The user manual says that this setting is setup "by your Rainsoft dealer" when the softener is installed. Well, I bought mine off of Craigslist and I don't know how to verify if the settings are correct. Does anybody know how to access the hidden settings, such as harness?
press and hold both at the same time: Info Center (left) & Customer Settings (up) service settings will display. It will then ask you for an authorization code. Since there is no numeric keypad, I knew that it had to be some (simple) combination of the keys available. It happens that mine was to press the Customer Settings (up arrow) button twice. From there, you are asked whether you want to select "Service Mode" or "Installer Setup". to select the modes, press the Info Centre (right arrow), then depress the Enter/Regen button once to select the mode you want to enter ("Installer" mode is where you can to adjust the settings for time, date, hardness, iron, controller head model, softener capacity, type of media, type of salt, alarm modes, etc. Once in the "Installer" mode, you can use the Info Center arrows (right or left) to move between the settings and the Customer Settings arrows (up or down) to change the values of each setting. There are quite a few settings to go through, including some that I elected not to change (for fear of inadvertently screwing up my system). When you get through all the Service phone number digits (the final setting), you will be asked whether you want to save your changes or not. The default is "No", so you will need to change it to "Yes" before pressing "Enter". You are on your own from here on, so good luck.