I have a Loup Drill Monitor that I got for the Great Plains Drill for no-tilling soybeans. I really like the thing and have had it for four years now. Today for the first time ever the Monitor flashes "Clean Row 3" when you turn it on. It usually says "Waiting for Calibration" for a minute and then goes to the Speed display. I can not for the life of me get the Clean Row 3 off the the display. The monitor works OK but you cannot see the population readout. I have cleaned the eyes on the sensor and restarted the monitor with no luck. I even tried disconnection the sensor from the system and relearned it to the monitor. No luck. Does someone know the button combination I need to hit to get the thing back to normal fuctioning. Book is no help for this simple mind.