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

1 Answer

Hoshizaki km-900maf / water was turned off for 5 days / machine was left running /wash setting works but wont go into freeze cycle / just beeps

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  • Hoshizaki Master
  • 1,300 Answers

Try resetting the the "reset" button on the control board. it may be just that simple.

Posted on Jun 17, 2017

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5 Suggested Answers

Anonymous

  • 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

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Anonymous

  • 1 Answer

SOURCE: 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

Posted on Jan 19, 2009

Dennis Boxerman

  • 1300 Answers

SOURCE: Hoshizaki km-1300skf 3 beep error code

The 3 beeps indicates that the freeze cycle is longer than 60 minutes. with the suction pressure at 20, it sounds like low on charge (freon). I believe this is an R 404-A unit. Other things to look for are: Stuck float switch (in the up position), Water valve leaking, hot gas valve leaking, txv not feeding properly, weak compressor. Look at high side pressure too. It should not go below 210 psi during the freeze cycle. Low pressure should be in the middle to upper 40's psi.

Let me know if you need more.

Posted on Feb 14, 2009

farfield

Farley Redfield

  • 462 Answers

SOURCE: Hoshizaki ice machine with constant beeping every 3 seconds

I believe if you remove the thermostat wires and put them together and retry it you'll be making Ice, then get you a new thermostat. Please rate me accordingly and good luck.

Posted on Mar 20, 2009

Dennis Boxerman

  • 1300 Answers

SOURCE: Hoshizaki ice machine model KM-450MAB water runs

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

Posted on Apr 03, 2009

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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

3 Beep Warning


Staying in the freeze cycle too long. Usually about an hour. Several things can cause this. Look for water running even if machine is off. Possible stuck float switch. And more.

Nov 08, 2013 | Hoshizaki KM-61BAH 49 Pound Self-Contained...

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

I have a Hoshizaki model Km-250baf it beeps three times.


3 beeps means it has been in the freeze cycle too long. A stuck float switch can cause this as well as a leaking water valve. Look for that first. Let me know if you need more info.

Feb 06, 2011 | Hoshizaki Freezer Commercial Ice Machines...

1 Answer

KM-500-MAE Problem huge cubes,alarm code 3-beeps


excessive freeze cycle=60 minutes. In almost every case, it's the water valve (sometimes called the fill valve) is leaking water continually into the sump. Turn machine off and see if you can still hear water running into the unit. If so, it the valve leaking. Just replace it.
http://www.hoshizakiamerica.com/manuals/KM-500M_E_serv.pdf
Go to this site and download you copy of the service manual. It has lots of good stuff.. Let me know if I can be of any further help.

Sep 30, 2010 | Hoshizaki Freezer Commercial Ice Machines...

1 Answer

Hoshizaki ice machine KM500-MAE not sending water to harvest


I would not change the pump. If it runs for 3-5 minutes and stops, it has to be a control. The control board runs the freeze cycle for the first 5 minutes. This prevent "Short Cycling" of the freeze cycle. The board looks at the float after the first 5 minutes for the proper water level but should not effect the pump. If the pump does not run in the wash mode, check out the "Power/ Wash" switch. I would start there before I go spending hundreds on pump motor or control board. You may be able to get by on a $20 fix! Do this and get back to me. We will get it going.

Good Luck

May 06, 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

2 Answers

Hoshizaki ice machine with constant beeping every 3 seconds


Most likely(50% of the times) Your Ice machine need a real cleaning. not just run clean cycle with ice machine cleaner. every 6 month call HVAC-R guys - machine will last half time longer if u schedule proper maintenance with them. I have seen It all: people try to call "friend", or someone who "knows" how this machines work. Real clean would take up to 3 hours for people who know what they doing. Here is one of my videos, when 3 beeps - long freeze cycle is not common and all others would offer You to get a new Ice Machine. Bill to the owner was 950$, New Machine 3450$ plus labour to install 600$.

Jun 23, 2008 | Hoshizaki Commercial Freezer KM-500MAH

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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