HUM No Sensor Message in display

HUM details:
Firmware Version: 10.2
Humidity Version: 30
Hardware Version: 31

After some indeterminate time of use (at least several days), the HUM Sensor is showing No Sensor in the display where the Temperature and Humidiy values would normally be displayed. If I cycle power to the unit the Temperature and Humidity values re-appear after boot. Any idea why I get this message?

Thanks in Advance!

Sounds like a flakey connection in one of the connectors. I assume its one of these style devices, you can unseat and reset all the connectors to see if that helps. And as usual it doesn’t hurt to update the firmware.