Where is the defrost timer located on a GE model TFX22KRCE?

Question edited for clarity and correct model nomenclature.

The link says is it part of the motherboard features and not a standalone unit

https://www.google.com/search?q=GE+GSL25JFPABS+location+of+defrost+timer

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Your model doesn’t have a defrost timer. It has a control board that controls defrost and many other functions of your fridge. It’s located behind metal plate on outside back of refrigerator usually just above bottom grille. Heater and defrost thermostat are located behind removable panel on inside back freezer wall. Heater will be at bottom of evaporator and thermostat will be clipped on top of evaporator

Hello:
Your model does not have defrost timer, instead the defrost is controlled by Main control board located on the back of the fridge..
Part # WR55X10942

PS.. Most common defrost problem on this model is not the board. Its either defrost heater or defrost thermostat..

USUALLY LOCATED IN THE FRIDGE AT MIDDLE TOP BUT SOMETIMES CAN BE FOUND IN THE FREEZER ALONG THE WALL

your defrost timer on this model is an ADC type timer(automatic defrost timer) and is located on the mainboard in the lower rear on the back side of the unit,its part # is WR49X10152

The PSS26NSTASS does not have a defrost timer. The defrost on that model is controlled by the motherboard=> WR55X10942 Board Assembly Main Control On your model if not defrosting it will most likely be caused by the=> WR51X10055 Defrost Heater It also does not hurt to replace the=> WR50X10068 Defrost Thermostat
while inside freezer changing out the defrost heater. Click here=> PSS26NSTASS Freezer Components In that photo location 230 is your defrost heater and location 240 is your defrost thermostat. Here is a=> PSS26 Service Manual if you don't already have Adobe Acrobat Reader Click HERE I will be here should you have any questions, Thanks Sea Breeze

If freezer is icing up, 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

you unit do not carry it carry a board it at the back off the unit

Your model TFX20JRBKWWW uses a defrost timer part number WR9X489 located behind the light shield in the fresh foods compartment. (top back area). Just in case you need to know, the defrost heater is a part number WR51X10101 located behind the back wall of the freezer.