KENMORE MODEL 253.54362409 KEEPS DEFROSTING

SOURCE: Kenmore 596.75509400 bottom freezer

JH, did you notice if the freezer back panel was full of frost first time it started thawing? If so you may have a defrost problem. I've had 4 of these control boards (jazz boards) fail on this model in the last week. Behind the front grill, there should be a tech sheet that will show you how to run the componet tests at the control board. Part number for the board is 12002339. This board controls compressor, defrost, damper and fans. Catriver.

SOURCE: Whirlpool not cooling properly

I would expect the defrost timer to stay in defrost 21 minutes. IT seems your timer is normal.
If turning the ref section temp colder made compressor come on, it could be that the thermostat is worn a little and just needs to stay on a little cooler setting. Check the freezer temp dial and It should be at just slightly more than 1/2 of available setting. If there is A B C you would want to be a little cooler than B about B and 1/4.
I hope this helps K S

SOURCE: GE TFX22R SIDE BY SIDE

you defrost problem or check condenser fan at the back of refrigerator see if it runs

John Tripp

• 4656 Answers
• Posted on Sep 26, 2009

SOURCE: Stops cooling ice melts and leaks water on the floor

That model refrigerator uses the mother control board for deciding when defrost is to take place. It has no defrost timer or Adaptive Defrost Control like other refrigerators. This sounds like *********** board part number WR55X10942 is malfunctioning. The board decides most functions of your refrigerator. Until the board is replace I do not believe the problem will resolve itself. Thanks, Sea Breeze

SOURCE: freezer defrosting at will; refrigerator side uneven temperatures

Sound like it's going into showroom mode that the same problem we had, by unplugging it for awhile and then plugging it back in usually works if not this what we were told.
Sounds like you have bad thermistors ( # 4 and/or # 5 ) .To access these parts , you will have to remove the inside rear wall of the freezer . The # 4 thermistor , tells the main control board , the temp of the coils , if they need defrosted , when they are thru defrosting . This thermistor is the 1 " long , torpedo looking piece , clipped on the top left of the coils , with 2 white wires going to it . Part number WR55X10025 . It would be advisable to also replace the # 5 thermistor , located at the bottom of the freezer , slightly in front of the drain , also with 2 white wires going to it , slid into a housing . This thermistor , is the freezer thermistor , which tells the control board , the freezer temp , when to cycle off , associated with the fan speed also