I have a F2008h machine that has me stumped. It is constantly reading low conductivity at 13.3.
I have rebuild acid and bicarb pumps as well as calibrated them. I have change conductivity sensor. My bicarb and acid are fresh. I have also change out spikes. Whatever I do can not make my conductivity raise any higher. I do not have flow problems or failed PHT. Thank you for all your help.

We have seen this MANY times before and it has almost always been the battery RAM.

Where is the battery RAM located in an "h". Sorry for the stupid question.

On the Functional Board. You will most likely need to change the software on the Actuator also. Before doing this, try swapping the board from another machine and see if the problem resolves. You will need to re-calibrate conductivity and blood leak when you switch the board from one machine to another though.

Remember, there are two different functional boards for the "h" machine and separate RAM for each boards. Each board has its own RAM.