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  • scotsman ice maker code 8

     HakimJacob updated 1 week, 5 days ago 6Members · 32 Posts
  • guest

    Member
    February 26, 2019 at 12:00 am

    I keep getting the code 8 I have done all what I seen from here. Clean the water flow, clean the thickness probe. But still gives me the code 8. Should I change out the thickness probe

  • fixbear

    Member
    February 26, 2019 at 11:47 am

    You didn’t state what machine you have, so I’m assuming that it is a cuber and you know that the code comes back to ice thickness or long harvest.

     

    The ice thickness probe can be monitored on the controller LED for continuity.  It is common for it to get false readings if the spray bar in not clean or you have a water filtration problem and high minerals.  Also if any cleaning solution is left on it. The cleaner is a acid (phosphoric) and is very conductive.  When cleaning the machine I always remove the sensor, scrub with a tooth brush, then rinse with a small amount of baking soda before drying and reinstall.  Many guys will just change it out, but routing the wire is a bit difficult and more time consuming.  Let alone the cost.  But if it has a hairline crack, replacement will be necessary. 

     

    Pay especial attention to the spray bar and flow over the plate. It has to be even and slow. Often if someone has replaced the pump with a non OEM the capacity will be incorrect and make to aggressive a flow that will bother the sensor.  Plugged holes or mineral buildup on the flow plate can also cause a problem. 

     

    Give me a model number so that I know what you are working on.

  • boodro

    Member
    February 26, 2019 at 6:36 pm

    CO330SA-1A. This is what started all my problems. My machine was going

    down on Max Harvest. After many looking around then calling Scotsman

    help desk. He tells me to hit the Manual Harvest button. To see if the

    lil rod comes out to push the ice. Well it didn’t then looking at the

    solenoid the plastic it was broken inhalf and rusted stuck. So I changed

    it. But while waiting on the Harvest Assist to show up. I gave it a full

    blown cleaning. Well I got my part in changed it an down hill it went.

    Putting it back into service it would keep going down on Short Freeze

    Code 8. The thickness probe looks in good shape. But keeps going down on

    the Code 8. So I ordered a new ICE THICKNESS PROBE to try. Then if it

    goes down again on this code all I know I will have to call a Tech to

    SERVICE it for me.

  • fixbear

    Member
    February 26, 2019 at 8:52 pm

    Ok.  This is the service manual for it.  Make sure to read the section on how it works. Also how to adjust the harvest sensor..

    https://www.partstown.com/scotsman/c0330sa-1/manual/sc-c0322-sm?page=22

     They are the easiest of any ice machine to troubleshot due to the LED set-up.  One just has to watch them for a cycle or two.

     

    Cleaning on them is a critical thing that small details mater. The service manual will give you a time period for the sensor to not be constant and to have a normal cycle for the freeze lockout. Make sure to read pg 42 on the sensor and spillway.  Also make sure that the wire to the sensor is clean and dry.  It can also conduct and fool the controller.

     

    I shouldn’t neglect to also tell you the water level sensors also require detailed cleaning to prevent problems.  You can find that in the manual as well. 

     

    I almost forgot,  You can use a ohmmeter to test the sensor.  j10 is the sensor wire and must be open when off.  Page 53 in the manual.

  • boodro

    Member
    February 26, 2019 at 9:44 pm

    I did all of this an keeps shutting down on Short Freeze

  • fixbear

    Member
    February 27, 2019 at 5:48 am

    You will notice that when the machine goes into freeze cycle,  and it has done the flush and continuity test it will pause the pump for 30 seconds.  after that watch the harvest ready light.  As water hits it it should flash a little and as the ice forms on the bridge the flashes will get longer.  Once the LED stays on for 5 seconds solid it tells the machine to harvest.  If it is happening too quickly you get the alarm.  This means that the sensor is tricking a harvest under 6 min 3 times. 

     

    Some times environmental placement of the machine will cause problems.  Things like level,  Humidity, airborne grease and cleaners, water temp and quality, Ambient air temp.  .  But the big one that bothers the sensor is strong acids or alkalis,. Wether it is on the insulator or wire of the sensor doen’t matter, as any conductivity will trip the machine.  We have to use both to clean and sanitize,  but it is recommended to use the cleaner at 1/2 strength on the sensor.  Rinse and dry completely.  Scotsman has even issued a recommendation to blow dry with compressed air because the sensor is so sensitive to moisture in the wrong place.. They have also redesigned it a few times. 

     

    Frequently techs miss the spillway problem.  It is the biggest cause of short freeze sensing.  The spray bar and sensor have to be removed to clean the spillway.  One also has the break down the spray-bar to clean it inside.  There is also a service bulletin out on the spray-bar mount.  Mount sagging as I recall.  I’ll see if I can find it for you.

     

    The Prodigy’s are a good machine and easy to trouble shoot,  But require attention to detail when working on them.  And can be very frustrating.  Especially with bad water. The CO’s are a far cry from the old CM’s or CME’s. that were loved for the contour cube they made.

