Question about Beverage-Air 44.9 cu. ft. / 1271 liter Commercial Freezer KF48

1 Answer

Freezer problem kf 48

Freezer wont stay cold ,compressor runs a lot ,evaporator frosts up,is it freon, thermostat or something else? please advise.

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  • bobalix Apr 15, 2009

    The evaporator fans are running .
    is running steady and does not make temp.


  • Dennis Boxerman May 11, 2010

    Frosting up on evap can be several things. A door not sealing. No defrost cycle or malfunctioning defrost cycle. Improper refrigerant level. Dirty condenser. Intermittened problem with evap fan (stops and starts). Some evap fans are controlled by door switches and they may not always function correctly.

    Check a few of these and we can continue to resolve this issue.

    By the way, the t'stat cycles the unit off and on based on temp of the conditioned space. If the space does not make temp, it should be running, so t'stat is probably not the issue at this time.

  • Dennis Boxerman May 11, 2010

    Is the evap fan running? Does it ever make temp?

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2 Answers

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watch this video I made. this is subzero with low level of freon (almost out). same situation on all refrigerators and freezers. you can see ice at the begging of evaporator. if there would be a little more freon evaporator might of frost up at the top might frost half of evap other half would be not even cold.

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. Cut everything off for a few minutes then turn it back on and listen for a click from the compressor relay as the compressor tries to start.
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Are the condenser coils on the back warm or room temp. should be warm


How to check stuff>
http://www.acmehowto.com/howto/appliance/refrigerator/refrigerator.php

evaporator coils are behind the rear cover inside the freezer at the bottom.
observe the frost pattern. Light frost everywhere(NORMAL) or a partial pattern of ice(LOW ON FREON) or nothing(LOW FREON OR COMPRESSOR PROBLEM).
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If the evaporator coils behind the back panel of the freezer are icing up because of auto defrost failure that will stop the circulation of cold air and eventually affect the freezer too.

check defrost timer, defrost heater, defrost thermostat. In most newer models the timer has been replaced by an electronic control board. If the heater and thermostat are ok it’ll be the control

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COMPRESSOR RUNS, AND IS HOT TO TOUCH, FREEZER WONT STAY COLD IF O


either your evaporator and condenser coils are very dirty or your low on r22 freon

Jul 31, 2009 | Freezers

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Freezer Thawing Out


This will not cause a freon leak and it is possible that the door was left open, but to be certain that you don't have a defrost issue, follow the guide below to diagnose any problems. Also the warm walls are normal during compressor run times.
Below is a link that will help you with parts and diagnostic procedures that are specifically tuned to your manufacturers data plate information.
http://www.repairclinic.com/0047_3.asp
If your freezer cools but doesn't get cold enough, it may have a problem in one of several areas. To better understand the proper operation of a freezer, read about freezers in the How Things Work section of our website.

In a self-defrosting freezer, poor cooling often results from a heavy frost build-up on the evaporator coils. You can't see these coils without removing a panel inside your freezer. But if you see any frost or ice build-up on the inside walls, ceiling, or floor of your freezer, it's a sure sign of frost build-up. And that's a sign of a problem with the self-defrosting system.

Freezers should self-defrost three to four times in 24 hours. But if a component in the self-defrosting system fails, the freezer continues to try to cool, instead. Eventually, so much frost builds up on the evaporator coils that the circulating fan can't draw air over the coils. There's still some cooling because the coils are frozen. But with no air flow over the coils, the cooling is quite limited and the freezer isn't as cold as it needs to be.

An easy (though often inconvenient) test of whether the problem is with the self-defrosting system is to remove all of the perishable food from the freezer, turn the thermostat to Off, and leave the door open for 24 to 48 hours. (Keep several towels handy in case the melting frost and ice overflows the drip pan). This "manually" defrosts the freezer. When the frost and ice build-up has completely melted away, turn the thermostat back to a normal setting. If the freezer then cools properly, it indicates a problem with one of these components in the self-defrosting system:

  • The defrost timer. To test this, manually advance to the defrost cycle. The unit should advance itself out of the defrost cycle in about 45 minutes.

  • The defrost thermostat (or bi-metal switch). This thermostat allows current to pass through it at temperatures of 20 to 30 degrees Fahrenheit and prevents current from passing through it at 40 to 60 degrees (depending on its design). This is difficult to test, though, because it takes a prolonged, very-cold temperature to turn it on.

  • The defrost heater. You can test this for continuity using an electrical meter.
If my assistance helped resolve this issue, please show your appreciation by rating how effective my advice was in resolving this issue.
Thank you,
Dave E. (Illeagle)

"Your satisfaction is my personal reward"


Jun 19, 2008 | Frigidaire Freezers

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