Question about Hoshizaki Commercial Freezer KM-500MAH

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Hoshizaki ice machine with constant beeping every 3 seconds

Model number KM 500 MAE is not making ice and this constant beeping noise every 3 seconds

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  • eevader Sep 14, 2008

    Yeah i have the same problem . beeping noises every three seconds and when pressing ice machine black push button. no ice will come out?? please notify me e-mail at eevader@aol.com. thank you

  • Anonymous Oct 10, 2008

    comes on for about 3 seconds and go off and a beeping gos off and on and machine will not come on.

  • Anonymous Oct 10, 2008

    machine comes on and then it will start peeping

  • HoshizakiIce.com
    HoshizakiIce.com Feb 01, 2012

    As part of the EverCheck System, the beeps are to help diagnose problems with the machines. Built-in safeties shut down the unit and have alarms as listed below:

    Number of Beeps Every 3 Seconds Type of Alarm and Notes
    1 Beep High Evaporator Temp. (temp > 127*F/ 53*C)
    Check for harvest problem (stuck HGV or relay), hot water entering
    unit, stuck HM, or shorted thermistor.
    2 Beeps Harvest Backup Timer (harvest>20 min, 2 cycles in a row)
    Check for open thermistor, HGV not opening, TXV or LLV leaking by,
    low charge, inefficient compressor, or WRV leaking by.
    3 Beeps Freeze Timer (freeze > freeze timer setting for two cycles in a row)
    Check if float switch stuck closed (up), WB leaking by, HGV leaking by,
    PM not pumping, TXV not feeding properly, LLV not opening, low
    charge, HM not bypassing, or inefficient compressor.
    To reset the safeties above, press the "ALARM RESET" BUTTON
    WITH THE POWER SUPPLY ON.
    6 Beeps Low Voltage Red LED turns off if voltage protection operates. The control voltage
    7 Beeps High Voltage safeties automatically reset when voltage is corrected.
    At startup, a 5 second-delay occurs while the control board conducts an internal timer check. A beep occurs when the control switch is moved to the "ICE" position. www.hoshizakiice.com

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  • Hoshizaki Master
  • 460 Answers

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$.

Posted on Nov 06, 2015

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  • Master
  • 462 Answers

I believe if you remove the thermostat wires and put them together and retry it you'll be making Ice, then get you a new thermostat. Please rate me accordingly and good luck.

Posted on Mar 20, 2009

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