  • fixbear

    Member
    February 27, 2019 at 5:53 am
  • boodro

    Member
    February 27, 2019 at 4:00 pm

    ok now it did a harvest, but the first alarm came back. MAX HARVEST code

    Flashing 2. I installed the new Harvest silenoid was not sure if I

    needed to install the lift bracket it came with or flat against the wall

    with out the lift bracket.

    • Sanchezhvac

      Member
      December 29, 2020 at 9:16 am

      What was causing the alarm? I’m having the same problem.

  • fixbear

    Member
    February 27, 2019 at 6:59 pm

    The shaft that pushes the ice off should be flush to the evaporator.  Not protruding.  How thick was the ice bridge?    This may help;

  • klamath

    Member
    February 28, 2019 at 10:53 am

    Clean the temperature sensor, adjust the gross ice (ticker). And turn on. If appear code 2. Turn off and turn on again for 3 times.

    You helps the ice to fall.

  • fixbear

    Member
    December 29, 2020 at 2:34 pm

    Sanchezhvac, Which of the codes are you referring to? 2 or 8. Always start by cleaning the machine with Scotsman cleaner. Most codes will go away after cleaning

    With code 2, it means that the harvest was longer than 3.5 min. Flashing means it’s retrying, solid is locked out and shut down. The ice sheet has a 1/8 to 3/16 bridge so that it comes off as one piece and opens the curtain. On the right side is a magnetic reed switch that tells the controller it opened. It is also indicated with a LED (curtain) on the board. This is most often from not cleaning the machine with Scotsman cleaner. But can also be from harvest assist or hot gas valve.

    Code 8 is short freeze time of less than 6 min. This is caused by the thickness sensor shorting to early. Usually mineral build up or spray bar flow. The ready to harvest LED indicates this sensor. So it’s easy to watch if it is conducting current. It is normal to see it flash in the beginning of the freeze cycle. But it sends the machine into a time freeze after it sees a solid sense for 30 seconds.

    Some things change with the “D” model. As well as whether it is air cooled, water cooled or remote condenser. So it’s important that we know your full model number. All this is in the service manual above. To work on a ice machine , you have to understand how it works and what does what. Otherwise you’ll chase your tail around and replace unneeded parts. A good part of ice machine repair is watching what it does and understanding when it should do what. Highly recommend reading the service manual.

    • fixbear

      Member
      December 29, 2020 at 2:46 pm

      I should also mention that if the compressor discharge temp is to low, the controller will shut the fan off on air cooled models before entering harvest cycle. This is to ensure there is adequate heat for the hot gas harvest. The thermistor can be tested with a ohm meter for this.

  • Sanchezhvac

    Member
    December 29, 2020 at 3:56 pm

    When I got to the ice machine there was a Code 2 Max Harvest Time. It looked like the harvest assist probe wasn’t pushing out all the way so I manually pushed it in and out a few times. It made ice twice after that without no Code 2. Then the third time it wabout 6-10 minutes into the freeze cycle it started to flash Code 8. So now im trying to see what these two codes have in common.

  • fixbear

    Member
    December 29, 2020 at 4:33 pm

    What I’ve seen in the field that commonly does what your saying, is a dirty machine. Mineral build up on the evaporator creates surface friction that delays the sheet from separating from the evaporator. Minerals build up on the spray bar and water shelf disrupts the flow so that the sensor trips the controller early. If you remove the top and watch behind the curtain the thickness sensor, you’ll see water flowing off the shelf and hitting it instead of softly flowing down the evap. If you have a “A” version machine, check the spray bar and mounts. They had to be updated because of this.

  • fixbear

    Member
    December 29, 2020 at 4:45 pm

    I should explain the harvest assist probe. It only has to push the ice sheet out enough to break the suction from laminar flow. Once air get’s behind the sheet, Gravity takes over after that. Other machines use a air compressor to break the vacuum. Older machines just had a longer harvest. It’s all because of the EPA energy ratings and why Scotsman no longer can make their highly revered “Contour Cube”. Bars loved them. Big looking drink with very little in it but ice.

  • Sanchezhvac

    Member
    December 29, 2020 at 6:00 pm

    Now I’m scratching my head because this machine was just cleaned. Not sure how much more we can clean it. I can probably run some cleaner though it again and see if it makes any difference. How have you seen the harvest assist probes fail?

  • fixbear

    Member
    December 29, 2020 at 7:49 pm

    Rarely on the harvest assist probe. Look at it from the back for a cracked plastic.

    Did you clean fully and disassemble like the manual says? Is the spray bar reassembled correctly? Did you remove and hand clean, soak, rinse and dry the harvest sensor. Very important! Did you remove the spray bar, clean the flow edge and spray bar internally as well as externally? Usually the flow edge needs a green scrounge (3-M) to get fully clean and smooth.

    Go to page 38 in this manual for more on cleaning. Again, inspect the spray bar mounts. They had problems that caused what you are describing.

  • Sanchezhvac

    Member
    January 4, 2021 at 12:19 pm

    Another thing what the normal freeze cycle time?

  • fixbear

    Member
    January 4, 2021 at 3:55 pm

    That depends on the model. A full cube takes longer than a half or dice does.

