Is it thermistor related?

The pic was taken at 11am yesterday after 17 hrs of 100% chlorination , and the pump stopped at noon. The pump was back on at 10pm at 75% and when I checked at 11:30pm it was generating normally but with flashing low salt and check cell lights (just cleaned the cell a few weeks ago). This morning, while the pump was still running from last night, it was generating as normal and salt was showing at 3100.

I think the combination of low salt and generating 100% for 17 hrs in near 100 degree heat making the pc board too hot. Must say this board (original) is so robust after so many years and multiple repairs it’s still running.
 
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