Ice machince is going max freeze cycle shut down

Low room temperature - Most Scotsman ice makers won't produce ice when the temperature is below 55 degrees Fahrenheit. Make sure the machine is in a room or setting that is warmer. ... Faulty thermistor - A bad thermistor usually causes the bin to fill with too much ice.

Diagnostic Codes

• 1 - Long freeze time. Shutting down.
• 1 (flashing) - Retrying long freeze cycle.
• 2 - Long harvest time. Shutting down.
• 2 (flashing) - Retrying long harvest cycle.
• 3 - Water filling slowly.
• 4 - High discharging temperature.
• 5 - Failed sump temp sensor.
• 7 - Failed discharge temp sensor.
• 8 - Thin ice from short freeze cycle.
• 8 (flashing) - Retrying short freeze cycle.

E1, means low ice production
Ice machine cycle takes to long to call for a harvest. When this happens it should shut the whole unit down and then show the error code. Reset power supply, Turn off then Turn on the machine. Check for these problems. Gas leaking by the hot gas valve when in freeze mode, this valve should only let hot gas by when it is in a harvest mode. Check water control valve to make sure it is not letting water in during freeze cycle. Check water float switch to make sure it is not stuck calling for water during freeze cycle. Also make sure the machine is not in a hot location, the hotter the ambient surrounding air entering the condenser coil the longer it takes to make ice.

Max harvest cycle just keeps it in a harvest longer. if you set the freeze setting to its lowest point and ice is still to thick then replace the freeze stat.

check the cycle time for a batch of ice. should take around 15 minutes to freeze and then you will hear the harvest cycle kick in. If the harvest cycle takes 3 minutes or more that is your problem. You will need to get a hold of NICKEL SAFE ICE MACHINE CLEANER. DO NOT use CLR or any kind of cleaner other than NICKEL SAFE ICE MACHINE CLEANER. If the ice doesn't fall off of the plate in about 90 seconds either the plate is dirty or the nickel plating has come off. There is a failsafe shut down if the unit takes more than 60 minutes to freeze or more than 3 minutes to harvest 3 consecutive times. The cleaning instructions should be inside of one of the covers. If not it's available online.

Min freeze time 6 minutes and max freeze time 45 minutes. the 6 minutes is with perfect conditions. Example: Cycle time water temp was 50 degrees coming in to the water sump tray from water supply and the Ambient air temp surrounding the machine was a constant 70 deg than the machine should make ice every 10 - 12 minutes.now we know that the water temp from the water source is not going to be 50 deg and room temp will not be 70 deg all the time so the warmer water temp and ambient air temp is the longer it takes to make ice. one thing you wont to check is the water inlet valve to make sure it is not letting water seep through causing water temp not to cool down from running across evap plates. make sure the condenser coil is clean this will slow down production of ice.

Hi and welcome to FixYa, I am Kelly.

When a refrigerator slows down ice production it is usually the result of poor air-flow through the evaporator coils. The poor air-flow is due to ice build up on the evaporator coils. The ice build up happens because the unit is not defrosting properly or the evaporator fan is not running at full speed.

To answer your question "Can an Ice-maker tube freeze?" Yes, they can and do freeze but when they do freeze that is caused by a defective inlet water valve that is leaking water by when it is supposed to be shut off. It can freeze if some one set the temp control to MAX cold. Additionally when they do freeze and the Ice-maker cycles the plastic hose on the back of the unit pops out of the ice maker tube and each cycle starts porting ice maker fill water on the floor.

This may sound odd.. but. Perform a manual defrost by removing the freezer contents and directing a fan into the freezer compartment for just over 2 hours. (Makes a water mess so do not leave it unattended) The return the unit to normal service and after 8 hours start watching the amount of ice produced. (Should be normal for 2 days!) If after 2 days the ice production slows again you have an automatic defrosting problem that is causing the ice build up on the evaporator coils.

If you need any more assistance please include your complete model number in any future responses.

Thanks for choosing FixYa,
Kelly

I would guess that the freezer is turned down too low to give the water in the ice maker time enough to freeze solid before the action of the ice maker completes it's cycle. Turn the freezer thermostat up to max and see if this makes a difference. After checking, if the ice is frozen solid, then dial it back half way between where you had it set and max, then check again.

