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Thermostate on 0 and freezer still freezes into the minus numbers but the frig itself is 10 degrees cooler then room temp.its on propane now, I think its perfreck on elec.Ive replaced the thermocoupler.Its in a 1980 trailer

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Try to buy a new tuner for the fridge. Maybe the switch is damaged.

Posted on Mar 12, 2011

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Kenmore #970-155320 how much cold it has...cant find it its for bed bug killing experiment....


Turned to their coldest setting, most properly functioning household refrigerators can attain minus 6 to minus 10 degrees in a normal (70-78 degrees) room. Room (ambient) temperature affects cooling performance. Colder temps will cause the unit to run significantly more.

Oct 28, 2016 | Kenmore Refrigerators

1 Answer

What is the normal operational pressure in lo/hi side at the compressor of commercial freezer like dispaly case, reach in cabinet or other any low temp refrigeration uses 502 or408A/404a. is there any rule...


why yes there is. Generally speaking, the head pressure should be around the "ambient +30" rule.
That is, measure the entering air temp to the condenser, say 75 degrees. Now add 30 to that and get 105 degrees. Look at a P/T chart and see what the pressure is for that temp which is about 253 for R-404-A.
The evap on a freezer leads the load so, as a general rule, the evap temp is going to be around minus 10 degrees to get a 0 degree box. Coolers are different. So, the pressure for a minus 10 evap is around 25 or so. But the unit has to be close to operating temp. If the box is warm, naturally the pressure is higher. And what influences the pressure is whether or not it's a TXV or a cap tube system.
If a TXV and no receiver, charge by subcooling. If a receiver, fill by sight glass. If Cap tube, charge by superheat.
Hope that answers your question.

Oct 03, 2010 | True 49 cu. ft. / 1388 liter Commercial...

1 Answer

What temp should the frig and freezer be set at


The freezer should be kept at 0 degrees F and the refrigerator needs to be kept lower than 40 degrees but not colder than 32 degerees (so it doesnt freeze)

Aug 14, 2010 | Refrigerators

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Freezer not freezing blowing out 22 degree air obviously not cold


Its been a while since I have done a freezer but I believe they are much lower than that. I think it is more like -10 to 0 pounds. at most 1-3 pounds

Feb 24, 2010 | Kenmore 55612 / 55614 / 5561 / 655619 Side...

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Freezing problem in maytag frig


the probe from the temp panel is not sensing correct temp or the panel itself is bad...call a tech to check it out

Feb 04, 2010 | Refrigerators

1 Answer

Norlake freezer 6x6 not freezing enough


Normally freezers are kept at zero. Most health departments will not allow the temp to be higher than plus 10. If you want to store ice cream, you need to be at minus 10 degrees to minus 15 degrees.

let me know if I can be of any further help.

Sep 29, 2009 | Nor-Lake Freezer Norlake Refrigeration 6'...

1 Answer

Evaporator unit keeps on building ice. question what is the nornal operating pressure on low side and on the high side for truee freezer using 404 refrigerant


I'll try to give you the "Readers Digest" version.
First, make sure there is no ice build up on the evap. Light frost is O.K. as long as it does not effect air flow. (Very Important). All fans need to be running. Again, an air flow thing. There should be some product in the box but not too close to the evap. Again, an air flow thing.
The expansion device can effect your pressures to some degree i.e. Cap tube vs. TXV.
As a general rule of thumb, which I use almost everyday when it comes to pressures:
Low side is based on the temp difference between evap temp and condition space in the box. In freezers, it is almost always 10 degrees. If the box is 0 degrees then the evap needs to be at a minus 10 degrees. That is a pressure for R-404A of 24.5 psi. This only holds true when the temp in the box is approching set temp. I would say, about +10 degrees. 0 Degrees for the evap for R-404A is 33.5 psi.
High side should be ambient temp +30 degrees and then convert to a pressure for the refrigerant.
Example: 75 degrees in the room, +30 degrees equals 105 degrees. Now 105 degrees converted to a R-404A pressure is 253 psi. This will get you very close to the desired high side pressure.
I would look at low side first to see if it is within reason. Don't let the high side get too high. Increases the compression ratio and overworks the compressor.
Your icing problem could be a defrost issue and not a refrigerant charge issue.

Good Luck and hope this gets you started.

Apr 07, 2009 | True 49 cu. ft. / 1388 liter Commercial...

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Everything in frig is frozen and it won't turn off.


If the compressor is running non-stop then the temp. control is not telling it that it's "cold enough". If the compressor isn't running non-stop then you should look at the air damper (little window) that lets the freezer air into the refer compartment... if it's stuck open then you will always get cold air pushed into the fridge eventually becoming a freezer in itself.

Jan 17, 2007 | Kenmore 74844 / 74842 Top Freezer...

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