Question about Scotsman Ice Maker CM3 30inW Cubed Ice Machine 900LB

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How to get ice going

I have power and everything is on.How do I switch so I can start harvesting

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First is the machine making ice ? If it is making ice is it thick enough so the water comes in contact with the ice thickness probe. This has to happen so the machine will know it needs to go into a harvest. You should not have to fores it into a harvest it should be doing it on it on. There is a harvest button on the CM3 controller but when you push it its going into a harvest and when it finishes the harvest it will shut the machine OFF. I really need more info. What is it doing or not doing?

Posted on Nov 19, 2014

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Posted on Jan 02, 2017

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My hoshizaki ice machine KM-900mrf model beeps 3 times and stop making ice. After reset it starts, but stats beeping again after an hour.


Have a look at the side of the evaporator; there is a probe (thermistor) attached to it that tells the control board when to initiate the harvest cycle. make sure it's clean and attached properly and doesn't need replacing. If hitting the float switch initiates the harvest cycle it sounds like you have a blocked/ scaled water tube or switch housing. take off the bottom of the switch assembly (black rubber bit) and clean through to the water chamber. run a cycle of descaler before trying again.

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1 Answer

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go to the freeze timer which has off and on dip switches. take some freeze time out by moving the first switch to off this will shorten freeze time. Also check the harvest assist solenoid and plunger when it go's into harvest. make sure the machine is cleaned and check the cube plate to make sure that none of the plates are not loose this will cause ice to freeze between the loose spots and will not let ice come off the plate.

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Model CME256AS-1D will not go back into freeze cycle and will eventually stop, requiring the unit to be reset.


So is the unit going into a harvest and not going back to a freeze cycle? dose it dump a batch of ice but wont go back into a freeze cycle? before you reset it have you pulled the front cover to see what code it is giving? any time you have to reset it that means it locked its self out on a fault. if unit freezes and go's into a harvest and dumps the ice but dose not go back into freeze cycle check the door switch when the ice dumps the deflector door opens a magnetic switch which tells the board the harvest has finished and then the freeze cycle begins. Now if there is no ice falling off the plate to open the door then the board will time out and try 3 more times to make ice before it locks it out. the same go's for the harvest.

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Sce170a-1a wont harvest


This machine has a cube size control. Which tells the machine when to go into a harvest. there is a harvest switch did you try to force it into a harvest and if you did, did it harvest. depending on ambient temperature from start of freeze cycle to harvest it should be making ice every 15 to 18 minuets and then go into a harvest. so start the ice machine and time it , run it for 18 minuets and force into a harvest. after ice drops check the ice bridge thickness. Bridge thickness should be about 3/16'' the ice dimple must not be DEEPER than 1/16". If this is good then we need to look at what is not working to harvest ice. The cube size control is a reverse - acting thermostat that controls the start of the timed freeze cycle. It must be set properly to prove the correct size cube bridge. When it is closed, an indicator light on the control board will be on. If you force it into a harvest and it harvest the ice with no problems and the ice is at the right thickness then replace the cube size control, but if dose not harvest the ice and you see the ice is at a good thickness and not to thick because if it is to thick it will freeze to every thing and will not drop. SYMPTOM. Unit freezes, but will not try to harvest. POSSIBLE CAUSE: Cube size control will not close; to check: Unplug water pump, switch unit OFF and then ON, in about 2 minutes the timed freeze light on the control board should be ON. PROBABLE FIX: If timed freeze light does not go ON, replace cube size control. SYMPTOM #2: Timed freeze light glows, but after 4 minutes unit dose not power hot gas nor purge valves Then replace control board.

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1 Answer

Water keeps running on cm3


Replace the ice thickness sensor hanging on the front of the evaporator plate. when you turn the power off and back on factory default is to go to harvest first. if the ice thickness sensor dose not sense the ice is thick enough then it will not go into a harvest. before you replace the sensor take it loose from the evap plate and drop it into the water sump tray if it goes into a harvest then replace the board. if not then replace the sensor.

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1 Answer

Have a mantowac 150 Model # BD0152A, plug it in and it begins the freeze cycle and will go thru the harvest cycle once or twice then it kicks off and everything melts. I can reset it and it will start the...


It is going off on a safety limit. Either taking too long to harvest, or too long to make ice. When you switch on, the pcb will flash once or twice. The manual , or usually a printed sheet inside the lid, will tell you which limit has been exceeded and what the likely causes are.

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Hoshizaki KM-900MAH Ice Maker it sounds like it is making ice and is freezing it but its not dropping ice any solutions?


when the machine first starts, it begins it's cycle in the harvest mode. If the float switch is stuck, it stays in the fill/ harvest mode. Compressor runs and water circulates but no ice is being made. I'd start looking there. Turn the machine on, let it run for about 3 minutes, they very lightly tap the float switch. If it starts making ice, bingo, theres your problem. Let me know if I can be of any more help.

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1 Answer

The ice maker just stopped making ice today. It's made ice great for the past 3 years. Everything else works.


If the water pressure for water through the door is low I would check your saddle valve that taps into the line. I would next check your icemaker fill tube to make sure it is not frozen. If it is then you will need to replace the saddle valve because it is due to low water pressure.
You can try to manually harvest the icemaker by turning the power switch off-on-off-on and then pushing the lever in three times in a row. This will harvest the icemaker. If the icemaker harvests and the rake moves then its most likely still good. (if theres a batch of cubes frozen in the ice maker then its def bad.) If you get it to harvest and no water comes in then you will know its a water supply issue.
Replacing the inlet valve and saddle valve will most likely correct the issue. You may only need a new saddle valve and they only cost about 10 bucks.
Let me know if this helps _MJ_

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2 Answers

Ice maker will not harvest


As crazy as this sounds, turn the temp control a little warmer (counter clockwise). On this model, this control needs to switch to harvest the ice. A warmer setting should fix this issue.

Dean

You can also go to:

www.u-lineservice.com

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