So i entered the menu for t3sting the climate control yesterday and went through the calibration. I got a ff01 fault which is for the solar sensor. After that code came up, it will not let me exit the mmdiag menu. Ive tried disconnecting thr batt and touching the terminals for 4 hours, still thr same issue.

anyonr have an idea on how to exit this menu as now i cannot run AC or heat.

Thanks in advance

 

There is button sequence that will exit. I have a thread on this let me know if you can’t find it I can dig it up

 

I know this is an old thread, but I have been looking for the code sequence to exit this. My AC has been stuck in diagnostics mode reading FF01, even tho I just swapped the Solar Sensor