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Hoshizaki ice machine will not power up - Hoshizaki Freezers

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  • Hoshizaki Master
  • 1,150 Answers

With not model or serial numbers, I can only suggest that it may very well be the "bin stat". This is a thermostat that has a sensing bulb that is in the bin and senses the ice when it touches it to shut down the machine. If this is bad, no power goes to the control board. Try jumping this out with a jumper wire and see if the machine comes on.

Posted on Feb 11, 2017

  • Dennis Boxerman Feb 11, 2017

    Check "Bin Stat". Power goes to the board thru this thermostat. It is in the control box.

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6 Suggested Answers

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Posted on Jan 02, 2017

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refritech08
  • 149 Answers

SOURCE: 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.

Posted on Apr 26, 2008

  • 1 Answer

SOURCE: 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?

Posted on Aug 29, 2008

tborn6
  • 700 Answers

SOURCE: 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

Posted on Dec 27, 2008

  • 488 Answers

SOURCE: HOSHIZAKI that wont stop making ice

Bin Thermostat does not work

Posted on Oct 09, 2015

  • 488 Answers

SOURCE: hoshizaki ice machine repair?

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

Posted on Oct 09, 2015

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Hi .my hoshizaki ice machine it till running but do not make ice . Can you tell me , what wrong with the machine ? Thank you


The machine, all in one, not indoor/outdoor split type, will make beeping sound when something is wrong and stops working until it is turned off and turned back on. Some times the machine needs to be reset with the power on, covers removed, reset button inside on electronic mother board.
The ice machine covers have instructions and information on beeping sounds.

Aug 27, 2017 | Hoshizaki Freezers

1 Answer

Why did my hoshizaki ice machine stopped making ice?


bin stat is what is used to shut machine down. if it goes bad in any way, no power will go to the control board. Start there.

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1 Answer

Hoshizaki troubleshooting


Need entire Model number. usually ends with a number. Serial number would help too.

Jul 17, 2014 | Hoshizaki Freezer Commercial Ice Machines...

1 Answer

How to reset Hoshizaki ice maker ?


If you just want to reset it because it is making a beeping sound, there is a small white button on the control board. just press it while the power is on. If you want more than that, please supply more info.

May 25, 2014 | Hoshizaki Freezer Commercial Ice Machines...

1 Answer

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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1 Answer

Hoshizaki ice machine model KM-250BAF SERVICE MANUAL


km-450mwb hoshizaki problem is machine strate is ok but to long time ice making , not dropping, two beeps every three seconds what problem i don't no pleas help mi

Jul 30, 2008 | Hoshizaki Freezer Commercial Ice Machines...

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