Question about Manitowoc Koolaire Undercounter Freezer Reach In One Section 6in Adjustable Legs

1 Answer

Harvest light on Manitowoc Q series stays on

The harvest light stays on even after cleaning and trying to reset, it wont freeze the ice, water just run through

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  • steve
    steve May 11, 2010

    You need to be a little more specific. Was it working OK before cleaning? If the water running over the ice grid or out the dump valve? Did you let the clean cycle time out before you went back to ice mode? Did you replace the bridge thickness control? Did you manually activate the bridge thickness control?

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Obtain wiring diagram

sounds like the switch that initiates the harvest is stuck closed....sounds funny but i would try to tap the unit and see if the light goes out

Posted on Oct 02, 2009

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1 Answer

Scotsman ice maker stay in harvest


If it was unplug while at some point when the unit was in the freeze cycle or loss of power . It's programmed to go into harvest even if you press freeze...it doesn't know if ice is on the evaporator or not...let it run its course 5 to 6 mins

Dec 12, 2014 | Kitchen Appliances - Others

1 Answer

I have a Scotsman CME 506 ice maker. After running a cleaning cycle it won't run. After resetting the freeze light blinks and nothing happens. The water inlet valve never opens (the sump is current


CM3 Operational Sequence.
From Off, push and release the freeze button.
1. If sump is full,water pump starts.If sump is not full,water valve opens to fill it.
2. Compressor starts when sump is full.Air cooled fan motor starts too.
3. water pump stops early in freeze cycle for 30 seconds.
4. Sump refills after pump starts.
5. In low ambient condition,fan motor may begin to cycle on and off.
6. Freeze continues until water level in sump drops to preset point. Exceptions: SCE275 must fill sump two more times.
7. Fan may shut off before the end of freeze.
8. Harvest begins. Hot gas valve opens,pump stops.
9. Pump restarts, inlet water valve opens to fill and overflow the reservoir.
10. Harvest continues for preset first cycle harvest time.
11. If bin is not full, cycle repeats ( compressor stays on). If bin is full, unit shuts off at the end of harvest.
OK with that out of the way unless you unplugged any wires cleaning the machine should not have caused any problems. First cut off water and pull water supply line from water inlet valve look in the end of valve there is a screen in there it could be stopped up. If the valve screen is not stopped up then put supply water line back on and turn water back on. power the CM3 controller off. push freeze button. now with a voltage meter check at the water inlet valve to make sure you are getting power to the valve.If you are then either valve is stopped up or valve is bad. If you are not getting power to valve then replace the CM3 controller now make sure the bin full light is not on because if it is this will not let controller go back to a freeze cycle.

Oct 28, 2014 | Kitchen Appliances - Others

1 Answer

How can i fix my manitowoc qm45a runs water but won't freeze the water?


The thickness sensor is shorting, making the machine continually harvest. Clean it and dry it. If it still happens, replace the sensor.

Aug 05, 2014 | Manitowoc Compact Undercounter Ice Machine...

1 Answer

Ice machine locks out.


After ice is produced (usually about 12-15 minutes) harvest is initiated and the ice should drop off of the plate and the curtain opens and closes in 90 seconds or so. If it takes three minutes and the curtain doesn't open and close the unit will go back into freeze. It will do this three times and then lock out.

First - does the unit make ice and start harvest in 12-15 minutes? Second - Is the ice thick enough? it should be one continuous slab with about 1/4" bridge across the front of the slab. IF both of these answers are yes then the plate is either bad or it needs cleaning. You need nickel safe ice machine cleaner and probably an experienced technician to determine if the plate is worth cleaning or is worn out.

Mar 04, 2014 | Manitowoc SY0454A S Series Ice Maker...

2 Answers

Harvest time exceeded


Run wash cycle, take it a part and clean all distribution rail! Hope That Helps!

Mar 04, 2014 | Manitowoc SY0454A S Series Ice Maker...

1 Answer

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.

Jan 08, 2014 | Scotsman Cooled Modular Contour Cuber Air...

1 Answer

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.

Dec 15, 2013 | Scotsman Ice Maker CM3 30inW Cubed Ice...

1 Answer

It will not stay in harvest cycle long enough to make ice before it goes into defrost


First it has to go through freeze cycle then harvest cycle to drop ice then back to freeze cycle. If you have never worked on ice machines before you should call a service company.

Aug 16, 2013 | Manitowoc QY-0214A Self Contained Ice...

1 Answer

Ice maker Manitowoc QD-0212A


This light is a harvest limit light. This light's primary function is to be on as water contacts the ice thickness probe during the freeze cycle, and remain on throughout the entire harvest cycle. The light will flicker as water splashes on the probe. The lights secondary function is to continuously flash when the ice machine is shut off on a safety limit, and to indicate which safety limit shut off the ice machine. Start up of machine after turned off. !. Before the ice machine starts, The water pump and water dump solenoid are energized for 45 seconds to purge old water from the water trough. This ensures that the ice making cycle starts with fresh water. The water fill valve energizes after 45 second water purge, and remains on until the water level probe is satisfied. 2. to pre-chill the evaporator, there is no water for the first 30 seconds of the freeze cycle. 3. The water pump starts after 30 seconds pre-chill. An even flow of water is directed across the evaporator and into each cube cell.

Jul 13, 2013 | Kitchen Appliances - Others

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