I recently had my Chassis and House batteries replaced at Prevost Car in Jacksonville.

Great result other than the affect on my wallet.

But I have now noticed that I am getting a "Lo Ac" reading on my SMX screen on my galley SMX board for Heat and cooling.

Leon at Marathon said to: 1. press the off button 2. Press the off button a second time while holding both the up and down button at the same time. 3. This will show a reading on the screen. If the reading is at 100V or less press the up button on the SMX pad until the value is between 23 and 25.

I am unable to get my screen to show any values other than the temp and the desired temp setting when I follow this procedure

Has anyone had experience with this issue.