Question about Hoshizaki Freezer Commercial Ice Machines - KM900MRH Commercial Ice Machine

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Water runs constantly

We have a Hoshizaki Ice Maker (KM- 800) and it wants to constantly run water and is making some ice. Its as if the water is not shutting of during the freeze cycle. What do I need to do to take care of this problem and what would be the steps of doing it. Thank you for your help.

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Update on the above! The water does shut off, but when the water is running it runs and splashes for awhile down all over the ice thats in there. Water bill is very high when it is in use.

Posted on Apr 14, 2008

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2 Answers

I worked on a hoshizaki km-500mae when i turn it on the first cycle it makes good ice but after the first cycle it makes little pieces. why?


time the cycle. if it is only running about 5 minutes and going into harvest, look for sump loosing water. Look at where the unit drains (like a floor drain) while the unit is running to see how much, if any water is draining. does not take much to make an early harvest. also, sump may not be filling up completely but with just enough water to satisfy the float.

Feb 16, 2015 | Hoshizaki Freezer Commercial Ice Machines...

1 Answer

My Ice maker doesn't make ice anymore


90% of ice maker problems are water related. Sounds like water may be continually seeping in from the inlet water valve (normal thing to do if the water level is low). This will not allow the water to get down to freezing temperature. You have to identify the reason that water is constantly running in. It's probably "leaking" out at the dump valve. Or does that unit have a float valve that may be leaking. Check your drain to see if water is leaking out during the freeze cycle.

Jul 07, 2014 | Hoshizaki Freezer Commercial Ice Machines...

2 Answers

Hoshizaki km - 280 mah ice maker not making enough ice


A few simple things to check is the condenser for dust. Blow it out. If their is a water filter going into the unit change it. Get some ice machine cleaner and follow directions. Do these things before calling anyone out.

Aug 12, 2012 | Hoshizaki Freezer Commercial Ice Machines...

1 Answer

Hoshizaki km-900mah ice maker won't start the freeze process


cycle is, fill cycle for 1 minute first. If there is not water entering the unit when first turned on, look for that issue. Water turned off, water valve not working or some restriction, clogged water filters, etc. That is got to happen first. Don't over look the bin stat being bad. Nothing happens if teh bin stat is bad. It sends voltage to the control board that runs the unit.

Jul 28, 2012 | Hoshizaki Freezer Commercial Ice Machines...

1 Answer

Hoshizaki Model KM 630 MAE


Look for a stuck float switch. unit fills with water for 1 minute, then the board "looks" at the float to "see" if there is enough water in the unit to run. If float switch is stuck down, it tells the unit there is not enough water and the unit stays in the fill cycle causing the sump to overflow and send water down the drain constantly. Compressor will not run till the board senses that there is enough water to run.

Jun 25, 2012 | Hoshizaki Freezer Commercial Ice Machines...

1 Answer

Hoshizaki KM-900MAH Ice Maker it sounds like it is making ice and is freezing it but its not dropping ice any solutions?


when the machine first starts, it begins it's cycle in the harvest mode. If the float switch is stuck, it stays in the fill/ harvest mode. Compressor runs and water circulates but no ice is being made. I'd start looking there. Turn the machine on, let it run for about 3 minutes, they very lightly tap the float switch. If it starts making ice, bingo, theres your problem. Let me know if I can be of any more help.

May 12, 2010 | Hoshizaki Freezer Commercial Ice Machines...

2 Answers

Hoshizaki KM-900MAH Ice Maker it sounds like it is making ice and is freezing it but its not dropping ice any solutions?


Do you hear the machine cycling like normal but just not dropping? Could be the hot gas solenoid. If you never hear it trying to drop that could be anything from a dirty condenser to dirty plates to bad ice thickness control. Run some ice machine cleaner through it and blow the condenser out.

Mar 20, 2010 | Hoshizaki Freezer Commercial Ice Machines...

1 Answer

I have a hoshizaki km-250bwf and it the comprsser


Check the control board for a "output" test switch.
If it is "ON",turn it off.

Nov 19, 2009 | Hoshizaki Freezer Commercial Ice Machines...

1 Answer

Hoshizaki ice machine model KM-450MAB water runs constantly even on freeze cycle. Water is very cold.


Hoshizaki machines have a water inlet valve that can stick in the open position. This will cause the machine to do silly things. If you can turn the machine off and you can still hear water running, the valve is stuck open. It is an easy fix. Water valve only has 2 wires going to it and 2 water lines. One inlet and one outlet. Just turn off water and kill power at the breaker before doing any work.

Hope this helps and good luck.

Try Rick and Restaurant Parts and More in Ohio for a replacement valve. 1-888-814-1110

Apr 01, 2009 | Hoshizaki Commercial Freezer KM-500MAH

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Hoshizaki KM-500MAH not making ice


Look at water solenoid valve when the unit is running in ice mode. Check to see if the water is shuting off completely. If the water valve does not close properly it will keep adding a little bit warm water to the ice a slow down the ice production.

Sep 21, 2007 | Hoshizaki Commercial Freezer KM-500MAH

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