I'd also take a further look into your ice machine. Please note that hoshizaki ice machines come in a variety of models and sizes.
View there different types here -> Refrigerators
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.
I agree clean float assy and take check valve apart make sure nothing is stick it open allowing g you water to drain out. Also there is a rubber grommet that wears out over time. Hoshi works by filling with water and once float says hey enough water is missing from initial fill so it's all frozen into ice, and it initiates harvest. This float can be adjusted and cleaned. Or the check valve allowing the water to leave could trick the float and instead of the water being frozen it has slipped out through the stuck open check valve. Most float switches don't talk though
×
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.
SOURCE: Water leaking onto ice and outside panel on Hoshizaki KM-500MAE
Remove the cover where the persons finger is and check to make sure that it is not covered with ice. Sounds like your machine iced oup and you will need to clean the coils and possibly replace the thermostat
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
SOURCE: My Hoshizaki KM-500MAE has ice built up inside the machine
If this unit is iced up this bad, when it goes into the harvest mode, if it has hot gas defrost or electric grid, its not working, The ice will continue to build up all around the coil, flaps, everywhere there is a place for ice to build up. When you defrost it, it will continue to do this. With out service gauges to check this unit when it goes into harvest mode you are not going to find the problem. I hate telling you this, but some things you cant check without special equipment and I know you are trying to save $$$ as we all are. You will need to call a tech out to install his gauges to do the internal checks on the unit and use his electrical meter to check other componants. Please let me know and keep me posted.
Sincerely,
Shastalaker7
SOURCE: Hoshizaki KM-900MAH Ice Maker it sounds like it is
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.
If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61
1,043 views
Usually answered in minutes!
×