I have some experience with measuring values precisely and inputting the values to a subsequent yes/no, go/no-go, on/off section of the control. When the difference between the measured value and the limit is high there is often no issue. As the measured value approaches the limits - in your case 10 or 14 volts - there may be a period of time where the inputs are close enough that the output of the comparison toggles back and forth - due to noise or other subtle variations. I have no practical experience with a circuit like this but could see a need for a timer - so that if the comparision/comparator toggles it has to sit there at that state for a time. A comparator with hysteresis might accompish the same thing differently - hysterisis spreads out the point at which things will toggle, in a manner of speaking.