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

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Hoshizaki ice machine repair?

I cleaned the ice machine with cleaner and cleaned the coils now it seams to be short cycling only gets cold enough to just about freeze and then goes into defrost before making any ice ?

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  • Anonymous Nov 21, 2008

    it do

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Seems that its low on water or float switch is bad. try to clean float

Posted on Oct 09, 2015

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Is water pump running? is sufficient water in the sump? they harvest when the harvest thermistor says lines are cold. lack of water and the thermistor gets to cold to quick and a premature harvest. no water or pump over plate and it gets to cold to quick. the water over the plate keeps temps up till ice can form. good luck.

Posted on Oct 30, 2008

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1 Answer

Does not get cold enough


If refrigerant charge is ok, make sure that the evaporator coil is not covered with ice. The latter serves as an insulator and will keep unit from achieving designed low temps. Remove ice by defrosting unit manually and then restarting unit. If ice continues to build up at alarming rate check for the tightness of door gaskets. If lots of moisture gets into unit, it will collect and freeze on coil. Also check to see that the defrost timer is not going on excessively. Those defrost cycles can raise internal temps by as much as 25 degrees; if the cycles come on prematurely and/or very often internal temps will be high.

Nov 16, 2013 | Kelvinator Freezers

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

Check valve


If you are asking about the valve to the left of the water pump, it is used to dump water when the unit pumps the water out of the sump to keep sediment out. If it is bad, the unit will have short freeze cycles as the the valve is leaking water out causing the float to drop prematurely and causing small cubes and short freeze cycles.

May 11, 2012 | Hoshizaki Freezer Commercial Ice Machines...

2 Answers

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


Check condenser coil which is the coil on back with fins, sometimes with metal.mesh filter. If dirty or clogged up clean filter, blow out with air or brush and rinse out, careful not to bend fins. Sounds like issue to me. Unless the dump valve may be leaking by

May 18, 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...

2 Answers

Ice machine is only making flakey size ice. Machine is clean and filters have been changed. Water is flowing and cold; it appears that the machine is in constant operation.


sounds like there is a problem with the water in the sump escaping. Sometimes, the plastic grate under the evap plates break and pieces get stuck in the dump valve. It is a triangular piece that the pump attaches to via a hose. It is spring loaded and the pieces prevent it from seating, thus, water leaks into the drain that you will not notice. When the water level in the sump gets low enough, it goes into a harvest and drops small slivers of ice. I'd check that out first.
Hope this helps.

Feb 09, 2010 | Hoshizaki Freezer Commercial Ice Machines...

1 Answer

Short defrost cycle so some ice still on the evap and start new cycle so after some time lots of ice on coil


The defrost cycle is a set time. I would suggest cleaning the evaporator so it has less chance to hang up in the trays.

Feb 08, 2010 | Hoshizaki Freezer Commercial Ice Machines...

1 Answer

COMPRESSOR WILL FREEZE A CYCLE OR 2 THEN STOP WORKING


a symptom of low refrigerrant is that the evaporator coil will develop a small very cold area but wont cool the entire surface .. that cold area can ice up and block air flow .. the result can be an overworked compressor with little or no cooling ... other things that can cause the same trouble
1. bad or blocked air flow on the external coils or condenser fan ..
2. a leak in the door seal will allow moisture that can cause icing

if there is icing then you can turn it off with the door open until the ice melts .. then start over ..

Jul 24, 2009 | Freezers

2 Answers

My ice machine does not make enough ice


Check the water filters first. Then check the condenser coils for dust and dirt. Determine which way the air goes thru the condenser coils and check on the side the air goes into. There are coil cleaning sprays that work good. If it is still slow, it may need gas. That will require a service call from a technician.

May 05, 2009 | Hoshizaki Freezer Commercial Ice Machines...

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