HVACR: Hoshizaki Ice Maker Keeps Running Water (Hoshizaki Ice Maker Water Wont Stop Running) Fix

Introduction

This tutorial provides a step-by-step guide on troubleshooting and fixing a Hoshizaki ice maker that continues to run water without stopping. If your ice maker is not functioning properly, following these steps can help you identify and resolve the issue efficiently.

Step 1: Assess the Water Supply

• Check the water source: Ensure that the water supply to the ice maker is connected and turned on.
• Inspect for leaks: Look for any visible leaks in the supply line which might cause continuous water flow.
• Test the water inlet valve: Verify that the valve is functioning correctly. A faulty valve can cause water to continuously flow into the machine.

Step 2: Inspect the Float Switch

• Locate the float switch: This component helps control the water level in the ice maker.
• Examine the float: Make sure the float moves freely and is not stuck. If it is stuck in the "up" position, it may signal the machine to keep filling.
• Clean the float switch: Dirt or mineral buildup can hinder its operation. Clean it gently to ensure it functions properly.

Step 3: Check the Control Board

• Access the control board: Open the panel of your ice maker to reach the control board.
• Look for error codes: If your model has a digital display, check for any error codes that could indicate a malfunction.
• Reset the control board: Sometimes, a simple reset can resolve issues. Disconnect the power for a few minutes and then reconnect it.

Step 4: Evaluate the Thermal Expansion Valve

• Identify the thermal expansion valve (TXV): This component regulates the flow of refrigerant to the evaporator.
• Inspect for blockage: A clogged TXV can affect the ice maker's operation. Ensure it’s not blocked or damaged.
• Replace if necessary: If the TXV is defective, consider replacing it. Follow these steps for installation:
  • Disconnect the power and water supply.
  • Remove the old TXV.
  • Install the new TXV and reconnect everything securely.

Step 5: Perform Regular Maintenance

• Deep clean the ice maker: Regular cleaning can prevent many issues. Follow the manufacturer’s instructions for deep cleaning your unit.
• Schedule preventive maintenance: Create a maintenance schedule to check the water supply, float switch, and other components regularly.

Conclusion

By following these steps, you can troubleshoot and fix a Hoshizaki ice maker that is continuously running water. Always start with the simplest solutions, such as checking the water supply and float switch, before moving on to more complex components like the control board or TXV. Regular maintenance is key to ensuring your ice maker operates efficiently. If issues persist, consider contacting a professional for assistance.