Model gss25jetabb. Where can I find the defrost timer?

Great Majority Combo: Refrigerators Freezer Have Defrost Timers. .IF Has a FREEZER Will Have Defrost Timer ! .Many have defrost timer Below on LH or RH Walls at Bottom by Compressor Compartment..Others Have Timer on upper Partition Wall/Ceiling of refrigerator between Refrigerator & Freezer By Thermostat Long Protuding Cover.( .IF Provide Brand Model # & Serial # Of Refrigerator Most likely will get more accurate Location of Defrost Timer

Are you sure about the model number being MTF2153GES? Usally when the fresh food section warms up it is an indication that there is a problem with the defrost system. If your model number is correct MTF2153GES then the refrigerator has a defrost timer behind the controls inside the fresh food section. I need to see if the defrost timer is stuck and causing the refrigerator to miss defrost. The defrost timer is=> 68233-3 Defrost Timer Let me know about the model number so I can continue to help solve this problem. . I am here should you need me, Thanks John Tripp Appliance 911
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Kenmore Model Numbers Look Like 795.513012

Turn the timer slowly clockwise until the compressor and fans stop. Leave the timer alone in that position that turned the compressor and fans off for up to 35 minutes. In the first few minutes after the timer turned fans and compressor off you should be getting defrost. If timer comes on by itself and you have defrost results the timer and defrost heater are good. If the timer does not turn the refrigerator back on but the defrost took place then replace the timer. Every different refrigerator or freezer has a different amount of time on for cooling and time off for defrost so it is important to know what the model number is to answer the part number and time off/on ratio. What is the model number of the refrigerator that the timer is on? Sea Breeze

If your model you listed is a TFX27PRBWW it will have a defrost timer located in the fresh food compartment and behind the controls. It's location is 257 in this photo HERE I would like you to turn the timer clockwise slowly until youi hear the compressor and fans stop. This should put the refrigerator into defrost if the defrost heater is still working. Did you hear any crackling or sizzle when place into defrost this way? Wait up to 35 minutes for the timer to come out of defrost and it should restart the refrigerator compressor and fans. If it does not come on automatically then simply turn the timer slowly clockwise again until they do restart. If you need to turn timer again to start refrigerator you will need to replace the timer=> WR9X489 Defrost Timer

If the defrost timer is not the problem then we move to the freezer side, remove the rear panel of freezer and defrost the frost covering the evaporator as in this photo HERE The model TFX27PRBWW takes a=> WR51X10055 Defrost Heater Assembly

and the defrost thermostat=> WR50X122 Defrost Thermostat

The defrost heater is location 230 and the defrost thermostat is location 24 in this photo HERE Instructions in testing these parts are located on the parts pages I listed above. Please let me know if the model number is different than the one above your post so I may help you better, Thanks Sea Breeze

A DEFROST TIMER is a cycling device, it times the frequency and duration that the defrost heater coils melt the ice that builds up around the evaporator coils. If ice is allowed to build up, air will not be able to freely flow past them - resulting in reduced efficiency and sometimes a drastic warming of the cooling unit.



Most of the time, the defrost timer is in the cooling mode, allowing the compressor to activate when the thermostat signals it to. The remaining part of the cycle (usually less than 30 minutes)the timer is in defrost mode. In this mode, it signals the defrost heaters to melt the ice build up on the coils. This defrost action is limited by the defrost thermostat. If your DETROST TIMER go to bad, one symptom would be if your refrigerator is not cooling. Although there are many causes of this symptom, A stuck defrost timer can be one of them. The timer can get stuck in cooling (compressor activated) or defrost mode (defrost heaters activated) for usually two reasons:
- The timer motor can fail for one.
- The gears can also become locked up.

No matter what the reason is or which mode the defrost timer gets stuck in, the refrigerator can stop cooling. When the refrigerator is stuck in defrost mode, the compressor no longer comes on to cool the unit. If the timer gets stuck in cooling mode, the evaporator coils never get a chance to defrost, causing ice build-up to the point where there is a complete blockage of airflow past the coils.

The defrost timer can also cause the refrigerator to stop cooling due to failure of the internal switch which activates either the compressor or heater coils. Finally, when doing any repair on a refrigerator, check the condenser coils for dust buildup and clean accordingly.

According woth yur brand and model, look the part replacement in this link: partselect.com/refrigerator+test-defrost-timer+repair.

Good luck.

The timer will advance whenever the cold control is on. (when the compressor is running, or the timer has advanced into a defrost cycle) When the refrig is cold enough (and the timer has not advanced into defrost) the timer will not be advancing. A typical defrost timer will count up 8 hours of compressor run time before going into a 30 minute defrost cycle. (the run time and defrost time can vary greatly from model to model)

Repair the defrost system, defrost timer,defrost thermostat and defrost heater.

you might have a defrost problem. Frost free models have a heating element that is controlled by a timer to automatically defrost ice, defrost timer turns on defrost heating element every 12 hours to melt ice in freezer and allow good air flow.
You can test defrost element with an ohm meter(located inside freezer coils-will have two wires going to a plug connection), if OK replace defrost timer (located in various places depending on make and model

Hi, This model has a mother board instead of a defrost timer. If you are having a defrost issue, the first part you want to test is the defrost heaters. If you need instruction on testing the defrost cycle, please let me know so I can assist you further.

Thanks
Vic

Defective defrost timer, heaters, or defrost thermostat. Locate the defrost timer, rotate the dial (clutch head screw) clockwise SLOWLY until you hear one click. That puts the timer in defrost. Wait 25-30 minutes and the defrost should happen. Normally the timer will shift back to the cooling mode after 18-22 minutes. If it does not restart after the 30 minutes your problem is the defrost timer. Rotate the dial SLOWLY a little more and it should go back into the cooling mode. If you followed the above instructions and did not get a defrost the problem is in the heaters or defrost thermostat.