Meaning of C28 error code for G12010 Traulsen freezer

https://my.hobartcorp.com/resourcecenter/ProductDocumentation/TR35924%20Owners%20Manual%20Quick%20Guide.pdf. See page 2 to see if these steps will help to reset your control.

Hi, This can tell us many things such us : -; Compressor malfunction - Low refrigerant level - Thermostat wrong setting or malfunction - Door ajar - etc.
My suggest go check and fix ( if any problem) with first 3 items above ( these item have potential problem that cause you never reach your intended temperature).
regards,

http://hvac-talk.com/vbb/attachment.php?attachmentid=1811&d=1177291274

https://feg.hobartcorp.com/resourcecenter/ProductDocumentation/TR35748%20G-Manual%20(3-09).pdf
https://feg.hobartcorp.com/resourcecenter/ProductDocumentation/TR35748%20Rev%201004.PDF

see if you can check out these manuals. They are on the Hobart/Traulsen web site. Both have instructions on how to set the controller for temps.

dear sir/madam

please find out temperature control switch on control panel then make it on ideal setting. for freezer 0 Fahrenheit (-18 celsius) for storing food and -10 fahrenheit (-23 celsius) is recommend when freezing food. please set on ideal setting.

hope answer the question
thank you
please vote!

Hi,

As the weather is getting warmer for many people their freezer and/or refrigerator do not work right because of a dirty condenser coil...

Check out this tip that I wrote about that... it is a great place to start trouble shooting your unit...and something that you can do rather then calling a repair person to do a simple thing for you...

Refrigerator Condenser Coil Cleaning Refrigerator Repair
http://www.fixya.com/support/r4024657-refrigerator_condenser_coil_cleaning

Refrigerator Troubleshooting Refrigerator Compressor
http://www.fixya.com/support/r3885294-refrigerator_troubleshooting

Refrigerator Compressor Start Capacitor and Start Relay
http://www.fixya.com/support/r4023749-refrigerator_compressor_start_capacitor

heatman101

Check to see if there is correct,complete power to the fan. If not, look for a fan delay that may be attached to the evap. It comes in many configurations. It may have two or three wires going to it. They may be two black wire or 3 wire of different colors. Power goes to the fan thru this device. It may not be working or the evap not getting cold enough to activate it. I will need model and serial to help more.
Let me know what you find.

try using manuals online or try this site www.commercialappliance.com

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

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.
You can turn the defrost timer till it clicks and everything shuts down. The heater should now come on. If it does, replace the timer. If it doesn't, check the heater and defrost thermostat. Turn the timer again till everything starts back up to end the defrost cycle.



Part 257 on this diagram is your defrost timer http://www.searspartsdirect.com/partsdirect/getSubComp.pd?modelNumber=TFX22JABAAA&productCategoryId=0165000&brandId=0432&modelName=REFRIGERATOR-B-SERIES&diagramPageId=00005&componentDescription=FRESH%20FOOD%20SECTION&documentId=E2134230&backToLink=Return%20to%20Sub%20Components%20list

The refrigerant level is low. The only thing is that the unit may not have a low charge. There can be several things that cause the unit not to refrigerate properly. It could have weak valves in the compressor or even a bad TXV(thermostatic expansion valve). Have you had this box repaired yet.? I see that this is an old post.