Hi, this happened to me twice and I want to know if anyone had a similar issue.
I have 4 analog thermistor inputs (ITR-12), inputs signal had good quality, no issues, then I created PID loops related to this inputs and one of the inputs went into NAN, in the module it said bad quality. Thinking of a wiring issue all was tested an no reason for the bad signal was found, I deleted the PID loop and magically the signal came back! Then I re created the PID loop, no issues whatsoever, worked perfect.
Days later I created another PID loop in order to control a pump speed (BTW all PID outputs are OVMALC8 config as 0-10 vdc out) and the same issue happened with another thermistor input, again, I killed the PID loop and created it again, input have no issues after… Any ideas? running 3.2.0-b.44 not possible yet to update until planned stop.