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U Line CLR60 Ice Maker gets stuck in harvest mode & melts ice

Apparently there is a solenoid valve that reverses the flow of refrigerant when the controler board tells it it is time to harvest ice. my unit has always had problems but recently has developed an intolerable issue whereby the unit begins harvest mode after 10 or more cycles and gets stuck in harvest mode. this causes the grid to get hot and stay hot, 100 degrees or more. the compressor continues to cycle, fan runs, etc. but the grid remains hot. i am told that this is due to faulty solenoid valve and am going to order this part and attempt to get it repaired. any ideas beyond this would be great.

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  • Turning Wrenchs Jan 14, 2012

    Know this is a way old post but I don't think Uline ice machines have hot gas solonoids. Pretty sure they're just glorified residential units that use a heater and a timer. And the box it self is not more they a small freezer with an ice maker in it.

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Have you got the equipment to change this solenoid valve? you will need a vacuum pump to evacuate the system once you have changed the valve, and the equipment to charge the system with refrigerant (gas).

Posted on Feb 04, 2009

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1 Answer

Ice machine stay in harvest afther freeze cycle


Check the water solenoid to make sure it is not stuck & flowing water through it all the time. The circuit board may also be bad

Dec 12, 2014 | Ice Makers

1 Answer

I have a Manitowoc J series and it will run three cycles and then shut off. I will start again and the same thing happens. everything else seems to be fine.


Chances are the unit is shutting down on an error code. It will shut down after three batches if either A: the unit takes too long to make ice, or B: a harvest cycle lasts too long. You can time a batch of ice with a timer or stopwatch... if you listen you should be able to tell when the "ice making" stops and the "harvesting" begins. Ice making should take about 13-15 minutes and harvesting 1.5 to 2.5 minutes. If I remember correctly the error codes are triggered if the ice making takes 60 minutes or longer and/or the harvest takes 3 minutes or longer. You can tell which error code is tripping by accessing the electronic control board. There is an LED indicator that will blink when you turn the unit on if there is an error present in the memory.

Oct 25, 2014 | Ice Makers

1 Answer

Why my scotsman ice machine goes off on the refridgertion light


This could be several things. This means it has tried to harvest the ice 3 consecutive times before the machine has locked out.
1. Likely Cause, Ice bridge thickness too small, not enough ice to open curtain. PROBABLE SOLUTION, Check and adjust if needed.
2. LIKELY CAUSE, ice bridge too large, ice frozen to evaporator frame. PROBABLE SOLUTION, Check and adjust if needed.
3. LIKELY CAUSE, Purge valve does not open, water melts ice bridge, not enough ice to open curtain. PROBABLE SOLUTION, Check purge valve during harvest.
4. LIKELY CAUSE, incomplete ice formation. PROBABLE SOLUTION, Check water distributor for partially plugged holes. The machine needs to be cleaned and sanitized every 6 months.
5. LIKELY CAUSE, Curtain out of position. PROBABLE SOLUTION, check curtain for swing restriction.
6. LIKELY CAUSE, Curtain switch dose not open when curtain does. PROBABLE SOLUTION, Check switch with ohmmeter if bad replace.
7. LIKELY CAUSE. Machine in very cold ambient. PROBABLE SOLUTION. Move machine to a warmer location.
8. LIKELY CAUSE. Hot gas valve does not open during harvest. PROBABLE SOLUTION. Check hot gas valve with a volt meter during harvest mode to see if you are getting correct voltage to it. If not then replace control board . IF yes and valve is not opening then replace valve.
9. LIKELY CAUSE. Harvest assist probe out of position - ejector pin not retracted. PROBABLE SOLUTION. Check harvest assist mechanism - spring should retract pin.
10. LIKELY CAUSE. Damaged evaporator. PROBABLE SOLUTION. Check evaporator surface. Make sure the plates where they intercept each other is not loose this will cause ice to hang up. check to make sure the nickel is not peeling off, if so then the plate will need to be replaced.
11. LIKELY CAUSE. Fan motor stays on during harvest. PROBABLE SOLUTION. Check controller using test mode. If this dose not help you then give me the model number so i know what machine you have.

May 28, 2014 | Scotsman Ice Maker CM3 30inW Cubed Ice...

1 Answer

Refrigeration code on scotsman ice machine model cme506as-32f.What could be the cause?


Unit is off& Refrigeration diagnostic light is on or blinking. Possible Cause,( Low discharge or long freeze cycle. Probable correction, if the Refrigeration light is glowing steadily there is a probable refrigeration problem.) 2. Possible cause. Harvest problem. Probable Correction. If refrigeration light blinks once and repeats, Look for a harvest Problem.**On Controllers 17-1 and higher, This also indicates that cubes were (sensed) by the bin controls. 3. Possible Cause. Hot gas valve failure, Probable Correction. Check hot gas valve operation. 4. Possible Cause, High Discharge Temp. Probable Correction, If the refrigeration diagnostic light blinks 3 times and then repeats, check for a reason for high discharge temperatures. 5. possible Cause, Harvest problem. Probable Correction, Controllers 17-1 and higher, if the light blinks 2 times and repeats, check for a harvest error- no cubes sensed. 6. Possible Cause, Unit dose not go into harvest - exceeds maximum freeze time. Probable Correction, Push and release off button. Push and release Freeze button. Check operation. next Push cube size float down and check operation. 7. Possible Cause, Exceeds maxi harvest time. Probable Correction, Check for cause of long harvest cycle. Try not to put any gauges on system until you have to. Every time you do you loose refrigerant out of the system.

May 02, 2014 | Ice Makers

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

Ice machince is going max freeze cycle shut down


1. Possible cause. Water leak. Check purge valve, water curtain, sump, sump hose.
2. Air filters clogged. Clean air filters.
3. Dirty condenser. Clean condenser.
4. Restricted location, intake air to hot. Have machine moved.
5. Ice thickness sensor dirty or disconnected. Check ice thickness sensor probe.
6. Water distributor dirty. Remove and clean water distributor.
7. Inlet water valve leaks through during freeze cycle. Check water inlet valve.
8. Connected to hot water. Check for bleed through from missing check valve in building water supply.
9. Incomplete harvest. Check harvest system.
10.High pressure cut out opened. Check fan motor pressure control, check fan motor, check controller using test mode.
11. Fan motor pressure control open. Check fan pressure control.
12. Fan motor not turning. Check fan motor, check fan blade,check controller using test mode.
13.Water pump not pumping. Check pump motor,check controller using test mode.
14. Pump hose disconnected. Check hose.
15. Compressor not operating. check compressor contactor, check controller using test mode.
Check compressor start components, check PTCR resistance and temperature, check compressor voltage, check compressor windings.
16. Low refrigerant charge. Add some refrigerant and restart unit. If cycle time imporves, look for a leak.
17. Hot gas valve leaks through during freeze. Check hot gas valve for hot outlet during freeze.
18. Thermostatic expansion valve bulb loose. Check bulb.
19. Thermostatic expansion valve producing very low or high superheat. Check evaporator superheat, Change TXV if incorrect.
20. Compressor inefficent. Check compressor amp draw, if low and all else is correcy, change compressor.

Sep 28, 2013 | Scotsman Ice Maker CM3 30inW Cubed Ice...

1 Answer

My manitowoc series 420 has a code telling me the compressor discharge temperature


Which code is that? I don't see that in the service manual. There is an E09 that indicates that during the first six minutes of freeze the discharge temperature was below the average of the last 6 cycles. I have searched from E01 to E31 and don't see the code you indicate but I would say you either have a low refrigerant charge, a flooding TXV that is allowing too much refrigerant flow into the evaporator and not allowing enough flow to be diverted into harvest, or a weak compressor. Reset the unit and check the temperatures on the display while its running and time a freeze cycle. Should take about 15 minutes to make ice.

Jun 28, 2013 | Manitowoc ID-0452A 420 Lb Full Size Cube...

1 Answer

My icemaker will get cold but wont make ice.


Hi and welcome to FixYa, I am Kelly

Here is what the manual says:


3. Icer-ette freezes but water does not come into mold; no ice production.
_____________________________________________________________

3A. Nonfunctioning water valve assembly. 3A. Clean or replace solenoid valve assembly.

3B. Mold heater assembly. 3B. Contact Raritan Technical Support.

3C. Water supply turned off. 3C. Provide pressurized water.

3D. Icemaker module. 3D. Replace icemaker module.

3E. Cold control. 3E. Replace cold control.
3F. Bad wiring harness plug contacts. 3F. Contact Raritan Technical Support.*

Although this is for troubleshooting non optical sensor refrigerators:

http://www.american-appliance.com/catalog/newsdesk_info.php?newsPath=12&newsdesk_id=34
The troubleshooting procedures for cycling the unit are exactly the same,
The ice maker module part number for the 120V unit is PN 628366 (do a net search for this part number and save yourslef a bumch of money if you fetermine your moduleis bad) You start the harvest cycle by removing the front cover and then jumpering test points T to H. The white dial will begin to move if there is power to the module. Remove the jumper when the sweep arm reaches 5" o'clock and let the ice maker automatically cycle. It should harvest, and fill in on complete turn of the white dial. If it does not fill you probably have a water supply or water valve problem. There is an inline input power fuse for the ice maker. Power should come in via the red wire.

Mind you the ice maker has an internal thermostat behind the module assy that has to reach 15 deg F to start the harvest cycle. When you jumper T to H you are bypassing the thermostat. If the thermostat fails or the unit does not reach 15 deg F then the harvest cycle will never begin.

Thanks for choosing FixYa,
Kelly



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Nov 25, 2010 | Raritan Icer-ette Ice Cube Maker

4 Answers

Clr2060 water freezes but it never dumps the ice.


You might try adjusting the “ice thickness” setting on the control board or you cold have a defective hot gas flow back solenoid. When the machine goes into harvest mode this solenoid activates and allows hot refrigerant gas to flow backwards in the system and melts the ice off the grid and then it falls into the bin.

May 27, 2008 | U-Line Icemaker

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