Hi h2oskr2001
This module definitely handles the MVMAX command (Although there's no indication of it in the '21 protocol). Clearly it is causing issues, perhaps that the MV processing is getting confused. But I even tried eliminating the variable and it still seems that things aren't working correctly.? I just seems that there's something different about the AVR or CP4 FW that's causing this as I've used this module in the same way for years without issue...
