[Elecraft] PA Temperature Sensor problem

[MARK HAMPTON]

Hi all, 
          #579 went together smoothly but I have a little problem with setting the PA sensor temperature.     I had no problem with setting the front panel temperature.  However, I moved on to do the PA one and moving the VFO dial does absolutely nothing - its 2 'dashes' where the temperature should be.    I haven't updated the firmware yet so that could possibly be the problem though is there any other possible problem?

Thanks, Mark M5MDH