Nest thermostat incompatible

[HzrInAz]

I have a nest model G4CVZ and according to the compatibility check my current wiring won’t work. I re moved the jumper as it said, and put the red wire to red on the nest. I put the blue to common. The ac blows hot when I did this. I read that putting the white to o/b would solve that, but it just turns on the fan. No heat or ac. Any suggestions? Thank you 

[Jenelyn_O]

Hi HzrInAz,

Thanks for posting in the Google Nest Community forum. I'd like to take a closer look at it. A few questions: what is the make and model of your system? It will help us to identify if you have a heat pump or conventional system. In what country are you located? Could you please take a photo of the wires connected to your system's control board? Ensure that the labels of the wires are visible. 

Best,

Jenelyn