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

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Hoshizaki km-515mah is not turning on, no power on LED on the circuit board, checked cleaning valve too, still no power, there is power at the outlet

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Check the fuse

Posted on Sep 11, 2010

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1 Answer

Where is the reset button on a hoshizaki KM-450MWB


Its mounted on the circuit board. Turn power off before you attempt your search. Good luck hope it helps.

Oct 09, 2014 | Freezers

2 Answers

Hoshizaki km-900mah not going into harvest when float switch opens. New circuit board installed still no harvest. I can set an egg timer and manually operate machine but I can't leave it unattended...


Hoshizaki machines must have a very clean evaporater other wise the ice will bind causing a slow harvest. This may be from lime scale build up. "Lime A Way" is recommended for this proper cleaning. After that is done check to see that the water inlet valve screen is clean and that you have a filter installed.
Last check the thermister attached to the suction line.
http://www.hoshizakiamerica.com/techtips/Pdf/All/tips105.pdf

Aug 01, 2011 | Hoshizaki Freezer Commercial Ice Machines...

2 Answers

KM-500-MAE Hoshizaki Problem huge cubes, alarm code three beeps


Might need to clean float switch, or water inlet valve bypassing water. Deep clean Hoshizaki.

Sep 30, 2010 | Hoshizaki Commercial Freezer KM-500MAH

2 Answers

ICE MAKER WILL NOT MAKE ICE


Check for power supplied to unit.

Check that the bin stat has not been broken and has no ice sitting on it. If the bin stat is clean and doesn't appear to be broken, you can attempt to jump out the bin stat and see if the machine comes on.

If the machine comes on, replace the bin stat. If the machine does not come on and you have shut the machine off and back on, then you will need to call for service.

The check valve is a common issue with the Hoshi line-up. If you know where this is, take it apart, clean it, and re-install it.


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

2 Answers

Ice Machine with No Power


First make sure that the cleaning valve is closed, this is the White wing nut looking handle on the side wall under the inlet water valve. This handle has to be in the closed position which is horizontal to the base it closes a micro-switch. If the handle is loose turn the power switch to Ice have the handle in the open position and feel with your finger behind where the handle closes and push the micro-switch in manually and hold for a few seconds and see if the Power OK light comes on on the control board in the control box.

If this doesn't work pleas call us at 1-800-233-1940

Jun 19, 2009 | Hoshizaki Commercial Freezer KM-500MAH

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

1 Answer

Hoshizaki ice machine with constant beeping every 2 seconds


turn it off and on and check the drain line and see if its draining water. some times the check valve needs taken apart and cleaned. the problems corespond to water related problems. usually because its taking too long to freeze. good luck

Dec 27, 2008 | Hoshizaki Commercial Freezer KM-500MAH

5 Answers

Beeping Ice Machine


I have a Hoshizaki KM-250BAF that is making 3 beeps then pauses and them makes 3 beeps again. If I unplug the ice maker and plug it in it continues to make the 3 beeps. The manual does not mention anything about beeps. Can anyone help?

Jul 09, 2008 | Hoshizaki Freezer Commercial Ice Machines...

3 Answers

Hoshizaki Ice Machine Model KM-500MAF


(Quated From Hoshizaki Technical Bulletin)
An alarm code of 3 beeps
every 3 seconds means that the control board has shut
down on the 60 minute freeze cycle back up timer.

The “E” control board has a 60 minute timer that starts at
the beginning of the freeze cycle. If the float switch fails
to open and start the next harvest within 60 minutes, the
board will automatically start the harvest cycle. If this
occurs in two consecutive cycles, the control board will
shut the unit down on the manual reset, freeze cycle
back- up timer. The yellow fault LED marked “60 min.”
will illuminate. This safety is designed to help prevent a
freeze up of the evaporator.

Once you have identified the 60 minute alarm, there are
several things to check. Reset the alarm by depressing
the white reset button to the right of the fault LED’s.
This must be done with the power “ON”. Now check the
float switch to see if it is stuck in the up position. A stuck
float can occur if scale is present on the reed switch
shaft inside the housing. To check it, drain the water
reservoir, unplug the black float switch connector (K5)
from the control board and check it with an ohm meter
for a closed switch (zero ohms). If the float switch is
sticking, clean it with ice machine cleaner or replace it as
necessary.
An inlet water valve which is slowly leaking by during the
freeze cycle can cause a 60 minute alarm. If the inlet
water valve is stuck wide open, it is unlikely that any ice
will form on the evaporator. Check for a slow leak by
allowing the unit to cycle into the freeze cycle and
disconnecting the hose at the outlet of the water valve. If
water leaks by during the freeze cycle, the water valve
diaphragm is likely damaged or the small diaphragm bleed
port is clogged with scale. Clean the bleed port or replace
the diaphragm or entire water valve as necessary.

(I Recommend to get a refrigeration tech for this part).

Another possibility is a refrigeration system problem. You
should use normal refrigeration diagnosis procedures to
check for one of these problems. If the thermostatic
expansion valve is not feeding properly or the refrigerant
charge is low, the evaporator will not form ice as it should
and a long freeze cycle will occur. This could also be the
result of the hot gas valve not closing completely during
the freeze cycle or if the compressor valves are weak or
inefficient. An inefficient compressor however, will
usually show up first on the KM model through a longer
than normal harvest cycle. This is because of cooler
than normal discharge gas. Use proper refrigeration
practices to repair a refrigeration system problem.
While these are not the only reasons for a 60 minute
freeze cycle, they are the most common and should be
checked to resolve a 3 beep/yellow fault LED alarm.

Feb 27, 2008 | Hoshizaki Commercial Freezer KM-500MAH

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