Ran into a problem with the temperatures not working correctly on the hot stamp (HS3). Heater circuit was good so I looked at the temp settings on the controller.
I am not sure how the PID values were changed but apparently they had all been set to the maximum allowable value for each parameter (62578)?
To fix the problem we looked at one of the other hot stamps to find a reasonable value to input and changed them to match the other properly functioning hot stamp.
We also removed the offset from 90 to 0 so the controller would bring the heat temperature back to set point.
The upper limit is now set at 420, lower limit at 390, and set the temperature for 400. It is now functioning correctly and staying on set point.
It may be possible that the PID values were lost during a past battery change or similar resetting circumstance. This should be something to examine at future battery changes or when similar heat problems occur.
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