Question about Hoshizaki Freezer Commercial Ice Machines - KM900MRH Commercial Ice Machine

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Defrost cycle keeps running - Hoshizaki Freezer Commercial Ice Machines - KM900MRH Commercial Ice Machine

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If unit never enters the freeze cycle, usually it is a stuck flow which located in the front of the machine. White plastic with a black rubber boot on the bottom. May need cleaning or replacing. You have to drain water out of machine prior to removal.

Posted on Feb 11, 2017

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Posted on Jan 02, 2017

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The breakers at the electrical panel keeps tripping, would work fine for awhile then it trips


Sounds like a shorted defrost heater, it shorts after a period of running when the machine initiates a defrost cycle... Defrost Heater Assembly 242044113

Mar 18, 2016 | Freezers

1 Answer

Fridge freezer stoping after 24 hrs


most of these freezers have an automatic defrost cycle.
after so many hours of chilling it will stop and run a de-icing cycle.
this is accomplished by one or two heating elements.
if one of the elements is burned out it will not run the defrost cycle.
and will ice up quickly.
depending on the model the heaters will usually cost about 15 to 20 dollars and they are easy to replace.
look up the model of your freezer and download the pdf files they will usually have a pictorial diagram showing the location
a defrost timer usually does nt fail on them unless it is physically damaged.

Aug 31, 2013 | Freezers

1 Answer

Our sub zero seems to defrost in cycles. Not sure why ice cream melts in there while other meats remain frozen. Is this an expensive problem?


Hi,
The defrost may be lasting too long....and ice cream is always the first thing to melt... you need at least 10 F to keep ice cream hard...
Check out these tips...they can help you figure out whats going wrong with your refrigerator and why it is not cooling

Refrigerator not Cooling or Fridge not Cooling

How to Defrost Refrigerator Defrost Timer Problem

Water Running in refrigerator from Freezer

heatman101

Sep 08, 2010 | Sub-Zero Freezers

1 Answer

Frost on wall


Hi, The defrost heater may not be working properly (timer stuck, heating element burned out, bad defrost thermostat,etc.). The unit should go into defrost mode about every 6-8 hours typically and last about 30 minutes (depending on model of freezer). During defrost cycles the compressor and fan do not run (don't want to keep cooling while trying to defrost). Once defrost is over, the fan and compressor get power again.
Take care

Jul 17, 2010 | Woods Freezers

1 Answer

Ice builds up in the freezer


Hi, The defrost heater may not be working properly (timer stuck, heating element burned out, bad defrost thermostat,etc.). The unit should go into defrost mode about every 6-8 hours typically and last about 30 minutes (depending on model of freezer). During defrost cycles the compressor and fan do not run (don't want to keep cooling while trying to defrost). Once defrost is over, the fan and compressor get power again.
Take care

Jul 17, 2010 | Woods 201 cu. ft. Upright Freezer V2003RW3

1 Answer

True model gdim-26. runs fine unitl defrost then does not keep cold after defrost.


Hi, sounds like your defrost clock is stuck in the defrost mode. On most true boxes they have a paragon defrost clock with adjustable pins you can set the amount of cycles and duration of the defrost cycle. Find the clock and give it a turn in the direction of the arrow or cw. It will come out of defrost and start to freeze again. If it continues, you may need a new clock. Let me know what you find. Keep me posted. True boxes are top of the line
Sincerely,
Shastalaker7

Mar 23, 2010 | True 26 cu. ft. Commercial Freezer GDIM-26

1 Answer

I have an older commercial upright Hobart freezer. The freezer seems to operate fine, cycling but always returning the compartment to zero degrees, until all of a sudden the temperature went up, well...


In most cases, an evap that freezes up is either an air flow problem or no defrost cycle. Older Hobarts have mechanical defrost time clocks. It could be locked up i.e., not running so no defrost cycle.
It could be coming out of defrost too early because the sensor that monitors the evap temp is not working properly.
The door could not be closing. If left cracked open, it will freeze up every time as unit never hits temp., keeps unit running. Warm air is seeping in and the moisture freezes on evap.
Lastly, the defrost heater(s) may not be working. Burned out, shorted, broken wire, etc.

Good luck and hope this helps.

Mar 28, 2009 | Victory Commercial Freezer VSF-3

1 Answer

Just defrosted my freezer and is akll frosted over


When you say it is frosted over, do you mean the interior of the freezer is frosted, or the evaporator coils?

A couple things to check for:

1. Is the door gasket making a good seal when you close the door? A good quick fix for a bad seal on the gasket is to rub a thin layer of Vaseline (the original jelly kind works best) on the rubber to help it stick and to fill any scratches that might be keeping it from sealing tightly.

2. Is the fan running on the inside of the freezer? The evaporator coil in the freezer needs a fan to blow air over the coils to keep them from freezing over. They don't run continuously, and on some units will turn off when the door is open, so try holding the door switch shut when you check.

3. Is the defrost cycle working? Frost-free freezers have a defrost cycle in which a small heater turns on to thaw any frost that has begun to form. To check the functionality of the heater and the defrost timer will probably require a visit from a technician... It would take a while to explain it here, but if check the first two and come up empty handed, post back. You will need a volt/ohm meter.

I would check the first two

Mar 24, 2009 | Whirlpool 16.7 cu. ft. / 473 liter Upright...

1 Answer

Freezer won't start after defrost cycle


It might be the timer motor, if it doesn't run. neither does the timer. Easily replaceable and cheap. good luck. John

Nov 07, 2008 | Frigidaire 13.7 cu. ft. / 388 liter...

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