Hoshizaki Freezer Commercial Ice Machines - KM900MRH Commercial Ice Machine Logo

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Posted on Aug 01, 2011
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I have a Hoshizaki KM900MRH ice maker. It will run fine for a couple days then shut off and beep 3 times within 3 seconds. I am told by tech support that it could be a float switch. Where is the float switch located. The machine and condensor has recently been taken apart, cleaned, new hoses installed and the system evacuated and re-charged with freon.

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Dennis Boxerman

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  • Hoshizaki Master 1,306 Answers
  • Posted on Jun 17, 2017
Dennis Boxerman
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Float switch is usually a white plastic unit with a black rubber boot on the bottom. you need to drain the water out of the sump before doing anything with the float.

3 Related Answers

Anonymous

  • 1 Answer
  • Posted on Jun 20, 2008

SOURCE: Hoshizaki Freezer Commercial Ice Machines - KM900MRH

have you checked the bin switch or the float?

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Anonymous

  • 340 Answers
  • Posted on Jun 28, 2009

SOURCE: hoshizaki condensor fan motor is not working

Too long to explain sequence here. but in the harvest mode the fan will not be running. go to hoshizaki.com you will find every thing you need very helpful site . and a clean machine is a happy machine. hope that helps Tom

Anonymous

  • 117 Answers
  • Posted on May 21, 2010

SOURCE: Freezer Commercial Ice Machines - KM900MRH Commercial Ice Machine: my hoshizaki under the counter ice machine gradual...

Check to be sure the check valve is not leaking by. This will cause reduced capacity as they are controlled from water level. Remove, clean, and re-install the check valve and check its operation.

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Related Questions:

0helpful
1answer

Hosizaki ice machne 3 beeps then after i reset it it runs for 7 seconds and shuts off?

the 3 beeps means that the freeze cycle is longer than 60 minutes. This could be because: float switch stuck, water valve leaking water into the sump, low on freon. If not one of those, it is a more technical issue that would require a service tech. Reset button is a small white button on the control board. Press it while the power is on to reset it.
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The ice maker make too much ice

Too much ice is usually and indication that the bin thermostat is not functioning correctly. It has either come out of it's holder, is not calibrated properly, or has lost it function and needs replacing. The thermostat "Kills" power to the control board when Ice comes in contact with it and shuts the machine down. Hoshizaki says it should happen within 6-10 seconds of ice contact after the end of a harvest cycle. I would start there first.
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Steady beeping on hoshizaki ice machine

You have a relay or starter going bad. It definitely needs servicing. I am assuming you have called tech. I would turn it off until you get it fixed even if it is still making ice. This may indicate something is seriously wrong or about ready to shut down.
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3 beep code on hoshizaki km630mae

Freeze cycle too long. Usually about an hour. Many things can cause this. Look for water running even when machine is off. Stuck float switch causes this. may need a tech to check things out.
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Beeping 3 times every few seconds

In the freeze cycle too long. Usually about an hour. Several conditions can cause this. look for stuck float or constant water running even when machine is off. start there first.
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Ice maker not making ice. When pressing the test button will start to make some and then beep about 3 times, then does not produce anymore ice.

Do not use test button. It test the functions of the board only. You have another issue. Need to know the number of beeps. Usually beeps a certain number of times, then hesitates,then beeps again.
0helpful
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Hoshizaki ice maker am-50bae . Made ice regularily--- filled ice bin half way...next day-- all ice melted away with no more new ice? next day shut off for 3 hours now o new ice.

make a few quick checks. If there are water filters on the system, be sure they are not restricked. Could be clogged. Next, check the bin stat. It usually is mounted in the ice bin. If it breaks or goes bad, it shuts down the machine. Start there and let me know if I can be of any further help.
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1answer

Beeps 2 times every 3 seconds

This is the safety telling you it is staying in defrost (Harvest) cycle for more than 20 minutes. In most cases it's either a low freon level or a back head pressure device commonly called a "Head Master". Needs to be checked out by a trained tech. Not a simple fix.
Hope this helps.
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