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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.
compressor overheating when this happens? Feel the top of the compressor when
this is happening and tell me if the top of the compressor becomes extremely
hot to the point that you cannot keep your hand on the compressor. Reason I ask
you to do this is that it is possible that the compressor is short cycling because
of a defective start relay and/or run capacitor. Let me know if the compressor is overheating of simply turning itself off. I will post a service manual if interested but would like to e-mail you the service manual for your Hoshizaki KM-255BAH because of copyright issues. You may contact me HERE if you like. Thanks Sea Breeze
excessive freeze cycle=60 minutes. In almost every case, it's the water valve (sometimes called the fill valve) is leaking water continually into the sump. Turn machine off and see if you can still hear water running into the unit. If so, it the valve leaking. Just replace it. http://www.hoshizakiamerica.com/manuals/KM-500M_E_serv.pdf
Go to this site and download you copy of the service manual. It has lots of good stuff.. Let me know if I can be of any further help.
I have a Hoshizaki KM-250BAF that is making 3 beeps then pauses and them makes 3 beeps again. If I unplug the ice maker and plug it in it continues to make the 3 beeps. The manual does not mention anything about beeps. Can anyone help?
Most likely(50% of the times) Your Ice machine need a real cleaning. not just run clean cycle with ice machine cleaner. every 6 month call HVAC-R guys - machine will last half time longer if u schedule proper maintenance with them. I have seen It all: people try to call "friend", or someone who "knows" how this machines work. Real clean would take up to 3 hours for people who know what they doing. Here is one of my videos, when 3 beeps - long freeze cycle is not common and all others would offer You to get a new Ice Machine. Bill to the owner was 950$, New Machine 3450$ plus labour to install 600$.
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