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Oven probe thermistor inoperative

Home Improvement Asked by nibot on March 17, 2021

The "meat thermometer" oven probe in our GE JB970SB1SS home range doesn’t seem to be working. Ohming out the probe, it appears to be a thermistor with a resistance of around 57 kOhms at room temperature. Is there any way to find specs for this probe to determine whether it is the defective component? I think the probe is part number WB20T10024 but I’m not sure.

One Answer

It turns out that the probe works after all; I'm not sure what was wrong. I did have to twist the connector back and forth a few times to get a good connection and reading. Anyway, in the meantime I did the science experiment of measuring the resistance vs temperature for this probe.

Characterizing the thermister

Here's the data:

T:  41.4, 80.9,  108.5, 118.0, 135.0, 142.4, 148.7, 156.7, 166.0, 176.0    °F
R: 158.9, 44.64, 22.78, 16.31, 13.20, 10.07,  8.37,  7.00, 5.673, 4.827  kOhm

Answered by nibot on March 17, 2021

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