If you are one of the many Chicago businesses that rely on a Hoshizaki commercial ice maker for ice, you’ll want to keep it in the best condition. That’s Hoshizaki has developed a coded system within the ice machine to alert users and technicians to potential problems in the machine. If your Hoshizaki ice machine is beeping, it’s trying to tell you something is wrong. In many instances, the ice machine will shut down into a safety mode to prevent further damage.
In this article, we’ll discuss how to decode a Hoshizaki beep alarm, so you know what’s going on inside your ice machine.
The Different Types of Hoshizaki Beep Alarms
Standard Hoshizaki ice makers have seven different alarms that alert users to potential problems. Each alarm beeps a corresponding amount of times, pauses for three seconds, and signals the beeps again. For instance, a Hoshizaki two-beep code will beep twice, pause for three seconds, then beep twice again. This continues until the machine is shut off or the issue is addressed.
We could go over all the Hoshizaki beep alarms, however instead, we’ll focus on the most common types of beep alarms, one through three.
For reference, here are the seven Hoshizaki beep alarms and their causes:
- 1 Beep – High temperature measured at the evaporator outlet.
- 2 Beep – Long Harvest Cycle
- 3 Beep – Long Freeze Cycle
- 4 Beep – Shorted Circuit on Mechanical Bin Sensor
- 5 Beep – Open Circuit on Mechanical Bin Sensor
- 6 Beep – Low Voltage supplied to Machine
- 7 Beep – High Voltage Supplied to Machine
Why is My Hoshizaki Ice Machine Beeping Once?
A Hoshizaki single beep alarm occurs when the thermistor reaches 127 degrees Fahrenheit. This typically signifies that some issue is causing the commercial ice maker to overheat. When a Hoshizaki one-beep alarm sounds, the ice machine will shut off to prevent further damage to the unit.
While this will protect your ice machine from further damage, it will also halt your ice production. If you run a Chicago business that encounters one of these alarms, it’s best to get the issue resolved immediately. If your ice maker is not making ice, buying backup ice from a store can cost a considerable amount of money over a few days.
There are many causes of a Hoshizaki single beep alarm, some include:
- Hot water entering the ice machine
- Water not reaching the ice machine
- Issues with the hot gas valve
The majority of the time, hot water entering your ice machine is the cause. This can be due to an exceptionally hot summer, water heating up from a nearby heat-producing appliance like an oven, or water migrating from another appliance such as a dishwasher.
If you encounter this code, you should shut the ice machine down and call a Chicago ice machine technician right away.
Why is My Hoshizaki Ice Machine Beeping Twice?
When you hear a Hoshizaki 2 beep alarm, it’s because the machine has encountered two extended harvest cycles in a row.
When a Hoshizaki ice maker begins its harvest cycle, the ice machine’s control board starts a 20-minute timer. Within that 20 minutes, the ice machine’s thermistor (the same mechanism we mentioned above) must register 48 degrees.
If the thermistor does not reach 48 degrees within 20 minutes, the harvest cycle fails to end, and the machine begins the freeze cycle, starting the ice making process over again. If the ice machine encounters another extended harvest cycle, the high volume ice machine shuts down and starts a 2-beep alarm.
Some causes of a Hoshizaki two-beep alarm include:
- Ice machine freeze ups due to:
- Dirty plates
- Warped/Bent/Damaged Plates
- Not enough water flow available to your ice machine
- Cold ambient air temperature
- Cold ambient water temperature
- Low Temperatures (common during Chicago winters)
- No Water Going to the Machine
Like all Hoshizaki beeps codes, the best thing you can do is shut off the ice machine and call a qualified ice machine service in Chicago as soon as you can.
Why is My Hoshizaki Ice Machine Beeping Three Times?
A Hoshizaki ice machine three-beep code similar to a two-beep alarm, except the machine has encountered two elongated freeze cycles in a row.
The freeze cycle is the stage when an ice machine starts to flow water a cold evaporator plate. Over time, the water freezes and becomes ice. The length of the freeze cycle depends on air and water temperatures and how much water in your ice machine’s reservoir.
As the water flows and empties the reservoir, the ice maker’s float switch falls. The machine times this process. If the float switch reaches its low point by the time the timer has ended, it signals the end of the freeze cycle and starts the harvest cycle, where ice is collected.
An “elongated” freeze cycle is what happens when an issue slows this process down, keeping the ice machine in its freeze cycle for too long.
Here are just some of the causes of a Hoshizaki three-beep code:
- Clogged check valves
- Ice maker is leaking
- A hot gas valve stuck open
- A low amount of refrigerant in the system
Problems caused by improper care:
- Dirty air filters
- Dirty Condensers
- Overly hot temperatures
- Lack of ventilation
Here are a few things a Chicago business can do if their Hoshizaki ice machine is beeping 3 times.
If you have an air cooled ice machine, check to see if dirt is clogging your air filter. If so, rinse the filter with soap and water and reset your ice maker.
If your ice machine is in an overly hot room (especially over 90 degrees Fahrenheit), lower the thermostat on your air-conditioning unit. Industrial ice machines work best in environments around 70 degrees.
Make sure your ice machine is getting proper ventilation. Move any clutter away from the high volume ice machine. If the machine is in a small room, open the door and use a fan to move the hot air away from the unit.
If none of these tips prevent your machine from shutting down, you should call a professional. It could be an issue with your plumbing or inside the ice maker itself.
A Good Technician Can Diagnose Problems Quickly
Quick, professional service can save you money. The faster a technician can solve an issue, the less you’ll pay in labor and time. If you go with a standard refrigeration tech, they’re likely not familiar with identifying issues with Hoshizaki ice machines. Each brand of commercial ice equipment is different, for instance, Manitowoc ice machines use a series of error codes to identify potential issues. The more time a technician takes to fix an ice machine, the more you pay in labor and replacement ice.
At Automatic Icemakers, we’ve been servicing commercial ice machines in the Chicago area since 1961. Our technicians understand how to fix ice machines from the leading manufacturers in the industry, like Hoshizaki and Manitowoc. You can also choose one of our all-inclusive ice machine leases, which makes taking care of an ice machine even easier for Chicago business owners. We handle Hoshizaki ice machine cleaning, preventive maintenance, and cover all ice machine repairs for a low, monthly charge.