
1. Keep the freezer clean
Regularly clean the interior and exterior of your freezer, paying special attention to the condenser coils.
Use a coil brush to gently remove any dust or debris that may have accumulated.
This helps maintain the efficiency of your unit.
2. Inspect coil connections
Ensure that all connections to the coils are tight and secure.
Loose connections can lead to poor performance and cause your freezer not to freeze properly.
3. Monitor food item placement
Be cautious about the placement of food items inside your freezer.
Overloading the unit or blocking the air vents with large blocks of ice can restrict airflow and negatively impact freezing capabilities.
4. Perform control board checks
Regularly inspect the control board of your Hoshizaki Cap Tube freezer for any signs of damage or wear.
This can help prevent issues with your unit’s performance, including problems with freezing.
5. Check the hot gas valve
The hot gas valve is a crucial component in the defrost cycle of your freezer.
It should be inspected for any loose connections or damage that may prevent it from functioning correctly.
6. Maintain temperature settings
Ensure that the temperature settings of your freezer are appropriately set.
If the settings are too high, your freezer may not be able to maintain the desired freezing temperature.
7. Monitor door seals
Inspect the door seals for any signs of wear or damage.
A compromised seal can allow warm air to enter the freezer, making it difficult for the unit to maintain freezing temperatures.
By following these simple steps, you can prevent common issues with your Hoshizaki freezer and ensure that it remains efficient in its freezing performance.
Regular maintenance and checks are vital to keeping your unit operating at its best and preventing problems from recurring.
Adrian is an ISCET licensed professional that has completed the National Appliance Service Technician Certification Exam and has the expertise to diagnose and repair any appliance. He is well-versed in the latest technologies and techniques and is always up-to-date on the latest industry standards.
