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The 1200A-2540 controller boards are basically the same, except for jumpers that are installed on each
board to determine whether the board is for an inlet or an outlet valve. If you receive a replacement board
from SuperFlow, you must insure the jumpers are installed correctly for the location where you plan to use
the board (inlet or outlet valve). You must also check you valve’s fully open and fully closed indexing and
adjust as necessary. There is a separate procedure documenting how to perform those adjustments.
Figure 7.4 Check Jumpers
Outlet control
uses shunts in
A2 and the DAC1
positions.
Inlet control
uses shunts in
A1 and the DAC3
positions.
Another important checkpoint on the 1200A-2540 controller boards is to observe the two LEDs on those
boards, VSTEP and VSTEP2. They both must be lit for the board to work properly. If one or both of the
LEDs is not lit, the control circuitry will not function properly. If you do nd the LEDs not lit, the board will
have to be sent to SuperFlow for repair. See photo below for the location of the LEDs on the boards.
Figure 7.5 Check LEDs
7.0 Troubleshooting
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