  • Sanchezhvac

    Member
    January 4, 2021 at 4:00 pm

    I have C1848SW-32A. It has a left and a right evaporator. I have done everything and still getting the Code 2 Flashing. I believe all the Nickel plate is gone on the evaporator grid.

    • fixbear

      Member
      January 4, 2021 at 5:05 pm

      Ouch! That means someone used a cleaner other than Scotsman. If the Nickle plating is damaged you have two choices. Both are expensive. Replace the evaporators or the machine. It will not meet heath codes if flaking. Be aware that aluminum is a serious health risk today as causing altimeters. Down the road I’m certain their will be lawsuits on this. After all, how many sites use Aluminum pots today. The problem is that sometimes they put a acid based product in them. Like a marinara sauce. We are all going to see more on this in the future. With Ice machines we are seeing lower ph with our water supplies. Part of the acid rain I guess. And it’s eating evaporators. Depends on what part of the country your in. If you water supply is chlorinated. not a problem as chlorine is a base (12 ph) that buffers the water into the 7 to 8 range. But if your customer is operating off a well or spring, everything goes out the window.

  • fixbear

    Member
    January 4, 2021 at 4:49 pm

    There are many variables to the freeze cycle. Water temp, air temp are the main ones. The machine actually learns it’s location over time. So no 2 will be the same. Suffice it to say that 6 min is the minimum and 45 is the max.

    But when it comes to cleaning, it requires the disassemble of the curtain, spray bar, thickness sensor and water level sensors. If this isn’t done, it’ hasn’t been cleaned. One also has to scrub the top spillway. Anything less will cause problems with the Prodigy’s. One also has to be aware of the water supply and how hard it is. They don’t like minerals! Filtration is a must. And sometimes injection.

  • fixbear

    Member
    January 4, 2021 at 6:52 pm

    Sanchez, you should be aware that that model “A” series had a spillway problem. I can’t find the tech bulletin, but the service kit is here

  • Sanchezhvac

    Member
    January 4, 2021 at 6:58 pm

    I am aware of the spillway issue they have. I don’t think its a spillway issue. As it has a 10-12 minute cycle. Its getting thick enough ice and no water is hitting the ice thickness sensor. The problem is that ice starts sliding out about 2.5 minutes into the harvest. By time the second ice drops it has maxed out on harvest.

  • fixbear

    Member
    January 5, 2021 at 8:51 am

    Is it coming out as a sheet? Fully formed and even?

  • fixbear

    Member
    January 5, 2021 at 9:09 am

    Check that both curtain switches are functioning correctly. Watch the SW1 and SW2 LED’s as you slowly open the curtain.

    And are both evaporators harvesting? Your model indicates a half dice. So you may have a harvest assist problem with one of the evaporators.

  • fixbear

    Member
    January 5, 2021 at 9:39 am

    I just read back thru your post from the 29th of Dec indicated you had to push the harvest assist in. They should retract by spring pressure. If a pin stays out even partially, the ice will form around it and delay harvest as the pin does not have any heat like the evaporator.

    Hope this helps.

  • Sanchezhvac

    Member
    January 5, 2021 at 11:13 am

    Both curtain switches are working properly. For the harvest assist, I wasn’t sure how they worked, but after talking to someone they told be the harvest assist should start to move when your Hot Gas light is on. I was thinking the harvest assist was not pushing the ice out because it seemed like it was moving forward than stop. As far the ice ot is falling off as a full sheet. What do you mean by half dice?

  • fixbear

    Member
    January 5, 2021 at 12:33 pm

    BTW, your machine is a “A” before 2009. Probably about 2007. The harvest assist were recalled on them. Your’s may have been missed. These are the bulletins still on file;

    August 09 First change

    In 2013 with the “D” model they dropped the solenoid type for the more standard gearmotor type

    Harvest update.

    But they also had problems with the controller on the double evaporator machines going into freeze before both had a full harvest. On the back of the board there should be a white sticker with the version number. a 5 or lower is a problem.

    Controller 1

    Controller 2

    Be aware that if you have a partial sheet during harvest, You may want to check the dump valve for function. If it doesn’t open, water continues to flow over the evaporator and starts melting the bridge. Causing the sheet to break each side of the harvest assist and only a portion to drop.

  • fixbear

    Member
    January 5, 2021 at 12:34 pm

    The smallest cube they make.

  • HakimJacob

    Member
    January 7, 2021 at 9:53 am

    Hi….the Prodigy blunder code demonstrates that the Prodigy has experienced short freeze cycle, a couple of times. On the off chance that the ice machine’s collect cycle is set off before 6 minutes into the freeze cycle this blunder code will happen. Understanding the grouping of activity and part capacities will assist you with seeing how to analyze this issue and how to tackle it. One of the primary parts to take a gander at is

    the ice thickness control. You can discover it holding tight top of the evaporator plate, behind the ice shade. This is the place where the ice is made. The ice thickness control is appeared in the image above. This sensor is genuinely near the evaporator plate and as the ice expands the water streaming over it starts to draw nearer to the sensor. Whenever water has connected with the sensor for a couple of moments it will flag the regulator that it’s prepared to collect the ice off of the plate.

    https://www.7pcb.com/

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