When I had a problem with the temps being wrong it was only one zone and was a loose wire on the sensor. When I removed the sensor from the wall it was spliced to the wire that carries the signal to the RTU (which is where the InCommand reads it). The splice was 2 tiny crimp wire nuts, I remade the connection with new tiny crimp wire nuts and all was good. I now carry spare sensors too.
Also, the wire from the sensor may or may not be spliced inside the roof top unit where the control board is - a bad connection will produce temp errors. Perhaps the winds shook something around up there and it "cured" itself as the wind died down.
Rip & Beth
2021 3121RL Legacy Cobalt FBP, MORryde IS & pin box
2020 F350 PSD CCLB SRW