ITC-308 Not Recognizing Temp Differential

For some reason I can no longer get the controller to work with the temp differential. It was working fine and not. I have tried changing the differential from 1 to 5 degrees for both heat and cool. Now the unit is in either heat or cooling mood when the PB temp is not the same as the SV. I have tried resetting and have no luck.

Hello,
Please note that the ITC-308-WIFI has a special mode, and the phenomenon described is highly likely to have triggered this mode.

Please refer to this post: