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Thermistor Not Working? Answered

I completed the solar charger build but I find that the thermistor is not working properly. After soldering to the therm points on the solar charger board, I placed the thermistor is a tea kettle with 82.22 degree Celsius water. After 5 minutes, the red and green LED on the power boost are still illuminated. What should I do? All connections have been checked and my soldering job seems to be well done.