20 Most Recent Hoshizaki Commercial Freezer KM-500MAH - Page 5 Questions & Answers

When first turned on, the sump should fill with water. If it does, water solenoid is good. If you have a full sump, and no water pump running, sometimes the "Ice/Off/Wash" switch is bad. Put switch in wash, if pump runs, it's good. Now put in Ice position, if sump fills and pump does not come on and compressor indicates it is in the freeze cycle, replace that switch first. Simplest place to start and lest costly to fix.

If compressor is running, check the float switch. It may be stuck.

There is a "Dump Valve" that is stuck or has trash in it. Follow the small tube from the pump to the white plastic valve that looks kinda triangular with 3 screws. Remove the screw carefully as this is spring loaded. There should be a black rubber piece that is a seal. Pay attention to how it assembles. The spring presses the seal against an opening. Look for something that may be allowing this not to seat.

The machine, all in one, not indoor/outdoor split type, will make beeping sound when something is wrong and stops working until it is turned off and turned back on. Some times the machine needs to be reset with the power on, covers removed, reset button inside on electronic mother board.
The ice machine covers have instructions and information on beeping sounds.

with no model number, I can only answer this way: most all Hoshizaki machines use at bin thermostat to send power to the control board. If the thermostat is bad, nothing works. As long as you have the right power and no blown fuses, look at the bin thermostat.

http://www.hoshizaki.com/docs/manuals/KMD-410M_H_serv_LTR.pdf Try this site for a manual. The ice thickness is controlled by the float switch. Most all Hoshi machines have adjustable floats. It starts the harvest as the water level drops.

I have found that if the pump runs in the wash cycle but not in the ice making postion, the switch is bad. strange but I have had this happen multiple times.

3 beeps means freeze cycle too long. usually it's a stuck float or a water valve leaking most all the time. A low refrigerant level, weak compressor, bad TXV, or a leaking hot gas valve are usually secondary issues but not very common. In rare cases, the evaporator plates can separate from the refrigeration tubes. look at evap plates at the bottom and top and see if they are bowed or odd shaped.

with not model or serial numbers, I can only suggest that it may very well be the "bin stat". This is a thermostat that has a sensing bulb that is in the bin and senses the ice when it touches it to shut down the machine. If this is bad, no power goes to the control board. Try jumping this out with a jumper wire and see if the machine comes on.

These machines do not work like you think. The display will show the defrost mode even when in the freeze cycle. After a defrost cycle, the cooling system comes on but the display will not show any temperature numbers until the conditioned space gets to within 15 degrees of where you have it set to cool to. So, if it is set to 0, the box needs to hit 15 degrees before it shows numbers. You have a cooling problem. Several thing can cause this. may need a tech to check.

Replacing restricted TXV Hoshizaki Ice machine!

What does it do if it will not make ice? Does the water circulate? Here are a couple service manuals=> IM-51BAE and the IM-51BAE-B Here is a link to their support site Contact Us Manuals Page HERE I am here to try to answer your questions so please let me know Thanks Sea Breeze

always send model and serial numbers to get the best answers>

the wiring diagram shows that if the bin thermostat goes bad, it will not send power to the control board and noting will run. look for that first, could be a simple fix.

Would you be more specific, please? If you are considering replacing an evaporator plate on the machine, I'd advise against it unless you are in the trade,

probably not. make sure the machine is level. be sure the drain is unobstructed.

pump bad. not cheap. good luck

chattering relay can cause compressor to over heat. replace that first and see if that does not resolve your issue.

check filter and screen at water cylinoid valve