Sterlco M2B+ Controller - Manual (Page 47)

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5-17 Reloading Factory Defaults
When factory default settings are reloaded, all special configurations (i.e., 4-20 ma scaling)
will be lost. Please record menu variables before restoring the factory defaults.
Restoring factory defaults for low-heat water TCUs can be accomplished by entering
“Factory mode.” Use the following procedure to restore factory defaults:
TCUs will default to a 250ºF (121.1ºC) set-stop limit. For 550ºF (287.7ºC)
applications, the controller must be reset for a high-heat configuration
(see below).
1. Cycle control power to system Off and On.
2. While the controller is performing the self test, simultaneously press the Index and
Enter button together to enter Factory mode.
3. Press the Index button until the display reads “Default<ENT=YES>.”
4. Press the Enter button to accept the factory defaults. Both displays will flash the
words “OFF” and “ON” indicating reboot is complete.
5. Restart the controller to automatically return to Running mode.
TCUs will default to a 250ºF (121.1ºC) set-stop limit.
For 550ºF (287.7ºC) applications, the controller must be reset for a high-heat configuration.
Use the following procedure to configure the TCU for high-heat applications:
1. Press the Index button until the “Secure Menu” prompt is in the display.
2. Press the Enter button.
3. Security level “SEC = 4” should be displayed. If not, use the Up arrow to scroll to
“111.” Press the Enter button.
4. Press the Index button to display “Unit Function = HEATLO.”
5. Use the Up/Down arrows to change the display to “Unit Function = HEATHI.”
6. Press the Enter button and the Down button simultaneously to accept the factory
default settings. The LCD will flash off and then on to indicate that the default
settings have been restored. The controller will automatically reboot and turn off the
controller.
7. Press the Start button to enable the TCU.