Okay thanks, XXXXX XXXXX is the mother board has failed. appliancepartsimages.com/dbImages/00003628/01091472.jpg" alt=""/>G.E. had to redesign these boards 4 times because of issue's one of which is the issue your having. this board is located on the back of the refrigerator behind an 8X10 " cover. if you pull the refrigerator away from the wall you will see it. you need to order and replace the board. its part number WR55X10942. you can pick one up locally or order this one line at the link below.
control board--- > http://www.repairclinic.com/PartDetail/Main-Control-Board/WR55X10942/1531075?modelNumber=PSS26SGRESS
this will fix the issue. thanks and best wishes, Bryan
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