I have an Excel 10 where the setpoint is 72, the room temp is 76, and the unit is stuck in heat mode and throwing the heating valve to 100% open. I cannot think of anything that would cause this unless it is some sort of a communications issue or some sort of wire possibly shorting out.
It was doing this in the Occupied mode at the end of the day yesterday, and noticed that while it's in the Unoccupied mode right now, it's running and in full heating.
This seems like some sort of safety override mechanism (ie: if sensor failure then go to full heat). All readings appear normal. Any thoughts?