What causes the manitowoc ice machine to cut off during the freeze cycle

Greetings,

when this occurs, please add some salt to the idea in order to stop the ice from sticking together as much. That's the temporary fix. For any other machine, I would think this was an oil issue. That's the parts that create the ice stop-up due to friction caused by a lack of oil. I'm guessing that every time you clean the machine, you decrease the friction between its parts due to the water/soap that you use, but then the oily soap residue gets used up, and the issue returns. Please test out my idea.

Thank you.

Liquid line sensor on ice machines in general is used in conjunction with the control boards to determine defrost and harvest cycles. You could measure the line temp and chech the resistance of the sensor to check it.

Betabass

If you need further help, I’m available over the phone at https://www.6ya.com/expert/jerry_8a145f1328fa119f

Hi,

In the manual the fix is to clean the ice maker with cleaner. Your ice slab is not releasing during harvest. The plate (evaporator) has minerals on it and needs to be cleaned to remove the build up. On the door of the unit has cleaning instruction, do not short cut the cleaning process, this does take about an hour and follow the instruction to the letter.

This is not a major issue, just cleaning is needed.

I’m happy to help further over the phone at https://www.6ya.com/expert/gere_bf68e6055dd61249

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.

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.

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.

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.

Erik I just returned from surgery and sorry I missed your request. Anyway here is the Manitowoc Series Q 210 User and Service Manual The last three pages are a checklist of things we need to go over. I can help if you still have questions, Thanks Sea Breeze


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Based on your finding on your second trip, the machine shut of on one of the safety timeouts that limit the harvest and freeze cycles. Its possible that the evaporator has lost some nickel plating and the ice is hanging, but first the heat build up in the storeroom is a problem if you get running again come back a few hours later and check the ambient temp in the room,its probably above the machine design temp. Can a vent be cut in the ceiling? an exhaust fan to **** that heat away would be good.

you will have to find the main board unplug the connector for about a mintue plug back in. This should reset unit