Slant/Fin SC-3 - Manual (Page 23)

SC-3 Controller 24
TESTING THE CONTROL
The control has a built-in test routine that is used to test the main
control functions. The control continually monitors the sensors and
displays an error message whenever a fault is found. See the following
pages for a list of the control’s error messages and possible causes.
When the Test button is pressed, the test light is turned on. The
individual outputs and relays are tested in the following test sequence.
Test Sequence
Each step in the test sequence lasts 10 seconds.
During the test routine, if a demand from the system is present, the test sequence may be paused by pressing the Test button. If the Test
button is not pressed again for 5 minutes while the test sequence is paused, the control exits the entire test routine. If the test sequence is
paused, the Test button can be pressed again to advance to the next step. This can also be used to rapidly advance through the test
sequence. To reach the desired step, repeatedly press and release the Test button until the appropriate device and segment in the display
turn on.
STEP 1: The primary pump is turned on and remains on for the entire test routine.
STEP 2: If Boiler 1 is set to Auto, the Boiler 1 contact is closed and waits for the FIRE DELAY
setting for 10 seconds.
STEP 3: If Boiler 2 is set to Auto, the Boiler 2 contact is closed and waits for the FIRE DELAY
setting or 10 seconds.
STEP 4: If Boiler 3 is set to Auto, the Boiler 3 / DHW contact is closed and waits for the
FIRE DELAY setting or 10 seconds.
STEP 5: All boiler contacts are opened.
STEP 6: If DHW MODE is set to 1 or 2, the primary pump shuts off and the Boiler 3 / DHW
contact is closed.
If DHW MODE is set to 3 or 4, the primary pump remains on and the Boiler 3 / DHW
contact is closed.
STEP 7: All contacts are opened and the control exits the test sequence.