DO THE BASICS:
Change the water filter
Add ice machine cleaner and go by the directions.
What should be kept clean?
There are 5 things to keep clean:
1. The outside cabinet & door.
2. The ice storage bin.
3. The condenser.
4. The ice making system.
5. The ice scoop.
The ice storage bin should be sanitized
occasionally. It is usually convenient to sanitize the
bin after the ice making system has been cleaned,
and the storage bin is empty.
A sanitizing solution can be made of 1 ounce of
household bleach and two gallons of hot (950F. -
1150F.) water. Use a clean cloth and wipe the
interior of the ice storage bin with the sanitizing
solution, pour some of the solution down the drain.
Allow to air dry.

How to clean the condenser.
The condenser is like the radiator on a car, it has
fins and tubes that can become clogged. To clean:
1. Remove the kickplate.
2. Locate the condenser surface.
3. Vacuum the surface, removing all dust and lint.
Caution: Do not dent the fins.
4. Replace the kickplate.
Winterizing
1. Clean the machine as explained on the next
page.
2. Turn off the water supply.
3. Drain the water reservoir. See page 24, Spray
Pump Repair and follow the instructions to remove
the pump hose (step 2, bottom hose only).
4. Disconnect the incoming water line at the inlet
water valve.
5Remove control box cover and turn the timer
into the harvest cycle.
6. With the machine operating, blow air through
the inlet water valve; a tire pump could do the job.
7. Drain pump models should have about 1¤2 gallon
of RV antifreeze (propylene glycol) poured into the
ice storage bin drain.
Note: Automotive antifreeze must NOT be used.
8. Replace control box cover. Switch off and
unplug the machine.

CUBE ADJUSTMENTS
There are three items that may be adjusted: Cube
Size, Harvest Time, and Bin Level. Note: Cube
Size and Harvest Time adjustments should only be
done by a qualified service person.
Cube size control.
The cube size control should only be adjusted to
bring the cubes to the correct shape, the overall
size cannot be adjusted. Try to adjust the cube
size control when the ice machine is in the harvest
cycle, or in the first 10 minutes of the freeze cycle.
1. Open the door and remove the control box
cover.
2. Locate the cube size adjustment screw, and to
make fuller cubes, turn the screw clockwise about
1/4 turn. This will make the freezing cycle longer.
3. To shorten the freezing cycle and make cubes
that are not as full, turn the adjustment screw 1/4
turn counterclockwise.
4. After the next freezing cycle, the cubes should
have responded to the adjustment, if another
adjustment is required, do it early in the freeze
cycle.


Diagnostic Codes
Code Description
F - - - - - - - Freeze Cycle
F flashes- - - - Freeze Cycle is Pending
H - - - - - - - Harvest Cycle
H flashes- - - - Manual Harvest
b - - - - - - - Bin is Full
C - - - - - - - Clean Cycle
L - - - - - - - Board Locked
d - - - - - - - Test Mode
O - - - - - - - Off
E - - - - - - - Self Test Failed
1 flashes- - - - Max Freeze - Retrying
1 - - - - - - - Max Freeze Time Shut Down
2 flashes- - - - Max Harvest - Retrying
2 - - - - - - - Max Harvest Time Shut Down
3 - - - - - - - Slow Water Fill
4 - - - - - - - High Discharge Temp
5 - - - - - - - Sump Temp Sensor Failure
7 - - - - - - - Discharge Temp Sensor Failure
8 flashes - - - Short Freeze - Retrying
8 - - - - - - - Short Freeze - Thin ice
All 4 Upper Lights Flashing - Unit Remotely Locked Out

If you need further help, reach me via phone at https://www.6ya.com/expert/dan_73bbd84fe1d95b61

(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.

maybe not. it could be that the heating cycle is taking a lot of time to remove the ice from the evaporator that is why the electronics is shutting off the compressor as a protection. check the heating cycle if it is working fine. check the evaporator for dirt that would hold the ice slab from falling down quickly. check the level of the unit. it may have move and now its out of level. the unit must be leveled with the ground.