This is the probably the part # that you should have if you have that board part #WR55x10942 in there.It has a high rating of 140 degree F.If you have a lower one you have the wrong defrost thermostat in there.
That type of defrost thermostat rated like your taking about is used in older refrigerators with no boards.
I noticed on the sticky thread about GE board driven SxS that folks were talking about a 140 high limit. I assume that the bimetal is now really just a hilimit safety not normal operating control and the evap thermister is the control? and regardless of the high side I would think the 30 is a surer reset.
This 45-15 was put in last year. Probably was what the guy had in the truck. It may be a total coincidence but the fridge functioned fine through the winter months. Perhaps the combination of high humidity, high temps and more access during summer means longer cycles that worked this thermostat more tripped it off and I don't know if the low limit can move on these very easily or if they are just accurate until they dont work. not a metalurgist - that's next month's specialty to learn.
and speaking of specialties, from the sticky on GE SxS evap fan and board issues,http://appliancejunk.com/forums/index.php?topic=9940.0
I derive that the evap thermister is supposed to be connected across J1 pins 4 to 5. So I unplugged the J1 connector and check ohms and get infinite. there are wires connected to those pins but they don't seem to correpsond to the wire colors at the thermistor in the box and I don't know where to look for an onboard wiring diagram although I can check the manual listed in the previous post or any suggestions? thanks,
for any help identifying the model /setup I've attached picture of interior. sorry it ain't the best but you can see both the evap in the freezer and the controls at the top of the fridge box.
the controls seem to be typical analogy temp settings.
I also get infinite ohms across the pins on J1 that are supposed to be the thermisters for the fridge and freezer boxes, so I'm suspecting that the wiring is maybe not as specified in the diagram. can't imagine all those thermisters would be bad when the fridge has been running fine until we hit this defrost issue. But I'm perplexed as to why I can't seem to access anticpated ohm readings as the board seems to anticpate thermisters on those pins and those are the pins that wires are connected to. maybe I should be measuring to the 5V common which is on another connector but to say I'm confused would be putting it mildly. A diagram of the wiring and possible wire colors would be a help.
So thanks for the part number and temp range. I anticpate just getting one of these and seeing if the fridge works in which case I'm not going to beat myself up over not being able to properly ohm the thermisters but I remain your perplexed correspondant.