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Re: machine takes long to harvest
How many beeps this is a code telling you the machine has a problem Also about 90% of Ice Machine problems are due to the unit not being cleaned. Let me know the # of beeps and I will let you know the problem from the manual
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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.
time the cycle. if it is only running about 5 minutes and going into harvest, look for sump loosing water. Look at where the unit drains (like a floor drain) while the unit is running to see how much, if any water is draining. does not take much to make an early harvest. also, sump may not be filling up completely but with just enough water to satisfy the float.
Hoshizaki machines must have a very clean evaporater other wise the ice will bind causing a slow harvest. This may be from lime scale build up. "Lime A Way" is recommended for this proper cleaning. After that is done check to see that the water inlet valve screen is clean and that you have a filter installed. Last check the thermister attached to the suction line. http://www.hoshizakiamerica.com/techtips/Pdf/All/tips105.pdf
The main problem with Hoshizaki machines is if you are in a hard water area, if so do you have a good quality water filter, it may need changing. A quick way to check for calcium ot lime deposits in the machine is
1. Turn it off, run you clean hand around the area near the evaporator, are there any rough or flaky deposits there, if so you may need a chemical descale, contact a reputable fridge guy to do this for you.
2. The swinging arm motor may be faulty or possibly the ice sensor which controls the harvest cycle. If this is faulty sometimes the tray goes back up before the ice has slid off.
3. If the machine is situated in a cellar or other cool (less than 10 deg C / 50 deg f) this can sometimes affect the harvest cycle again to set this you need a tradesman.
4. Does the water flow properly over the lower part of the mould plate during a harvest cycle, the pipe can become blocked or dislodged.
2 beeps every 3 seconds indicate that the unit has been in the harvest/defrost mode for 20m minutes. If you are absolutely sure that the freon level is correct, check for a water problem. I have seen many a problem corrected by ensuring that the incomming water flow was correct. If you have water filters, change them. In many cases, at the very end of the harvest cycle, the unit goes into the freeze cycle but it brings in ground temp water which actually "rinses" off any laging cubes. I've done this many time with great success. But the freon level has to be exactly correct before doing anything else. Especially in cold weather, it is major important.
Hope this helps.
This is the safety telling you it is staying in defrost (Harvest) cycle for more than 20 minutes. In most cases it's either a low freon level or a back head pressure device commonly called a "Head Master". Needs to be checked out by a trained tech. Not a simple fix.
Hope this helps.