The factory default setting for the controller's unlock code is 10 on the N Series Controls. This number is entered at the ULOC screen, enabling access to the setup mode parameters. This number can be changed by the user to any value between 0 and 9999.
If you cannot remember your unlock code, try the default value of 10. If this does not work, enter *configuration mode and scroll through to the LOC parameter. This is a read only display of the lock code that you need for setup mode.
(* While in configuration mode, be sure not to change any of the parameters.)
1. Turn the controller off.
2. Re-apply power while holding down the SCROLL and UP ARROW keys. Do not release these keys until the lower display says INPT.
3. Press the SCROLL key repeatedly until the lower display says LOC. The upper display will show the current unlock code. This screen is "read only". The code can be changed later from setup mode if required.
4. Exit from configuration mode by press in the SCROLL and UP ARROW keys together. The unit will run through its self-test routine and then return to normal operation.
5. Press the SCROLL and UP ARROW keys together, at which point the lower display will say ULOC.
6. Press the UP ARROW key until the correct code is shown in the top display.
7. Press the SCROLL key. The controller is now in setup mode. The lower display will now show FILT, this is the first setup mode parameter.